/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.server.wm; import static android.app.ActivityTaskManager.INVALID_TASK_ID; import static android.app.ITaskStackListener.FORCED_RESIZEABLE_REASON_SPLIT_SCREEN; import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD; import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED; import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN; import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED; import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY; import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED; import static android.app.WindowConfiguration.activityTypeToString; import static android.app.WindowConfiguration.windowingModeToString; import static android.content.pm.ActivityInfo.CONFIG_SCREEN_LAYOUT; import static android.content.pm.ActivityInfo.FLAG_RESUME_WHILE_PAUSING; import static android.content.pm.ActivityInfo.FLAG_SHOW_FOR_ALL_USERS; import static android.os.Trace.TRACE_TAG_WINDOW_MANAGER; import static android.view.Display.DEFAULT_DISPLAY; import static android.view.Display.FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD; import static android.view.Display.INVALID_DISPLAY; import static android.view.WindowManager.TRANSIT_ACTIVITY_CLOSE; import static android.view.WindowManager.TRANSIT_ACTIVITY_OPEN; import static android.view.WindowManager.TRANSIT_CRASHING_ACTIVITY_CLOSE; import static android.view.WindowManager.TRANSIT_NONE; import static android.view.WindowManager.TRANSIT_SHOW_SINGLE_TASK_DISPLAY; import static android.view.WindowManager.TRANSIT_TASK_CLOSE; import static android.view.WindowManager.TRANSIT_TASK_OPEN; import static android.view.WindowManager.TRANSIT_TASK_OPEN_BEHIND; import static android.view.WindowManager.TRANSIT_TASK_TO_BACK; import static android.view.WindowManager.TRANSIT_TASK_TO_FRONT; import static com.android.server.wm.ActivityStack.ActivityState.PAUSED; import static com.android.server.wm.ActivityStack.ActivityState.PAUSING; import static com.android.server.wm.ActivityStack.ActivityState.RESUMED; import static com.android.server.wm.ActivityStack.ActivityState.STARTED; import static com.android.server.wm.ActivityStack.ActivityState.STOPPED; import static com.android.server.wm.ActivityStack.ActivityState.STOPPING; import static com.android.server.wm.ActivityStackSupervisor.DEFER_RESUME; import static com.android.server.wm.ActivityStackSupervisor.PRESERVE_WINDOWS; import static com.android.server.wm.ActivityStackSupervisor.dumpHistoryList; import static com.android.server.wm.ActivityStackSupervisor.printThisActivity; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_ADD_REMOVE; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_ALL; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_APP; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_CLEANUP; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_PAUSE; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_RESULTS; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_STATES; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_SWITCH; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_TRANSITION; import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_USER_LEAVING; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_ADD_REMOVE; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_APP; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_CLEANUP; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_PAUSE; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_RELEASE; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_RESULTS; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_STACK; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_STATES; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_SWITCH; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_TASKS; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_TRANSITION; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_USER_LEAVING; import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_VISIBILITY; import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_ATM; import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_WITH_CLASS_NAME; import static com.android.server.wm.ActivityTaskManagerService.H.FIRST_ACTIVITY_STACK_MSG; import static com.android.server.wm.ActivityTaskManagerService.RELAUNCH_REASON_FREE_RESIZE; import static com.android.server.wm.ActivityTaskManagerService.RELAUNCH_REASON_WINDOWING_MODE_RESIZE; import static com.android.server.wm.TaskProto.ACTIVITY_TYPE; import static com.android.server.wm.TaskProto.ANIMATING_BOUNDS; import static com.android.server.wm.TaskProto.BOUNDS; import static com.android.server.wm.TaskProto.CREATED_BY_ORGANIZER; import static com.android.server.wm.TaskProto.DISPLAY_ID; import static com.android.server.wm.TaskProto.FILLS_PARENT; import static com.android.server.wm.TaskProto.LAST_NON_FULLSCREEN_BOUNDS; import static com.android.server.wm.TaskProto.MIN_HEIGHT; import static com.android.server.wm.TaskProto.MIN_WIDTH; import static com.android.server.wm.TaskProto.ORIG_ACTIVITY; import static com.android.server.wm.TaskProto.REAL_ACTIVITY; import static com.android.server.wm.TaskProto.RESIZE_MODE; import static com.android.server.wm.TaskProto.RESUMED_ACTIVITY; import static com.android.server.wm.TaskProto.ROOT_TASK_ID; import static com.android.server.wm.TaskProto.SURFACE_HEIGHT; import static com.android.server.wm.TaskProto.SURFACE_WIDTH; import static com.android.server.wm.TaskProto.WINDOW_CONTAINER; import static com.android.server.wm.WindowContainer.AnimationFlags.CHILDREN; import static com.android.server.wm.WindowContainer.AnimationFlags.TRANSITION; import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; import static java.lang.Integer.MAX_VALUE; import android.annotation.IntDef; import android.annotation.Nullable; import android.app.Activity; import android.app.ActivityManager; import android.app.ActivityManagerInternal; import android.app.ActivityOptions; import android.app.AppGlobals; import android.app.IActivityController; import android.app.RemoteAction; import android.app.ResultInfo; import android.app.servertransaction.ActivityResultItem; import android.app.servertransaction.ClientTransaction; import android.app.servertransaction.NewIntentItem; import android.app.servertransaction.PauseActivityItem; import android.app.servertransaction.ResumeActivityItem; import android.content.ComponentName; import android.content.Intent; import android.content.pm.ActivityInfo; import android.content.res.Configuration; import android.graphics.Point; import android.graphics.Rect; import android.os.Binder; import android.os.Debug; import android.os.Handler; import android.os.IBinder; import android.os.Looper; import android.os.Message; import android.os.RemoteException; import android.os.SystemClock; import android.os.Trace; import android.os.UserHandle; import android.service.voice.IVoiceInteractionSession; import android.util.Log; import android.util.Slog; import android.util.proto.ProtoOutputStream; import android.view.Display; import android.view.DisplayInfo; import com.android.internal.annotations.GuardedBy; import com.android.internal.annotations.VisibleForTesting; import com.android.internal.app.IVoiceInteractor; import com.android.internal.os.logging.MetricsLoggerWrapper; import com.android.internal.util.function.pooled.PooledConsumer; import