RecentsAnimation.java revision 54cff64ec6ef818e270eb39a74d6a58068553d66
1e2d721781fc024cbd9a14929741e5b476242291fWinson Chung/* 2e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * Copyright (C) 2018 The Android Open Source Project 3e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * 4e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * Licensed under the Apache License, Version 2.0 (the "License"); 5e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * you may not use this file except in compliance with the License. 6e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * You may obtain a copy of the License at 7e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * 8e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * http://www.apache.org/licenses/LICENSE-2.0 9e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * 10e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * Unless required by applicable law or agreed to in writing, software 11e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * distributed under the License is distributed on an "AS IS" BASIS, 12e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * See the License for the specific language governing permissions and 14e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * limitations under the License. 15e2d721781fc024cbd9a14929741e5b476242291fWinson Chung */ 16e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 17e2d721781fc024cbd9a14929741e5b476242291fWinson Chungpackage com.android.server.am; 18e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 1954cff64ec6ef818e270eb39a74d6a58068553d66Jorim Jaggiimport static android.app.ActivityManager.START_TASK_TO_FRONT; 20e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME; 21e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport static android.content.Intent.FLAG_ACTIVITY_NEW_TASK; 22e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport static android.content.Intent.FLAG_ACTIVITY_NO_ANIMATION; 23584d652a1dba2b09975a1555c71ed339374faac7Winson Chungimport static android.os.Trace.TRACE_TAG_ACTIVITY_MANAGER; 24e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport static android.view.WindowManager.TRANSIT_NONE; 25e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport static com.android.server.am.ActivityStackSupervisor.PRESERVE_WINDOWS; 26e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 27e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport android.app.ActivityOptions; 28e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport android.content.ComponentName; 29e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport android.content.Intent; 30e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport android.os.Handler; 31ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chungimport android.os.RemoteException; 32584d652a1dba2b09975a1555c71ed339374faac7Winson Chungimport android.os.Trace; 33ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chungimport android.util.Slog; 34e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport android.view.IRecentsAnimationRunner; 35e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport com.android.server.wm.RecentsAnimationController.RecentsAnimationCallbacks; 36e2d721781fc024cbd9a14929741e5b476242291fWinson Chungimport com.android.server.wm.WindowManagerService; 37e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 38e2d721781fc024cbd9a14929741e5b476242291fWinson Chung/** 39e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * Manages the recents animation, including the reordering of the stacks for the transition and 40e2d721781fc024cbd9a14929741e5b476242291fWinson Chung * cleanup. See {@link com.android.server.wm.RecentsAnimationController}. 41e2d721781fc024cbd9a14929741e5b476242291fWinson Chung */ 42e2d721781fc024cbd9a14929741e5b476242291fWinson Chungclass RecentsAnimation implements RecentsAnimationCallbacks { 43e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private static final String TAG = RecentsAnimation.class.getSimpleName(); 44e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 45e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private static final int RECENTS_ANIMATION_TIMEOUT = 10 * 1000; 46e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 47e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private final ActivityManagerService mService; 48e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private final ActivityStackSupervisor mStackSupervisor; 49e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private final ActivityStartController mActivityStartController; 50e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private final WindowManagerService mWindowManager; 51e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private final UserController mUserController; 52e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private final Handler mHandler; 53bc2aabe84568c6b1a54c1b1467a539781488c8caJorim Jaggi private final int mCallingPid; 54e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 55e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private final Runnable mCancelAnimationRunnable; 56e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 57e2d721781fc024cbd9a14929741e5b476242291fWinson Chung // The stack to restore the home stack behind when the animation is finished 58e2d721781fc024cbd9a14929741e5b476242291fWinson Chung private ActivityStack mRestoreHomeBehindStack; 59e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 60e2d721781fc024cbd9a14929741e5b476242291fWinson Chung RecentsAnimation(ActivityManagerService am, ActivityStackSupervisor stackSupervisor, 61e2d721781fc024cbd9a14929741e5b476242291fWinson Chung ActivityStartController activityStartController, WindowManagerService wm, 62bc2aabe84568c6b1a54c1b1467a539781488c8caJorim Jaggi UserController userController, int callingPid) { 63e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mService = am; 64e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mStackSupervisor = stackSupervisor; 65e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mActivityStartController = activityStartController; 66e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mHandler = new Handler(mStackSupervisor.mLooper); 67e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mWindowManager = wm; 68e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mUserController = userController; 69bc2aabe84568c6b1a54c1b1467a539781488c8caJorim Jaggi mCallingPid = callingPid; 70ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung 71e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mCancelAnimationRunnable = () -> { 72e2d721781fc024cbd9a14929741e5b476242291fWinson Chung // The caller has not finished the