| /* |
| * Copyright (C) 2019 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.car.am; |
| |
| import static android.app.ActivityTaskManager.INVALID_TASK_ID; |
| import static android.os.Process.INVALID_UID; |
| import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG; |
| |
| import static com.android.car.CarLog.TAG_AM; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.UserIdInt; |
| import android.app.ActivityManager; |
| import android.app.ActivityManager.StackInfo; |
| import android.app.ActivityOptions; |
| import android.app.IActivityManager; |
| import android.app.IProcessObserver; |
| import android.app.Presentation; |
| import android.app.TaskStackListener; |
| import android.car.hardware.power.CarPowerManager; |
| import android.car.user.CarUserManager; |
| import android.car.user.CarUserManager.UserLifecycleListener; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.hardware.display.DisplayManager; |
| import android.net.Uri; |
| import android.os.HandlerThread; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.Display; |
| |
| import com.android.car.CarLocalServices; |
| import com.android.car.CarServiceBase; |
| import com.android.car.CarServiceUtils; |
| import com.android.car.R; |
| import com.android.car.user.CarUserService; |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.io.PrintWriter; |
| import java.util.List; |
| |
| /** |
| * Monitors top activity for a display and guarantee activity in fixed mode is re-launched if it has |
| * crashed or gone to background for whatever reason. |
| * |
| * <p>This component also monitors the upddate of the target package and re-launch it once |
| * update is complete.</p> |
| */ |
| public final class FixedActivityService implements CarServiceBase { |
| |
| private static final boolean DBG = false; |
| |
| private static final long RECHECK_INTERVAL_MS = 500; |
| private static final int MAX_NUMBER_OF_CONSECUTIVE_CRASH_RETRY = 5; |
| // If process keep running without crashing, will reset consecutive crash counts. |
| private static final long CRASH_FORGET_INTERVAL_MS = 2 * 60 * 1000; // 2 mins |
| |
| private static class RunningActivityInfo { |
| @NonNull |
| public final Intent intent; |
| |
| @NonNull |
| public final ActivityOptions activityOptions; |
| |
| @UserIdInt |
| public final int userId; |
| |
| @GuardedBy("mLock") |
| public boolean isVisible; |
| @GuardedBy("mLock") |
| public long lastLaunchTimeMs = 0; |
| @GuardedBy("mLock") |
| public int consecutiveRetries = 0; |
| @GuardedBy("mLock") |
| public int taskId = INVALID_TASK_ID; |
| @GuardedBy("mLock") |
| public int previousTaskId = INVALID_TASK_ID; |
| @GuardedBy("mLock") |
| public boolean inBackground; |
| @GuardedBy("mLock") |
| public boolean failureLogged; |
| |
| RunningActivityInfo(@NonNull Intent intent, @NonNull ActivityOptions activityOptions, |
| @UserIdInt int userId) { |
| this.intent = intent; |
| this.activityOptions = activityOptions; |
| this.userId = userId; |
| } |
| |
| private void resetCrashCounterLocked() { |
| consecutiveRetries = 0; |
| failureLogged = false; |
| } |
| |
| @Override |
| public String toString() { |
| return "RunningActivityInfo{intent:" + intent + ",activityOptions:" + activityOptions |
| + ",userId:" + userId + ",isVisible:" + isVisible |
| + ",lastLaunchTimeMs:" + lastLaunchTimeMs |
| + ",consecutiveRetries:" + consecutiveRetries + ",taskId:" + taskId + "}"; |
| } |
| } |
| |
| private final Context mContext; |
| |
| private final IActivityManager mAm; |
| |
| private final DisplayManager mDm; |
| |
| private final UserManager mUm; |
| |
| private final UserLifecycleListener mUserLifecycleListener = event -> { |
