/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.server.wm;

import static android.app.ActivityManager.LOCK_TASK_MODE_NONE;
import static android.app.ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND;
import static android.app.ActivityOptions.ANIM_CLIP_REVEAL;
import static android.app.ActivityOptions.ANIM_CUSTOM;
import static android.app.ActivityOptions.ANIM_NONE;
import static android.app.ActivityOptions.ANIM_OPEN_CROSS_PROFILE_APPS;
import static android.app.ActivityOptions.ANIM_REMOTE_ANIMATION;
import static android.app.ActivityOptions.ANIM_SCALE_UP;
import static android.app.ActivityOptions.ANIM_SCENE_TRANSITION;
import static android.app.ActivityOptions.ANIM_THUMBNAIL_ASPECT_SCALE_DOWN;
import static android.app.ActivityOptions.ANIM_THUMBNAIL_ASPECT_SCALE_UP;
import static android.app.ActivityOptions.ANIM_THUMBNAIL_SCALE_DOWN;
import static android.app.ActivityOptions.ANIM_THUMBNAIL_SCALE_UP;
import static android.app.ActivityOptions.ANIM_UNDEFINED;
import static android.app.ActivityTaskManager.INVALID_TASK_ID;
import static android.app.AppOpsManager.MODE_ALLOWED;
import static android.app.AppOpsManager.OP_PICTURE_IN_PICTURE;
import static android.app.WaitResult.INVALID_DELAY;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_ASSISTANT;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_DREAM;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED;
import static android.app.WindowConfiguration.ROTATION_UNDEFINED;
import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
import static android.app.WindowConfiguration.WINDOWING_MODE_MULTI_WINDOW;
import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED;
import static android.app.WindowConfiguration.activityTypeToString;
import static android.app.WindowConfiguration.isSplitScreenWindowingMode;
import static android.app.servertransaction.TransferSplashScreenViewStateItem.ATTACH_TO;
import static android.app.servertransaction.TransferSplashScreenViewStateItem.HANDOVER_TO;
import static android.content.Intent.ACTION_MAIN;
import static android.content.Intent.CATEGORY_HOME;
import static android.content.Intent.CATEGORY_LAUNCHER;
import static android.content.Intent.CATEGORY_SECONDARY_HOME;
import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;
import static android.content.Intent.FLAG_ACTIVITY_NO_HISTORY;
import static android.content.pm.ActivityInfo.CONFIG_ORIENTATION;
import static android.content.pm.ActivityInfo.CONFIG_SCREEN_LAYOUT;
import static android.content.pm.ActivityInfo.CONFIG_SCREEN_SIZE;
import static android.content.pm.ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE;
import static android.content.pm.ActivityInfo.CONFIG_UI_MODE;
import static android.content.pm.ActivityInfo.CONFIG_WINDOW_CONFIGURATION;
import static android.content.pm.ActivityInfo.FLAG_ALWAYS_FOCUSABLE;
import static android.content.pm.ActivityInfo.FLAG_EXCLUDE_FROM_RECENTS;
import static android.content.pm.ActivityInfo.FLAG_IMMERSIVE;
import static android.content.pm.ActivityInfo.FLAG_INHERIT_SHOW_WHEN_LOCKED;
import static android.content.pm.ActivityInfo.FLAG_MULTIPROCESS;
import static android.content.pm.ActivityInfo.FLAG_NO_HISTORY;
import static android.content.pm.ActivityInfo.FLAG_SHOW_FOR_ALL_USERS;
import static android.content.pm.ActivityInfo.FLAG_STATE_NOT_NEEDED;
import static android.content.pm.ActivityInfo.FLAG_TURN_SCREEN_ON;
import static android.content.pm.ActivityInfo.LAUNCH_MULTIPLE;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_INSTANCE;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_TASK;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_TOP;
import static android.content.pm.ActivityInfo.LOCK_TASK_LAUNCH_MODE_ALWAYS;
import static android.content.pm.ActivityInfo.LOCK_TASK_LAUNCH_MODE_DEFAULT;
import static android.content.pm.ActivityInfo.LOCK_TASK_LAUNCH_MODE_IF_ALLOWLISTED;
import static android.content.pm.ActivityInfo.LOCK_TASK_LAUNCH_MODE_NEVER;
import static android.content.pm.ActivityInfo.PERSIST_ACROSS_REBOOTS;
import static android.content.pm.ActivityInfo.PERSIST_ROOT_ONLY;
import static android.content.pm.ActivityInfo.RESIZE_MODE_FORCE_RESIZEABLE;
import static android.content.pm.ActivityInfo.RESIZE_MODE_RESIZEABLE;
import static android.content.pm.ActivityInfo.RESIZE_MODE_RESIZEABLE_VIA_SDK_VERSION;
import static android.content.pm.ActivityInfo.RESIZE_MODE_UNRESIZEABLE;
import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_BEHIND;
import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSET;
import static android.content.pm.ActivityInfo.SIZE_CHANGES_SUPPORTED_METADATA;
import static android.content.pm.ActivityInfo.SIZE_CHANGES_SUPPORTED_OVERRIDE;
import static android.content.pm.ActivityInfo.SIZE_CHANGES_UNSUPPORTED_OVERRIDE;
import static android.content.pm.ActivityInfo.isFixedOrientationLandscape;
import static android.content.pm.ActivityInfo.isFixedOrientationPortrait;
import static android.content.res.Configuration.ASSETS_SEQ_UNDEFINED;
import static android.content.res.Configuration.EMPTY;
import static android.content.res.Configuration.ORIENTATION_LANDSCAPE;
import static android.content.res.Configuration.ORIENTATION_PORTRAIT;
import static android.content.res.Configuration.ORIENTATION_UNDEFINED;
import static android.content.res.Configuration.UI_MODE_TYPE_MASK;
import static android.content.res.Configuration.UI_MODE_TYPE_VR_HEADSET;
import static android.os.Build.VERSION_CODES.HONEYCOMB;
import static android.os.Build.VERSION_CODES.O;
import static android.os.Process.SYSTEM_UID;
import static android.os.Trace.TRACE_TAG_WINDOW_MANAGER;
import static android.view.Display.COLOR_MODE_DEFAULT;
import static android.view.Display.INVALID_DISPLAY;
import static android.view.Surface.ROTATION_270;
import static android.view.Surface.ROTATION_90;
import static android.view.SurfaceControl.getGlobalTransaction;
import static android.view.WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD;
import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION;
import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_STARTING;
import static android.view.WindowManager.LayoutParams.TYPE_BASE_APPLICATION;
import static android.view.WindowManager.TRANSIT_CLOSE;
import static android.view.WindowManager.TRANSIT_FLAG_OPEN_BEHIND;
import static android.view.WindowManager.TRANSIT_OLD_UNSET;

import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_ADD_REMOVE;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_APP_TRANSITIONS;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_APP_TRANSITIONS_ANIM;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_CONFIGURATION;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_CONTAINERS;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_FOCUS;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_FOCUS_LIGHT;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_ORIENTATION;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_STARTING_WINDOW;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_STATES;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_SWITCH;
import static com.android.server.policy.WindowManagerPolicy.FINISH_LAYOUT_REDO_ANIM;
import static com.android.server.policy.WindowManagerPolicy.FINISH_LAYOUT_REDO_WALLPAPER;
import static com.android.server.wm.ActivityRecordProto.ALL_DRAWN;
import static com.android.server.wm.ActivityRecordProto.APP_STOPPED;
import static com.android.server.wm.ActivityRecordProto.CLIENT_VISIBLE;
import static com.android.server.wm.ActivityRecordProto.DEFER_HIDING_CLIENT;
import static com.android.server.wm.ActivityRecordProto.FILLS_PARENT;
import static com.android.server.wm.ActivityRecordProto.FRONT_OF_TASK;
import static com.android.server.wm.ActivityRecordProto.IN_SIZE_COMPAT_MODE;
import static com.android.server.wm.ActivityRecordProto.IS_ANIMATING;
import static com.android.server.wm.ActivityRecordProto.IS_WAITING_FOR_TRANSITION_START;
import static com.android.server.wm.ActivityRecordProto.LAST_ALL_DRAWN;
import static com.android.server.wm.ActivityRecordProto.LAST_SURFACE_SHOWING;
import static com.android.server.wm.ActivityRecordProto.NAME;
import static com.android.server.wm.ActivityRecordProto.NUM_DRAWN_WINDOWS;
import static com.android.server.wm.ActivityRecordProto.NUM_INTERESTING_WINDOWS;
import static com.android.server.wm.ActivityRecordProto.PIP_AUTO_ENTER_ENABLED;
import static com.android.server.wm.ActivityRecordProto.PROC_ID;
import static com.android.server.wm.ActivityRecordProto.REPORTED_DRAWN;
import static com.android.server.wm.ActivityRecordProto.REPORTED_VISIBLE;
import static com.android.server.wm.ActivityRecordProto.STARTING_DISPLAYED;
import static com.android.server.wm.ActivityRecordProto.STARTING_MOVED;
import static com.android.server.wm.ActivityRecordProto.STARTING_WINDOW;
import static com.android.server.wm.ActivityRecordProto.STATE;
import static com.android.server.wm.ActivityRecordProto.THUMBNAIL;
import static com.android.server.wm.ActivityRecordProto.TRANSLUCENT;
import static com.android.server.wm.ActivityRecordProto.VISIBLE;
import static com.android.server.wm.ActivityRecordProto.VISIBLE_REQUESTED;
import static com.android.server.wm.ActivityRecordProto.VISIBLE_SET_FROM_TRANSFERRED_STARTING_WINDOW;
import static com.android.server.wm.ActivityRecordProto.WINDOW_TOKEN;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_APP;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_CLEANUP;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_RESULTS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_SWITCH;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_TRANSITION;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_USER_LEAVING;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_VISIBILITY;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_ADD_REMOVE;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_APP;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_CONFIGURATION;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_CONTAINERS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_FOCUS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_PAUSE;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_RESULTS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_SAVED_STATE;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_STATES;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_SWITCH;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_TRANSITION;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_USER_LEAVING;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_VISIBILITY;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_ATM;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_WITH_CLASS_NAME;
import static com.android.server.wm.ActivityTaskManagerService.RELAUNCH_REASON_FREE_RESIZE;
import static com.android.server.wm.ActivityTaskManagerService.RELAUNCH_REASON_NONE;
import static com.android.server.wm.ActivityTaskManagerService.RELAUNCH_REASON_WINDOWING_MODE_RESIZE;
import static com.android.server.wm.ActivityTaskManagerService.getInputDispatchingTimeoutMillisLocked;
import static com.android.server.wm.ActivityTaskSupervisor.PRESERVE_WINDOWS;
import static com.android.server.wm.IdentifierProto.HASH_CODE;
import static com.android.server.wm.IdentifierProto.TITLE;
import static com.android.server.wm.IdentifierProto.USER_ID;
import static com.android.server.wm.LetterboxConfiguration.MIN_FIXED_ORIENTATION_LETTERBOX_ASPECT_RATIO;
import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_APP_TRANSITION;
import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_RECENTS;
import static com.android.server.wm.SurfaceAnimator.ANIMATION_TYPE_WINDOW_ANIMATION;
import static com.android.server.wm.Task.ActivityState.DESTROYED;
import static com.android.server.wm.Task.ActivityState.DESTROYING;
import static com.android.server.wm.Task.ActivityState.FINISHING;
import static com.android.server.wm.Task.ActivityState.INITIALIZING;
import static com.android.server.wm.Task.ActivityState.PAUSED;
import static com.android.server.wm.Task.ActivityState.PAUSING;
import static com.android.server.wm.Task.ActivityState.RESTARTING_PROCESS;
import static com.android.server.wm.Task.ActivityState.RESUMED;
import static com.android.server.wm.Task.ActivityState.STARTED;
import static com.android.server.wm.Task.ActivityState.STOPPED;
import static com.android.server.wm.Task.ActivityState.STOPPING;
import static com.android.server.wm.Task.TASK_VISIBILITY_VISIBLE;
import static com.android.server.wm.TaskPersister.DEBUG;
import static com.android.server.wm.TaskPersister.IMAGE_EXTENSION;
import static com.android.server.wm.WindowContainer.AnimationFlags.CHILDREN;
import static com.android.server.wm.WindowContainer.AnimationFlags.PARENTS;
import static com.android.server.wm.WindowContainer.AnimationFlags.TRANSITION;
import static com.android.server.wm.WindowContainerChildProto.ACTIVITY;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_ANIM;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_CONFIGURATION;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_LAYOUT_REPEATS;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_STARTING_WINDOW_VERBOSE;
import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
import static com.android.server.wm.WindowManagerService.UPDATE_FOCUS_NORMAL;
import static com.android.server.wm.WindowManagerService.UPDATE_FOCUS_WILL_PLACE_SURFACES;
import static com.android.server.wm.WindowState.LEGACY_POLICY_VISIBILITY;
import static com.android.server.wm.WindowStateAnimator.HAS_DRAWN;
import static com.android.server.wm.WindowStateAnimator.ROOT_TASK_CLIP_BEFORE_ANIM;

import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT;
import static org.xmlpull.v1.XmlPullParser.END_TAG;
import static org.xmlpull.v1.XmlPullParser.START_TAG;

import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.Size;
import android.app.Activity;
import android.app.ActivityManager.TaskDescription;
import android.app.ActivityOptions;
import android.app.PendingIntent;
import android.app.PictureInPictureParams;
import android.app.ResultInfo;
import android.app.WaitResult;
import android.app.WindowConfiguration;
import android.app.servertransaction.ActivityConfigurationChangeItem;
import android.app.servertransaction.ActivityLifecycleItem;
import android.app.servertransaction.ActivityRelaunchItem;
import android.app.servertransaction.ActivityResultItem;
import android.app.servertransaction.ClientTransaction;
import android.app.servertransaction.ClientTransactionItem;
import android.app.servertransaction.DestroyActivityItem;
import android.app.servertransaction.MoveToDisplayItem;
import android.app.servertransaction.NewIntentItem;
import android.app.servertransaction.PauseActivityItem;
import android.app.servertransaction.ResumeActivityItem;
import android.app.servertransaction.StartActivityItem;
import android.app.servertransaction.StopActivityItem;
import android.app.servertransaction.TopResumedActivityChangeItem;
import android.app.servertransaction.TransferSplashScreenViewStateItem;
import android.app.usage.UsageEvents.Event;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.LocusId;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.CompatibilityInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.graphics.Rect;
import android.hardware.HardwareBuffer;
import android.net.Uri;
import android.os.Binder;
import android.os.Build;
import android.os.Bundle;
import android.os.Debug;
import android.os.IBinder;
import android.os.PersistableBundle;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.Trace;
import android.os.UserHandle;
import android.os.storage.StorageManager;
import android.service.contentcapture.ActivityEvent;
import android.service.dreams.DreamActivity;
import android.service.dreams.DreamManagerInternal;
import android.service.voice.IVoiceInteractionSession;
import android.text.TextUtils;
import android.util.ArraySet;
import android.util.EventLog;
import android.util.Log;
import android.util.MergedConfiguration;
import android.util.Slog;
import android.util.TimeUtils;
import android.util.TypedXmlPullParser;
import android.util.TypedXmlSerializer;
import android.util.proto.ProtoOutputStream;
import android.view.AppTransitionAnimationSpec;
import android.view.DisplayCutout;
import android.view.DisplayInfo;
import android.view.IAppTransitionAnimationSpecsFuture;
import android.view.IApplicationToken;
import android.view.InputApplicationHandle;
import android.view.RemoteAnimationAdapter;
import android.view.RemoteAnimationDefinition;
import android.view.RemoteAnimationTarget;
import android.view.SurfaceControl;
import android.view.SurfaceControl.Transaction;
import android.view.WindowInsets.Type;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.view.WindowManager.TransitionOldType;
import android.view.animation.Animation;
import android.window.IRemoteTransition;
import android.window.SizeConfigurationBuckets;
import android.window.SplashScreen;
import android.window.SplashScreenView;
import android.window.SplashScreenView.SplashScreenViewParcelable;
import android.window.TaskSnapshot;
import android.window.WindowContainerToken;

import com.android.internal.R;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.app.ResolverActivity;
import com.android.internal.content.ReferrerIntent;
import com.android.internal.policy.AttributeCache;
import com.android.internal.protolog.common.ProtoLog;
import com.android.internal.util.ToBooleanFunction;
import com.android.internal.util.XmlUtils;
import com.android.internal.util.function.pooled.PooledFunction;
import com.android.internal.util.function.pooled.PooledLambda;
import com.android.server.LocalServices;
import com.android.server.am.AppTimeTracker;
import com.android.server.am.PendingIntentRecord;
import com.android.server.contentcapture.ContentCaptureManagerInternal;
import com.android.server.display.color.ColorDisplayService;
import com.android.server.policy.WindowManagerPolicy;
import com.android.server.uri.NeededUriGrants;
import com.android.server.uri.UriPermissionOwner;
import com.android.server.wm.ActivityMetricsLogger.TransitionInfoSnapshot;
import com.android.server.wm.SurfaceAnimator.AnimationType;
import com.android.server.wm.Task.ActivityState;
import com.android.server.wm.WindowManagerService.H;
import com.android.server.wm.utils.InsetUtils;

import com.google.android.collect.Sets;

import org.xmlpull.v1.XmlPullParserException;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;

/**
 * An entry in the history task, representing an activity.
 */
final class ActivityRecord extends WindowToken implements WindowManagerService.AppFreezeListener {
    private static final String TAG = TAG_WITH_CLASS_NAME ? "ActivityRecord" : TAG_ATM;
    private static final String TAG_ADD_REMOVE = TAG + POSTFIX_ADD_REMOVE;
    private static final String TAG_APP = TAG + POSTFIX_APP;
    private static final String TAG_CONFIGURATION = TAG + POSTFIX_CONFIGURATION;
    private static final String TAG_CONTAINERS = TAG + POSTFIX_CONTAINERS;
    private static final String TAG_FOCUS = TAG + POSTFIX_FOCUS;
    private static final String TAG_PAUSE = TAG + POSTFIX_PAUSE;
    private static final String TAG_RESULTS = TAG + POSTFIX_RESULTS;
    private static final String TAG_SAVED_STATE = TAG + POSTFIX_SAVED_STATE;
    private static final String TAG_STATES = TAG + POSTFIX_STATES;
    private static final String TAG_SWITCH = TAG + POSTFIX_SWITCH;
    private static final String TAG_TRANSITION = TAG + POSTFIX_TRANSITION;
    private static final String TAG_USER_LEAVING = TAG + POSTFIX_USER_LEAVING;
    private static final String TAG_VISIBILITY = TAG + POSTFIX_VISIBILITY;

    private static final String ATTR_ID = "id";
    private static final String TAG_INTENT = "intent";
    private static final String ATTR_USERID = "user_id";
    private static final String TAG_PERSISTABLEBUNDLE = "persistable_bundle";
    private static final String ATTR_LAUNCHEDFROMUID = "launched_from_uid";
    private static final String ATTR_LAUNCHEDFROMPACKAGE = "launched_from_package";
    private static final String ATTR_LAUNCHEDFROMFEATURE = "launched_from_feature";
    private static final String ATTR_RESOLVEDTYPE = "resolved_type";
    private static final String ATTR_COMPONENTSPECIFIED = "component_specified";
    static final String ACTIVITY_ICON_SUFFIX = "_activity_icon_";

    // How many activities have to be scheduled to stop to force a stop pass.
    private static final int MAX_STOPPING_TO_FORCE = 3;

    private static final int STARTING_WINDOW_TYPE_NONE = 0;
    private static final int STARTING_WINDOW_TYPE_SNAPSHOT = 1;
    private static final int STARTING_WINDOW_TYPE_SPLASH_SCREEN = 2;

    /**
     * Value to increment the z-layer when boosting a layer during animations. BOOST in l33tsp34k.
     */
    @VisibleForTesting static final int Z_BOOST_BASE = 800570000;
    static final int INVALID_PID = -1;

    // How long we wait until giving up on the last activity to pause.  This
    // is short because it directly impacts the responsiveness of starting the
    // next activity.
    private static final int PAUSE_TIMEOUT = 500;

    // Ticks during which we check progress while waiting for an app to launch.
    private static final int LAUNCH_TICK = 500;

    // How long we wait for the activity to tell us it has stopped before
    // giving up.  This is a good amount of time because we really need this
    // from the application in order to get its saved state. Once the stop
    // is complete we may start destroying client resources triggering
    // crashes if the UI thread was hung. We put this timeout one second behind
    // the ANR timeout so these situations will generate ANR instead of
    // Surface lost or other errors.
    private static final int STOP_TIMEOUT = 11 * 1000;

    // How long we wait until giving up on an activity telling us it has
    // finished destroying itself.
    private static final int DESTROY_TIMEOUT = 10 * 1000;

    final ActivityTaskManagerService mAtmService;
    final ActivityInfo info; // activity info provided by developer in AndroidManifest
    // TODO: rename to mActivityToken
    final ActivityRecord.Token appToken;
    // Which user is this running for?
    final int mUserId;
    // The package implementing intent's component
    // TODO: rename to mPackageName
    final String packageName;
    // the intent component, or target of an alias.
    final ComponentName mActivityComponent;
    // Input application handle used by the input dispatcher.
    private InputApplicationHandle mInputApplicationHandle;

    final int launchedFromPid; // always the pid who started the activity.
    final int launchedFromUid; // always the uid who started the activity.
    final String launchedFromPackage; // always the package who started the activity.
    final @Nullable String launchedFromFeatureId; // always the feature in launchedFromPackage
    private final int mLaunchSourceType; // original launch source type
    final Intent intent;    // the original intent that generated us
    final String shortComponentName; // the short component name of the intent
    final String resolvedType; // as per original caller;
    final String processName; // process where this component wants to run
    final String taskAffinity; // as per ActivityInfo.taskAffinity
    final boolean stateNotNeeded; // As per ActivityInfo.flags
    @VisibleForTesting
    int mHandoverLaunchDisplayId = INVALID_DISPLAY; // Handover launch display id to next activity.
    @VisibleForTesting
    TaskDisplayArea mHandoverTaskDisplayArea; // Handover launch task display area.
    private final boolean componentSpecified;  // did caller specify an explicit component?
    final boolean rootVoiceInteraction;  // was this the root activity of a voice interaction?

    private CharSequence nonLocalizedLabel;  // the label information from the package mgr.
    private int labelRes;           // the label information from the package mgr.
    private int icon;               // resource identifier of activity's icon.
    private int logo;               // resource identifier of activity's logo.
    private int theme;              // resource identifier of activity's theme.
    private int windowFlags;        // custom window flags for preview window.
    private Task task;              // the task this is in.
    private long createTime = System.currentTimeMillis();
    long lastVisibleTime;         // last time this activity became visible
    long pauseTime;               // last time we started pausing the activity
    long launchTickTime;          // base time for launch tick messages
    long topResumedStateLossTime; // last time we reported top resumed state loss to an activity
    // Last configuration reported to the activity in the client process.
    private MergedConfiguration mLastReportedConfiguration;
    private int mLastReportedDisplayId;
    boolean mLastReportedMultiWindowMode;
    boolean mLastReportedPictureInPictureMode;
    CompatibilityInfo compat;// last used compatibility mode
    ActivityRecord resultTo; // who started this entry, so will get our reply
    final String resultWho; // additional identifier for use by resultTo.
    final int requestCode;  // code given by requester (resultTo)
    ArrayList<ResultInfo> results; // pending ActivityResult objs we have received
    HashSet<WeakReference<PendingIntentRecord>> pendingResults; // all pending intents for this act
    ArrayList<ReferrerIntent> newIntents; // any pending new intents for single-top mode
    Intent mLastNewIntent;  // the last new intent we delivered to client
    /** The most recently given options. */
    private ActivityOptions mPendingOptions;
    /** Non-null if {@link #mPendingOptions} specifies the remote animation. */
    private RemoteAnimationAdapter mPendingRemoteAnimation;
    private IRemoteTransition mPendingRemoteTransition;
    ActivityOptions returningOptions; // options that are coming back via convertToTranslucent
    AppTimeTracker appTimeTracker; // set if we are tracking the time in this app/task/activity
    ActivityServiceConnectionsHolder mServiceConnectionsHolder; // Service connections.
    UriPermissionOwner uriPermissions; // current special URI access perms.
    WindowProcessController app;      // if non-null, hosting application
    private ActivityState mState;    // current state we are in
    private Bundle mIcicle;         // last saved activity state
    private PersistableBundle mPersistentState; // last persistently saved activity state
    private boolean mHaveState = true; // Indicates whether the last saved state of activity is
                                       // preserved. This starts out 'true', since the initial state
                                       // of an activity is that we have everything, and we should
                                       // never consider it lacking in state to be removed if it
                                       // dies. After an activity is launched it follows the value
                                       // of #mIcicle.
    boolean launchFailed;   // set if a launched failed, to abort on 2nd try
    boolean stopped;        // is activity pause finished?
    boolean delayedResume;  // not yet resumed because of stopped app switches?
    boolean finishing;      // activity in pending finish list?
    boolean deferRelaunchUntilPaused;   // relaunch of activity is being deferred until pause is
                                        // completed
    boolean preserveWindowOnDeferredRelaunch; // activity windows are preserved on deferred relaunch
    int configChangeFlags;  // which config values have changed
    private boolean keysPaused;     // has key dispatching been paused for it?
    int launchMode;         // the launch mode activity attribute.
    int lockTaskLaunchMode; // the lockTaskMode manifest attribute, subject to override
    private boolean mVisible;        // Should this token's windows be visible?
    boolean visibleIgnoringKeyguard; // is this activity visible, ignoring the fact that Keyguard
                                     // might hide this activity?
    // True if the visible state of this token was forced to true due to a transferred starting
    // window.
    private boolean mVisibleSetFromTransferredStartingWindow;
    // TODO: figure out how to consolidate with the same variable in ActivityRecord.
    private boolean mDeferHidingClient; // If true we told WM to defer reporting to the client
                                        // process that it is hidden.
    private boolean mLastDeferHidingClient; // If true we will defer setting mClientVisible to false
                                           // and reporting to the client that it is hidden.
    boolean nowVisible;     // is this activity's window visible?
    boolean mClientVisibilityDeferred;// was the visibility change message to client deferred?
    boolean idle;           // has the activity gone idle?
    boolean hasBeenLaunched;// has this activity ever been launched?
    boolean frozenBeforeDestroy;// has been frozen but not yet destroyed.
    boolean immersive;      // immersive mode (don't interrupt if possible)
    boolean forceNewConfig; // force re-create with new config next time
    boolean supportsEnterPipOnTaskSwitch;  // This flag is set by the system to indicate that the
        // activity can enter picture in picture while pausing (only when switching to another task)
    PictureInPictureParams pictureInPictureArgs = new PictureInPictureParams.Builder().build();
        // The PiP params used when deferring the entering of picture-in-picture.
    int launchCount;        // count of launches since last state
    long lastLaunchTime;    // time of last launch of this activity
    ComponentName requestedVrComponent; // the requested component for handling VR mode.

    boolean inHistory;  // are we in the history task?
    final ActivityTaskSupervisor mTaskSupervisor;
    final RootWindowContainer mRootWindowContainer;

    static final int STARTING_WINDOW_NOT_SHOWN = 0;
    static final int STARTING_WINDOW_SHOWN = 1;
    static final int STARTING_WINDOW_REMOVED = 2;
    int mStartingWindowState = STARTING_WINDOW_NOT_SHOWN;

    // Tracking splash screen status from previous activity
    boolean mSplashScreenStyleEmpty = false;

    static final int LAUNCH_SOURCE_TYPE_SYSTEM = 1;
    static final int LAUNCH_SOURCE_TYPE_HOME = 2;
    static final int LAUNCH_SOURCE_TYPE_SYSTEMUI = 3;
    static final int LAUNCH_SOURCE_TYPE_APPLICATION = 4;
    /**
     * The type of launch source.
     */
    @IntDef(prefix = {"LAUNCH_SOURCE_TYPE_"}, value = {
            LAUNCH_SOURCE_TYPE_SYSTEM,
            LAUNCH_SOURCE_TYPE_HOME,
            LAUNCH_SOURCE_TYPE_SYSTEMUI,
            LAUNCH_SOURCE_TYPE_APPLICATION
    })
    @interface LaunchSourceType {}

    private boolean mTaskOverlay = false; // Task is always on-top of other activities in the task.

    // Marking the reason why this activity is being relaunched. Mainly used to track that this
    // activity is being relaunched to fulfill a resize request due to compatibility issues, e.g. in
    // pre-NYC apps that don't have a sense of being resized.
    int mRelaunchReason = RELAUNCH_REASON_NONE;

    TaskDescription taskDescription; // the recents information for this activity

    // The locusId associated with this activity, if set.
    private LocusId mLocusId;

    // Whether the activity was launched from a bubble.
    private boolean mLaunchedFromBubble;

    private SizeConfigurationBuckets mSizeConfigurations;

    /**
     * The precomputed display insets for resolving configuration. It will be non-null if
     * {@link #shouldCreateCompatDisplayInsets} returns {@code true}.
     */
    private CompatDisplayInsets mCompatDisplayInsets;

    boolean pendingVoiceInteractionStart;   // Waiting for activity-invoked voice session
    IVoiceInteractionSession voiceSession;  // Voice interaction session for this activity

    boolean mVoiceInteraction;

    private int mPendingRelaunchCount;
    long mRelaunchStartTime;

    // True if we are current in the process of removing this app token from the display
    private boolean mRemovingFromDisplay = false;

    private RemoteAnimationDefinition mRemoteAnimationDefinition;

    AnimatingActivityRegistry mAnimatingActivityRegistry;

    // Set to the previous Task parent of the ActivityRecord when it is reparented to a new Task
    // due to picture-in-picture. This gets cleared whenever this activity or the Task
    // it references to gets removed. This should also be cleared when we move out of pip.
    private Task mLastParentBeforePip;

    boolean firstWindowDrawn;
    /** Whether the visible window(s) of this activity is drawn. */
    private boolean mReportedDrawn;
    private final WindowState.UpdateReportedVisibilityResults mReportedVisibilityResults =
            new WindowState.UpdateReportedVisibilityResults();

    boolean mUseTransferredAnimation;

    /**
     * @see #currentLaunchCanTurnScreenOn()
     */
    private boolean mCurrentLaunchCanTurnScreenOn = true;

    /** Whether our surface was set to be showing in the last call to {@link #prepareSurfaces} */
    private boolean mLastSurfaceShowing = true;

    /**
     * The activity is opaque and fills the entire space of this task.
     * @see WindowContainer#fillsParent()
     */
    private boolean mOccludesParent;

    // The input dispatching timeout for this application token in milliseconds.
    long mInputDispatchingTimeoutMillis;

    private boolean mShowWhenLocked;
    private boolean mInheritShownWhenLocked;
    private boolean mTurnScreenOn;

    /** Have we been asked to have this token keep the screen frozen? */
    private boolean mFreezingScreen;

    // These are used for determining when all windows associated with
    // an activity have been drawn, so they can be made visible together
    // at the same time.
    // initialize so that it doesn't match mTransactionSequence which is an int.
    private long mLastTransactionSequence = Long.MIN_VALUE;
    private int mNumInterestingWindows;
    private int mNumDrawnWindows;
    boolean allDrawn;
    private boolean mLastAllDrawn;

    private boolean mLastContainsShowWhenLockedWindow;
    private boolean mLastContainsDismissKeyguardWindow;
    private boolean mLastContainsTurnScreenOnWindow;

    /** Whether the IME is showing when transitioning away from this activity. */
    boolean mLastImeShown;

    /**
     * When set to true, the IME insets will be frozen until the next app becomes IME input target.
     * @see InsetsPolicy#adjustVisibilityForIme
     */
    boolean mImeInsetsFrozenUntilStartInput;

    /**
     * A flag to determine if this AR is in the process of closing or entering PIP. This is needed
     * to help AR know that the app is in the process of closing but hasn't yet started closing on
     * the WM side.
     */
    private boolean mWillCloseOrEnterPip;

    @VisibleForTesting
    final LetterboxUiController mLetterboxUiController;

    /**
     * The scale to fit at least one side of the activity to its parent. If the activity uses
     * 1920x1080, and the actually size on the screen is 960x540, then the scale is 0.5.
     */
    private float mSizeCompatScale = 1f;

    /**
     * The bounds in global coordinates for activity in size compatibility mode.
     * @see ActivityRecord#hasSizeCompatBounds()
     */
    private Rect mSizeCompatBounds;

    // Whether this activity is in size compatibility mode because its bounds don't fit in parent
    // naturally.
    private boolean mInSizeCompatModeForBounds = false;

    // Whether the aspect ratio restrictions applied to the activity bounds in applyAspectRatio().
    private boolean mIsAspectRatioApplied = false;

    // Bounds populated in resolveFixedOrientationConfiguration when this activity is letterboxed
    // for fixed orientation. If not null, they are used as parent container in
    // resolveSizeCompatModeConfiguration and in a constructor of CompatDisplayInsets. If
    // letterboxed due to fixed orientation then aspect ratio restrictions are also respected.
    // This happens when an activity has fixed orientation which doesn't match orientation of the
    // parent because a display is ignoring orientation request or fixed to user rotation.
    // See WindowManagerService#getIgnoreOrientationRequest and
    // WindowManagerService#getFixedToUserRotation for more context.
    @Nullable
    private Rect mLetterboxBoundsForFixedOrientationAndAspectRatio;

    // activity is not displayed?
    // TODO: rename to mNoDisplay
    @VisibleForTesting
    boolean noDisplay;
    boolean mShowForAllUsers;
    // TODO: Make this final
    int mTargetSdk;

    // Is this window's surface needed?  This is almost like visible, except
    // it will sometimes be true a little earlier: when the activity record has
    // been shown, but is still waiting for its app transition to execute
    // before making its windows shown.
    boolean mVisibleRequested;

    // Last visibility state we reported to the app token.
    boolean reportedVisible;

    boolean mDisablePreviewScreenshots;

    // Information about an application starting window if displayed.
    // Note: these are de-referenced before the starting window animates away.
    StartingData mStartingData;
    WindowState mStartingWindow;
    WindowManagerPolicy.StartingSurface mStartingSurface;
    boolean startingDisplayed;
    boolean startingMoved;

    boolean mHandleExitSplashScreen;
    @TransferSplashScreenState
    int mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_IDLE;

    /** Idle, can be triggered to do transfer if needed. */
    static final int TRANSFER_SPLASH_SCREEN_IDLE = 0;

    /** Requesting a copy from shell. */
    static final int TRANSFER_SPLASH_SCREEN_COPYING = 1;

    /** Attach the splash screen view to activity. */
    static final int TRANSFER_SPLASH_SCREEN_ATTACH_TO_CLIENT = 2;

    /** Client has taken over splash screen view. */
    static final int TRANSFER_SPLASH_SCREEN_FINISH = 3;

    @IntDef(prefix = {"TRANSFER_SPLASH_SCREEN_"}, value = {
            TRANSFER_SPLASH_SCREEN_IDLE,
            TRANSFER_SPLASH_SCREEN_COPYING,
            TRANSFER_SPLASH_SCREEN_ATTACH_TO_CLIENT,
            TRANSFER_SPLASH_SCREEN_FINISH,
    })
    @interface TransferSplashScreenState {
    }

    // How long we wait until giving up transfer splash screen.
    private static final int TRANSFER_SPLASH_SCREEN_TIMEOUT = 2000;

    // TODO: Have a WindowContainer state for tracking exiting/deferred removal.
    boolean mIsExiting;
    // Force an app transition to be ran in the case the visibility of the app did not change.
    // We use this for the case of moving a Root Task to the back with multiple activities, and the
    // top activity enters PIP; the bottom activity's visibility stays the same, but we need to
    // run the transition.
    boolean mRequestForceTransition;

    boolean mEnteringAnimation;
    boolean mOverrideTaskTransition;

    boolean mAppStopped;
    // A hint to override the window specified rotation animation, or -1 to use the window specified
    // value. We use this so that we can select the right animation in the cases of starting
    // windows, where the app hasn't had time to set a value on the window.
    int mRotationAnimationHint = -1;

    private AppSaturationInfo mLastAppSaturationInfo;

    private final ColorDisplayService.ColorTransformController mColorTransformController =
            (matrix, translation) -> mWmService.mH.post(() -> {
                synchronized (mWmService.mGlobalLock) {
                    if (mLastAppSaturationInfo == null) {
                        mLastAppSaturationInfo = new AppSaturationInfo();
                    }

                    mLastAppSaturationInfo.setSaturation(matrix, translation);
                    updateColorTransform();
                }
            });

    /**
     * Current sequencing integer of the configuration, for skipping old activity configurations.
     */
    private int mConfigurationSeq;

    /**
     * Temp configs used in {@link #ensureActivityConfiguration(int, boolean)}
     */
    private final Configuration mTmpConfig = new Configuration();
    private final Rect mTmpBounds = new Rect();

    // Token for targeting this activity for assist purposes.
    final Binder assistToken = new Binder();

    // A reusable token for other purposes, e.g. content capture, translation. It shouldn't be used
    // without security checks
    final Binder shareableActivityToken = new Binder();

    // Tracking cookie for the launch of this activity and it's task.
    IBinder mLaunchCookie;

    // Entering PiP is usually done in two phases, we put the task into pinned mode first and
    // SystemUi sets the pinned mode on activity after transition is done.
    boolean mWaitForEnteringPinnedMode;

    private final Runnable mPauseTimeoutRunnable = new Runnable() {
        @Override
        public void run() {
            // We don't at this point know if the activity is fullscreen,
            // so we need to be conservative and assume it isn't.
            Slog.w(TAG, "Activity pause timeout for " + ActivityRecord.this);
            synchronized (mAtmService.mGlobalLock) {
                if (hasProcess()) {
                    mAtmService.logAppTooSlow(app, pauseTime, "pausing " + ActivityRecord.this);
                }
                activityPaused(true);
            }
        }
    };

    private final Runnable mLaunchTickRunnable = new Runnable() {
        @Override
        public void run() {
            synchronized (mAtmService.mGlobalLock) {
                if (continueLaunchTicking()) {
                    mAtmService.logAppTooSlow(
                            app, launchTickTime, "launching " + ActivityRecord.this);
                }
            }
        }
    };

    private final Runnable mDestroyTimeoutRunnable = new Runnable() {
        @Override
        public void run() {
            synchronized (mAtmService.mGlobalLock) {
                Slog.w(TAG, "Activity destroy timeout for " + ActivityRecord.this);
                destroyed("destroyTimeout");
            }
        }
    };

    private final Runnable mStopTimeoutRunnable = new Runnable() {
        @Override
        public void run() {
            synchronized (mAtmService.mGlobalLock) {
                Slog.w(TAG, "Activity stop timeout for " + ActivityRecord.this);
                if (isInHistory()) {
                    activityStopped(
                            null /*icicle*/, null /*persistentState*/, null /*description*/);
                }
            }
        }
    };

    private static String startingWindowStateToString(int state) {
        switch (state) {
            case STARTING_WINDOW_NOT_SHOWN:
                return "STARTING_WINDOW_NOT_SHOWN";
            case STARTING_WINDOW_SHOWN:
                return "STARTING_WINDOW_SHOWN";
            case STARTING_WINDOW_REMOVED:
                return "STARTING_WINDOW_REMOVED";
            default:
                return "unknown state=" + state;
        }
    }