animation in a predefined amount of time, so 73e2d721781fc024cbd9a14929741e5b476242291fWinson Chung // force-cancel the animation 74e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mWindowManager.cancelRecentsAnimation(); 75e2d721781fc024cbd9a14929741e5b476242291fWinson Chung }; 76e2d721781fc024cbd9a14929741e5b476242291fWinson Chung } 77e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 78e2d721781fc024cbd9a14929741e5b476242291fWinson Chung void startRecentsActivity(Intent intent, IRecentsAnimationRunner recentsAnimationRunner, 79e2d721781fc024cbd9a14929741e5b476242291fWinson Chung ComponentName recentsComponent, int recentsUid) { 80584d652a1dba2b09975a1555c71ed339374faac7Winson Chung Trace.traceBegin(TRACE_TAG_ACTIVITY_MANAGER, "RecentsAnimation#startRecentsActivity"); 81ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung 82ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung if (!mWindowManager.canStartRecentsAnimation()) { 83ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung notifyAnimationCancelBeforeStart(recentsAnimationRunner); 84ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung return; 85ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung } 86ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung 87ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung // If the existing home activity is already on top, then cancel 88ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung ActivityRecord homeActivity = mStackSupervisor.getHomeActivity(); 89ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung final boolean hasExistingHomeActivity = homeActivity != null; 90ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung if (hasExistingHomeActivity) { 91ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung final ActivityDisplay display = homeActivity.getDisplay(); 92ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung mRestoreHomeBehindStack = display.getStackAboveHome(); 93ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung if (mRestoreHomeBehindStack == null) { 94ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung notifyAnimationCancelBeforeStart(recentsAnimationRunner); 95ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung return; 96ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung } 97ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung } 98ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung 9954cff64ec6ef818e270eb39a74d6a58068553d66Jorim Jaggi mStackSupervisor.getActivityMetricsLogger().notifyActivityLaunching(); 10054cff64ec6ef818e270eb39a74d6a58068553d66Jorim Jaggi 101bc2aabe84568c6b1a54c1b1467a539781488c8caJorim Jaggi mService.setRunningRemoteAnimation(mCallingPid, true); 102bc2aabe84568c6b1a54c1b1467a539781488c8caJorim Jaggi 1031e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.deferSurfaceLayout(); 1041e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung try { 105ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung final ActivityDisplay display; 106ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung if (hasExistingHomeActivity) { 107ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung // Move the home activity into place for the animation if it is not already top most 108ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung display = homeActivity.getDisplay(); 109ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung display.moveHomeStackBehindBottomMostVisibleStack(); 110ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung } else { 1111e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // No home activity 1121e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung final ActivityOptions opts = ActivityOptions.makeBasic(); 1131e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung opts.setLaunchActivityType(ACTIVITY_TYPE_HOME); 1141e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung opts.setAvoidMoveToFront(); 1151e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung intent.addFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_NO_ANIMATION); 1161e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung 1171e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mActivityStartController 1181e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung .obtainStarter(intent, "startRecentsActivity_noHomeActivity") 1191e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung .setCallingUid(recentsUid) 1201e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung .setCallingPackage(recentsComponent.getPackageName()) 1211e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung .setActivityOptions(SafeActivityOptions.fromBundle(opts.toBundle())) 1221e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung .setMayWait(mUserController.getCurrentUserId()) 1231e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung .execute(); 1241e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.prepareAppTransition(TRANSIT_NONE, false); 125e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 126ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung homeActivity = mStackSupervisor.getHomeActivity(); 127ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung display = homeActivity.getDisplay(); 128ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung 1291e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // TODO: Maybe wait for app to draw in this particular case? 1301e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung } 131e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 1321e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // Mark the home activity as launch-behind to bump its visibility for the 1331e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // duration of the gesture that is driven by the recents component 1341e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung homeActivity.mLaunchTaskBehind = true; 135e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 136ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung // Post a timeout for the animation. This needs to happen before initializing the 137ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung // recents animation on the WM side since we may decide to cancel the animation there 138ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung mHandler.postDelayed(mCancelAnimationRunnable, RECENTS_ANIMATION_TIMEOUT); 139ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung 1401e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // Fetch all the surface controls and pass them to the client to get the animation 1411e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // started 14265fc89acafc2c359751af4c4a7b6c6753c1b4e47Winson Chung mWindowManager.cancelRecentsAnimation(); 