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android / platform / frameworks / base / c6853e091743 / . / services / core / java / com / android / server / wm / ActivityStarter.java
blob: 9be973be87fc3e31e105754c978bdbf0442612fb [file] [log] [blame]
/*
* Copyright (C) 2016 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.Manifest.permission.START_ACTIVITIES_FROM_BACKGROUND;
import static android.app.Activity.RESULT_CANCELED;
import static android.app.ActivityManager.START_ABORTED;
import static android.app.ActivityManager.START_CANCELED;
import static android.app.ActivityManager.START_CLASS_NOT_FOUND;
import static android.app.ActivityManager.START_DELIVERED_TO_TOP;
import static android.app.ActivityManager.START_FLAG_ONLY_IF_NEEDED;
import static android.app.ActivityManager.START_RETURN_INTENT_TO_CALLER;
import static android.app.ActivityManager.START_RETURN_LOCK_TASK_MODE_VIOLATION;
import static android.app.ActivityManager.START_SUCCESS;
import static android.app.ActivityManager.START_TASK_TO_FRONT;
import static android.app.ActivityTaskManager.INVALID_TASK_ID;
import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY;
import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY;
import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;
import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
import static android.content.Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT;
import static android.content.Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
import static android.content.Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
import static android.content.Intent.FLAG_ACTIVITY_NO_ANIMATION;
import static android.content.Intent.FLAG_ACTIVITY_NO_USER_ACTION;
import static android.content.Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP;
import static android.content.Intent.FLAG_ACTIVITY_REORDER_TO_FRONT;
import static android.content.Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED;
import static android.content.Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS;
import static android.content.Intent.FLAG_ACTIVITY_SINGLE_TOP;
import static android.content.Intent.FLAG_ACTIVITY_TASK_ON_HOME;
import static android.content.pm.ActivityInfo.DOCUMENT_LAUNCH_ALWAYS;
import static android.content.pm.ActivityInfo.FLAG_SHOW_FOR_ALL_USERS;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_INSTANCE;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_INSTANCE_PER_TASK;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_TASK;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_TOP;
import static android.content.pm.PackageManager.PERMISSION_GRANTED;
import static android.os.Process.INVALID_UID;
import static android.view.Display.DEFAULT_DISPLAY;
import static android.view.WindowManager.TRANSIT_OPEN;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_CONFIGURATION;
import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_TASKS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_ACTIVITY_STARTS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_PERMISSIONS_REVIEW;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_RESULTS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_USER_LEAVING;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_CONFIGURATION;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_FOCUS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_RESULTS;
import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_USER_LEAVING;
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.ANIMATE;
import static com.android.server.wm.ActivityTaskSupervisor.DEFER_RESUME;
import static com.android.server.wm.ActivityTaskSupervisor.ON_TOP;
import static com.android.server.wm.ActivityTaskSupervisor.PRESERVE_WINDOWS;
import static com.android.server.wm.LaunchParamsController.LaunchParamsModifier.PHASE_BOUNDS;
import static com.android.server.wm.LaunchParamsController.LaunchParamsModifier.PHASE_DISPLAY;
import static com.android.server.wm.Task.ActivityState.RESUMED;
import static com.android.server.wm.Task.REPARENT_MOVE_ROOT_TASK_TO_FRONT;
import static com.android.server.wm.WindowContainer.POSITION_TOP;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.ActivityManager;
import android.app.ActivityOptions;
import android.app.IApplicationThread;
import android.app.PendingIntent;
import android.app.ProfilerInfo;
import android.app.WaitResult;
import android.content.IIntentSender;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.AuxiliaryResolveInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManagerInternal;
import android.content.pm.ResolveInfo;
import android.content.pm.UserInfo;
import android.content.res.Configuration;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Process;
import android.os.RemoteException;
import android.os.Trace;
import android.os.UserHandle;
import android.os.UserManager;
import android.service.voice.IVoiceInteractionSession;
import android.text.TextUtils;
import android.util.ArraySet;
import android.util.DebugUtils;
import android.util.Pools.SynchronizedPool;
import android.util.Slog;
import android.window.IRemoteTransition;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.app.HeavyWeightSwitcherActivity;
import com.android.internal.app.IVoiceInteractor;
import com.android.internal.protolog.common.ProtoLog;
import com.android.server.am.PendingIntentRecord;
import com.android.server.pm.InstantAppResolver;
import com.android.server.power.ShutdownCheckPoints;
import com.android.server.statusbar.StatusBarManagerInternal;
import com.android.server.uri.NeededUriGrants;
import com.android.server.wm.ActivityMetricsLogger.LaunchingState;
import com.android.server.wm.LaunchParamsController.LaunchParams;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.util.Date;
/**
* Controller for interpreting how and then launching an activity.
*
* This class collects all the logic for determining how an intent and flags should be turned into
* an activity and associated task and root task.
*/
class ActivityStarter {
private static final String TAG = TAG_WITH_CLASS_NAME ? "ActivityStarter" : TAG_ATM;
private static final String TAG_RESULTS = TAG + POSTFIX_RESULTS;
private static final String TAG_FOCUS = TAG + POSTFIX_FOCUS;
private static final String TAG_CONFIGURATION = TAG + POSTFIX_CONFIGURATION;
private static final String TAG_USER_LEAVING = TAG + POSTFIX_USER_LEAVING;
private static final int INVALID_LAUNCH_MODE = -1;
private final ActivityTaskManagerService mService;
private final RootWindowContainer mRootWindowContainer;
private final ActivityTaskSupervisor mSupervisor;
private final ActivityStartInterceptor mInterceptor;
private final ActivityStartController mController;
// Share state variable among methods when starting an activity.
@VisibleForTesting
ActivityRecord mStartActivity;
private Intent mIntent;
private int mCallingUid;
private ActivityOptions mOptions;
// If it is true, background activity can only be started in an existing task that contains
// an activity with same uid, or if activity starts are enabled in developer options.
private boolean mRestrictedBgActivity;
private int mLaunchMode;
private boolean mLaunchTaskBehind;
private int mLaunchFlags;
private LaunchParams mLaunchParams = new LaunchParams();
private ActivityRecord mNotTop;
private boolean mDoResume;
private int mStartFlags;
private ActivityRecord mSourceRecord;
// The task display area to launch the activity onto, barring any strong reason to do otherwise.
private TaskDisplayArea mPreferredTaskDisplayArea;
private int mPreferredWindowingMode;
private Task mInTask;
@VisibleForTesting
boolean mAddingToTask;
private Task mReuseTask;
private ActivityInfo mNewTaskInfo;
private Intent mNewTaskIntent;
private Task mSourceRootTask;
private Task mTargetRootTask;
// The task that the last activity was started into. We currently reset the actual start
// activity's task and as a result may not have a reference to the task in all cases
private Task mTargetTask;
private boolean mMovedToFront;
private boolean mNoAnimation;
private boolean mKeepCurTransition;
private boolean mAvoidMoveToFront;
private boolean mFrozeTaskList;
// We must track when we deliver the new intent since multiple code paths invoke
// {@link #deliverNewIntent}. This is due to early returns in the code path. This flag is used
// inside {@link #deliverNewIntent} to suppress duplicate requests and ensure the intent is
// delivered at most once.
private boolean mIntentDelivered;
private IVoiceInteractionSession mVoiceSession;
private IVoiceInteractor mVoiceInteractor;
// Last activity record we attempted to start
private ActivityRecord mLastStartActivityRecord;
// The result of the last activity we attempted to start.
private int mLastStartActivityResult;
// Time in milli seconds we attempted to start the last activity.
private long mLastStartActivityTimeMs;
// The reason we were trying to start the last activity
private String mLastStartReason;
/*
* Request details provided through setter methods. Should be reset after {@link #execute()}
* to avoid unnecessarily retaining parameters. Note that the request is ignored when
* {@link #startResolvedActivity} is invoked directly.
*/
@VisibleForTesting
Request mRequest = new Request();
/**
* An interface that to provide {@link ActivityStarter} instances to the controller. This is
* used by tests to inject their own starter implementations for verification purposes.
*/
@VisibleForTesting
interface Factory {
/**
* Sets the {@link ActivityStartController} to be passed to {@link ActivityStarter}.
*/
void setController(ActivityStartController controller);
/**
* Generates an {@link ActivityStarter} that is ready to handle a new start request.
* @param controller The {@link ActivityStartController} which the starter who will own
* this instance.
* @return an {@link ActivityStarter}
*/
ActivityStarter obtain();
/**
* Recycles a starter for reuse.
*/
void recycle(ActivityStarter starter);
}
/**
* Default implementation of {@link StarterFactory}.
*/
static class DefaultFactory implements Factory {
/**
* The maximum count of starters that should be active at one time:
* 1. last ran starter (for logging and post activity processing)
* 2. current running starter
* 3. starter from re-entry in (2)
*/
private final int MAX_STARTER_COUNT = 3;
private ActivityStartController mController;
private ActivityTaskManagerService mService;
private ActivityTaskSupervisor mSupervisor;
private ActivityStartInterceptor mInterceptor;
private SynchronizedPool<ActivityStarter> mStarterPool =
new SynchronizedPool<>(MAX_STARTER_COUNT);
DefaultFactory(ActivityTaskManagerService service,
ActivityTaskSupervisor supervisor, ActivityStartInterceptor interceptor) {
mService = service;
mSupervisor = supervisor;
mInterceptor = interceptor;
}
@Override
public void setController(ActivityStartController controller) {
mController = controller;
}
@Override
public ActivityStarter obtain() {
ActivityStarter starter = mStarterPool.acquire();
if (starter == null) {
if (mService.mRootWindowContainer == null) {
throw new IllegalStateException("Too early to start activity.");
}
starter = new ActivityStarter(mController, mService, mSupervisor, mInterceptor);
}
return starter;
}
@Override
public void recycle(ActivityStarter starter) {
starter.reset(true /* clearRequest*/);
mStarterPool.release(starter);
}
}
/**
* Container for capturing initial start request details. This information is NOT reset until
* the {@link ActivityStarter} is recycled, allowing for multiple invocations with the same
* parameters.
*
* TODO(b/64750076): Investigate consolidating member variables of {@link ActivityStarter} with
* the request object. Note that some member variables are referenced in
* {@link #dump(PrintWriter, String)} and therefore cannot be cleared immediately after
* execution.
*/
@VisibleForTesting
static class Request {
private static final int DEFAULT_CALLING_UID = -1;
private static final int DEFAULT_CALLING_PID = 0;
static final int DEFAULT_REAL_CALLING_UID = -1;
static final int DEFAULT_REAL_CALLING_PID = 0;
IApplicationThread caller;
Intent intent;
NeededUriGrants intentGrants;
// A copy of the original requested intent, in case for ephemeral app launch.
Intent ephemeralIntent;
String resolvedType;
ActivityInfo activityInfo;
ResolveInfo resolveInfo;
IVoiceInteractionSession voiceSession;
IVoiceInteractor voiceInteractor;
IBinder resultTo;
String resultWho;
int requestCode;
int callingPid = DEFAULT_CALLING_PID;
int callingUid = DEFAULT_CALLING_UID;
String callingPackage;
@Nullable String callingFeatureId;
int realCallingPid = DEFAULT_REAL_CALLING_PID;
int realCallingUid = DEFAULT_REAL_CALLING_UID;
int startFlags;
SafeActivityOptions activityOptions;
boolean ignoreTargetSecurity;
boolean componentSpecified;
boolean avoidMoveToFront;
ActivityRecord[] outActivity;
Task inTask;
String reason;
ProfilerInfo profilerInfo;
Configuration globalConfig;
int userId;
WaitResult waitResult;
int filterCallingUid;
PendingIntentRecord originatingPendingIntent;
boolean allowBackgroundActivityStart;
/**
* If set to {@code true}, allows this activity start to look into
* {@link PendingRemoteAnimationRegistry}
*/
boolean allowPendingRemoteAnimationRegistryLookup;
/**
* Ensure constructed request matches reset instance.
*/
Request() {
reset();
}
/**
* Sets values back to the initial state, clearing any held references.
*/
void reset() {
caller = null;
intent = null;
intentGrants = null;
ephemeralIntent = null;
resolvedType = null;
activityInfo = null;
resolveInfo = null;
voiceSession = null;
voiceInteractor = null;
resultTo = null;
resultWho = null;
requestCode = 0;
callingPid = DEFAULT_CALLING_PID;
callingUid = DEFAULT_CALLING_UID;
callingPackage = null;
callingFeatureId = null;
realCallingPid = DEFAULT_REAL_CALLING_PID;
realCallingUid = DEFAULT_REAL_CALLING_UID;
startFlags = 0;
activityOptions = null;
ignoreTargetSecurity = false;
componentSpecified = false;
outActivity = null;
inTask = null;
reason = null;
profilerInfo = null;
globalConfig = null;
userId = 0;
waitResult = null;
avoidMoveToFront = false;
allowPendingRemoteAnimationRegistryLookup = true;
filterCallingUid = UserHandle.USER_NULL;
originatingPendingIntent = null;
allowBackgroundActivityStart = false;
}
/**
* Adopts all values from passed in request.
*/
void set(Request request) {
caller = request.caller;
intent = request.intent;
intentGrants = request.intentGrants;
ephemeralIntent = request.ephemeralIntent;
resolvedType = request.resolvedType;
activityInfo = request.activityInfo;
resolveInfo = request.resolveInfo;
voiceSession = request.voiceSession;
voiceInteractor = request.voiceInteractor;
resultTo = request.resultTo;
resultWho = request.resultWho;
requestCode = request.requestCode;
callingPid = request.callingPid;
callingUid = request.callingUid;
callingPackage = request.callingPackage;
callingFeatureId = request.callingFeatureId;
realCallingPid = request.realCallingPid;
realCallingUid = request.realCallingUid;
startFlags = request.startFlags;
activityOptions = request.activityOptions;
ignoreTargetSecurity = request.ignoreTargetSecurity;
componentSpecified = request.componentSpecified;
outActivity = request.outActivity;
inTask = request.inTask;
reason = request.reason;
profilerInfo = request.profilerInfo;
globalConfig = request.globalConfig;
userId = request.userId;
waitResult = request.waitResult;
avoidMoveToFront = request.avoidMoveToFront;
allowPendingRemoteAnimationRegistryLookup
= request.allowPendingRemoteAnimationRegistryLookup;
filterCallingUid = request.filterCallingUid;
originatingPendingIntent = request.originatingPendingIntent;
allowBackgroundActivityStart = request.allowBackgroundActivityStart;
}
/**
* Resolve activity from the given intent for this launch.