    @Override
    void dump(PrintWriter pw, String prefix, boolean dumpAll) {
        final long now = SystemClock.uptimeMillis();
        pw.print(prefix); pw.print("packageName="); pw.print(packageName);
                pw.print(" processName="); pw.println(processName);
        pw.print(prefix); pw.print("launchedFromUid="); pw.print(launchedFromUid);
                pw.print(" launchedFromPackage="); pw.print(launchedFromPackage);
                pw.print(" launchedFromFeature="); pw.print(launchedFromFeatureId);
                pw.print(" userId="); pw.println(mUserId);
        pw.print(prefix); pw.print("app="); pw.println(app);
        pw.print(prefix); pw.println(intent.toInsecureString());
        pw.print(prefix); pw.print("rootOfTask="); pw.print(isRootOfTask());
                pw.print(" task="); pw.println(task);
        pw.print(prefix); pw.print("taskAffinity="); pw.println(taskAffinity);
        pw.print(prefix); pw.print("mActivityComponent=");
                pw.println(mActivityComponent.flattenToShortString());
        if (info != null && info.applicationInfo != null) {
            final ApplicationInfo appInfo = info.applicationInfo;
            pw.print(prefix); pw.print("baseDir="); pw.println(appInfo.sourceDir);
            if (!Objects.equals(appInfo.sourceDir, appInfo.publicSourceDir)) {
                pw.print(prefix); pw.print("resDir="); pw.println(appInfo.publicSourceDir);
            }
            pw.print(prefix); pw.print("dataDir="); pw.println(appInfo.dataDir);
            if (appInfo.splitSourceDirs != null) {
                pw.print(prefix); pw.print("splitDir=");
                        pw.println(Arrays.toString(appInfo.splitSourceDirs));
            }
        }
        pw.print(prefix); pw.print("stateNotNeeded="); pw.print(stateNotNeeded);
                pw.print(" componentSpecified="); pw.print(componentSpecified);
                pw.print(" mActivityType="); pw.println(
                        activityTypeToString(getActivityType()));
        if (rootVoiceInteraction) {
            pw.print(prefix); pw.print("rootVoiceInteraction="); pw.println(rootVoiceInteraction);
        }
        pw.print(prefix); pw.print("compat="); pw.print(compat);
                pw.print(" labelRes=0x"); pw.print(Integer.toHexString(labelRes));
                pw.print(" icon=0x"); pw.print(Integer.toHexString(icon));
                pw.print(" theme=0x"); pw.println(Integer.toHexString(theme));
        pw.println(prefix + "mLastReportedConfigurations:");
        mLastReportedConfiguration.dump(pw, prefix + "  ");

        pw.print(prefix); pw.print("CurrentConfiguration="); pw.println(getConfiguration());
        if (!getRequestedOverrideConfiguration().equals(EMPTY)) {
            pw.println(prefix + "RequestedOverrideConfiguration="
                    + getRequestedOverrideConfiguration());
        }
        if (!getResolvedOverrideConfiguration().equals(getRequestedOverrideConfiguration())) {
            pw.println(prefix + "ResolvedOverrideConfiguration="
                    + getResolvedOverrideConfiguration());
        }
        if (!matchParentBounds()) {
            pw.println(prefix + "bounds=" + getBounds());
        }
        if (resultTo != null || resultWho != null) {
            pw.print(prefix); pw.print("resultTo="); pw.print(resultTo);
                    pw.print(" resultWho="); pw.print(resultWho);
                    pw.print(" resultCode="); pw.println(requestCode);
        }
        if (taskDescription != null) {
            final String iconFilename = taskDescription.getIconFilename();
            if (iconFilename != null || taskDescription.getLabel() != null ||
                    taskDescription.getPrimaryColor() != 0) {
                pw.print(prefix); pw.print("taskDescription:");
                        pw.print(" label=\""); pw.print(taskDescription.getLabel());
                                pw.print("\"");
                        pw.print(" icon="); pw.print(taskDescription.getInMemoryIcon() != null
                                ? taskDescription.getInMemoryIcon().getByteCount() + " bytes"
                                : "null");
                        pw.print(" iconResource=");
                                pw.print(taskDescription.getIconResourcePackage());
                                pw.print("/");
                                pw.print(taskDescription.getIconResource());
                        pw.print(" iconFilename="); pw.print(taskDescription.getIconFilename());
                        pw.print(" primaryColor=");
                        pw.println(Integer.toHexString(taskDescription.getPrimaryColor()));
                        pw.print(prefix); pw.print("  backgroundColor=");
                        pw.print(Integer.toHexString(taskDescription.getBackgroundColor()));
                        pw.print(" statusBarColor=");
                        pw.print(Integer.toHexString(taskDescription.getStatusBarColor()));
                        pw.print(" navigationBarColor=");
                        pw.println(Integer.toHexString(taskDescription.getNavigationBarColor()));
                        pw.print(prefix); pw.print(" backgroundColorFloating=");
                        pw.println(Integer.toHexString(
                                taskDescription.getBackgroundColorFloating()));
            }
        }
        if (results != null) {
            pw.print(prefix); pw.print("results="); pw.println(results);
        }
        if (pendingResults != null && pendingResults.size() > 0) {
            pw.print(prefix); pw.println("Pending Results:");
            for (WeakReference<PendingIntentRecord> wpir : pendingResults) {
                PendingIntentRecord pir = wpir != null ? wpir.get() : null;
                pw.print(prefix); pw.print("  - ");
                if (pir == null) {
                    pw.println("null");
                } else {
                    pw.println(pir);
                    pir.dump(pw, prefix + "    ");
                }
            }
        }
        if (newIntents != null && newIntents.size() > 0) {
            pw.print(prefix); pw.println("Pending New Intents:");
            for (int i=0; i<newIntents.size(); i++) {
                Intent intent = newIntents.get(i);
                pw.print(prefix); pw.print("  - ");
                if (intent == null) {
                    pw.println("null");
                } else {
                    pw.println(intent.toShortString(false, true, false, false));
                }
            }
        }
        if (mPendingOptions != null) {
            pw.print(prefix); pw.print("pendingOptions="); pw.println(mPendingOptions);
        }
        if (mPendingRemoteAnimation != null) {
            pw.print(prefix);
            pw.print("pendingRemoteAnimationCallingPid=");
            pw.println(mPendingRemoteAnimation.getCallingPid());
        }
        if (mPendingRemoteTransition != null) {
            pw.print(prefix + " pendingRemoteTransition=" + mPendingRemoteTransition);
        }
        if (appTimeTracker != null) {
            appTimeTracker.dumpWithHeader(pw, prefix, false);
        }
        if (uriPermissions != null) {
            uriPermissions.dump(pw, prefix);
        }
        pw.print(prefix); pw.print("launchFailed="); pw.print(launchFailed);
                pw.print(" launchCount="); pw.print(launchCount);
                pw.print(" lastLaunchTime=");
                if (lastLaunchTime == 0) pw.print("0");
                else TimeUtils.formatDuration(lastLaunchTime, now, pw);
                pw.println();
        if (mLaunchCookie != null) {
            pw.print(prefix);
            pw.print("launchCookie=");
            pw.println(mLaunchCookie);
        }
        pw.print(prefix); pw.print("mHaveState="); pw.print(mHaveState);
                pw.print(" mIcicle="); pw.println(mIcicle);
        pw.print(prefix); pw.print("state="); pw.print(mState);
                pw.print(" stopped="); pw.print(stopped);
                pw.print(" delayedResume="); pw.print(delayedResume);
                pw.print(" finishing="); pw.println(finishing);
        pw.print(prefix); pw.print("keysPaused="); pw.print(keysPaused);
                pw.print(" inHistory="); pw.print(inHistory);
                pw.print(" idle="); pw.print(idle);
                pw.print(" mStartingWindowState=");
                pw.println(startingWindowStateToString(mStartingWindowState));
        pw.print(prefix); pw.print("occludesParent="); pw.print(occludesParent());
                pw.print(" noDisplay="); pw.print(noDisplay);
                pw.print(" immersive="); pw.print(immersive);
                pw.print(" launchMode="); pw.println(launchMode);
        pw.print(prefix); pw.print("frozenBeforeDestroy="); pw.print(frozenBeforeDestroy);
                pw.print(" forceNewConfig="); pw.println(forceNewConfig);
        pw.print(prefix); pw.print("mActivityType=");
                pw.println(activityTypeToString(getActivityType()));
        if (requestedVrComponent != null) {
            pw.print(prefix);
            pw.print("requestedVrComponent=");
            pw.println(requestedVrComponent);
        }
        super.dump(pw, prefix, dumpAll);
        if (mVoiceInteraction) {
            pw.println(prefix + "mVoiceInteraction=true");
        }
        pw.print(prefix); pw.print("mOccludesParent="); pw.println(mOccludesParent);
        pw.print(prefix); pw.print("mOrientation=");
        pw.println(ActivityInfo.screenOrientationToString(mOrientation));
        pw.println(prefix + "mVisibleRequested=" + mVisibleRequested
                + " mVisible=" + mVisible + " mClientVisible=" + isClientVisible()
                + ((mDeferHidingClient) ? " mDeferHidingClient=" + mDeferHidingClient : "")
                + " reportedDrawn=" + mReportedDrawn + " reportedVisible=" + reportedVisible);
        if (paused) {
            pw.print(prefix); pw.print("paused="); pw.println(paused);
        }
        if (mAppStopped) {
            pw.print(prefix); pw.print("mAppStopped="); pw.println(mAppStopped);
        }
        if (mNumInterestingWindows != 0 || mNumDrawnWindows != 0
                || allDrawn || mLastAllDrawn) {
            pw.print(prefix); pw.print("mNumInterestingWindows=");
            pw.print(mNumInterestingWindows);
            pw.print(" mNumDrawnWindows="); pw.print(mNumDrawnWindows);
            pw.print(" allDrawn="); pw.print(allDrawn);
            pw.print(" lastAllDrawn="); pw.print(mLastAllDrawn);
            pw.println(")");
        }
        if (mStartingData != null || firstWindowDrawn || mIsExiting) {
            pw.print(prefix); pw.print("startingData="); pw.print(mStartingData);
            pw.print(" firstWindowDrawn="); pw.print(firstWindowDrawn);
            pw.print(" mIsExiting="); pw.println(mIsExiting);
        }
        if (mStartingWindow != null || mStartingSurface != null
                || startingDisplayed || startingMoved || mVisibleSetFromTransferredStartingWindow) {
            pw.print(prefix); pw.print("startingWindow="); pw.print(mStartingWindow);
            pw.print(" startingSurface="); pw.print(mStartingSurface);
            pw.print(" startingDisplayed="); pw.print(startingDisplayed);
            pw.print(" startingMoved="); pw.print(startingMoved);
            pw.println(" mVisibleSetFromTransferredStartingWindow="
                    + mVisibleSetFromTransferredStartingWindow);
        }
        if (mPendingRelaunchCount != 0) {
            pw.print(prefix); pw.print("mPendingRelaunchCount="); pw.println(mPendingRelaunchCount);
        }
        if (mSizeCompatScale != 1f || mSizeCompatBounds != null) {
            pw.println(prefix + "mSizeCompatScale=" + mSizeCompatScale + " mSizeCompatBounds="
                    + mSizeCompatBounds);
        }
        if (mRemovingFromDisplay) {
            pw.println(prefix + "mRemovingFromDisplay=" + mRemovingFromDisplay);
        }
        if (lastVisibleTime != 0 || nowVisible) {
            pw.print(prefix); pw.print("nowVisible="); pw.print(nowVisible);
                    pw.print(" lastVisibleTime=");
                    if (lastVisibleTime == 0) pw.print("0");
                    else TimeUtils.formatDuration(lastVisibleTime, now, pw);
                    pw.println();
        }
        if (mDeferHidingClient) {
            pw.println(prefix + "mDeferHidingClient=" + mDeferHidingClient);
        }
        if (deferRelaunchUntilPaused || configChangeFlags != 0) {
            pw.print(prefix); pw.print("deferRelaunchUntilPaused=");
                    pw.print(deferRelaunchUntilPaused);
                    pw.print(" configChangeFlags=");
                    pw.println(Integer.toHexString(configChangeFlags));
        }
        if (mServiceConnectionsHolder != null) {
            pw.print(prefix); pw.print("connections="); pw.println(mServiceConnectionsHolder);
        }
        if (info != null) {
            pw.println(prefix + "resizeMode=" + ActivityInfo.resizeModeToString(info.resizeMode));
            pw.println(prefix + "mLastReportedMultiWindowMode=" + mLastReportedMultiWindowMode
                    + " mLastReportedPictureInPictureMode=" + mLastReportedPictureInPictureMode);
            if (info.supportsPictureInPicture()) {
                pw.println(prefix + "supportsPictureInPicture=" + info.supportsPictureInPicture());
                pw.println(prefix + "supportsEnterPipOnTaskSwitch: "
                        + supportsEnterPipOnTaskSwitch);
            }
            if (info.getMaxAspectRatio() != 0) {
                pw.println(prefix + "maxAspectRatio=" + info.getMaxAspectRatio());
            }
            if (info.getMinAspectRatio() != 0) {
                pw.println(prefix + "minAspectRatio=" + info.getMinAspectRatio());
            }
            if (info.getMinAspectRatio() != info.getManifestMinAspectRatio()) {
                // Log the fact that we've overridden the min aspect ratio from the manifest
                pw.println(prefix + "manifestMinAspectRatio="
                        + info.getManifestMinAspectRatio());
            }
            pw.println(prefix + "supportsSizeChanges="
                    + ActivityInfo.sizeChangesSupportModeToString(info.supportsSizeChanges()));
            if (info.configChanges != 0) {
                pw.println(prefix + "configChanges=0x" + Integer.toHexString(info.configChanges));
            }
            pw.println(prefix + "neverSandboxDisplayApis=" + info.neverSandboxDisplayApis());
            pw.println(prefix + "alwaysSandboxDisplayApis=" + info.alwaysSandboxDisplayApis());
        }
        if (mLastParentBeforePip != null) {
            pw.println(prefix + "lastParentTaskIdBeforePip=" + mLastParentBeforePip.mTaskId);
        }

        mLetterboxUiController.dump(pw, prefix);
    }

    void setAppTimeTracker(AppTimeTracker att) {
        appTimeTracker = att;
    }

    /** Update the saved state of an activity. */
    void setSavedState(@Nullable Bundle savedState) {
        mIcicle = savedState;
        mHaveState = mIcicle != null;
    }

    /**
     * Get the actual Bundle instance of the saved state.
     * @see #hasSavedState() for checking if the record has saved state.
     */
    @Nullable Bundle getSavedState() {
        return mIcicle;
    }

    /**
     * Check if the activity has saved state.
     * @return {@code true} if the client reported a non-empty saved state from last onStop(), or
     *         if this record was just created and the client is yet to be launched and resumed.
     */
    boolean hasSavedState() {
        return mHaveState;
    }

    /** @return The actual PersistableBundle instance of the saved persistent state. */
    @Nullable PersistableBundle getPersistentSavedState() {
        return mPersistentState;
    }

    void updateApplicationInfo(ApplicationInfo aInfo) {
        info.applicationInfo = aInfo;
    }

    void setSizeConfigurations(SizeConfigurationBuckets sizeConfigurations) {
        mSizeConfigurations = sizeConfigurations;
    }

    private void scheduleActivityMovedToDisplay(int displayId, Configuration config) {
        if (!attachedToProcess()) {
            ProtoLog.w(WM_DEBUG_SWITCH, "Can't report activity moved "
                    + "to display - client not running, activityRecord=%s, displayId=%d",
                    this, displayId);
            return;
        }
        try {
            ProtoLog.v(WM_DEBUG_SWITCH, "Reporting activity moved to "
                    + "display, activityRecord=%s, displayId=%d, config=%s", this, displayId,
                    config);

            mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                    MoveToDisplayItem.obtain(displayId, config));
        } catch (RemoteException e) {
            // If process died, whatever.
        }
    }

    private void scheduleConfigurationChanged(Configuration config) {
        if (!attachedToProcess()) {
            ProtoLog.w(WM_DEBUG_CONFIGURATION, "Can't report activity configuration "
                    + "update - client not running, activityRecord=%s", this);
            return;
        }
        try {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Sending new config to %s, "
                    + "config: %s", this, config);

            mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                    ActivityConfigurationChangeItem.obtain(config));
        } catch (RemoteException e) {
            // If process died, whatever.
        }
    }

    boolean scheduleTopResumedActivityChanged(boolean onTop) {
        if (!attachedToProcess()) {
            ProtoLog.w(WM_DEBUG_STATES,
                    "Can't report activity position update - client not running, "
                            + "activityRecord=%s", this);
            return false;
        }
        try {
            ProtoLog.v(WM_DEBUG_STATES, "Sending position change to %s, onTop: %b",
                    this, onTop);

            mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                    TopResumedActivityChangeItem.obtain(onTop));
        } catch (RemoteException e) {
            // If process died, whatever.
            Slog.w(TAG, "Failed to send top-resumed=" + onTop + " to " + this, e);
            return false;
        }
        return true;
    }

    void updateMultiWindowMode() {
        if (task == null || task.getRootTask() == null || !attachedToProcess()) {
            return;
        }

        // An activity is considered to be in multi-window mode if its task isn't fullscreen.
        final boolean inMultiWindowMode = inMultiWindowMode();
        if (inMultiWindowMode != mLastReportedMultiWindowMode) {
            if (!inMultiWindowMode && mLastReportedPictureInPictureMode) {
                updatePictureInPictureMode(null, false);
            } else {
                mLastReportedMultiWindowMode = inMultiWindowMode;
                computeConfigurationAfterMultiWindowModeChange();
                // If the activity is in stopping or stopped state, for instance, it's in the
                // split screen task and not the top one, the last configuration it should keep
                // is the one before multi-window mode change.
                final ActivityState state = getState();
                if (state != STOPPED && state != STOPPING) {
                    ensureActivityConfiguration(0 /* globalChanges */, PRESERVE_WINDOWS,
                            true /* ignoreVisibility */);
                }
            }
        }
    }

    void updatePictureInPictureMode(Rect targetRootTaskBounds, boolean forceUpdate) {
        if (task == null || task.getRootTask() == null || !attachedToProcess()) {
            return;
        }

        final boolean inPictureInPictureMode =
                inPinnedWindowingMode() && targetRootTaskBounds != null;
        if (inPictureInPictureMode != mLastReportedPictureInPictureMode || forceUpdate) {
            // Picture-in-picture mode changes also trigger a multi-window mode change as well, so
            // update that here in order. Set the last reported MW state to the same as the PiP
            // state since we haven't yet actually resized the task (these callbacks need to
            // precede the configuration change from the resize.
            mLastReportedPictureInPictureMode = inPictureInPictureMode;
            mLastReportedMultiWindowMode = inPictureInPictureMode;
            if (targetRootTaskBounds != null && !targetRootTaskBounds.isEmpty()) {
                computeConfigurationAfterMultiWindowModeChange();
            }
            ensureActivityConfiguration(0 /* globalChanges */, PRESERVE_WINDOWS,
                    true /* ignoreVisibility */);
        }
    }

    private void computeConfigurationAfterMultiWindowModeChange() {
        final Configuration newConfig = new Configuration();
        newConfig.setTo(task.getRequestedOverrideConfiguration());
        Rect outBounds = newConfig.windowConfiguration.getBounds();
        final Configuration parentConfig = task.getParent().getConfiguration();
        task.adjustForMinimalTaskDimensions(outBounds, outBounds, parentConfig);
        task.computeConfigResourceOverrides(newConfig, parentConfig);
    }

    Task getTask() {
        return task;
    }

    @Override
    void onParentChanged(ConfigurationContainer newParent, ConfigurationContainer oldParent) {
        final Task oldTask = oldParent != null ? (Task) oldParent : null;
        final Task newTask = newParent != null ? (Task) newParent : null;
        this.task = newTask;

        super.onParentChanged(newParent, oldParent);

        if (isPersistable()) {
            if (oldTask != null) {
                mAtmService.notifyTaskPersisterLocked(oldTask, false);
            }
            if (newTask != null) {
                mAtmService.notifyTaskPersisterLocked(newTask, false);
            }
        }

        if (oldParent == null && newParent != null) {
            // First time we are adding the activity to the system.
            mVoiceInteraction = newTask.voiceSession != null;
            mInputDispatchingTimeoutMillis = getInputDispatchingTimeoutMillisLocked(this);

            // TODO(b/36505427): Maybe this call should be moved inside
            // updateOverrideConfiguration()
            newTask.updateOverrideConfigurationFromLaunchBounds();
            // When an activity is started directly into a split-screen fullscreen root task, we
            // need to update the initial multi-window modes so that the callbacks are scheduled
            // correctly when the user leaves that mode.
            mLastReportedMultiWindowMode = inMultiWindowMode();
            mLastReportedPictureInPictureMode = inPinnedWindowingMode();
        }

        // When the associated task is {@code null}, the {@link ActivityRecord} can no longer
        // access visual elements like the {@link DisplayContent}. We must remove any associations
        // such as animations.
        if (task == null) {
            // It is possible we have been marked as a closing app earlier. We must remove ourselves
            // from this list so we do not participate in any future animations.
            if (getDisplayContent() != null) {
                getDisplayContent().mClosingApps.remove(this);
            }
        } else if (oldTask != null && oldTask.getRootTask() != null) {
            task.getRootTask().mExitingActivities.remove(this);
        }
        final Task rootTask = getRootTask();

        // If we reparent, make sure to remove ourselves from the old animation registry.
        if (mAnimatingActivityRegistry != null) {
            mAnimatingActivityRegistry.notifyFinished(this);
        }
        mAnimatingActivityRegistry = rootTask != null
                ? rootTask.getAnimatingActivityRegistry()
                : null;

        if (task == mLastParentBeforePip) {
            // Activity's reparented back from pip, clear the links once established
            clearLastParentBeforePip();
        }

        updateColorTransform();

        if (oldTask != null) {
            oldTask.cleanUpActivityReferences(this);
        }
        if (newTask != null && isState(RESUMED)) {
            newTask.setResumedActivity(this, "onParentChanged");
            mImeInsetsFrozenUntilStartInput = false;
        }

        if (rootTask != null && rootTask.topRunningActivity() == this) {
            // make ensure the TaskOrganizer still works after re-parenting
            if (firstWindowDrawn) {
                rootTask.setHasBeenVisible(true);
            }
        }
    }

    /**
     * Sets {@link #mLastParentBeforePip} to the current parent Task, it's caller's job to ensure
     * {@link #getTask()} is set before this is called.
     */
    void setLastParentBeforePip() {
        mLastParentBeforePip = getTask();
        mLastParentBeforePip.mChildPipActivity = this;
    }

    private void clearLastParentBeforePip() {
        if (mLastParentBeforePip != null) {
            mLastParentBeforePip.mChildPipActivity = null;
            mLastParentBeforePip = null;
        }
    }

    @Nullable Task getLastParentBeforePip() {
        return mLastParentBeforePip;
    }

    private void updateColorTransform() {
        if (mSurfaceControl != null && mLastAppSaturationInfo != null) {
            getPendingTransaction().setColorTransform(mSurfaceControl,
                    mLastAppSaturationInfo.mMatrix, mLastAppSaturationInfo.mTranslation);
            mWmService.scheduleAnimationLocked();
        }
    }

    @Override
    void onDisplayChanged(DisplayContent dc) {
        DisplayContent prevDc = mDisplayContent;
        super.onDisplayChanged(dc);
        if (prevDc == null || prevDc == mDisplayContent) {
            return;
        }

        // TODO(b/169035022): move to a more-appropriate place.
        mAtmService.getTransitionController().collect(this);
        if (prevDc.mOpeningApps.remove(this)) {
            // Transfer opening transition to new display.
            mDisplayContent.mOpeningApps.add(this);
            mDisplayContent.transferAppTransitionFrom(prevDc);
            mDisplayContent.executeAppTransition();
        }

        prevDc.mClosingApps.remove(this);

        if (prevDc.mFocusedApp == this) {
            prevDc.setFocusedApp(null);
            if (dc.getTopMostActivity() == this) {
                dc.setFocusedApp(this);
            }
        }

        mLetterboxUiController.onMovedToDisplay(mDisplayContent.getDisplayId());
    }

    void layoutLetterbox(WindowState winHint) {
        mLetterboxUiController.layoutLetterbox(winHint);
    }

    boolean hasWallpaperBackgroudForLetterbox() {
        return mLetterboxUiController.hasWallpaperBackgroudForLetterbox();
    }

    void updateLetterboxSurface(WindowState winHint) {
        mLetterboxUiController.updateLetterboxSurface(winHint);
    }

    /** Gets the letterbox insets. The insets will be empty if there is no letterbox. */
    Rect getLetterboxInsets() {
        return mLetterboxUiController.getLetterboxInsets();
    }

    /** Gets the inner bounds of letterbox. The bounds will be empty if there is no letterbox. */
    void getLetterboxInnerBounds(Rect outBounds) {
        mLetterboxUiController.getLetterboxInnerBounds(outBounds);
    }

    /**
     * @return {@code true} if bar shown within a given rectangle is allowed to be fully transparent
     *     when the current activity is displayed.
     */
    boolean isFullyTransparentBarAllowed(Rect rect) {
        return mLetterboxUiController.isFullyTransparentBarAllowed(rect);
    }

    static class Token extends IApplicationToken.Stub {
        private WeakReference<ActivityRecord> weakActivity;
        private final String name;
        private final String tokenString;

        Token(Intent intent) {
            name = intent.getComponent().flattenToShortString();
            tokenString = "Token{" + Integer.toHexString(System.identityHashCode(this)) + "}";
        }

        private void attach(ActivityRecord activity) {
            if (weakActivity != null) {
                throw new IllegalStateException("Already attached..." + this);
            }
            weakActivity = new WeakReference<>(activity);
        }

        private static @Nullable ActivityRecord tokenToActivityRecordLocked(Token token) {
            if (token == null) {
                return null;
            }
            ActivityRecord r = token.weakActivity.get();
            if (r == null || r.getRootTask() == null) {
                return null;
            }
            return r;
        }

        @Override
        public String toString() {
            StringBuilder sb = new StringBuilder(128);
            sb.append("Token{");
            sb.append(Integer.toHexString(System.identityHashCode(this)));
            sb.append(' ');
            if (weakActivity != null) {
                sb.append(weakActivity.get());
            }
            sb.append('}');
            return sb.toString();
        }

        @Override
        public String getName() {
            return name;
        }
    }

    static @Nullable ActivityRecord forTokenLocked(IBinder token) {
        try {
            return Token.tokenToActivityRecordLocked((Token)token);
        } catch (ClassCastException e) {
            Slog.w(TAG, "Bad activity token: " + token, e);
            return null;
        }
    }

    static boolean isResolverActivity(String className) {
        return ResolverActivity.class.getName().equals(className);
    }

    boolean isResolverOrDelegateActivity() {
        return isResolverActivity(mActivityComponent.getClassName()) || Objects.equals(
                mActivityComponent, mAtmService.mTaskSupervisor.getSystemChooserActivity());
    }

    boolean isResolverOrChildActivity() {
        if (!"android".equals(packageName)) {
            return false;
        }
        try {
            return ResolverActivity.class.isAssignableFrom(
                    Object.class.getClassLoader().loadClass(mActivityComponent.getClassName()));
        } catch (ClassNotFoundException e) {
            return false;
        }
    }

    private ActivityRecord(ActivityTaskManagerService _service, WindowProcessController _caller,
            int _launchedFromPid, int _launchedFromUid, String _launchedFromPackage,
            @Nullable String _launchedFromFeature, Intent _intent, String _resolvedType,
            ActivityInfo aInfo, Configuration _configuration, ActivityRecord _resultTo,
            String _resultWho, int _reqCode, boolean _componentSpecified,
            boolean _rootVoiceInteraction, ActivityTaskSupervisor supervisor,
            ActivityOptions options, ActivityRecord sourceRecord, PersistableBundle persistentState,
            TaskDescription _taskDescription, long _createTime) {
        super(_service.mWindowManager, new Token(_intent).asBinder(), TYPE_APPLICATION, true,
                null /* displayContent */, false /* ownerCanManageAppTokens */);

        mAtmService = _service;
        appToken = (Token) token;
        info = aInfo;
        mUserId = UserHandle.getUserId(info.applicationInfo.uid);
        packageName = info.applicationInfo.packageName;
        intent = _intent;

        // If the class name in the intent doesn't match that of the target, this is probably an
        // alias. We have to create a new ComponentName object to keep track of the real activity
        // name, so that FLAG_ACTIVITY_CLEAR_TOP is handled properly.
        if (info.targetActivity == null
                || (info.targetActivity.equals(intent.getComponent().getClassName())
                && (info.launchMode == LAUNCH_MULTIPLE
                || info.launchMode == LAUNCH_SINGLE_TOP))) {
            mActivityComponent = intent.getComponent();
        } else {
            mActivityComponent =
                    new ComponentName(info.packageName, info.targetActivity);
        }

        mTargetSdk = info.applicationInfo.targetSdkVersion;
        mShowForAllUsers = (info.flags & FLAG_SHOW_FOR_ALL_USERS) != 0;
        setOrientation(info.screenOrientation);
        mRotationAnimationHint = info.rotationAnimation;

        mShowWhenLocked = (aInfo.flags & ActivityInfo.FLAG_SHOW_WHEN_LOCKED) != 0;
        mInheritShownWhenLocked = (aInfo.privateFlags & FLAG_INHERIT_SHOW_WHEN_LOCKED) != 0;
        mTurnScreenOn = (aInfo.flags & FLAG_TURN_SCREEN_ON) != 0;

        int realTheme = info.getThemeResource();
        if (realTheme == Resources.ID_NULL) {
            realTheme = aInfo.applicationInfo.targetSdkVersion < HONEYCOMB
                    ? android.R.style.Theme : android.R.style.Theme_Holo;
        }

        final AttributeCache.Entry ent = AttributeCache.instance().get(packageName,
                realTheme, com.android.internal.R.styleable.Window, mUserId);

        if (ent != null) {
            mOccludesParent = !ActivityInfo.isTranslucentOrFloating(ent.array)
                    // This style is propagated to the main window attributes with
                    // FLAG_SHOW_WALLPAPER from PhoneWindow#generateLayout.
                    || ent.array.getBoolean(R.styleable.Window_windowShowWallpaper, false);
            noDisplay = ent.array.getBoolean(R.styleable.Window_windowNoDisplay, false);
        } else {
            noDisplay = false;
        }

        if (options != null) {
            mLaunchTaskBehind = options.getLaunchTaskBehind();

            final int rotationAnimation = options.getRotationAnimationHint();
            // Only override manifest supplied option if set.
            if (rotationAnimation >= 0) {
                mRotationAnimationHint = rotationAnimation;
            }

            mOverrideTaskTransition = options.getOverrideTaskTransition();
        }

        ColorDisplayService.ColorDisplayServiceInternal cds = LocalServices.getService(
                ColorDisplayService.ColorDisplayServiceInternal.class);
        cds.attachColorTransformController(packageName, mUserId,
                new WeakReference<>(mColorTransformController));

        appToken.attach(this);

        mRootWindowContainer = _service.mRootWindowContainer;
        launchedFromPid = _launchedFromPid;
        launchedFromUid = _launchedFromUid;
        launchedFromPackage = _launchedFromPackage;
        launchedFromFeatureId = _launchedFromFeature;
        mLaunchSourceType = determineLaunchSourceType(_launchedFromUid, _caller);
        shortComponentName = _intent.getComponent().flattenToShortString();
        resolvedType = _resolvedType;
        componentSpecified = _componentSpecified;
        rootVoiceInteraction = _rootVoiceInteraction;
        mLastReportedConfiguration = new MergedConfiguration(_configuration);
        resultTo = _resultTo;
        resultWho = _resultWho;
        requestCode = _reqCode;
        setState(INITIALIZING, "ActivityRecord ctor");
        launchFailed = false;
        stopped = false;
        delayedResume = false;
        finishing = false;
        deferRelaunchUntilPaused = false;
        keysPaused = false;
        inHistory = false;
        nowVisible = false;
        super.setClientVisible(true);
        idle = false;
        hasBeenLaunched = false;
        mTaskSupervisor = supervisor;

        info.taskAffinity = computeTaskAffinity(info.taskAffinity, info.applicationInfo.uid,
                launchMode);
        taskAffinity = info.taskAffinity;
        final String uid = Integer.toString(info.applicationInfo.uid);
        if (info.windowLayout != null && info.windowLayout.windowLayoutAffinity != null
                && !info.windowLayout.windowLayoutAffinity.startsWith(uid)) {
            info.windowLayout.windowLayoutAffinity =
                    uid + ":" + info.windowLayout.windowLayoutAffinity;
        }
        stateNotNeeded = (aInfo.flags & FLAG_STATE_NOT_NEEDED) != 0;
        nonLocalizedLabel = aInfo.nonLocalizedLabel;
        labelRes = aInfo.labelRes;
        if (nonLocalizedLabel == null && labelRes == 0) {
            ApplicationInfo app = aInfo.applicationInfo;
            nonLocalizedLabel = app.nonLocalizedLabel;
            labelRes = app.labelRes;
        }
        icon = aInfo.getIconResource();
        logo = aInfo.getLogoResource();
        theme = aInfo.getThemeResource();
        if ((aInfo.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0) {
            windowFlags |= LayoutParams.FLAG_HARDWARE_ACCELERATED;
        }
        if ((aInfo.flags & FLAG_MULTIPROCESS) != 0 && _caller != null
                && (aInfo.applicationInfo.uid == SYSTEM_UID
                    || aInfo.applicationInfo.uid == _caller.mInfo.uid)) {
            processName = _caller.mName;
        } else {
            processName = aInfo.processName;
        }

        if ((aInfo.flags & FLAG_EXCLUDE_FROM_RECENTS) != 0) {
            intent.addFlags(FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
        }

        launchMode = aInfo.launchMode;

        setActivityType(_componentSpecified, _launchedFromUid, _intent, options, sourceRecord);

        immersive = (aInfo.flags & FLAG_IMMERSIVE) != 0;

        requestedVrComponent = (aInfo.requestedVrComponent == null) ?
                null : ComponentName.unflattenFromString(aInfo.requestedVrComponent);

        lockTaskLaunchMode = getLockTaskLaunchMode(aInfo, options);

        if (options != null) {
            setOptions(options);
            final PendingIntent usageReport = options.getUsageTimeReport();
            if (usageReport != null) {
                appTimeTracker = new AppTimeTracker(usageReport);
            }
            // Gets launch task display area and display id from options. Returns
            // null/INVALID_DISPLAY if not set.
            final WindowContainerToken daToken = options.getLaunchTaskDisplayArea();
            mHandoverTaskDisplayArea = daToken != null
                    ? (TaskDisplayArea) WindowContainer.fromBinder(daToken.asBinder()) : null;
            mHandoverLaunchDisplayId = options.getLaunchDisplayId();
            mLaunchCookie = options.getLaunchCookie();
        }

        mPersistentState = persistentState;
        taskDescription = _taskDescription;

        mLetterboxUiController = new LetterboxUiController(mWmService, this);

        if (_createTime > 0) {
            createTime = _createTime;
        }
        mAtmService.mPackageConfigPersister.updateConfigIfNeeded(this, mUserId, packageName);
    }

    /**
     * Generate the task affinity with uid and activity launch mode. For b/35954083, Limit task
     * affinity to uid to avoid issues associated with sharing affinity across uids.
     *
     * @param affinity The affinity of the activity.
     * @param uid The user-ID that has been assigned to this application.
     * @param launchMode The activity launch mode
     * @return The task affinity
     */
    static String computeTaskAffinity(String affinity, int uid, int launchMode) {
        final String uidStr = Integer.toString(uid);
        if (affinity != null && !affinity.startsWith(uidStr)) {
            affinity = uidStr + (launchMode == LAUNCH_SINGLE_INSTANCE ? "-si:" : ":") + affinity;
        }
        return affinity;
    }

    static int getLockTaskLaunchMode(ActivityInfo aInfo, @Nullable ActivityOptions options) {
        int lockTaskLaunchMode = aInfo.lockTaskLaunchMode;
        // Non-priv apps are not allowed to use always or never, fall back to default
        if (!aInfo.applicationInfo.isPrivilegedApp()
                && (lockTaskLaunchMode == LOCK_TASK_LAUNCH_MODE_ALWAYS
                || lockTaskLaunchMode == LOCK_TASK_LAUNCH_MODE_NEVER)) {
            lockTaskLaunchMode = LOCK_TASK_LAUNCH_MODE_DEFAULT;
        }
        if (options != null) {
            final boolean useLockTask = options.getLockTaskMode();
            if (useLockTask && lockTaskLaunchMode == LOCK_TASK_LAUNCH_MODE_DEFAULT) {
                lockTaskLaunchMode = LOCK_TASK_LAUNCH_MODE_IF_ALLOWLISTED;
            }
        }
        return lockTaskLaunchMode;
    }

    @NonNull InputApplicationHandle getInputApplicationHandle(boolean update) {
        if (mInputApplicationHandle == null) {
            mInputApplicationHandle = new InputApplicationHandle(appToken, toString(),
                    mInputDispatchingTimeoutMillis);
        } else if (update) {
            final String name = toString();
            if (mInputDispatchingTimeoutMillis != mInputApplicationHandle.dispatchingTimeoutMillis
                    || !name.equals(mInputApplicationHandle.name)) {
                mInputApplicationHandle = new InputApplicationHandle(appToken, name,
                        mInputDispatchingTimeoutMillis);
            }
        }
        return mInputApplicationHandle;
    }

    @Override
    ActivityRecord asActivityRecord() {
        // I am an activity record!
        return this;
    }

    @Override
    boolean hasActivity() {
        // I am an activity!
        return true;
    }

    void setProcess(WindowProcessController proc) {
        app = proc;
        final ActivityRecord root = task != null ? task.getRootActivity() : null;
        if (root == this) {
            task.setRootProcess(proc);
        }
        proc.addActivityIfNeeded(this);
    }

    boolean hasProcess() {
        return app != null;
    }

    boolean attachedToProcess() {
        return hasProcess() && app.hasThread();
    }

    /**
     * Evaluate the theme for a starting window.
     * @param prev Previous activity which may have a starting window.
     * @param originalTheme The original theme which read from activity or application.
     * @param replaceTheme The replace theme which requested from starter.
     * @return Resolved theme.
     */
    private int evaluateStartingWindowTheme(ActivityRecord prev, String pkg, int originalTheme,
            int replaceTheme) {
        // Skip if the package doesn't want a starting window.
        if (!validateStartingWindowTheme(prev, pkg, originalTheme)) {
            return 0;
        }
        int selectedTheme = originalTheme;
        if (replaceTheme != 0 && validateStartingWindowTheme(prev, pkg, replaceTheme)) {
            // allow to replace theme
            selectedTheme = replaceTheme;
        }
        return selectedTheme;
    }

    /**
     * @return Whether this {@link ActivityRecord} was launched from a system surface (e.g
     * Launcher, Notification,...)
     */
    private boolean launchedFromSystemSurface() {
        return mLaunchSourceType == LAUNCH_SOURCE_TYPE_SYSTEM
                || mLaunchSourceType == LAUNCH_SOURCE_TYPE_HOME
                || mLaunchSourceType == LAUNCH_SOURCE_TYPE_SYSTEMUI;
    }

    boolean isLaunchSourceType(@LaunchSourceType int type) {
        return mLaunchSourceType == type;
    }

    private int determineLaunchSourceType(int launchFromUid, WindowProcessController caller) {
        if (launchFromUid == Process.SYSTEM_UID || launchFromUid == Process.ROOT_UID) {
            return LAUNCH_SOURCE_TYPE_SYSTEM;
        }
        if (caller != null) {
            if (caller.isHomeProcess()) {
                return LAUNCH_SOURCE_TYPE_HOME;
            }
            if (mAtmService.getSysUiServiceComponentLocked().getPackageName()
                    .equals(caller.mInfo.packageName)) {
                return LAUNCH_SOURCE_TYPE_SYSTEMUI;
            }
        }
        return LAUNCH_SOURCE_TYPE_APPLICATION;
    }

    private boolean validateStartingWindowTheme(ActivityRecord prev, String pkg, int theme) {
        // If this is a translucent window, then don't show a starting window -- the current
        // effect (a full-screen opaque starting window that fades away to the real contents
        // when it is ready) does not work for this.
        ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Checking theme of starting window: 0x%x", theme);
        if (theme == 0) {
            return false;
        }

        final AttributeCache.Entry ent = AttributeCache.instance().get(pkg, theme,
                com.android.internal.R.styleable.Window, mWmService.mCurrentUserId);
        if (ent == null) {
            // Whoops!  App doesn't exist. Um. Okay. We'll just pretend like we didn't
            // see that.
            return false;
        }
        final boolean windowIsTranslucent = ent.array.getBoolean(
                com.android.internal.R.styleable.Window_windowIsTranslucent, false);
        final boolean windowIsFloating = ent.array.getBoolean(
                com.android.internal.R.styleable.Window_windowIsFloating, false);
        final boolean windowShowWallpaper = ent.array.getBoolean(
                com.android.internal.R.styleable.Window_windowShowWallpaper, false);
        final boolean windowDisableStarting = ent.array.getBoolean(
                com.android.internal.R.styleable.Window_windowDisablePreview, false);
        ProtoLog.v(WM_DEBUG_STARTING_WINDOW,
                "Translucent=%s Floating=%s ShowWallpaper=%s Disable=%s",
                windowIsTranslucent, windowIsFloating, windowShowWallpaper,
                windowDisableStarting);
        // If this activity is launched from system surface, ignore windowDisableStarting
        if (windowIsTranslucent || windowIsFloating) {
            return false;
        }
        if (windowShowWallpaper
                && getDisplayContent().mWallpaperController.getWallpaperTarget() != null) {
            return false;
        }
        if (windowDisableStarting && !launchedFromSystemSurface()) {
            // Check if previous activity can transfer the starting window to this activity.
            return prev != null && prev.getActivityType() == ACTIVITY_TYPE_STANDARD
                    && prev.mTransferringSplashScreenState == TRANSFER_SPLASH_SCREEN_IDLE
                    && (prev.mStartingData != null
                    || (prev.mStartingWindow != null && prev.mStartingSurface != null));
        }
        return true;
    }

    private void applyStartingWindowTheme(String pkg, int theme) {
        if (theme != 0) {
            AttributeCache.Entry ent = AttributeCache.instance().get(pkg, theme,
                    com.android.internal.R.styleable.Window,
                    mWmService.mCurrentUserId);
            if (ent == null) {
                return;
            }
            final boolean windowShowWallpaper = ent.array.getBoolean(
                    com.android.internal.R.styleable.Window_windowShowWallpaper, false);
            if (windowShowWallpaper && getDisplayContent().mWallpaperController
                    .getWallpaperTarget() == null) {
                // If this theme is requesting a wallpaper, and the wallpaper
                // is not currently visible, then this effectively serves as
                // an opaque window and our starting window transition animation
                // can still work.  We just need to make sure the starting window
                // is also showing the wallpaper.
                windowFlags |= FLAG_SHOW_WALLPAPER;
            }
        }
    }

    boolean addStartingWindow(String pkg, int resolvedTheme, CompatibilityInfo compatInfo,
            CharSequence nonLocalizedLabel, int labelRes, int icon, int logo, int windowFlags,
            IBinder transferFrom, boolean newTask, boolean taskSwitch, boolean processRunning,
            boolean allowTaskSnapshot, boolean activityCreated, boolean useEmpty) {
        // If the display is frozen, we won't do anything until the actual window is
        // displayed so there is no reason to put in the starting window.
        if (!okToDisplay()) {
            return false;
        }

        if (mStartingData != null) {
            return false;
        }

        final WindowState mainWin = findMainWindow();
        if (mainWin != null && mainWin.mWinAnimator.getShown()) {
            // App already has a visible window...why would you want a starting window?
            return false;
        }

        final TaskSnapshot snapshot =
                mWmService.mTaskSnapshotController.getSnapshot(task.mTaskId, task.mUserId,
                        false /* restoreFromDisk */, false /* isLowResolution */);
        final int type = getStartingWindowType(newTask, taskSwitch, processRunning,
                allowTaskSnapshot, activityCreated, snapshot);

        //TODO(191787740) Remove for T
        final boolean useLegacy = type == STARTING_WINDOW_TYPE_SPLASH_SCREEN
                && mWmService.mStartingSurfaceController.isExceptionApp(packageName, mTargetSdk,
                    () -> {
                        ActivityInfo activityInfo = intent.resolveActivityInfo(
                                mAtmService.mContext.getPackageManager(),
                                PackageManager.GET_META_DATA);
                        return activityInfo != null ? activityInfo.applicationInfo : null;
                    });

        final int typeParameter = mWmService.mStartingSurfaceController
                .makeStartingWindowTypeParameter(newTask, taskSwitch, processRunning,
                        allowTaskSnapshot, activityCreated, useEmpty, useLegacy);

        if (type == STARTING_WINDOW_TYPE_SNAPSHOT) {
            if (isActivityTypeHome()) {
                // The snapshot of home is only used once because it won't be updated while screen
                // is on (see {@link TaskSnapshotController#screenTurningOff}).
                mWmService.mTaskSnapshotController.removeSnapshotCache(task.mTaskId);
                if ((mDisplayContent.mAppTransition.getTransitFlags()
                        & WindowManager.TRANSIT_FLAG_KEYGUARD_GOING_AWAY_NO_ANIMATION) == 0) {
                    // Only use snapshot of home as starting window when unlocking directly.
                    return false;
                }
            }
            return createSnapshot(snapshot, typeParameter);
        }

        // Original theme can be 0 if developer doesn't request any theme. So if resolved theme is 0
        // but original theme is not 0, means this package doesn't want a starting window.
        if (resolvedTheme == 0 && theme != 0) {
            return false;
        }
        applyStartingWindowTheme(pkg, resolvedTheme);

        if (transferStartingWindow(transferFrom)) {
            return true;
        }

        // There is no existing starting window, and we don't want to create a splash screen, so
        // that's it!
        if (type != STARTING_WINDOW_TYPE_SPLASH_SCREEN) {
            return false;
        }

        ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Creating SplashScreenStartingData");
        mStartingData = new SplashScreenStartingData(mWmService, pkg,
                resolvedTheme, compatInfo, nonLocalizedLabel, labelRes, icon, logo, windowFlags,
                getMergedOverrideConfiguration(), typeParameter);
        scheduleAddStartingWindow();
        return true;
    }

    private boolean createSnapshot(TaskSnapshot snapshot, int typeParams) {
        if (snapshot == null) {
            return false;
        }

        ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Creating SnapshotStartingData");
        mStartingData = new SnapshotStartingData(mWmService, snapshot, typeParams);
        scheduleAddStartingWindow();
        return true;
    }

    void scheduleAddStartingWindow() {
        if (StartingSurfaceController.DEBUG_ENABLE_SHELL_DRAWER) {
            mAddStartingWindow.run();
        } else {
            // Note: we really want to do sendMessageAtFrontOfQueue() because we
            // want to process the message ASAP, before any other queued
            // messages.
            if (!mWmService.mAnimationHandler.hasCallbacks(mAddStartingWindow)) {
                ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Enqueueing ADD_STARTING");
                mWmService.mAnimationHandler.postAtFrontOfQueue(mAddStartingWindow);
            }
        }
    }

    private class AddStartingWindow implements Runnable {

        @Override
        public void run() {
            // Can be accessed without holding the global lock
            final StartingData startingData;
            synchronized (mWmService.mGlobalLock) {
                // There can only be one adding request, silly caller!
                if (!StartingSurfaceController.DEBUG_ENABLE_SHELL_DRAWER) {
                    mWmService.mAnimationHandler.removeCallbacks(this);
                }

                if (mStartingData == null) {
                    // Animation has been canceled... do nothing.
                    ProtoLog.v(WM_DEBUG_STARTING_WINDOW,
                            "startingData was nulled out before handling"
                                    + " mAddStartingWindow: %s", ActivityRecord.this);
                    return;
                }
                startingData = mStartingData;
            }

            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Add starting %s: startingData=%s",
                    this, startingData);

            WindowManagerPolicy.StartingSurface surface = null;
            try {
                surface = startingData.createStartingSurface(ActivityRecord.this);
            } catch (Exception e) {
                Slog.w(TAG, "Exception when adding starting window", e);
            }
            if (surface != null) {
                boolean abort = false;
                synchronized (mWmService.mGlobalLock) {
                    // If the window was successfully added, then we need to remove it.
                    if (mStartingData == null) {
                        ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Aborted starting %s: startingData=%s",
                                ActivityRecord.this, mStartingData);

                        mStartingWindow = null;
                        mStartingData = null;
                        abort = true;
                    } else {
                        mStartingSurface = surface;
                    }
                    if (!abort) {
                        ProtoLog.v(WM_DEBUG_STARTING_WINDOW,
                                "Added starting %s: startingWindow=%s startingView=%s",
                                ActivityRecord.this, mStartingWindow, mStartingSurface);
                    }
                }
                if (abort) {
                    surface.remove(false /* prepareAnimation */);
                }
            } else {
                ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Surface returned was null: %s",
                        ActivityRecord.this);
            }
        }
    }

    private final AddStartingWindow mAddStartingWindow = new AddStartingWindow();

    private int getStartingWindowType(boolean newTask, boolean taskSwitch, boolean processRunning,
            boolean allowTaskSnapshot, boolean activityCreated,
            TaskSnapshot snapshot) {
        if ((newTask || !processRunning || (taskSwitch && !activityCreated))
                && !isActivityTypeHome()) {
            return STARTING_WINDOW_TYPE_SPLASH_SCREEN;
        } else if (taskSwitch && allowTaskSnapshot) {
            if (isSnapshotCompatible(snapshot)) {
                return STARTING_WINDOW_TYPE_SNAPSHOT;
            }
            if (!isActivityTypeHome()) {
                return STARTING_WINDOW_TYPE_SPLASH_SCREEN;
            }
            return STARTING_WINDOW_TYPE_NONE;
        } else {
            return STARTING_WINDOW_TYPE_NONE;
        }
    }