| if (Log.isLoggable(TAG_AM, Log.DEBUG)) { |
| Log.d(TAG_AM, "onEvent(" + event + ")"); |
| } |
| if (CarUserManager.USER_LIFECYCLE_EVENT_TYPE_SWITCHING == event.getEventType()) { |
| synchronized (FixedActivityService.this.mLock) { |
| clearRunningActivitiesLocked(); |
| } |
| } |
| }; |
| |
| private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (Intent.ACTION_PACKAGE_CHANGED.equals(action) |
| || Intent.ACTION_PACKAGE_REPLACED.equals( |
| action)) { |
| Uri packageData = intent.getData(); |
| if (packageData == null) { |
| Log.w(TAG_AM, "null packageData"); |
| return; |
| } |
| String packageName = packageData.getSchemeSpecificPart(); |
| if (packageName == null) { |
| Log.w(TAG_AM, "null packageName"); |
| return; |
| } |
| int uid = intent.getIntExtra(Intent.EXTRA_UID, INVALID_UID); |
| int userId = UserHandle.getUserId(uid); |
| boolean tryLaunch = false; |
| synchronized (mLock) { |
| for (int i = 0; i < mRunningActivities.size(); i++) { |
| RunningActivityInfo info = mRunningActivities.valueAt(i); |
| ComponentName component = info.intent.getComponent(); |
| // should do this for all activities as the same package can cover multiple |
| // displays. |
| if (packageName.equals(component.getPackageName()) |
| && info.userId == userId) { |
| Log.i(TAG_AM, "Package updated:" + packageName |
| + ",user:" + userId); |
| info.resetCrashCounterLocked(); |
| tryLaunch = true; |
| } |
| } |
| } |
| if (tryLaunch) { |
| launchIfNecessary(); |
| } |
| } |
| } |
| }; |
| |
| // It says listener but is actually callback. |
| private final TaskStackListener mTaskStackListener = new TaskStackListener() { |
| @Override |
| public void onTaskStackChanged() { |
| launchIfNecessary(); |
| } |
| |
| @Override |
| public void onTaskCreated(int taskId, ComponentName componentName) { |
| launchIfNecessary(); |
| } |
| |
| @Override |
| public void onTaskRemoved(int taskId) { |
| launchIfNecessary(); |
| } |
| |
| @Override |
| public void onTaskMovedToFront(int taskId) { |
| launchIfNecessary(); |
| } |
| |
| @Override |
| public void onTaskRemovalStarted(int taskId) { |
| launchIfNecessary(); |
| } |
| }; |
| |
| private final IProcessObserver mProcessObserver = new IProcessObserver.Stub() { |
| @Override |
| public void onForegroundActivitiesChanged(int pid, int uid, boolean foregroundActivities) { |
| launchIfNecessary(); |
| } |
| |
| @Override |
| public void onForegroundServicesChanged(int pid, int uid, int fgServiceTypes) { |
| // ignore |
| } |
| |
| @Override |
| public void onProcessDied(int pid, int uid) { |
| launchIfNecessary(); |
| } |
| }; |
| |
| private final HandlerThread mHandlerThread; |
| |
| private final Runnable mActivityCheckRunnable = () -> { |
| launchIfNecessary(); |
| }; |
| |
| private final Object mLock = new Object(); |
| |
| // key: displayId |
| @GuardedBy("mLock") |
| private final SparseArray<RunningActivityInfo> mRunningActivities = |
| new SparseArray<>(/* capacity= */ 1); // default to one cluster only case |
| |
| @GuardedBy("mLock") |
| private final SparseArray<Presentation> mBlockingPresentations = new SparseArray<>(1); |
| |
| @GuardedBy("mLock") |
| private boolean mEventMonitoringActive; |
| |
| @GuardedBy("mLock") |
| private CarPowerManager mCarPowerManager; |
| |
| private final CarPowerManager.CarPowerStateListener mCarPowerStateListener = (state) -> { |
| if (state != CarPowerManager.CarPowerStateListener.ON) { |
| return; |
| } |
| synchronized (mLock) { |
| for (int i = 0; i < mRunningActivities.size(); i++) { |
| RunningActivityInfo info = mRunningActivities.valueAt(i); |
| info.resetCrashCounterLocked(); |
| } |
| } |