*/
void resolveActivity(ActivityTaskSupervisor supervisor) {
if (realCallingPid == Request.DEFAULT_REAL_CALLING_PID) {
realCallingPid = Binder.getCallingPid();
}
if (realCallingUid == Request.DEFAULT_REAL_CALLING_UID) {
realCallingUid = Binder.getCallingUid();
}
if (callingUid >= 0) {
callingPid = -1;
} else if (caller == null) {
callingPid = realCallingPid;
callingUid = realCallingUid;
} else {
callingPid = callingUid = -1;
}
// To determine the set of needed Uri permission grants, we need the
// "resolved" calling UID, where we try our best to identify the
// actual caller that is starting this activity
int resolvedCallingUid = callingUid;
if (caller != null) {
synchronized (supervisor.mService.mGlobalLock) {
final WindowProcessController callerApp = supervisor.mService
.getProcessController(caller);
if (callerApp != null) {
resolvedCallingUid = callerApp.mInfo.uid;
}
}
}
// Save a copy in case ephemeral needs it
ephemeralIntent = new Intent(intent);
// Don't modify the client's object!
intent = new Intent(intent);
if (intent.getComponent() != null
&& !(Intent.ACTION_VIEW.equals(intent.getAction()) && intent.getData() == null)
&& !Intent.ACTION_INSTALL_INSTANT_APP_PACKAGE.equals(intent.getAction())
&& !Intent.ACTION_RESOLVE_INSTANT_APP_PACKAGE.equals(intent.getAction())
&& supervisor.mService.getPackageManagerInternalLocked()
.isInstantAppInstallerComponent(intent.getComponent())) {
// Intercept intents targeted directly to the ephemeral installer the ephemeral
// installer should never be started with a raw Intent; instead adjust the intent
// so it looks like a "normal" instant app launch.
intent.setComponent(null /* component */);
}
resolveInfo = supervisor.resolveIntent(intent, resolvedType, userId,
0 /* matchFlags */,
computeResolveFilterUid(callingUid, realCallingUid, filterCallingUid));
if (resolveInfo == null) {
final UserInfo userInfo = supervisor.getUserInfo(userId);
if (userInfo != null && userInfo.isManagedProfile()) {
// Special case for managed profiles, if attempting to launch non-cryto aware
// app in a locked managed profile from an unlocked parent allow it to resolve
// as user will be sent via confirm credentials to unlock the profile.
final UserManager userManager = UserManager.get(supervisor.mService.mContext);
boolean profileLockedAndParentUnlockingOrUnlocked = false;
final long token = Binder.clearCallingIdentity();
try {
final UserInfo parent = userManager.getProfileParent(userId);
profileLockedAndParentUnlockingOrUnlocked = (parent != null)
&& userManager.isUserUnlockingOrUnlocked(parent.id)
&& !userManager.isUserUnlockingOrUnlocked(userId);
} finally {
Binder.restoreCallingIdentity(token);
}
if (profileLockedAndParentUnlockingOrUnlocked) {
resolveInfo = supervisor.resolveIntent(intent, resolvedType, userId,
PackageManager.MATCH_DIRECT_BOOT_AWARE
| PackageManager.MATCH_DIRECT_BOOT_UNAWARE,
computeResolveFilterUid(callingUid, realCallingUid,
filterCallingUid));
}
}
}
// Collect information about the target of the Intent.
activityInfo = supervisor.resolveActivity(intent, resolveInfo, startFlags,
profilerInfo);
// Carefully collect grants without holding lock
if (activityInfo != null) {
intentGrants = supervisor.mService.mUgmInternal.checkGrantUriPermissionFromIntent(
intent, resolvedCallingUid, activityInfo.applicationInfo.packageName,
UserHandle.getUserId(activityInfo.applicationInfo.uid));
}
}
}
ActivityStarter(ActivityStartController controller, ActivityTaskManagerService service,
ActivityTaskSupervisor supervisor, ActivityStartInterceptor interceptor) {
mController = controller;
mService = service;
mRootWindowContainer = service.mRootWindowContainer;
mSupervisor = supervisor;
mInterceptor = interceptor;
reset(true);
}
/**
* Effectively duplicates the starter passed in. All state and request values will be
* mirrored.
* @param starter
*/
void set(ActivityStarter starter) {
mStartActivity = starter.mStartActivity;
mIntent = starter.mIntent;
mCallingUid = starter.mCallingUid;
mOptions = starter.mOptions;
mRestrictedBgActivity = starter.mRestrictedBgActivity;
mLaunchTaskBehind = starter.mLaunchTaskBehind;
mLaunchFlags = starter.mLaunchFlags;
mLaunchMode = starter.mLaunchMode;
mLaunchParams.set(starter.mLaunchParams);
mNotTop = starter.mNotTop;
mDoResume = starter.mDoResume;
mStartFlags = starter.mStartFlags;
mSourceRecord = starter.mSourceRecord;
mPreferredTaskDisplayArea = starter.mPreferredTaskDisplayArea;
mPreferredWindowingMode = starter.mPreferredWindowingMode;
mInTask = starter.mInTask;
mAddingToTask = starter.mAddingToTask;
mReuseTask = starter.mReuseTask;
mNewTaskInfo = starter.mNewTaskInfo;
mNewTaskIntent = starter.mNewTaskIntent;
mSourceRootTask = starter.mSourceRootTask;
mTargetTask = starter.mTargetTask;
mTargetRootTask = starter.mTargetRootTask;
mMovedToFront = starter.mMovedToFront;
mNoAnimation = starter.mNoAnimation;
mKeepCurTransition = starter.mKeepCurTransition;
mAvoidMoveToFront = starter.mAvoidMoveToFront;
mFrozeTaskList = starter.mFrozeTaskList;
mVoiceSession = starter.mVoiceSession;
mVoiceInteractor = starter.mVoiceInteractor;
mIntentDelivered = starter.mIntentDelivered;
mRequest.set(starter.mRequest);
}
boolean relatedToPackage(String packageName) {
return (mLastStartActivityRecord != null
&& packageName.equals(mLastStartActivityRecord.packageName))
|| (mStartActivity != null && packageName.equals(mStartActivity.packageName));
}
/**
* Starts an activity based on the provided {@link ActivityRecord} and environment parameters.
* Note that this method is called internally as well as part of {@link #executeRequest}.
*/
void startResolvedActivity(final ActivityRecord r, ActivityRecord sourceRecord,
IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor,
int startFlags, boolean doResume, ActivityOptions options, Task inTask,
NeededUriGrants intentGrants) {
try {
final LaunchingState launchingState = mSupervisor.getActivityMetricsLogger()
.notifyActivityLaunching(r.intent, r.resultTo);
mLastStartReason = "startResolvedActivity";
mLastStartActivityTimeMs = System.currentTimeMillis();
mLastStartActivityRecord = r;
mLastStartActivityResult = startActivityUnchecked(r, sourceRecord, voiceSession,
voiceInteractor, startFlags, doResume, options, inTask,
false /* restrictedBgActivity */, intentGrants);
mSupervisor.getActivityMetricsLogger().notifyActivityLaunched(launchingState,
mLastStartActivityResult, mLastStartActivityRecord, options);
} finally {
onExecutionComplete();
}
}
/**
* Resolve necessary information according the request parameters provided earlier, and execute
* the request which begin the journey of starting an activity.
* @return The starter result.
*/
int execute() {
try {
// Refuse possible leaked file descriptors
if (mRequest.intent != null && mRequest.intent.hasFileDescriptors()) {
throw new IllegalArgumentException("File descriptors passed in Intent");
}
final LaunchingState launchingState;
synchronized (mService.mGlobalLock) {
final ActivityRecord caller = ActivityRecord.forTokenLocked(mRequest.resultTo);
launchingState = mSupervisor.getActivityMetricsLogger().notifyActivityLaunching(
mRequest.intent, caller);
}
// If the caller hasn't already resolved the activity, we're willing
// to do so here. If the caller is already holding the WM lock here,
// and we need to check dynamic Uri permissions, then we're forced
// to assume those permissions are denied to avoid deadlocking.
if (mRequest.activityInfo == null) {
mRequest.resolveActivity(mSupervisor);
}
// Add checkpoint for this shutdown or reboot attempt, so we can record the original
// intent action and package name.
if (mRequest.intent != null) {
String intentAction = mRequest.intent.getAction();
String callingPackage = mRequest.callingPackage;
if (intentAction != null && callingPackage != null
&& (Intent.ACTION_REQUEST_SHUTDOWN.equals(intentAction)
|| Intent.ACTION_SHUTDOWN.equals(intentAction)
|| Intent.ACTION_REBOOT.equals(intentAction))) {
ShutdownCheckPoints.recordCheckPoint(intentAction, callingPackage, null);
}
}
int res;
synchronized (mService.mGlobalLock) {
final boolean globalConfigWillChange = mRequest.globalConfig != null
&& mService.getGlobalConfiguration().diff(mRequest.globalConfig) != 0;
final Task rootTask = mRootWindowContainer.getTopDisplayFocusedRootTask();
if (rootTask != null) {
rootTask.mConfigWillChange = globalConfigWillChange;
}
ProtoLog.v(WM_DEBUG_CONFIGURATION, "Starting activity when config "
+ "will change = %b", globalConfigWillChange);
final long origId = Binder.clearCallingIdentity();
res = resolveToHeavyWeightSwitcherIfNeeded();
if (res != START_SUCCESS) {
return res;
}
res = executeRequest(mRequest);
Binder.restoreCallingIdentity(origId);
if (globalConfigWillChange) {
// If the caller also wants to switch to a new configuration, do so now.
// This allows a clean switch, as we are waiting for the current activity
// to pause (so we will not destroy it), and have not yet started the
// next activity.
mService.mAmInternal.enforceCallingPermission(
android.Manifest.permission.CHANGE_CONFIGURATION,
"updateConfiguration()");
if (rootTask != null) {
rootTask.mConfigWillChange = false;
}
ProtoLog.v(WM_DEBUG_CONFIGURATION,
"Updating to new configuration after starting activity.");
mService.updateConfigurationLocked(mRequest.globalConfig, null, false);
}
// The original options may have additional info about metrics. The mOptions is not
// used here because it may be cleared in setTargetRootTaskIfNeeded.
final ActivityOptions originalOptions = mRequest.activityOptions != null
? mRequest.activityOptions.getOriginalOptions() : null;
// Notify ActivityMetricsLogger that the activity has launched.
// ActivityMetricsLogger will then wait for the windows to be drawn and populate
// WaitResult.
mSupervisor.getActivityMetricsLogger().notifyActivityLaunched(launchingState, res,
mLastStartActivityRecord, originalOptions);
if (mRequest.waitResult != null) {
mRequest.waitResult.result = res;
res = waitResultIfNeeded(mRequest.waitResult, mLastStartActivityRecord,
launchingState);
}
return getExternalResult(res);
}
} finally {
onExecutionComplete();
}
}
/**
* Updates the request to heavy-weight switch if this is a heavy-weight process while there
* already have another, different heavy-weight process running.
*/
private int resolveToHeavyWeightSwitcherIfNeeded() {
if (mRequest.activityInfo == null || !mService.mHasHeavyWeightFeature
|| (mRequest.activityInfo.applicationInfo.privateFlags
& ApplicationInfo.PRIVATE_FLAG_CANT_SAVE_STATE) == 0) {
return START_SUCCESS;
}
if (!mRequest.activityInfo.processName.equals(
mRequest.activityInfo.applicationInfo.packageName)) {
return START_SUCCESS;
}
final WindowProcessController heavy = mService.mHeavyWeightProcess;
if (heavy == null || (heavy.mInfo.uid == mRequest.activityInfo.applicationInfo.uid
&& heavy.mName.equals(mRequest.activityInfo.processName))) {
return START_SUCCESS;
}
int appCallingUid = mRequest.callingUid;
if (mRequest.caller != null) {
WindowProcessController callerApp = mService.getProcessController(mRequest.caller);
if (callerApp != null) {
appCallingUid = callerApp.mInfo.uid;
} else {
Slog.w(TAG, "Unable to find app for caller " + mRequest.caller + " (pid="
+ mRequest.callingPid + ") when starting: " + mRequest.intent.toString());
SafeActivityOptions.abort(mRequest.activityOptions);
return ActivityManager.START_PERMISSION_DENIED;
}
}
final IIntentSender target = mService.getIntentSenderLocked(
ActivityManager.INTENT_SENDER_ACTIVITY, "android" /* packageName */,
null /* featureId */, appCallingUid, mRequest.userId, null /* token */,
null /* resultWho*/, 0 /* requestCode*/, new Intent[]{mRequest.intent},
new String[]{mRequest.resolvedType},
PendingIntent.FLAG_CANCEL_CURRENT | PendingIntent.FLAG_ONE_SHOT,
null /* bOptions */);
final Intent newIntent = new Intent();
if (mRequest.requestCode >= 0) {
// Caller is requesting a result.
newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_HAS_RESULT, true);
}
newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_INTENT, new IntentSender(target));
heavy.updateIntentForHeavyWeightActivity(newIntent);
newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_NEW_APP,
mRequest.activityInfo.packageName);
newIntent.setFlags(mRequest.intent.getFlags());
newIntent.setClassName("android" /* packageName */,
HeavyWeightSwitcherActivity.class.getName());
mRequest.intent = newIntent;
mRequest.resolvedType = null;
mRequest.caller = null;
mRequest.callingUid = Binder.getCallingUid();
mRequest.callingPid = Binder.getCallingPid();
mRequest.componentSpecified = true;
mRequest.resolveInfo = mSupervisor.resolveIntent(mRequest.intent, null /* resolvedType */,
mRequest.userId, 0 /* matchFlags */,
computeResolveFilterUid(mRequest.callingUid, mRequest.realCallingUid,
mRequest.filterCallingUid));
mRequest.activityInfo =
mRequest.resolveInfo != null ? mRequest.resolveInfo.activityInfo : null;
if (mRequest.activityInfo != null) {
mRequest.activityInfo = mService.mAmInternal.getActivityInfoForUser(
mRequest.activityInfo, mRequest.userId);
}
return START_SUCCESS;
}
/**
* Wait for activity launch completes.
*/
private int waitResultIfNeeded(WaitResult waitResult, ActivityRecord r,
LaunchingState launchingState) {
final int res = waitResult.result;
if (res == START_DELIVERED_TO_TOP
|| (res == START_TASK_TO_FRONT && r.nowVisible && r.isState(RESUMED))) {
// The activity should already be visible, so nothing to wait.
waitResult.timeout = false;
waitResult.who = r.mActivityComponent;
waitResult.totalTime = 0;
return res;
}
mSupervisor.waitActivityVisibleOrLaunched(waitResult, r, launchingState);
if (res == START_SUCCESS && waitResult.result == START_TASK_TO_FRONT) {
// A trampoline activity is launched and it brings another existing activity to front.
return START_TASK_TO_FRONT;
}
return res;
}
/**
* Executing activity start request and starts the journey of starting an activity. Here
* begins with performing several preliminary checks. The normally activity launch flow will
* go through {@link #startActivityUnchecked} to {@link #startActivityInner}.