    /**
     * Returns {@code true} if the task snapshot is compatible with this activity (at least the
     * rotation must be the same).
     */
    @VisibleForTesting
    boolean isSnapshotCompatible(TaskSnapshot snapshot) {
        if (snapshot == null) {
            return false;
        }
        if (!snapshot.getTopActivityComponent().equals(mActivityComponent)) {
            // Obsoleted snapshot.
            return false;
        }
        final int rotation = mDisplayContent.rotationForActivityInDifferentOrientation(this);
        final int targetRotation = rotation != ROTATION_UNDEFINED
                // The display may rotate according to the orientation of this activity.
                ? rotation
                // The activity won't change display orientation.
                : task.getWindowConfiguration().getRotation();
        return snapshot.getRotation() == targetRotation;
    }

    /**
     * See {@link SplashScreen#setOnExitAnimationListener}.
     */
    void setCustomizeSplashScreenExitAnimation(boolean enable) {
        if (mHandleExitSplashScreen == enable) {
            return;
        }
        mHandleExitSplashScreen = enable;
    }

    private final Runnable mTransferSplashScreenTimeoutRunnable = new Runnable() {
        @Override
        public void run() {
            synchronized (mAtmService.mGlobalLock) {
                Slog.w(TAG, "Activity transferring splash screen timeout for "
                        + ActivityRecord.this + " state " + mTransferringSplashScreenState);
                if (isTransferringSplashScreen()) {
                    mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_FINISH;
                    removeStartingWindow();
                }
            }
        }
    };

    private void scheduleTransferSplashScreenTimeout() {
        mAtmService.mH.postDelayed(mTransferSplashScreenTimeoutRunnable,
                TRANSFER_SPLASH_SCREEN_TIMEOUT);
    }

    private void removeTransferSplashScreenTimeout() {
        mAtmService.mH.removeCallbacks(mTransferSplashScreenTimeoutRunnable);
    }

    private boolean transferSplashScreenIfNeeded() {
        if (!mWmService.mStartingSurfaceController.DEBUG_ENABLE_SHELL_DRAWER) {
            return false;
        }
        if (!mHandleExitSplashScreen || mStartingSurface == null || mStartingWindow == null
                || mTransferringSplashScreenState == TRANSFER_SPLASH_SCREEN_FINISH) {
            return false;
        }
        if (isTransferringSplashScreen()) {
            return true;
        }
        requestCopySplashScreen();
        return isTransferringSplashScreen();
    }

    private boolean isTransferringSplashScreen() {
        return mTransferringSplashScreenState == TRANSFER_SPLASH_SCREEN_ATTACH_TO_CLIENT
                || mTransferringSplashScreenState == TRANSFER_SPLASH_SCREEN_COPYING;
    }

    private void requestCopySplashScreen() {
        mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_COPYING;
        if (!mAtmService.mTaskOrganizerController.copySplashScreenView(getTask())) {
            mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_FINISH;
            removeStartingWindow();
        }
        scheduleTransferSplashScreenTimeout();
    }

    /**
     * Receive the splash screen data from shell, sending to client.
     * @param parcelable The data to reconstruct the splash screen view, null mean unable to copy.
     */
    void onCopySplashScreenFinish(SplashScreenViewParcelable parcelable) {
        removeTransferSplashScreenTimeout();
        // unable to copy from shell, maybe it's not a splash screen. or something went wrong.
        // either way, abort and reset the sequence.
        if (parcelable == null
                || mTransferringSplashScreenState != TRANSFER_SPLASH_SCREEN_COPYING) {
            if (parcelable != null) {
                parcelable.clearIfNeeded();
            }
            mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_FINISH;
            removeStartingWindow();
            return;
        }
        // schedule attach splashScreen to client
        try {
            mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_ATTACH_TO_CLIENT;
            mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                    TransferSplashScreenViewStateItem.obtain(ATTACH_TO, parcelable));
            scheduleTransferSplashScreenTimeout();
        } catch (Exception e) {
            Slog.w(TAG, "onCopySplashScreenComplete fail: " + this);
            parcelable.clearIfNeeded();
            mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_FINISH;
        }
    }

    private void onSplashScreenAttachComplete() {
        removeTransferSplashScreenTimeout();
        // Client has draw the splash screen, so we can remove the starting window.
        if (mStartingWindow != null) {
            mStartingWindow.hide(false, false);
        }
        try {
            mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                    TransferSplashScreenViewStateItem.obtain(HANDOVER_TO, null));
        } catch (Exception e) {
            Slog.w(TAG, "onSplashScreenAttachComplete fail: " + this);
        }
        // no matter what, remove the starting window.
        mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_FINISH;
        removeStartingWindowAnimation(false /* prepareAnimation */);
    }

    /**
     * Notify the shell ({@link com.android.wm.shell.ShellTaskOrganizer} it should clean up any
     * remaining reference to this {@link ActivityRecord}'s splash screen.
     * @see com.android.wm.shell.ShellTaskOrganizer#onAppSplashScreenViewRemoved(int)
     * @see SplashScreenView#remove()
     */
    void cleanUpSplashScreen() {
        // We only clean up the splash screen if we were supposed to handle it. If it was
        // transferred to another activity, the next one will handle the clean up.
        if (mHandleExitSplashScreen && !startingMoved
                && (mTransferringSplashScreenState == TRANSFER_SPLASH_SCREEN_FINISH
                || mTransferringSplashScreenState == TRANSFER_SPLASH_SCREEN_IDLE)) {
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Cleaning splash screen token=%s", this);
            mAtmService.mTaskOrganizerController.onAppSplashScreenViewRemoved(getTask());
        }
    }

    void removeStartingWindow() {
        removeStartingWindowAnimation(true /* prepareAnimation */);
    }

    void removeStartingWindowAnimation(boolean prepareAnimation) {
        if (transferSplashScreenIfNeeded()) {
            return;
        }
        mTransferringSplashScreenState = TRANSFER_SPLASH_SCREEN_IDLE;
        if (mStartingWindow == null) {
            if (mStartingData != null) {
                // Starting window has not been added yet, but it is scheduled to be added.
                // Go ahead and cancel the request.
                ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Clearing startingData for token=%s", this);
                mStartingData = null;
                // Clean surface up since we don't want the window to be added back, so we don't
                // need to keep the surface to remove it.
                mStartingSurface = null;
            }
            return;
        }

        final WindowManagerPolicy.StartingSurface surface;
        final StartingData startingData = mStartingData;
        if (mStartingData != null) {
            surface = mStartingSurface;
            mStartingData = null;
            mStartingSurface = null;
            mStartingWindow = null;
            startingDisplayed = false;
            if (surface == null) {
                ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "startingWindow was set but "
                        + "startingSurface==null, couldn't remove");
                return;
            }
        } else {
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW,
                    "Tried to remove starting window but startingWindow was null: %s",
                    this);
            return;
        }


        ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Schedule remove starting %s startingWindow=%s"
                + " startingView=%s Callers=%s", this, mStartingWindow, mStartingSurface,
                Debug.getCallers(5));

        final Runnable removeSurface = () -> {
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Removing startingView=%s", surface);
            try {
                surface.remove(prepareAnimation && startingData.needRevealAnimation());
            } catch (Exception e) {
                Slog.w(TAG_WM, "Exception when removing starting window", e);
            }
        };

        if (StartingSurfaceController.DEBUG_ENABLE_SHELL_DRAWER) {
            removeSurface.run();
        } else {
            // Use the same thread to remove the window as we used to add it, as otherwise we end up
            // with things in the view hierarchy being called from different threads.
            mWmService.mAnimationHandler.post(removeSurface);
        }
    }

    private void removeAppTokenFromDisplay() {
        if (mWmService.mRoot == null) return;

        final DisplayContent dc = mWmService.mRoot.getDisplayContent(getDisplayId());
        if (dc == null) {
            Slog.w(TAG, "removeAppTokenFromDisplay: Attempted to remove token: "
                    + appToken + " from non-existing displayId=" + getDisplayId());
            return;
        }
        // Resume key dispatching if it is currently paused before we remove the container.
        resumeKeyDispatchingLocked();
        dc.removeAppToken(appToken.asBinder());
    }

    /**
     * Reparents this activity into {@param newTask} at the provided {@param position}.  The caller
     * should ensure that the {@param newTask} is not already the parent of this activity.
     */
    void reparent(Task newTask, int position, String reason) {
        if (getParent() == null) {
            Slog.w(TAG, "reparent: Attempted to reparent non-existing app token: " + appToken);
            return;
        }
        final Task prevTask = task;
        if (prevTask == newTask) {
            throw new IllegalArgumentException(reason + ": task=" + newTask
                    + " is already the parent of r=" + this);
        }

        ProtoLog.i(WM_DEBUG_ADD_REMOVE, "reparent: moving activity=%s"
                + " to task=%d at %d", this, task.mTaskId, position);
        reparent(newTask, position);
    }

    private boolean isHomeIntent(Intent intent) {
        return ACTION_MAIN.equals(intent.getAction())
                && (intent.hasCategory(CATEGORY_HOME)
                || intent.hasCategory(CATEGORY_SECONDARY_HOME))
                && intent.getCategories().size() == 1
                && intent.getData() == null
                && intent.getType() == null;
    }

    static boolean isMainIntent(Intent intent) {
        return ACTION_MAIN.equals(intent.getAction())
                && intent.hasCategory(CATEGORY_LAUNCHER)
                && intent.getCategories().size() == 1
                && intent.getData() == null
                && intent.getType() == null;
    }

    @VisibleForTesting
    boolean canLaunchHomeActivity(int uid, ActivityRecord sourceRecord) {
        if (uid == Process.myUid() || uid == 0) {
            // System process can launch home activity.
            return true;
        }
        // Allow the recents component to launch the home activity.
        final RecentTasks recentTasks = mTaskSupervisor.mService.getRecentTasks();
        if (recentTasks != null && recentTasks.isCallerRecents(uid)) {
            return true;
        }
        // Resolver or system chooser activity can launch home activity.
        return sourceRecord != null && sourceRecord.isResolverOrDelegateActivity();
    }

    /**
     * @return whether the given package name can launch an assist activity.
     */
    private boolean canLaunchAssistActivity(String packageName) {
        final ComponentName assistComponent =
                mAtmService.mActiveVoiceInteractionServiceComponent;
        if (assistComponent != null) {
            return assistComponent.getPackageName().equals(packageName);
        }
        return false;
    }

    static boolean canLaunchDreamActivity(String packageName) {
        if (packageName == null) {
            return false;
        }

        if (!LocalServices.getService(ActivityTaskManagerInternal.class).isDreaming()) {
            return false;
        }

        final DreamManagerInternal dreamManager =
                LocalServices.getService(DreamManagerInternal.class);

        // Verify that the package is the current active dream or doze component. The
        // getActiveDreamComponent() call path does not acquire the DreamManager lock and thus
        // is safe to use.
        final ComponentName activeDream = dreamManager.getActiveDreamComponent(false /* doze */);
        final ComponentName activeDoze = dreamManager.getActiveDreamComponent(true /* doze */);
        return TextUtils.equals(packageName, getPackageName(activeDream))
                || TextUtils.equals(packageName, getPackageName(activeDoze));
    }

    private static String getPackageName(ComponentName componentName) {
        return componentName != null ? componentName.getPackageName() : null;
    }

    private void setActivityType(boolean componentSpecified, int launchedFromUid, Intent intent,
            ActivityOptions options, ActivityRecord sourceRecord) {
        int activityType = ACTIVITY_TYPE_UNDEFINED;
        if ((!componentSpecified || canLaunchHomeActivity(launchedFromUid, sourceRecord))
                && isHomeIntent(intent) && !isResolverOrDelegateActivity()) {
            // This sure looks like a home activity!
            activityType = ACTIVITY_TYPE_HOME;

            if (info.resizeMode == RESIZE_MODE_FORCE_RESIZEABLE
                    || info.resizeMode == RESIZE_MODE_RESIZEABLE_VIA_SDK_VERSION) {
                // We only allow home activities to be resizeable if they explicitly requested it.
                info.resizeMode = RESIZE_MODE_UNRESIZEABLE;
            }
        } else if (mAtmService.getRecentTasks().isRecentsComponent(mActivityComponent,
                info.applicationInfo.uid)) {
            activityType = ACTIVITY_TYPE_RECENTS;
        } else if (options != null && options.getLaunchActivityType() == ACTIVITY_TYPE_ASSISTANT
                && canLaunchAssistActivity(launchedFromPackage)) {
            activityType = ACTIVITY_TYPE_ASSISTANT;
        } else if (options != null && options.getLaunchActivityType() == ACTIVITY_TYPE_DREAM
                && canLaunchDreamActivity(launchedFromPackage)
                && DreamActivity.class.getName() == info.name) {
            activityType = ACTIVITY_TYPE_DREAM;
        }
        setActivityType(activityType);
    }

    void setTaskToAffiliateWith(Task taskToAffiliateWith) {
        if (launchMode != LAUNCH_SINGLE_INSTANCE && launchMode != LAUNCH_SINGLE_TASK) {
            task.setTaskToAffiliateWith(taskToAffiliateWith);
        }
    }

    /** @return Root task of this activity, null if there is no task. */
    @Nullable
    Task getRootTask() {
        return task != null ? task.getRootTask() : null;
    }

    int getRootTaskId() {
        return task != null ? task.getRootTaskId() : INVALID_TASK_ID;
    }

    /** @return the first organized parent task. */
    @Nullable
    Task getOrganizedTask() {
        return task != null ? task.getOrganizedTask() : null;
    }

    @Override
    @Nullable
    TaskDisplayArea getDisplayArea() {
        return (TaskDisplayArea) super.getDisplayArea();
    }

    @Override
    boolean fillsParent() {
        return occludesParent(true /* includingFinishing */);
    }

    /** Returns true if this activity is not finishing, is opaque and fills the entire space of
     * this task. */
    boolean occludesParent() {
        return occludesParent(false /* includingFinishing */);
    }

    @VisibleForTesting
    boolean occludesParent(boolean includingFinishing) {
        if (!includingFinishing && finishing) {
            return false;
        }
        return mOccludesParent || showWallpaper();
    }

    boolean setOccludesParent(boolean occludesParent) {
        final boolean changed = occludesParent != mOccludesParent;
        mOccludesParent = occludesParent;
        setMainWindowOpaque(occludesParent);
        mWmService.mWindowPlacerLocked.requestTraversal();

        if (changed && task != null && !occludesParent) {
            getRootTask().convertActivityToTranslucent(this);
        }
        // Always ensure visibility if this activity doesn't occlude parent, so the
        // {@link #returningOptions} of the activity under this one can be applied in
        // {@link #handleAlreadyVisible()}.
        if (changed || !occludesParent) {
            mRootWindowContainer.ensureActivitiesVisible(null, 0, !PRESERVE_WINDOWS);
        }
        return changed;
    }

    void setMainWindowOpaque(boolean isOpaque) {
        final WindowState win = findMainWindow();
        if (win == null) {
            return;
        }
        isOpaque = isOpaque & !PixelFormat.formatHasAlpha(win.getAttrs().format);
        win.mWinAnimator.setOpaqueLocked(isOpaque);
    }

    void takeFromHistory() {
        if (inHistory) {
            inHistory = false;
            if (task != null && !finishing) {
                task = null;
            }
            abortAndClearOptionsAnimation();
        }
    }

    boolean isInHistory() {
        return inHistory;
    }

    boolean isInRootTaskLocked() {
        final Task rootTask = getRootTask();
        return rootTask != null && rootTask.isInTask(this) != null;
    }

    boolean isPersistable() {
        return (info.persistableMode == PERSIST_ROOT_ONLY ||
                info.persistableMode == PERSIST_ACROSS_REBOOTS) &&
                (intent == null || (intent.getFlags() & FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) == 0);
    }

    @Override
    boolean isFocusable() {
        return super.isFocusable() && (canReceiveKeys() || isAlwaysFocusable());
    }

    boolean canReceiveKeys() {
        // TODO(156521483): Propagate the state down the hierarchy instead of checking the parent
        return getWindowConfiguration().canReceiveKeys()
                && (task == null || task.getWindowConfiguration().canReceiveKeys());
    }

    boolean isResizeable() {
        return mAtmService.mForceResizableActivities
                || ActivityInfo.isResizeableMode(info.resizeMode)
                || info.supportsPictureInPicture();
    }

    /** @return whether this activity is non-resizeable but is forced to be resizable. */
    boolean canForceResizeNonResizable(int windowingMode) {
        if (windowingMode == WINDOWING_MODE_PINNED && info.supportsPictureInPicture()) {
            return false;
        }
        if (WindowConfiguration.inMultiWindowMode(windowingMode) && supportsMultiWindow()
                && !mAtmService.mForceResizableActivities) {
            // The non resizable app will be letterboxed instead of being forced resizable.
            return false;
        }
        return info.resizeMode != RESIZE_MODE_RESIZEABLE
                && info.resizeMode != RESIZE_MODE_RESIZEABLE_VIA_SDK_VERSION;
    }

    /**
     * @return whether this activity supports PiP multi-window and can be put in the root pinned
     * task.
     */
    boolean supportsPictureInPicture() {
        return mAtmService.mSupportsPictureInPicture && isActivityTypeStandardOrUndefined()
                && info.supportsPictureInPicture();
    }

    /**
     * @return whether this activity supports split-screen multi-window and can be put in
     *         split-screen.
     */
    @Override
    public boolean supportsSplitScreenWindowingMode() {
        return supportsSplitScreenWindowingModeInDisplayArea(getDisplayArea());
    }

    /**
     * @return whether this activity supports split-screen multi-window and can be put in
     *         split-screen if it is in the given {@link TaskDisplayArea}.
     */
    boolean supportsSplitScreenWindowingModeInDisplayArea(@Nullable TaskDisplayArea tda) {
        return super.supportsSplitScreenWindowingMode()
                && mAtmService.mSupportsSplitScreenMultiWindow
                && supportsMultiWindowInDisplayArea(tda);
    }

    boolean supportsFreeform() {
        return supportsFreeformInDisplayArea(getDisplayArea());
    }

    /**
     * @return whether this activity supports freeform multi-window and can be put in the freeform
     *         windowing mode if it is in the given {@link TaskDisplayArea}.
     */
    boolean supportsFreeformInDisplayArea(@Nullable TaskDisplayArea tda) {
        return mAtmService.mSupportsFreeformWindowManagement
                && supportsMultiWindowInDisplayArea(tda);
    }

    boolean supportsMultiWindow() {
        return supportsMultiWindowInDisplayArea(getDisplayArea());
    }

    /**
     * @return whether this activity supports multi-window if it is in the given
     *         {@link TaskDisplayArea}.
     */
    boolean supportsMultiWindowInDisplayArea(@Nullable TaskDisplayArea tda) {
        if (isActivityTypeHome()) {
            return false;
        }
        if (!mAtmService.mSupportsMultiWindow) {
            return false;
        }
        if (tda == null) {
            return false;
        }

        if (!isResizeable() && !tda.supportsNonResizableMultiWindow()) {
            // Not support non-resizable in multi window.
            return false;
        }

        final ActivityInfo.WindowLayout windowLayout = info.windowLayout;
        return windowLayout == null
                || tda.supportsActivityMinWidthHeightMultiWindow(windowLayout.minWidth,
                windowLayout.minHeight);
    }

    /**
     * Check whether this activity can be launched on the specified display.
     *
     * @param displayId Target display id.
     * @return {@code true} if either it is the default display or this activity can be put on a
     *         secondary screen.
     */
    boolean canBeLaunchedOnDisplay(int displayId) {
        return mAtmService.mTaskSupervisor.canPlaceEntityOnDisplay(displayId, launchedFromPid,
                launchedFromUid, info);
    }

    /**
     * @param beforeStopping Whether this check is for an auto-enter-pip operation, that is to say
     *         the activity has requested to enter PiP when it would otherwise be stopped.
     *
     * @return whether this activity is currently allowed to enter PIP.
     */
    boolean checkEnterPictureInPictureState(String caller, boolean beforeStopping) {
        if (!supportsPictureInPicture()) {
            return false;
        }

        // Check app-ops and see if PiP is supported for this package
        if (!checkEnterPictureInPictureAppOpsState()) {
            return false;
        }

        // Check to see if we are in VR mode, and disallow PiP if so
        if (mAtmService.shouldDisableNonVrUiLocked()) {
            return false;
        }

        boolean isKeyguardLocked = mAtmService.isKeyguardLocked();
        boolean isCurrentAppLocked =
                mAtmService.getLockTaskModeState() != LOCK_TASK_MODE_NONE;
        final TaskDisplayArea taskDisplayArea = getDisplayArea();
        boolean hasRootPinnedTask = taskDisplayArea != null && taskDisplayArea.hasPinnedTask();
        // Don't return early if !isNotLocked, since we want to throw an exception if the activity
        // is in an incorrect state
        boolean isNotLockedOrOnKeyguard = !isKeyguardLocked && !isCurrentAppLocked;

        // We don't allow auto-PiP when something else is already pipped.
        if (beforeStopping && hasRootPinnedTask) {
            return false;
        }

        switch (mState) {
            case RESUMED:
                // When visible, allow entering PiP if the app is not locked.  If it is over the
                // keyguard, then we will prompt to unlock in the caller before entering PiP.
                return !isCurrentAppLocked &&
                        (supportsEnterPipOnTaskSwitch || !beforeStopping);
            case PAUSING:
            case PAUSED:
                // When pausing, then only allow enter PiP as in the resume state, and in addition,
                // require that there is not an existing PiP activity and that the current system
                // state supports entering PiP
                return isNotLockedOrOnKeyguard && !hasRootPinnedTask
                        && supportsEnterPipOnTaskSwitch;
            case STOPPING:
                // When stopping in a valid state, then only allow enter PiP as in the pause state.
                // Otherwise, fall through to throw an exception if the caller is trying to enter
                // PiP in an invalid stopping state.
                if (supportsEnterPipOnTaskSwitch) {
                    return isNotLockedOrOnKeyguard && !hasRootPinnedTask;
                }
            default:
                return false;
        }
    }

    /**
     * Sets if this {@link ActivityRecord} is in the process of closing or entering PIP.
     * {@link #mWillCloseOrEnterPip}}
     */
    void setWillCloseOrEnterPip(boolean willCloseOrEnterPip) {
        mWillCloseOrEnterPip = willCloseOrEnterPip;
    }

    /**
     * Returns whether this {@link ActivityRecord} is considered closing. Conditions are either
     * 1. Is this app animating and was requested to be hidden
     * 2. App is delayed closing since it might enter PIP.
     */
    boolean isClosingOrEnteringPip() {
        return (isAnimating(TRANSITION | PARENTS, ANIMATION_TYPE_APP_TRANSITION)
                && !mVisibleRequested) || mWillCloseOrEnterPip;
    }
    /**
     * @return Whether AppOps allows this package to enter picture-in-picture.
     */
    private boolean checkEnterPictureInPictureAppOpsState() {
        return mAtmService.getAppOpsManager().checkOpNoThrow(
                OP_PICTURE_IN_PICTURE, info.applicationInfo.uid, packageName) == MODE_ALLOWED;
    }

    private boolean isAlwaysFocusable() {
        return (info.flags & FLAG_ALWAYS_FOCUSABLE) != 0;
    }

    boolean windowsAreFocusable() {
        return windowsAreFocusable(false /* fromUserTouch */);
    }

    // TODO: Does this really need to be different from isAlwaysFocusable()? For the activity side
    // focusable means resumeable. I guess with that in mind maybe we should rename the other
    // method to isResumeable() or something like that.
    boolean windowsAreFocusable(boolean fromUserTouch) {
        if (!fromUserTouch && mTargetSdk < Build.VERSION_CODES.Q) {
            final int pid = getPid();
            final ActivityRecord topFocusedAppOfMyProcess =
                    mWmService.mRoot.mTopFocusedAppByProcess.get(pid);
            if (topFocusedAppOfMyProcess != null && topFocusedAppOfMyProcess != this) {
                // For the apps below Q, there can be only one app which has the focused window per
                // process, because legacy apps may not be ready for a multi-focus system.
                return false;

            }
        }
        // Check isAttached() because the method may be called when removing this activity from
        // display, and WindowContainer#compareTo will throw exception if it doesn't have a parent
        // when updating focused window from DisplayContent#findFocusedWindow.
        return (canReceiveKeys() || isAlwaysFocusable()) && isAttached();
    }

    /**
     * Move activity with its root task to front and make the root task focused.
     * @param reason the reason to move to top
     * @return {@code true} if the root task is focusable and has been moved to top or the activity
     *         is not yet resumed while the root task is already on top, {@code false} otherwise.
     */
    boolean moveFocusableActivityToTop(String reason) {
        if (!isFocusable()) {
            ProtoLog.d(WM_DEBUG_FOCUS, "moveFocusableActivityToTop: unfocusable "
                    + "activity=%s", this);
            return false;
        }

        final Task rootTask = getRootTask();
        if (rootTask == null) {
            Slog.w(TAG, "moveFocusableActivityToTop: invalid root task: activity="
                    + this + " task=" + task);
            return false;
        }

        if (mRootWindowContainer.getTopResumedActivity() == this
                && getDisplayContent().mFocusedApp == this) {
            ProtoLog.d(WM_DEBUG_FOCUS, "moveFocusableActivityToTop: already on top, "
                    + "activity=%s", this);
            return !isState(RESUMED);
        }
        ProtoLog.d(WM_DEBUG_FOCUS, "moveFocusableActivityToTop: activity=%s", this);

        rootTask.moveToFront(reason, task);
        // Report top activity change to tracking services and WM
        if (mRootWindowContainer.getTopResumedActivity() == this) {
            mAtmService.setResumedActivityUncheckLocked(this, reason);
        }
        return true;
    }

    void finishIfSubActivity(ActivityRecord parent, String otherResultWho, int otherRequestCode) {
        if (resultTo != parent
                || requestCode != otherRequestCode
                || !Objects.equals(resultWho, otherResultWho)) return;

        finishIfPossible("request-sub", false /* oomAdj */);
    }

    /** Finish all activities in the task with the same affinity as this one. */
    boolean finishIfSameAffinity(ActivityRecord r) {
        // End search once we get to the activity that doesn't have the same affinity.
        if (!Objects.equals(r.taskAffinity, taskAffinity)) return true;

        r.finishIfPossible("request-affinity", true /* oomAdj */);
        return false;
    }

    /**
     * Sets the result for activity that started this one, clears the references to activities
     * started for result from this one, and clears new intents.
     */
    private void finishActivityResults(int resultCode, Intent resultData,
            NeededUriGrants resultGrants) {
        // Send the result if needed
        if (resultTo != null) {
            if (DEBUG_RESULTS) {
                Slog.v(TAG_RESULTS, "Adding result to " + resultTo
                        + " who=" + resultWho + " req=" + requestCode
                        + " res=" + resultCode + " data=" + resultData);
            }
            if (resultTo.mUserId != mUserId) {
                if (resultData != null) {
                    resultData.prepareToLeaveUser(mUserId);
                }
            }
            if (info.applicationInfo.uid > 0) {
                mAtmService.mUgmInternal.grantUriPermissionUncheckedFromIntent(resultGrants,
                        resultTo.getUriPermissionsLocked());
            }
            resultTo.addResultLocked(this, resultWho, requestCode, resultCode, resultData);
            resultTo = null;
        } else if (DEBUG_RESULTS) {
            Slog.v(TAG_RESULTS, "No result destination from " + this);
        }

        // Make sure this HistoryRecord is not holding on to other resources,
        // because clients have remote IPC references to this object so we
        // can't assume that will go away and want to avoid circular IPC refs.
        results = null;
        pendingResults = null;
        newIntents = null;
        setSavedState(null /* savedState */);
    }

    /** Activity finish request was not executed. */
    static final int FINISH_RESULT_CANCELLED = 0;
    /** Activity finish was requested, activity will be fully removed later. */
    static final int FINISH_RESULT_REQUESTED = 1;
    /** Activity finish was requested, activity was removed from history. */
    static final int FINISH_RESULT_REMOVED = 2;

    /** Definition of possible results for activity finish request. */
    @IntDef(prefix = { "FINISH_RESULT_" }, value = {
            FINISH_RESULT_CANCELLED,
            FINISH_RESULT_REQUESTED,
            FINISH_RESULT_REMOVED,
    })
    @interface FinishRequest {}

    /**
     * See {@link #finishIfPossible(int, Intent, String, boolean)}
     */
    @FinishRequest int finishIfPossible(String reason, boolean oomAdj) {
        return finishIfPossible(Activity.RESULT_CANCELED,
                null /* resultData */, null /* resultGrants */, reason, oomAdj);
    }

    /**
     * Finish activity if possible. If activity was resumed - we must first pause it to make the
     * activity below resumed. Otherwise we will try to complete the request immediately by calling
     * {@link #completeFinishing(String)}.
     * @return One of {@link FinishRequest} values:
     * {@link #FINISH_RESULT_REMOVED} if this activity has been removed from the history list.
     * {@link #FINISH_RESULT_REQUESTED} if removal process was started, but it is still in the list
     * and will be removed from history later.
     * {@link #FINISH_RESULT_CANCELLED} if activity is already finishing or in invalid state and the
     * request to finish it was not ignored.
     */
    @FinishRequest int finishIfPossible(int resultCode, Intent resultData,
            NeededUriGrants resultGrants, String reason, boolean oomAdj) {
        ProtoLog.v(WM_DEBUG_STATES, "Finishing activity r=%s, result=%d, data=%s, "
                + "reason=%s", this, resultCode, resultData, reason);

        if (finishing) {
            Slog.w(TAG, "Duplicate finish request for r=" + this);
            return FINISH_RESULT_CANCELLED;
        }

        if (!isInRootTaskLocked()) {
            Slog.w(TAG, "Finish request when not in root task for r=" + this);
            return FINISH_RESULT_CANCELLED;
        }

        final Task rootTask = getRootTask();
        final boolean mayAdjustTop = (isState(RESUMED) || rootTask.getResumedActivity() == null)
                && rootTask.isFocusedRootTaskOnDisplay()
                // Do not adjust focus task because the task will be reused to launch new activity.
                && !task.isClearingToReuseTask();
        final boolean shouldAdjustGlobalFocus = mayAdjustTop
                // It must be checked before {@link #makeFinishingLocked} is called, because a
                // root task is not visible if it only contains finishing activities.
                && mRootWindowContainer.isTopDisplayFocusedRootTask(rootTask);

        mAtmService.deferWindowLayout();
        try {
            final Transition newTransition = (!mAtmService.getTransitionController().isCollecting()
                    && mAtmService.getTransitionController().getTransitionPlayer() != null)
                    ? mAtmService.getTransitionController().createTransition(TRANSIT_CLOSE) : null;
            mTaskSupervisor.mNoHistoryActivities.remove(this);
            makeFinishingLocked();
            // Make a local reference to its task since this.task could be set to null once this
            // activity is destroyed and detached from task.
            final Task task = getTask();
            EventLogTags.writeWmFinishActivity(mUserId, System.identityHashCode(this),
                    task.mTaskId, shortComponentName, reason);
            ActivityRecord next = task.getActivityAbove(this);
            if (next != null) {
                if ((intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) {
                    // If the caller asked that this activity (and all above it)
                    // be cleared when the task is reset, don't lose that information,
                    // but propagate it up to the next activity.
                    next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
                }
            }

            pauseKeyDispatchingLocked();

            // We are finishing the top focused activity and its task has nothing to be focused so
            // the next focusable task should be focused.
            if (mayAdjustTop && task.topRunningActivity(true /* focusableOnly */)
                    == null) {
                task.adjustFocusToNextFocusableTask("finish-top", false /* allowFocusSelf */,
                            shouldAdjustGlobalFocus);
            }

            finishActivityResults(resultCode, resultData, resultGrants);

            final boolean endTask = task.getTopNonFinishingActivity() == null
                    && !task.isClearingToReuseTask();
            if (newTransition != null) {
                mAtmService.getTransitionController().requestStartTransition(newTransition,
                        endTask ? task : null, null /* remote */);
            }
            if (isState(RESUMED)) {
                if (endTask) {
                    mAtmService.getTaskChangeNotificationController().notifyTaskRemovalStarted(
                            task.getTaskInfo());
                }
                // Prepare app close transition, but don't execute just yet. It is possible that
                // an activity that will be made resumed in place of this one will immediately
                // launch another new activity. In this case current closing transition will be
                // combined with open transition for the new activity.
                if (DEBUG_VISIBILITY || DEBUG_TRANSITION) {
                    Slog.v(TAG_TRANSITION, "Prepare close transition: finishing " + this);
                }
                mDisplayContent.prepareAppTransition(TRANSIT_CLOSE);

                // When finishing the activity preemptively take the snapshot before the app window
                // is marked as hidden and any configuration changes take place
                // Note that RecentsAnimation will handle task snapshot while switching apps with
                // the best capture timing (e.g. IME window capture),
                // No need additional task capture while task is controlled by RecentsAnimation.
                if (mAtmService.mWindowManager.mTaskSnapshotController != null
                        && !task.isAnimatingByRecents()) {
                    final ArraySet<Task> tasks = Sets.newArraySet(task);
                    mAtmService.mWindowManager.mTaskSnapshotController.snapshotTasks(tasks);
                    mAtmService.mWindowManager.mTaskSnapshotController
                            .addSkipClosingAppSnapshotTasks(tasks);
                }

                // Tell window manager to prepare for this one to be removed.
                setVisibility(false);

                if (task.getPausingActivity() == null) {
                    ProtoLog.v(WM_DEBUG_STATES, "Finish needs to pause: %s", this);
                    if (DEBUG_USER_LEAVING) {
                        Slog.v(TAG_USER_LEAVING, "finish() => pause with userLeaving=false");
                    }
                    task.startPausingLocked(false /* userLeaving */, false /* uiSleeping */,
                            null /* resuming */, "finish");
                }

                if (endTask) {
                    mAtmService.getLockTaskController().clearLockedTask(task);
                    // This activity was in the top focused root task and this is the last
                    // activity in that task, give this activity a higher layer so it can stay on
                    // top before the closing task transition be executed.
                    if (mayAdjustTop) {
                        mNeedsZBoost = true;
                        mDisplayContent.assignWindowLayers(false /* setLayoutNeeded */);
                    }
                }
            } else if (!isState(PAUSING)) {
                if (mVisibleRequested) {
                    // Prepare and execute close transition.
                    prepareActivityHideTransitionAnimation();
                }

                final boolean removedActivity = completeFinishing("finishIfPossible") == null;
                // Performance optimization - only invoke OOM adjustment if the state changed to
                // 'STOPPING'. Otherwise it will not change the OOM scores.
                if (oomAdj && isState(STOPPING)) {
                    mAtmService.updateOomAdj();
                }

                // The following code is an optimization. When the last non-task overlay activity
                // is removed from the task, we remove the entire task from the root task. However,
                // since that is done after the scheduled destroy callback from the activity, that
                // call to change the visibility of the task overlay activities would be out of
                // sync with the activity visibility being set for this finishing activity above.
                // In this case, we can set the visibility of all the task overlay activities when
                // we detect the last one is finishing to keep them in sync.
                if (task.onlyHasTaskOverlayActivities(false /* includeFinishing */)) {
                    task.forAllActivities((r) -> {
                        r.prepareActivityHideTransitionAnimationIfOvarlay();
                    });
                }
                return removedActivity ? FINISH_RESULT_REMOVED : FINISH_RESULT_REQUESTED;
            } else {
                ProtoLog.v(WM_DEBUG_STATES, "Finish waiting for pause of: %s", this);
            }

            return FINISH_RESULT_REQUESTED;
        } finally {
            mAtmService.continueWindowLayout();
        }
    }

    private void prepareActivityHideTransitionAnimationIfOvarlay() {
        if (mTaskOverlay) {
            prepareActivityHideTransitionAnimation();
        }
    }

    private void prepareActivityHideTransitionAnimation() {
        final DisplayContent dc = mDisplayContent;
        dc.prepareAppTransition(TRANSIT_CLOSE);
        setVisibility(false);
        dc.executeAppTransition();
    }

    ActivityRecord completeFinishing(String reason) {
        return completeFinishing(true /* updateVisibility */, reason);
    }

    /**
     * Complete activity finish request that was initiated earlier. If the activity is still
     * pausing we will wait for it to complete its transition. If the activity that should appear in
     * place of this one is not visible yet - we'll wait for it first. Otherwise - activity can be
     * destroyed right away.
     * @param updateVisibility Indicate if need to update activity visibility.
     * @param reason Reason for finishing the activity.
     * @return Flag indicating whether the activity was removed from history.
     */
    ActivityRecord completeFinishing(boolean updateVisibility, String reason) {
        if (!finishing || isState(RESUMED)) {
            throw new IllegalArgumentException(
                    "Activity must be finishing and not resumed to complete, r=" + this
                            + ", finishing=" + finishing + ", state=" + mState);
        }

        if (isState(PAUSING)) {
            // Activity is marked as finishing and will be processed once it completes.
            return this;
        }

        final boolean isCurrentVisible = mVisibleRequested || isState(PAUSED, STARTED);
        if (updateVisibility && isCurrentVisible) {
            boolean ensureVisibility = false;
            if (occludesParent(true /* includingFinishing */)) {
                // If the current activity is not opaque, we need to make sure the visibilities of
                // activities be updated, they may be seen by users.
                ensureVisibility = true;
            } else if (mTaskSupervisor.getKeyguardController().isKeyguardLocked()
                    && mTaskSupervisor.getKeyguardController().topActivityOccludesKeyguard(this)) {
                // Ensure activity visibilities and update lockscreen occluded/dismiss state when
                // finishing the top activity that occluded keyguard. So that, the
                // ActivityStack#mTopActivityOccludesKeyguard can be updated and the activity below
                // won't be resumed.
                ensureVisibility = true;
            }

            if (ensureVisibility) {
                mDisplayContent.ensureActivitiesVisible(null /* starting */, 0 /* configChanges */,
                        false /* preserveWindows */, true /* notifyClients */);
            }
        }

        boolean activityRemoved = false;

        // If this activity is currently visible, and the resumed activity is not yet visible, then
        // hold off on finishing until the resumed one becomes visible.
        // The activity that we are finishing may be over the lock screen. In this case, we do not
        // want to consider activities that cannot be shown on the lock screen as running and should
        // proceed with finishing the activity if there is no valid next top running activity.
        // Note that if this finishing activity is floating task, we don't need to wait the
        // next activity resume and can destroy it directly.
        // TODO(b/137329632): find the next activity directly underneath this one, not just anywhere
        final ActivityRecord next = getDisplayArea().topRunningActivity(
                true /* considerKeyguardState */);
        // isNextNotYetVisible is to check if the next activity is invisible, or it has been
        // requested to be invisible but its windows haven't reported as invisible.  If so, it
        // implied that the current finishing activity should be added into stopping list rather
        // than destroy immediately.
        final boolean isNextNotYetVisible = next != null
                && (!next.nowVisible || !next.mVisibleRequested);

        // Clear last paused activity to ensure top activity can be resumed during sleeping.
        if (isNextNotYetVisible && mDisplayContent.isSleeping()
                && next == next.getRootTask().mLastPausedActivity) {
            next.getRootTask().mLastPausedActivity = null;
        }

        if (isCurrentVisible) {
            if (isNextNotYetVisible) {
                // Add this activity to the list of stopping activities. It will be processed and
                // destroyed when the next activity reports idle.
                addToStopping(false /* scheduleIdle */, false /* idleDelayed */,
                        "completeFinishing");
                setState(STOPPING, "completeFinishing");
            } else if (addToFinishingAndWaitForIdle()) {
                // We added this activity to the finishing list and something else is becoming
                // resumed. The activity will complete finishing when the next activity reports
                // idle. No need to do anything else here.
            } else {
                // Not waiting for the next one to become visible, and nothing else will be
                // resumed in place of this activity - requesting destruction right away.
                activityRemoved = destroyIfPossible(reason);
            }
        } else {
            // Just need to make sure the next activities can be resumed (if needed) and is free
            // to destroy this activity since it is currently not visible.
            addToFinishingAndWaitForIdle();
            activityRemoved = destroyIfPossible(reason);
        }

        return activityRemoved ? null : this;
    }

    /**
     * Destroy and cleanup the activity both on client and server if possible. If activity is the
     * last one left on display with home root task and there is no other running activity - delay
     * destroying it until the next one starts.
     */
    boolean destroyIfPossible(String reason) {
        setState(FINISHING, "destroyIfPossible");

        // Make sure the record is cleaned out of other places.
        mTaskSupervisor.mStoppingActivities.remove(this);

        final Task rootTask = getRootTask();
        final TaskDisplayArea taskDisplayArea = getDisplayArea();
        // TODO(b/137329632): Exclude current activity when looking for the next one with
        // DisplayContent#topRunningActivity().
        final ActivityRecord next = taskDisplayArea.topRunningActivity();
        final boolean isLastRootTaskOverEmptyHome =
                next == null && rootTask.isFocusedRootTaskOnDisplay()
                        && taskDisplayArea.getOrCreateRootHomeTask() != null;
        if (isLastRootTaskOverEmptyHome) {
            // Don't destroy activity immediately if this is the last activity on the display and
            // the display contains root home task. Although there is no next activity at the
            // moment, another home activity should be started later. Keep this activity alive
            // until next home activity is resumed. This way the user won't see a temporary black
            // screen.
            addToFinishingAndWaitForIdle();
            return false;
        }
        makeFinishingLocked();

        final boolean activityRemoved = destroyImmediately("finish-imm:" + reason);

        // If the display does not have running activity, the configuration may need to be
        // updated for restoring original orientation of the display.
        if (next == null) {
            mRootWindowContainer.ensureVisibilityAndConfig(next, getDisplayId(),
                    false /* markFrozenIfConfigChanged */, true /* deferResume */);
        }
        if (activityRemoved) {
            mRootWindowContainer.resumeFocusedTasksTopActivities();
        }

        ProtoLog.d(WM_DEBUG_CONTAINERS, "destroyIfPossible: r=%s destroy returned "
                + "removed=%s", this, activityRemoved);

        return activityRemoved;
    }

    /**
     * Add this activity to the list of finishing and trigger resuming of activities in focused
     * root tasks.
     * @return {@code true} if some other activity is being resumed as a result of this call.
     */
    @VisibleForTesting
    boolean addToFinishingAndWaitForIdle() {
        ProtoLog.v(WM_DEBUG_STATES, "Enqueueing pending finish: %s", this);
        setState(FINISHING, "addToFinishingAndWaitForIdle");
        if (!mTaskSupervisor.mFinishingActivities.contains(this)) {
            mTaskSupervisor.mFinishingActivities.add(this);
        }
        resumeKeyDispatchingLocked();
        return mRootWindowContainer.resumeFocusedTasksTopActivities();
    }

    /**
     * Destroy the current CLIENT SIDE instance of an activity. This may be called both when
     * actually finishing an activity, or when performing a configuration switch where we destroy
     * the current client-side object but then create a new client-side object for this same
     * HistoryRecord.
     * Normally the server-side record will be removed when the client reports back after
     * destruction. If, however, at this point there is no client process attached, the record will
     * be removed immediately.
     *
     * @return {@code true} if activity was immediately removed from history, {@code false}
     * otherwise.
     */
    boolean destroyImmediately(String reason) {
        if (DEBUG_SWITCH || DEBUG_CLEANUP) {
            Slog.v(TAG_SWITCH, "Removing activity from " + reason + ": token=" + this
                    + ", app=" + (hasProcess() ? app.mName : "(null)"));
        }

        if (isState(DESTROYING, DESTROYED)) {
            ProtoLog.v(WM_DEBUG_STATES, "activity %s already destroying, skipping "
                    + "request with reason:%s", this, reason);
            return false;
        }