com.android.internal.util.function.pooled.PooledFunction; import com.android.internal.util.function.pooled.PooledLambda; import com.android.server.Watchdog; import com.android.server.am.ActivityManagerService; import com.android.server.am.ActivityManagerService.ItemMatcher; import com.android.server.am.AppTimeTracker; import com.android.server.uri.NeededUriGrants; import java.io.FileDescriptor; import java.io.PrintWriter; import java.util.ArrayList; import java.util.List; import java.util.Objects; import java.util.concurrent.atomic.AtomicBoolean; import java.util.function.Consumer; /** * State and management of a single stack of activities. */ class ActivityStack extends Task { private static final String TAG = TAG_WITH_CLASS_NAME ? "ActivityStack" : TAG_ATM; static final String TAG_ADD_REMOVE = TAG + POSTFIX_ADD_REMOVE; private static final String TAG_APP = TAG + POSTFIX_APP; static final String TAG_CLEANUP = TAG + POSTFIX_CLEANUP; private static final String TAG_PAUSE = TAG + POSTFIX_PAUSE; private static final String TAG_RELEASE = TAG + POSTFIX_RELEASE; private static final String TAG_RESULTS = TAG + POSTFIX_RESULTS; private static final String TAG_STACK = TAG + POSTFIX_STACK; private static final String TAG_STATES = TAG + POSTFIX_STATES; private static final String TAG_SWITCH = TAG + POSTFIX_SWITCH; static final String TAG_TASKS = TAG + POSTFIX_TASKS; private static final String TAG_TRANSITION = TAG + POSTFIX_TRANSITION; private static final String TAG_USER_LEAVING = TAG + POSTFIX_USER_LEAVING; static final String TAG_VISIBILITY = TAG + POSTFIX_VISIBILITY; // Set to false to disable the preview that is shown while a new activity // is being started. private static final boolean SHOW_APP_STARTING_PREVIEW = true; // How long to wait for all background Activities to redraw following a call to // convertToTranslucent(). private static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; @IntDef(prefix = {"STACK_VISIBILITY"}, value = { STACK_VISIBILITY_VISIBLE, STACK_VISIBILITY_VISIBLE_BEHIND_TRANSLUCENT, STACK_VISIBILITY_INVISIBLE, }) @interface StackVisibility {} /** Stack is visible. No other stacks on top that fully or partially occlude it. */ static final int STACK_VISIBILITY_VISIBLE = 0; /** Stack is partially occluded by other translucent stack(s) on top of it. */ static final int STACK_VISIBILITY_VISIBLE_BEHIND_TRANSLUCENT = 1; /** Stack is completely invisible. */ static final int STACK_VISIBILITY_INVISIBLE = 2; enum ActivityState { INITIALIZING, STARTED, RESUMED, PAUSING, PAUSED, STOPPING, STOPPED, FINISHING, DESTROYING, DESTROYED, RESTARTING_PROCESS } // The topmost Activity passed to convertToTranslucent(). When non-null it means we are // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the // Activity in mTranslucentActivityWaiting is notified via // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last // background activity being drawn then the same call will be made with a true value. ActivityRecord mTranslucentActivityWaiting = null; ArrayList mUndrawnActivitiesBelowTopTranslucent = new ArrayList<>(); /** * Set when we know we are going to be calling updateConfiguration() * soon, so want to skip intermediate config checks. */ boolean mConfigWillChange; /** * Used to keep resumeTopActivityUncheckedLocked() from being entered recursively */ boolean mInResumeTopActivity = false; int mCurrentUser; /** For comparison with DisplayContent bounds. */ private Rect mTmpRect = new Rect(); private Rect mTmpRect2 = new Rect(); // If this is true, we are in the bounds animating mode. The task will be down or upscaled to // perfectly fit the region it would have been cropped to. We may also avoid certain logic we // would otherwise apply while resizing, while resizing in the bounds animating mode. private boolean mBoundsAnimating = false; // Set when an animation has been requested but has not yet started from the UI thread. This is // cleared when the animation actually starts. private boolean mBoundsAnimatingRequested = false; private Rect mBoundsAnimationTarget = new Rect(); private Rect mBoundsAnimationSourceHintBounds = new Rect(); Rect mPreAnimationBounds = new Rect(); private final AnimatingActivityRegistry mAnimatingActivityRegistry = new AnimatingActivityRegistry(); private boolean mTopActivityOccludesKeyguard; private ActivityRecord mTopDismissingKeyguardActivity; private static final int TRANSLUCENT_TIMEOUT_MSG = FIRST_ACTIVITY_STACK_MSG + 1; private final Handler mHandler; private class ActivityStackHandler extends Handler { ActivityStackHandler(Looper looper) { super(looper); } @Override public void handleMessage(Message msg) { switch (msg.what) { case TRANSLUCENT_TIMEOUT_MSG: { synchronized (mAtmService.mGlobalLock) { notifyActivityDrawnLocked(null); } } break; } } } private static final ResetTargetTaskHelper sResetTargetTaskHelper = new ResetTargetTaskHelper(); private final EnsureActivitiesVisibleHelper mEnsureActivitiesVisibleHelper = new EnsureActivitiesVisibleHelper(this); private final EnsureVisibleActivitiesConfigHelper mEnsureVisibleActivitiesConfigHelper = new EnsureVisibleActivitiesConfigHelper(); private class EnsureVisibleActivitiesConfigHelper { private boolean mUpdateConfig; private boolean mPreserveWindow; private boolean mBehindFullscreen; void reset(boolean preserveWindow) { mPreserveWindow = preserveWindow; mUpdateConfig = false; mBehindFullscreen = false; } void process(ActivityRecord start, boolean preserveWindow) { if (start == null || !start.mVisibleRequested) { return; } reset(preserveWindow); final PooledFunction f = PooledLambda.obtainFunction( EnsureVisibleActivitiesConfigHelper::processActivity, this, PooledLambda.__(ActivityRecord.class)); forAllActivities(f, start, true /*includeBoundary*/, true /*traverseTopToBottom*/); f.recycle(); if (mUpdateConfig) { // Ensure the resumed state of the focus activity if we updated the configuration of // any activity. mRootWindowContainer.resumeFocusedStacksTopActivities(); } } boolean processActivity(ActivityRecord r) { mUpdateConfig |= r.ensureActivityConfiguration(0 /*globalChanges*/, mPreserveWindow); mBehindFullscreen |= r.occludesParent(); return mBehindFullscreen; } } private final CheckBehindFullscreenActivityHelper mCheckBehindFullscreenActivityHelper = new CheckBehindFullscreenActivityHelper(); private class CheckBehindFullscreenActivityHelper { private boolean mAboveTop; private boolean mBehindFullscreenActivity; private ActivityRecord mToCheck; private Consumer mHandleBehindFullscreenActivity; private boolean mHandlingOccluded; private void reset(ActivityRecord toCheck, Consumer handleBehindFullscreenActivity) { mToCheck = toCheck; mHandleBehindFullscreenActivity = handleBehindFullscreenActivity; mAboveTop = true; mBehindFullscreenActivity = false; if (!shouldBeVisible(null)) { // The stack is not visible, so no activity in it should be displaying a starting // window. Mark all activities below top and behind fullscreen. mAboveTop = false; mBehindFullscreenActivity = true; } mHandlingOccluded = mToCheck == null && mHandleBehindFullscreenActivity != null; } boolean process(ActivityRecord toCheck, Consumer handleBehindFullscreenActivity) { reset(toCheck, handleBehindFullscreenActivity); if (!mHandlingOccluded && mBehindFullscreenActivity) { return true; } final ActivityRecord topActivity = topRunningActivity(); final PooledFunction f = PooledLambda.obtainFunction( CheckBehindFullscreenActivityHelper::processActivity, this, PooledLambda.