*/
private int executeRequest(Request request) {
if (TextUtils.isEmpty(request.reason)) {
throw new IllegalArgumentException("Need to specify a reason.");
}
mLastStartReason = request.reason;
mLastStartActivityTimeMs = System.currentTimeMillis();
mLastStartActivityRecord = null;
final IApplicationThread caller = request.caller;
Intent intent = request.intent;
NeededUriGrants intentGrants = request.intentGrants;
String resolvedType = request.resolvedType;
ActivityInfo aInfo = request.activityInfo;
ResolveInfo rInfo = request.resolveInfo;
final IVoiceInteractionSession voiceSession = request.voiceSession;
final IBinder resultTo = request.resultTo;
String resultWho = request.resultWho;
int requestCode = request.requestCode;
int callingPid = request.callingPid;
int callingUid = request.callingUid;
String callingPackage = request.callingPackage;
String callingFeatureId = request.callingFeatureId;
final int realCallingPid = request.realCallingPid;
final int realCallingUid = request.realCallingUid;
final int startFlags = request.startFlags;
final SafeActivityOptions options = request.activityOptions;
Task inTask = request.inTask;
int err = ActivityManager.START_SUCCESS;
// Pull the optional Ephemeral Installer-only bundle out of the options early.
final Bundle verificationBundle =
options != null ? options.popAppVerificationBundle() : null;
WindowProcessController callerApp = null;
if (caller != null) {
callerApp = mService.getProcessController(caller);
if (callerApp != null) {
callingPid = callerApp.getPid();
callingUid = callerApp.mInfo.uid;
} else {
Slog.w(TAG, "Unable to find app for caller " + caller + " (pid=" + callingPid
+ ") when starting: " + intent.toString());
err = ActivityManager.START_PERMISSION_DENIED;
}
}
final int userId = aInfo != null && aInfo.applicationInfo != null
? UserHandle.getUserId(aInfo.applicationInfo.uid) : 0;
if (err == ActivityManager.START_SUCCESS) {
Slog.i(TAG, "START u" + userId + " {" + intent.toShortString(true, true, true, false)
+ "} from uid " + callingUid);
}
ActivityRecord sourceRecord = null;
ActivityRecord resultRecord = null;
if (resultTo != null) {
sourceRecord = mRootWindowContainer.isInAnyTask(resultTo);
if (DEBUG_RESULTS) {
Slog.v(TAG_RESULTS, "Will send result to " + resultTo + " " + sourceRecord);
}
if (sourceRecord != null) {
if (requestCode >= 0 && !sourceRecord.finishing) {
resultRecord = sourceRecord;
}
}
}
final int launchFlags = intent.getFlags();
if ((launchFlags & Intent.FLAG_ACTIVITY_FORWARD_RESULT) != 0 && sourceRecord != null) {
// Transfer the result target from the source activity to the new one being started,
// including any failures.
if (requestCode >= 0) {
SafeActivityOptions.abort(options);
return ActivityManager.START_FORWARD_AND_REQUEST_CONFLICT;
}
resultRecord = sourceRecord.resultTo;
if (resultRecord != null && !resultRecord.isInRootTaskLocked()) {
resultRecord = null;
}
resultWho = sourceRecord.resultWho;
requestCode = sourceRecord.requestCode;
sourceRecord.resultTo = null;
if (resultRecord != null) {
resultRecord.removeResultsLocked(sourceRecord, resultWho, requestCode);
}
if (sourceRecord.launchedFromUid == callingUid) {
// The new activity is being launched from the same uid as the previous activity
// in the flow, and asking to forward its result back to the previous. In this
// case the activity is serving as a trampoline between the two, so we also want
// to update its launchedFromPackage to be the same as the previous activity.
// Note that this is safe, since we know these two packages come from the same
// uid; the caller could just as well have supplied that same package name itself
// . This specifially deals with the case of an intent picker/chooser being
// launched in the app flow to redirect to an activity picked by the user, where
// we want the final activity to consider it to have been launched by the
// previous app activity.
callingPackage = sourceRecord.launchedFromPackage;
callingFeatureId = sourceRecord.launchedFromFeatureId;
}
}
if (err == ActivityManager.START_SUCCESS && intent.getComponent() == null) {
// We couldn't find a class that can handle the given Intent.
// That's the end of that!
err = ActivityManager.START_INTENT_NOT_RESOLVED;
}
if (err == ActivityManager.START_SUCCESS && aInfo == null) {
// We couldn't find the specific class specified in the Intent.
// Also the end of the line.
err = ActivityManager.START_CLASS_NOT_FOUND;
}
if (err == ActivityManager.START_SUCCESS && sourceRecord != null
&& sourceRecord.getTask().voiceSession != null) {
// If this activity is being launched as part of a voice session, we need to ensure
// that it is safe to do so. If the upcoming activity will also be part of the voice
// session, we can only launch it if it has explicitly said it supports the VOICE
// category, or it is a part of the calling app.
if ((launchFlags & FLAG_ACTIVITY_NEW_TASK) == 0
&& sourceRecord.info.applicationInfo.uid != aInfo.applicationInfo.uid) {
try {
intent.addCategory(Intent.CATEGORY_VOICE);
if (!mService.getPackageManager().activitySupportsIntent(
intent.getComponent(), intent, resolvedType)) {
Slog.w(TAG, "Activity being started in current voice task does not support "
+ "voice: " + intent);
err = ActivityManager.START_NOT_VOICE_COMPATIBLE;
}
} catch (RemoteException e) {
Slog.w(TAG, "Failure checking voice capabilities", e);
err = ActivityManager.START_NOT_VOICE_COMPATIBLE;
}
}
}
if (err == ActivityManager.START_SUCCESS && voiceSession != null) {
// If the caller is starting a new voice session, just make sure the target
// is actually allowing it to run this way.
try {
if (!mService.getPackageManager().activitySupportsIntent(intent.getComponent(),
intent, resolvedType)) {
Slog.w(TAG,
"Activity being started in new voice task does not support: " + intent);
err = ActivityManager.START_NOT_VOICE_COMPATIBLE;
}
} catch (RemoteException e) {
Slog.w(TAG, "Failure checking voice capabilities", e);
err = ActivityManager.START_NOT_VOICE_COMPATIBLE;
}
}
final Task resultRootTask = resultRecord == null
? null : resultRecord.getRootTask();
if (err != START_SUCCESS) {
if (resultRecord != null) {
resultRecord.sendResult(INVALID_UID, resultWho, requestCode, RESULT_CANCELED,
null /* data */, null /* dataGrants */);
}
SafeActivityOptions.abort(options);
return err;
}
boolean abort = !mSupervisor.checkStartAnyActivityPermission(intent, aInfo, resultWho,
requestCode, callingPid, callingUid, callingPackage, callingFeatureId,
request.ignoreTargetSecurity, inTask != null, callerApp, resultRecord,
resultRootTask);
abort |= !mService.mIntentFirewall.checkStartActivity(intent, callingUid,
callingPid, resolvedType, aInfo.applicationInfo);
abort |= !mService.getPermissionPolicyInternal().checkStartActivity(intent, callingUid,
callingPackage);
boolean restrictedBgActivity = false;
if (!abort) {
try {
Trace.traceBegin(Trace.TRACE_TAG_WINDOW_MANAGER,
"shouldAbortBackgroundActivityStart");
restrictedBgActivity = shouldAbortBackgroundActivityStart(callingUid,
callingPid, callingPackage, realCallingUid, realCallingPid, callerApp,
request.originatingPendingIntent, request.allowBackgroundActivityStart,
intent);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_WINDOW_MANAGER);
}
}
// Merge the two options bundles, while realCallerOptions takes precedence.
ActivityOptions checkedOptions = options != null
? options.getOptions(intent, aInfo, callerApp, mSupervisor) : null;
if (request.allowPendingRemoteAnimationRegistryLookup) {
checkedOptions = mService.getActivityStartController()
.getPendingRemoteAnimationRegistry()
.overrideOptionsIfNeeded(callingPackage, checkedOptions);
}
if (mService.mController != null) {
try {
// The Intent we give to the watcher has the extra data stripped off, since it
// can contain private information.
Intent watchIntent = intent.cloneFilter();
abort |= !mService.mController.activityStarting(watchIntent,
aInfo.applicationInfo.packageName);
} catch (RemoteException e) {
mService.mController = null;
}
}
mInterceptor.setStates(userId, realCallingPid, realCallingUid, startFlags, callingPackage,
callingFeatureId);
if (mInterceptor.intercept(intent, rInfo, aInfo, resolvedType, inTask, callingPid,
callingUid, checkedOptions)) {
// activity start was intercepted, e.g. because the target user is currently in quiet
// mode (turn off work) or the target application is suspended
intent = mInterceptor.mIntent;
rInfo = mInterceptor.mRInfo;
aInfo = mInterceptor.mAInfo;
resolvedType = mInterceptor.mResolvedType;
inTask = mInterceptor.mInTask;
callingPid = mInterceptor.mCallingPid;
callingUid = mInterceptor.mCallingUid;
checkedOptions = mInterceptor.mActivityOptions;
// The interception target shouldn't get any permission grants
// intended for the original destination
intentGrants = null;
}
if (abort) {
if (resultRecord != null) {
resultRecord.sendResult(INVALID_UID, resultWho, requestCode, RESULT_CANCELED,
null /* data */, null /* dataGrants */);
}
// We pretend to the caller that it was really started, but they will just get a
// cancel result.
ActivityOptions.abort(checkedOptions);
return START_ABORTED;
}
// If permissions need a review before any of the app components can run, we
// launch the review activity and pass a pending intent to start the activity
// we are to launching now after the review is completed.
if (aInfo != null) {
if (mService.getPackageManagerInternalLocked().isPermissionsReviewRequired(
aInfo.packageName, userId)) {
final IIntentSender target = mService.getIntentSenderLocked(
ActivityManager.INTENT_SENDER_ACTIVITY, callingPackage, callingFeatureId,
callingUid, userId, null, null, 0, new Intent[]{intent},
new String[]{resolvedType}, PendingIntent.FLAG_CANCEL_CURRENT
| PendingIntent.FLAG_ONE_SHOT, null);
Intent newIntent = new Intent(Intent.ACTION_REVIEW_PERMISSIONS);
int flags = intent.getFlags();
flags |= Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;
/*
* Prevent reuse of review activity: Each app needs their own review activity. By
* default activities launched with NEW_TASK or NEW_DOCUMENT try to reuse activities
* with the same launch parameters (extras are ignored). Hence to avoid possible
* reuse force a new activity via the MULTIPLE_TASK flag.
*
* Activities that are not launched with NEW_TASK or NEW_DOCUMENT are not re-used,
* hence no need to add the flag in this case.
*/
if ((flags & (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_NEW_DOCUMENT)) != 0) {
flags |= Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
}
newIntent.setFlags(flags);
newIntent.putExtra(Intent.EXTRA_PACKAGE_NAME, aInfo.packageName);
newIntent.putExtra(Intent.EXTRA_INTENT, new IntentSender(target));
if (resultRecord != null) {
newIntent.putExtra(Intent.EXTRA_RESULT_NEEDED, true);
}
intent = newIntent;
// The permissions review target shouldn't get any permission
// grants intended for the original destination
intentGrants = null;
resolvedType = null;
callingUid = realCallingUid;
callingPid = realCallingPid;
rInfo = mSupervisor.resolveIntent(intent, resolvedType, userId, 0,
computeResolveFilterUid(
callingUid, realCallingUid, request.filterCallingUid));
aInfo = mSupervisor.resolveActivity(intent, rInfo, startFlags,
null /*profilerInfo*/);
if (DEBUG_PERMISSIONS_REVIEW) {
final Task focusedRootTask =
mRootWindowContainer.getTopDisplayFocusedRootTask();
Slog.i(TAG, "START u" + userId + " {" + intent.toShortString(true, true,
true, false) + "} from uid " + callingUid + " on display "
+ (focusedRootTask == null ? DEFAULT_DISPLAY
: focusedRootTask.getDisplayId()));
}
}
}
// If we have an ephemeral app, abort the process of launching the resolved intent.
// Instead, launch the ephemeral installer. Once the installer is finished, it
// starts either the intent we resolved here [on install error] or the ephemeral
// app [on install success].
if (rInfo != null && rInfo.auxiliaryInfo != null) {
intent = createLaunchIntent(rInfo.auxiliaryInfo, request.ephemeralIntent,
callingPackage, callingFeatureId, verificationBundle, resolvedType, userId);
resolvedType = null;
callingUid = realCallingUid;
callingPid = realCallingPid;
// The ephemeral installer shouldn't get any permission grants
// intended for the original destination
intentGrants = null;
aInfo = mSupervisor.resolveActivity(intent, rInfo, startFlags, null /*profilerInfo*/);
}
final ActivityRecord r = new ActivityRecord.Builder(mService)
.setCaller(callerApp)
.setLaunchedFromPid(callingPid)
.setLaunchedFromUid(callingUid)
.setLaunchedFromPackage(callingPackage)
.setLaunchedFromFeature(callingFeatureId)
.setIntent(intent)
.setResolvedType(resolvedType)
.setActivityInfo(aInfo)
.setConfiguration(mService.getGlobalConfiguration())
.setResultTo(resultRecord)
.setResultWho(resultWho)
.setRequestCode(requestCode)
.setComponentSpecified(request.componentSpecified)
.setRootVoiceInteraction(voiceSession != null)
.setActivityOptions(checkedOptions)
.setSourceRecord(sourceRecord)
.build();
mLastStartActivityRecord = r;
if (r.appTimeTracker == null && sourceRecord != null) {
// If the caller didn't specify an explicit time tracker, we want to continue
// tracking under any it has.
r.appTimeTracker = sourceRecord.appTimeTracker;
}
// Only allow app switching to be resumed if activity is not a restricted background
// activity and target app is not home process, otherwise any background activity
// started in background task can stop home button protection mode.
// As the targeted app is not a home process and we don't need to wait for the 2nd
// activity to be started to resume app switching, we can just enable app switching
// directly.
WindowProcessController homeProcess = mService.mHomeProcess;
boolean isHomeProcess = homeProcess != null
&& aInfo.applicationInfo.uid == homeProcess.mUid;
if (!restrictedBgActivity && !isHomeProcess) {
mService.resumeAppSwitches();
}
mLastStartActivityResult = startActivityUnchecked(r, sourceRecord, voiceSession,
request.voiceInteractor, startFlags, true /* doResume */, checkedOptions, inTask,
restrictedBgActivity, intentGrants);
if (request.outActivity != null) {
request.outActivity[0] = mLastStartActivityRecord;
}
return mLastStartActivityResult;
}
/**
* Return true if background activity is really aborted.
*
* TODO(b/131748165): Refactor the logic so we don't need to call this method everywhere.