1431e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.initializeRecentsAnimation(recentsAnimationRunner, this, 144593e9567fdc2a7b5c7e06c12c9af4b32f4216d85Vadim Tryshev display.mDisplayId, mStackSupervisor.mRecentTasks.getRecentTaskIds()); 145e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 1461e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // If we updated the launch-behind state, update the visibility of the activities after 1471e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // we fetch the visible tasks to be controlled by the animation 1481e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, PRESERVE_WINDOWS); 14954cff64ec6ef818e270eb39a74d6a58068553d66Jorim Jaggi 15054cff64ec6ef818e270eb39a74d6a58068553d66Jorim Jaggi mStackSupervisor.getActivityMetricsLogger().notifyActivityLaunched(START_TASK_TO_FRONT, 15154cff64ec6ef818e270eb39a74d6a58068553d66Jorim Jaggi homeActivity); 1521e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung } finally { 1531e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.continueSurfaceLayout(); 154584d652a1dba2b09975a1555c71ed339374faac7Winson Chung Trace.traceEnd(TRACE_TAG_ACTIVITY_MANAGER); 1551e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung } 156e2d721781fc024cbd9a14929741e5b476242291fWinson Chung } 157e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 158e2d721781fc024cbd9a14929741e5b476242291fWinson Chung @Override 159e2d721781fc024cbd9a14929741e5b476242291fWinson Chung public void onAnimationFinished(boolean moveHomeToTop) { 160e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mHandler.removeCallbacks(mCancelAnimationRunnable); 161e2d721781fc024cbd9a14929741e5b476242291fWinson Chung synchronized (mService) { 162e2d721781fc024cbd9a14929741e5b476242291fWinson Chung if (mWindowManager.getRecentsAnimationController() == null) return; 163e2d721781fc024cbd9a14929741e5b476242291fWinson Chung 164bc2aabe84568c6b1a54c1b1467a539781488c8caJorim Jaggi mService.setRunningRemoteAnimation(mCallingPid, false); 165bc2aabe84568c6b1a54c1b1467a539781488c8caJorim Jaggi 166e2d721781fc024cbd9a14929741e5b476242291fWinson Chung mWindowManager.inSurfaceTransaction(() -> { 167584d652a1dba2b09975a1555c71ed339374faac7Winson Chung Trace.traceBegin(TRACE_TAG_ACTIVITY_MANAGER, 168584d652a1dba2b09975a1555c71ed339374faac7Winson Chung "RecentsAnimation#onAnimationFinished_inSurfaceTransaction"); 1691e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.deferSurfaceLayout(); 1701e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung try { 1711e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.cleanupRecentsAnimation(); 1721e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung 1731e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // Move the home stack to the front 1741e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung final ActivityRecord homeActivity = mStackSupervisor.getHomeActivity(); 1751e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung if (homeActivity == null) { 1761e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung return; 1771e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung } 1781e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung 1791e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // Restore the launched-behind state 1801e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung homeActivity.mLaunchTaskBehind = false; 1811e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung 1821e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung if (moveHomeToTop) { 1831e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // Bring the home stack to the front 1841e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung final ActivityStack homeStack = homeActivity.getStack(); 185fa9ed96f1e9970e8867daa0b76175006c082b890Jorim Jaggi mStackSupervisor.mNoAnimActivities.add(homeActivity); 1861e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung homeStack.moveToFront("RecentsAnimation.onAnimationFinished()"); 1871e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung } else { 1881e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // Restore the home stack to its previous position 1891e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung final ActivityDisplay display = homeActivity.getDisplay(); 1901e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung display.moveHomeStackBehindStack(mRestoreHomeBehindStack); 1911e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung } 1921e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung 1931e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.prepareAppTransition(TRANSIT_NONE, false); 1941e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, false); 1951e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mStackSupervisor.resumeFocusedStackTopActivityLocked(); 1961e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung 1971e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // No reason to wait for the pausing activity in this case, as the hiding of 1981e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung // surfaces needs to be done immediately. 1991e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.executeAppTransition(); 2001e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung } finally { 2011e6d4a9e001f910de9396f4056eb74fdf9b8257cWinson Chung mWindowManager.continueSurfaceLayout(); 202584d652a1dba2b09975a1555c71ed339374faac7Winson Chung Trace.traceEnd(TRACE_TAG_ACTIVITY_MANAGER); 203e2d721781fc024cbd9a14929741e5b476242291fWinson Chung } 204e2d721781fc024cbd9a14929741e5b476242291fWinson Chung }); 205e2d721781fc024cbd9a14929741e5b476242291fWinson Chung } 206e2d721781fc024cbd9a14929741e5b476242291fWinson Chung } 207ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung 208ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung /** 209ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung * Called only when the animation should be canceled prior to starting. 210ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung */ 211ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung private void notifyAnimationCancelBeforeStart(IRecentsAnimationRunner recentsAnimationRunner) { 212ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung try { 213ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung recentsAnimationRunner.onAnimationCanceled(); 214ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung } catch (RemoteException e) { 215ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung Slog.e(TAG, "Failed to cancel recents animation before start", e); 216ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung } 217ddf62975798eff2a68422d075441a4bfcf1cd6b4Winson Chung } 218e2d721781fc024cbd9a14929741e5b476242291fWinson Chung} 219