__(ActivityRecord.class), topActivity); forAllActivities(f); f.recycle(); return mBehindFullscreenActivity; } /** Returns {@code true} to stop the outer loop and indicate the result is computed. */ private boolean processActivity(ActivityRecord r, ActivityRecord topActivity) { if (mAboveTop) { if (r == topActivity) { if (r == mToCheck) { // It is the top activity in a visible stack. mBehindFullscreenActivity = false; return true; } mAboveTop = false; } mBehindFullscreenActivity |= r.occludesParent(); return false; } if (mHandlingOccluded) { // Iterating through all occluded activities. if (mBehindFullscreenActivity) { mHandleBehindFullscreenActivity.accept(r); } } else if (r == mToCheck) { return true; } else if (mBehindFullscreenActivity) { // It is occluded before {@param toCheck} is found. return true; } mBehindFullscreenActivity |= r.occludesParent(); return false; } } // TODO: Can we just loop through WindowProcessController#mActivities instead of doing this? private final RemoveHistoryRecordsForApp mRemoveHistoryRecordsForApp = new RemoveHistoryRecordsForApp(); private class RemoveHistoryRecordsForApp { private boolean mHasVisibleActivities; private boolean mIsProcessRemoved; private WindowProcessController mApp; private ArrayList mToRemove = new ArrayList<>(); boolean process(WindowProcessController app) { mToRemove.clear(); mHasVisibleActivities = false; mApp = app; mIsProcessRemoved = app.isRemoved(); if (mIsProcessRemoved) { // The package of the died process should be force-stopped, so make its activities // as finishing to prevent the process from being started again if the next top // (or being visible) activity also resides in the same process. app.makeFinishingForProcessRemoved(); } final PooledConsumer c = PooledLambda.obtainConsumer( RemoveHistoryRecordsForApp::addActivityToRemove, this, PooledLambda.__(ActivityRecord.class)); forAllActivities(c); c.recycle(); while (!mToRemove.isEmpty()) { processActivity(mToRemove.remove(0)); } mApp = null; return mHasVisibleActivities; } private void addActivityToRemove(ActivityRecord r) { if (r.app == mApp) { mToRemove.add(r); } } private void processActivity(ActivityRecord r) { if (DEBUG_CLEANUP) Slog.v(TAG_CLEANUP, "Record " + r + ": app=" + r.app); if (r.app != mApp) { return; } if (r.isVisible() || r.mVisibleRequested) { // While an activity launches a new activity, it's possible that the old // activity is already requested to be hidden (mVisibleRequested=false), but // this visibility is not yet committed, so isVisible()=true. mHasVisibleActivities = true; } final boolean remove; if ((r.mRelaunchReason == RELAUNCH_REASON_WINDOWING_MODE_RESIZE || r.mRelaunchReason == RELAUNCH_REASON_FREE_RESIZE) && r.launchCount < 3 && !r.finishing) { // If the process crashed during a resize, always try to relaunch it, unless // it has failed more than twice. Skip activities that's already finishing // cleanly by itself. remove = false; } else if ((!r.hasSavedState() && !r.stateNotNeeded && !r.isState(ActivityState.RESTARTING_PROCESS)) || r.finishing) { // Don't currently have state for the activity, or // it is finishing -- always remove it. remove = true; } else if (!r.mVisibleRequested && r.launchCount > 2 && r.lastLaunchTime > (SystemClock.uptimeMillis() - 60000)) { // We have launched this activity too many times since it was // able to run, so give up and remove it. // (Note if the activity is visible, we don't remove the record. // We leave the dead window on the screen but the process will // not be restarted unless user explicitly tap on it.) remove = true; } else { // The process may be gone, but the activity lives on! remove = false; } if (remove) { if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) Slog.i(TAG_ADD_REMOVE, "Removing activity " + r + " from stack " + ": hasSavedState=" + r.hasSavedState() + " stateNotNeeded=" + r.stateNotNeeded + " finishing=" + r.finishing + " state=" + r.getState() + " callers=" + Debug.getCallers(5)); if (!r.finishing || mIsProcessRemoved) { Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); EventLogTags.writeWmFinishActivity(r.mUserId, System.identityHashCode(r), r.getTask().mTaskId, r.shortComponentName, "proc died without state saved"); } } else { // We have the current state for this activity, so // it can be restarted later when needed. if (DEBUG_ALL) Slog.v(TAG, "Keeping entry, setting app to null"); if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during removeHistory for activity " + r); r.app = null; // Set nowVisible to previous visible state. If the app was visible while // it died, we leave the dead window on screen so it's basically visible. // This is needed when user later tap on the dead window, we need to stop // other apps when user transfers focus to the restarted activity. r.nowVisible = r.mVisibleRequested; } r.cleanUp(true /* cleanServices */, true /* setState */); if (remove) { r.removeFromHistory("appDied"); } } } ActivityStack(ActivityTaskManagerService atmService, int id, int activityType, ActivityInfo info, Intent intent, boolean createdByOrganizer) { this(atmService, id, info, intent, null /*voiceSession*/, null /*voiceInteractor*/, null /*taskDescription*/, null /*stack*/); mCreatedByOrganizer = createdByOrganizer; setActivityType(activityType); } ActivityStack(ActivityTaskManagerService atmService, int id, ActivityInfo info, Intent _intent, IVoiceInteractionSession _voiceSession, IVoiceInteractor _voiceInteractor, ActivityManager.TaskDescription _taskDescription, ActivityStack stack) { this(atmService, id, _intent, null /*_affinityIntent*/, null /*_affinity*/, null /*_rootAffinity*/, null /*_realActivity*/, null /*_origActivity*/, false /*_rootWasReset*/, false /*_autoRemoveRecents*/, false /*_askedCompatMode*/, UserHandle.getUserId(info.applicationInfo.uid), 0 /*_effectiveUid*/, null /*_lastDescription*/, System.currentTimeMillis(), true /*neverRelinquishIdentity*/, _taskDescription != null ? _taskDescription : new ActivityManager.TaskDescription(), id, INVALID_TASK_ID, INVALID_TASK_ID, 0 /*taskAffiliationColor*/, info.applicationInfo.uid, info.packageName, null, info.resizeMode, info.supportsPictureInPicture(), false /*_realActivitySuspended*/, false /*userSetupComplete*/, INVALID_MIN_SIZE, INVALID_MIN_SIZE, info, _voiceSession, _voiceInteractor, stack); } ActivityStack(ActivityTaskManagerService atmService, int id, Intent _intent, Intent _affinityIntent, String _affinity, String _rootAffinity, ComponentName _realActivity, ComponentName _origActivity, boolean _rootWasReset, boolean _autoRemoveRecents, boolean _askedCompatMode, int _userId, int _effectiveUid, String _lastDescription, long lastTimeMoved, boolean neverRelinquishIdentity, ActivityManager.TaskDescription _lastTaskDescription, int taskAffiliation, int prevTaskId, int nextTaskId, int taskAffiliationColor, int callingUid, String callingPackage, @Nullable String callingFeatureId, int resizeMode, boolean supportsPictureInPicture, boolean _realActivitySuspended, boolean userSetupComplete, int minWidth, int minHeight, ActivityInfo info, IVoiceInteractionSession _voiceSession, IVoiceInteractor _voiceInteractor, ActivityStack