*/
private boolean handleBackgroundActivityAbort(ActivityRecord r) {
// TODO(b/131747138): Remove toast and refactor related code in R release.
final boolean abort = !mService.isBackgroundActivityStartsEnabled();
if (!abort) {
return false;
}
final ActivityRecord resultRecord = r.resultTo;
final String resultWho = r.resultWho;
int requestCode = r.requestCode;
if (resultRecord != null) {
resultRecord.sendResult(INVALID_UID, resultWho, requestCode, RESULT_CANCELED,
null /* data */, null /* dataGrants */);
}
// We pretend to the caller that it was really started to make it backward compatible, but
// they will just get a cancel result.
ActivityOptions.abort(r.getOptions());
return true;
}
static int getExternalResult(int result) {
// Aborted results are treated as successes externally, but we must track them internally.
return result != START_ABORTED ? result : START_SUCCESS;
}
/**
* Called when execution is complete. Sets state indicating completion and proceeds with
* recycling if appropriate.
*/
private void onExecutionComplete() {
mController.onExecutionComplete(this);
}
boolean shouldAbortBackgroundActivityStart(int callingUid, int callingPid,
final String callingPackage, int realCallingUid, int realCallingPid,
WindowProcessController callerApp, PendingIntentRecord originatingPendingIntent,
boolean allowBackgroundActivityStart, Intent intent) {
// don't abort for the most important UIDs
final int callingAppId = UserHandle.getAppId(callingUid);
if (callingUid == Process.ROOT_UID || callingAppId == Process.SYSTEM_UID
|| callingAppId == Process.NFC_UID) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Activity start allowed for important callingUid (" + callingUid + ")");
}
return false;
}
// Always allow home application to start activities.
if (mService.mHomeProcess != null && callingUid == mService.mHomeProcess.mUid) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Activity start allowed for home app callingUid (" + callingUid + ")");
}
return false;
}
// IME should always be allowed to start activity, like IME settings.
final WindowState imeWindow = mRootWindowContainer.getCurrentInputMethodWindow();
if (imeWindow != null && callingAppId == imeWindow.mOwnerUid) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Activity start allowed for active ime (" + callingUid + ")");
}
return false;
}
// This is used to block background activity launch even if the app is still
// visible to user after user clicking home button.
final boolean appSwitchAllowed = mService.getBalAppSwitchesAllowed();
// don't abort if the callingUid has a visible window or is a persistent system process
final int callingUidProcState = mService.mActiveUids.getUidState(callingUid);
final boolean callingUidHasAnyVisibleWindow = mService.hasActiveVisibleWindow(callingUid);
final boolean isCallingUidForeground = callingUidHasAnyVisibleWindow
|| callingUidProcState == ActivityManager.PROCESS_STATE_TOP
|| callingUidProcState == ActivityManager.PROCESS_STATE_BOUND_TOP;
final boolean isCallingUidPersistentSystemProcess =
callingUidProcState <= ActivityManager.PROCESS_STATE_PERSISTENT_UI;
// Normal apps with visible app window will be allowed to start activity if app switching
// is allowed, or apps like live wallpaper with non app visible window will be allowed.
if (((appSwitchAllowed || mService.mActiveUids.hasNonAppVisibleWindow(callingUid))
&& callingUidHasAnyVisibleWindow)
|| isCallingUidPersistentSystemProcess) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Activity start allowed: callingUidHasAnyVisibleWindow = " + callingUid
+ ", isCallingUidPersistentSystemProcess = "
+ isCallingUidPersistentSystemProcess);
}
return false;
}
// take realCallingUid into consideration
final int realCallingUidProcState = (callingUid == realCallingUid)
? callingUidProcState
: mService.mActiveUids.getUidState(realCallingUid);
final boolean realCallingUidHasAnyVisibleWindow = (callingUid == realCallingUid)
? callingUidHasAnyVisibleWindow
: mService.hasActiveVisibleWindow(realCallingUid);
final boolean isRealCallingUidForeground = (callingUid == realCallingUid)
? isCallingUidForeground
: realCallingUidHasAnyVisibleWindow
|| realCallingUidProcState == ActivityManager.PROCESS_STATE_TOP;
final int realCallingAppId = UserHandle.getAppId(realCallingUid);
final boolean isRealCallingUidPersistentSystemProcess = (callingUid == realCallingUid)
? isCallingUidPersistentSystemProcess
: (realCallingAppId == Process.SYSTEM_UID)
|| realCallingUidProcState <= ActivityManager.PROCESS_STATE_PERSISTENT_UI;
if (realCallingUid != callingUid) {
// don't abort if the realCallingUid has a visible window
// TODO(b/171459802): We should check appSwitchAllowed also
if (realCallingUidHasAnyVisibleWindow) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Activity start allowed: realCallingUid (" + realCallingUid
+ ") has visible (non-toast) window");
}
return false;
}
// if the realCallingUid is a persistent system process, abort if the IntentSender
// wasn't allowed to start an activity
if (isRealCallingUidPersistentSystemProcess && allowBackgroundActivityStart) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Activity start allowed: realCallingUid (" + realCallingUid
+ ") is persistent system process AND intent sender allowed "
+ "(allowBackgroundActivityStart = true)");
}
return false;
}
// don't abort if the realCallingUid is an associated companion app
if (mService.isAssociatedCompanionApp(UserHandle.getUserId(realCallingUid),
realCallingUid)) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Activity start allowed: realCallingUid (" + realCallingUid
+ ") is companion app");
}
return false;
}
}
// don't abort if the callingUid has START_ACTIVITIES_FROM_BACKGROUND permission
if (mService.checkPermission(START_ACTIVITIES_FROM_BACKGROUND, callingPid, callingUid)
== PERMISSION_GRANTED) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG,
"Background activity start allowed: START_ACTIVITIES_FROM_BACKGROUND "
+ "permission granted for uid "
+ callingUid);
}
return false;
}
// don't abort if the caller has the same uid as the recents component
if (mSupervisor.mRecentTasks.isCallerRecents(callingUid)) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Background activity start allowed: callingUid (" + callingUid
+ ") is recents");
}
return false;
}
// don't abort if the callingUid is the device owner
if (mService.isDeviceOwner(callingUid)) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Background activity start allowed: callingUid (" + callingUid
+ ") is device owner");
}
return false;
}
// don't abort if the callingUid has companion device
final int callingUserId = UserHandle.getUserId(callingUid);
if (mService.isAssociatedCompanionApp(callingUserId, callingUid)) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Background activity start allowed: callingUid (" + callingUid
+ ") is companion app");
}
return false;
}
// don't abort if the callingUid has SYSTEM_ALERT_WINDOW permission
if (mService.hasSystemAlertWindowPermission(callingUid, callingPid, callingPackage)) {
Slog.w(TAG, "Background activity start for " + callingPackage
+ " allowed because SYSTEM_ALERT_WINDOW permission is granted.");
return false;
}
// If we don't have callerApp at this point, no caller was provided to startActivity().
// That's the case for PendingIntent-based starts, since the creator's process might not be
// up and alive. If that's the case, we retrieve the WindowProcessController for the send()
// caller, so that we can make the decision based on its state.
int callerAppUid = callingUid;
if (callerApp == null) {
callerApp = mService.getProcessController(realCallingPid, realCallingUid);
callerAppUid = realCallingUid;
}
// don't abort if the callerApp or other processes of that uid are allowed in any way
if (callerApp != null) {
// first check the original calling process
if (callerApp.areBackgroundActivityStartsAllowed(appSwitchAllowed)) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG, "Background activity start allowed: callerApp process (pid = "
+ callerApp.getPid() + ", uid = " + callerAppUid + ") is allowed");
}
return false;
}
// only if that one wasn't allowed, check the other ones
final ArraySet<WindowProcessController> uidProcesses =
mService.mProcessMap.getProcesses(callerAppUid);
if (uidProcesses != null) {
for (int i = uidProcesses.size() - 1; i >= 0; i--) {
final WindowProcessController proc = uidProcesses.valueAt(i);
if (proc != callerApp
&& proc.areBackgroundActivityStartsAllowed(appSwitchAllowed)) {
if (DEBUG_ACTIVITY_STARTS) {
Slog.d(TAG,
"Background activity start allowed: process " + proc.getPid()
+ " from uid " + callerAppUid + " is allowed");
}
return false;
}
}
}
}
// anything that has fallen through would currently be aborted
Slog.w(TAG, "Background activity start [callingPackage: " + callingPackage
+ "; callingUid: " + callingUid
+ "; appSwitchAllowed: " + appSwitchAllowed
+ "; isCallingUidForeground: " + isCallingUidForeground
+ "; callingUidHasAnyVisibleWindow: " + callingUidHasAnyVisibleWindow
+ "; callingUidProcState: " + DebugUtils.valueToString(ActivityManager.class,
"PROCESS_STATE_", callingUidProcState)
+ "; isCallingUidPersistentSystemProcess: " + isCallingUidPersistentSystemProcess
+ "; realCallingUid: " + realCallingUid
+ "; isRealCallingUidForeground: " + isRealCallingUidForeground
+ "; realCallingUidHasAnyVisibleWindow: " + realCallingUidHasAnyVisibleWindow
+ "; realCallingUidProcState: " + DebugUtils.valueToString(ActivityManager.class,
"PROCESS_STATE_", realCallingUidProcState)
+ "; isRealCallingUidPersistentSystemProcess: "
+ isRealCallingUidPersistentSystemProcess
+ "; originatingPendingIntent: " + originatingPendingIntent
+ "; allowBackgroundActivityStart: " + allowBackgroundActivityStart
+ "; intent: " + intent
+ "; callerApp: " + callerApp
+ "; inVisibleTask: " + (callerApp != null && callerApp.hasActivityInVisibleTask())
+ "]");
// log aborted activity start to TRON
if (mService.isActivityStartsLoggingEnabled()) {
mSupervisor.getActivityMetricsLogger().logAbortedBgActivityStart(intent, callerApp,
callingUid, callingPackage, callingUidProcState, callingUidHasAnyVisibleWindow,
realCallingUid, realCallingUidProcState, realCallingUidHasAnyVisibleWindow,
(originatingPendingIntent != null));
}
return true;
}
/**
* Creates a launch intent for the given auxiliary resolution data.
*/
private @NonNull Intent createLaunchIntent(@Nullable AuxiliaryResolveInfo auxiliaryResponse,
Intent originalIntent, String callingPackage, @Nullable String callingFeatureId,
Bundle verificationBundle, String resolvedType, int userId) {
if (auxiliaryResponse != null && auxiliaryResponse.needsPhaseTwo) {
// request phase two resolution
PackageManagerInternal packageManager = mService.getPackageManagerInternalLocked();
boolean isRequesterInstantApp = packageManager.isInstantApp(callingPackage, userId);
packageManager.requestInstantAppResolutionPhaseTwo(
auxiliaryResponse, originalIntent, resolvedType, callingPackage,
callingFeatureId, isRequesterInstantApp, verificationBundle, userId);
}
return InstantAppResolver.buildEphemeralInstallerIntent(
originalIntent,
InstantAppResolver.sanitizeIntent(originalIntent),
auxiliaryResponse == null ? null : auxiliaryResponse.failureIntent,
callingPackage,
callingFeatureId,
verificationBundle,
resolvedType,
userId,
auxiliaryResponse == null ? null : auxiliaryResponse.installFailureActivity,
auxiliaryResponse == null ? null : auxiliaryResponse.token,
auxiliaryResponse != null && auxiliaryResponse.needsPhaseTwo,
auxiliaryResponse == null ? null : auxiliaryResponse.filters);
}
void postStartActivityProcessing(ActivityRecord r, int result,
Task startedActivityRootTask) {
if (!ActivityManager.isStartResultSuccessful(result)) {
if (mFrozeTaskList) {
// If we specifically froze the task list as part of starting an activity, then
// reset the frozen list state if it failed to start. This is normally otherwise
// called when the freeze-timeout has elapsed.
mSupervisor.mRecentTasks.resetFreezeTaskListReorderingOnTimeout();
}
}
if (ActivityManager.isStartResultFatalError(result)) {
return;
}
// We're waiting for an activity launch to finish, but that activity simply
// brought another activity to front. We must also handle the case where the task is already
// in the front as a result of the trampoline activity being in the same task (it will be
// considered focused as the trampoline will be finished). Let them know about this, so
// it waits for the new activity to become visible instead, {@link #waitResultIfNeeded}.
mSupervisor.reportWaitingActivityLaunchedIfNeeded(r, result);
final Task targetTask = r.getTask() != null
? r.getTask()
: mTargetTask;
if (startedActivityRootTask == null || targetTask == null) {
return;
}
final int clearTaskFlags = FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TASK;
boolean clearedTask = (mLaunchFlags & clearTaskFlags) == clearTaskFlags
&& mReuseTask != null;
if (result == START_TASK_TO_FRONT || result == START_DELIVERED_TO_TOP || clearedTask) {
// The activity was already running so it wasn't started, but either brought to the
// front or the new intent was delivered to it since it was already in front. Notify
// anyone interested in this piece of information.
final Task rootHomeTask = targetTask.getDisplayArea().getRootHomeTask();
final boolean homeTaskVisible = rootHomeTask != null
&& rootHomeTask.shouldBeVisible(null);
final ActivityRecord top = targetTask.getTopNonFinishingActivity();
final boolean visible = top != null && top.isVisible();
mService.getTaskChangeNotificationController().notifyActivityRestartAttempt(
targetTask.getTaskInfo(), homeTaskVisible, clearedTask, visible);
}
}
/**
* Compute the logical UID based on which the package manager would filter
* app components i.e. based on which the instant app policy would be applied
* because it is the logical calling UID.
*
* @param customCallingUid The UID on whose behalf to make the call.
* @param actualCallingUid The UID actually making the call.
* @param filterCallingUid The UID to be used to filter for instant apps.
* @return The logical UID making the call.
*/
static int computeResolveFilterUid(int customCallingUid, int actualCallingUid,
int filterCallingUid) {
return filterCallingUid != UserHandle.USER_NULL
? filterCallingUid
: (customCallingUid >= 0 ? customCallingUid : actualCallingUid);
}
/**
* Start an activity while most of preliminary checks has been done and caller has been
* confirmed that holds necessary permissions to do so.
* Here also ensures that the starting activity is removed if the start wasn't successful.
*/
private int startActivityUnchecked(final ActivityRecord r, ActivityRecord sourceRecord,
IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor,
int startFlags, boolean doResume, ActivityOptions options, Task inTask,
boolean restrictedBgActivity, NeededUriGrants intentGrants) {
int result = START_CANCELED;
final Task startedActivityRootTask;
// Create a transition now to record the original intent of actions taken within
// startActivityInner. Otherwise, logic in startActivityInner could start a different
// transition based on a sub-action.