        EventLogTags.writeWmDestroyActivity(mUserId, System.identityHashCode(this),
                task.mTaskId, shortComponentName, reason);

        boolean removedFromHistory = false;

        cleanUp(false /* cleanServices */, false /* setState */);

        if (hasProcess()) {
            app.removeActivity(this, true /* keepAssociation */);
            if (!app.hasActivities()) {
                mAtmService.clearHeavyWeightProcessIfEquals(app);
            }

            boolean skipDestroy = false;

            try {
                if (DEBUG_SWITCH) Slog.i(TAG_SWITCH, "Destroying: " + this);
                mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                        DestroyActivityItem.obtain(finishing, configChangeFlags));
            } catch (Exception e) {
                // We can just ignore exceptions here...  if the process has crashed, our death
                // notification will clean things up.
                if (finishing) {
                    removeFromHistory(reason + " exceptionInScheduleDestroy");
                    removedFromHistory = true;
                    skipDestroy = true;
                }
            }

            nowVisible = false;

            // If the activity is finishing, we need to wait on removing it from the list to give it
            // a chance to do its cleanup.  During that time it may make calls back with its token
            // so we need to be able to find it on the list and so we don't want to remove it from
            // the list yet.  Otherwise, we can just immediately put it in the destroyed state since
            // we are not removing it from the list.
            if (finishing && !skipDestroy) {
                ProtoLog.v(WM_DEBUG_STATES, "Moving to DESTROYING: %s (destroy requested)", this);
                setState(DESTROYING,
                        "destroyActivityLocked. finishing and not skipping destroy");
                mAtmService.mH.postDelayed(mDestroyTimeoutRunnable, DESTROY_TIMEOUT);
            } else {
                ProtoLog.v(WM_DEBUG_STATES, "Moving to DESTROYED: %s "
                        + "(destroy skipped)", this);
                setState(DESTROYED,
                        "destroyActivityLocked. not finishing or skipping destroy");
                if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during destroy for activity " + this);
                detachFromProcess();
            }
        } else {
            // Remove this record from the history.
            if (finishing) {
                removeFromHistory(reason + " hadNoApp");
                removedFromHistory = true;
            } else {
                ProtoLog.v(WM_DEBUG_STATES, "Moving to DESTROYED: %s (no app)", this);
                setState(DESTROYED, "destroyActivityLocked. not finishing and had no app");
            }
        }

        configChangeFlags = 0;

        return removedFromHistory;
    }

    boolean safelyDestroy(String reason) {
        if (isDestroyable()) {
            if (DEBUG_SWITCH) {
                final Task task = getTask();
                Slog.v(TAG_SWITCH, "Safely destroying " + this + " in state " + getState()
                        + " resumed=" + task.getResumedActivity()
                        + " pausing=" + task.getPausingActivity()
                        + " for reason " + reason);
            }
            return destroyImmediately(reason);
        }
        return false;
    }

    /** Note: call {@link #cleanUp(boolean, boolean)} before this method. */
    void removeFromHistory(String reason) {
        finishActivityResults(Activity.RESULT_CANCELED,
                null /* resultData */, null /* resultGrants */);
        makeFinishingLocked();

        ProtoLog.i(WM_DEBUG_ADD_REMOVE, "Removing activity %s, reason= %s "
                        + "callers=%s", this, reason, Debug.getCallers(5));

        takeFromHistory();
        removeTimeouts();
        ProtoLog.v(WM_DEBUG_STATES, "Moving to DESTROYED: %s (removed from history)",
                this);
        setState(DESTROYED, "removeFromHistory");
        if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during remove for activity " + this);
        detachFromProcess();
        removeAppTokenFromDisplay();

        cleanUpActivityServices();
        removeUriPermissionsLocked();
    }

    void detachFromProcess() {
        if (app != null) {
            app.removeActivity(this, false /* keepAssociation */);
        }
        app = null;
    }

    void makeFinishingLocked() {
        if (finishing) {
            return;
        }
        finishing = true;
        if (stopped) {
            abortAndClearOptionsAnimation();
        }
        mAtmService.getTransitionController().requestTransitionIfNeeded(TRANSIT_CLOSE, this);
    }

    /**
     * This method is to only be called from the client via binder when the activity is destroyed
     * AND finished.
     */
    void destroyed(String reason) {
        removeDestroyTimeout();

        ProtoLog.d(WM_DEBUG_CONTAINERS, "activityDestroyedLocked: r=%s", this);

        if (!isState(DESTROYING, DESTROYED)) {
            throw new IllegalStateException(
                    "Reported destroyed for activity that is not destroying: r=" + this);
        }

        if (isInRootTaskLocked()) {
            cleanUp(true /* cleanServices */, false /* setState */);
            removeFromHistory(reason);
        }

        mRootWindowContainer.resumeFocusedTasksTopActivities();
    }

    /**
     * Perform the common clean-up of an activity record.  This is called both as part of
     * destroyActivityLocked() (when destroying the client-side representation) and cleaning things
     * up as a result of its hosting processing going away, in which case there is no remaining
     * client-side state to destroy so only the cleanup here is needed.
     *
     * Note: Call before {@link #removeFromHistory(String)}.
     */
    void cleanUp(boolean cleanServices, boolean setState) {
        task.cleanUpActivityReferences(this);
        clearLastParentBeforePip();

        // Clean up the splash screen if it was still displayed.
        cleanUpSplashScreen();

        deferRelaunchUntilPaused = false;
        frozenBeforeDestroy = false;

        if (setState) {
            setState(DESTROYED, "cleanUp");
            if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during cleanUp for activity " + this);
            detachFromProcess();
        }

        // Inform supervisor the activity has been removed.
        mTaskSupervisor.cleanupActivity(this);

        // Remove any pending results.
        if (finishing && pendingResults != null) {
            for (WeakReference<PendingIntentRecord> apr : pendingResults) {
                PendingIntentRecord rec = apr.get();
                if (rec != null) {
                    mAtmService.mPendingIntentController.cancelIntentSender(rec,
                            false /* cleanActivity */);
                }
            }
            pendingResults = null;
        }

        if (cleanServices) {
            cleanUpActivityServices();
        }

        // Get rid of any pending idle timeouts.
        removeTimeouts();
        // Clean-up activities are no longer relaunching (e.g. app process died). Notify window
        // manager so it can update its bookkeeping.
        clearRelaunching();
    }

    boolean isRelaunching() {
        return mPendingRelaunchCount > 0;
    }

    @VisibleForTesting
    void startRelaunching() {
        if (mPendingRelaunchCount == 0) {
            mRelaunchStartTime = SystemClock.elapsedRealtime();
        }
        clearAllDrawn();

        mPendingRelaunchCount++;
    }

    void finishRelaunching() {
        mTaskSupervisor.getActivityMetricsLogger().notifyActivityRelaunched(this);

        if (mPendingRelaunchCount > 0) {
            mPendingRelaunchCount--;
        } else {
            // Update keyguard flags upon finishing relaunch.
            checkKeyguardFlagsChanged();
        }

        final Task rootTask = getRootTask();
        if (rootTask != null && rootTask.shouldSleepOrShutDownActivities()) {
            // Activity is always relaunched to either resumed or paused state. If it was
            // relaunched while hidden (by keyguard or smth else), it should be stopped.
            rootTask.ensureActivitiesVisible(null /* starting */, 0 /* configChanges */,
                    false /* preserveWindows */);
        }
    }

    void clearRelaunching() {
        if (mPendingRelaunchCount == 0) {
            return;
        }
        mPendingRelaunchCount = 0;
        mRelaunchStartTime = 0;
    }

    /**
     * Perform clean-up of service connections in an activity record.
     */
    private void cleanUpActivityServices() {
        if (mServiceConnectionsHolder == null) {
            return;
        }
        // Throw away any services that have been bound by this activity.
        mServiceConnectionsHolder.disconnectActivityFromServices();
        // This activity record is removing, make sure not to disconnect twice.
        mServiceConnectionsHolder = null;
    }

    /**
     * Detach this activity from process and clear the references to it. If the activity is
     * finishing or has no saved state or crashed many times, it will also be removed from history.
     */
    void handleAppDied() {
        final boolean remove;
        if ((mRelaunchReason == RELAUNCH_REASON_WINDOWING_MODE_RESIZE
                || mRelaunchReason == RELAUNCH_REASON_FREE_RESIZE)
                && launchCount < 3 && !finishing) {
            // If the process crashed during a resize, always try to relaunch it, unless it has
            // failed more than twice. Skip activities that's already finishing cleanly by itself.
            remove = false;
        } else if ((!mHaveState && !stateNotNeeded
                && !isState(ActivityState.RESTARTING_PROCESS)) || finishing) {
            // Don't currently have state for the activity, or it is finishing -- always remove it.
            remove = true;
        } else if (!mVisibleRequested && launchCount > 2
                && lastLaunchTime > (SystemClock.uptimeMillis() - 60000)) {
            // We have launched this activity too many times since it was able to run, so give up
            // and remove it. (Note if the activity is visible, we don't remove the record. We leave
            // the dead window on the screen but the process will not be restarted unless user
            // explicitly tap on it.)
            remove = true;
        } else {
            // The process may be gone, but the activity lives on!
            remove = false;
        }
        if (remove) {
            ProtoLog.i(WM_DEBUG_ADD_REMOVE, "Removing activity %s hasSavedState=%b "
                    + "stateNotNeeded=%s finishing=%b state=%s callers=%s", this,
                    mHaveState, stateNotNeeded, finishing, mState, Debug.getCallers(5));
            if (!finishing || (app != null && app.isRemoved())) {
                Slog.w(TAG, "Force removing " + this + ": app died, no saved state");
                EventLogTags.writeWmFinishActivity(mUserId, System.identityHashCode(this),
                        task != null ? task.mTaskId : -1, shortComponentName,
                        "proc died without state saved");
            }
        } else {
            // We have the current state for this activity, so it can be restarted later
            // when needed.
            if (DEBUG_APP) {
                Slog.v(TAG_APP, "Keeping entry during removeHistory for activity " + this);
            }
            // Set nowVisible to previous visible state. If the app was visible while it died, we
            // leave the dead window on screen so it's basically visible. This is needed when user
            // later tap on the dead window, we need to stop other apps when user transfers focus
            // to the restarted activity.
            nowVisible = mVisibleRequested;
        }
        cleanUp(true /* cleanServices */, true /* setState */);
        if (remove) {
            removeFromHistory("appDied");
        }
    }

    @Override
    void removeImmediately() {
        if (!finishing) {
            // If Task#removeImmediately is called directly with alive activities, ensure that the
            // activities are destroyed and detached from process.
            destroyImmediately("removeImmediately");
        }
        onRemovedFromDisplay();
        super.removeImmediately();
    }

    @Override
    void removeIfPossible() {
        mIsExiting = false;
        removeAllWindowsIfPossible();
        removeImmediately();
    }

    @Override
    boolean handleCompleteDeferredRemoval() {
        if (mIsExiting) {
            removeIfPossible();
        }
        return super.handleCompleteDeferredRemoval();
    }

    void onRemovedFromDisplay() {
        if (mRemovingFromDisplay) {
            return;
        }
        mRemovingFromDisplay = true;

        ProtoLog.v(WM_DEBUG_APP_TRANSITIONS, "Removing app token: %s", this);

        commitVisibility(false /* visible */, true /* performLayout */);

        getDisplayContent().mOpeningApps.remove(this);
        getDisplayContent().mUnknownAppVisibilityController.appRemovedOrHidden(this);
        mWmService.mTaskSnapshotController.onAppRemoved(this);
        mTaskSupervisor.getActivityMetricsLogger().notifyActivityRemoved(this);
        mTaskSupervisor.mStoppingActivities.remove(this);
        waitingToShow = false;

        // TODO(b/169035022): move to a more-appropriate place.
        mAtmService.getTransitionController().collect(this);
        // Defer removal of this activity when either a child is animating, or app transition is on
        // going. App transition animation might be applied on the parent task not on the activity,
        // but the actual frame buffer is associated with the activity, so we have to keep the
        // activity while a parent is animating.
        boolean delayed = isAnimating(TRANSITION | PARENTS | CHILDREN,
                ANIMATION_TYPE_APP_TRANSITION | ANIMATION_TYPE_WINDOW_ANIMATION);
        if (getDisplayContent().mClosingApps.contains(this)) {
            delayed = true;
        } else if (getDisplayContent().mAppTransition.isTransitionSet()) {
            getDisplayContent().mClosingApps.add(this);
            delayed = true;
        } else if (mAtmService.getTransitionController().inTransition()) {
            delayed = true;
        }

        ProtoLog.v(WM_DEBUG_APP_TRANSITIONS,
                "Removing app %s delayed=%b animation=%s animating=%b", this, delayed,
                getAnimation(),
                isAnimating(TRANSITION | PARENTS, ANIMATION_TYPE_APP_TRANSITION));

        ProtoLog.v(WM_DEBUG_ADD_REMOVE, "removeAppToken: %s"
                + " delayed=%b Callers=%s", this, delayed, Debug.getCallers(4));

        if (mStartingData != null) {
            removeStartingWindow();
        }

        // If app transition animation was running for this activity, then we need to ensure that
        // the app transition notifies that animations have completed in
        // DisplayContent.handleAnimatingStoppedAndTransition(), so add to that list now
        if (isAnimating(TRANSITION | PARENTS, ANIMATION_TYPE_APP_TRANSITION)) {
            getDisplayContent().mNoAnimationNotifyOnTransitionFinished.add(token);
        }

        final Task rootTask = getRootTask();
        if (delayed && !isEmpty()) {
            // set the token aside because it has an active animation to be finished
            ProtoLog.v(WM_DEBUG_ADD_REMOVE,
                    "removeAppToken make exiting: %s", this);
            if (rootTask != null) {
                rootTask.mExitingActivities.add(this);
            }
            mIsExiting = true;
        } else {
            // Make sure there is no animation running on this token, so any windows associated
            // with it will be removed as soon as their animations are complete
            cancelAnimation();
            if (rootTask != null) {
                rootTask.mExitingActivities.remove(this);
            }
            removeIfPossible();
        }

        stopFreezingScreen(true, true);

        final DisplayContent dc = getDisplayContent();
        if (dc.mFocusedApp == this) {
            ProtoLog.v(WM_DEBUG_FOCUS_LIGHT,
                    "Removing focused app token:%s displayId=%d", this,
                    dc.getDisplayId());
            dc.setFocusedApp(null);
            mWmService.updateFocusedWindowLocked(UPDATE_FOCUS_NORMAL, true /*updateInputWindows*/);
        }

        mLetterboxUiController.destroy();

        if (!delayed) {
            updateReportedVisibilityLocked();
        }

        // Reset the last saved PiP snap fraction on removal.
        mDisplayContent.mPinnedTaskController.onActivityHidden(mActivityComponent);
        mWmService.mEmbeddedWindowController.onActivityRemoved(this);
        mRemovingFromDisplay = false;
    }

    /**
     * Returns true if the new child window we are adding to this token is considered greater than
     * the existing child window in this token in terms of z-order.
     */
    @Override
    protected boolean isFirstChildWindowGreaterThanSecond(WindowState newWindow,
            WindowState existingWindow) {
        final int type1 = newWindow.mAttrs.type;
        final int type2 = existingWindow.mAttrs.type;

        // Base application windows should be z-ordered BELOW all other windows in the app token.
        if (type1 == TYPE_BASE_APPLICATION && type2 != TYPE_BASE_APPLICATION) {
            return false;
        } else if (type1 != TYPE_BASE_APPLICATION && type2 == TYPE_BASE_APPLICATION) {
            return true;
        }

        // Starting windows should be z-ordered ABOVE all other windows in the app token.
        if (type1 == TYPE_APPLICATION_STARTING && type2 != TYPE_APPLICATION_STARTING) {
            return true;
        } else if (type1 != TYPE_APPLICATION_STARTING && type2 == TYPE_APPLICATION_STARTING) {
            return false;
        }

        // Otherwise the new window is greater than the existing window.
        return true;
    }

    /**
     * @return {@code true} if starting window is in app's hierarchy.
     */
    boolean hasStartingWindow() {
        if (startingDisplayed || mStartingData != null) {
            return true;
        }
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            if (getChildAt(i).mAttrs.type == TYPE_APPLICATION_STARTING) {
                return true;
            }
        }
        return false;
    }

    boolean isLastWindow(WindowState win) {
        return mChildren.size() == 1 && mChildren.get(0) == win;
    }

    @Override
    void addWindow(WindowState w) {
        super.addWindow(w);

        boolean gotReplacementWindow = false;
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState candidate = mChildren.get(i);
            gotReplacementWindow |= candidate.setReplacementWindowIfNeeded(w);
        }

        // if we got a replacement window, reset the timeout to give drawing more time
        if (gotReplacementWindow) {
            mWmService.scheduleWindowReplacementTimeouts(this);
        }
        checkKeyguardFlagsChanged();
    }

    @Override
    void removeChild(WindowState child) {
        if (!mChildren.contains(child)) {
            // This can be true when testing.
            return;
        }
        super.removeChild(child);
        checkKeyguardFlagsChanged();
        updateLetterboxSurface(child);
    }

    void onWindowReplacementTimeout() {
        for (int i = mChildren.size() - 1; i >= 0; --i) {
            (mChildren.get(i)).onWindowReplacementTimeout();
        }
    }

    void setAppLayoutChanges(int changes, String reason) {
        if (!mChildren.isEmpty()) {
            final DisplayContent dc = getDisplayContent();
            dc.pendingLayoutChanges |= changes;
            if (DEBUG_LAYOUT_REPEATS) {
                mWmService.mWindowPlacerLocked.debugLayoutRepeats(reason, dc.pendingLayoutChanges);
            }
        }
    }

    void removeReplacedWindowIfNeeded(WindowState replacement) {
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState win = mChildren.get(i);
            if (win.removeReplacedWindowIfNeeded(replacement)) {
                return;
            }
        }
    }

    boolean transferStartingWindow(IBinder transferFrom) {
        final ActivityRecord fromActivity = getDisplayContent().getActivityRecord(transferFrom);
        if (fromActivity == null) {
            return false;
        }

        final WindowState tStartingWindow = fromActivity.mStartingWindow;
        if (tStartingWindow != null && fromActivity.mStartingSurface != null) {
            // In this case, the starting icon has already been displayed, so start
            // letting windows get shown immediately without any more transitions.
            getDisplayContent().mSkipAppTransitionAnimation = true;

            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Moving existing starting %s"
                    + " from %s to %s", tStartingWindow, fromActivity, this);

            final long origId = Binder.clearCallingIdentity();
            try {
                // Link the fixed rotation transform to this activity since we are transferring the
                // starting window.
                if (fromActivity.hasFixedRotationTransform()) {
                    mDisplayContent.handleTopActivityLaunchingInDifferentOrientation(this,
                            false /* checkOpening */);
                }

                // Transfer the starting window over to the new token.
                mStartingData = fromActivity.mStartingData;
                mStartingSurface = fromActivity.mStartingSurface;
                startingDisplayed = fromActivity.startingDisplayed;
                fromActivity.startingDisplayed = false;
                mStartingWindow = tStartingWindow;
                reportedVisible = fromActivity.reportedVisible;
                fromActivity.mStartingData = null;
                fromActivity.mStartingSurface = null;
                fromActivity.mStartingWindow = null;
                fromActivity.startingMoved = true;
                tStartingWindow.mToken = this;
                tStartingWindow.mActivityRecord = this;

                ProtoLog.v(WM_DEBUG_ADD_REMOVE,
                        "Removing starting %s from %s", tStartingWindow, fromActivity);
                mAtmService.getTransitionController().collect(tStartingWindow);
                tStartingWindow.reparent(this, POSITION_TOP);

                // Propagate other interesting state between the tokens. If the old token is displayed,
                // we should immediately force the new one to be displayed. If it is animating, we need
                // to move that animation to the new one.
                if (fromActivity.allDrawn) {
                    allDrawn = true;
                }
                if (fromActivity.firstWindowDrawn) {
                    firstWindowDrawn = true;
                }
                if (fromActivity.isVisible()) {
                    setVisible(true);
                    setVisibleRequested(true);
                    mVisibleSetFromTransferredStartingWindow = true;
                }
                setClientVisible(fromActivity.isClientVisible());

                if (fromActivity.isAnimating()) {
                    transferAnimation(fromActivity);

                    // When transferring an animation, we no longer need to apply an animation to
                    // the token we transfer the animation over. Thus, set this flag to indicate
                    // we've transferred the animation.
                    mUseTransferredAnimation = true;
                } else if (mAtmService.getTransitionController().getTransitionPlayer() != null) {
                    // In the new transit system, just set this every time we transfer the window
                    mUseTransferredAnimation = true;
                }
                // Post cleanup after the visibility and animation are transferred.
                fromActivity.postWindowRemoveStartingWindowCleanup(tStartingWindow);
                fromActivity.mVisibleSetFromTransferredStartingWindow = false;

                mWmService.updateFocusedWindowLocked(
                        UPDATE_FOCUS_WILL_PLACE_SURFACES, true /*updateInputWindows*/);
                getDisplayContent().setLayoutNeeded();
                mWmService.mWindowPlacerLocked.performSurfacePlacement();
            } finally {
                Binder.restoreCallingIdentity(origId);
            }
            return true;
        } else if (fromActivity.mStartingData != null) {
            // The previous app was getting ready to show a
            // starting window, but hasn't yet done so.  Steal it!
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW,
                    "Moving pending starting from %s to %s", fromActivity, this);
            mStartingData = fromActivity.mStartingData;
            fromActivity.mStartingData = null;
            fromActivity.startingMoved = true;
            scheduleAddStartingWindow();
            return true;
        }

        // TODO: Transfer thumbnail

        return false;
    }

    /**
     * Tries to transfer the starting window from a token that's above ourselves in the task but
     * not visible anymore. This is a common scenario apps use: Trampoline activity T start main
     * activity M in the same task. Now, when reopening the task, T starts on top of M but then
     * immediately finishes after, so we have to transfer T to M.
     */
    void transferStartingWindowFromHiddenAboveTokenIfNeeded() {
        final PooledFunction p = PooledLambda.obtainFunction(ActivityRecord::transferStartingWindow,
                this, PooledLambda.__(ActivityRecord.class));
        task.forAllActivities(p);
        p.recycle();
    }

    private boolean transferStartingWindow(ActivityRecord fromActivity) {
        if (fromActivity == this) return true;

        return !fromActivity.mVisibleRequested && transferStartingWindow(fromActivity.token);
    }

    void checkKeyguardFlagsChanged() {
        final boolean containsDismissKeyguard = containsDismissKeyguardWindow();
        final boolean containsShowWhenLocked = containsShowWhenLockedWindow();
        if (containsDismissKeyguard != mLastContainsDismissKeyguardWindow
                || containsShowWhenLocked != mLastContainsShowWhenLockedWindow) {
            mWmService.notifyKeyguardFlagsChanged(null /* callback */,
                    getDisplayContent().getDisplayId());
        }
        mLastContainsDismissKeyguardWindow = containsDismissKeyguard;
        mLastContainsShowWhenLockedWindow = containsShowWhenLocked;
        mLastContainsTurnScreenOnWindow = containsTurnScreenOnWindow();
    }

    boolean containsDismissKeyguardWindow() {
        // Window state is transient during relaunch. We are not guaranteed to be frozen during the
        // entirety of the relaunch.
        if (isRelaunching()) {
            return mLastContainsDismissKeyguardWindow;
        }

        for (int i = mChildren.size() - 1; i >= 0; i--) {
            if ((mChildren.get(i).mAttrs.flags & FLAG_DISMISS_KEYGUARD) != 0) {
                return true;
            }
        }
        return false;
    }

    boolean containsShowWhenLockedWindow() {
        // When we are relaunching, it is possible for us to be unfrozen before our previous
        // windows have been added back. Using the cached value ensures that our previous
        // showWhenLocked preference is honored until relaunching is complete.
        if (isRelaunching()) {
            return mLastContainsShowWhenLockedWindow;
        }

        for (int i = mChildren.size() - 1; i >= 0; i--) {
            if ((mChildren.get(i).mAttrs.flags & FLAG_SHOW_WHEN_LOCKED) != 0) {
                return true;
            }
        }

        return false;
    }

    void setShowWhenLocked(boolean showWhenLocked) {
        mShowWhenLocked = showWhenLocked;
        mAtmService.mRootWindowContainer.ensureActivitiesVisible(null /* starting */,
                0 /* configChanges */, false /* preserveWindows */);
    }

    void setInheritShowWhenLocked(boolean inheritShowWhenLocked) {
        mInheritShownWhenLocked = inheritShowWhenLocked;
        mAtmService.mRootWindowContainer.ensureActivitiesVisible(null /* starting */,
                0 /* configChanges */, false /* preserveWindows */);
    }

    /**
     * @return {@code true} if the activity windowing mode is not in
     *         {@link android.app.WindowConfiguration#WINDOWING_MODE_PINNED} and a) activity
     *         contains windows that have {@link LayoutParams#FLAG_SHOW_WHEN_LOCKED} set or if the
     *         activity has set {@link #mShowWhenLocked}, or b) if the activity has set
     *         {@link #mInheritShownWhenLocked} and the activity behind this satisfies the
     *         conditions a) above.
     *         Multi-windowing mode will be exited if {@code true} is returned.
     */
    boolean canShowWhenLocked() {
        if (!inPinnedWindowingMode() && (mShowWhenLocked || containsShowWhenLockedWindow())) {
            return true;
        } else if (mInheritShownWhenLocked) {
            final ActivityRecord r = task.getActivityBelow(this);
            return r != null && !r.inPinnedWindowingMode() && (r.mShowWhenLocked
                    || r.containsShowWhenLockedWindow());
        } else {
            return false;
        }
    }

    /**
     * @return Whether we are allowed to show non-starting windows at the moment. We disallow
     *         showing windows during transitions in case we have windows that have wide-color-gamut
     *         color mode set to avoid jank in the middle of the transition.
     */
    boolean canShowWindows() {
        return allDrawn && !(isAnimating(PARENTS, ANIMATION_TYPE_APP_TRANSITION)
                && hasNonDefaultColorWindow());
    }

    /**
     * @return true if we have a window that has a non-default color mode set; false otherwise.
     */
    private boolean hasNonDefaultColorWindow() {
        return forAllWindows(ws -> ws.mAttrs.getColorMode() != COLOR_MODE_DEFAULT,
                true /* topToBottom */);
    }

    WindowState getImeTargetBelowWindow(WindowState w) {
        final int index = mChildren.indexOf(w);
        if (index > 0) {
            return mChildren.get(index - 1)
                    .getWindow(WindowState::canBeImeTarget);
        }
        return null;
    }

    WindowState getHighestAnimLayerWindow(WindowState currentTarget) {
        WindowState candidate = null;
        for (int i = mChildren.indexOf(currentTarget); i >= 0; i--) {
            final WindowState w = mChildren.get(i);
            if (w.mRemoved) {
                continue;
            }
            if (candidate == null) {
                candidate = w;
            }
        }
        return candidate;
    }

    @Override
    boolean forAllWindows(ToBooleanFunction<WindowState> callback, boolean traverseTopToBottom) {
        // For legacy reasons we process the TaskStack.mExitingActivities first in DisplayContent
        // before the non-exiting app tokens. So, we skip the exiting app tokens here.
        // TODO: Investigate if we need to continue to do this or if we can just process them
        // in-order.
        if (mIsExiting && !forAllWindowsUnchecked(WindowState::waitingForReplacement, true)) {
            return false;
        }
        return forAllWindowsUnchecked(callback, traverseTopToBottom);
    }

    boolean forAllWindowsUnchecked(ToBooleanFunction<WindowState> callback,
            boolean traverseTopToBottom) {
        return super.forAllWindows(callback, traverseTopToBottom);
    }

    @Override
    boolean forAllActivities(
            Function<ActivityRecord, Boolean> callback, boolean traverseTopToBottom) {
        return callback.apply(this);
    }

    @Override
    void forAllActivities(Consumer<ActivityRecord> callback, boolean traverseTopToBottom) {
        callback.accept(this);
    }

    @Override
    ActivityRecord getActivity(Predicate<ActivityRecord> callback, boolean traverseTopToBottom,
            ActivityRecord boundary) {
        return callback.test(this) ? this : null;
    }

    @Override
    protected void setLayer(Transaction t, int layer) {
        if (!mSurfaceAnimator.hasLeash()) {
            t.setLayer(mSurfaceControl, layer);
        }
    }

    @Override
    protected void setRelativeLayer(Transaction t, SurfaceControl relativeTo, int layer) {
        if (!mSurfaceAnimator.hasLeash()) {
            t.setRelativeLayer(mSurfaceControl, relativeTo, layer);
        }
    }

    void logStartActivity(int tag, Task task) {
        final Uri data = intent.getData();
        final String strData = data != null ? data.toSafeString() : null;

        EventLog.writeEvent(tag,
                mUserId, System.identityHashCode(this), task.mTaskId,
                shortComponentName, intent.getAction(),
                intent.getType(), strData, intent.getFlags());
    }

    UriPermissionOwner getUriPermissionsLocked() {
        if (uriPermissions == null) {
            uriPermissions = new UriPermissionOwner(mAtmService.mUgmInternal, this);
        }
        return uriPermissions;
    }

    void addResultLocked(ActivityRecord from, String resultWho,
            int requestCode, int resultCode,
            Intent resultData) {
        ActivityResult r = new ActivityResult(from, resultWho,
                requestCode, resultCode, resultData);
        if (results == null) {
            results = new ArrayList<ResultInfo>();
        }
        results.add(r);
    }

    void removeResultsLocked(ActivityRecord from, String resultWho,
            int requestCode) {
        if (results != null) {
            for (int i=results.size()-1; i>=0; i--) {
                ActivityResult r = (ActivityResult)results.get(i);
                if (r.mFrom != from) continue;
                if (r.mResultWho == null) {
                    if (resultWho != null) continue;
                } else {
                    if (!r.mResultWho.equals(resultWho)) continue;
                }
                if (r.mRequestCode != requestCode) continue;

                results.remove(i);
            }
        }
    }

    void sendResult(int callingUid, String resultWho, int requestCode, int resultCode,
            Intent data, NeededUriGrants dataGrants) {
        if (callingUid > 0) {
            mAtmService.mUgmInternal.grantUriPermissionUncheckedFromIntent(dataGrants,
                    getUriPermissionsLocked());
        }

        if (DEBUG_RESULTS) {
            Slog.v(TAG, "Send activity result to " + this
                    + " : who=" + resultWho + " req=" + requestCode
                    + " res=" + resultCode + " data=" + data);
        }
        if (isState(RESUMED) && attachedToProcess()) {
            try {
                final ArrayList<ResultInfo> list = new ArrayList<ResultInfo>();
                list.add(new ResultInfo(resultWho, requestCode, resultCode, data));
                mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                        ActivityResultItem.obtain(list));
                return;
            } catch (Exception e) {
                Slog.w(TAG, "Exception thrown sending result to " + this, e);
            }
        }

        addResultLocked(null /* from */, resultWho, requestCode, resultCode, data);
    }

    private void addNewIntentLocked(ReferrerIntent intent) {
        if (newIntents == null) {
            newIntents = new ArrayList<>();
        }
        newIntents.add(intent);
    }

    final boolean isSleeping() {
        final Task rootTask = getRootTask();
        return rootTask != null ? rootTask.shouldSleepActivities() : mAtmService.isSleepingLocked();
    }

    /**
     * Deliver a new Intent to an existing activity, so that its onNewIntent()
     * method will be called at the proper time.
     */
    final void deliverNewIntentLocked(int callingUid, Intent intent, NeededUriGrants intentGrants,
            String referrer) {
        // The activity now gets access to the data associated with this Intent.
        mAtmService.mUgmInternal.grantUriPermissionUncheckedFromIntent(intentGrants,
                getUriPermissionsLocked());
        final ReferrerIntent rintent = new ReferrerIntent(intent, referrer);
        boolean unsent = true;
        final boolean isTopActivityWhileSleeping = isTopRunningActivity() && isSleeping();

        // We want to immediately deliver the intent to the activity if:
        // - It is currently resumed or paused. i.e. it is currently visible to the user and we want
        //   the user to see the visual effects caused by the intent delivery now.
        // - The device is sleeping and it is the top activity behind the lock screen (b/6700897).
        if ((mState == RESUMED || mState == PAUSED || isTopActivityWhileSleeping)
                && attachedToProcess()) {
            try {
                ArrayList<ReferrerIntent> ar = new ArrayList<>(1);
                ar.add(rintent);
                // Making sure the client state is RESUMED after transaction completed and doing
                // so only if activity is currently RESUMED. Otherwise, client may have extra
                // life-cycle calls to RESUMED (and PAUSED later).
                mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                        NewIntentItem.obtain(ar, mState == RESUMED));
                unsent = false;
            } catch (RemoteException e) {
                Slog.w(TAG, "Exception thrown sending new intent to " + this, e);
            } catch (NullPointerException e) {
                Slog.w(TAG, "Exception thrown sending new intent to " + this, e);
            }
        }
        if (unsent) {
            addNewIntentLocked(rintent);
        }
    }

    void updateOptionsLocked(ActivityOptions options) {
        if (options != null) {
            if (DEBUG_TRANSITION) Slog.i(TAG, "Update options for " + this);
            if (mPendingOptions != null) {
                mPendingOptions.abort();
            }
            setOptions(options);
        }
    }

    boolean getLaunchedFromBubble() {
        return mLaunchedFromBubble;
    }

    private void setOptions(@NonNull ActivityOptions options) {
        mLaunchedFromBubble = options.getLaunchedFromBubble();
        mPendingOptions = options;
        if (options.getAnimationType() == ANIM_REMOTE_ANIMATION) {
            mPendingRemoteAnimation = options.getRemoteAnimationAdapter();
        }
        mPendingRemoteTransition = options.getRemoteTransition();
    }

    void applyOptionsAnimation() {
        if (DEBUG_TRANSITION) Slog.i(TAG, "Applying options for " + this);
        if (mPendingRemoteAnimation != null) {
            mDisplayContent.mAppTransition.overridePendingAppTransitionRemote(
                    mPendingRemoteAnimation);
        } else {
            if (mPendingOptions == null
                    || mPendingOptions.getAnimationType() == ANIM_SCENE_TRANSITION) {
                // Scene transition will run on the client side.
                return;
            }
            applyOptionsAnimation(mPendingOptions, intent);
        }
        if (task == null) {
            clearOptionsAnimation();
        } else {
            // This will clear the options for all the ActivityRecords for this Task.
            task.forAllActivities((r) -> {
                r.clearOptionsAnimation();
            });
        }
    }

    /**
     * Apply override app transition base on options & animation type.
     */
    private void applyOptionsAnimation(ActivityOptions pendingOptions, Intent intent) {
        final int animationType = pendingOptions.getAnimationType();
        final DisplayContent displayContent = getDisplayContent();
        switch (animationType) {
            case ANIM_CUSTOM:
                displayContent.mAppTransition.overridePendingAppTransition(
                        pendingOptions.getPackageName(),
                        pendingOptions.getCustomEnterResId(),
                        pendingOptions.getCustomExitResId(),
                        pendingOptions.getAnimationStartedListener(),
                        pendingOptions.getAnimationFinishedListener(),
                        pendingOptions.getOverrideTaskTransition());
                break;
            case ANIM_CLIP_REVEAL:
                displayContent.mAppTransition.overridePendingAppTransitionClipReveal(
                        pendingOptions.getStartX(), pendingOptions.getStartY(),
                        pendingOptions.getWidth(), pendingOptions.getHeight());
                if (intent.getSourceBounds() == null) {
                    intent.setSourceBounds(new Rect(pendingOptions.getStartX(),
                            pendingOptions.getStartY(),
                            pendingOptions.getStartX() + pendingOptions.getWidth(),
                            pendingOptions.getStartY() + pendingOptions.getHeight()));
                }
                break;
            case ANIM_SCALE_UP:
                displayContent.mAppTransition.overridePendingAppTransitionScaleUp(
                        pendingOptions.getStartX(), pendingOptions.getStartY(),
                        pendingOptions.getWidth(), pendingOptions.getHeight());
                if (intent.getSourceBounds() == null) {
                    intent.setSourceBounds(new Rect(pendingOptions.getStartX(),
                            pendingOptions.getStartY(),
                            pendingOptions.getStartX() + pendingOptions.getWidth(),
                            pendingOptions.getStartY() + pendingOptions.getHeight()));
                }
                break;
            case ANIM_THUMBNAIL_SCALE_UP:
            case ANIM_THUMBNAIL_SCALE_DOWN:
                final boolean scaleUp = (animationType == ANIM_THUMBNAIL_SCALE_UP);
                final HardwareBuffer buffer = pendingOptions.getThumbnail();
                displayContent.mAppTransition.overridePendingAppTransitionThumb(buffer,
                        pendingOptions.getStartX(), pendingOptions.getStartY(),
                        pendingOptions.getAnimationStartedListener(),
                        scaleUp);
                if (intent.getSourceBounds() == null && buffer != null) {
                    intent.setSourceBounds(new Rect(pendingOptions.getStartX(),
                            pendingOptions.getStartY(),
                            pendingOptions.getStartX() + buffer.getWidth(),
                            pendingOptions.getStartY() + buffer.getHeight()));
                }
                break;
            case ANIM_THUMBNAIL_ASPECT_SCALE_UP:
            case ANIM_THUMBNAIL_ASPECT_SCALE_DOWN:
                final AppTransitionAnimationSpec[] specs = pendingOptions.getAnimSpecs();
                final IAppTransitionAnimationSpecsFuture specsFuture =
                        pendingOptions.getSpecsFuture();
                if (specsFuture != null) {
                    displayContent.mAppTransition.overridePendingAppTransitionMultiThumbFuture(
                            specsFuture, pendingOptions.getAnimationStartedListener(),
                            animationType == ANIM_THUMBNAIL_ASPECT_SCALE_UP);
                } else if (animationType == ANIM_THUMBNAIL_ASPECT_SCALE_DOWN
                        && specs != null) {
                    displayContent.mAppTransition.overridePendingAppTransitionMultiThumb(
                            specs, pendingOptions.getAnimationStartedListener(),
                            pendingOptions.getAnimationFinishedListener(), false);
                } else {
                    displayContent.mAppTransition.overridePendingAppTransitionAspectScaledThumb(
                            pendingOptions.getThumbnail(),
                            pendingOptions.getStartX(), pendingOptions.getStartY(),
                            pendingOptions.getWidth(), pendingOptions.getHeight(),
                            pendingOptions.getAnimationStartedListener(),
                            (animationType == ANIM_THUMBNAIL_ASPECT_SCALE_UP));
                    if (intent.getSourceBounds() == null) {
                        intent.setSourceBounds(new Rect(pendingOptions.getStartX(),
                                pendingOptions.getStartY(),
                                pendingOptions.getStartX() + pendingOptions.getWidth(),
                                pendingOptions.getStartY() + pendingOptions.getHeight()));
                    }
                }
                break;
            case ANIM_OPEN_CROSS_PROFILE_APPS:
                displayContent.mAppTransition
                        .overridePendingAppTransitionStartCrossProfileApps();
                break;
            case ANIM_NONE:
            case ANIM_UNDEFINED:
                break;
            default:
                Slog.e(TAG_WM, "applyOptionsLocked: Unknown animationType=" + animationType);
                break;
        }
    }

    void clearAllDrawn() {
        allDrawn = false;
        mLastAllDrawn = false;
    }

    /**
     * Returns whether the drawn window states of this {@link ActivityRecord} has considered every
     * child {@link WindowState}. A child is considered if it has been passed into
     * {@link #updateDrawnWindowStates(WindowState)} after being added. This is used to determine
     * whether states, such as {@code allDrawn}, can be set, which relies on state variables such as
     * {@code mNumInterestingWindows}, which depend on all {@link WindowState}s being considered.
     *
     * @return {@code true} If all children have been considered, {@code false}.
     */
    private boolean allDrawnStatesConsidered() {
        for (int i = mChildren.size() - 1; i >= 0; --i) {
            final WindowState child = mChildren.get(i);
            if (child.mightAffectAllDrawn() && !child.getDrawnStateEvaluated()) {
                return false;
            }
        }
        return true;
    }

    /**
     *  Determines if the token has finished drawing. This should only be called from
     *  {@link DisplayContent#applySurfaceChangesTransaction}
     */
    void updateAllDrawn() {
        if (!allDrawn) {
            // Number of drawn windows can be less when a window is being relaunched, wait for
            // all windows to be launched and drawn for this token be considered all drawn.
            final int numInteresting = mNumInterestingWindows;

            // We must make sure that all present children have been considered (determined by
            // {@link #allDrawnStatesConsidered}) before evaluating whether everything has been
            // drawn.
            if (numInteresting > 0 && allDrawnStatesConsidered()
                    && mNumDrawnWindows >= numInteresting && !isRelaunching()) {
                if (DEBUG_VISIBILITY) Slog.v(TAG, "allDrawn: " + this
                        + " interesting=" + numInteresting + " drawn=" + mNumDrawnWindows);
                allDrawn = true;
                // Force an additional layout pass where
                // WindowStateAnimator#commitFinishDrawingLocked() will call performShowLocked().
                if (mDisplayContent != null) {
                    mDisplayContent.setLayoutNeeded();
                }
                mWmService.mH.obtainMessage(H.NOTIFY_ACTIVITY_DRAWN, this).sendToTarget();
            }
        }
    }

    void abortAndClearOptionsAnimation() {
        if (mPendingOptions != null) {
            mPendingOptions.abort();
        }
        clearOptionsAnimation();
    }

    void clearOptionsAnimation() {
        mPendingOptions = null;
        mPendingRemoteAnimation = null;
        mPendingRemoteTransition = null;
    }

    ActivityOptions getOptions() {
        return mPendingOptions;
    }

    ActivityOptions takeOptions() {
        if (DEBUG_TRANSITION) Slog.i(TAG, "Taking options for " + this + " callers="
                + Debug.getCallers(6));
        final ActivityOptions opts = mPendingOptions;
        mPendingOptions = null;
        return opts;
    }

    IRemoteTransition takeRemoteTransition() {
        IRemoteTransition out = mPendingRemoteTransition;
        mPendingRemoteTransition = null;
        return out;
    }

    boolean allowMoveToFront() {
        return mPendingOptions == null || !mPendingOptions.getAvoidMoveToFront();
    }

    void removeUriPermissionsLocked() {
        if (uriPermissions != null) {
            uriPermissions.removeUriPermissions();
            uriPermissions = null;
        }
    }

    void pauseKeyDispatchingLocked() {
        if (!keysPaused) {
            keysPaused = true;

            if (getDisplayContent() != null) {
                getDisplayContent().getInputMonitor().pauseDispatchingLw(this);
            }
        }
    }

    void resumeKeyDispatchingLocked() {
        if (keysPaused) {
            keysPaused = false;

            if (getDisplayContent() != null) {
                getDisplayContent().getInputMonitor().resumeDispatchingLw(this);
            }
        }
    }

    private void updateTaskDescription(CharSequence description) {
        task.lastDescription = description;
    }

    void setDeferHidingClient(boolean deferHidingClient) {
        if (mDeferHidingClient == deferHidingClient) {
            return;
        }
        mDeferHidingClient = deferHidingClient;
        if (!mDeferHidingClient && !mVisibleRequested) {
            // Hiding the client is no longer deferred and the app isn't visible still, go ahead and
            // update the visibility.
            setVisibility(false);
        }
    }

    @Override
    boolean isVisible() {
        // If the activity isn't hidden then it is considered visible and there is no need to check
        // its children windows to see if they are visible.
        return mVisible;
    }

    @Override
    boolean isVisibleRequested() {
        return mVisibleRequested;
    }

    void setVisible(boolean visible) {
        if (visible != mVisible) {
            mVisible = visible;
            if (app != null) {
                mTaskSupervisor.onProcessActivityStateChanged(app, false /* forceBatch */);
            }
            scheduleAnimation();
        }
    }

    /**
     * This is the only place that writes {@link #mVisibleRequested} (except unit test). The caller
     * outside of this class should use {@link #setVisibility}.
     */
    private void setVisibleRequested(boolean visible) {
        if (visible == mVisibleRequested) {
            return;
        }
        mVisibleRequested = visible;
        setInsetsFrozen(!visible);
        if (app != null) {
            mTaskSupervisor.onProcessActivityStateChanged(app, false /* forceBatch */);
        }
    }