stack) { super(atmService, id, _intent, _affinityIntent, _affinity, _rootAffinity, _realActivity, _origActivity, _rootWasReset, _autoRemoveRecents, _askedCompatMode, _userId, _effectiveUid, _lastDescription, lastTimeMoved, neverRelinquishIdentity, _lastTaskDescription, taskAffiliation, prevTaskId, nextTaskId, taskAffiliationColor, callingUid, callingPackage, callingFeatureId, resizeMode, supportsPictureInPicture, _realActivitySuspended, userSetupComplete, minWidth, minHeight, info, _voiceSession, _voiceInteractor, stack); EventLogTags.writeWmStackCreated(id); mHandler = new ActivityStackHandler(mStackSupervisor.mLooper); mCurrentUser = mAtmService.mAmInternal.getCurrentUserId(); } @Override public void onConfigurationChanged(Configuration newParentConfig) { // Calling Task#onConfigurationChanged() for leaf task since the ops in this method are // particularly for ActivityStack, like preventing bounds changes when inheriting certain // windowing mode. if (!isRootTask()) { super.onConfigurationChanged(newParentConfig); return; } final int prevWindowingMode = getWindowingMode(); final boolean prevIsAlwaysOnTop = isAlwaysOnTop(); final int prevRotation = getWindowConfiguration().getRotation(); final Rect newBounds = mTmpRect; // Initialize the new bounds by previous bounds as the input and output for calculating // override bounds in pinned (pip) or split-screen mode. getBounds(newBounds); super.onConfigurationChanged(newParentConfig); final TaskDisplayArea taskDisplayArea = getDisplayArea(); if (taskDisplayArea == null) { return; } if (prevWindowingMode != getWindowingMode()) { taskDisplayArea.onStackWindowingModeChanged(this); } final DisplayContent display = getDisplay(); if (display == null ) { return; } final boolean windowingModeChanged = prevWindowingMode != getWindowingMode(); final int overrideWindowingMode = getRequestedOverrideWindowingMode(); // Update bounds if applicable boolean hasNewOverrideBounds = false; // Use override windowing mode to prevent extra bounds changes if inheriting the mode. if ((overrideWindowingMode != WINDOWING_MODE_PINNED) && !matchParentBounds()) { // If the parent (display) has rotated, rotate our bounds to best-fit where their // bounds were on the pre-rotated display. final int newRotation = getWindowConfiguration().getRotation(); final boolean rotationChanged = prevRotation != newRotation; if (rotationChanged) { display.mDisplayContent.rotateBounds( newParentConfig.windowConfiguration.getBounds(), prevRotation, newRotation, newBounds); hasNewOverrideBounds = true; } } if (windowingModeChanged) { taskDisplayArea.onStackWindowingModeChanged(this); } if (hasNewOverrideBounds) { if (inSplitScreenWindowingMode()) { setBounds(newBounds); } else if (overrideWindowingMode != WINDOWING_MODE_PINNED) { // For pinned stack, resize is now part of the {@link WindowContainerTransaction} resize(new Rect(newBounds), PRESERVE_WINDOWS, true /* deferResume */); } } if (prevIsAlwaysOnTop != isAlwaysOnTop()) { // Since always on top is only on when the stack is freeform or pinned, the state // can be toggled when the windowing mode changes. We must make sure the stack is // placed properly when always on top state changes. taskDisplayArea.positionStackAtTop(this, false /* includingParents */); } } @Override public void setWindowingMode(int windowingMode) { // Reset the cached result of toString() stringName = null; // Calling Task#setWindowingMode() for leaf task since this is the a specialization of // {@link #setWindowingMode(int)} for ActivityStack. if (!isRootTask()) { super.setWindowingMode(windowingMode); return; } setWindowingMode(windowingMode, false /* creating */); } /** * Specialization of {@link #setWindowingMode(int)} for this subclass. * * @param preferredWindowingMode the preferred windowing mode. This may not be honored depending * on the state of things. For example, WINDOWING_MODE_UNDEFINED will resolve to the * previous non-transient mode if this stack is currently in a transient mode. * @param creating {@code true} if this is being run during ActivityStack construction. */ void setWindowingMode(int preferredWindowingMode, boolean creating) { mWmService.inSurfaceTransaction(() -> setWindowingModeInSurfaceTransaction( preferredWindowingMode, creating)); } private void setWindowingModeInSurfaceTransaction(int preferredWindowingMode, boolean creating) { final TaskDisplayArea taskDisplayArea = getDisplayArea(); if (taskDisplayArea == null) { Slog.d(TAG, "taskDisplayArea is null, bail early"); return; } final int currentMode = getWindowingMode(); final int currentOverrideMode = getRequestedOverrideWindowingMode(); final Task topTask = getTopMostTask(); int windowingMode = preferredWindowingMode; // Need to make sure windowing mode is supported. If we in the process of creating the stack // no need to resolve the windowing mode again as it is already resolved to the right mode. if (!creating) { if (!taskDisplayArea.isValidWindowingMode(windowingMode, null /* ActivityRecord */, topTask, getActivityType())) { windowingMode = WINDOWING_MODE_UNDEFINED; } } final boolean alreadyInSplitScreenMode = taskDisplayArea.isSplitScreenModeActivated(); if (creating && alreadyInSplitScreenMode && windowingMode == WINDOWING_MODE_FULLSCREEN && isActivityTypeStandardOrUndefined()) { // If the stack is being created explicitly in fullscreen mode, dismiss split-screen // and display a warning toast about it. mAtmService.getTaskChangeNotificationController() .notifyActivityDismissingDockedStack(); taskDisplayArea.onSplitScreenModeDismissed(this); } if (currentMode == windowingMode) { // You are already in the window mode, so we can skip most of the work below. However, // it's possible that we have inherited the current windowing mode from a parent. So, // fulfill this method's contract by setting the override mode directly. getRequestedOverrideConfiguration().windowConfiguration.setWindowingMode(windowingMode); return; } final ActivityRecord topActivity = getTopNonFinishingActivity(); // For now, assume that the Stack's windowing mode is what will actually be used // by it's activities. In the future, there may be situations where this doesn't // happen; so at that point, this message will need to handle that. int likelyResolvedMode = windowingMode; if (windowingMode == WINDOWING_MODE_UNDEFINED) { final ConfigurationContainer parent = getParent(); likelyResolvedMode = parent != null ? parent.getWindowingMode() : WINDOWING_MODE_FULLSCREEN; } if (currentMode == WINDOWING_MODE_PINNED) { mAtmService.getTaskChangeNotificationController().notifyActivityUnpinned(); } if (likelyResolvedMode == WINDOWING_MODE_PINNED && taskDisplayArea.getRootPinnedTask() != null) { // Can only have 1 pip at a time, so replace an existing pip taskDisplayArea.getRootPinnedTask().dismissPip(); } if (likelyResolvedMode != WINDOWING_MODE_FULLSCREEN && topActivity != null && !topActivity.noDisplay && topActivity.isNonResizableOrForcedResizable(likelyResolvedMode)) { // Inform the user that they are starting an app that may not work correctly in // multi-window mode. final String packageName = topActivity.info.applicationInfo.packageName; mAtmService.getTaskChangeNotificationController().notifyActivityForcedResizable( topTask.mTaskId, FORCED_RESIZEABLE_REASON_SPLIT_SCREEN, packageName); } mAtmService.deferWindowLayout(); try { if (topActivity != null) { mStackSupervisor.mNoAnimActivities.add(topActivity); } super.setWindowingMode(windowingMode); // setWindowingMode triggers an