// Only do the create here (and defer requestStart) since startActivityInner might abort.
final Transition newTransition = (!mService.getTransitionController().isCollecting()
&& mService.getTransitionController().getTransitionPlayer() != null)
? mService.getTransitionController().createTransition(TRANSIT_OPEN) : null;
IRemoteTransition remoteTransition = r.takeRemoteTransition();
if (newTransition != null && remoteTransition != null) {
newTransition.setRemoteTransition(remoteTransition);
}
mService.getTransitionController().collect(r);
try {
mService.deferWindowLayout();
Trace.traceBegin(Trace.TRACE_TAG_WINDOW_MANAGER, "startActivityInner");
result = startActivityInner(r, sourceRecord, voiceSession, voiceInteractor,
startFlags, doResume, options, inTask, restrictedBgActivity, intentGrants);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_WINDOW_MANAGER);
startedActivityRootTask = handleStartResult(r, result);
mService.continueWindowLayout();
mSupervisor.mUserLeaving = false;
// Transition housekeeping
if (!ActivityManager.isStartResultSuccessful(result)) {
if (newTransition != null) {
newTransition.abort();
}
} else {
if (!mAvoidMoveToFront && mDoResume
&& mRootWindowContainer.hasVisibleWindowAboveButDoesNotOwnNotificationShade(
r.launchedFromUid)) {
// If the UID launching the activity has a visible window on top of the
// notification shade and it's launching an activity that's going to be at the
// front, we should move the shade out of the way so the user can see it.
// We want to avoid the case where the activity is launched on top of a
// background task which is not moved to the front.
StatusBarManagerInternal statusBar = mService.getStatusBarManagerInternal();
if (statusBar != null) {
// This results in a async call since the interface is one-way
statusBar.collapsePanels();
}
}
if (result == START_SUCCESS || result == START_TASK_TO_FRONT) {
// The activity is started new rather than just brought forward, so record
// it as an existence change.
mService.getTransitionController().collectExistenceChange(r);
}
if (newTransition != null) {
mService.getTransitionController().requestStartTransition(newTransition,
mTargetTask, remoteTransition);
} else {
// Make the collecting transition wait until this request is ready.
mService.getTransitionController().setReady(false);
}
}
}
postStartActivityProcessing(r, result, startedActivityRootTask);
return result;
}
/**
* If the start result is success, ensure that the configuration of the started activity matches
* the current display. Otherwise clean up unassociated containers to avoid leakage.
*
* @return the root task where the successful started activity resides.
*/
private @Nullable Task handleStartResult(@NonNull ActivityRecord started, int result) {
final Task currentRootTask = started.getRootTask();
Task startedActivityRootTask = currentRootTask != null ? currentRootTask : mTargetRootTask;
if (ActivityManager.isStartResultSuccessful(result)) {
if (startedActivityRootTask != null) {
// If there is no state change (e.g. a resumed activity is reparented to top of
// another display) to trigger a visibility/configuration checking, we have to
// update the configuration for changing to different display.
final ActivityRecord currentTop = startedActivityRootTask.topRunningActivity();
if (currentTop != null && currentTop.shouldUpdateConfigForDisplayChanged()) {
mRootWindowContainer.ensureVisibilityAndConfig(
currentTop, currentTop.getDisplayId(),
true /* markFrozenIfConfigChanged */, false /* deferResume */);
}
}
return startedActivityRootTask;
}
// If we are not able to proceed, disassociate the activity from the task. Leaving an
// activity in an incomplete state can lead to issues, such as performing operations
// without a window container.
final Task rootTask = mStartActivity.getRootTask();
if (rootTask != null) {
mStartActivity.finishIfPossible("startActivity", true /* oomAdj */);
}
// Root task should also be detached from display and be removed if it's empty.
if (startedActivityRootTask != null && startedActivityRootTask.isAttached()
&& !startedActivityRootTask.hasActivity()
&& !startedActivityRootTask.isActivityTypeHome()) {
startedActivityRootTask.removeIfPossible("handleStartResult");
startedActivityRootTask = null;
}
return startedActivityRootTask;
}
/**
* Start an activity and determine if the activity should be adding to the top of an existing
* task or delivered new intent to an existing activity. Also manipulating the activity task
* onto requested or valid root-task/display.
*
* Note: This method should only be called from {@link #startActivityUnchecked}.
*/
// TODO(b/152429287): Make it easier to exercise code paths through startActivityInner
@VisibleForTesting
int startActivityInner(final ActivityRecord r, ActivityRecord sourceRecord,
IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor,
int startFlags, boolean doResume, ActivityOptions options, Task inTask,
boolean restrictedBgActivity, NeededUriGrants intentGrants) {
setInitialState(r, options, inTask, doResume, startFlags, sourceRecord, voiceSession,
voiceInteractor, restrictedBgActivity);
computeLaunchingTaskFlags();
computeSourceRootTask();
mIntent.setFlags(mLaunchFlags);
final Task reusedTask = getReusableTask();
// If requested, freeze the task list
if (mOptions != null && mOptions.freezeRecentTasksReordering()
&& mSupervisor.mRecentTasks.isCallerRecents(r.launchedFromUid)
&& !mSupervisor.mRecentTasks.isFreezeTaskListReorderingSet()) {
mFrozeTaskList = true;
mSupervisor.mRecentTasks.setFreezeTaskListReordering();
}
// Compute if there is an existing task that should be used for.
final Task targetTask = reusedTask != null ? reusedTask : computeTargetTask();
final boolean newTask = targetTask == null;
mTargetTask = targetTask;
computeLaunchParams(r, sourceRecord, targetTask);
// Check if starting activity on given task or on a new task is allowed.
int startResult = isAllowedToStart(r, newTask, targetTask);
if (startResult != START_SUCCESS) {
return startResult;
}
final ActivityRecord targetTaskTop = newTask
? null : targetTask.getTopNonFinishingActivity();
if (targetTaskTop != null) {
// Recycle the target task for this launch.
startResult = recycleTask(targetTask, targetTaskTop, reusedTask, intentGrants);
if (startResult != START_SUCCESS) {
return startResult;
}
} else {
mAddingToTask = true;
}
// If the activity being launched is the same as the one currently at the top, then
// we need to check if it should only be launched once.
final Task topRootTask = mPreferredTaskDisplayArea.getFocusedRootTask();
if (topRootTask != null) {
startResult = deliverToCurrentTopIfNeeded(topRootTask, intentGrants);
if (startResult != START_SUCCESS) {
return startResult;
}
}
if (mTargetRootTask == null) {
mTargetRootTask = getLaunchRootTask(mStartActivity, mLaunchFlags, targetTask, mOptions);
}
if (newTask) {
final Task taskToAffiliate = (mLaunchTaskBehind && mSourceRecord != null)
? mSourceRecord.getTask() : null;
setNewTask(taskToAffiliate);
} else if (mAddingToTask) {
addOrReparentStartingActivity(targetTask, "adding to task");
}
if (!mAvoidMoveToFront && mDoResume) {
mTargetRootTask.getRootTask().moveToFront("reuseOrNewTask", targetTask);
if (mOptions != null) {
if (mOptions.getTaskAlwaysOnTop()) {
mTargetRootTask.setAlwaysOnTop(true);
}
}
if (!mTargetRootTask.isTopRootTaskInDisplayArea() && mService.mInternal.isDreaming()) {
// Launching underneath dream activity (fullscreen, always-on-top). Run the launch-
// -behind transition so the Activity gets created and starts in visible state.
mLaunchTaskBehind = true;
r.mLaunchTaskBehind = true;
}
}
mService.mUgmInternal.grantUriPermissionUncheckedFromIntent(intentGrants,
mStartActivity.getUriPermissionsLocked());
if (mStartActivity.resultTo != null && mStartActivity.resultTo.info != null) {
// we need to resolve resultTo to a uid as grantImplicitAccess deals explicitly in UIDs
final PackageManagerInternal pmInternal =
mService.getPackageManagerInternalLocked();
final int resultToUid = pmInternal.getPackageUid(
mStartActivity.resultTo.info.packageName, 0 /* flags */,
mStartActivity.mUserId);
pmInternal.grantImplicitAccess(mStartActivity.mUserId, mIntent,
UserHandle.getAppId(mStartActivity.info.applicationInfo.uid) /*recipient*/,
resultToUid /*visible*/, true /*direct*/);
}
if (newTask) {
EventLogTags.writeWmCreateTask(mStartActivity.mUserId,
mStartActivity.getTask().mTaskId);
}
mStartActivity.logStartActivity(
EventLogTags.WM_CREATE_ACTIVITY, mStartActivity.getTask());
mTargetRootTask.mLastPausedActivity = null;
mRootWindowContainer.startPowerModeLaunchIfNeeded(
false /* forceSend */, mStartActivity);
final boolean startFromSamePackage;
if (sourceRecord != null && sourceRecord.mActivityComponent != null) {
startFromSamePackage = mStartActivity.mActivityComponent
.getPackageName().equals(sourceRecord.mActivityComponent.getPackageName());
} else {
startFromSamePackage = false;
}
mTargetRootTask.startActivityLocked(mStartActivity,
topRootTask != null ? topRootTask.getTopNonFinishingActivity() : null, newTask,
mKeepCurTransition, mOptions, startFromSamePackage);
if (mDoResume) {
final ActivityRecord topTaskActivity =
mStartActivity.getTask().topRunningActivityLocked();
if (!mTargetRootTask.isTopActivityFocusable()
|| (topTaskActivity != null && topTaskActivity.isTaskOverlay()
&& mStartActivity != topTaskActivity)) {
// If the activity is not focusable, we can't resume it, but still would like to
// make sure it becomes visible as it starts (this will also trigger entry
// animation). An example of this are PIP activities.
// Also, we don't want to resume activities in a task that currently has an overlay
// as the starting activity just needs to be in the visible paused state until the
// over is removed.
// Passing {@code null} as the start parameter ensures all activities are made
// visible.
mTargetRootTask.ensureActivitiesVisible(null /* starting */,
0 /* configChanges */, !PRESERVE_WINDOWS);
// Go ahead and tell window manager to execute app transition for this activity
// since the app transition will not be triggered through the resume channel.
mTargetRootTask.mDisplayContent.executeAppTransition();
} else {
// If the target root-task was not previously focusable (previous top running
// activity on that root-task was not visible) then any prior calls to move the
// root-task to the will not update the focused root-task. If starting the new
// activity now allows the task root-task to be focusable, then ensure that we
// now update the focused root-task accordingly.
if (mTargetRootTask.isTopActivityFocusable()
&& !mRootWindowContainer.isTopDisplayFocusedRootTask(mTargetRootTask)) {
mTargetRootTask.moveToFront("startActivityInner");
}
mRootWindowContainer.resumeFocusedTasksTopActivities(
mTargetRootTask, mStartActivity, mOptions);
}
}
mRootWindowContainer.updateUserRootTask(mStartActivity.mUserId, mTargetRootTask);
// Update the recent tasks list immediately when the activity starts
mSupervisor.mRecentTasks.add(mStartActivity.getTask());
mSupervisor.handleNonResizableTaskIfNeeded(mStartActivity.getTask(),
mPreferredWindowingMode, mPreferredTaskDisplayArea, mTargetRootTask);
return START_SUCCESS;
}
private Task computeTargetTask() {
if (mStartActivity.resultTo == null && mInTask == null && !mAddingToTask
&& (mLaunchFlags & FLAG_ACTIVITY_NEW_TASK) != 0) {
// A new task should be created instead of using existing one.
return null;
} else if (mSourceRecord != null) {
return mSourceRecord.getTask();
} else if (mInTask != null) {
return mInTask;
} else {
final Task rootTask = getLaunchRootTask(mStartActivity, mLaunchFlags, null /* task */,
mOptions);
final ActivityRecord top = rootTask.getTopNonFinishingActivity();
if (top != null) {
return top.getTask();
} else {
// Remove the root task if no activity in the root task.
rootTask.removeIfPossible("computeTargetTask");
}
}
return null;
}
private void computeLaunchParams(ActivityRecord r, ActivityRecord sourceRecord,
Task targetTask) {
final Task sourceRootTask = mSourceRootTask != null ? mSourceRootTask
: mRootWindowContainer.getTopDisplayFocusedRootTask();
if (sourceRootTask != null && sourceRootTask.inSplitScreenWindowingMode()
&& (mOptions == null
|| mOptions.getLaunchWindowingMode() == WINDOWING_MODE_UNDEFINED)) {
int windowingMode =
targetTask != null ? targetTask.getWindowingMode() : WINDOWING_MODE_UNDEFINED;
if ((mLaunchFlags & FLAG_ACTIVITY_LAUNCH_ADJACENT) != 0) {
if (sourceRootTask.inSplitScreenPrimaryWindowingMode()) {
windowingMode = WINDOWING_MODE_SPLIT_SCREEN_SECONDARY;
} else if (sourceRootTask.inSplitScreenSecondaryWindowingMode()) {
windowingMode = WINDOWING_MODE_SPLIT_SCREEN_PRIMARY;
}
}
if (mOptions == null) {
mOptions = ActivityOptions.makeBasic();
}
mOptions.setLaunchWindowingMode(windowingMode);
}
mSupervisor.getLaunchParamsController().calculate(targetTask, r.info.windowLayout, r,
sourceRecord, mOptions, mRequest, PHASE_BOUNDS, mLaunchParams);
mPreferredTaskDisplayArea = mLaunchParams.hasPreferredTaskDisplayArea()
? mLaunchParams.mPreferredTaskDisplayArea
: mRootWindowContainer.getDefaultTaskDisplayArea();
mPreferredWindowingMode = mLaunchParams.mWindowingMode;
}
private int isAllowedToStart(ActivityRecord r, boolean newTask, Task targetTask) {
if (mStartActivity.packageName == null) {
if (mStartActivity.resultTo != null) {
mStartActivity.resultTo.sendResult(INVALID_UID, mStartActivity.resultWho,
mStartActivity.requestCode, RESULT_CANCELED,
null /* data */, null /* dataGrants */);
}
ActivityOptions.abort(mOptions);
return START_CLASS_NOT_FOUND;
}
// Do not start home activity if it cannot be launched on preferred display. We are not
// doing this in ActivityTaskSupervisor#canPlaceEntityOnDisplay because it might
// fallback to launch on other displays.
if (r.isActivityTypeHome()) {
if (!mRootWindowContainer.canStartHomeOnDisplayArea(r.info, mPreferredTaskDisplayArea,
true /* allowInstrumenting */)) {
Slog.w(TAG, "Cannot launch home on display area " + mPreferredTaskDisplayArea);
return START_CANCELED;
}
}
// Do not allow background activity start in new task or in a task that uid is not present.