    /**
     * Set visibility on this {@link ActivityRecord}
     *
     * <p class="note"><strong>Note: </strong>This function might not update the visibility of
     * this {@link ActivityRecord} immediately. In case we are preparing an app transition, we
     * delay changing the visibility of this {@link ActivityRecord} until we execute that
     * transition.</p>
     *
     * @param visible {@code true} if the {@link ActivityRecord} should become visible, otherwise
     *                this should become invisible.
     */
    void setVisibility(boolean visible) {
        if (getParent() == null) {
            Slog.w(TAG_WM, "Attempted to set visibility of non-existing app token: "
                    + appToken);
            return;
        }
        if (visible) {
            mDeferHidingClient = false;
        }
        setVisibility(visible, mDeferHidingClient);
        mAtmService.addWindowLayoutReasons(
                ActivityTaskManagerService.LAYOUT_REASON_VISIBILITY_CHANGED);
        mTaskSupervisor.getActivityMetricsLogger().notifyVisibilityChanged(this);
        mTaskSupervisor.mAppVisibilitiesChangedSinceLastPause = true;
    }

    @VisibleForTesting
    void setVisibility(boolean visible, boolean deferHidingClient) {
        final AppTransition appTransition = getDisplayContent().mAppTransition;

        // Don't set visibility to false if we were already not visible. This prevents WM from
        // adding the app to the closing app list which doesn't make sense for something that is
        // already not visible. However, set visibility to true even if we are already visible.
        // This makes sure the app is added to the opening apps list so that the right
        // transition can be selected.
        // TODO: Probably a good idea to separate the concept of opening/closing apps from the
        // concept of setting visibility...
        if (!visible && !mVisibleRequested) {

            if (!deferHidingClient && mLastDeferHidingClient) {
                // We previously deferred telling the client to hide itself when visibility was
                // initially set to false. Now we would like it to hide, so go ahead and set it.
                mLastDeferHidingClient = deferHidingClient;
                setClientVisible(false);
            }
            return;
        }

        ProtoLog.v(WM_DEBUG_APP_TRANSITIONS,
                "setAppVisibility(%s, visible=%b): %s visible=%b mVisibleRequested=%b Callers=%s",
                appToken, visible, appTransition, isVisible(), mVisibleRequested,
                Debug.getCallers(6));

        // Before setting mVisibleRequested so we can track changes.
        mAtmService.getTransitionController().collect(this);

        onChildVisibilityRequested(visible);

        final DisplayContent displayContent = getDisplayContent();
        displayContent.mOpeningApps.remove(this);
        displayContent.mClosingApps.remove(this);
        waitingToShow = false;
        setVisibleRequested(visible);
        mLastDeferHidingClient = deferHidingClient;

        if (!visible) {
            // If the app is dead while it was visible, we kept its dead window on screen.
            // Now that the app is going invisible, we can remove it. It will be restarted
            // if made visible again.
            removeDeadWindows();
            // If this activity is about to finish/stopped and now becomes invisible, remove it
            // from the unknownApp list in case the activity does not want to draw anything, which
            // keep the user waiting for the next transition to start.
            if (finishing || isState(STOPPED)) {
                displayContent.mUnknownAppVisibilityController.appRemovedOrHidden(this);
            }
        } else {
            if (!appTransition.isTransitionSet()
                    && appTransition.isReady()) {
                // Add the app mOpeningApps if transition is unset but ready. This means
                // we're doing a screen freeze, and the unfreeze will wait for all opening
                // apps to be ready.
                displayContent.mOpeningApps.add(this);
            }
            startingMoved = false;
            // If the token is currently hidden (should be the common case), or has been
            // stopped, then we need to set up to wait for its windows to be ready.
            if (!isVisible() || mAppStopped) {
                clearAllDrawn();

                // If the app was already visible, don't reset the waitingToShow state.
                if (!isVisible()) {
                    waitingToShow = true;

                    // If the client isn't hidden, we don't need to reset the drawing state.
                    if (!isClientVisible()) {
                        // Let's reset the draw state in order to prevent the starting window to be
                        // immediately dismissed when the app still has the surface.
                        forAllWindows(w -> {
                            if (w.mWinAnimator.mDrawState == HAS_DRAWN) {
                                w.mWinAnimator.resetDrawState();

                                // Force add to mResizingWindows, so that we are guaranteed to get
                                // another reportDrawn callback.
                                w.forceReportingResized();
                            }
                        }, true /* traverseTopToBottom */);
                    }
                }
            }

            // In the case where we are making an app visible but holding off for a transition,
            // we still need to tell the client to make its windows visible so they get drawn.
            // Otherwise, we will wait on performing the transition until all windows have been
            // drawn, they never will be, and we are sad.
            setClientVisible(true);

            requestUpdateWallpaperIfNeeded();

            ProtoLog.v(WM_DEBUG_ADD_REMOVE, "No longer Stopped: %s", this);
            mAppStopped = false;

            transferStartingWindowFromHiddenAboveTokenIfNeeded();
        }

        // If in a transition, defer commits for activities that are going invisible
        if (!visible && mAtmService.getTransitionController().inTransition()) {
            return;
        }
        // If we are preparing an app transition, then delay changing
        // the visibility of this token until we execute that transition.
        // Note that we ignore display frozen since we want the opening / closing transition type
        // can be updated correctly even display frozen, and it's safe since in applyAnimation will
        // still check DC#okToAnimate again if the transition animation is fine to apply.
        // TODO(new-app-transition): Rewrite this logic using WM Shell.
        final boolean recentsAnimating = isAnimating(PARENTS, ANIMATION_TYPE_RECENTS);
        if (okToAnimate(true /* ignoreFrozen */, canTurnScreenOn())
                && (appTransition.isTransitionSet()
                || (recentsAnimating && !isActivityTypeHome()))) {
            if (visible) {
                displayContent.mOpeningApps.add(this);
                mEnteringAnimation = true;
            } else if (mVisible) {
                displayContent.mClosingApps.add(this);
                mEnteringAnimation = false;
            }
            if ((appTransition.getTransitFlags() & TRANSIT_FLAG_OPEN_BEHIND) != 0) {
                // We're launchingBehind, add the launching activity to mOpeningApps.
                final WindowState win = getDisplayContent().findFocusedWindow();
                if (win != null) {
                    final ActivityRecord focusedActivity = win.mActivityRecord;
                    if (focusedActivity != null) {
                        ProtoLog.d(WM_DEBUG_APP_TRANSITIONS,
                                "TRANSIT_FLAG_OPEN_BEHIND,  adding %s to mOpeningApps",
                                focusedActivity);

                        // Force animation to be loaded.
                        displayContent.mOpeningApps.add(focusedActivity);
                    }
                }
            }
            return;
        }

        commitVisibility(visible, true /* performLayout */);
        updateReportedVisibilityLocked();
    }

    @Override
    boolean applyAnimation(LayoutParams lp, @TransitionOldType int transit, boolean enter,
            boolean isVoiceInteraction, @Nullable ArrayList<WindowContainer> sources) {
        if (mUseTransferredAnimation) {
            return false;
        }
        // If it was set to true, reset the last request to force the transition.
        mRequestForceTransition = false;
        return super.applyAnimation(lp, transit, enter, isVoiceInteraction, sources);
    }

    /**
     * Update visibility to this {@link ActivityRecord}.
     *
     * <p class="note"><strong>Note: </strong> Unlike {@link #setVisibility}, this immediately
     * updates the visibility without starting an app transition. Since this function may start
     * animation on {@link WindowState} depending on app transition animation status, an app
     * transition animation must be started before calling this function if necessary.</p>
     *
     * @param visible {@code true} if this {@link ActivityRecord} should become visible, otherwise
     *                this should become invisible.
     * @param performLayout if {@code true}, perform surface placement after committing visibility.
     */
    void commitVisibility(boolean visible, boolean performLayout) {
        // Reset the state of mVisibleSetFromTransferredStartingWindow since visibility is actually
        // been set by the app now.
        mVisibleSetFromTransferredStartingWindow = false;
        if (visible == isVisible()) {
            return;
        }

        final int windowsCount = mChildren.size();
        for (int i = 0; i < windowsCount; i++) {
            mChildren.get(i).onAppVisibilityChanged(visible, isAnimating(PARENTS,
                    ANIMATION_TYPE_APP_TRANSITION));
        }
        setVisible(visible);
        setVisibleRequested(visible);
        if (!visible) {
            stopFreezingScreen(true, true);
        } else {
            // If we are being set visible, and the starting window is not yet displayed,
            // then make sure it doesn't get displayed.
            if (mStartingWindow != null && !mStartingWindow.isDrawn()) {
                mStartingWindow.clearPolicyVisibilityFlag(LEGACY_POLICY_VISIBILITY);
                mStartingWindow.mLegacyPolicyVisibilityAfterAnim = false;
            }
            // We are becoming visible, so better freeze the screen with the windows that are
            // getting visible so we also wait for them.
            forAllWindows(mWmService::makeWindowFreezingScreenIfNeededLocked, true);
        }
        ProtoLog.v(WM_DEBUG_APP_TRANSITIONS,
                "commitVisibility: %s: visible=%b mVisibleRequested=%b", this,
                isVisible(), mVisibleRequested);
        final DisplayContent displayContent = getDisplayContent();
        displayContent.getInputMonitor().setUpdateInputWindowsNeededLw();
        if (performLayout) {
            mWmService.updateFocusedWindowLocked(UPDATE_FOCUS_WILL_PLACE_SURFACES,
                    false /*updateInputWindows*/);
            mWmService.mWindowPlacerLocked.performSurfacePlacement();
        }
        displayContent.getInputMonitor().updateInputWindowsLw(false /*force*/);
        mUseTransferredAnimation = false;

        postApplyAnimation(visible);
    }

    /**
     * Post process after applying an app transition animation.
     *
     * <p class="note"><strong>Note: </strong> This function must be called after the animations
     * have been applied and {@link #commitVisibility}.</p>
     *
     * @param visible {@code true} if this {@link ActivityRecord} has become visible, otherwise
     *                this has become invisible.
     */
    private void postApplyAnimation(boolean visible) {
        final boolean delayed = isAnimating(PARENTS | CHILDREN,
                ANIMATION_TYPE_APP_TRANSITION | ANIMATION_TYPE_WINDOW_ANIMATION
                        | ANIMATION_TYPE_RECENTS);
        if (!delayed) {
            // We aren't delayed anything, but exiting windows rely on the animation finished
            // callback being called in case the ActivityRecord was pretending to be delayed,
            // which we might have done because we were in closing/opening apps list.
            onAnimationFinished(ANIMATION_TYPE_APP_TRANSITION, null /* AnimationAdapter */);
            if (visible) {
                // The token was made immediately visible, there will be no entrance animation.
                // We need to inform the client the enter animation was finished.
                mEnteringAnimation = true;
                mWmService.mActivityManagerAppTransitionNotifier.onAppTransitionFinishedLocked(
                        token);
            }
        }

        // If we're becoming visible, immediately change client visibility as well. there seem
        // to be some edge cases where we change our visibility but client visibility never gets
        // updated.
        // If we're becoming invisible, update the client visibility if we are not running an
        // animation. Otherwise, we'll update client visibility in onAnimationFinished.
        if (visible || !isAnimating(PARENTS,
                ANIMATION_TYPE_APP_TRANSITION | ANIMATION_TYPE_RECENTS)) {
            setClientVisible(visible);
        }

        if (!visible) {
            final InsetsControlTarget imeInputTarget = mDisplayContent.getImeTarget(
                    DisplayContent.IME_TARGET_INPUT);
            mLastImeShown = imeInputTarget != null && imeInputTarget.getWindow() != null
                    && imeInputTarget.getWindow().mActivityRecord == this
                    && mDisplayContent.mInputMethodWindow != null
                    && mDisplayContent.mInputMethodWindow.isVisible();
            mImeInsetsFrozenUntilStartInput = true;
        }

        final DisplayContent displayContent = getDisplayContent();
        if (!displayContent.mClosingApps.contains(this)
                && !displayContent.mOpeningApps.contains(this)) {
            // Take the screenshot before possibly hiding the WSA, otherwise the screenshot
            // will not be taken.
            mWmService.mTaskSnapshotController.notifyAppVisibilityChanged(this, visible);
        }

        // If we are hidden but there is no delay needed we immediately
        // apply the Surface transaction so that the ActivityManager
        // can have some guarantee on the Surface state following
        // setting the visibility. This captures cases like dismissing
        // the docked or root pinned task where there is no app transition.
        //
        // In the case of a "Null" animation, there will be
        // no animation but there will still be a transition set.
        // We still need to delay hiding the surface such that it
        // can be synchronized with showing the next surface in the transition.
        if (!isVisible() && !delayed && !displayContent.mAppTransition.isTransitionSet()) {
            SurfaceControl.openTransaction();
            try {
                forAllWindows(win -> {
                    win.mWinAnimator.hide(getGlobalTransaction(), "immediately hidden");
                }, true);
            } finally {
                SurfaceControl.closeTransaction();
            }
        }
    }

    /**
     * Check if visibility of this {@link ActivityRecord} should be updated as part of an app
     * transition.
     *
     * <p class="note><strong>Note:</strong> If the visibility of this {@link ActivityRecord} is
     * already set to {@link #mVisible}, we don't need to update the visibility. So {@code false} is
     * returned.</p>
     *
     * @param visible {@code true} if this {@link ActivityRecord} should become visible,
     *                {@code false} if this should become invisible.
     * @return {@code true} if visibility of this {@link ActivityRecord} should be updated, and
     *         an app transition animation should be run.
     */
    boolean shouldApplyAnimation(boolean visible) {
        // Allow for state update and animation to be applied if:
        // * activity is transitioning visibility state
        // * or the activity was marked as hidden and is exiting before we had a chance to play the
        // transition animation
        // * or this is an opening app and windows are being replaced (e.g. freeform window to
        //   normal window).
        return isVisible() != visible || mRequestForceTransition || (!isVisible() && mIsExiting)
                || (visible && forAllWindows(WindowState::waitingForReplacement, true));
    }

    /**
     * See {@link Activity#setDisablePreviewScreenshots}.
     */
    void setDisablePreviewScreenshots(boolean disable) {
        mDisablePreviewScreenshots = disable;
    }

    /**
     * Retrieves whether we'd like to generate a snapshot that's based solely on the theme. This is
     * the case when preview screenshots are disabled {@link #setDisablePreviewScreenshots} or when
     * we can't take a snapshot for other reasons, for example, if we have a secure window.
     *
     * @return True if we need to generate an app theme snapshot, false if we'd like to take a real
     *         screenshot.
     */
    boolean shouldUseAppThemeSnapshot() {
        return mDisablePreviewScreenshots || forAllWindows(WindowState::isSecureLocked,
                true /* topToBottom */);
    }

    /**
     * Sets whether the current launch can turn the screen on.
     * @see #currentLaunchCanTurnScreenOn()
     */
    void setCurrentLaunchCanTurnScreenOn(boolean currentLaunchCanTurnScreenOn) {
        mCurrentLaunchCanTurnScreenOn = currentLaunchCanTurnScreenOn;
    }

    /**
     * Indicates whether the current launch can turn the screen on. This is to prevent multiple
     * relayouts from turning the screen back on. The screen should only turn on at most
     * once per activity resume.
     * <p>
     * Note this flag is only meaningful when {@link WindowManager.LayoutParams#FLAG_TURN_SCREEN_ON}
     * or {@link ActivityRecord#canTurnScreenOn} is set.
     *
     * @return {@code true} if the activity is ready to turn on the screen.
     */
    boolean currentLaunchCanTurnScreenOn() {
        return mCurrentLaunchCanTurnScreenOn;
    }

    void setState(ActivityState state, String reason) {
        ProtoLog.v(WM_DEBUG_STATES, "State movement: %s from:%s to:%s reason:%s",
                this, getState(), state, reason);

        if (state == mState) {
            // No need to do anything if state doesn't change.
            ProtoLog.v(WM_DEBUG_STATES, "State unchanged from:%s", state);
            return;
        }

        mState = state;

        if (task != null) {
            task.onActivityStateChanged(this, state, reason);
        }

        // The WindowManager interprets the app stopping signal as
        // an indication that the Surface will eventually be destroyed.
        // This however isn't necessarily true if we are going to sleep.
        if (state == STOPPING && !isSleeping()) {
            if (getParent() == null) {
                Slog.w(TAG_WM, "Attempted to notify stopping on non-existing app token: "
                        + appToken);
                return;
            }
        }
        if (app != null) {
            mTaskSupervisor.onProcessActivityStateChanged(app, false /* forceBatch */);
        }

        switch (state) {
            case RESUMED:
                mAtmService.updateBatteryStats(this, true);
                mAtmService.updateActivityUsageStats(this, Event.ACTIVITY_RESUMED);
                // Fall through.
            case STARTED:
                // Update process info while making an activity from invisible to visible, to make
                // sure the process state is updated to foreground.
                if (app != null) {
                    app.updateProcessInfo(false /* updateServiceConnectionActivities */,
                            true /* activityChange */, true /* updateOomAdj */,
                            true /* addPendingTopUid */);
                }
                final ContentCaptureManagerInternal contentCaptureService =
                        LocalServices.getService(ContentCaptureManagerInternal.class);
                if (contentCaptureService != null) {
                    contentCaptureService.notifyActivityEvent(mUserId, mActivityComponent,
                            ActivityEvent.TYPE_ACTIVITY_STARTED);
                }
                break;
            case PAUSED:
                mAtmService.updateBatteryStats(this, false);
                mAtmService.updateActivityUsageStats(this, Event.ACTIVITY_PAUSED);
                break;
            case STOPPED:
                mAtmService.updateActivityUsageStats(this, Event.ACTIVITY_STOPPED);
                break;
            case DESTROYED:
                mAtmService.updateActivityUsageStats(this, Event.ACTIVITY_DESTROYED);
                // Fall through.
            case DESTROYING:
                if (app != null && !app.hasActivities()) {
                    // Update any services we are bound to that might care about whether
                    // their client may have activities.
                    // No longer have activities, so update LRU list and oom adj.
                    app.updateProcessInfo(true /* updateServiceConnectionActivities */,
                            false /* activityChange */, true /* updateOomAdj */,
                            false /* addPendingTopUid */);
                }
                break;
        }
    }

    ActivityState getState() {
        return mState;
    }

    /**
     * Returns {@code true} if the Activity is in the specified state.
     */
    boolean isState(ActivityState state) {
        return state == mState;
    }

    /**
     * Returns {@code true} if the Activity is in one of the specified states.
     */
    boolean isState(ActivityState state1, ActivityState state2) {
        return state1 == mState || state2 == mState;
    }

    /**
     * Returns {@code true} if the Activity is in one of the specified states.
     */
    boolean isState(ActivityState state1, ActivityState state2, ActivityState state3) {
        return state1 == mState || state2 == mState || state3 == mState;
    }

    /**
     * Returns {@code true} if the Activity is in one of the specified states.
     */
    boolean isState(ActivityState state1, ActivityState state2, ActivityState state3,
            ActivityState state4) {
        return state1 == mState || state2 == mState || state3 == mState || state4 == mState;
    }

    /**
     * Returns {@code true} if the Activity is in one of the specified states.
     */
    boolean isState(ActivityState state1, ActivityState state2, ActivityState state3,
            ActivityState state4, ActivityState state5) {
        return state1 == mState || state2 == mState || state3 == mState || state4 == mState
                || state5 == mState;
    }

    /**
     * Returns {@code true} if the Activity is in one of the specified states.
     */
    boolean isState(ActivityState state1, ActivityState state2, ActivityState state3,
            ActivityState state4, ActivityState state5, ActivityState state6) {
        return state1 == mState || state2 == mState || state3 == mState || state4 == mState
                || state5 == mState || state6 == mState;
    }

    void destroySurfaces() {
        destroySurfaces(false /*cleanupOnResume*/);
    }

    /**
     * Destroy surfaces which have been marked as eligible by the animator, taking care to ensure
     * the client has finished with them.
     *
     * @param cleanupOnResume whether this is done when app is resumed without fully stopped. If
     * set to true, destroy only surfaces of removed windows, and clear relevant flags of the
     * others so that they are ready to be reused. If set to false (common case), destroy all
     * surfaces that's eligible, if the app is already stopped.
     */
    private void destroySurfaces(boolean cleanupOnResume) {
        boolean destroyedSomething = false;

        // Copying to a different list as multiple children can be removed.
        final ArrayList<WindowState> children = new ArrayList<>(mChildren);
        for (int i = children.size() - 1; i >= 0; i--) {
            final WindowState win = children.get(i);
            destroyedSomething |= win.destroySurface(cleanupOnResume, mAppStopped);
        }
        if (destroyedSomething) {
            final DisplayContent dc = getDisplayContent();
            dc.assignWindowLayers(true /*setLayoutNeeded*/);
            updateLetterboxSurface(null);
        }
    }

    void notifyAppResumed(boolean wasStopped) {
        if (getParent() == null) {
            Slog.w(TAG_WM, "Attempted to notify resumed of non-existing app token: "
                    + appToken);
            return;
        }
        ProtoLog.v(WM_DEBUG_ADD_REMOVE, "notifyAppResumed: wasStopped=%b %s",
                wasStopped, this);
        mAppStopped = false;
        // Allow the window to turn the screen on once the app is resumed again.
        setCurrentLaunchCanTurnScreenOn(true);
        if (!wasStopped) {
            destroySurfaces(true /*cleanupOnResume*/);
        }
    }

    /**
     * Notify that the app has stopped, and it is okay to destroy any surfaces which were
     * keeping alive in case they were still being used.
     */
    void notifyAppStopped() {
        ProtoLog.v(WM_DEBUG_ADD_REMOVE, "notifyAppStopped: %s", this);
        mAppStopped = true;
        // This is to fix the edge case that auto-enter-pip is finished in Launcher but app calls
        // setAutoEnterEnabled(false) and transitions to STOPPED state, see b/191930787.
        // Clear any surface transactions and content overlay in this case.
        if (task != null && task.mLastRecentsAnimationTransaction != null) {
            task.clearLastRecentsAnimationTransaction(true /* forceRemoveOverlay */);
        }
        // Reset the last saved PiP snap fraction on app stop.
        mDisplayContent.mPinnedTaskController.onActivityHidden(mActivityComponent);
        mDisplayContent.mUnknownAppVisibilityController.appRemovedOrHidden(this);
        if (isClientVisible()) {
            // Though this is usually unlikely to happen, still make sure the client is invisible.
            setClientVisible(false);
        }
        destroySurfaces();
        // Remove any starting window that was added for this app if they are still around.
        removeStartingWindow();
    }

    /**
     * Suppress transition until the new activity becomes ready, otherwise the keyguard can appear
     * for a short amount of time before the new process with the new activity had the ability to
     * set its showWhenLocked flags.
     */
    void notifyUnknownVisibilityLaunchedForKeyguardTransition() {
        // No display activities never add a window, so there is no point in waiting them for
        // relayout.
        if (noDisplay || !mTaskSupervisor.getKeyguardController().isKeyguardLocked()) {
            return;
        }

        mDisplayContent.mUnknownAppVisibilityController.notifyLaunched(this);
    }

    /** @return {@code true} if this activity should be made visible. */
    private boolean shouldBeVisible(boolean behindFullscreenActivity, boolean ignoringKeyguard) {
        updateVisibilityIgnoringKeyguard(behindFullscreenActivity);

        if (ignoringKeyguard) {
            return visibleIgnoringKeyguard;
        }

        return shouldBeVisibleUnchecked();
    }

    boolean shouldBeVisibleUnchecked() {
        final Task rootTask = getRootTask();
        if (rootTask == null || !visibleIgnoringKeyguard) {
            return false;
        }

        // Activity in a root pinned task should not be visible if the root task is in force
        // hidden state.
        // Typically due to the FLAG_FORCE_HIDDEN_FOR_PINNED_TASK set on the root task, which is a
        // work around to send onStop before windowing mode change callbacks.
        // See also ActivityTaskSupervisor#removePinnedRootTaskInSurfaceTransaction
        // TODO: Should we ever be visible if the rootTask/task is invisible?
        if (inPinnedWindowingMode() && rootTask.isForceHidden()) {
            return false;
        }

        // Check if the activity is on a sleeping display, canTurnScreenOn will also check
        // keyguard visibility
        if (mDisplayContent.isSleeping()) {
            return canTurnScreenOn();
        } else {
            return mTaskSupervisor.getKeyguardController().checkKeyguardVisibility(this);
        }
    }

    void updateVisibilityIgnoringKeyguard(boolean behindFullscreenActivity) {
        visibleIgnoringKeyguard = (!behindFullscreenActivity || mLaunchTaskBehind)
                && okToShowLocked();
    }

    boolean shouldBeVisible() {
        final Task rootTask = getRootTask();
        if (rootTask == null) {
            return false;
        }

        final boolean behindFullscreenActivity = !rootTask.shouldBeVisible(null /* starting */)
                || rootTask.getOccludingActivityAbove(this) != null;
        return shouldBeVisible(behindFullscreenActivity, false /* ignoringKeyguard */);
    }

    void makeVisibleIfNeeded(ActivityRecord starting, boolean reportToClient) {
        // This activity is not currently visible, but is running. Tell it to become visible.
        if ((mState == RESUMED && mVisibleRequested) || this == starting) {
            if (DEBUG_VISIBILITY) Slog.d(TAG_VISIBILITY,
                    "Not making visible, r=" + this + " state=" + mState + " starting=" + starting);
            return;
        }

        // If this activity is paused, tell it to now show its window.
        if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY,
                "Making visible and scheduling visibility: " + this);
        final Task rootTask = getRootTask();
        try {
            if (rootTask.mTranslucentActivityWaiting != null) {
                updateOptionsLocked(returningOptions);
                rootTask.mUndrawnActivitiesBelowTopTranslucent.add(this);
            }
            setVisibility(true);
            app.postPendingUiCleanMsg(true);
            if (reportToClient) {
                mClientVisibilityDeferred = false;
                makeActiveIfNeeded(starting);
            } else {
                mClientVisibilityDeferred = true;
            }
            // The activity may be waiting for stop, but that is no longer appropriate for it.
            mTaskSupervisor.mStoppingActivities.remove(this);
        } catch (Exception e) {
            // Just skip on any failure; we'll make it visible when it next restarts.
            Slog.w(TAG, "Exception thrown making visible: " + intent.getComponent(), e);
        }
        handleAlreadyVisible();
    }

    void makeInvisible() {
        if (!mVisibleRequested) {
            if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Already invisible: " + this);
            return;
        }
        // Now for any activities that aren't visible to the user, make sure they no longer are
        // keeping the screen frozen.
        if (DEBUG_VISIBILITY) {
            Slog.v(TAG_VISIBILITY, "Making invisible: " + this + ", state=" + getState());
        }
        try {
            final boolean canEnterPictureInPicture = checkEnterPictureInPictureState(
                    "makeInvisible", true /* beforeStopping */);
            // Defer telling the client it is hidden if it can enter Pip and isn't current paused,
            // stopped or stopping. This gives it a chance to enter Pip in onPause().
            // TODO: There is still a question surrounding activities in multi-window mode that want
            // to enter Pip after they are paused, but are still visible. I they should be okay to
            // enter Pip in those cases, but not "auto-Pip" which is what this condition covers and
            // the current contract for "auto-Pip" is that the app should enter it before onPause
            // returns. Just need to confirm this reasoning makes sense.
            final boolean deferHidingClient = canEnterPictureInPicture
                    && !isState(STARTED, STOPPING, STOPPED, PAUSED);
            if (deferHidingClient && pictureInPictureArgs.isAutoEnterEnabled()) {
                // Go ahead and just put the activity in pip if it supports auto-pip.
                mAtmService.enterPictureInPictureMode(this, pictureInPictureArgs);
                return;
            }
            setDeferHidingClient(deferHidingClient);
            setVisibility(false);

            switch (getState()) {
                case STOPPING:
                case STOPPED:
                    // Reset the flag indicating that an app can enter picture-in-picture once the
                    // activity is hidden
                    supportsEnterPipOnTaskSwitch = false;
                    break;
                case RESUMED:
                    // If the app is capable of entering PIP, we should try pausing it now
                    // so it can PIP correctly.
                    if (deferHidingClient) {
                        task.startPausingLocked(false /* uiSleeping */,
                                null /* resuming */, "makeInvisible");
                        break;
                    }
                case INITIALIZING:
                case PAUSING:
                case PAUSED:
                case STARTED:
                    addToStopping(true /* scheduleIdle */,
                            canEnterPictureInPicture /* idleDelayed */, "makeInvisible");
                    break;

                default:
                    break;
            }
        } catch (Exception e) {
            // Just skip on any failure; we'll make it visible when it next restarts.
            Slog.w(TAG, "Exception thrown making hidden: " + intent.getComponent(), e);
        }
    }

    /**
     * Make activity resumed or paused if needed.
     * @param activeActivity an activity that is resumed or just completed pause action.
     *                       We won't change the state of this activity.
     */
    boolean makeActiveIfNeeded(ActivityRecord activeActivity) {
        if (shouldResumeActivity(activeActivity)) {
            if (DEBUG_VISIBILITY) {
                Slog.v(TAG_VISIBILITY, "Resume visible activity, " + this);
            }
            return getRootTask().resumeTopActivityUncheckedLocked(activeActivity /* prev */,
                    null /* options */);
        } else if (shouldPauseActivity(activeActivity)) {
            if (DEBUG_VISIBILITY) {
                Slog.v(TAG_VISIBILITY, "Pause visible activity, " + this);
            }
            // An activity must be in the {@link PAUSING} state for the system to validate
            // the move to {@link PAUSED}.
            setState(PAUSING, "makeActiveIfNeeded");
            try {
                mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                        PauseActivityItem.obtain(finishing, false /* userLeaving */,
                                configChangeFlags, false /* dontReport */));
            } catch (Exception e) {
                Slog.w(TAG, "Exception thrown sending pause: " + intent.getComponent(), e);
            }
        } else if (shouldStartActivity()) {
            if (DEBUG_VISIBILITY) {
                Slog.v(TAG_VISIBILITY, "Start visible activity, " + this);
            }
            setState(STARTED, "makeActiveIfNeeded");

            try {
                mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                        StartActivityItem.obtain(takeOptions()));
            } catch (Exception e) {
                Slog.w(TAG, "Exception thrown sending start: " + intent.getComponent(), e);
            }
            // The activity may be waiting for stop, but that is no longer appropriate if we are
            // starting the activity again
            mTaskSupervisor.mStoppingActivities.remove(this);
        }
        return false;
    }

    /**
     * Check if activity should be moved to PAUSED state. The activity:
     * - should be eligible to be made active (see {@link #shouldMakeActive(ActivityRecord)})
     * - should be non-focusable
     * - should not be currently pausing or paused
     * @param activeActivity the activity that is active or just completed pause action. We won't
     *                       resume if this activity is active.
     */
    @VisibleForTesting
    boolean shouldPauseActivity(ActivityRecord activeActivity) {
        return shouldMakeActive(activeActivity) && !isFocusable() && !isState(PAUSING, PAUSED)
                // We will only allow pausing if results is null, otherwise it will cause this
                // activity to resume before getting result
                && (results == null);
    }

    /**
     * Check if activity should be moved to RESUMED state.
     * See {@link #shouldBeResumed(ActivityRecord)}
     * @param activeActivity the activity that is active or just completed pause action. We won't
     *                       resume if this activity is active.
     */
    @VisibleForTesting
    boolean shouldResumeActivity(ActivityRecord activeActivity) {
        return shouldBeResumed(activeActivity) && !isState(RESUMED);
    }

    /**
     * Check if activity should be RESUMED now. The activity:
     * - should be eligible to be made active (see {@link #shouldMakeActive(ActivityRecord)})
     * - should be focusable
     */
    private boolean shouldBeResumed(ActivityRecord activeActivity) {
        return shouldMakeActive(activeActivity) && isFocusable()
                && getTask().getVisibility(activeActivity) == TASK_VISIBILITY_VISIBLE
                && canResumeByCompat();
    }

    /**
     * Check if activity should be moved to STARTED state.
     * NOTE: This will not check if activity should be made paused or resumed first, so it must only
     * be called after checking with {@link #shouldResumeActivity(ActivityRecord)}
     * and {@link #shouldPauseActivity(ActivityRecord)}.
     */
    private boolean shouldStartActivity() {
        return mVisibleRequested && (isState(STOPPED) || isState(STOPPING));
    }

    /**
     * Check if activity is eligible to be made active (resumed of paused). The activity:
     * - should be paused, stopped or stopping
     * - should not be the currently active one or launching behind other tasks
     * - should be either the topmost in task, or right below the top activity that is finishing
     * If all of these conditions are not met at the same time, the activity cannot be made active.
     */
    @VisibleForTesting
    boolean shouldMakeActive(ActivityRecord activeActivity) {
        // If the activity is stopped, stopping, cycle to an active state. We avoid doing
        // this when there is an activity waiting to become translucent as the extra binder
        // calls will lead to noticeable jank. A later call to
        // Task#ensureActivitiesVisible will bring the activity to a proper
        // active state.
        if (!isState(STARTED, RESUMED, PAUSED, STOPPED, STOPPING)
                // TODO (b/185876784) Check could we remove the check condition
                //  mTranslucentActivityWaiting != null here
                || getRootTask().mTranslucentActivityWaiting != null) {
            return false;
        }

        if (this == activeActivity) {
            return false;
        }

        if (!mTaskSupervisor.readyToResume()) {
            // Making active is currently deferred (e.g. because an activity launch is in progress).
            return false;
        }

        if (this.mLaunchTaskBehind) {
            // This activity is being launched from behind, which means that it's not intended to be
            // presented to user right now, even if it's set to be visible.
            return false;
        }

        // Check if position in task allows to become paused
        if (!task.hasChild(this)) {
            throw new IllegalStateException("Activity not found in its task");
        }
        return task.topRunningActivity() == this;
    }

    void handleAlreadyVisible() {
        stopFreezingScreenLocked(false);
        try {
            if (returningOptions != null) {
                app.getThread().scheduleOnNewActivityOptions(appToken, returningOptions.toBundle());
            }
        } catch(RemoteException e) {
        }
    }

    static void activityResumedLocked(IBinder token, boolean handleSplashScreenExit) {
        final ActivityRecord r = ActivityRecord.forTokenLocked(token);
        ProtoLog.i(WM_DEBUG_STATES, "Resumed activity; dropping state of: %s", r);
        if (r == null) {
            // If an app reports resumed after a long delay, the record on server side might have
            // been removed (e.g. destroy timeout), so the token could be null.
            return;
        }
        r.setCustomizeSplashScreenExitAnimation(handleSplashScreenExit);
        r.setSavedState(null /* savedState */);

        r.mDisplayContent.handleActivitySizeCompatModeIfNeeded(r);
        r.mDisplayContent.mUnknownAppVisibilityController.notifyAppResumedFinished(r);
    }

    static void splashScreenAttachedLocked(IBinder token) {
        final ActivityRecord r = ActivityRecord.forTokenLocked(token);
        if (r == null) {
            Slog.w(TAG, "splashScreenTransferredLocked cannot find activity");
            return;
        }
        r.onSplashScreenAttachComplete();
    }

    /**
     * Once we know that we have asked an application to put an activity in the resumed state
     * (either by launching it or explicitly telling it), this function updates the rest of our
     * state to match that fact.
     */
    void completeResumeLocked() {
        final boolean wasVisible = mVisibleRequested;
        setVisibility(true);
        if (!wasVisible) {
            // Visibility has changed, so take a note of it so we call the TaskStackChangedListener
            mTaskSupervisor.mAppVisibilitiesChangedSinceLastPause = true;
        }
        idle = false;
        results = null;
        if (newIntents != null && newIntents.size() > 0) {
            mLastNewIntent = newIntents.get(newIntents.size() - 1);
        }
        newIntents = null;
        stopped = false;

        if (isActivityTypeHome()) {
            mTaskSupervisor.updateHomeProcess(task.getBottomMostActivity().app);
        }

        if (nowVisible) {
            mTaskSupervisor.stopWaitingForActivityVisible(this);
        }

        // Schedule an idle timeout in case the app doesn't do it for us.
        mTaskSupervisor.scheduleIdleTimeout(this);

        mTaskSupervisor.reportResumedActivityLocked(this);

        resumeKeyDispatchingLocked();
        final Task rootTask = getRootTask();
        mTaskSupervisor.mNoAnimActivities.clear();
        returningOptions = null;

        if (canTurnScreenOn()) {
            mTaskSupervisor.wakeUp("turnScreenOnFlag");
        } else {
            // If the screen is going to turn on because the caller explicitly requested it and
            // the keyguard is not showing don't attempt to sleep. Otherwise the Activity will
            // pause and then resume again later, which will result in a double life-cycle event.
            rootTask.checkReadyForSleep();
        }
    }

    void activityPaused(boolean timeout) {
        ProtoLog.v(WM_DEBUG_STATES, "Activity paused: token=%s, timeout=%b", appToken,
                timeout);

        if (task != null) {
            removePauseTimeout();

            final ActivityRecord pausingActivity = task.getPausingActivity();
            if (pausingActivity == this) {
                ProtoLog.v(WM_DEBUG_STATES, "Moving to PAUSED: %s %s", this,
                        (timeout ? "(due to timeout)" : " (pause complete)"));
                mAtmService.deferWindowLayout();
                try {
                    task.completePauseLocked(true /* resumeNext */, null /* resumingActivity */);
                } finally {
                    mAtmService.continueWindowLayout();
                }
                return;
            } else {
                EventLogTags.writeWmFailedToPause(mUserId, System.identityHashCode(this),
                        shortComponentName, pausingActivity != null
                                ? pausingActivity.shortComponentName : "(none)");
                if (isState(PAUSING)) {
                    setState(PAUSED, "activityPausedLocked");
                    if (finishing) {
                        ProtoLog.v(WM_DEBUG_STATES,
                                "Executing finish of failed to pause activity: %s", this);
                        completeFinishing("activityPausedLocked");
                    }
                }
            }
        }

        mDisplayContent.handleActivitySizeCompatModeIfNeeded(this);
        mRootWindowContainer.ensureActivitiesVisible(null, 0, !PRESERVE_WINDOWS);
    }

    /**
     * Schedule a pause timeout in case the app doesn't respond. We don't give it much time because
     * this directly impacts the responsiveness seen by the user.
     */
    void schedulePauseTimeout() {
        pauseTime = SystemClock.uptimeMillis();
        mAtmService.mH.postDelayed(mPauseTimeoutRunnable, PAUSE_TIMEOUT);
        ProtoLog.v(WM_DEBUG_STATES, "Waiting for pause to complete...");
    }

    private void removePauseTimeout() {
        mAtmService.mH.removeCallbacks(mPauseTimeoutRunnable);
    }

    private void removeDestroyTimeout() {
        mAtmService.mH.removeCallbacks(mDestroyTimeoutRunnable);
    }

    private void removeStopTimeout() {
        mAtmService.mH.removeCallbacks(mStopTimeoutRunnable);
    }

    void removeTimeouts() {
        mTaskSupervisor.removeIdleTimeoutForActivity(this);
        removePauseTimeout();
        removeStopTimeout();
        removeDestroyTimeout();
        finishLaunchTickingLocked();
    }

    void stopIfPossible() {
        if (DEBUG_SWITCH) Slog.d(TAG_SWITCH, "Stopping: " + this);
        final Task rootTask = getRootTask();
        if (isNoHistory()) {
            if (!finishing) {
                if (!rootTask.shouldSleepActivities()) {
                    ProtoLog.d(WM_DEBUG_STATES, "no-history finish of %s", this);
                    if (finishIfPossible("stop-no-history", false /* oomAdj */)
                            != FINISH_RESULT_CANCELLED) {
                        resumeKeyDispatchingLocked();
                        return;
                    }
                } else {
                    ProtoLog.d(WM_DEBUG_STATES, "Not finishing noHistory %s on stop "
                            + "because we're just sleeping", this);
                }
            }
        }

        if (!attachedToProcess()) {
            return;
        }
        resumeKeyDispatchingLocked();
        try {
            stopped = false;
            ProtoLog.v(WM_DEBUG_STATES, "Moving to STOPPING: %s (stop requested)", this);

            setState(STOPPING, "stopIfPossible");
            if (DEBUG_VISIBILITY) {
                Slog.v(TAG_VISIBILITY, "Stopping:" + this);
            }
            EventLogTags.writeWmStopActivity(
                    mUserId, System.identityHashCode(this), shortComponentName);
            mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                    StopActivityItem.obtain(configChangeFlags));

            mAtmService.mH.postDelayed(mStopTimeoutRunnable, STOP_TIMEOUT);
        } catch (Exception e) {
            // Maybe just ignore exceptions here...  if the process has crashed, our death
            // notification will clean things up.
            Slog.w(TAG, "Exception thrown during pause", e);
            // Just in case, assume it to be stopped.
            stopped = true;
            ProtoLog.v(WM_DEBUG_STATES, "Stop failed; moving to STOPPED: %s", this);
            setState(STOPPED, "stopIfPossible");
            if (deferRelaunchUntilPaused) {
                destroyImmediately("stop-except");
            }
        }
    }

    void activityStopped(Bundle newIcicle, PersistableBundle newPersistentState,
            CharSequence description) {
        final boolean isStopping = mState == STOPPING;
        if (!isStopping && mState != RESTARTING_PROCESS) {
            Slog.i(TAG, "Activity reported stop, but no longer stopping: " + this + " " + mState);
            removeStopTimeout();
            return;
        }
        if (newPersistentState != null) {
            mPersistentState = newPersistentState;
            mAtmService.notifyTaskPersisterLocked(task, false);
        }

        if (newIcicle != null) {
            // If icicle is null, this is happening due to a timeout, so we haven't really saved
            // the state.
            setSavedState(newIcicle);
            launchCount = 0;
            updateTaskDescription(description);
        }
        ProtoLog.i(WM_DEBUG_STATES, "Saving icicle of %s: %s", this, mIcicle);
        if (!stopped) {
            ProtoLog.v(WM_DEBUG_STATES, "Moving to STOPPED: %s (stop complete)", this);
            removeStopTimeout();
            stopped = true;
            if (isStopping) {
                setState(STOPPED, "activityStoppedLocked");
            }

            notifyAppStopped();

            if (finishing) {
                abortAndClearOptionsAnimation();
            } else {
                if (deferRelaunchUntilPaused) {
                    destroyImmediately("stop-config");
                    mRootWindowContainer.resumeFocusedTasksTopActivities();
                } else {
                    mRootWindowContainer.updatePreviousProcess(this);
                }
            }
            mTaskSupervisor.checkReadyForSleepLocked(true /* allowDelay */);
        }
    }

    void addToStopping(boolean scheduleIdle, boolean idleDelayed, String reason) {
        if (!mTaskSupervisor.mStoppingActivities.contains(this)) {
            EventLogTags.writeWmAddToStopping(mUserId, System.identityHashCode(this),
                    shortComponentName, reason);
            mTaskSupervisor.mStoppingActivities.add(this);
        }

        final Task rootTask = getRootTask();
        // If we already have a few activities waiting to stop, then give up on things going idle
        // and start clearing them out. Or if r is the last of activity of the last task the root
        // task will be empty and must be cleared immediately.
        boolean forceIdle = mTaskSupervisor.mStoppingActivities.size() > MAX_STOPPING_TO_FORCE
                || (isRootOfTask() && rootTask.getChildCount() <= 1);
        if (scheduleIdle || forceIdle) {
            ProtoLog.v(WM_DEBUG_STATES,
                    "Scheduling idle now: forceIdle=%b immediate=%b", forceIdle, !idleDelayed);

            if (!idleDelayed) {
                mTaskSupervisor.scheduleIdle();
            } else {
                mTaskSupervisor.scheduleIdleTimeout(this);
            }
        } else {
            rootTask.checkReadyForSleep();
        }
    }

    void startLaunchTickingLocked() {
        if (Build.IS_USER) {
            return;
        }
        if (launchTickTime == 0) {
            launchTickTime = SystemClock.uptimeMillis();
            continueLaunchTicking();
        }
    }

    private boolean continueLaunchTicking() {
        if (launchTickTime == 0) {
            return false;
        }

        final Task rootTask = getRootTask();
        if (rootTask == null) {
            return false;
        }

        rootTask.removeLaunchTickMessages();
        mAtmService.mH.postDelayed(mLaunchTickRunnable, LAUNCH_TICK);
        return true;
    }

    void removeLaunchTickRunnable() {
        mAtmService.mH.removeCallbacks(mLaunchTickRunnable);
    }

    void finishLaunchTickingLocked() {
        launchTickTime = 0;
        final Task rootTask = getRootTask();
        if (rootTask == null) {
            return;
        }
        rootTask.removeLaunchTickMessages();
    }

    boolean mayFreezeScreenLocked() {
        return mayFreezeScreenLocked(app);
    }

    private boolean mayFreezeScreenLocked(WindowProcessController app) {
        // Only freeze the screen if this activity is currently attached to
        // an application, and that application is not blocked or unresponding.
        // In any other case, we can't count on getting the screen unfrozen,
        // so it is best to leave as-is.
        return hasProcess() && !app.isCrashing() && !app.isNotResponding();
    }

    void startFreezingScreenLocked(int configChanges) {
        startFreezingScreenLocked(app, configChanges);
    }

    void startFreezingScreenLocked(WindowProcessController app, int configChanges) {
        if (mayFreezeScreenLocked(app)) {
            if (getParent() == null) {
                Slog.w(TAG_WM,
                        "Attempted to freeze screen with non-existing app token: " + appToken);
                return;
            }