| launchIfNecessary(); |
| }; |
| |
| public FixedActivityService(Context context) { |
| this(context, ActivityManager.getService(), context.getSystemService(UserManager.class), |
| context.getSystemService(DisplayManager.class)); |
| } |
| |
| FixedActivityService(Context context, IActivityManager activityManager, |
| UserManager userManager, DisplayManager displayManager) { |
| mContext = context; |
| mAm = activityManager; |
| mUm = userManager; |
| mDm = displayManager; |
| mHandlerThread = CarServiceUtils.getHandlerThread( |
| FixedActivityService.class.getSimpleName()); |
| } |
| |
| @Override |
| public void init() { |
| // nothing to do |
| } |
| |
| @Override |
| public void release() { |
| stopMonitoringEvents(); |
| } |
| |
| @Override |
| public void dump(PrintWriter writer) { |
| writer.println("*FixedActivityService*"); |
| synchronized (mLock) { |
| writer.println("mRunningActivities:" + mRunningActivities |
| + " ,mEventMonitoringActive:" + mEventMonitoringActive); |
| writer.println("mBlockingPresentations:"); |
| for (int i = 0; i < mBlockingPresentations.size(); i++) { |
| Presentation p = mBlockingPresentations.valueAt(i); |
| if (p == null) { |
| continue; |
| } |
| writer.println("display:" + mBlockingPresentations.keyAt(i) |
| + " showing:" + p.isShowing()); |
| } |
| } |
| } |
| |
| private void clearRunningActivitiesLocked() { |
| int currentUser = ActivityManager.getCurrentUser(); |
| for (int i = mRunningActivities.size() - 1; i >= 0; i--) { |
| RunningActivityInfo info = mRunningActivities.valueAt(i); |
| if (info == null || info.userId != currentUser) { |
| mRunningActivities.removeAt(i); |
| } |
| } |
| } |
| |
| private void postRecheck(long delayMs) { |
| mHandlerThread.getThreadHandler().postDelayed(mActivityCheckRunnable, delayMs); |
| } |
| |
| private void startMonitoringEvents() { |
| CarPowerManager carPowerManager; |
| synchronized (mLock) { |
| if (mEventMonitoringActive) { |
| return; |
| } |
| mEventMonitoringActive = true; |
| carPowerManager = CarLocalServices.createCarPowerManager(mContext); |
| mCarPowerManager = carPowerManager; |
| } |
| CarUserService userService = CarLocalServices.getService(CarUserService.class); |
| userService.addUserLifecycleListener(mUserLifecycleListener); |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_PACKAGE_CHANGED); |
| filter.addAction(Intent.ACTION_PACKAGE_REPLACED); |
| filter.addDataScheme("package"); |
| mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, filter, |
| /* broadcastPermission= */ null, /* scheduler= */ null); |
| try { |
| mAm.registerTaskStackListener(mTaskStackListener); |
| mAm.registerProcessObserver(mProcessObserver); |
| } catch (RemoteException e) { |
| Log.e(TAG_AM, "remote exception from AM", e); |
| } |
| try { |
| carPowerManager.setListener(mCarPowerStateListener); |
| } catch (Exception e) { |
| // should not happen |
| Log.e(TAG_AM, "Got exception from CarPowerManager", e); |
| } |
| } |
| |
| private void stopMonitoringEvents() { |
| CarPowerManager carPowerManager; |
| synchronized (mLock) { |
| if (!mEventMonitoringActive) { |
| return; |
| } |
| mEventMonitoringActive = false; |
| carPowerManager = mCarPowerManager; |
| mCarPowerManager = null; |
| } |
| if (carPowerManager != null) { |
| carPowerManager.clearListener(); |
| } |
| mHandlerThread.getThreadHandler().removeCallbacks(mActivityCheckRunnable); |
| CarUserService userService = CarLocalServices.getService(CarUserService.class); |
| userService.removeUserLifecycleListener(mUserLifecycleListener); |
| try { |
| mAm.unregisterTaskStackListener(mTaskStackListener); |
| mAm.unregisterProcessObserver(mProcessObserver); |