onConfigurationChanged cascade which can result in a // different resolved windowing mode (usually when preferredWindowingMode is UNDEFINED). windowingMode = getWindowingMode(); if (creating) { // Nothing else to do if we don't have a window container yet. E.g. call from ctor. return; } if (windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY && alreadyInSplitScreenMode) { // We already have a split-screen stack in this display, so just move the tasks over. // TODO: Figure-out how to do all the stuff in // AMS.setTaskWindowingModeSplitScreenPrimary throw new IllegalArgumentException("Setting primary split-screen windowing mode" + " while there is already one isn't currently supported"); //return; } mTmpRect2.setEmpty(); if (windowingMode != WINDOWING_MODE_FULLSCREEN) { if (matchParentBounds()) { mTmpRect2.setEmpty(); } else { getRawBounds(mTmpRect2); } } if (!Objects.equals(getRequestedOverrideBounds(), mTmpRect2)) { resize(mTmpRect2, false /*preserveWindows*/, true /*deferResume*/); } } finally { mAtmService.continueWindowLayout(); } mRootWindowContainer.ensureActivitiesVisible(null, 0, PRESERVE_WINDOWS); mRootWindowContainer.resumeFocusedStacksTopActivities(); final boolean pinnedToFullscreen = currentMode == WINDOWING_MODE_PINNED && windowingMode == WINDOWING_MODE_FULLSCREEN; if (pinnedToFullscreen && topActivity != null && !isForceHidden()) { mDisplayContent.getPinnedStackController().setPipWindowingModeChanging(true); try { // Report orientation as soon as possible so that the display can freeze earlier if // the display orientation will be changed. Because the surface bounds of activity // may have been set to fullscreen but the activity hasn't redrawn its content yet, // the rotation animation needs to capture snapshot earlier to avoid animating from // an intermediate state. topActivity.reportDescendantOrientationChangeIfNeeded(); } finally { mDisplayContent.getPinnedStackController().setPipWindowingModeChanging(false); } } } @Override public boolean isCompatible(int windowingMode, int activityType) { // TODO: Should we just move this to ConfigurationContainer? if (activityType == ACTIVITY_TYPE_UNDEFINED) { // Undefined activity types end up in a standard stack once the stack is created on a // display, so they should be considered compatible. activityType = ACTIVITY_TYPE_STANDARD; } return super.isCompatible(windowingMode, activityType); } /** Resume next focusable stack after reparenting to another display. */ void postReparent() { adjustFocusToNextFocusableTask("reparent", true /* allowFocusSelf */, true /* moveDisplayToTop */); mRootWindowContainer.resumeFocusedStacksTopActivities(); // Update visibility of activities before notifying WM. This way it won't try to resize // windows that are no longer visible. mRootWindowContainer.ensureActivitiesVisible(null /* starting */, 0 /* configChanges */, !PRESERVE_WINDOWS); } DisplayContent getDisplay() { return getDisplayContent(); } /** @return true if the stack can only contain one task */ boolean isSingleTaskInstance() { final DisplayContent display = getDisplay(); return display != null && display.isSingleTaskInstance(); } final boolean isHomeOrRecentsStack() { return isActivityTypeHome() || isActivityTypeRecents(); } final boolean isOnHomeDisplay() { return getDisplayId() == DEFAULT_DISPLAY; } void moveToFront(String reason) { moveToFront(reason, null); } /** * @param reason The reason for moving the stack to the front. * @param task If non-null, the task will be moved to the top of the stack. * */ void moveToFront(String reason, Task task) { if (!isAttached()) { return; } final TaskDisplayArea taskDisplayArea = getDisplayArea(); if (inSplitScreenSecondaryWindowingMode()) { // If the stack is in split-screen secondary mode, we need to make sure we move the // primary split-screen stack forward in the case it is currently behind a fullscreen // stack so both halves of the split-screen appear on-top and the fullscreen stack isn't // cutting between them. // TODO(b/70677280): This is a workaround until we can fix as part of b/70677280. final ActivityStack topFullScreenStack = taskDisplayArea.getTopStackInWindowingMode(WINDOWING_MODE_FULLSCREEN); if (topFullScreenStack != null) { final ActivityStack primarySplitScreenStack = taskDisplayArea.getRootSplitScreenPrimaryTask(); if (primarySplitScreenStack != null && taskDisplayArea.getIndexOf(topFullScreenStack) > taskDisplayArea.getIndexOf(primarySplitScreenStack)) { primarySplitScreenStack.moveToFront(reason + " splitScreenToTop"); } } } if (!isActivityTypeHome() && returnsToHomeStack()) { // Make sure the home stack is behind this stack since that is where we should return to // when this stack is no longer visible. taskDisplayArea.moveHomeStackToFront(reason + " returnToHome"); } if (isRootTask()) { taskDisplayArea.positionStackAtTop(this, false /* includingParents */, reason); } if (task == null) { task = this; } task.getParent().positionChildAt(POSITION_TOP, task, true /* includingParents */); } /** * This moves 'task' to the back of this task and also recursively moves this task to the back * of its parents (if applicable). * * @param reason The reason for moving the stack to the back. * @param task If non-null, the task will be moved to the bottom of the stack. **/ void moveToBack(String reason, Task task) { if (!isAttached()) { return; } final TaskDisplayArea displayArea = getDisplayArea(); if (!mCreatedByOrganizer) { // If this is just a normal task, so move to back of parent and then move 'task' to // back of this. final WindowContainer parent = getParent(); final Task parentTask = parent != null ? parent.asTask() : null; if (parentTask != null) { ((ActivityStack) parentTask).moveToBack(reason, this); } else { displayArea.positionStackAtBottom(this, reason); } if (task != null && task != this) { positionChildAtBottom(task); } return; } if (task == null || task == this) { return; } // This is a created-by-organizer task. In this case, let the organizer deal with this // task's ordering. However, we still need to move 'task' to back. The intention is that // this ends up behind the home-task so that it is made invisible; so, if the home task // is not a child of this, reparent 'task' to the back of the home task's actual parent. displayArea.positionTaskBehindHome((ActivityStack) task); } // TODO: Should each user have there own stacks? @Override void switchUser(int userId) { if (mCurrentUser == userId) { return; } mCurrentUser = userId; super.switchUser(userId); forAllLeafTasks((t) -> { if (t.showToCurrentUser() && t != this) { mChildren.remove(t); mChildren.add(t); } }, true /* traverseTopToBottom */); } void minimalResumeActivityLocked(ActivityRecord r) { if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to RESUMED: " + r + " (starting new instance)" + " callers=" + Debug.getCallers(5)); r.setState(RESUMED, "minimalResumeActivityLocked"); r.completeResumeLocked(); } private void clearLaunchTime(ActivityRecord r) { // Make sure that there is no activity waiting for this to launch. if (!mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { mStackSupervisor.removeIdleTimeoutForActivity(r); mStackSupervisor.scheduleIdleTimeout(r); } } void awakeFromSleepingLocked() { // Ensure activities are no longer sleeping. forAllActivities((Consumer) (r) -> r.setSleeping(false)); if (mPausingActivity != null) { Slog.d(TAG, "awakeFromSleepingLocked: previously pausing activity didn't pause"); mPausingActivity.activityPaused(true); } } void checkReadyForSleep() { if (shouldSleepActivities() && goToSleepIfPossible(false /* shuttingDown */)) { mStackSupervisor.checkReadyForSleepLocked(true /* allowDelay */); } } /** * Tries to put the activities in the stack to sleep. * * If the stack is not in a state where its activities can be put to sleep, this function will * start any necessary actions to move the stack into such a state. It is expected that this * function get called again when those actions complete. * * @param shuttingDown true when the called because the device is shutting down. * @return true if the stack finished going to sleep, false if the stack only started the * process of going to sleep (checkReadyForSleep will be called when that process finishes). */ boolean goToSleepIfPossible(boolean shuttingDown) { boolean shouldSleep = true; if (mResumedActivity != null) { // Still have something resumed; can't sleep until it is paused. if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Sleep needs to pause " + mResumedActivity); if (DEBUG_USER_LEAVING) Slog.v(TAG_USER_LEAVING, "Sleep => pause with userLeaving=false"); startPausingLocked(false /* userLeaving */, true /* uiSleeping */, null /* resuming */); shouldSleep = false ; } else if (mPausingActivity != null) { // Still waiting for something to pause; can't sleep yet. if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Sleep still waiting to pause " + mPausingActivity); shouldSleep = false; } if (!shuttingDown) { if (containsActivityFromStack(mStackSupervisor.mStoppingActivities)) { // Still need to tell some activities to stop; can't sleep yet. if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Sleep still need to stop " + mStackSupervisor.mStoppingActivities.size() + " activities"); mStackSupervisor.scheduleIdle(); shouldSleep = false; } } if (shouldSleep) { goToSleep(); } return shouldSleep; } void goToSleep() { // Make sure all visible activities are now sleeping. This will update the activity's // visibility and onStop() will be called. forAllActivities((r) -> { if (r.isState(STARTED, RESUMED, PAUSING, PAUSED, STOPPING, STOPPED)) { r.setSleeping(true); } }); // Ensure visibility after updating sleep states without updating configuration, // as activities are about to be sent to sleep. ensureActivitiesVisible(null /* starting */, 0 /* configChanges */, !PRESERVE_WINDOWS); } private boolean containsActivityFromStack(List rs) { for (ActivityRecord r : rs) { if (r.getRootTask() == this) { return true; } } return false; } /** * Start pausing the currently resumed activity. It is an error to call this if there * is already an activity being paused or there is no resumed activity. * * @param userLeaving True if this should result in an onUserLeaving to the current activity. * @param uiSleeping True if this is happening with the user interface going to sleep (the * screen turning off). * @param resuming The activity we are currently trying to resume or null if this is not being * called as part of resuming the top activity, so we shouldn't try to instigate * a resume here if not null. * @return Returns true if an activity now is in the PAUSING state, and we are waiting for * it to tell us when it is done. */ final boolean startPausingLocked(boolean userLeaving, boolean uiSleeping, ActivityRecord resuming) { if (mPausingActivity != null) { Slog.wtf(TAG, "Going to pause when pause is already pending for " + mPausingActivity + " state=" + mPausingActivity.getState()); if (!shouldSleepActivities()) { // Avoid recursion among check for sleep and complete pause during sleeping. // Because activity will be paused immediately after resume, just let pause // be completed by the order of activity paused from clients. completePauseLocked(false, resuming); } } ActivityRecord prev = mResumedActivity; if (prev == null) { if (resuming == null) { Slog.wtf(TAG, "Trying to pause when nothing is resumed"); mRootWindowContainer.resumeFocusedStacksTopActivities(); } return false; } if (prev == resuming) { Slog.wtf(TAG, "Trying to pause activity that is in process of being resumed"); return false; } if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to PAUSING: " + prev); else if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Start pausing: " + prev); mPausingActivity = prev; mLastPausedActivity = prev; mLastNoHistoryActivity = prev.isNoHistory() ? prev : null; prev.setState(PAUSING, "startPausingLocked"); prev.getTask().touchActiveTime(); clearLaunchTime(prev); mAtmService.updateCpuStats(); boolean pauseImmediately = false; if (resuming != null && (resuming.info.flags & FLAG_RESUME_WHILE_PAUSING) != 0) { // If the flag RESUME_WHILE_PAUSING is set, then continue to schedule the previous // activity to be paused, while at the same time resuming the new resume activity // only if the previous activity can't go into Pip since we want to give Pip // activities a chance to enter Pip before resuming the next activity. final boolean lastResumedCanPip = prev != null && prev.checkEnterPictureInPictureState( "shouldResumeWhilePausing", userLeaving); if (!lastResumedCanPip) { pauseImmediately = true; } } if (prev.attachedToProcess()) { if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Enqueueing pending pause: " + prev); try { EventLogTags.writeWmPauseActivity(prev.mUserId, System.identityHashCode(prev), prev.shortComponentName, "userLeaving=" + userLeaving); mAtmService.getLifecycleManager().scheduleTransaction(prev.app.getThread(), prev.appToken, PauseActivityItem.obtain(prev.finishing, userLeaving, prev.configChangeFlags, pauseImmediately)); } catch (Exception e) { // Ignore exception, if process died other code will cleanup. Slog.w(TAG, "Exception thrown during pause", e); mPausingActivity = null; mLastPausedActivity = null; mLastNoHistoryActivity = null; } } else { mPausingActivity = null; mLastPausedActivity = null; mLastNoHistoryActivity = null; } // If we are not going to sleep, we want to ensure the device is // awake until the next activity is started. if (!uiSleeping && !mAtmService.isSleepingOrShuttingDownLocked()) { mStackSupervisor.acquireLaunchWakelock(); } if (mPausingActivity != null) { // Have the window manager pause its key dispatching until the new // activity has started. If we're pausing the activity just because // the screen is being turned off and the UI is sleeping, don't interrupt // key dispatch; the same activity will pick it up again on wakeup. if (!uiSleeping) { prev.pauseKeyDispatchingLocked(); } else if (DEBUG_PAUSE) { Slog.v(TAG_PAUSE, "Key dispatch not paused for screen off"); } if (pauseImmediately) { // If the caller said they don't want to wait for the pause, then complete // the pause now. completePauseLocked(false, resuming); return false; } else { prev.schedulePauseTimeout(); return true; } } else { // This activity failed to schedule the // pause, so just treat it as being paused now. if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Activity not running, resuming next."); if (resuming == null) { mRootWindowContainer.resumeFocusedStacksTopActivities(); } return false; } } @VisibleForTesting void completePauseLocked(boolean resumeNext, ActivityRecord resuming) { ActivityRecord prev = mPausingActivity; if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Complete pause: " + prev); if (prev != null) { prev.setWillCloseOrEnterPip(false); final boolean wasStopping = prev.isState(STOPPING); prev.setState(PAUSED, "completePausedLocked"); if (prev.finishing) { if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Executing finish of activity: " + prev); prev = prev.completeFinishing("completePausedLocked"); } else if (prev.hasProcess()) { if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Enqueue pending stop if needed: " + prev + " wasStopping=" + wasStopping + " visibleRequested=" + prev.mVisibleRequested); if (prev.deferRelaunchUntilPaused) { // Complete the deferred relaunch that was waiting for pause to complete. if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Re-launching after pause: " + prev); prev.relaunchActivityLocked(prev.preserveWindowOnDeferredRelaunch); } else if (wasStopping) { // We are also stopping, the stop request must have gone soon after the pause. // We can't clobber it, because the stop confirmation will not be handled. // We don't need to schedule another stop, we only need to let it happen. prev.setState(STOPPING, "completePausedLocked"); } else if (!prev.mVisibleRequested || shouldSleepOrShutDownActivities()) { // Clear out any deferred client hide we might currently have. prev.setDeferHidingClient(false); // If we were visible then resumeTopActivities will release resources before // stopping. prev.addToStopping(true /* scheduleIdle */, false /* idleDelayed */, "completePauseLocked"); } } else { if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "App died during pause, not stopping: " + prev); prev = null; } // It is possible the activity was freezing the screen before it was paused. // In that case go ahead and remove the freeze this activity has on the screen // since it is no longer visible. if (prev != null) { prev.stopFreezingScreenLocked(true /*force*/); } mPausingActivity = null; } if (resumeNext) { final ActivityStack topStack = mRootWindowContainer.getTopDisplayFocusedStack(); if (topStack != null && !topStack.shouldSleepOrShutDownActivities()) { mRootWindowContainer.resumeFocusedStacksTopActivities(topStack, prev, null); } else { checkReadyForSleep(); final ActivityRecord top = topStack != null ? topStack.topRunningActivity() : null; if (top == null || (prev != null && top != prev)) { // If there are no more activities available to run, do resume anyway to start // something. Also if the top activity on the stack is not the just paused // activity, we need to go ahead and resume it to ensure we complete an // in-flight app switch. mRootWindowContainer.resumeFocusedStacksTopActivities(); } } } if (prev != null) { prev.resumeKeyDispatchingLocked(); if (prev.hasProcess() && prev.cpuTimeAtResume > 0) { final long diff = prev.app.getCpuTime() - prev.cpuTimeAtResume; if (diff > 0) { final Runnable r = PooledLambda.obtainRunnable( ActivityManagerInternal::updateForegroundTimeIfOnBattery, mAtmService.mAmInternal, prev.info.packageName, prev.info.applicationInfo.uid, diff); mAtmService.mH.post(r); } } prev.cpuTimeAtResume = 0; // reset it } mRootWindowContainer.ensureActivitiesVisible(resuming, 0, !PRESERVE_WINDOWS); // Notify when the task stack has changed, but only if visibilities changed (not just // focus). Also if there is an active pinned stack - we always want to notify it about // task stack changes, because its positioning may depend on it. if (mStackSupervisor.mAppVisibilitiesChangedSinceLastPause || (getDisplayArea() != null && getDisplayArea().hasPinnedTask())) { mAtmService.getTaskChangeNotificationController().notifyTaskStackChanged(); mStackSupervisor.mAppVisibilitiesChangedSinceLastPause = false; } } boolean isTopStackInDisplayArea() { final TaskDisplayArea taskDisplayArea = getDisplayArea(); return taskDisplayArea != null && taskDisplayArea.isTopStack(this); } /** * @return {@code true} if this is the focused stack on its current display, {@code false} * otherwise. */ boolean isFocusedStackOnDisplay() { final DisplayContent display = getDisplay(); return display != null && this == display.getFocusedStack(); } /** * Make sure that all activities that need to be visible in the stack (that is, they * currently can be seen by the user) actually are and update their configuration. * @param starting The top most activity in the task. * The activity is either starting or resuming. * Caller should ensure starting activity is visible. * @param preserveWindows Flag indicating whether windows should be preserved when updating * configuration in {@link mEnsureActivitiesVisibleHelper}. * @param configChanges Parts of the configuration that changed for this activity for evaluating * if the screen should be frozen as part of * {@link mEnsureActivitiesVisibleHelper}. * */ void ensureActivitiesVisible(@Nullable ActivityRecord starting, int configChanges, boolean preserveWindows) { ensureActivitiesVisible(starting, configChanges, preserveWindows, true /* notifyClients */); } /** * Ensure visibility with an option to also update the configuration of visible activities. * @see #ensureActivitiesVisible(ActivityRecord, int, boolean) * @see RootWindowContainer#ensureActivitiesVisible(ActivityRecord, int, boolean) * @param starting The top most activity in the task. * The activity is either starting or resuming. * Caller should ensure starting activity is visible. * @param notifyClients Flag indicating whether the visibility updates should be sent to the * clients in {@link mEnsureActivitiesVisibleHelper}. * @param preserveWindows Flag indicating whether windows should be preserved when updating * configuration in {@link mEnsureActivitiesVisibleHelper}. * @param configChanges Parts of the configuration that changed for this activity for evaluating * if the screen should be frozen as part of * {@link mEnsureActivitiesVisibleHelper}. */ // TODO: Should be re-worked based on the fact that each task as a stack in most cases. void ensureActivitiesVisible(@Nullable ActivityRecord starting, int configChanges, boolean preserveWindows, boolean notifyClients) { mTopActivityOccludesKeyguard = false; mTopDismissingKeyguardActivity = null; mStackSupervisor.beginActivityVisibilityUpdate(); try { mEnsureActivitiesVisibleHelper.process( starting, configChanges, preserveWindows, notifyClients); if (mTranslucentActivityWaiting != null && mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { // Nothing is getting drawn or everything was already visible, don't wait for timeout. notifyActivityDrawnLocked(null); } } finally { mStackSupervisor.endActivityVisibilityUpdate(); } } /** * @return true if the top visible activity wants to occlude the Keyguard, false otherwise */ boolean topActivityOccludesKeyguard() { return mTopActivityOccludesKeyguard; } /** * Returns true if this stack should be resized to match the bounds specified by * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. */ boolean shouldResizeStackWithLaunchBounds() { return inPinnedWindowingMode(); } // TODO(NOW!) /** * Returns {@code true} if this is the top-most split-screen-primary or * split-screen-secondary stack, {@code false} otherwise. */ boolean isTopSplitScreenStack() { return inSplitScreenWindowingMode() && this == getDisplayArea().getTopStackInWindowingMode(getWindowingMode()); } /** * @return the top most visible activity that wants to dismiss Keyguard */ ActivityRecord getTopDismissingKeyguardActivity() { return