            // Window configuration changes only effect windows, so don't require a screen freeze.
            int freezableConfigChanges = configChanges & ~(CONFIG_WINDOW_CONFIGURATION);
            if (freezableConfigChanges == 0 && okToDisplay()) {
                ProtoLog.v(WM_DEBUG_ORIENTATION, "Skipping set freeze of %s", appToken);
                return;
            }

            startFreezingScreen();
        }
    }

    void startFreezingScreen() {
        startFreezingScreen(ROTATION_UNDEFINED /* overrideOriginalDisplayRotation */);
    }

    void startFreezingScreen(int overrideOriginalDisplayRotation) {
        ProtoLog.i(WM_DEBUG_ORIENTATION,
                "Set freezing of %s: visible=%b freezing=%b visibleRequested=%b. %s",
                appToken, isVisible(), mFreezingScreen, mVisibleRequested,
                new RuntimeException().fillInStackTrace());
        if (!mVisibleRequested) {
            return;
        }

        // If the override is given, the rotation of display doesn't change but we still want to
        // cover the activity whose configuration is changing by freezing the display and running
        // the rotation animation.
        final boolean forceRotation = overrideOriginalDisplayRotation != ROTATION_UNDEFINED;
        if (!mFreezingScreen) {
            mFreezingScreen = true;
            mWmService.registerAppFreezeListener(this);
            mWmService.mAppsFreezingScreen++;
            if (mWmService.mAppsFreezingScreen == 1) {
                if (forceRotation) {
                    // Make sure normal rotation animation will be applied.
                    mDisplayContent.getDisplayRotation().cancelSeamlessRotation();
                }
                mWmService.startFreezingDisplay(0 /* exitAnim */, 0 /* enterAnim */,
                        mDisplayContent, overrideOriginalDisplayRotation);
                mWmService.mH.removeMessages(H.APP_FREEZE_TIMEOUT);
                mWmService.mH.sendEmptyMessageDelayed(H.APP_FREEZE_TIMEOUT, 2000);
            }
        }
        if (forceRotation) {
            // The rotation of the real display won't change, so in order to unfreeze the screen
            // via {@link #checkAppWindowsReadyToShow}, the windows have to be able to call
            // {@link WindowState#reportResized} (it is skipped if the window is freezing) to update
            // the drawn state.
            return;
        }
        final int count = mChildren.size();
        for (int i = 0; i < count; i++) {
            final WindowState w = mChildren.get(i);
            w.onStartFreezingScreen();
        }
    }

    boolean isFreezingScreen() {
        return mFreezingScreen;
    }

    @Override
    public void onAppFreezeTimeout() {
        Slog.w(TAG_WM, "Force clearing freeze: " + this);
        stopFreezingScreen(true, true);
    }

    void stopFreezingScreenLocked(boolean force) {
        if (force || frozenBeforeDestroy) {
            frozenBeforeDestroy = false;
            if (getParent() == null) {
                return;
            }
            ProtoLog.v(WM_DEBUG_ORIENTATION,
                        "Clear freezing of %s: visible=%b freezing=%b", appToken,
                                isVisible(), isFreezingScreen());
            stopFreezingScreen(true, force);
        }
    }

    void stopFreezingScreen(boolean unfreezeSurfaceNow, boolean force) {
        if (!mFreezingScreen) {
            return;
        }
        ProtoLog.v(WM_DEBUG_ORIENTATION,
                "Clear freezing of %s force=%b", this, force);
        final int count = mChildren.size();
        boolean unfrozeWindows = false;
        for (int i = 0; i < count; i++) {
            final WindowState w = mChildren.get(i);
            unfrozeWindows |= w.onStopFreezingScreen();
        }
        if (force || unfrozeWindows) {
            ProtoLog.v(WM_DEBUG_ORIENTATION, "No longer freezing: %s", this);
            mFreezingScreen = false;
            mWmService.unregisterAppFreezeListener(this);
            mWmService.mAppsFreezingScreen--;
            mWmService.mLastFinishedFreezeSource = this;
        }
        if (unfreezeSurfaceNow) {
            if (unfrozeWindows) {
                mWmService.mWindowPlacerLocked.performSurfacePlacement();
            }
            mWmService.stopFreezingDisplayLocked();
        }
    }

    void reportFullyDrawnLocked(boolean restoredFromBundle) {
        final TransitionInfoSnapshot info = mTaskSupervisor
            .getActivityMetricsLogger().logAppTransitionReportedDrawn(this, restoredFromBundle);
        if (info != null) {
            mTaskSupervisor.reportActivityLaunched(false /* timeout */, this,
                    info.windowsFullyDrawnDelayMs, info.getLaunchState());
        }
    }

    void onFirstWindowDrawn(WindowState win, WindowStateAnimator winAnimator) {
        firstWindowDrawn = true;
        // stop tracking
        mSplashScreenStyleEmpty = true;

        // We now have a good window to show, remove dead placeholders
        removeDeadWindows();

        if (mStartingWindow != null) {
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Finish starting %s"
                    + ": first real window is shown, no animation", win.mToken);
            // If this initial window is animating, stop it -- we will do an animation to reveal
            // it from behind the starting window, so there is no need for it to also be doing its
            // own stuff.
            win.cancelAnimation();
        }
        removeStartingWindow();
        updateReportedVisibilityLocked();
    }

    void onStartingWindowDrawn() {
        boolean wasTaskVisible = false;
        if (task != null) {
            mSplashScreenStyleEmpty = true;
            wasTaskVisible = task.getHasBeenVisible();
            task.setHasBeenVisible(true);
        }

        // The transition may not be executed if the starting process hasn't attached. But if the
        // starting window is drawn, the transition can start earlier. Exclude finishing and bubble
        // because it may be a trampoline.
        if (!wasTaskVisible && mStartingData != null && !finishing && !mLaunchedFromBubble
                && !mDisplayContent.mAppTransition.isReady()
                && !mDisplayContent.mAppTransition.isRunning()) {
            // The pending transition state will be cleared after the transition is started, so
            // save the state for launching the client later (used by LaunchActivityItem).
            mStartingData.mIsTransitionForward = mDisplayContent.isNextTransitionForward();
            mDisplayContent.executeAppTransition();
        }
    }

    /** Called when the windows associated app window container are drawn. */
    private void onWindowsDrawn(long timestampNs) {
        final TransitionInfoSnapshot info = mTaskSupervisor
                .getActivityMetricsLogger().notifyWindowsDrawn(this, timestampNs);
        final boolean validInfo = info != null;
        final int windowsDrawnDelayMs = validInfo ? info.windowsDrawnDelayMs : INVALID_DELAY;
        final @WaitResult.LaunchState int launchState =
                validInfo ? info.getLaunchState() : WaitResult.LAUNCH_STATE_UNKNOWN;
        // The activity may have been requested to be invisible (another activity has been launched)
        // so there is no valid info. But if it is the current top activity (e.g. sleeping), the
        // invalid state is still reported to make sure the waiting result is notified.
        if (validInfo || this == getDisplayArea().topRunningActivity()) {
            mTaskSupervisor.reportActivityLaunched(false /* timeout */, this,
                    windowsDrawnDelayMs, launchState);
        }
        finishLaunchTickingLocked();
        if (task != null) {
            task.setHasBeenVisible(true);
        }
    }

    /** Called when the windows associated app window container are visible. */
    void onWindowsVisible() {
        if (DEBUG_VISIBILITY) Slog.v(TAG_WM, "Reporting visible in " + appToken);
        mTaskSupervisor.stopWaitingForActivityVisible(this);
        if (DEBUG_SWITCH) Log.v(TAG_SWITCH, "windowsVisibleLocked(): " + this);
        if (!nowVisible) {
            nowVisible = true;
            lastVisibleTime = SystemClock.uptimeMillis();
            mAtmService.scheduleAppGcsLocked();
            // The nowVisible may be false in onAnimationFinished because the transition animation
            // was started by starting window but the main window hasn't drawn so the procedure
            // didn't schedule. Hence also check when nowVisible becomes true (drawn) to avoid the
            // closing activity having to wait until idle timeout to be stopped or destroyed if the
            // next activity won't report idle (e.g. repeated view animation).
            mTaskSupervisor.scheduleProcessStoppingAndFinishingActivitiesIfNeeded();

            // If the activity is visible, but no windows are eligible to start input, unfreeze
            // to avoid permanently frozen IME insets.
            if (mImeInsetsFrozenUntilStartInput && getWindow(
                    win -> WindowManager.LayoutParams.mayUseInputMethod(win.mAttrs.flags))
                    == null) {
                mImeInsetsFrozenUntilStartInput = false;
            }
        }
    }

    /** Called when the windows associated app window container are no longer visible. */
    void onWindowsGone() {
        if (DEBUG_VISIBILITY) Slog.v(TAG_WM, "Reporting gone in " + appToken);
        if (DEBUG_SWITCH) Log.v(TAG_SWITCH, "windowsGone(): " + this);
        nowVisible = false;
    }

    @Override
    void checkAppWindowsReadyToShow() {
        if (allDrawn == mLastAllDrawn) {
            return;
        }

        mLastAllDrawn = allDrawn;
        if (!allDrawn) {
            return;
        }

        // The token has now changed state to having all windows shown...  what to do, what to do?
        if (mFreezingScreen) {
            showAllWindowsLocked();
            stopFreezingScreen(false, true);
            ProtoLog.i(WM_DEBUG_ORIENTATION,
                    "Setting mOrientationChangeComplete=true because wtoken %s "
                            + "numInteresting=%d numDrawn=%d",
                    this, mNumInterestingWindows, mNumDrawnWindows);
            // This will set mOrientationChangeComplete and cause a pass through layout.
            setAppLayoutChanges(FINISH_LAYOUT_REDO_WALLPAPER,
                    "checkAppWindowsReadyToShow: freezingScreen");
        } else {
            setAppLayoutChanges(FINISH_LAYOUT_REDO_ANIM, "checkAppWindowsReadyToShow");

            // We can now show all of the drawn windows!
            if (!getDisplayContent().mOpeningApps.contains(this) && canShowWindows()) {
                showAllWindowsLocked();
            }
        }
    }

    /**
     * This must be called while inside a transaction.
     */
    void showAllWindowsLocked() {
        forAllWindows(windowState -> {
            if (DEBUG_VISIBILITY) Slog.v(TAG, "performing show on: " + windowState);
            windowState.performShowLocked();
        }, false /* traverseTopToBottom */);
    }

    void updateReportedVisibilityLocked() {
        if (DEBUG_VISIBILITY) Slog.v(TAG, "Update reported visibility: " + this);
        final int count = mChildren.size();

        mReportedVisibilityResults.reset();

        for (int i = 0; i < count; i++) {
            final WindowState win = mChildren.get(i);
            win.updateReportedVisibility(mReportedVisibilityResults);
        }

        int numInteresting = mReportedVisibilityResults.numInteresting;
        int numVisible = mReportedVisibilityResults.numVisible;
        int numDrawn = mReportedVisibilityResults.numDrawn;
        boolean nowGone = mReportedVisibilityResults.nowGone;

        boolean nowDrawn = numInteresting > 0 && numDrawn >= numInteresting;
        boolean nowVisible = numInteresting > 0 && numVisible >= numInteresting && isVisible();
        if (!nowGone) {
            // If the app is not yet gone, then it can only become visible/drawn.
            if (!nowDrawn) {
                nowDrawn = mReportedDrawn;
            }
            if (!nowVisible) {
                nowVisible = reportedVisible;
            }
        }
        if (DEBUG_VISIBILITY) Slog.v(TAG, "VIS " + this + ": interesting="
                + numInteresting + " visible=" + numVisible);
        if (nowDrawn != mReportedDrawn) {
            if (nowDrawn) {
                onWindowsDrawn(SystemClock.elapsedRealtimeNanos());
            }
            mReportedDrawn = nowDrawn;
        }
        if (nowVisible != reportedVisible) {
            if (DEBUG_VISIBILITY) Slog.v(TAG,
                    "Visibility changed in " + this + ": vis=" + nowVisible);
            reportedVisible = nowVisible;
            if (nowVisible) {
                onWindowsVisible();
            } else {
                onWindowsGone();
            }
        }
    }

    boolean isReportedDrawn() {
        return mReportedDrawn;
    }

    @Override
    void setClientVisible(boolean clientVisible) {
        // TODO(shell-transitions): Remove mDeferHidingClient once everything is shell-transitions.
        //                          pip activities should just remain in clientVisible.
        if (!clientVisible && mDeferHidingClient) return;
        ProtoLog.v(WM_DEBUG_APP_TRANSITIONS,
                "setClientVisible: %s clientVisible=%b Callers=%s", this, clientVisible,
                Debug.getCallers(5));
        super.setClientVisible(clientVisible);
        sendAppVisibilityToClients();
    }

    /**
     * Updated this app token tracking states for interesting and drawn windows based on the window.
     *
     * @return Returns true if the input window is considered interesting and drawn while all the
     *         windows in this app token where not considered drawn as of the last pass.
     */
    boolean updateDrawnWindowStates(WindowState w) {
        w.setDrawnStateEvaluated(true /*evaluated*/);

        if (DEBUG_STARTING_WINDOW_VERBOSE && w == mStartingWindow) {
            Slog.d(TAG, "updateWindows: starting " + w + " isOnScreen=" + w.isOnScreen()
                    + " allDrawn=" + allDrawn + " freezingScreen=" + mFreezingScreen);
        }

        if (allDrawn && !mFreezingScreen) {
            return false;
        }

        if (mLastTransactionSequence != mWmService.mTransactionSequence) {
            mLastTransactionSequence = mWmService.mTransactionSequence;
            mNumDrawnWindows = 0;
            startingDisplayed = false;

            // There is the main base application window, even if it is exiting, wait for it
            mNumInterestingWindows = findMainWindow(false /* includeStartingApp */) != null ? 1 : 0;
        }

        final WindowStateAnimator winAnimator = w.mWinAnimator;

        boolean isInterestingAndDrawn = false;

        if (!allDrawn && w.mightAffectAllDrawn()) {
            if (DEBUG_VISIBILITY || WM_DEBUG_ORIENTATION.isLogToLogcat()) {
                final boolean isAnimationSet = isAnimating(TRANSITION | PARENTS,
                        ANIMATION_TYPE_APP_TRANSITION);
                Slog.v(TAG, "Eval win " + w + ": isDrawn=" + w.isDrawn()
                        + ", isAnimationSet=" + isAnimationSet);
                if (!w.isDrawn()) {
                    Slog.v(TAG, "Not displayed: s=" + winAnimator.mSurfaceController
                            + " pv=" + w.isVisibleByPolicy()
                            + " mDrawState=" + winAnimator.drawStateToString()
                            + " ph=" + w.isParentWindowHidden() + " th=" + mVisibleRequested
                            + " a=" + isAnimationSet);
                }
            }

            if (w != mStartingWindow) {
                if (w.isInteresting()) {
                    // Add non-main window as interesting since the main app has already been added
                    if (findMainWindow(false /* includeStartingApp */) != w) {
                        mNumInterestingWindows++;
                    }
                    if (w.isDrawn()) {
                        mNumDrawnWindows++;

                        if (DEBUG_VISIBILITY || WM_DEBUG_ORIENTATION.isLogToLogcat()) {
                            Slog.v(TAG, "tokenMayBeDrawn: "
                                    + this + " w=" + w + " numInteresting=" + mNumInterestingWindows
                                    + " freezingScreen=" + mFreezingScreen
                                    + " mAppFreezing=" + w.mAppFreezing);
                        }

                        isInterestingAndDrawn = true;
                    }
                }
            } else if (w.isDrawn()) {
                // The starting window for this container is drawn.
                mTaskSupervisor.getActivityMetricsLogger().notifyStartingWindowDrawn(this);
                startingDisplayed = true;
            }
        }

        return isInterestingAndDrawn;
    }

    /**
     * Called when the input dispatching to a window associated with the app window container
     * timed-out.
     *
     * @param reason The reason for input dispatching time out.
     * @param windowPid The pid of the window input dispatching timed out on.
     * @return True if input dispatching should be aborted.
     */
    public boolean inputDispatchingTimedOut(String reason, int windowPid) {
        ActivityRecord anrActivity;
        WindowProcessController anrApp;
        boolean windowFromSameProcessAsActivity;
        synchronized (mAtmService.mGlobalLock) {
            anrActivity = getWaitingHistoryRecordLocked();
            anrApp = app;
            windowFromSameProcessAsActivity =
                    !hasProcess() || app.getPid() == windowPid || windowPid == INVALID_PID;
        }

        if (windowFromSameProcessAsActivity) {
            return mAtmService.mAmInternal.inputDispatchingTimedOut(anrApp.mOwner,
                    anrActivity.shortComponentName, anrActivity.info.applicationInfo,
                    shortComponentName, app, false, reason);
        } else {
            // In this case another process added windows using this activity token. So, we call the
            // generic service input dispatch timed out method so that the right process is blamed.
            long timeoutMillis = mAtmService.mAmInternal.inputDispatchingTimedOut(
                    windowPid, false /* aboveSystem */, reason);
            return timeoutMillis <= 0;
        }
    }

    private ActivityRecord getWaitingHistoryRecordLocked() {
        // First find the real culprit...  if this activity has stopped, then the key dispatching
        // timeout should not be caused by this.
        if (stopped) {
            final Task rootTask = mRootWindowContainer.getTopDisplayFocusedRootTask();
            if (rootTask == null) {
                return this;
            }
            // Try to use the one which is closest to top.
            ActivityRecord r = rootTask.getResumedActivity();
            if (r == null) {
                r = rootTask.getPausingActivity();
            }
            if (r != null) {
                return r;
            }
        }
        return this;
    }

    /** Checks whether the activity should be shown for current user. */
    public boolean okToShowLocked() {
        // We cannot show activities when the device is locked and the application is not
        // encryption aware.
        if (!StorageManager.isUserKeyUnlocked(mUserId)
                && !info.applicationInfo.isEncryptionAware()) {
            return false;
        }

        return (info.flags & FLAG_SHOW_FOR_ALL_USERS) != 0
                || (mTaskSupervisor.isCurrentProfileLocked(mUserId)
                && mAtmService.mAmInternal.isUserRunning(mUserId, 0 /* flags */));
    }

    boolean canBeTopRunning() {
        return !finishing && okToShowLocked();
    }

    /**
     * This method will return true if the activity is either visible, is becoming visible, is
     * currently pausing, or is resumed.
     */
    public boolean isInterestingToUserLocked() {
        return mVisibleRequested || nowVisible || mState == PAUSING || mState == RESUMED;
    }

    static int getTaskForActivityLocked(IBinder token, boolean onlyRoot) {
        final ActivityRecord r = ActivityRecord.forTokenLocked(token);
        if (r == null || r.getParent() == null) {
            return INVALID_TASK_ID;
        }
        final Task task = r.task;
        if (onlyRoot && r.compareTo(task.getRootActivity(
                false /*ignoreRelinquishIdentity*/, true /*setToBottomIfNone*/)) > 0) {
            return INVALID_TASK_ID;
        }
        return task.mTaskId;
    }

    static ActivityRecord isInRootTaskLocked(IBinder token) {
        final ActivityRecord r = ActivityRecord.forTokenLocked(token);
        return (r != null) ? r.getRootTask().isInTask(r) : null;
    }

    static Task getRootTask(IBinder token) {
        final ActivityRecord r = ActivityRecord.isInRootTaskLocked(token);
        if (r != null) {
            return r.getRootTask();
        }
        return null;
    }

    /**
     * @return display id to which this record is attached,
     *         {@link android.view.Display#INVALID_DISPLAY} if not attached.
     */
    int getDisplayId() {
        final Task rootTask = getRootTask();
        if (rootTask == null) {
            return INVALID_DISPLAY;
        }
        return rootTask.getDisplayId();
    }

    final boolean isDestroyable() {
        if (finishing || !hasProcess()) {
            // This would be redundant.
            return false;
        }
        if (isState(RESUMED) || getRootTask() == null || this == task.getPausingActivity()
                || !mHaveState || !stopped) {
            // We're not ready for this kind of thing.
            return false;
        }
        if (mVisibleRequested) {
            // The user would notice this!
            return false;
        }
        return true;
    }

    private static String createImageFilename(long createTime, int taskId) {
        return String.valueOf(taskId) + ACTIVITY_ICON_SUFFIX + createTime +
                IMAGE_EXTENSION;
    }

    void setTaskDescription(TaskDescription _taskDescription) {
        Bitmap icon;
        if (_taskDescription.getIconFilename() == null &&
                (icon = _taskDescription.getIcon()) != null) {
            final String iconFilename = createImageFilename(createTime, task.mTaskId);
            final File iconFile = new File(TaskPersister.getUserImagesDir(task.mUserId),
                    iconFilename);
            final String iconFilePath = iconFile.getAbsolutePath();
            mAtmService.getRecentTasks().saveImage(icon, iconFilePath);
            _taskDescription.setIconFilename(iconFilePath);
        }
        taskDescription = _taskDescription;
        getTask().updateTaskDescription();
    }

    void setLocusId(LocusId locusId) {
        if (Objects.equals(locusId, mLocusId)) return;
        mLocusId = locusId;
        final Task task = getTask();
        if (task != null) getTask().dispatchTaskInfoChangedIfNeeded(false /* force */);
    }

    LocusId getLocusId() {
        return mLocusId;
    }

    void setVoiceSessionLocked(IVoiceInteractionSession session) {
        voiceSession = session;
        pendingVoiceInteractionStart = false;
    }

    void clearVoiceSessionLocked() {
        voiceSession = null;
        pendingVoiceInteractionStart = false;
    }

    void showStartingWindow(boolean taskSwitch) {
        showStartingWindow(null /* prev */, false /* newTask */, taskSwitch,
                false /* startActivity */, null);
    }

    /**
     * Search for the candidate launching activity from currently visible activities.
     *
     * This activity could be launched from service, so we need to check whether there is existing a
     * foreground activity from the same process or same package.
     *
     */
    private ActivityRecord searchCandidateLaunchingActivity() {
        // Get previous activity below self
        ActivityRecord below = task.getActivityBelow(this);
        if (below == null) {
            below = task.getParent().getActivityBelow(this);
        }

        if (below == null || below.isActivityTypeHome()) {
            return null;
        }
        final WindowProcessController myProcess = app != null
                ? app : mAtmService.mProcessNames.get(processName, info.applicationInfo.uid);
        final WindowProcessController candidateProcess = below.app != null
                        ? below.app
                        : mAtmService.mProcessNames.get(below.processName,
                                below.info.applicationInfo.uid);
        // same process or same package
        if (candidateProcess == myProcess
                || mActivityComponent.getPackageName()
                .equals(below.mActivityComponent.getPackageName())) {
            return below;
        }
        return null;
    }

    private boolean shouldUseEmptySplashScreen(ActivityRecord sourceRecord, boolean startActivity) {
        if (sourceRecord == null && !startActivity) {
            // Use empty style if this activity is not top activity. This could happen when adding
            // a splash screen window to the warm start activity which is re-create because top is
            // finishing.
            final ActivityRecord above = task.getActivityAbove(this);
            if (above != null) {
                return true;
            }
        }
        if (mPendingOptions != null) {
            final int optionsStyle = mPendingOptions.getSplashScreenStyle();
            if (optionsStyle == SplashScreen.SPLASH_SCREEN_STYLE_EMPTY) {
                return true;
            } else if (optionsStyle == SplashScreen.SPLASH_SCREEN_STYLE_ICON) {
                return false;
            }
        }
        if (sourceRecord == null) {
            sourceRecord = searchCandidateLaunchingActivity();
        }

        if (sourceRecord != null && !sourceRecord.isActivityTypeHome()) {
            return sourceRecord.mSplashScreenStyleEmpty;
        }

        // If this activity was launched from a system surface, never use an empty splash screen
        // Need to check sourceRecord before in case this activity is launched from service.
        if (launchedFromSystemSurface()) {
            return false;
        }

        // Otherwise use empty.
        return true;
    }

    private int getSplashscreenTheme() {
        // Find the splash screen theme. User can override the persisted theme by
        // ActivityOptions.
        String splashScreenThemeResName = mPendingOptions != null
                ? mPendingOptions.getSplashScreenThemeResName() : null;
        if (splashScreenThemeResName == null || splashScreenThemeResName.isEmpty()) {
            try {
                splashScreenThemeResName = mAtmService.getPackageManager()
                        .getSplashScreenTheme(packageName, mUserId);
            } catch (RemoteException ignore) {
                // Just use the default theme
            }
        }
        int splashScreenThemeResId = 0;
        if (splashScreenThemeResName != null && !splashScreenThemeResName.isEmpty()) {
            try {
                final Context packageContext = mAtmService.mContext
                        .createPackageContext(packageName, 0);
                splashScreenThemeResId = packageContext.getResources()
                        .getIdentifier(splashScreenThemeResName, null, null);
            } catch (PackageManager.NameNotFoundException
                    | Resources.NotFoundException ignore) {
                // Just use the default theme
            }
        }
        return splashScreenThemeResId;
    }

    /**
     * @param prev Previous activity which contains a starting window.
     * @param startActivity Whether this activity is just created from starter.
     * @param sourceRecord The source activity which start this activity.
     */
    void showStartingWindow(ActivityRecord prev, boolean newTask, boolean taskSwitch,
            boolean startActivity, ActivityRecord sourceRecord) {
        if (mTaskOverlay) {
            // We don't show starting window for overlay activities.
            return;
        }
        if (mPendingOptions != null
                && mPendingOptions.getAnimationType() == ActivityOptions.ANIM_SCENE_TRANSITION) {
            // Don't show starting window when using shared element transition.
            return;
        }

        final CompatibilityInfo compatInfo =
                mAtmService.compatibilityInfoForPackageLocked(info.applicationInfo);

        mSplashScreenStyleEmpty = shouldUseEmptySplashScreen(sourceRecord, startActivity);

        final int splashScreenTheme = startActivity ? getSplashscreenTheme() : 0;
        final int resolvedTheme = evaluateStartingWindowTheme(prev, packageName, theme,
                splashScreenTheme);

        final boolean activityCreated =
                mState.ordinal() >= STARTED.ordinal() && mState.ordinal() <= STOPPED.ordinal();
        // If this activity is just created and all activities below are finish, treat this
        // scenario as warm launch.
        final boolean newSingleActivity = !newTask && !activityCreated
                && task.getActivity((r) -> !r.finishing && r != this) == null;

        final boolean shown = addStartingWindow(packageName, resolvedTheme,
                compatInfo, nonLocalizedLabel, labelRes, icon, logo, windowFlags,
                prev != null ? prev.appToken : null,
                newTask || newSingleActivity, taskSwitch, isProcessRunning(),
                allowTaskSnapshot(), activityCreated, mSplashScreenStyleEmpty);
        if (shown) {
            mStartingWindowState = STARTING_WINDOW_SHOWN;
        }
    }

    /**
     * If any activities below the top running one are in the INITIALIZING state and they have a
     * starting window displayed then remove that starting window. It is possible that the activity
     * in this state will never resumed in which case that starting window will be orphaned.
     * <p>
     * It should only be called if this activity is behind other fullscreen activity.
     */
    void cancelInitializing() {
        if (mStartingWindowState == STARTING_WINDOW_SHOWN) {
            // Remove orphaned starting window.
            if (DEBUG_VISIBILITY) Slog.w(TAG_VISIBILITY, "Found orphaned starting window " + this);
            mStartingWindowState = STARTING_WINDOW_REMOVED;
            removeStartingWindowAnimation(false /* prepareAnimation */);
        }
        if (isState(INITIALIZING) && !shouldBeVisible(
                true /* behindFullscreenActivity */, true /* ignoringKeyguard */)) {
            // Remove the unknown visibility record because an invisible activity shouldn't block
            // the keyguard transition.
            mDisplayContent.mUnknownAppVisibilityController.appRemovedOrHidden(this);
        }
    }

    void postWindowRemoveStartingWindowCleanup(WindowState win) {
        // TODO: Something smells about the code below...Is there a better way?
        if (mStartingWindow == win) {
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Notify removed startingWindow %s", win);
            removeStartingWindow();
        } else if (mChildren.size() == 0) {
            // If this is the last window and we had requested a starting transition window,
            // well there is no point now.
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Nulling last startingData");
            mStartingData = null;
            if (mVisibleSetFromTransferredStartingWindow) {
                // We set the visible state to true for the token from a transferred starting
                // window. We now reset it back to false since the starting window was the last
                // window in the token.
                setVisible(false);
            }
        } else if (mChildren.size() == 1 && mStartingSurface != null && !isRelaunching()) {
            // If this is the last window except for a starting transition window,
            // we need to get rid of the starting transition.
            ProtoLog.v(WM_DEBUG_STARTING_WINDOW, "Last window, removing starting window %s", win);
            removeStartingWindow();
        }
    }

    void removeDeadWindows() {
        for (int winNdx = mChildren.size() - 1; winNdx >= 0; --winNdx) {
            WindowState win = mChildren.get(winNdx);
            if (win.mAppDied) {
                ProtoLog.w(WM_DEBUG_ADD_REMOVE,
                        "removeDeadWindows: %s", win);
                // Set mDestroying, we don't want any animation or delayed removal here.
                win.mDestroying = true;
                // Also removes child windows.
                win.removeIfPossible();
            }
        }
    }

    boolean hasWindowsAlive() {
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            // No need to loop through child windows as the answer should be the same as that of the
            // parent window.
            if (!(mChildren.get(i)).mAppDied) {
                return true;
            }
        }
        return false;
    }

    void setWillReplaceWindows(boolean animate) {
        ProtoLog.d(WM_DEBUG_ADD_REMOVE,
                "Marking app token %s with replacing windows.", this);

        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState w = mChildren.get(i);
            w.setWillReplaceWindow(animate);
        }
    }

    void setWillReplaceChildWindows() {
        ProtoLog.d(WM_DEBUG_ADD_REMOVE, "Marking app token %s"
                + " with replacing child windows.", this);
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState w = mChildren.get(i);
            w.setWillReplaceChildWindows();
        }
    }

    void clearWillReplaceWindows() {
        ProtoLog.d(WM_DEBUG_ADD_REMOVE,
                "Resetting app token %s of replacing window marks.", this);

        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState w = mChildren.get(i);
            w.clearWillReplaceWindow();
        }
    }

    void requestUpdateWallpaperIfNeeded() {
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState w = mChildren.get(i);
            w.requestUpdateWallpaperIfNeeded();
        }
    }

    /**
     * @return The to top most child window for which {@link LayoutParams#isFullscreen()} returns
     *         true and isn't fully transparent.
     */
    WindowState getTopFullscreenOpaqueWindow() {
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState win = mChildren.get(i);
            if (win != null && win.mAttrs.isFullscreen() && !win.isFullyTransparent()) {
                return win;
            }
        }
        return null;
    }

    WindowState findMainWindow() {
        return findMainWindow(true);
    }

    /**
     * Finds the main window that either has type base application or application starting if
     * requested.
     *
     * @param includeStartingApp Allow to search application-starting windows to also be returned.
     * @return The main window of type base application or application starting if requested.
     */
    WindowState findMainWindow(boolean includeStartingApp) {
        WindowState candidate = null;
        for (int j = mChildren.size() - 1; j >= 0; --j) {
            final WindowState win = mChildren.get(j);
            final int type = win.mAttrs.type;
            // No need to loop through child window as base application and starting types can't be
            // child windows.
            if (type == TYPE_BASE_APPLICATION
                    || (includeStartingApp && type == TYPE_APPLICATION_STARTING)) {
                // In cases where there are multiple windows, we prefer the non-exiting window. This
                // happens for example when replacing windows during an activity relaunch. When
                // constructing the animation, we want the new window, not the exiting one.
                if (win.mAnimatingExit) {
                    candidate = win;
                } else {
                    return win;
                }
            }
        }
        return candidate;
    }

    SurfaceControl getAppAnimationLayer() {
        return getAppAnimationLayer(isActivityTypeHome() ? ANIMATION_LAYER_HOME
                : needsZBoost() ? ANIMATION_LAYER_BOOSTED
                        : ANIMATION_LAYER_STANDARD);
    }

    @Override
    boolean needsZBoost() {
        return mNeedsZBoost || super.needsZBoost();
    }

    @Override
    public SurfaceControl getAnimationLeashParent() {
        // For transitions in the root pinned task (menu activity) we just let them occur as a child
        // of the root pinned task.
        // All normal app transitions take place in an animation layer which is below the root
        // pinned task but may be above the parent tasks of the given animating apps by default.
        // When a new hierarchical animation is enabled, we just let them occur as a child of the
        // parent task, i.e. the hierarchy of the surfaces is unchanged.
        if (inPinnedWindowingMode()) {
            return getRootTask().getSurfaceControl();
        } else {
            return super.getAnimationLeashParent();
        }
    }

    @VisibleForTesting
    boolean shouldAnimate() {
        return task == null || task.shouldAnimate();
    }

    /**
     * Creates a layer to apply crop to an animation.
     */
    private SurfaceControl createAnimationBoundsLayer(Transaction t) {
        ProtoLog.i(WM_DEBUG_APP_TRANSITIONS_ANIM, "Creating animation bounds layer");
        final SurfaceControl.Builder builder = makeAnimationLeash()
                .setParent(getAnimationLeashParent())
                .setName(getSurfaceControl() + " - animation-bounds")
                .setCallsite("ActivityRecord.createAnimationBoundsLayer");
        final SurfaceControl boundsLayer = builder.build();
        t.show(boundsLayer);
        return boundsLayer;
    }

    @Override
    public boolean shouldDeferAnimationFinish(Runnable endDeferFinishCallback) {
        return mAnimatingActivityRegistry != null
                && mAnimatingActivityRegistry.notifyAboutToFinish(
                this, endDeferFinishCallback);
    }

    @Override
    boolean isWaitingForTransitionStart() {
        final DisplayContent dc = getDisplayContent();
        return dc != null && dc.mAppTransition.isTransitionSet()
                && (dc.mOpeningApps.contains(this)
                || dc.mClosingApps.contains(this)
                || dc.mChangingContainers.contains(this));
    }

    boolean isTransitionForward() {
        return (mStartingData != null && mStartingData.mIsTransitionForward)
                || mDisplayContent.isNextTransitionForward();
    }

    private int getAnimationLayer() {
        // The leash is parented to the animation layer. We need to preserve the z-order by using
        // the prefix order index, but we boost if necessary.
        int layer;
        if (!inPinnedWindowingMode()) {
            layer = getPrefixOrderIndex();
        } else {
            // Root pinned tasks have animations take place within themselves rather than an
            // animation layer so we need to preserve the order relative to the root task (e.g.
            // the order of our task/parent).
            layer = getParent().getPrefixOrderIndex();
        }

        if (mNeedsZBoost) {
            layer += Z_BOOST_BASE;
        }
        return layer;
    }

    @Override
    public void onAnimationLeashCreated(Transaction t, SurfaceControl leash) {
        t.setLayer(leash, getAnimationLayer());
        getDisplayContent().assignRootTaskOrdering();
    }

    @Override
    public void onLeashAnimationStarting(Transaction t, SurfaceControl leash) {
        if (mAnimatingActivityRegistry != null) {
            mAnimatingActivityRegistry.notifyStarting(this);
        }

        // If the animation needs to be cropped then an animation bounds layer is created as a
        // child of the root pinned task or animation layer. The leash is then reparented to this
        // new layer.
        if (mNeedsAnimationBoundsLayer) {
            mTmpRect.setEmpty();
            if (getDisplayContent().mAppTransitionController.isTransitWithinTask(
                    getTransit(), task)) {
                task.getBounds(mTmpRect);
            } else {
                final Task rootTask = getRootTask();
                if (rootTask == null) {
                    return;
                }
                // Set clip rect to root task bounds.
                rootTask.getBounds(mTmpRect);
            }
            mAnimationBoundsLayer = createAnimationBoundsLayer(t);

            // Crop to root task bounds.
            t.setLayer(leash, 0);
            t.setLayer(mAnimationBoundsLayer, getAnimationLayer());

            // Reparent leash to animation bounds layer.
            t.reparent(leash, mAnimationBoundsLayer);
        }
    }

    @Override
    void prepareSurfaces() {
        final boolean show = isVisible() || isAnimating(PARENTS,
                ANIMATION_TYPE_APP_TRANSITION | ANIMATION_TYPE_RECENTS);

        if (mSurfaceControl != null) {
            if (show && !mLastSurfaceShowing) {
                getSyncTransaction().show(mSurfaceControl);
            } else if (!show && mLastSurfaceShowing) {
                getSyncTransaction().hide(mSurfaceControl);
            }
        }
        if (mThumbnail != null) {
            mThumbnail.setShowing(getPendingTransaction(), show);
        }
        mLastSurfaceShowing = show;
        super.prepareSurfaces();
    }

    /**
     * @return Whether our {@link #getSurfaceControl} is currently showing.
     */
    boolean isSurfaceShowing() {
        return mLastSurfaceShowing;
    }

    void attachThumbnailAnimation() {
        if (!isAnimating(PARENTS, ANIMATION_TYPE_APP_TRANSITION)) {
            return;
        }
        final HardwareBuffer thumbnailHeader =
                getDisplayContent().mAppTransition.getAppTransitionThumbnailHeader(task);
        if (thumbnailHeader == null) {
            ProtoLog.d(WM_DEBUG_APP_TRANSITIONS, "No thumbnail header bitmap for: %s", task);
            return;
        }
        clearThumbnail();
        final Transaction transaction = getAnimatingContainer().getPendingTransaction();
        mThumbnail = new WindowContainerThumbnail(transaction, getAnimatingContainer(),
                thumbnailHeader);
        mThumbnail.startAnimation(transaction, loadThumbnailAnimation(thumbnailHeader));
    }

    /**
     * Attaches a surface with a thumbnail for the
     * {@link android.app.ActivityOptions#ANIM_OPEN_CROSS_PROFILE_APPS} animation.
     */
    void attachCrossProfileAppsThumbnailAnimation() {
        if (!isAnimating(PARENTS, ANIMATION_TYPE_APP_TRANSITION)) {
            return;
        }
        clearThumbnail();

        final WindowState win = findMainWindow();
        if (win == null) {
            return;
        }
        final Rect frame = win.getRelativeFrame();
        final int thumbnailDrawableRes = task.mUserId == mWmService.mCurrentUserId
                ? R.drawable.ic_account_circle
                : R.drawable.ic_corp_badge;
        final HardwareBuffer thumbnail =
                getDisplayContent().mAppTransition
                        .createCrossProfileAppsThumbnail(thumbnailDrawableRes, frame);
        if (thumbnail == null) {
            return;
        }
        final Transaction transaction = getPendingTransaction();
        mThumbnail = new WindowContainerThumbnail(transaction, getTask(), thumbnail);
        final Animation animation =
                getDisplayContent().mAppTransition.createCrossProfileAppsThumbnailAnimationLocked(
                        frame);
        mThumbnail.startAnimation(transaction, animation, new Point(frame.left, frame.top));
    }

    private Animation loadThumbnailAnimation(HardwareBuffer thumbnailHeader) {
        final DisplayInfo displayInfo = mDisplayContent.getDisplayInfo();

        // If this is a multi-window scenario, we use the windows frame as
        // destination of the thumbnail header animation. If this is a full screen
        // window scenario, we use the whole display as the target.
        WindowState win = findMainWindow();
        Rect insets;
        Rect appRect;
        if (win != null) {
            insets = win.getInsetsStateWithVisibilityOverride().calculateInsets(
                    win.getFrame(), Type.systemBars(), false /* ignoreVisibility */);
            appRect = new Rect(win.getFrame());
            appRect.inset(insets);
        } else {
            insets = null;
            appRect = new Rect(0, 0, displayInfo.appWidth, displayInfo.appHeight);
        }
        final Configuration displayConfig = mDisplayContent.getConfiguration();
        return getDisplayContent().mAppTransition.createThumbnailAspectScaleAnimationLocked(
                appRect, insets, thumbnailHeader, task, displayConfig.uiMode,
                displayConfig.orientation);
    }

    @Override
    public void onAnimationLeashLost(Transaction t) {
        super.onAnimationLeashLost(t);
        if (mAnimationBoundsLayer != null) {
            t.remove(mAnimationBoundsLayer);
            mAnimationBoundsLayer = null;
        }

        if (mAnimatingActivityRegistry != null) {
            mAnimatingActivityRegistry.notifyFinished(this);
        }
    }

    @Override
    protected void onAnimationFinished(@AnimationType int type, AnimationAdapter anim) {
        super.onAnimationFinished(type, anim);

        Trace.traceBegin(TRACE_TAG_WINDOW_MANAGER, "AR#onAnimationFinished");
        mTransit = TRANSIT_OLD_UNSET;
        mTransitFlags = 0;
        mNeedsAnimationBoundsLayer = false;

        setAppLayoutChanges(FINISH_LAYOUT_REDO_ANIM | FINISH_LAYOUT_REDO_WALLPAPER,
                "ActivityRecord");

        clearThumbnail();
        setClientVisible(isVisible() || mVisibleRequested);

        getDisplayContent().computeImeTargetIfNeeded(this);

        if (DEBUG_ANIM) Slog.v(TAG, "Animation done in " + this
                + ": reportedVisible=" + reportedVisible
                + " okToDisplay=" + okToDisplay()
                + " okToAnimate=" + okToAnimate()
                + " startingDisplayed=" + startingDisplayed);

        // clean up thumbnail window
        if (mThumbnail != null) {
            mThumbnail.destroy();
            mThumbnail = null;
        }

        // WindowState.onExitAnimationDone might modify the children list, so make a copy and then
        // traverse the copy.
        final ArrayList<WindowState> children = new ArrayList<>(mChildren);
        children.forEach(WindowState::onExitAnimationDone);
        // The starting window could transfer to another activity after app transition started, in
        // that case the latest top activity might not receive exit animation done callback if the
        // starting window didn't applied exit animation success. Notify animation finish to the
        // starting window if needed.
        if (task != null && startingMoved) {
            final WindowState transferredStarting = task.getWindow(w ->
                    w.mAttrs.type == TYPE_APPLICATION_STARTING);
            if (transferredStarting != null && transferredStarting.mAnimatingExit
                    && !transferredStarting.isSelfAnimating(0 /* flags */,
                    ANIMATION_TYPE_WINDOW_ANIMATION)) {
                transferredStarting.onExitAnimationDone();
            }
        }

        getDisplayContent().mAppTransition.notifyAppTransitionFinishedLocked(token);
        scheduleAnimation();

        // Schedule to handle the stopping and finishing activities which the animation is done
        // because the activities which were animating have not been stopped yet.
        mTaskSupervisor.scheduleProcessStoppingAndFinishingActivitiesIfNeeded();
        Trace.traceEnd(TRACE_TAG_WINDOW_MANAGER);
    }

    void clearAnimatingFlags() {
        boolean wallpaperMightChange = false;
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            final WindowState win = mChildren.get(i);
            wallpaperMightChange |= win.clearAnimatingFlags();
        }
        if (wallpaperMightChange) {
            requestUpdateWallpaperIfNeeded();
        }
    }

    @Override
    void cancelAnimation() {
        super.cancelAnimation();
        clearThumbnail();
    }