// Also do not allow pinned window to start single instance activity in background,
// as it will recreate the window and makes it to foreground.
boolean blockBalInTask = (newTask
|| !targetTask.isUidPresent(mCallingUid)
|| (LAUNCH_SINGLE_INSTANCE == mLaunchMode && targetTask.inPinnedWindowingMode()));
if (mRestrictedBgActivity && blockBalInTask
&& handleBackgroundActivityAbort(mStartActivity)) {
Slog.e(TAG, "Abort background activity starts from " + mCallingUid);
return START_ABORTED;
}
// When the flags NEW_TASK and CLEAR_TASK are set, then the task gets reused but still
// needs to be a lock task mode violation since the task gets cleared out and the device
// would otherwise leave the locked task.
final boolean isNewClearTask =
(mLaunchFlags & (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TASK))
== (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TASK);
if (!newTask) {
if (mService.getLockTaskController().isLockTaskModeViolation(targetTask,
isNewClearTask)) {
Slog.e(TAG, "Attempted Lock Task Mode violation mStartActivity=" + mStartActivity);
return START_RETURN_LOCK_TASK_MODE_VIOLATION;
}
} else {
if (mService.getLockTaskController().isNewTaskLockTaskModeViolation(mStartActivity)) {
Slog.e(TAG, "Attempted Lock Task Mode violation mStartActivity=" + mStartActivity);
return START_RETURN_LOCK_TASK_MODE_VIOLATION;
}
}
return START_SUCCESS;
}
/**
* Prepare the target task to be reused for this launch, which including:
* - Position the target task on valid root task on preferred display.
* - Comply to the specified activity launch flags
* - Determine whether need to add a new activity on top or just brought the task to front.
*/
@VisibleForTesting
int recycleTask(Task targetTask, ActivityRecord targetTaskTop, Task reusedTask,
NeededUriGrants intentGrants) {
// Should not recycle task which is from a different user, just adding the starting
// activity to the task.
if (targetTask.mUserId != mStartActivity.mUserId) {
mTargetRootTask = targetTask.getRootTask();
mAddingToTask = true;
return START_SUCCESS;
}
if (reusedTask != null) {
if (targetTask.intent == null) {
// This task was started because of movement of the activity based on
// affinity...
// Now that we are actually launching it, we can assign the base intent.
targetTask.setIntent(mStartActivity);
} else {
final boolean taskOnHome =
(mStartActivity.intent.getFlags() & FLAG_ACTIVITY_TASK_ON_HOME) != 0;
if (taskOnHome) {
targetTask.intent.addFlags(FLAG_ACTIVITY_TASK_ON_HOME);
} else {
targetTask.intent.removeFlags(FLAG_ACTIVITY_TASK_ON_HOME);
}
}
}
mRootWindowContainer.startPowerModeLaunchIfNeeded(false /* forceSend */,
targetTaskTop);
setTargetRootTaskIfNeeded(targetTaskTop);
// When there is a reused activity and the current result is a trampoline activity,
// set the reused activity as the result.
if (mLastStartActivityRecord != null
&& (mLastStartActivityRecord.finishing || mLastStartActivityRecord.noDisplay)) {
mLastStartActivityRecord = targetTaskTop;
}
if ((mStartFlags & START_FLAG_ONLY_IF_NEEDED) != 0) {
// We don't need to start a new activity, and the client said not to do anything
// if that is the case, so this is it! And for paranoia, make sure we have
// correctly resumed the top activity.
if (!mMovedToFront && mDoResume) {
ProtoLog.d(WM_DEBUG_TASKS, "Bring to front target: %s from %s", mTargetRootTask,
targetTaskTop);
mTargetRootTask.moveToFront("intentActivityFound");
}
resumeTargetRootTaskIfNeeded();
return START_RETURN_INTENT_TO_CALLER;
}
complyActivityFlags(targetTask,
reusedTask != null ? reusedTask.getTopNonFinishingActivity() : null, intentGrants);
if (mAddingToTask) {
return START_SUCCESS;
}
// The reusedActivity could be finishing, for example of starting an activity with
// FLAG_ACTIVITY_CLEAR_TOP flag. In that case, use the top running activity in the
// task instead.
targetTaskTop = targetTaskTop.finishing
? targetTask.getTopNonFinishingActivity()
: targetTaskTop;
// At this point we are certain we want the task moved to the front. If we need to dismiss
// any other always-on-top root tasks, now is the time to do it.
if (targetTaskTop.canTurnScreenOn() && mService.mInternal.isDreaming()) {
targetTaskTop.mTaskSupervisor.wakeUp("recycleTask#turnScreenOnFlag");
}
if (mMovedToFront) {
// We moved the task to front, use starting window to hide initial drawn delay.
targetTaskTop.showStartingWindow(true /* taskSwitch */);
} else if (mDoResume) {
// Make sure the root task and its belonging display are moved to topmost.
mTargetRootTask.moveToFront("intentActivityFound");
}
// We didn't do anything... but it was needed (a.k.a., client don't use that intent!)
// And for paranoia, make sure we have correctly resumed the top activity.
resumeTargetRootTaskIfNeeded();
mLastStartActivityRecord = targetTaskTop;
return mMovedToFront ? START_TASK_TO_FRONT : START_DELIVERED_TO_TOP;
}
/**
* Check if the activity being launched is the same as the one currently at the top and it
* should only be launched once.
*/
private int deliverToCurrentTopIfNeeded(Task topRootTask, NeededUriGrants intentGrants) {
final ActivityRecord top = topRootTask.topRunningNonDelayedActivityLocked(mNotTop);
final boolean dontStart = top != null
&& top.mActivityComponent.equals(mStartActivity.mActivityComponent)
&& top.mUserId == mStartActivity.mUserId
&& top.attachedToProcess()
&& ((mLaunchFlags & FLAG_ACTIVITY_SINGLE_TOP) != 0
|| LAUNCH_SINGLE_TOP == mLaunchMode)
// This allows home activity to automatically launch on secondary task display area
// when it was added, if home was the top activity on default task display area,
// instead of sending new intent to the home activity on default display area.
&& (!top.isActivityTypeHome() || top.getDisplayArea() == mPreferredTaskDisplayArea);
if (!dontStart) {
return START_SUCCESS;
}
// For paranoia, make sure we have correctly resumed the top activity.
topRootTask.mLastPausedActivity = null;
if (mDoResume) {
mRootWindowContainer.resumeFocusedTasksTopActivities();
}
ActivityOptions.abort(mOptions);
if ((mStartFlags & START_FLAG_ONLY_IF_NEEDED) != 0) {
// We don't need to start a new activity, and the client said not to do anything if
// that is the case, so this is it!
return START_RETURN_INTENT_TO_CALLER;
}
if (mStartActivity.resultTo != null) {
mStartActivity.resultTo.sendResult(INVALID_UID, mStartActivity.resultWho,
mStartActivity.requestCode, RESULT_CANCELED,
null /* data */, null /* dataGrants */);
mStartActivity.resultTo = null;
}
deliverNewIntent(top, intentGrants);
// Don't use mStartActivity.task to show the toast. We're not starting a new activity but
// reusing 'top'. Fields in mStartActivity may not be fully initialized.
mSupervisor.handleNonResizableTaskIfNeeded(top.getTask(),
mLaunchParams.mWindowingMode, mPreferredTaskDisplayArea, topRootTask);
return START_DELIVERED_TO_TOP;
}
/**
* Applying the launching flags to the task, which might clear few or all the activities in the
* task.
*/
private void complyActivityFlags(Task targetTask, ActivityRecord reusedActivity,
NeededUriGrants intentGrants) {
ActivityRecord targetTaskTop = targetTask.getTopNonFinishingActivity();
final boolean resetTask =
reusedActivity != null && (mLaunchFlags & FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0;
if (resetTask) {
targetTaskTop = mTargetRootTask.resetTaskIfNeeded(targetTaskTop, mStartActivity);
}
if ((mLaunchFlags & (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TASK))
== (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TASK)) {
// The caller has requested to completely replace any existing task with its new
// activity. Well that should not be too hard...
// Note: we must persist the {@link Task} first as intentActivity could be
// removed from calling performClearTaskLocked (For example, if it is being brought out
// of history or if it is finished immediately), thus disassociating the task. Also note
// that mReuseTask is reset as a result of {@link Task#performClearTaskLocked}
// launching another activity.
targetTask.performClearTaskLocked();
targetTask.setIntent(mStartActivity);
mAddingToTask = true;
} else if ((mLaunchFlags & FLAG_ACTIVITY_CLEAR_TOP) != 0
|| isDocumentLaunchesIntoExisting(mLaunchFlags)
|| isLaunchModeOneOf(LAUNCH_SINGLE_INSTANCE, LAUNCH_SINGLE_TASK,
LAUNCH_SINGLE_INSTANCE_PER_TASK)) {
// In this situation we want to remove all activities from the task up to the one
// being started. In most cases this means we are resetting the task to its initial
// state.
final ActivityRecord top = targetTask.performClearTaskForReuseLocked(mStartActivity,
mLaunchFlags);
if (top != null) {
if (top.isRootOfTask()) {
// Activity aliases may mean we use different intents for the top activity,
// so make sure the task now has the identity of the new intent.
top.getTask().setIntent(mStartActivity);
}
deliverNewIntent(top, intentGrants);
} else {
// A special case: we need to start the activity because it is not currently
// running, and the caller has asked to clear the current task to have this
// activity at the top.
mAddingToTask = true;
if (targetTask.getRootTask() == null) {
// Target root task got cleared when we all activities were removed above.
// Go ahead and reset it.
mTargetRootTask = getLaunchRootTask(mStartActivity, mLaunchFlags,
null /* task */, mOptions);
mTargetRootTask.addChild(targetTask, !mLaunchTaskBehind /* toTop */,
(mStartActivity.info.flags & FLAG_SHOW_FOR_ALL_USERS) != 0);
}
}
} else if ((mLaunchFlags & FLAG_ACTIVITY_CLEAR_TOP) == 0 && !mAddingToTask
&& (mLaunchFlags & FLAG_ACTIVITY_REORDER_TO_FRONT) != 0) {
// In this case, we are launching an activity in our own task that may
// already be running somewhere in the history, and we want to shuffle it to
// the front of the root task if so.
final ActivityRecord act =
targetTask.findActivityInHistory(mStartActivity.mActivityComponent);
if (act != null) {
final Task task = act.getTask();
task.moveActivityToFrontLocked(act);
act.updateOptionsLocked(mOptions);
deliverNewIntent(act, intentGrants);
mTargetRootTask.mLastPausedActivity = null;
} else {
mAddingToTask = true;
}
} else if (mStartActivity.mActivityComponent.equals(targetTask.realActivity)) {
if (targetTask == mInTask) {
// In this case we are bringing up an existing activity from a recent task. We
// don't need to add a new activity instance on top.
} else if (((mLaunchFlags & FLAG_ACTIVITY_SINGLE_TOP) != 0
|| LAUNCH_SINGLE_TOP == mLaunchMode)
&& targetTaskTop.mActivityComponent.equals(mStartActivity.mActivityComponent)
&& mStartActivity.resultTo == null) {
// In this case the top activity on the task is the same as the one being launched,
// so we take that as a request to bring the task to the foreground. If the top
// activity in the task is the root activity, deliver this new intent to it if it
// desires.
if (targetTaskTop.isRootOfTask()) {
targetTaskTop.getTask().setIntent(mStartActivity);
}
deliverNewIntent(targetTaskTop, intentGrants);
} else if (!targetTask.isSameIntentFilter(mStartActivity)) {
// In this case we are launching the root activity of the task, but with a
// different intent. We should start a new instance on top.
mAddingToTask = true;
} else if (reusedActivity == null) {
mAddingToTask = true;
}
} else if (!resetTask) {
// In this case an activity is being launched in to an existing task, without
// resetting that task. This is typically the situation of launching an activity
// from a notification or shortcut. We want to place the new activity on top of the
// current task.
mAddingToTask = true;
} else if (!targetTask.rootWasReset) {
// In this case we are launching into an existing task that has not yet been started
// from its front door. The current task has been brought to the front. Ideally,
// we'd probably like to place this new task at the bottom of its root task, but that's
// a little hard to do with the current organization of the code so for now we'll
// just drop it.
targetTask.setIntent(mStartActivity);
}
}
/**
* Resets the {@link ActivityStarter} state.
* @param clearRequest whether the request should be reset to default values.
*/
void reset(boolean clearRequest) {
mStartActivity = null;
mIntent = null;
mCallingUid = -1;
mOptions = null;
mRestrictedBgActivity = false;
mLaunchTaskBehind = false;
mLaunchFlags = 0;
mLaunchMode = INVALID_LAUNCH_MODE;
mLaunchParams.reset();
mNotTop = null;
mDoResume = false;
mStartFlags = 0;
mSourceRecord = null;
mPreferredTaskDisplayArea = null;
mPreferredWindowingMode = WINDOWING_MODE_UNDEFINED;
mInTask = null;
mAddingToTask = false;
mReuseTask = null;
mNewTaskInfo = null;
mNewTaskIntent = null;
mSourceRootTask = null;
mTargetRootTask = null;
mTargetTask = null;
mMovedToFront = false;
mNoAnimation = false;
mKeepCurTransition = false;
mAvoidMoveToFront = false;
mFrozeTaskList = false;
mVoiceSession = null;
mVoiceInteractor = null;
mIntentDelivered = false;
if (clearRequest) {
mRequest.reset();
}
}
private void setInitialState(ActivityRecord r, ActivityOptions options, Task inTask,
boolean doResume, int startFlags, ActivityRecord sourceRecord,
IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor,
boolean restrictedBgActivity) {
reset(false /* clearRequest */);
mStartActivity = r;
mIntent = r.intent;
mOptions = options;
mCallingUid = r.launchedFromUid;
mSourceRecord = sourceRecord;
mVoiceSession = voiceSession;
mVoiceInteractor = voiceInteractor;
mRestrictedBgActivity = restrictedBgActivity;
mLaunchParams.reset();
// Preferred display id is the only state we need for now and it could be updated again
// after we located a reusable task (which might be resided in another display).
mSupervisor.getLaunchParamsController().calculate(inTask, r.info.windowLayout, r,
sourceRecord, options, mRequest, PHASE_DISPLAY, mLaunchParams);
mPreferredTaskDisplayArea = mLaunchParams.hasPreferredTaskDisplayArea()
? mLaunchParams.mPreferredTaskDisplayArea
: mRootWindowContainer.getDefaultTaskDisplayArea();
mPreferredWindowingMode = mLaunchParams.mWindowingMode;
mLaunchMode = r.launchMode;
mLaunchFlags = adjustLaunchFlagsToDocumentMode(
r, LAUNCH_SINGLE_INSTANCE == mLaunchMode,
LAUNCH_SINGLE_TASK == mLaunchMode, mIntent.getFlags());
mLaunchTaskBehind = r.mLaunchTaskBehind
&& !isLaunchModeOneOf(LAUNCH_SINGLE_TASK, LAUNCH_SINGLE_INSTANCE)
&& (mLaunchFlags & FLAG_ACTIVITY_NEW_DOCUMENT) != 0;
if (mLaunchMode == LAUNCH_SINGLE_INSTANCE_PER_TASK) {
// Adding NEW_TASK flag for singleInstancePerTask launch mode activity, so that the
// activity won't be launched in source record's task.