| } catch (RemoteException e) { |
| Log.e(TAG_AM, "remote exception from AM", e); |
| } |
| mContext.unregisterReceiver(mBroadcastReceiver); |
| } |
| |
| @Nullable |
| private List<StackInfo> getStackInfos() { |
| try { |
| return mAm.getAllStackInfos(); |
| } catch (RemoteException e) { |
| Log.e(TAG_AM, "remote exception from AM", e); |
| } |
| return null; |
| } |
| |
| /** |
| * Launches all stored fixed mode activities if necessary. |
| * @param displayId Display id to check if it is visible. If check is not necessary, should pass |
| * {@link Display#INVALID_DISPLAY}. |
| * @return true if fixed Activity for given {@code displayId} is visible / successfully |
| * launched. It will return false for {@link Display#INVALID_DISPLAY} {@code displayId}. |
| */ |
| private boolean launchIfNecessary(int displayId) { |
| List<StackInfo> infos = getStackInfos(); |
| if (infos == null) { |
| Log.e(TAG_AM, "cannot get StackInfo from AM"); |
| return false; |
| } |
| long now = SystemClock.elapsedRealtime(); |
| synchronized (mLock) { |
| if (mRunningActivities.size() == 0) { |
| // it must have been stopped. |
| if (DBG) { |
| Log.i(TAG_AM, "empty activity list", new RuntimeException()); |
| } |
| return false; |
| } |
| for (int i = mRunningActivities.size() - 1; i >= 0; i--) { |
| RunningActivityInfo activityInfo = mRunningActivities.valueAt(i); |
| activityInfo.isVisible = false; |
| if (isUserAllowedToLaunchActivity(activityInfo.userId)) { |
| continue; |
| } |
| final int displayIdForActivity = mRunningActivities.keyAt(i); |
| if (activityInfo.taskId != INVALID_TASK_ID) { |
| Log.i(TAG_AM, "Finishing fixed activity on user switching:" |
| + activityInfo); |
| try { |
| mAm.removeTask(activityInfo.taskId); |
| } catch (RemoteException e) { |
| Log.e(TAG_AM, "remote exception from AM", e); |
| } |
| CarServiceUtils.runOnMain(() -> { |
| Display display = mDm.getDisplay(displayIdForActivity); |
| if (display == null) { |
| Log.e(TAG_AM, "Display not available, cannot launnch window:" |
| + displayIdForActivity); |
| return; |
| } |
| Presentation p = new Presentation(mContext, display, |
| android.R.style.Theme_Black_NoTitleBar_Fullscreen); |
| p.setContentView(R.layout.activity_continuous_blank); |
| synchronized (mLock) { |
| RunningActivityInfo info = mRunningActivities.get(displayIdForActivity); |
| if (info != null && info.userId == ActivityManager.getCurrentUser()) { |
| Log.i(TAG_AM, "Do not show Presentation, new req already made"); |
| return; |
| } |
| mBlockingPresentations.append(displayIdForActivity, p); |
| } |
| // Change the window type, since we can't show the Presentation window |
| // in the internal display. |
| p.getWindow().setType(TYPE_SYSTEM_DIALOG); |
| p.show(); |
| }); |
| } |
| mRunningActivities.removeAt(i); |
| } |
| for (StackInfo stackInfo : infos) { |
| RunningActivityInfo activityInfo = mRunningActivities.get(stackInfo.displayId); |
| if (activityInfo == null) { |
| continue; |
| } |
| int topUserId = stackInfo.taskUserIds[stackInfo.taskUserIds.length - 1]; |
| if (activityInfo.intent.getComponent().equals(stackInfo.topActivity) |
| && activityInfo.userId == topUserId && stackInfo.visible) { |
| // top one is matching. |
| activityInfo.isVisible = true; |
| activityInfo.taskId = stackInfo.taskIds[stackInfo.taskIds.length - 1]; |
| continue; |
| } |
| activityInfo.previousTaskId = stackInfo.taskIds[stackInfo.taskIds.length - 1]; |
| Log.i(TAG_AM, "Unmatched top activity will be removed:" |
| + stackInfo.topActivity + " top task id:" + activityInfo.previousTaskId |
| + " user:" + topUserId + " display:" + stackInfo.displayId); |