    @VisibleForTesting
    WindowContainerThumbnail getThumbnail() {
        return mThumbnail;
    }

    private void clearThumbnail() {
        if (mThumbnail == null) {
            return;
        }
        mThumbnail.destroy();
        mThumbnail = null;
    }

    public @TransitionOldType int getTransit() {
        return mTransit;
    }

    int getTransitFlags() {
        return mTransitFlags;
    }

    void registerRemoteAnimations(RemoteAnimationDefinition definition) {
        mRemoteAnimationDefinition = definition;
        if (definition != null) {
            definition.linkToDeath(this::unregisterRemoteAnimations);
        }
    }

    void unregisterRemoteAnimations() {
        mRemoteAnimationDefinition = null;
    }

    @Override
    RemoteAnimationDefinition getRemoteAnimationDefinition() {
        return mRemoteAnimationDefinition;
    }

    @Override
    void applyFixedRotationTransform(DisplayInfo info, DisplayFrames displayFrames,
            Configuration config) {
        super.applyFixedRotationTransform(info, displayFrames, config);
        ensureActivityConfiguration(0 /* globalChanges */, false /* preserveWindow */);
    }

    @Override
    void onCancelFixedRotationTransform(int originalDisplayRotation) {
        if (this != mDisplayContent.getLastOrientationSource()) {
            // This activity doesn't affect display rotation.
            return;
        }
        final int requestedOrientation = getRequestedConfigurationOrientation();
        if (requestedOrientation != ORIENTATION_UNDEFINED
                && requestedOrientation != mDisplayContent.getConfiguration().orientation) {
            // Only need to handle the activity that can be rotated with display or the activity
            // has requested the same orientation.
            return;
        }

        mDisplayContent.mPinnedTaskController.onCancelFixedRotationTransform(task);
        // Perform rotation animation according to the rotation of this activity.
        startFreezingScreen(originalDisplayRotation);
        // This activity may relaunch or perform configuration change so once it has reported drawn,
        // the screen can be unfrozen.
        ensureActivityConfiguration(0 /* globalChanges */, !PRESERVE_WINDOWS);
    }

    void setRequestedOrientation(int requestedOrientation) {
        setOrientation(requestedOrientation, this);

        // Push the new configuration to the requested app in case where it's not pushed, e.g. when
        // the request is handled at task level with letterbox.
        if (!getMergedOverrideConfiguration().equals(
                mLastReportedConfiguration.getMergedConfiguration())) {
            ensureActivityConfiguration(0 /* globalChanges */, false /* preserveWindow */);
        }

        mAtmService.getTaskChangeNotificationController().notifyActivityRequestedOrientationChanged(
                task.mTaskId, requestedOrientation);
    }

    /*
     * Called from {@link RootWindowContainer#ensureVisibilityAndConfig} to make sure the
     * orientation is updated before the app becomes visible.
     */
    void reportDescendantOrientationChangeIfNeeded() {
        // Orientation request is exposed only when we're visible. Therefore visibility change
        // will change requested orientation. Notify upward the hierarchy ladder to adjust
        // configuration. This is important to cases where activities with incompatible
        // orientations launch, or user goes back from an activity of bi-orientation to an
        // activity with specified orientation.
        if (getRequestedOrientation() == SCREEN_ORIENTATION_UNSET) {
            return;
        }

        if (onDescendantOrientationChanged(this)) {
            // WM Shell can show additional UI elements, e.g. a restart button for size compat mode
            // so ensure that WM Shell is called when an activity becomes visible.
            task.dispatchTaskInfoChangedIfNeeded(/* force= */ true);
        }
    }

    /**
     * We override because this class doesn't want its children affecting its reported orientation
     * in anyway.
     */
    @Override
    int getOrientation(int candidate) {
        if (candidate == SCREEN_ORIENTATION_BEHIND) {
            // Allow app to specify orientation regardless of its visibility state if the current
            // candidate want us to use orientation behind. I.e. the visible app on-top of this one
            // wants us to use the orientation of the app behind it.
            return mOrientation;
        }

        // The {@link ActivityRecord} should only specify an orientation when it is not closing.
        // Allowing closing {@link ActivityRecord} to participate can lead to an Activity in another
        // task being started in the wrong orientation during the transition.
        if (!getDisplayContent().mClosingApps.contains(this)
                && (isVisibleRequested() || getDisplayContent().mOpeningApps.contains(this))) {
            return mOrientation;
        }

        return SCREEN_ORIENTATION_UNSET;
    }

    /** Returns the app's preferred orientation regardless of its currently visibility state. */
    int getRequestedOrientation() {
        return mOrientation;
    }

    /**
     * Set the last reported global configuration to the client. Should be called whenever a new
     * global configuration is sent to the client for this activity.
     */
    void setLastReportedGlobalConfiguration(@NonNull Configuration config) {
        mLastReportedConfiguration.setGlobalConfiguration(config);
    }

    /**
     * Set the last reported configuration to the client. Should be called whenever
     * a new merged configuration is sent to the client for this activity.
     */
    void setLastReportedConfiguration(@NonNull MergedConfiguration config) {
        setLastReportedConfiguration(config.getGlobalConfiguration(),
            config.getOverrideConfiguration());
    }

    private void setLastReportedConfiguration(Configuration global, Configuration override) {
        mLastReportedConfiguration.setConfiguration(global, override);
    }

    @Nullable
    CompatDisplayInsets getCompatDisplayInsets() {
        return mCompatDisplayInsets;
    }

    /**
     * @return {@code true} if this activity is in size compatibility mode that uses the different
     *         density than its parent or its bounds don't fit in parent naturally.
     */
    boolean inSizeCompatMode() {
        if (mInSizeCompatModeForBounds) {
            return true;
        }
        if (mCompatDisplayInsets == null || !shouldCreateCompatDisplayInsets()
                // The orientation is different from parent when transforming.
                || isFixedRotationTransforming()) {
            return false;
        }
        final Rect appBounds = getConfiguration().windowConfiguration.getAppBounds();
        if (appBounds == null) {
            // The app bounds hasn't been computed yet.
            return false;
        }
        final WindowContainer parent = getParent();
        if (parent == null) {
            // The parent of detached Activity can be null.
            return false;
        }
        final Configuration parentConfig = parent.getConfiguration();
        // Although colorMode, screenLayout, smallestScreenWidthDp are also fixed, generally these
        // fields should be changed with density and bounds, so here only compares the most
        // significant field.
        return parentConfig.densityDpi != getConfiguration().densityDpi;
    }

    /**
     * Indicates the activity will keep the bounds and screen configuration when it was first
     * launched, no matter how its parent changes.
     *
     * <p>If {@true}, then {@link CompatDisplayInsets} will be created in {@link
     * #resolveOverrideConfiguration} to "freeze" activity bounds and insets.
     *
     * @return {@code true} if this activity is declared as non-resizable and fixed orientation or
     *         aspect ratio.
     */
    boolean shouldCreateCompatDisplayInsets() {
        switch (info.supportsSizeChanges()) {
            case SIZE_CHANGES_SUPPORTED_METADATA:
            case SIZE_CHANGES_SUPPORTED_OVERRIDE:
                return false;
            case SIZE_CHANGES_UNSUPPORTED_OVERRIDE:
                return true;
            default:
                // Fall through
        }
        if (inMultiWindowMode() || getWindowConfiguration().hasWindowDecorCaption()) {
            final ActivityRecord root = task != null ? task.getRootActivity() : null;
            if (root != null && root != this && !root.shouldCreateCompatDisplayInsets()) {
                // If the root activity doesn't use size compatibility mode, the activities above
                // are forced to be the same for consistent visual appearance.
                return false;
            }
        }
        return !isResizeable() && (info.isFixedOrientation() || info.hasFixedAspectRatio())
                // The configuration of non-standard type should be enforced by system.
                // {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} is set when this activity is
                // added to a task, but this function is called when resolving the launch params, at
                // which point, the activity type is still undefined if it will be standard.
                // For other non-standard types, the type is set in the constructor, so this should
                // not be a problem.
                && isActivityTypeStandardOrUndefined();
    }

    @Override
    boolean hasSizeCompatBounds() {
        return mSizeCompatBounds != null;
    }

    // TODO(b/36505427): Consider moving this method and similar ones to ConfigurationContainer.
    private void updateCompatDisplayInsets() {
        if (mCompatDisplayInsets != null || !shouldCreateCompatDisplayInsets()) {
            // The override configuration is set only once in size compatibility mode.
            return;
        }

        Configuration overrideConfig = getRequestedOverrideConfiguration();
        final Configuration fullConfig = getConfiguration();

        // Ensure the screen related fields are set. It is used to prevent activity relaunch
        // when moving between displays. For screenWidthDp and screenWidthDp, because they
        // are relative to bounds and density, they will be calculated in
        // {@link Task#computeConfigResourceOverrides} and the result will also be
        // relatively fixed.
        overrideConfig.colorMode = fullConfig.colorMode;
        overrideConfig.densityDpi = fullConfig.densityDpi;
        // The smallest screen width is the short side of screen bounds. Because the bounds
        // and density won't be changed, smallestScreenWidthDp is also fixed.
        overrideConfig.smallestScreenWidthDp = fullConfig.smallestScreenWidthDp;
        if (info.isFixedOrientation()) {
            // lock rotation too. When in size-compat, onConfigurationChanged will watch for and
            // apply runtime rotation changes.
            overrideConfig.windowConfiguration.setRotation(
                    fullConfig.windowConfiguration.getRotation());
        }

        // The role of CompatDisplayInsets is like the override bounds.
        mCompatDisplayInsets =
                new CompatDisplayInsets(
                        mDisplayContent, this, mLetterboxBoundsForFixedOrientationAndAspectRatio);
    }

    @VisibleForTesting
    void clearSizeCompatMode() {
        mInSizeCompatModeForBounds = false;
        mSizeCompatScale = 1f;
        mSizeCompatBounds = null;
        mCompatDisplayInsets = null;

        onRequestedOverrideConfigurationChanged(getRequestedOverrideConfiguration());
    }

    @Override
    public boolean matchParentBounds() {
        final Rect overrideBounds = getResolvedOverrideBounds();
        if (overrideBounds.isEmpty()) {
            return true;
        }
        // An activity in size compatibility mode may have override bounds which equals to its
        // parent bounds, so the exact bounds should also be checked to allow IME window to attach
        // to the activity. See {@link DisplayContent#shouldImeAttachedToApp}.
        final WindowContainer parent = getParent();
        return parent == null || parent.getBounds().equals(overrideBounds);
    }

    @Override
    float getSizeCompatScale() {
        return hasSizeCompatBounds() ? mSizeCompatScale : super.getSizeCompatScale();
    }

    @Override
    void resolveOverrideConfiguration(Configuration newParentConfiguration) {
        final Configuration requestedOverrideConfig = getRequestedOverrideConfiguration();
        if (requestedOverrideConfig.assetsSeq != ASSETS_SEQ_UNDEFINED
                && newParentConfiguration.assetsSeq > requestedOverrideConfig.assetsSeq) {
            requestedOverrideConfig.assetsSeq = ASSETS_SEQ_UNDEFINED;
        }
        super.resolveOverrideConfiguration(newParentConfiguration);
        final Configuration resolvedConfig = getResolvedOverrideConfiguration();
        if (isFixedRotationTransforming()) {
            // The resolved configuration is applied with rotated display configuration. If this
            // activity matches its parent (the following resolving procedures are no-op), then it
            // can use the resolved configuration directly. Otherwise (e.g. fixed aspect ratio),
            // the rotated configuration is used as parent configuration to compute the actual
            // resolved configuration. It is like putting the activity in a rotated container.
            mTmpConfig.setTo(newParentConfiguration);
            mTmpConfig.updateFrom(resolvedConfig);
            newParentConfiguration = mTmpConfig;
        }

        mIsAspectRatioApplied = false;

        // Can't use resolvedConfig.windowConfiguration.getWindowingMode() because it can be
        // different from windowing mode of the task (PiP) during transition from fullscreen to PiP
        // and back which can cause visible issues (see b/184078928).
        final int parentWindowingMode =
                newParentConfiguration.windowConfiguration.getWindowingMode();
        final boolean isFixedOrientationLetterboxAllowed =
                isSplitScreenWindowingMode(parentWindowingMode)
                        || parentWindowingMode == WINDOWING_MODE_MULTI_WINDOW
                        || parentWindowingMode == WINDOWING_MODE_FULLSCREEN;
        // TODO(b/181207944): Consider removing the if condition and always run
        // resolveFixedOrientationConfiguration() since this should be applied for all cases.
        if (isFixedOrientationLetterboxAllowed) {
            resolveFixedOrientationConfiguration(newParentConfiguration, parentWindowingMode);
        }

        if (mCompatDisplayInsets != null) {
            resolveSizeCompatModeConfiguration(newParentConfiguration);
        } else if (inMultiWindowMode() && !isFixedOrientationLetterboxAllowed) {
            // We ignore activities' requested orientation in multi-window modes. They may be
            // taken into consideration in resolveFixedOrientationConfiguration call above.
            resolvedConfig.orientation = Configuration.ORIENTATION_UNDEFINED;
            // If the activity has requested override bounds, the configuration needs to be
            // computed accordingly.
            if (!matchParentBounds()) {
                task.computeConfigResourceOverrides(resolvedConfig, newParentConfiguration);
            }
        // If activity in fullscreen mode is letterboxed because of fixed orientation then bounds
        // are already calculated in resolveFixedOrientationConfiguration.
        } else if (!isLetterboxedForFixedOrientationAndAspectRatio()) {
            resolveAspectRatioRestriction(newParentConfiguration);
        }

        if (isFixedOrientationLetterboxAllowed || mCompatDisplayInsets != null
                // In fullscreen, can be letterboxed for aspect ratio.
                || !inMultiWindowMode()) {
            updateResolvedBoundsHorizontalPosition(newParentConfiguration);
        }

        if (mVisibleRequested) {
            updateCompatDisplayInsets();
        }

        // Assign configuration sequence number into hierarchy because there is a different way than
        // ensureActivityConfiguration() in this class that uses configuration in WindowState during
        // layout traversals.
        mConfigurationSeq = Math.max(++mConfigurationSeq, 1);
        getResolvedOverrideConfiguration().seq = mConfigurationSeq;

        // Sandbox max bounds by setting it to the activity bounds, if activity is letterboxed, or
        // has or will have mCompatDisplayInsets for size compat. Also forces an activity to be
        // sandboxed or not depending upon the configuration settings.
        if (providesMaxBounds()) {
            mTmpBounds.set(resolvedConfig.windowConfiguration.getBounds());
            if (mTmpBounds.isEmpty()) {
                // When there is no override bounds, the activity will inherit the bounds from
                // parent.
                mTmpBounds.set(newParentConfiguration.windowConfiguration.getBounds());
            }
            if (DEBUG_CONFIGURATION) {
                ProtoLog.d(WM_DEBUG_CONFIGURATION, "Sandbox max bounds for uid %s to bounds %s. "
                                + "config to never sandbox = %s, "
                                + "config to always sandbox = %s, "
                                + "letterboxing from mismatch with parent bounds = %s, "
                                + "has mCompatDisplayInsets = %s, "
                                + "should create compatDisplayInsets = %s",
                        getUid(),
                        mTmpBounds,
                        info.neverSandboxDisplayApis(),
                        info.alwaysSandboxDisplayApis(),
                        !matchParentBounds(),
                        mCompatDisplayInsets != null,
                        shouldCreateCompatDisplayInsets());
            }
            resolvedConfig.windowConfiguration.setMaxBounds(mTmpBounds);
        }
    }

    /**
     * Returns whether activity bounds are letterboxed.
     *
     * <p>Note that letterbox UI may not be shown even when this returns {@code true}. See {@link
     * LetterboxUiController#shouldShowLetterboxUi} for more context.
     */
    boolean areBoundsLetterboxed() {
        if (mInSizeCompatModeForBounds) {
            return true;
        }
        // Letterbox for fixed orientation. This check returns true only when an activity is
        // letterboxed for fixed orientation. Aspect ratio restrictions are also applied if
        // present. But this doesn't return true when the activity is letterboxed only because
        // of aspect ratio restrictions.
        if (isLetterboxedForFixedOrientationAndAspectRatio()) {
            return true;
        }
        // Letterbox for limited aspect ratio.
        return mIsAspectRatioApplied;
    }

    /**
     * Adjusts horizontal position of resolved bounds if they doesn't fill the parent using gravity
     * requested in the config or via an ADB command. For more context see {@link
     * WindowManagerService#getLetterboxHorizontalPositionMultiplier}.
     */
    private void updateResolvedBoundsHorizontalPosition(Configuration newParentConfiguration) {
        final Configuration resolvedConfig = getResolvedOverrideConfiguration();
        final Rect resolvedBounds = resolvedConfig.windowConfiguration.getBounds();
        final Rect screenResolvedBounds =
                mSizeCompatBounds != null ? mSizeCompatBounds : resolvedBounds;
        final Rect parentAppBounds = newParentConfiguration.windowConfiguration.getAppBounds();
        final Rect parentBounds = newParentConfiguration.windowConfiguration.getBounds();
        if (resolvedBounds.isEmpty() || parentBounds.width() == screenResolvedBounds.width()) {
            return;
        }

        int offsetX = 0;
        if (screenResolvedBounds.width() >= parentAppBounds.width()) {
            // If resolved bounds overlap with insets, center within app bounds.
            offsetX = getHorizontalCenterOffset(
                    parentAppBounds.width(), screenResolvedBounds.width());
        } else {
            float positionMultiplier =
                    mWmService.mLetterboxConfiguration.getLetterboxHorizontalPositionMultiplier();
            positionMultiplier =
                    (positionMultiplier < 0.0f || positionMultiplier > 1.0f)
                            // Default to central position if invalid value is provided.
                            ? 0.5f : positionMultiplier;
            offsetX = (int) Math.ceil((parentAppBounds.width() - screenResolvedBounds.width())
                    * positionMultiplier);
        }

        if (mSizeCompatBounds != null) {
            mSizeCompatBounds.offset(offsetX, 0 /* offsetY */);
            final int dx = mSizeCompatBounds.left - resolvedBounds.left;
            offsetBounds(resolvedConfig, dx,  0 /* offsetY */);
        } else {
            offsetBounds(resolvedConfig, offsetX, 0 /* offsetY */);
        }

        // Since bounds has changed, the configuration needs to be computed accordingly.
        task.computeConfigResourceOverrides(resolvedConfig, newParentConfiguration);
    }

    /**
     * Whether this activity is letterboxed for fixed orientation. If letterboxed due to fixed
     * orientation then aspect ratio restrictions are also already respected.
     *
     * <p>This happens when an activity has fixed orientation which doesn't match orientation of the
     * parent because a display setting 'ignoreOrientationRequest' is set to true. See {@link
     * WindowManagerService#getIgnoreOrientationRequest} for more context.
     */
    boolean isLetterboxedForFixedOrientationAndAspectRatio() {
        return mLetterboxBoundsForFixedOrientationAndAspectRatio != null;
    }

    /**
     * Computes bounds (letterbox or pillarbox) when the parent doesn't handle the orientation
     * change and the requested orientation is different from the parent.
     *
     * <p>If letterboxed due to fixed orientation then aspect ratio restrictions are also applied
     * in this method.
     */
    private void resolveFixedOrientationConfiguration(@NonNull Configuration newParentConfig,
            int windowingMode) {
        mLetterboxBoundsForFixedOrientationAndAspectRatio = null;
        if (handlesOrientationChangeFromDescendant()) {
            // No need to letterbox because of fixed orientation. Display will handle
            // fixed-orientation requests.
            return;
        }
        if (WindowConfiguration.inMultiWindowMode(windowingMode) && isResizeable()) {
            // Ignore orientation request for resizable apps in multi window.
            return;
        }
        if (windowingMode == WINDOWING_MODE_PINNED) {
            // PiP bounds have higher priority than the requested orientation. Otherwise the
            // activity may be squeezed into a small piece.
            return;
        }

        final Rect resolvedBounds =
                getResolvedOverrideConfiguration().windowConfiguration.getBounds();
        final int parentOrientation = newParentConfig.orientation;

        // If the activity requires a different orientation (either by override or activityInfo),
        // make it fit the available bounds by scaling down its bounds.
        final int forcedOrientation = getRequestedConfigurationOrientation();
        if (forcedOrientation == ORIENTATION_UNDEFINED || forcedOrientation == parentOrientation) {
            return;
        }

        if (mCompatDisplayInsets != null && !mCompatDisplayInsets.mIsInFixedOrientationLetterbox) {
            // App prefers to keep its original size.
            // If the size compat is from previous fixed orientation letterboxing, we may want to
            // have fixed orientation letterbox again, otherwise it will show the size compat
            // restart button even if the restart bounds will be the same.
            return;
        }

        final Rect parentBounds = newParentConfig.windowConfiguration.getBounds();
        final Rect parentAppBounds = newParentConfig.windowConfiguration.getAppBounds();
        final Rect containingBounds = new Rect();
        final Rect containingAppBounds = new Rect();
        // Need to shrink the containing bounds into a square because the parent orientation does
        // not match the activity requested orientation.
        if (forcedOrientation == ORIENTATION_LANDSCAPE) {
            // Shrink height to match width. Position height within app bounds.
            final int bottom = Math.min(parentAppBounds.top + parentBounds.width(),
                    parentAppBounds.bottom);
            containingBounds.set(parentBounds.left, parentAppBounds.top, parentBounds.right,
                    bottom);
            containingAppBounds.set(parentAppBounds.left, parentAppBounds.top,
                    parentAppBounds.right, bottom);
        } else {
            // Shrink width to match height. Position width within app bounds.
            final int right = Math.min(parentAppBounds.left + parentBounds.height(),
                    parentAppBounds.right);
            containingBounds.set(parentAppBounds.left, parentBounds.top, right,
                    parentBounds.bottom);
            containingAppBounds.set(parentAppBounds.left, parentAppBounds.top, right,
                    parentAppBounds.bottom);
        }

        Rect mTmpFullBounds = new Rect(resolvedBounds);
        resolvedBounds.set(containingBounds);

        // Override from config_fixedOrientationLetterboxAspectRatio or via ADB with
        // set-fixed-orientation-letterbox-aspect-ratio.
        final float letterboxAspectRatioOverride =
                mWmService.mLetterboxConfiguration.getFixedOrientationLetterboxAspectRatio();
        final float desiredAspectRatio =
                letterboxAspectRatioOverride > MIN_FIXED_ORIENTATION_LETTERBOX_ASPECT_RATIO
                        ? letterboxAspectRatioOverride : computeAspectRatio(parentBounds);
        // Apply aspect ratio to resolved bounds
        mIsAspectRatioApplied = applyAspectRatio(resolvedBounds, containingAppBounds,
                containingBounds, desiredAspectRatio, true);

        // Vertically center if orientation is landscape. Bounds will later be horizontally centered
        // in {@link updateResolvedBoundsHorizontalPosition()} regardless of orientation.
        if (forcedOrientation == ORIENTATION_LANDSCAPE) {
            final int offsetY = parentBounds.centerY() - resolvedBounds.centerY();
            resolvedBounds.offset(0, offsetY);
        }

        if (mCompatDisplayInsets != null) {
            mCompatDisplayInsets.getBoundsByRotation(
                    mTmpBounds, newParentConfig.windowConfiguration.getRotation());
            if (resolvedBounds.width() != mTmpBounds.width()
                    || resolvedBounds.height() != mTmpBounds.height()) {
                // The app shouldn't be resized, we only do fixed orientation letterboxing if the
                // compat bounds are also from the same fixed orientation letterbox. Otherwise,
                // clear the fixed orientation bounds to show app in size compat mode.
                resolvedBounds.set(mTmpFullBounds);
                return;
            }
        }

        // Calculate app bounds using fixed orientation bounds because they will be needed later
        // for comparison with size compat app bounds in {@link resolveSizeCompatModeConfiguration}.
        task.computeConfigResourceOverrides(getResolvedOverrideConfiguration(), newParentConfig);
        mLetterboxBoundsForFixedOrientationAndAspectRatio = new Rect(resolvedBounds);
    }

    /**
     * Resolves aspect ratio restrictions for an activity. If the bounds are restricted by
     * aspect ratio, the position will be adjusted later in {@link
     * updateResolvedBoundsHorizontalPosition} within parent's app bounds to balance the visual
     * appearance. The policy of aspect ratio has higher priority than the requested override
     * bounds.
     */
    private void resolveAspectRatioRestriction(Configuration newParentConfiguration) {
        final Configuration resolvedConfig = getResolvedOverrideConfiguration();
        final Rect parentAppBounds = newParentConfiguration.windowConfiguration.getAppBounds();
        final Rect parentBounds = newParentConfiguration.windowConfiguration.getBounds();
        final Rect resolvedBounds = resolvedConfig.windowConfiguration.getBounds();
        // Use tmp bounds to calculate aspect ratio so we can know whether the activity should use
        // restricted size (resolved bounds may be the requested override bounds).
        mTmpBounds.setEmpty();
        mIsAspectRatioApplied = applyAspectRatio(mTmpBounds, parentAppBounds, parentBounds);
        // If the out bounds is not empty, it means the activity cannot fill parent's app bounds,
        // then they should be aligned later in #updateResolvedBoundsHorizontalPosition().
        if (!mTmpBounds.isEmpty()) {
            resolvedBounds.set(mTmpBounds);
        }
        if (!resolvedBounds.isEmpty() && !resolvedBounds.equals(parentBounds)) {
            // Compute the configuration based on the resolved bounds. If aspect ratio doesn't
            // restrict, the bounds should be the requested override bounds.
            task.computeConfigResourceOverrides(resolvedConfig, newParentConfiguration,
                    getFixedRotationTransformDisplayInfo());
        }
    }

    /**
     * Resolves consistent screen configuration for orientation and rotation changes without
     * inheriting the parent bounds.
     */
    private void resolveSizeCompatModeConfiguration(Configuration newParentConfiguration) {
        final Configuration resolvedConfig = getResolvedOverrideConfiguration();
        final Rect resolvedBounds = resolvedConfig.windowConfiguration.getBounds();

        // When an activity needs to be letterboxed because of fixed orientation, use fixed
        // orientation bounds (stored in resolved bounds) instead of parent bounds since the
        // activity will be displayed within them even if it is in size compat mode. They should be
        // saved here before resolved bounds are overridden below.
        final Rect containerBounds = isLetterboxedForFixedOrientationAndAspectRatio()
                ? new Rect(resolvedBounds)
                : newParentConfiguration.windowConfiguration.getBounds();
        final Rect containerAppBounds = isLetterboxedForFixedOrientationAndAspectRatio()
                ? new Rect(getResolvedOverrideConfiguration().windowConfiguration.getAppBounds())
                : newParentConfiguration.windowConfiguration.getAppBounds();

        final int requestedOrientation = getRequestedConfigurationOrientation();
        final boolean orientationRequested = requestedOrientation != ORIENTATION_UNDEFINED;
        final int orientation = orientationRequested
                ? requestedOrientation
                : newParentConfiguration.orientation;
        int rotation = newParentConfiguration.windowConfiguration.getRotation();
        final boolean isFixedToUserRotation = mDisplayContent == null
                || mDisplayContent.getDisplayRotation().isFixedToUserRotation();
        if (!isFixedToUserRotation && !mCompatDisplayInsets.mIsFloating) {
            // Use parent rotation because the original display can be rotated.
            resolvedConfig.windowConfiguration.setRotation(rotation);
        } else {
            final int overrideRotation = resolvedConfig.windowConfiguration.getRotation();
            if (overrideRotation != ROTATION_UNDEFINED) {
                rotation = overrideRotation;
            }
        }

        // Use compat insets to lock width and height. We should not use the parent width and height
        // because apps in compat mode should have a constant width and height. The compat insets
        // are locked when the app is first launched and are never changed after that, so we can
        // rely on them to contain the original and unchanging width and height of the app.
        final Rect containingAppBounds = new Rect();
        final Rect containingBounds = mTmpBounds;
        mCompatDisplayInsets.getContainerBounds(containingAppBounds, containingBounds, rotation,
                orientation, orientationRequested, isFixedToUserRotation);
        resolvedBounds.set(containingBounds);
        // The size of floating task is fixed (only swap), so the aspect ratio is already correct.
        if (!mCompatDisplayInsets.mIsFloating) {
            mIsAspectRatioApplied =
                    applyAspectRatio(resolvedBounds, containingAppBounds, containingBounds);
        }

        // Use resolvedBounds to compute other override configurations such as appBounds. The bounds
        // are calculated in compat container space. The actual position on screen will be applied
        // later, so the calculation is simpler that doesn't need to involve offset from parent.
        task.computeConfigResourceOverrides(resolvedConfig, newParentConfiguration,
                mCompatDisplayInsets);
        // Use current screen layout as source because the size of app is independent to parent.
        resolvedConfig.screenLayout = Task.computeScreenLayoutOverride(
                getConfiguration().screenLayout, resolvedConfig.screenWidthDp,
                resolvedConfig.screenHeightDp);

        // Use parent orientation if it cannot be decided by bounds, so the activity can fit inside
        // the parent bounds appropriately.
        if (resolvedConfig.screenWidthDp == resolvedConfig.screenHeightDp) {
            resolvedConfig.orientation = newParentConfiguration.orientation;
        }

        // Below figure is an example that puts an activity which was launched in a larger container
        // into a smaller container.
        //   The outermost rectangle is the real display bounds.
        //   "@" is the container app bounds (parent bounds or fixed orientation bouds)
        //   "#" is the {@code resolvedBounds} that applies to application.
        //   "*" is the {@code mSizeCompatBounds} that used to show on screen if scaled.
        // ------------------------------
        // |                            |
        // |    @@@@*********@@@@###    |
        // |    @   *       *   @  #    |
        // |    @   *       *   @  #    |
        // |    @   *       *   @  #    |
        // |    @@@@*********@@@@  #    |
        // ---------#--------------#-----
        //          #              #
        //          ################
        // The application is still layouted in "#" since it was launched, and it will be visually
        // scaled and positioned to "*".

        final Rect resolvedAppBounds = resolvedConfig.windowConfiguration.getAppBounds();

        // Calculates the scale the size compatibility bounds into the region which is available
        // to application.
        final int contentW = resolvedAppBounds.width();
        final int contentH = resolvedAppBounds.height();
        final int viewportW = containerAppBounds.width();
        final int viewportH = containerAppBounds.height();
        // Only allow to scale down.
        mSizeCompatScale = (contentW <= viewportW && contentH <= viewportH)
                ? 1f : Math.min((float) viewportW / contentW, (float) viewportH / contentH);
        final int containerTopInset = containerAppBounds.top - containerBounds.top;
        final boolean topNotAligned =
                containerTopInset != resolvedAppBounds.top - resolvedBounds.top;
        if (mSizeCompatScale != 1f || topNotAligned) {
            if (mSizeCompatBounds == null) {
                mSizeCompatBounds = new Rect();
            }
            mSizeCompatBounds.set(resolvedAppBounds);
            mSizeCompatBounds.offsetTo(0, 0);
            mSizeCompatBounds.scale(mSizeCompatScale);
            // The insets are included in height, e.g. the area of real cutout shouldn't be scaled.
            mSizeCompatBounds.bottom += containerTopInset;
        } else {
            mSizeCompatBounds = null;
        }

        // Align to top of parent (bounds) - this is a UX choice and exclude the horizontal decor
        // if needed. Horizontal position is adjusted in updateResolvedBoundsHorizontalPosition.
        // Above coordinates are in "@" space, now place "*" and "#" to screen space.
        final boolean fillContainer = resolvedBounds.equals(containingBounds);
        final int screenPosX = fillContainer ? containerBounds.left : containerAppBounds.left;
        final int screenPosY = containerBounds.top;
        if (screenPosX != 0 || screenPosY != 0) {
            if (mSizeCompatBounds != null) {
                mSizeCompatBounds.offset(screenPosX, screenPosY);
            }
            // Add the global coordinates and remove the local coordinates.
            final int dx = screenPosX - resolvedBounds.left;
            final int dy = screenPosY - resolvedBounds.top;
            offsetBounds(resolvedConfig, dx, dy);
        }

        mInSizeCompatModeForBounds =
                isInSizeCompatModeForBounds(resolvedAppBounds, containerAppBounds);
    }

    private boolean isInSizeCompatModeForBounds(final Rect appBounds, final Rect containerBounds) {
        final int appWidth = appBounds.width();
        final int appHeight = appBounds.height();
        final int containerAppWidth = containerBounds.width();
        final int containerAppHeight = containerBounds.height();

        if (containerAppWidth == appWidth && containerAppHeight == appHeight) {
            // Matched the container bounds.
            return false;
        }
        if (containerAppWidth > appWidth && containerAppHeight > appHeight) {
            // Both sides are smaller than the container.
            return true;
        }
        if (containerAppWidth < appWidth || containerAppHeight < appHeight) {
            // One side is larger than the container.
            return true;
        }

        // The rest of the condition is that only one side is smaller than the container, but it
        // still needs to exclude the cases where the size is limited by the fixed aspect ratio.
        if (info.getMaxAspectRatio() > 0) {
            final float aspectRatio = (0.5f + Math.max(appWidth, appHeight))
                    / Math.min(appWidth, appHeight);
            if (aspectRatio >= info.getMaxAspectRatio()) {
                // The current size has reached the max aspect ratio.
                return false;
            }
        }
        if (info.getMinAspectRatio() > 0) {
            // The activity should have at least the min aspect ratio, so this checks if the
            // container still has available space to provide larger aspect ratio.
            final float containerAspectRatio =
                    (0.5f + Math.max(containerAppWidth, containerAppHeight))
                            / Math.min(containerAppWidth, containerAppHeight);
            if (containerAspectRatio <= info.getMinAspectRatio()) {
                // The long side has reached the parent.
                return false;
            }
        }
        return true;
    }

    /** @return The horizontal offset of putting the content in the center of viewport. */
    private static int getHorizontalCenterOffset(int viewportW, int contentW) {
        return (int) ((viewportW - contentW + 1) * 0.5f);
    }

    private static void offsetBounds(Configuration inOutConfig, int offsetX, int offsetY) {
        inOutConfig.windowConfiguration.getBounds().offset(offsetX, offsetY);
        inOutConfig.windowConfiguration.getAppBounds().offset(offsetX, offsetY);
    }

    @Override
    public Rect getBounds() {
        if (mSizeCompatBounds != null) {
            return mSizeCompatBounds;
        }
        return super.getBounds();
    }

    @Override
    public boolean providesMaxBounds() {
        // System should always be able to access the DisplayArea bounds, so do not provide it with
        // compat max window bounds.
        if (getUid() == SYSTEM_UID) {
            return false;
        }
        // Never apply sandboxing to an app that should be explicitly excluded from the config.
        if (info != null && info.neverSandboxDisplayApis()) {
            return false;
        }
        // Always apply sandboxing to an app that should be explicitly included from the config.
        if (info != null && info.alwaysSandboxDisplayApis()) {
            return true;
        }
        // Max bounds should be sandboxed when an activity should have compatDisplayInsets, and it
        // will keep the same bounds and screen configuration when it was first launched regardless
        // how its parent window changes, so that the sandbox API will provide a consistent result.
        if (mCompatDisplayInsets != null || shouldCreateCompatDisplayInsets()) {
            return true;
        }

        // No need to sandbox for resizable apps in (including in multi-window) because
        // resizableActivity=true indicates that they support multi-window. Likewise, do not sandbox
        // for activities in letterbox since the activity has declared it can handle resizing.
        return false;
    }

    @VisibleForTesting
    @Override
    Rect getAnimationBounds(int appRootTaskClipMode) {
        if (appRootTaskClipMode == ROOT_TASK_CLIP_BEFORE_ANIM && getRootTask() != null) {
            // Using the root task bounds here effectively applies the clipping before animation.
            return getRootTask().getBounds();
        }
        // Use task-bounds if available so that activity-level letterbox (maxAspectRatio) is
        // included in the animation.
        return task != null ? task.getBounds() : getBounds();
    }

    @Override
    void getAnimationPosition(Point outPosition) {
        // Always animate from zero because if the activity doesn't fill the task, the letterbox
        // will fill the remaining area that should be included in the animation.
        outPosition.set(0, 0);
    }

    @Override
    public void onConfigurationChanged(Configuration newParentConfig) {
        if (mCompatDisplayInsets != null) {
            Configuration overrideConfig = getRequestedOverrideConfiguration();
            // Adapt to changes in orientation locking. The app is still non-resizable, but
            // it can change which orientation is fixed. If the fixed orientation changes,
            // update the rotation used on the "compat" display
            boolean wasFixedOrient =
                    overrideConfig.windowConfiguration.getRotation() != ROTATION_UNDEFINED;
            int requestedOrient = getRequestedConfigurationOrientation();
            if (requestedOrient != ORIENTATION_UNDEFINED
                    && requestedOrient != getConfiguration().orientation
                    // The task orientation depends on the top activity orientation, so it
                    // should match. If it doesn't, just wait until it does.
                    && requestedOrient == getParent().getConfiguration().orientation
                    && (overrideConfig.windowConfiguration.getRotation()
                            != getParent().getWindowConfiguration().getRotation())) {
                overrideConfig.windowConfiguration.setRotation(
                        getParent().getWindowConfiguration().getRotation());
                onRequestedOverrideConfigurationChanged(overrideConfig);
                return;
            } else if (wasFixedOrient && requestedOrient == ORIENTATION_UNDEFINED
                    && (overrideConfig.windowConfiguration.getRotation()
                            != ROTATION_UNDEFINED)) {
                overrideConfig.windowConfiguration.setRotation(ROTATION_UNDEFINED);
                onRequestedOverrideConfigurationChanged(overrideConfig);
                return;
            }
        }

        final boolean wasInPictureInPicture = inPinnedWindowingMode();
        final DisplayContent display = mDisplayContent;
        if (wasInPictureInPicture && attachedToProcess() && display != null) {
            // If the PIP activity is changing to fullscreen with display orientation change, the
            // fixed rotation will take effect that requires to send fixed rotation adjustments
            // before the process configuration (if the process is a configuration listener of the
            // activity). So when performing process configuration on client side, it can apply
            // the adjustments (see WindowToken#onFixedRotationStatePrepared).
            try {
                app.pauseConfigurationDispatch();
                super.onConfigurationChanged(newParentConfig);
                if (mVisibleRequested && !inMultiWindowMode()) {
                    final int rotation = display.rotationForActivityInDifferentOrientation(this);
                    if (rotation != ROTATION_UNDEFINED) {
                        app.resumeConfigurationDispatch();
                        display.setFixedRotationLaunchingApp(this, rotation);
                    }
                }
            } finally {
                if (app.resumeConfigurationDispatch()) {
                    app.dispatchConfiguration(app.getConfiguration());
                }
            }
        } else {
            super.onConfigurationChanged(newParentConfig);
        }

        // Configuration's equality doesn't consider seq so if only seq number changes in resolved
        // override configuration. Therefore ConfigurationContainer doesn't change merged override
        // configuration, but it's used to push configuration changes so explicitly update that.
        if (getMergedOverrideConfiguration().seq != getResolvedOverrideConfiguration().seq) {
            onMergedOverrideConfigurationChanged();
        }

        // Before PiP animation is done, th windowing mode of the activity is still the previous
        // mode (see RootWindowContainer#moveActivityToPinnedRootTask). So once the windowing mode
        // of activity is changed, it is the signal of the last step to update the PiP states.
        if (!wasInPictureInPicture && inPinnedWindowingMode() && task != null) {
            mWaitForEnteringPinnedMode = false;
            mTaskSupervisor.scheduleUpdatePictureInPictureModeIfNeeded(task, task.getBounds());
        }

        if (display == null) {
            return;
        }
        if (mVisibleRequested) {
            // It may toggle the UI for user to restart the size compatibility mode activity.
            display.handleActivitySizeCompatModeIfNeeded(this);
        } else if (mCompatDisplayInsets != null && !visibleIgnoringKeyguard) {
            // visibleIgnoringKeyguard is checked to avoid clearing mCompatDisplayInsets during
            // displays change. Displays are turned off during the change so mVisibleRequested
            // can be false.
            // The override changes can only be obtained from display, because we don't have the
            // difference of full configuration in each hierarchy.
            final int displayChanges = display.getCurrentOverrideConfigurationChanges();
            final int orientationChanges = CONFIG_WINDOW_CONFIGURATION
                    | CONFIG_SCREEN_SIZE | CONFIG_ORIENTATION;
            final boolean hasNonOrienSizeChanged = hasResizeChange(displayChanges)
                    // Filter out the case of simple orientation change.
                    && (displayChanges & orientationChanges) != orientationChanges;
            // For background activity that uses size compatibility mode, if the size or density of
            // the display is changed, then reset the override configuration and kill the activity's
            // process if its process state is not important to user.
            if (hasNonOrienSizeChanged || (displayChanges & ActivityInfo.CONFIG_DENSITY) != 0) {
                restartProcessIfVisible();
            }
        }
    }

    @Override
    void onResize() {
        // Reset freezing IME insets flag when the activity resized.
        mImeInsetsFrozenUntilStartInput = false;
        super.onResize();
    }

    /** Returns true if the configuration is compatible with this activity. */
    boolean isConfigurationCompatible(Configuration config) {
        final int orientation = getRequestedOrientation();
        if (isFixedOrientationPortrait(orientation)
                && config.orientation != ORIENTATION_PORTRAIT) {
            return false;
        }
        if (isFixedOrientationLandscape(orientation)
                && config.orientation != ORIENTATION_LANDSCAPE) {
            return false;
        }
        return true;
    }

    private boolean applyAspectRatio(Rect outBounds, Rect containingAppBounds,
            Rect containingBounds) {
        return applyAspectRatio(outBounds, containingAppBounds, containingBounds,
                0 /* desiredAspectRatio */, false /* fixedOrientationLetterboxed */);
    }

    /**
     * Applies aspect ratio restrictions to outBounds. If no restrictions, then no change is
     * made to outBounds.
     *
     * @return {@code true} if aspect ratio restrictions were applied.
     */
    // TODO(b/36505427): Consider moving this method and similar ones to ConfigurationContainer.
    private boolean applyAspectRatio(Rect outBounds, Rect containingAppBounds,
            Rect containingBounds, float desiredAspectRatio, boolean fixedOrientationLetterboxed) {
        final float maxAspectRatio = info.getMaxAspectRatio();
        final Task rootTask = getRootTask();
        final float minAspectRatio = info.getMinAspectRatio();

        if (task == null || rootTask == null
                || (inMultiWindowMode() && !shouldCreateCompatDisplayInsets()
                    && !fixedOrientationLetterboxed)
                || (maxAspectRatio < 1 && minAspectRatio < 1 && desiredAspectRatio < 1)
                || isInVrUiMode(getConfiguration())) {
            // We don't enforce aspect ratio if the activity task is in multiwindow unless it is in
            // size-compat mode or is letterboxed from fixed orientation. We also don't set it if we
            // are in VR mode.
            return false;
        }

        final int containingAppWidth = containingAppBounds.width();
        final int containingAppHeight = containingAppBounds.height();
        final float containingRatio = computeAspectRatio(containingAppBounds);

        if (desiredAspectRatio < 1) {
            desiredAspectRatio = containingRatio;
        }

        if (maxAspectRatio >= 1 && desiredAspectRatio > maxAspectRatio) {
            desiredAspectRatio = maxAspectRatio;
        } else if (minAspectRatio >= 1 && desiredAspectRatio < minAspectRatio) {
            desiredAspectRatio = minAspectRatio;
        }

        int activityWidth = containingAppWidth;
        int activityHeight = containingAppHeight;

        if (containingRatio > desiredAspectRatio) {
            if (containingAppWidth < containingAppHeight) {
                // Width is the shorter side, so we use that to figure-out what the max. height
                // should be given the aspect ratio.
                activityHeight = (int) ((activityWidth * desiredAspectRatio) + 0.5f);
            } else {
                // Height is the shorter side, so we use that to figure-out what the max. width
                // should be given the aspect ratio.
                activityWidth = (int) ((activityHeight * desiredAspectRatio) + 0.5f);
            }
        } else if (containingRatio < desiredAspectRatio) {
            boolean adjustWidth;
            switch (getRequestedConfigurationOrientation()) {
                case ORIENTATION_LANDSCAPE:
                    // Width should be the longer side for this landscape app, so we use the width
                    // to figure-out what the max. height should be given the aspect ratio.
                    adjustWidth = false;
                    break;
                case ORIENTATION_PORTRAIT:
                    // Height should be the longer side for this portrait app, so we use the height
                    // to figure-out what the max. width should be given the aspect ratio.
                    adjustWidth = true;
                    break;
                default:
                    // This app doesn't have a preferred orientation, so we keep the length of the
                    // longer side, and use it to figure-out the length of the shorter side.
                    if (containingAppWidth < containingAppHeight) {
                        // Width is the shorter side, so we use the height to figure-out what the
                        // max. width should be given the aspect ratio.
                        adjustWidth = true;
                    } else {
                        // Height is the shorter side, so we use the width to figure-out what the
                        // max. height should be given the aspect ratio.
                        adjustWidth = false;
                    }
                    break;
            }
            if (adjustWidth) {
                activityWidth = (int) ((activityHeight / desiredAspectRatio) + 0.5f);
            } else {
                activityHeight = (int) ((activityWidth / desiredAspectRatio) + 0.5f);
            }
        }

        if (containingAppWidth <= activityWidth && containingAppHeight <= activityHeight) {
            // The display matches or is less than the activity aspect ratio, so nothing else to do.
            return false;
        }

        // Compute configuration based on max or min supported width and height.
        // Also account for the insets (e.g. display cutouts, navigation bar), which will be
        // clipped away later in {@link Task#computeConfigResourceOverrides()}, i.e., the out
        // bounds are the app bounds restricted by aspect ratio + clippable insets. Otherwise,
        // the app bounds would end up too small.
        int right = activityWidth + containingAppBounds.left;
        if (right >= containingAppBounds.right) {
            right += containingBounds.right - containingAppBounds.right;
        }
        int bottom = activityHeight + containingAppBounds.top;
        if (bottom >= containingAppBounds.bottom) {
            bottom += containingBounds.bottom - containingAppBounds.bottom;
        }
        outBounds.set(containingBounds.left, containingBounds.top, right, bottom);

        // If the bounds are restricted by fixed aspect ratio, then out bounds should be put in the
        // container app bounds. Otherwise the entire container bounds are available.
        if (!outBounds.equals(containingBounds)) {
            // The horizontal position should not cover insets.
            outBounds.left = containingAppBounds.left;
        }

        return true;
    }

    /**
     * Returns the aspect ratio of the given {@code rect}.
     */
    static float computeAspectRatio(Rect rect) {
        final int width = rect.width();
        final int height = rect.height();
        if (width == 0 || height == 0) {
            return 0;
        }
        return Math.max(width, height) / (float) Math.min(width, height);
    }

    /**
     * @return {@code true} if this activity was reparented to another display but
     *         {@link #ensureActivityConfiguration} is not called.
     */
    boolean shouldUpdateConfigForDisplayChanged() {
        return mLastReportedDisplayId != getDisplayId();
    }

    boolean ensureActivityConfiguration(int globalChanges, boolean preserveWindow) {
        return ensureActivityConfiguration(globalChanges, preserveWindow,
                false /* ignoreVisibility */);
    }

    /**
     * Make sure the given activity matches the current configuration. Ensures the HistoryRecord
     * is updated with the correct configuration and all other bookkeeping is handled.
     *
     * @param globalChanges The changes to the global configuration.
     * @param preserveWindow If the activity window should be preserved on screen if the activity
     *                       is relaunched.
     * @param ignoreVisibility If we should try to relaunch the activity even if it is invisible
     *                         (stopped state). This is useful for the case where we know the
     *                         activity will be visible soon and we want to ensure its configuration
     *                         before we make it visible.
     * @return False if the activity was relaunched and true if it wasn't relaunched because we
     *         can't or the app handles the specific configuration that is changing.
     */
    boolean ensureActivityConfiguration(int globalChanges, boolean preserveWindow,
            boolean ignoreVisibility) {
        final Task rootTask = getRootTask();
        if (rootTask.mConfigWillChange) {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Skipping config check "
                    + "(will change): %s", this);
            return true;
        }

        // We don't worry about activities that are finishing.
        if (finishing) {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Configuration doesn't matter "
                    + "in finishing %s", this);
            stopFreezingScreenLocked(false);
            return true;
        }

        if (isState(DESTROYED)) {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Skipping config check "
                    + "in destroyed state %s", this);
            return true;
        }

        if (!ignoreVisibility && (mState == STOPPING || mState == STOPPED || !shouldBeVisible())) {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Skipping config check "
                    + "invisible: %s", this);
            return true;
        }

        ProtoLog.v(WM_DEBUG_CONFIGURATION, "Ensuring correct "
                + "configuration: %s", this);

        final int newDisplayId = getDisplayId();
        final boolean displayChanged = mLastReportedDisplayId != newDisplayId;
        if (displayChanged) {
            mLastReportedDisplayId = newDisplayId;
        }

        // Short circuit: if the two full configurations are equal (the common case), then there is
        // nothing to do.  We test the full configuration instead of the global and merged override
        // configurations because there are cases (like moving a task to the root pinned task) where
        // the combine configurations are equal, but would otherwise differ in the override config
        mTmpConfig.setTo(mLastReportedConfiguration.getMergedConfiguration());
        if (getConfiguration().equals(mTmpConfig) && !forceNewConfig && !displayChanged) {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Configuration & display "
                    + "unchanged in %s", this);
            // It's possible that resolveOverrideConfiguration was called before mVisibleRequested
            // became true and mCompatDisplayInsets may not have been created so ensure
            // that mCompatDisplayInsets is created here.
            if (mVisibleRequested) {
                updateCompatDisplayInsets();
            }
            return true;
        }

        // Okay we now are going to make this activity have the new config.
        // But then we need to figure out how it needs to deal with that.