mLaunchFlags |= FLAG_ACTIVITY_NEW_TASK;
}
sendNewTaskResultRequestIfNeeded();
if ((mLaunchFlags & FLAG_ACTIVITY_NEW_DOCUMENT) != 0 && r.resultTo == null) {
mLaunchFlags |= FLAG_ACTIVITY_NEW_TASK;
}
// If we are actually going to launch in to a new task, there are some cases where
// we further want to do multiple task.
if ((mLaunchFlags & FLAG_ACTIVITY_NEW_TASK) != 0) {
if (mLaunchTaskBehind
|| r.info.documentLaunchMode == DOCUMENT_LAUNCH_ALWAYS) {
mLaunchFlags |= FLAG_ACTIVITY_MULTIPLE_TASK;
}
}
// We'll invoke onUserLeaving before onPause only if the launching
// activity did not explicitly state that this is an automated launch.
mSupervisor.mUserLeaving = (mLaunchFlags & FLAG_ACTIVITY_NO_USER_ACTION) == 0;
if (DEBUG_USER_LEAVING) Slog.v(TAG_USER_LEAVING,
"startActivity() => mUserLeaving=" + mSupervisor.mUserLeaving);
// If the caller has asked not to resume at this point, we make note
// of this in the record so that we can skip it when trying to find
// the top running activity.
mDoResume = doResume;
if (!doResume || !r.okToShowLocked() || mLaunchTaskBehind) {
r.delayedResume = true;
mDoResume = false;
}
if (mOptions != null) {
if (mOptions.getLaunchTaskId() != INVALID_TASK_ID && mOptions.getTaskOverlay()) {
r.setTaskOverlay(true);
if (!mOptions.canTaskOverlayResume()) {
final Task task = mRootWindowContainer.anyTaskForId(
mOptions.getLaunchTaskId());
final ActivityRecord top = task != null
? task.getTopNonFinishingActivity() : null;
if (top != null && !top.isState(RESUMED)) {
// The caller specifies that we'd like to be avoided to be moved to the
// front, so be it!
mDoResume = false;
mAvoidMoveToFront = true;
}
}
} else if (mOptions.getAvoidMoveToFront()) {
mDoResume = false;
mAvoidMoveToFront = true;
}
mTargetRootTask = Task.fromWindowContainerToken(mOptions.getLaunchRootTask());
}
mNotTop = (mLaunchFlags & FLAG_ACTIVITY_PREVIOUS_IS_TOP) != 0 ? sourceRecord : null;
mInTask = inTask;
// In some flows in to this function, we retrieve the task record and hold on to it
// without a lock before calling back in to here... so the task at this point may
// not actually be in recents. Check for that, and if it isn't in recents just
// consider it invalid.
if (inTask != null && !inTask.inRecents) {
Slog.w(TAG, "Starting activity in task not in recents: " + inTask);
mInTask = null;
}
mStartFlags = startFlags;
// If the onlyIfNeeded flag is set, then we can do this if the activity being launched
// is the same as the one making the call... or, as a special case, if we do not know
// the caller then we count the current top activity as the caller.
if ((startFlags & START_FLAG_ONLY_IF_NEEDED) != 0) {
ActivityRecord checkedCaller = sourceRecord;
if (checkedCaller == null) {
Task topFocusedRootTask = mRootWindowContainer.getTopDisplayFocusedRootTask();
if (topFocusedRootTask != null) {
checkedCaller = topFocusedRootTask.topRunningNonDelayedActivityLocked(mNotTop);
}
}
if (checkedCaller == null
|| !checkedCaller.mActivityComponent.equals(r.mActivityComponent)) {
// Caller is not the same as launcher, so always needed.
mStartFlags &= ~START_FLAG_ONLY_IF_NEEDED;
}
}
mNoAnimation = (mLaunchFlags & FLAG_ACTIVITY_NO_ANIMATION) != 0;
if (mRestrictedBgActivity && !mService.isBackgroundActivityStartsEnabled()) {
mAvoidMoveToFront = true;
mDoResume = false;
}
}
private void sendNewTaskResultRequestIfNeeded() {
if (mStartActivity.resultTo != null && (mLaunchFlags & FLAG_ACTIVITY_NEW_TASK) != 0) {
// For whatever reason this activity is being launched into a new task...
// yet the caller has requested a result back. Well, that is pretty messed up,
// so instead immediately send back a cancel and let the new task continue launched
// as normal without a dependency on its originator.
Slog.w(TAG, "Activity is launching as a new task, so cancelling activity result.");
mStartActivity.resultTo.sendResult(INVALID_UID, mStartActivity.resultWho,
mStartActivity.requestCode, RESULT_CANCELED,
null /* data */, null /* dataGrants */);
mStartActivity.resultTo = null;
}
}
private void computeLaunchingTaskFlags() {
// If the caller is not coming from another activity, but has given us an explicit task into
// which they would like us to launch the new activity, then let's see about doing that.
if (mSourceRecord == null && mInTask != null && mInTask.getRootTask() != null) {
final Intent baseIntent = mInTask.getBaseIntent();
final ActivityRecord root = mInTask.getRootActivity();
if (baseIntent == null) {
ActivityOptions.abort(mOptions);
throw new IllegalArgumentException("Launching into task without base intent: "
+ mInTask);
}
// If this task is empty, then we are adding the first activity -- it
// determines the root, and must be launching as a NEW_TASK.
if (isLaunchModeOneOf(LAUNCH_SINGLE_INSTANCE, LAUNCH_SINGLE_TASK)) {
if (!baseIntent.getComponent().equals(mStartActivity.intent.getComponent())) {
ActivityOptions.abort(mOptions);
throw new IllegalArgumentException("Trying to launch singleInstance/Task "
+ mStartActivity + " into different task " + mInTask);
}
if (root != null) {
ActivityOptions.abort(mOptions);
throw new IllegalArgumentException("Caller with mInTask " + mInTask
+ " has root " + root + " but target is singleInstance/Task");
}
}
// If task is empty, then adopt the interesting intent launch flags in to the
// activity being started.
if (root == null) {
final int flagsOfInterest = FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_MULTIPLE_TASK
| FLAG_ACTIVITY_NEW_DOCUMENT | FLAG_ACTIVITY_RETAIN_IN_RECENTS;
mLaunchFlags = (mLaunchFlags & ~flagsOfInterest)
| (baseIntent.getFlags() & flagsOfInterest);
mIntent.setFlags(mLaunchFlags);
mInTask.setIntent(mStartActivity);
mAddingToTask = true;
// If the task is not empty and the caller is asking to start it as the root of
// a new task, then we don't actually want to start this on the task. We will
// bring the task to the front, and possibly give it a new intent.
} else if ((mLaunchFlags & FLAG_ACTIVITY_NEW_TASK) != 0) {
mAddingToTask = false;
} else {
mAddingToTask = true;
}
mReuseTask = mInTask;
} else {
mInTask = null;
// Launch ResolverActivity in the source task, so that it stays in the task bounds
// when in freeform workspace.
// Also put noDisplay activities in the source task. These by itself can be placed
// in any task/root-task, however it could launch other activities like
// ResolverActivity, and we want those to stay in the original task.
if ((mStartActivity.isResolverOrDelegateActivity() || mStartActivity.noDisplay)
&& mSourceRecord != null && mSourceRecord.inFreeformWindowingMode()) {
mAddingToTask = true;
}
}
if (mInTask == null) {
if (mSourceRecord == null) {
// This activity is not being started from another... in this
// case we -always- start a new task.
if ((mLaunchFlags & FLAG_ACTIVITY_NEW_TASK) == 0 && mInTask == null) {
Slog.w(TAG, "startActivity called from non-Activity context; forcing " +
"Intent.FLAG_ACTIVITY_NEW_TASK for: " + mIntent);
mLaunchFlags |= FLAG_ACTIVITY_NEW_TASK;
}
} else if (mSourceRecord.launchMode == LAUNCH_SINGLE_INSTANCE) {
// The original activity who is starting us is running as a single
// instance... this new activity it is starting must go on its
// own task.
mLaunchFlags |= FLAG_ACTIVITY_NEW_TASK;
} else if (isLaunchModeOneOf(LAUNCH_SINGLE_INSTANCE, LAUNCH_SINGLE_TASK)) {
// The activity being started is a single instance... it always
// gets launched into its own task.
mLaunchFlags |= FLAG_ACTIVITY_NEW_TASK;
}
}
}
private void computeSourceRootTask() {
if (mSourceRecord == null) {
mSourceRootTask = null;
return;
}
if (!mSourceRecord.finishing) {
mSourceRootTask = mSourceRecord.getRootTask();
return;
}
// If the source is finishing, we can't further count it as our source. This is because the
// task it is associated with may now be empty and on its way out, so we don't want to
// blindly throw it in to that task. Instead we will take the NEW_TASK flow and try to find
// a task for it. But save the task information so it can be used when creating the new task.
if ((mLaunchFlags & FLAG_ACTIVITY_NEW_TASK) == 0) {
Slog.w(TAG, "startActivity called from finishing " + mSourceRecord
+ "; forcing " + "Intent.FLAG_ACTIVITY_NEW_TASK for: " + mIntent);
mLaunchFlags |= FLAG_ACTIVITY_NEW_TASK;
mNewTaskInfo = mSourceRecord.info;
// It is not guaranteed that the source record will have a task associated with it. For,
// example, if this method is being called for processing a pending activity launch, it
// is possible that the activity has been removed from the task after the launch was
// enqueued.
final Task sourceTask = mSourceRecord.getTask();
mNewTaskIntent = sourceTask != null ? sourceTask.intent : null;
}
mSourceRecord = null;
mSourceRootTask = null;
}
/**
* Decide whether the new activity should be inserted into an existing task. Returns null
* if not or an ActivityRecord with the task into which the new activity should be added.
*/
private Task getReusableTask() {
// If a target task is specified, try to reuse that one
if (mOptions != null && mOptions.getLaunchTaskId() != INVALID_TASK_ID) {
Task launchTask = mRootWindowContainer.anyTaskForId(mOptions.getLaunchTaskId());
if (launchTask != null) {
return launchTask;
}
return null;
}
// We may want to try to place the new activity in to an existing task. We always
// do this if the target activity is singleTask or singleInstance; we will also do
// this if NEW_TASK has been requested, and there is not an additional qualifier telling
// us to still place it in a new task: multi task, always doc mode, or being asked to
// launch this as a new task behind the current one.
boolean putIntoExistingTask = ((mLaunchFlags & FLAG_ACTIVITY_NEW_TASK) != 0 &&
(mLaunchFlags & FLAG_ACTIVITY_MULTIPLE_TASK) == 0)
|| isLaunchModeOneOf(LAUNCH_SINGLE_INSTANCE, LAUNCH_SINGLE_TASK);
// If bring to front is requested, and no result is requested and we have not been given
// an explicit task to launch in to, and we can find a task that was started with this
// same component, then instead of launching bring that one to the front.
putIntoExistingTask &= mInTask == null && mStartActivity.resultTo == null;
ActivityRecord intentActivity = null;
if (putIntoExistingTask) {
if (LAUNCH_SINGLE_INSTANCE == mLaunchMode) {
// There can be one and only one instance of single instance activity in the
// history, and it is always in its own unique task, so we do a special search.
intentActivity = mRootWindowContainer.findActivity(mIntent, mStartActivity.info,
mStartActivity.isActivityTypeHome());
} else if ((mLaunchFlags & FLAG_ACTIVITY_LAUNCH_ADJACENT) != 0) {
// For the launch adjacent case we only want to put the activity in an existing
// task if the activity already exists in the history.
intentActivity = mRootWindowContainer.findActivity(mIntent, mStartActivity.info,
!(LAUNCH_SINGLE_TASK == mLaunchMode));
} else {
// Otherwise find the best task to put the activity in.
intentActivity =
mRootWindowContainer.findTask(mStartActivity, mPreferredTaskDisplayArea);
}
}
if (intentActivity != null && mLaunchMode == LAUNCH_SINGLE_INSTANCE_PER_TASK
&& !intentActivity.getTask().getRootActivity().mActivityComponent.equals(
mStartActivity.mActivityComponent)) {
// The task could be selected due to same task affinity. Do not reuse the task while
// starting the singleInstancePerTask activity if it is not the task root activity.
intentActivity = null;
}
if (intentActivity != null
&& (mStartActivity.isActivityTypeHome() || intentActivity.isActivityTypeHome())
&& intentActivity.getDisplayArea() != mPreferredTaskDisplayArea) {
// Do not reuse home activity on other display areas.
intentActivity = null;
}
return intentActivity != null ? intentActivity.getTask() : null;
}
/**
* Figure out which task and activity to bring to front when we have found an existing matching
* activity record in history. May also clear the task if needed.
* @param intentActivity Existing matching activity.
* @return {@link ActivityRecord} brought to front.
*/
private void setTargetRootTaskIfNeeded(ActivityRecord intentActivity) {
mTargetRootTask = intentActivity.getRootTask();
mTargetRootTask.mLastPausedActivity = null;
Task intentTask = intentActivity.getTask();
// If the target task is not in the front, then we need to bring it to the front...
// except... well, with SINGLE_TASK_LAUNCH it's not entirely clear. We'd like to have
// the same behavior as if a new instance was being started, which means not bringing it
// to the front if the caller is not itself in the front.
final boolean differentTopTask;
if (mTargetRootTask.getDisplayArea() == mPreferredTaskDisplayArea) {
final Task focusRootTask = mTargetRootTask.mDisplayContent.getFocusedRootTask();
final ActivityRecord curTop = (focusRootTask == null)
? null : focusRootTask.topRunningNonDelayedActivityLocked(mNotTop);
final Task topTask = curTop != null ? curTop.getTask() : null;
differentTopTask = topTask != intentTask
|| (focusRootTask != null && topTask != focusRootTask.getTopMostTask());
} else {
// The existing task should always be different from those in other displays.
differentTopTask = true;
}
if (differentTopTask && !mAvoidMoveToFront) {
mStartActivity.intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
if (mSourceRecord == null || (mSourceRootTask.getTopNonFinishingActivity() != null
&& mSourceRootTask.getTopNonFinishingActivity().getTask()
== mSourceRecord.getTask())) {
// We really do want to push this one into the user's face, right now.
if (mLaunchTaskBehind && mSourceRecord != null) {
intentActivity.setTaskToAffiliateWith(mSourceRecord.getTask());
}
final Task launchRootTask = getLaunchRootTask(mStartActivity, mLaunchFlags,
intentTask, mOptions);
if (launchRootTask == null || launchRootTask == mTargetRootTask) {
// TODO(b/151572268): Figure out a better way to move tasks in above 2-levels
// tasks hierarchies.
if (mTargetRootTask != intentTask
&& mTargetRootTask != intentTask.getParent().asTask()) {
intentTask.getParent().positionChildAt(POSITION_TOP, intentTask,
false /* includingParents */);
intentTask = intentTask.getParent().asTask();
}
// If the task is in multi-windowing mode, the activity may already be on
// the top (visible to user but not the global top), then the result code
// should be START_DELIVERED_TO_TOP instead of START_TASK_TO_FRONT.
final boolean wasTopOfVisibleRootTask = intentActivity.mVisibleRequested
&& intentActivity == mTargetRootTask.topRunningActivity();
// We only want to move to the front, if we aren't going to launch on a
// different root task. If we launch on a different root task, we will put the
// task on top there.