| activityInfo.inBackground = false; |
| for (int i = 0; i < stackInfo.taskIds.length - 1; i++) { |
| if (activityInfo.taskId == stackInfo.taskIds[i]) { |
| activityInfo.inBackground = true; |
| } |
| } |
| if (!activityInfo.inBackground) { |
| activityInfo.taskId = INVALID_TASK_ID; |
| } |
| } |
| |
| for (int i = 0; i < mRunningActivities.size(); i++) { |
| RunningActivityInfo activityInfo = mRunningActivities.valueAt(i); |
| long timeSinceLastLaunchMs = now - activityInfo.lastLaunchTimeMs; |
| if (activityInfo.isVisible) { |
| if (timeSinceLastLaunchMs >= CRASH_FORGET_INTERVAL_MS) { |
| activityInfo.consecutiveRetries = 0; |
| } |
| continue; |
| } |
| if (!isComponentAvailable(activityInfo.intent.getComponent(), |
| activityInfo.userId)) { |
| continue; |
| } |
| // For 1st call (consecutiveRetries == 0), do not wait as there can be no posting |
| // for recheck. |
| if (activityInfo.consecutiveRetries > 0 && (timeSinceLastLaunchMs |
| < RECHECK_INTERVAL_MS)) { |
| // wait until next check interval comes. |
| continue; |
| } |
| if (activityInfo.consecutiveRetries >= MAX_NUMBER_OF_CONSECUTIVE_CRASH_RETRY) { |
| // re-tried too many times, give up for now. |
| if (!activityInfo.failureLogged) { |
| activityInfo.failureLogged = true; |
| Log.w(TAG_AM, "Too many relaunch failure of fixed activity:" |
| + activityInfo); |
| } |
| continue; |
| } |
| |
| Log.i(TAG_AM, "Launching Activity for fixed mode. Intent:" + activityInfo.intent |
| + ",userId:" + UserHandle.of(activityInfo.userId) + ",displayId:" |
| + mRunningActivities.keyAt(i)); |
| // Increase retry count if task is not in background. In case like other app is |
| // launched and the target activity is still in background, do not consider it |
| // as retry. |
| if (!activityInfo.inBackground) { |
| activityInfo.consecutiveRetries++; |
| } |
| try { |
| postRecheck(RECHECK_INTERVAL_MS); |
| postRecheck(CRASH_FORGET_INTERVAL_MS); |
| mContext.startActivityAsUser(activityInfo.intent, |
| activityInfo.activityOptions.toBundle(), |
| UserHandle.of(activityInfo.userId)); |
| activityInfo.isVisible = true; |
| activityInfo.lastLaunchTimeMs = SystemClock.elapsedRealtime(); |
| } catch (Exception e) { // Catch all for any app related issues. |
| Log.w(TAG_AM, "Cannot start activity:" + activityInfo.intent, e); |
| } |
| } |
| RunningActivityInfo activityInfo = mRunningActivities.get(displayId); |
| if (activityInfo == null) { |
| return false; |
| } |
| return activityInfo.isVisible; |
| } |
| } |
| |
| private void launchIfNecessary() { |
| launchIfNecessary(Display.INVALID_DISPLAY); |
| } |
| |
| private void logComponentNotFound(ComponentName component, @UserIdInt int userId, |
| Exception e) { |
| Log.e(TAG_AM, "Specified Component not found:" + component |
| + " for userid:" + userId, e); |
| } |
| |
| private boolean isComponentAvailable(ComponentName component, @UserIdInt int userId) { |
| PackageInfo packageInfo; |
| try { |
| packageInfo = mContext.getPackageManager().getPackageInfoAsUser( |
| component.getPackageName(), PackageManager.GET_ACTIVITIES, userId); |
| } catch (PackageManager.NameNotFoundException e) { |
| logComponentNotFound(component, userId, e); |
| return false; |
| } |
| if (packageInfo == null || packageInfo.activities == null) { |
| // may not be necessary but additional safety check |
| logComponentNotFound(component, userId, new RuntimeException()); |
| return false; |
| } |
| String fullName = component.getClassName(); |
| String shortName = component.getShortClassName(); |
| for (ActivityInfo info : packageInfo.activities) { |
| if (info.name.equals(fullName) || info.name.equals(shortName)) { |
| return true; |