        // Find changes between last reported merged configuration and the current one. This is used
        // to decide whether to relaunch an activity or just report a configuration change.
        final int changes = getConfigurationChanges(mTmpConfig);

        // Update last reported values.
        final Configuration newMergedOverrideConfig = getMergedOverrideConfiguration();

        setLastReportedConfiguration(getProcessGlobalConfiguration(), newMergedOverrideConfig);

        if (mState == INITIALIZING) {
            // No need to relaunch or schedule new config for activity that hasn't been launched
            // yet. We do, however, return after applying the config to activity record, so that
            // it will use it for launch transaction.
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Skipping config check for "
                    + "initializing activity: %s", this);
            return true;
        }

        if (changes == 0 && !forceNewConfig) {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Configuration no differences in %s",
                    this);
            // There are no significant differences, so we won't relaunch but should still deliver
            // the new configuration to the client process.
            if (displayChanged) {
                scheduleActivityMovedToDisplay(newDisplayId, newMergedOverrideConfig);
            } else {
                scheduleConfigurationChanged(newMergedOverrideConfig);
            }
            return true;
        }

        ProtoLog.v(WM_DEBUG_CONFIGURATION, "Configuration changes for %s, "
                + "allChanges=%s", this, Configuration.configurationDiffToString(changes));

        // If the activity isn't currently running, just leave the new configuration and it will
        // pick that up next time it starts.
        if (!attachedToProcess()) {
            ProtoLog.v(WM_DEBUG_CONFIGURATION, "Configuration doesn't matter not running %s", this);
            stopFreezingScreenLocked(false);
            forceNewConfig = false;
            return true;
        }

        // Figure out how to handle the changes between the configurations.
        ProtoLog.v(WM_DEBUG_CONFIGURATION, "Checking to restart %s: changed=0x%s, "
                + "handles=0x%s, mLastReportedConfiguration=%s", info.name,
                Integer.toHexString(changes), Integer.toHexString(info.getRealConfigChanged()),
                mLastReportedConfiguration);

        if (shouldRelaunchLocked(changes, mTmpConfig) || forceNewConfig) {
            // Aha, the activity isn't handling the change, so DIE DIE DIE.
            configChangeFlags |= changes;
            startFreezingScreenLocked(globalChanges);
            forceNewConfig = false;
            preserveWindow &= isResizeOnlyChange(changes);
            final boolean hasResizeChange = hasResizeChange(changes & ~info.getRealConfigChanged());
            if (hasResizeChange) {
                final boolean isDragResizing = task.isDragResizing();
                mRelaunchReason = isDragResizing ? RELAUNCH_REASON_FREE_RESIZE
                        : RELAUNCH_REASON_WINDOWING_MODE_RESIZE;
            } else {
                mRelaunchReason = RELAUNCH_REASON_NONE;
            }
            if (mState == PAUSING) {
                // A little annoying: we are waiting for this activity to finish pausing. Let's not
                // do anything now, but just flag that it needs to be restarted when done pausing.
                ProtoLog.v(WM_DEBUG_CONFIGURATION,
                        "Config is skipping already pausing %s", this);
                deferRelaunchUntilPaused = true;
                preserveWindowOnDeferredRelaunch = preserveWindow;
                return true;
            } else {
                ProtoLog.v(WM_DEBUG_CONFIGURATION, "Config is relaunching %s",
                        this);
                if (!mVisibleRequested) {
                    ProtoLog.v(WM_DEBUG_STATES, "Config is relaunching invisible "
                            + "activity %s called by %s", this, Debug.getCallers(4));
                }
                relaunchActivityLocked(preserveWindow);
            }

            // All done...  tell the caller we weren't able to keep this activity around.
            return false;
        }

        // Default case: the activity can handle this new configuration, so hand it over.
        // NOTE: We only forward the override configuration as the system level configuration
        // changes is always sent to all processes when they happen so it can just use whatever
        // system level configuration it last got.
        if (displayChanged) {
            scheduleActivityMovedToDisplay(newDisplayId, newMergedOverrideConfig);
        } else {
            scheduleConfigurationChanged(newMergedOverrideConfig);
        }
        stopFreezingScreenLocked(false);

        return true;
    }

    /** Get process configuration, or global config if the process is not set. */
    private Configuration getProcessGlobalConfiguration() {
        return app != null ? app.getConfiguration() : mAtmService.getGlobalConfiguration();
    }

    /**
     * When assessing a configuration change, decide if the changes flags and the new configurations
     * should cause the Activity to relaunch.
     *
     * @param changes the changes due to the given configuration.
     * @param changesConfig the configuration that was used to calculate the given changes via a
     *        call to getConfigurationChanges.
     */
    private boolean shouldRelaunchLocked(int changes, Configuration changesConfig) {
        int configChanged = info.getRealConfigChanged();
        boolean onlyVrUiModeChanged = onlyVrUiModeChanged(changes, changesConfig);

        // Override for apps targeting pre-O sdks
        // If a device is in VR mode, and we're transitioning into VR ui mode, add ignore ui mode
        // to the config change.
        // For O and later, apps will be required to add configChanges="uimode" to their manifest.
        if (info.applicationInfo.targetSdkVersion < O
                && requestedVrComponent != null
                && onlyVrUiModeChanged) {
            configChanged |= CONFIG_UI_MODE;
        }

        return (changes&(~configChanged)) != 0;
    }

    /**
     * Returns true if the configuration change is solely due to the UI mode switching into or out
     * of UI_MODE_TYPE_VR_HEADSET.
     */
    private boolean onlyVrUiModeChanged(int changes, Configuration lastReportedConfig) {
        final Configuration currentConfig = getConfiguration();
        return changes == CONFIG_UI_MODE && (isInVrUiMode(currentConfig)
            != isInVrUiMode(lastReportedConfig));
    }

    private int getConfigurationChanges(Configuration lastReportedConfig) {
        // Determine what has changed.  May be nothing, if this is a config that has come back from
        // the app after going idle.  In that case we just want to leave the official config object
        // now in the activity and do nothing else.
        int changes = lastReportedConfig.diff(getConfiguration());
        changes = SizeConfigurationBuckets.filterDiff(
                    changes, lastReportedConfig, getConfiguration(), mSizeConfigurations);
        // We don't want window configuration to cause relaunches.
        if ((changes & CONFIG_WINDOW_CONFIGURATION) != 0) {
            changes &= ~CONFIG_WINDOW_CONFIGURATION;
        }

        return changes;
    }

    private static boolean isResizeOnlyChange(int change) {
        return (change & ~(CONFIG_SCREEN_SIZE | CONFIG_SMALLEST_SCREEN_SIZE | CONFIG_ORIENTATION
                | CONFIG_SCREEN_LAYOUT)) == 0;
    }

    private static boolean hasResizeChange(int change) {
        return (change & (CONFIG_SCREEN_SIZE | CONFIG_SMALLEST_SCREEN_SIZE | CONFIG_ORIENTATION
                | CONFIG_SCREEN_LAYOUT)) != 0;
    }

    void relaunchActivityLocked(boolean preserveWindow) {
        if (mAtmService.mSuppressResizeConfigChanges && preserveWindow) {
            configChangeFlags = 0;
            return;
        }
        // Do not waiting for translucent activity if it is going to relaunch.
        final Task rootTask = getRootTask();
        if (rootTask != null && rootTask.mTranslucentActivityWaiting == this) {
            rootTask.checkTranslucentActivityWaiting(null);
        }
        final boolean andResume = shouldBeResumed(null /*activeActivity*/);
        List<ResultInfo> pendingResults = null;
        List<ReferrerIntent> pendingNewIntents = null;
        if (andResume) {
            pendingResults = results;
            pendingNewIntents = newIntents;
        }
        if (DEBUG_SWITCH) Slog.v(TAG_SWITCH,
                "Relaunching: " + this + " with results=" + pendingResults
                        + " newIntents=" + pendingNewIntents + " andResume=" + andResume
                        + " preserveWindow=" + preserveWindow);
        if (andResume) {
            EventLogTags.writeWmRelaunchResumeActivity(mUserId, System.identityHashCode(this),
                    task.mTaskId, shortComponentName);
        } else {
            EventLogTags.writeWmRelaunchActivity(mUserId, System.identityHashCode(this),
                    task.mTaskId, shortComponentName);
        }

        startFreezingScreenLocked(0);

        try {
            ProtoLog.i(WM_DEBUG_STATES, "Moving to %s Relaunching %s callers=%s" ,
                    (andResume ? "RESUMED" : "PAUSED"), this, Debug.getCallers(6));
            forceNewConfig = false;
            startRelaunching();
            final ClientTransactionItem callbackItem = ActivityRelaunchItem.obtain(pendingResults,
                    pendingNewIntents, configChangeFlags,
                    new MergedConfiguration(getProcessGlobalConfiguration(),
                            getMergedOverrideConfiguration()),
                    preserveWindow);
            final ActivityLifecycleItem lifecycleItem;
            if (andResume) {
                lifecycleItem = ResumeActivityItem.obtain(isTransitionForward());
            } else {
                lifecycleItem = PauseActivityItem.obtain();
            }
            final ClientTransaction transaction = ClientTransaction.obtain(app.getThread(), appToken);
            transaction.addCallback(callbackItem);
            transaction.setLifecycleStateRequest(lifecycleItem);
            mAtmService.getLifecycleManager().scheduleTransaction(transaction);
            // Note: don't need to call pauseIfSleepingLocked() here, because the caller will only
            // request resume if this activity is currently resumed, which implies we aren't
            // sleeping.
        } catch (RemoteException e) {
            ProtoLog.i(WM_DEBUG_STATES, "Relaunch failed %s", e);
        }

        if (andResume) {
            ProtoLog.d(WM_DEBUG_STATES, "Resumed after relaunch %s", this);
            results = null;
            newIntents = null;
            mAtmService.getAppWarningsLocked().onResumeActivity(this);
        } else {
            removePauseTimeout();
            setState(PAUSED, "relaunchActivityLocked");
        }

        // The activity may be waiting for stop, but that is no longer appropriate for it.
        mTaskSupervisor.mStoppingActivities.remove(this);

        configChangeFlags = 0;
        deferRelaunchUntilPaused = false;
        preserveWindowOnDeferredRelaunch = false;
    }

    /**
     * Request the process of the activity to restart with its saved state (from
     * {@link android.app.Activity#onSaveInstanceState}) if possible. It also forces to recompute
     * the override configuration. Note if the activity is in background, the process will be killed
     * directly with keeping its record.
     */
    void restartProcessIfVisible() {
        Slog.i(TAG, "Request to restart process of " + this);

        // Reset the existing override configuration so it can be updated according to the latest
        // configuration.
        clearSizeCompatMode();

        if (!attachedToProcess()) {
            return;
        }

        // The restarting state avoids removing this record when process is died.
        setState(RESTARTING_PROCESS, "restartActivityProcess");

        if (!mVisibleRequested || mHaveState) {
            // Kill its process immediately because the activity should be in background.
            // The activity state will be update to {@link #DESTROYED} in
            // {@link ActivityStack#cleanUp} when handling process died.
            mAtmService.mH.post(() -> {
                final WindowProcessController wpc;
                synchronized (mAtmService.mGlobalLock) {
                    if (!hasProcess()
                            || app.getReportedProcState() <= PROCESS_STATE_IMPORTANT_FOREGROUND) {
                        return;
                    }
                    wpc = app;
                }
                mAtmService.mAmInternal.killProcess(wpc.mName, wpc.mUid, "resetConfig");
            });
            return;
        }

        if (getParent() != null) {
            startFreezingScreen();
        }
        // The process will be killed until the activity reports stopped with saved state (see
        // {@link ActivityTaskManagerService.activityStopped}).
        try {
            mAtmService.getLifecycleManager().scheduleTransaction(app.getThread(), appToken,
                    StopActivityItem.obtain(0 /* configChanges */));
        } catch (RemoteException e) {
            Slog.w(TAG, "Exception thrown during restart " + this, e);
        }
        mTaskSupervisor.scheduleRestartTimeout(this);
    }

    boolean isProcessRunning() {
        WindowProcessController proc = app;
        if (proc == null) {
            proc = mAtmService.mProcessNames.get(processName, info.applicationInfo.uid);
        }
        return proc != null && proc.hasThread();
    }

    /**
     * @return Whether a task snapshot starting window may be shown.
     */
    private boolean allowTaskSnapshot() {
        if (newIntents == null) {
            return true;
        }

        // Restrict task snapshot starting window to launcher start, or is same as the last
        // delivered intent, or there is no intent at all (eg. task being brought to front). If
        // the intent is something else, likely the app is going to show some specific page or
        // view, instead of what's left last time.
        for (int i = newIntents.size() - 1; i >= 0; i--) {
            final Intent intent = newIntents.get(i);
            if (intent == null || ActivityRecord.isMainIntent(intent)) {
                continue;
            }

            final boolean sameIntent = mLastNewIntent != null ? mLastNewIntent.filterEquals(intent)
                    : this.intent.filterEquals(intent);
            if (!sameIntent || intent.getExtras() != null) {
                return false;
            }
        }
        return true;
    }

    /**
     * Returns {@code true} if the associated activity has the no history flag set on it.
     * {@code false} otherwise.
     */
    boolean isNoHistory() {
        return (intent.getFlags() & FLAG_ACTIVITY_NO_HISTORY) != 0
                || (info.flags & FLAG_NO_HISTORY) != 0;
    }

    void saveToXml(TypedXmlSerializer out) throws IOException, XmlPullParserException {
        out.attributeLong(null, ATTR_ID, createTime);
        out.attributeInt(null, ATTR_LAUNCHEDFROMUID, launchedFromUid);
        if (launchedFromPackage != null) {
            out.attribute(null, ATTR_LAUNCHEDFROMPACKAGE, launchedFromPackage);
        }
        if (launchedFromFeatureId != null) {
            out.attribute(null, ATTR_LAUNCHEDFROMFEATURE, launchedFromFeatureId);
        }
        if (resolvedType != null) {
            out.attribute(null, ATTR_RESOLVEDTYPE, resolvedType);
        }
        out.attributeBoolean(null, ATTR_COMPONENTSPECIFIED, componentSpecified);
        out.attributeInt(null, ATTR_USERID, mUserId);

        if (taskDescription != null) {
            taskDescription.saveToXml(out);
        }

        out.startTag(null, TAG_INTENT);
        intent.saveToXml(out);
        out.endTag(null, TAG_INTENT);

        if (isPersistable() && mPersistentState != null) {
            out.startTag(null, TAG_PERSISTABLEBUNDLE);
            mPersistentState.saveToXml(out);
            out.endTag(null, TAG_PERSISTABLEBUNDLE);
        }
    }

    static ActivityRecord restoreFromXml(TypedXmlPullParser in,
            ActivityTaskSupervisor taskSupervisor) throws IOException, XmlPullParserException {
        Intent intent = null;
        PersistableBundle persistentState = null;
        int launchedFromUid = in.getAttributeInt(null, ATTR_LAUNCHEDFROMUID, 0);
        String launchedFromPackage = in.getAttributeValue(null, ATTR_LAUNCHEDFROMPACKAGE);
        String launchedFromFeature = in.getAttributeValue(null, ATTR_LAUNCHEDFROMFEATURE);
        String resolvedType = in.getAttributeValue(null, ATTR_RESOLVEDTYPE);
        boolean componentSpecified = in.getAttributeBoolean(null, ATTR_COMPONENTSPECIFIED, false);
        int userId = in.getAttributeInt(null, ATTR_USERID, 0);
        long createTime = in.getAttributeLong(null, ATTR_ID, -1);
        final int outerDepth = in.getDepth();

        TaskDescription taskDescription = new TaskDescription();
        taskDescription.restoreFromXml(in);

        int event;
        while (((event = in.next()) != END_DOCUMENT) &&
                (event != END_TAG || in.getDepth() >= outerDepth)) {
            if (event == START_TAG) {
                final String name = in.getName();
                if (DEBUG)
                        Slog.d(TaskPersister.TAG, "ActivityRecord: START_TAG name=" + name);
                if (TAG_INTENT.equals(name)) {
                    intent = Intent.restoreFromXml(in);
                    if (DEBUG)
                            Slog.d(TaskPersister.TAG, "ActivityRecord: intent=" + intent);
                } else if (TAG_PERSISTABLEBUNDLE.equals(name)) {
                    persistentState = PersistableBundle.restoreFromXml(in);
                    if (DEBUG) Slog.d(TaskPersister.TAG,
                            "ActivityRecord: persistentState=" + persistentState);
                } else {
                    Slog.w(TAG, "restoreActivity: unexpected name=" + name);
                    XmlUtils.skipCurrentTag(in);
                }
            }
        }

        if (intent == null) {
            throw new XmlPullParserException("restoreActivity error intent=" + intent);
        }

        final ActivityTaskManagerService service = taskSupervisor.mService;
        final ActivityInfo aInfo = taskSupervisor.resolveActivity(intent, resolvedType, 0, null,
                userId, Binder.getCallingUid());
        if (aInfo == null) {
            throw new XmlPullParserException("restoreActivity resolver error. Intent=" + intent +
                    " resolvedType=" + resolvedType);
        }
        return new ActivityRecord.Builder(service)
                .setLaunchedFromUid(launchedFromUid)
                .setLaunchedFromPackage(launchedFromPackage)
                .setLaunchedFromFeature(launchedFromFeature)
                .setIntent(intent)
                .setResolvedType(resolvedType)
                .setActivityInfo(aInfo)
                .setComponentSpecified(componentSpecified)
                .setPersistentState(persistentState)
                .setTaskDescription(taskDescription)
                .setCreateTime(createTime)
                .build();
    }

    private static boolean isInVrUiMode(Configuration config) {
        return (config.uiMode & UI_MODE_TYPE_MASK) == UI_MODE_TYPE_VR_HEADSET;
    }

    String getProcessName() {
        return info.applicationInfo.processName;
    }

    int getUid() {
        return info.applicationInfo.uid;
    }

    boolean isUid(int uid) {
        return info.applicationInfo.uid == uid;
    }

    int getPid() {
        return app != null ? app.getPid() : 0;
    }

    int getLaunchedFromPid() {
        return launchedFromPid;
    }

    int getLaunchedFromUid() {
        return launchedFromUid;
    }

    /**
     * Determines whether this ActivityRecord can turn the screen on. It checks whether the flag
     * {@link ActivityRecord#getTurnScreenOnFlag} is set and checks whether the ActivityRecord
     * should be visible depending on Keyguard state.
     *
     * @return true if the screen can be turned on, false otherwise.
     */
    boolean canTurnScreenOn() {
        if (!getTurnScreenOnFlag()) {
            return false;
        }
        final Task rootTask = getRootTask();
        return mCurrentLaunchCanTurnScreenOn && rootTask != null
                && mTaskSupervisor.getKeyguardController().checkKeyguardVisibility(this);
    }

    void setTurnScreenOn(boolean turnScreenOn) {
        mTurnScreenOn = turnScreenOn;
    }

    boolean getTurnScreenOnFlag() {
        return mTurnScreenOn || containsTurnScreenOnWindow();
    }

    private boolean containsTurnScreenOnWindow() {
        // When we are relaunching, it is possible for us to be unfrozen before our previous
        // windows have been added back. Using the cached value ensures that our previous
        // showWhenLocked preference is honored until relaunching is complete.
        if (isRelaunching()) {
            return mLastContainsTurnScreenOnWindow;
        }
        for (int i = mChildren.size() - 1; i >= 0; i--) {
            if ((mChildren.get(i).mAttrs.flags & LayoutParams.FLAG_TURN_SCREEN_ON) != 0) {
                return true;
            }
        }
        return false;
    }

    /**
     * Check if this activity is able to resume. For pre-Q apps, only the topmost activities of each
     * process are allowed to be resumed.
     *
     * @return true if this activity can be resumed.
     */
    boolean canResumeByCompat() {
        return app == null || app.updateTopResumingActivityInProcessIfNeeded(this);
    }

    boolean isTopRunningActivity() {
        return mRootWindowContainer.topRunningActivity() == this;
    }

    /**
     * @return {@code true} if this is the focused activity on its current display, {@code false}
     * otherwise.
     */
    boolean isFocusedActivityOnDisplay() {
        return mDisplayContent.forAllTaskDisplayAreas(taskDisplayArea ->
                taskDisplayArea.getFocusedActivity() == this);
    }


    /**
     * Check if this is the root of the task - first activity that is not finishing, starting from
     * the bottom of the task. If all activities are finishing - then this method will return
     * {@code true} if the activity is at the bottom.
     *
     * NOTE: This is different from 'effective root' - an activity that defines the task identity.
     */
    boolean isRootOfTask() {
        if (task == null) {
            return false;
        }
        final ActivityRecord rootActivity = task.getRootActivity(true);
        return this == rootActivity;
    }

    void setTaskOverlay(boolean taskOverlay) {
        mTaskOverlay = taskOverlay;
        setAlwaysOnTop(mTaskOverlay);
    }

    boolean isTaskOverlay() {
        return mTaskOverlay;
    }

    @Override
    public boolean isAlwaysOnTop() {
        return mTaskOverlay || super.isAlwaysOnTop();
    }

    @Override
    boolean showToCurrentUser() {
        return mShowForAllUsers || mWmService.isCurrentProfile(mUserId);
    }

    @Override
    boolean canCustomizeAppTransition() {
        return true;
    }

    @Override
    public String toString() {
        if (stringName != null) {
            return stringName + " t" + (task == null ? INVALID_TASK_ID : task.mTaskId) +
                    (finishing ? " f}" : "") + (mIsExiting ? " isExiting" : "") + "}";
        }
        StringBuilder sb = new StringBuilder(128);
        sb.append("ActivityRecord{");
        sb.append(Integer.toHexString(System.identityHashCode(this)));
        sb.append(" u");
        sb.append(mUserId);
        sb.append(' ');
        sb.append(intent.getComponent().flattenToShortString());
        stringName = sb.toString();
        return stringName;
    }

    /**
     * Write all fields to an {@code ActivityRecordProto}. This assumes the
     * {@code ActivityRecordProto} is the outer-most proto data.
     */
    void dumpDebug(ProtoOutputStream proto, @WindowTraceLogLevel int logLevel) {
        writeNameToProto(proto, NAME);
        super.dumpDebug(proto, WINDOW_TOKEN, logLevel);
        proto.write(LAST_SURFACE_SHOWING, mLastSurfaceShowing);
        proto.write(IS_WAITING_FOR_TRANSITION_START, isWaitingForTransitionStart());
        proto.write(IS_ANIMATING, isAnimating(PARENTS, ANIMATION_TYPE_APP_TRANSITION));
        if (mThumbnail != null){
            mThumbnail.dumpDebug(proto, THUMBNAIL);
        }
        proto.write(FILLS_PARENT, fillsParent());
        proto.write(APP_STOPPED, mAppStopped);
        proto.write(TRANSLUCENT, !occludesParent());
        proto.write(VISIBLE, mVisible);
        proto.write(VISIBLE_REQUESTED, mVisibleRequested);
        proto.write(CLIENT_VISIBLE, isClientVisible());
        proto.write(DEFER_HIDING_CLIENT, mDeferHidingClient);
        proto.write(REPORTED_DRAWN, mReportedDrawn);
        proto.write(REPORTED_VISIBLE, reportedVisible);
        proto.write(NUM_INTERESTING_WINDOWS, mNumInterestingWindows);
        proto.write(NUM_DRAWN_WINDOWS, mNumDrawnWindows);
        proto.write(ALL_DRAWN, allDrawn);
        proto.write(LAST_ALL_DRAWN, mLastAllDrawn);
        if (mStartingWindow != null) {
            mStartingWindow.writeIdentifierToProto(proto, STARTING_WINDOW);
        }
        proto.write(STARTING_DISPLAYED, startingDisplayed);
        proto.write(STARTING_MOVED, startingMoved);
        proto.write(VISIBLE_SET_FROM_TRANSFERRED_STARTING_WINDOW,
                mVisibleSetFromTransferredStartingWindow);

        proto.write(STATE, mState.toString());
        proto.write(FRONT_OF_TASK, isRootOfTask());
        if (hasProcess()) {
            proto.write(PROC_ID, app.getPid());
        }
        proto.write(PIP_AUTO_ENTER_ENABLED, pictureInPictureArgs.isAutoEnterEnabled());
        proto.write(IN_SIZE_COMPAT_MODE, inSizeCompatMode());
    }

    @Override
    long getProtoFieldId() {
        return ACTIVITY;
    }

    @Override
    public void dumpDebug(ProtoOutputStream proto, long fieldId,
            @WindowTraceLogLevel int logLevel) {
        // Critical log level logs only visible elements to mitigate performance overheard
        if (logLevel == WindowTraceLogLevel.CRITICAL && !isVisible()) {
            return;
        }

        final long token = proto.start(fieldId);
        dumpDebug(proto, logLevel);
        proto.end(token);
    }

    void writeNameToProto(ProtoOutputStream proto, long fieldId) {
        proto.write(fieldId, appToken.getName());
    }

    @Override
    void writeIdentifierToProto(ProtoOutputStream proto, long fieldId) {
        final long token = proto.start(fieldId);
        proto.write(HASH_CODE, System.identityHashCode(this));
        proto.write(USER_ID, mUserId);
        proto.write(TITLE, intent.getComponent().flattenToShortString());
        proto.end(token);
    }

    /**
     * The precomputed insets of the display in each rotation. This is used to make the size
     * compatibility mode activity compute the configuration without relying on its current display.
     */
    static class CompatDisplayInsets {
        /** The container width on rotation 0. */
        private final int mWidth;
        /** The container height on rotation 0. */
        private final int mHeight;
        /** Whether the {@link Task} windowingMode represents a floating window*/
        final boolean mIsFloating;
        /**
         * Whether is letterboxed because of fixed orientation when the unresizable activity is
         * first shown.
         */
        final boolean mIsInFixedOrientationLetterbox;
        /**
         * The nonDecorInsets for each rotation. Includes the navigation bar and cutout insets. It
         * is used to compute the appBounds.
         */
        final Rect[] mNonDecorInsets = new Rect[4];
        /**
         * The stableInsets for each rotation. Includes the status bar inset and the
         * nonDecorInsets. It is used to compute {@link Configuration#screenWidthDp} and
         * {@link Configuration#screenHeightDp}.
         */
        final Rect[] mStableInsets = new Rect[4];

        /** Constructs the environment to simulate the bounds behavior of the given container. */
        CompatDisplayInsets(DisplayContent display, ActivityRecord container,
                @Nullable Rect fixedOrientationBounds) {
            mIsFloating = container.getWindowConfiguration().tasksAreFloating();
            if (mIsFloating) {
                final Rect containerBounds = container.getWindowConfiguration().getBounds();
                mWidth = containerBounds.width();
                mHeight = containerBounds.height();
                // For apps in freeform, the task bounds are the parent bounds from the app's
                // perspective. No insets because within a window.
                final Rect emptyRect = new Rect();
                for (int rotation = 0; rotation < 4; rotation++) {
                    mNonDecorInsets[rotation] = emptyRect;
                    mStableInsets[rotation] = emptyRect;
                }
                mIsInFixedOrientationLetterbox = false;
                return;
            }

            final Task task = container.getTask();

            mIsInFixedOrientationLetterbox = fixedOrientationBounds != null;

            // Store the bounds of the Task for the non-resizable activity to use in size compat
            // mode so that the activity will not be resized regardless the windowing mode it is
            // currently in.
            // When an activity needs to be letterboxed because of fixed orientation, use fixed
            // orientation bounds instead of task bounds since the activity will be displayed
            // within these even if it is in size compat mode.
            final Rect filledContainerBounds = mIsInFixedOrientationLetterbox
                    ? fixedOrientationBounds
                    : task != null ? task.getBounds() : display.getBounds();
            final int filledContainerRotation = task != null
                    ? task.getConfiguration().windowConfiguration.getRotation()
                    : display.getConfiguration().windowConfiguration.getRotation();
            final Point dimensions = getRotationZeroDimensions(
                    filledContainerBounds, filledContainerRotation);
            mWidth = dimensions.x;
            mHeight = dimensions.y;

            // Bounds of the filled container if it doesn't fill the display.
            final Rect unfilledContainerBounds =
                    filledContainerBounds.equals(display.getBounds()) ? null : new Rect();
            final DisplayPolicy policy = display.getDisplayPolicy();
            for (int rotation = 0; rotation < 4; rotation++) {
                mNonDecorInsets[rotation] = new Rect();
                mStableInsets[rotation] = new Rect();
                final boolean rotated = (rotation == ROTATION_90 || rotation == ROTATION_270);
                final int dw = rotated ? display.mBaseDisplayHeight : display.mBaseDisplayWidth;
                final int dh = rotated ? display.mBaseDisplayWidth : display.mBaseDisplayHeight;
                final DisplayCutout cutout = display.calculateDisplayCutoutForRotation(rotation)
                        .getDisplayCutout();
                policy.getNonDecorInsetsLw(rotation, dw, dh, cutout, mNonDecorInsets[rotation]);
                mStableInsets[rotation].set(mNonDecorInsets[rotation]);
                policy.convertNonDecorInsetsToStableInsets(mStableInsets[rotation], rotation);

                if (unfilledContainerBounds == null) {
                    continue;
                }
                // The insets is based on the display, but the container may be smaller than the
                // display, so update the insets to exclude parts that are not intersected with the
                // container.
                unfilledContainerBounds.set(filledContainerBounds);
                display.rotateBounds(
                        filledContainerRotation,
                        rotation,
                        unfilledContainerBounds);
                updateInsetsForBounds(unfilledContainerBounds, dw, dh, mNonDecorInsets[rotation]);
                updateInsetsForBounds(unfilledContainerBounds, dw, dh, mStableInsets[rotation]);
            }
        }

        /**
         * Gets the width and height of the {@code container} when it is not rotated, so that after
         * the display is rotated, we can calculate the bounds by rotating the dimensions.
         * @see #getBoundsByRotation
         */
        private static Point getRotationZeroDimensions(final Rect bounds, int rotation) {
            final boolean rotated = (rotation == ROTATION_90 || rotation == ROTATION_270);
            final int width = bounds.width();
            final int height = bounds.height();
            return rotated ? new Point(height, width) : new Point(width, height);
        }

        /**
         * Updates the display insets to exclude the parts that are not intersected with the given
         * bounds.
         */
        private static void updateInsetsForBounds(Rect bounds, int displayWidth, int displayHeight,
                Rect inset) {
            inset.left = Math.max(0, inset.left - bounds.left);
            inset.top = Math.max(0, inset.top - bounds.top);
            inset.right = Math.max(0, bounds.right - displayWidth + inset.right);
            inset.bottom = Math.max(0, bounds.bottom - displayHeight + inset.bottom);
        }

        void getBoundsByRotation(Rect outBounds, int rotation) {
            final boolean rotated = (rotation == ROTATION_90 || rotation == ROTATION_270);
            final int dw = rotated ? mHeight : mWidth;
            final int dh = rotated ? mWidth : mHeight;
            outBounds.set(0, 0, dw, dh);
        }

        void getFrameByOrientation(Rect outBounds, int orientation) {
            final int longSide = Math.max(mWidth, mHeight);
            final int shortSide = Math.min(mWidth, mHeight);
            final boolean isLandscape = orientation == ORIENTATION_LANDSCAPE;
            outBounds.set(0, 0, isLandscape ? longSide : shortSide,
                    isLandscape ? shortSide : longSide);
        }

        /** Gets the horizontal centered container bounds for size compatibility mode. */
        void getContainerBounds(Rect outAppBounds, Rect outBounds, int rotation, int orientation,
                boolean orientationRequested, boolean isFixedToUserRotation) {
            getFrameByOrientation(outBounds, orientation);
            if (mIsFloating) {
                outAppBounds.set(outBounds);
                return;
            }

            getBoundsByRotation(outAppBounds, rotation);
            final int dW = outAppBounds.width();
            final int dH = outAppBounds.height();
            final boolean isOrientationMismatched =
                    ((outBounds.width() > outBounds.height()) != (dW > dH));

            if (isOrientationMismatched && isFixedToUserRotation && orientationRequested) {
                // The orientation is mismatched but the display cannot rotate. The bounds will fit
                // to the short side of container.
                if (orientation == ORIENTATION_LANDSCAPE) {
                    outBounds.bottom = (int) ((float) dW * dW / dH);
                    outBounds.right = dW;
                } else {
                    outBounds.bottom = dH;
                    outBounds.right = (int) ((float) dH * dH / dW);
                }
                outBounds.offset(getHorizontalCenterOffset(mWidth, outBounds.width()), 0 /* dy */);
            }
            outAppBounds.set(outBounds);

            if (isOrientationMismatched) {
                // One side of container is smaller than the requested size, then it will be scaled
                // and the final position will be calculated according to the parent container and
                // scale, so the original size shouldn't be shrunk by insets.
                final Rect insets = mNonDecorInsets[rotation];
                outBounds.offset(insets.left, insets.top);
                outAppBounds.offset(insets.left, insets.top);
            } else if (rotation != ROTATION_UNDEFINED) {
                // Ensure the app bounds won't overlap with insets.
                Task.intersectWithInsetsIfFits(outAppBounds, outBounds, mNonDecorInsets[rotation]);
            }
        }
    }

    private static class AppSaturationInfo {
        float[] mMatrix = new float[9];
        float[] mTranslation = new float[3];

        void setSaturation(@Size(9) float[] matrix, @Size(3) float[] translation) {
            System.arraycopy(matrix, 0, mMatrix, 0, mMatrix.length);
            System.arraycopy(translation, 0, mTranslation, 0, mTranslation.length);
        }
    }

    @Override
    RemoteAnimationTarget createRemoteAnimationTarget(
            RemoteAnimationController.RemoteAnimationRecord record) {
        final WindowState mainWindow = findMainWindow();
        if (task == null || mainWindow == null) {
            return null;
        }
        final Rect insets = mainWindow.getInsetsStateWithVisibilityOverride().calculateInsets(
                task.getBounds(), Type.systemBars(), false /* ignoreVisibility */);
        InsetUtils.addInsets(insets, getLetterboxInsets());

        return new RemoteAnimationTarget(task.mTaskId, record.getMode(),
                record.mAdapter.mCapturedLeash, !fillsParent(),
                new Rect(), insets,
                getPrefixOrderIndex(), record.mAdapter.mPosition, record.mAdapter.mLocalBounds,
                record.mAdapter.mRootTaskBounds, task.getWindowConfiguration(),
                false /*isNotInRecents*/,
                record.mThumbnailAdapter != null ? record.mThumbnailAdapter.mCapturedLeash : null,
                record.mStartBounds, task.getTaskInfo());
    }

    @Override
    boolean canCreateRemoteAnimationTarget() {
        return true;
    }

    @Override
    void getAnimationFrames(Rect outFrame, Rect outInsets, Rect outStableInsets,
            Rect outSurfaceInsets) {
        final WindowState win = findMainWindow();
        if (win == null) {
            return;
        }
        win.getAnimationFrames(outFrame, outInsets, outStableInsets, outSurfaceInsets);
    }

    void setPictureInPictureParams(PictureInPictureParams p) {
        pictureInPictureArgs.copyOnlySet(p);
        getTask().getRootTask().onPictureInPictureParamsChanged();
    }

    @Override
    boolean isSyncFinished() {
        if (!super.isSyncFinished()) return false;
        if (!isVisibleRequested()) return true;
        // If visibleRequested, wait for at-least one visible child.
        for (int i = mChildren.size() - 1; i >= 0; --i) {
            if (mChildren.get(i).isVisibleRequested()) {
                return true;
            }
        }
        return false;
    }

    static class Builder {
        private final ActivityTaskManagerService mAtmService;
        private WindowProcessController mCallerApp;
        private int mLaunchedFromPid;
        private int mLaunchedFromUid;
        private String mLaunchedFromPackage;
        private String mLaunchedFromFeature;
        private Intent mIntent;
        private String mResolvedType;
        private ActivityInfo mActivityInfo;
        private Configuration mConfiguration;
        private ActivityRecord mResultTo;
        private String mResultWho;
        private int mRequestCode;
        private boolean mComponentSpecified;
        private boolean mRootVoiceInteraction;
        private ActivityOptions mOptions;
        private ActivityRecord mSourceRecord;
        private PersistableBundle mPersistentState;
        private TaskDescription mTaskDescription;
        private long mCreateTime;

        Builder(ActivityTaskManagerService service) {
            mAtmService = service;
        }

        Builder setCaller(@NonNull WindowProcessController caller) {
            mCallerApp = caller;
            return this;
        }

        Builder setLaunchedFromPid(int pid) {
            mLaunchedFromPid = pid;
            return this;
        }

        Builder setLaunchedFromUid(int uid) {
            mLaunchedFromUid = uid;
            return this;
        }

        Builder setLaunchedFromPackage(String fromPackage) {
            mLaunchedFromPackage = fromPackage;
            return this;
        }

        Builder setLaunchedFromFeature(String fromFeature) {
            mLaunchedFromFeature = fromFeature;
            return this;
        }

        Builder setIntent(Intent intent) {
            mIntent = intent;
            return this;
        }

        Builder setResolvedType(String resolvedType) {
            mResolvedType = resolvedType;
            return this;
        }

        Builder setActivityInfo(ActivityInfo activityInfo) {
            mActivityInfo = activityInfo;
            return this;
        }

        Builder setResultTo(ActivityRecord resultTo) {
            mResultTo = resultTo;
            return this;
        }

        Builder setResultWho(String resultWho) {
            mResultWho = resultWho;
            return this;
        }

        Builder setRequestCode(int reqCode) {
            mRequestCode = reqCode;
            return this;
        }

        Builder setComponentSpecified(boolean componentSpecified) {
            mComponentSpecified = componentSpecified;
            return this;
        }

        Builder setRootVoiceInteraction(boolean rootVoiceInteraction) {
            mRootVoiceInteraction = rootVoiceInteraction;
            return this;
        }

        Builder setActivityOptions(ActivityOptions options) {
            mOptions = options;
            return this;
        }

        Builder setConfiguration(Configuration config) {
            mConfiguration = config;
            return this;
        }

        Builder setSourceRecord(ActivityRecord source) {
            mSourceRecord = source;
            return this;
        }

        private Builder setPersistentState(PersistableBundle persistentState) {
            mPersistentState = persistentState;
            return this;
        }

        private Builder setTaskDescription(TaskDescription taskDescription) {
            mTaskDescription = taskDescription;
            return this;
        }

        private Builder setCreateTime(long createTime) {
            mCreateTime = createTime;
            return this;
        }

        ActivityRecord build() {
            if (mConfiguration == null) {
                mConfiguration = mAtmService.getConfiguration();
            }
            return new ActivityRecord(mAtmService, mCallerApp, mLaunchedFromPid,
                    mLaunchedFromUid, mLaunchedFromPackage, mLaunchedFromFeature, mIntent,
                    mResolvedType, mActivityInfo, mConfiguration, mResultTo, mResultWho,
                    mRequestCode, mComponentSpecified, mRootVoiceInteraction,
                    mAtmService.mTaskSupervisor, mOptions, mSourceRecord, mPersistentState,
                    mTaskDescription, mCreateTime);
        }
    }
}