// Defer resuming the top activity while moving task to top, since the
// current task-top activity may not be the activity that should be resumed.
mTargetRootTask.moveTaskToFront(intentTask, mNoAnimation, mOptions,
mStartActivity.appTimeTracker, DEFER_RESUME,
"bringingFoundTaskToFront");
mMovedToFront = !wasTopOfVisibleRootTask;
} else {
intentTask.reparent(launchRootTask, ON_TOP, REPARENT_MOVE_ROOT_TASK_TO_FRONT,
ANIMATE, DEFER_RESUME, "reparentToTargetRootTask");
mMovedToFront = true;
}
mOptions = null;
}
}
if (mPreferredWindowingMode != WINDOWING_MODE_UNDEFINED
&& intentTask.getWindowingMode() != mPreferredWindowingMode) {
intentTask.setWindowingMode(mPreferredWindowingMode);
}
// Update the target's launch cookie to those specified in the options if set
if (mStartActivity.mLaunchCookie != null) {
intentActivity.mLaunchCookie = mStartActivity.mLaunchCookie;
}
// Need to update mTargetRootTask because if task was moved out of it, the original root
// task may be destroyed.
mTargetRootTask = intentActivity.getRootTask();
mSupervisor.handleNonResizableTaskIfNeeded(intentTask, WINDOWING_MODE_UNDEFINED,
mRootWindowContainer.getDefaultTaskDisplayArea(), mTargetRootTask);
}
private void resumeTargetRootTaskIfNeeded() {
if (mDoResume) {
final ActivityRecord next = mTargetRootTask.topRunningActivity(
true /* focusableOnly */);
if (next != null) {
next.setCurrentLaunchCanTurnScreenOn(true);
}
if (mTargetRootTask.isFocusable()) {
mRootWindowContainer.resumeFocusedTasksTopActivities(mTargetRootTask, null,
mOptions);
} else {
mRootWindowContainer.ensureActivitiesVisible(null, 0, !PRESERVE_WINDOWS);
}
} else {
ActivityOptions.abort(mOptions);
}
mRootWindowContainer.updateUserRootTask(mStartActivity.mUserId, mTargetRootTask);
}
private void setNewTask(Task taskToAffiliate) {
final boolean toTop = !mLaunchTaskBehind && !mAvoidMoveToFront;
final Task task = mTargetRootTask.reuseOrCreateTask(
mNewTaskInfo != null ? mNewTaskInfo : mStartActivity.info,
mNewTaskIntent != null ? mNewTaskIntent : mIntent, mVoiceSession,
mVoiceInteractor, toTop, mStartActivity, mSourceRecord, mOptions);
mService.getTransitionController().collectExistenceChange(task);
addOrReparentStartingActivity(task, "setTaskFromReuseOrCreateNewTask - mReuseTask");
ProtoLog.v(WM_DEBUG_TASKS, "Starting new activity %s in new task %s",
mStartActivity, mStartActivity.getTask());
if (taskToAffiliate != null) {
mStartActivity.setTaskToAffiliateWith(taskToAffiliate);
}
}
private void deliverNewIntent(ActivityRecord activity, NeededUriGrants intentGrants) {
if (mIntentDelivered) {
return;
}
activity.logStartActivity(EventLogTags.WM_NEW_INTENT, activity.getTask());
activity.deliverNewIntentLocked(mCallingUid, mStartActivity.intent, intentGrants,
mStartActivity.launchedFromPackage);
mIntentDelivered = true;
}
private void addOrReparentStartingActivity(Task parent, String reason) {
if (mStartActivity.getTask() == null || mStartActivity.getTask() == parent) {
parent.addChild(mStartActivity);
} else {
mStartActivity.reparent(parent, parent.getChildCount() /* top */, reason);
}
}
private int adjustLaunchFlagsToDocumentMode(ActivityRecord r, boolean launchSingleInstance,
boolean launchSingleTask, int launchFlags) {
if ((launchFlags & Intent.FLAG_ACTIVITY_NEW_DOCUMENT) != 0 &&
(launchSingleInstance || launchSingleTask)) {
// We have a conflict between the Intent and the Activity manifest, manifest wins.
Slog.i(TAG, "Ignoring FLAG_ACTIVITY_NEW_DOCUMENT, launchMode is " +
"\"singleInstance\" or \"singleTask\"");
launchFlags &=
~(Intent.FLAG_ACTIVITY_NEW_DOCUMENT | FLAG_ACTIVITY_MULTIPLE_TASK);
} else {
switch (r.info.documentLaunchMode) {
case ActivityInfo.DOCUMENT_LAUNCH_NONE:
break;
case ActivityInfo.DOCUMENT_LAUNCH_INTO_EXISTING:
launchFlags |= Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
break;
case ActivityInfo.DOCUMENT_LAUNCH_ALWAYS:
launchFlags |= Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
break;
case ActivityInfo.DOCUMENT_LAUNCH_NEVER:
if (mLaunchMode == LAUNCH_SINGLE_INSTANCE_PER_TASK) {
// Remove MULTIPLE_TASK flag along with NEW_DOCUMENT only if NEW_DOCUMENT
// is set, otherwise we still want to keep the MULTIPLE_TASK flag (if
// any) for singleInstancePerTask that the multiple tasks can be created,
// or a singleInstancePerTask activity is basically the same as a
// singleTask activity when documentLaunchMode set to never.
if ((launchFlags & Intent.FLAG_ACTIVITY_NEW_DOCUMENT) != 0) {
launchFlags &= ~(Intent.FLAG_ACTIVITY_NEW_DOCUMENT
| FLAG_ACTIVITY_MULTIPLE_TASK);
}
} else {
// TODO(b/184903976): Should FLAG_ACTIVITY_MULTIPLE_TASK always be
// removed for document-never activity?
launchFlags &=
~(Intent.FLAG_ACTIVITY_NEW_DOCUMENT | FLAG_ACTIVITY_MULTIPLE_TASK);
}
break;
}
}
return launchFlags;
}
private Task getLaunchRootTask(ActivityRecord r, int launchFlags, Task task,
ActivityOptions aOptions) {
// We are reusing a task, keep the root task!
if (mReuseTask != null) {
return mReuseTask.getRootTask();
}
final boolean onTop =
(aOptions == null || !aOptions.getAvoidMoveToFront()) && !mLaunchTaskBehind;
return mRootWindowContainer.getLaunchRootTask(r, aOptions, task, onTop, mLaunchParams,
mRequest.realCallingPid, mRequest.realCallingUid);
}
private boolean isLaunchModeOneOf(int mode1, int mode2) {
return mode1 == mLaunchMode || mode2 == mLaunchMode;
}
private boolean isLaunchModeOneOf(int mode1, int mode2, int mode3) {
return mode1 == mLaunchMode || mode2 == mLaunchMode || mode3 == mLaunchMode;
}
static boolean isDocumentLaunchesIntoExisting(int flags) {
return (flags & Intent.FLAG_ACTIVITY_NEW_DOCUMENT) != 0 &&
(flags & Intent.FLAG_ACTIVITY_MULTIPLE_TASK) == 0;
}
ActivityStarter setIntent(Intent intent) {
mRequest.intent = intent;
return this;
}
Intent getIntent() {
return mRequest.intent;
}
ActivityStarter setIntentGrants(NeededUriGrants intentGrants) {
mRequest.intentGrants = intentGrants;
return this;
}
ActivityStarter setReason(String reason) {
mRequest.reason = reason;
return this;
}
ActivityStarter setCaller(IApplicationThread caller) {
mRequest.caller = caller;
return this;
}
ActivityStarter setResolvedType(String type) {
mRequest.resolvedType = type;
return this;
}
ActivityStarter setActivityInfo(ActivityInfo info) {
mRequest.activityInfo = info;
return this;
}
ActivityStarter setResolveInfo(ResolveInfo info) {
mRequest.resolveInfo = info;
return this;
}
ActivityStarter setVoiceSession(IVoiceInteractionSession voiceSession) {
mRequest.voiceSession = voiceSession;
return this;
}
ActivityStarter setVoiceInteractor(IVoiceInteractor voiceInteractor) {
mRequest.voiceInteractor = voiceInteractor;
return this;
}
ActivityStarter setResultTo(IBinder resultTo) {
mRequest.resultTo = resultTo;
return this;
}
ActivityStarter setResultWho(String resultWho) {
mRequest.resultWho = resultWho;
return this;
}
ActivityStarter setRequestCode(int requestCode) {
mRequest.requestCode = requestCode;
return this;
}
/**
* Sets the pid of the caller who originally started the activity.
*
* Normally, the pid/uid would be the calling pid from the binder call.
* However, in case of a {@link PendingIntent}, the pid/uid pair of the caller is considered
* the original entity that created the pending intent, in contrast to setRealCallingPid/Uid,
* which represents the entity who invoked pending intent via {@link PendingIntent#send}.
*/
ActivityStarter setCallingPid(int pid) {
mRequest.callingPid = pid;
return this;
}
/**
* Sets the uid of the caller who originally started the activity.
*
* @see #setCallingPid
*/
ActivityStarter setCallingUid(int uid) {
mRequest.callingUid = uid;
return this;
}
ActivityStarter setCallingPackage(String callingPackage) {
mRequest.callingPackage = callingPackage;
return this;
}
ActivityStarter setCallingFeatureId(String callingFeatureId) {
mRequest.callingFeatureId = callingFeatureId;
return this;
}
/**
* Sets the pid of the caller who requested to launch the activity.
*
* The pid/uid represents the caller who launches the activity in this request.
* It will almost same as setCallingPid/Uid except when processing {@link PendingIntent}:
* the pid/uid will be the caller who called {@link PendingIntent#send()}.
*
* @see #setCallingPid
*/
ActivityStarter setRealCallingPid(int pid) {
mRequest.realCallingPid = pid;
return this;
}
/**
* Sets the uid of the caller who requested to launch the activity.
*
* @see #setRealCallingPid
*/
ActivityStarter setRealCallingUid(int uid) {
mRequest.realCallingUid = uid;
return this;
}
ActivityStarter setStartFlags(int startFlags) {
mRequest.startFlags = startFlags;
return this;
}
ActivityStarter setActivityOptions(SafeActivityOptions options) {
mRequest.activityOptions = options;
return this;
}
ActivityStarter setActivityOptions(Bundle bOptions) {
return setActivityOptions(SafeActivityOptions.fromBundle(bOptions));
}
ActivityStarter setIgnoreTargetSecurity(boolean ignoreTargetSecurity) {
mRequest.ignoreTargetSecurity = ignoreTargetSecurity;
return this;
}
ActivityStarter setFilterCallingUid(int filterCallingUid) {
mRequest.filterCallingUid = filterCallingUid;
return this;
}
ActivityStarter setComponentSpecified(boolean componentSpecified) {
mRequest.componentSpecified = componentSpecified;
return this;
}
ActivityStarter setOutActivity(ActivityRecord[] outActivity) {
mRequest.outActivity = outActivity;
return this;
}
ActivityStarter setInTask(Task inTask) {
mRequest.inTask = inTask;
return this;
}
ActivityStarter setWaitResult(WaitResult result) {
mRequest.waitResult = result;
return this;
}
ActivityStarter setProfilerInfo(ProfilerInfo info) {
mRequest.profilerInfo = info;
return this;
}
ActivityStarter setGlobalConfiguration(Configuration config) {
mRequest.globalConfig = config;
return this;
}
ActivityStarter setUserId(int userId) {
mRequest.userId = userId;
return this;
}
ActivityStarter setAllowPendingRemoteAnimationRegistryLookup(boolean allowLookup) {
mRequest.allowPendingRemoteAnimationRegistryLookup = allowLookup;
return this;
}
ActivityStarter setOriginatingPendingIntent(PendingIntentRecord originatingPendingIntent) {
mRequest.originatingPendingIntent = originatingPendingIntent;
return this;
}
ActivityStarter setAllowBackgroundActivityStart(boolean allowBackgroundActivityStart) {
mRequest.allowBackgroundActivityStart = allowBackgroundActivityStart;
return this;
}
void dump(PrintWriter pw, String prefix) {
prefix = prefix + " ";
pw.print(prefix);
pw.print("mCurrentUser=");
pw.println(mRootWindowContainer.mCurrentUser);
pw.print(prefix);
pw.print("mLastStartReason=");
pw.println(mLastStartReason);
pw.print(prefix);
pw.print("mLastStartActivityTimeMs=");
pw.println(DateFormat.getDateTimeInstance().format(new Date(mLastStartActivityTimeMs)));
pw.print(prefix);
pw.print("mLastStartActivityResult=");
pw.println(mLastStartActivityResult);
if (mLastStartActivityRecord != null) {
pw.print(prefix);
pw.println("mLastStartActivityRecord:");
mLastStartActivityRecord.dump(pw, prefix + " ", true /* dumpAll */);
}
if (mStartActivity != null) {
pw.print(prefix);
pw.println("mStartActivity:");
mStartActivity.dump(pw, prefix + " ", true /* dumpAll */);
}
if (mIntent != null) {
pw.print(prefix);
pw.print("mIntent=");
pw.println(mIntent);
}
if (mOptions != null) {
pw.print(prefix);
pw.print("mOptions=");
pw.println(mOptions);
}
pw.print(prefix);
pw.print("mLaunchSingleTop=");
pw.print(LAUNCH_SINGLE_TOP == mLaunchMode);
pw.print(" mLaunchSingleInstance=");
pw.print(LAUNCH_SINGLE_INSTANCE == mLaunchMode);
pw.print(" mLaunchSingleTask=");
pw.println(LAUNCH_SINGLE_TASK == mLaunchMode);
pw.print(prefix);
pw.print("mLaunchFlags=0x");
pw.print(Integer.toHexString(mLaunchFlags));
pw.print(" mDoResume=");
pw.print(mDoResume);
pw.print(" mAddingToTask=");
pw.println(mAddingToTask);
}
}