| } |
| } |
| logComponentNotFound(component, userId, new RuntimeException()); |
| return false; |
| } |
| |
| private boolean isUserAllowedToLaunchActivity(@UserIdInt int userId) { |
| int currentUser = ActivityManager.getCurrentUser(); |
| if (userId == currentUser) { |
| return true; |
| } |
| int[] profileIds = mUm.getEnabledProfileIds(currentUser); |
| // null can happen in test env when UserManager is mocked. So this check is not necessary |
| // in real env but add it to make test impl easier. |
| if (profileIds == null) { |
| return false; |
| } |
| for (int id : profileIds) { |
| if (id == userId) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean isDisplayAllowedForFixedMode(int displayId) { |
| if (displayId == Display.DEFAULT_DISPLAY || displayId == Display.INVALID_DISPLAY) { |
| Log.w(TAG_AM, "Target display cannot be used for fixed mode, displayId:" + displayId, |
| new RuntimeException()); |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Checks {@link InstrumentClusterRenderingService#startFixedActivityModeForDisplayAndUser( |
| * Intent, ActivityOptions, int)} |
| */ |
| public boolean startFixedActivityModeForDisplayAndUser(@NonNull Intent intent, |
| @NonNull ActivityOptions options, int displayId, @UserIdInt int userId) { |
| if (!isDisplayAllowedForFixedMode(displayId)) { |
| return false; |
| } |
| if (options == null) { |
| Log.e(TAG_AM, "startFixedActivityModeForDisplayAndUser, null options"); |
| return false; |
| } |
| if (!isUserAllowedToLaunchActivity(userId)) { |
| Log.e(TAG_AM, "startFixedActivityModeForDisplayAndUser, requested user:" + userId |
| + " cannot launch activity, Intent:" + intent); |
| return false; |
| } |
| ComponentName component = intent.getComponent(); |
| if (component == null) { |
| Log.e(TAG_AM, |
| "startFixedActivityModeForDisplayAndUser: No component specified for " |
| + "requested Intent" |
| + intent); |
| return false; |
| } |
| if (!isComponentAvailable(component, userId)) { |
| return false; |
| } |
| boolean startMonitoringEvents = false; |
| synchronized (mLock) { |
| Presentation p = mBlockingPresentations.removeReturnOld(displayId); |
| if (p != null) { |
| p.dismiss(); |
| } |
| if (mRunningActivities.size() == 0) { |
| startMonitoringEvents = true; |
| } |
| RunningActivityInfo activityInfo = mRunningActivities.get(displayId); |
| boolean replaceEntry = true; |
| if (activityInfo != null && activityInfo.intent.equals(intent) |
| && options.equals(activityInfo.activityOptions) |
| && userId == activityInfo.userId) { |
| replaceEntry = false; |
| if (activityInfo.isVisible) { // already shown. |
| return true; |
| } |
| } |
| if (replaceEntry) { |
| activityInfo = new RunningActivityInfo(intent, options, userId); |
| mRunningActivities.put(displayId, activityInfo); |
| } |
| } |
| boolean launched = launchIfNecessary(displayId); |
| if (!launched) { |
| synchronized (mLock) { |
| mRunningActivities.remove(displayId); |
| } |
| } |
| // If first trial fails, let client know and do not retry as it can be wrong setting. |
| if (startMonitoringEvents && launched) { |
| startMonitoringEvents(); |
| } |
| return launched; |
| } |
| |
| /** Check {@link InstrumentClusterRenderingService#stopFixedActivityMode(int)} */ |
| public void stopFixedActivityMode(int displayId) { |
| if (!isDisplayAllowedForFixedMode(displayId)) { |
| return; |
| } |
| boolean stopMonitoringEvents = false; |
| synchronized (mLock) { |
| mRunningActivities.remove(displayId); |
| if (mRunningActivities.size() == 0) { |
| stopMonitoringEvents = true; |
| } |
| } |
| if (stopMonitoringEvents) { |
| stopMonitoringEvents(); |
| } |
| } |
| } |