mTopDismissingKeyguardActivity; } /** * Checks whether {@param r} should be visible depending on Keyguard state and updates * {@link #mTopActivityOccludesKeyguard} and {@link #mTopDismissingKeyguardActivity} if * necessary. * * @return true if {@param r} is visible taken Keyguard state into account, false otherwise */ boolean checkKeyguardVisibility(ActivityRecord r, boolean shouldBeVisible, boolean isTop) { int displayId = getDisplayId(); if (displayId == INVALID_DISPLAY) displayId = DEFAULT_DISPLAY; final boolean keyguardOrAodShowing = mStackSupervisor.getKeyguardController() .isKeyguardOrAodShowing(displayId); final boolean keyguardLocked = mStackSupervisor.getKeyguardController().isKeyguardLocked(); final boolean showWhenLocked = r.canShowWhenLocked(); final boolean dismissKeyguard = r.containsDismissKeyguardWindow(); if (shouldBeVisible) { if (dismissKeyguard && mTopDismissingKeyguardActivity == null) { mTopDismissingKeyguardActivity = r; } // Only the top activity may control occluded, as we can't occlude the Keyguard if the // top app doesn't want to occlude it. if (isTop) { mTopActivityOccludesKeyguard |= showWhenLocked; } final boolean canShowWithKeyguard = canShowWithInsecureKeyguard() && mStackSupervisor.getKeyguardController().canDismissKeyguard(); if (canShowWithKeyguard) { return true; } } if (keyguardOrAodShowing) { // If keyguard is showing, nothing is visible, except if we are able to dismiss Keyguard // right away and AOD isn't visible. return shouldBeVisible && mStackSupervisor.getKeyguardController() .canShowActivityWhileKeyguardShowing(r, dismissKeyguard); } else if (keyguardLocked) { return shouldBeVisible && mStackSupervisor.getKeyguardController().canShowWhileOccluded( dismissKeyguard, showWhenLocked); } else { return shouldBeVisible; } } /** * Check if the display to which this stack is attached has * {@link Display#FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD} applied. */ boolean canShowWithInsecureKeyguard() { final DisplayContent displayContent = getDisplay(); if (displayContent == null) { throw new IllegalStateException("Stack is not attached to any display, stackId=" + getRootTaskId()); } final int flags = displayContent.mDisplay.getFlags(); return (flags & FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD) != 0; } void checkTranslucentActivityWaiting(ActivityRecord top) { if (mTranslucentActivityWaiting != top) { mUndrawnActivitiesBelowTopTranslucent.clear(); if (mTranslucentActivityWaiting != null) { // Call the callback with a timeout indication. notifyActivityDrawnLocked(null); mTranslucentActivityWaiting = null; } mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); } } void convertActivityToTranslucent(ActivityRecord r) { mTranslucentActivityWaiting = r; mUndrawnActivitiesBelowTopTranslucent.clear(); mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); } /** * Called as activities below the top translucent activity are redrawn. When the last one is * redrawn notify the top activity by calling * {@link Activity#onTranslucentConversionComplete}. * * @param r The most recent background activity to be drawn. Or, if r is null then a timeout * occurred and the activity will be notified immediately. */ void notifyActivityDrawnLocked(ActivityRecord r) { if ((r == null) || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { // The last undrawn activity below the top has just been drawn. If there is an // opaque activity at the top, notify it that it can become translucent safely now. final ActivityRecord waitingActivity = mTranslucentActivityWaiting; mTranslucentActivityWaiting = null; mUndrawnActivitiesBelowTopTranslucent.clear(); mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); if (waitingActivity != null) { mWmService.setWindowOpaqueLocked(waitingActivity.appToken, false); if (waitingActivity.attachedToProcess()) { try { waitingActivity.app.getThread().scheduleTranslucentConversionComplete( waitingActivity.appToken, r != null); } catch (RemoteException e) { } } } } } /** @see ActivityRecord#cancelInitializing() */ void cancelInitializingActivities() { // We don't want to clear starting window for activities that aren't behind fullscreen // activities as we need to display their starting window until they are done initializing. checkBehindFullscreenActivity(null /* toCheck */, ActivityRecord::cancelInitializing); } /** * If an activity {@param toCheck} is given, this method returns {@code true} if the activity * is occluded by any fullscreen activity. If there is no {@param toCheck} and the handling * function {@param handleBehindFullscreenActivity} is given, this method will pass all occluded * activities to the function. */ boolean checkBehindFullscreenActivity(ActivityRecord toCheck, Consumer handleBehindFullscreenActivity) { return mCheckBehindFullscreenActivityHelper.process( toCheck, handleBehindFullscreenActivity); } /** * Ensure that the top activity in the stack is resumed. * * @param prev The previously resumed activity, for when in the process * of pausing; can be null to call from elsewhere. * @param options Activity options. * * @return Returns true if something is being resumed, or false if * nothing happened. * * NOTE: It is not safe to call this method directly as it can cause an activity in a * non-focused stack to be resumed. * Use {@link RootWindowContainer#resumeFocusedStacksTopActivities} to resume the * right activity for the current system state. */ @GuardedBy("mService") boolean resumeTopActivityUncheckedLocked(ActivityRecord prev, ActivityOptions options) { if (mInResumeTopActivity) { // Don't even start recursing. return false; } boolean result = false; try { // Protect against recursion. mInResumeTopActivity = true; result = resumeTopActivityInnerLocked(prev, options); // When resuming the top activity, it may be necessary to pause the top activity (for // example, returning to the lock screen. We suppress the normal pause logic in // {@link #resumeTopActivityUncheckedLocked}, since the top activity is resumed at the // end. We call the {@link ActivityStackSupervisor#checkReadyForSleepLocked} again here // to ensure any necessary pause logic occurs. In the case where the Activity will be // shown regardless of the lock screen, the call to // {@link ActivityStackSupervisor#checkReadyForSleepLocked} is skipped. final ActivityRecord next = topRunningActivity(true /* focusableOnly */); if (next == null || !next.canTurnScreenOn()) { checkReadyForSleep(); } } finally { mInResumeTopActivity = false; } return result; } @GuardedBy("mService") private boolean resumeTopActivityInnerLocked(ActivityRecord prev, ActivityOptions options) { if (!mAtmService.isBooting() && !mAtmService.isBooted()) { // Not ready yet! return false; } // Find the next top-most activity to resume in this stack that is not finishing and is // focusable. If it is not focusable, we will fall into the case below to resume the // top activity in the next focusable task. ActivityRecord next = topRunningActivity(true /* focusableOnly */); final boolean hasRunningActivity = next != null; // TODO: Maybe this entire condition can get removed? if (hasRunningActivity && !isAttached()) { return false; } mRootWindowContainer.cancelInitializingActivities(); // Remember how we'll process this pause/resume situation, and ensure // that the state is reset however we wind up proceeding. boolean userLeaving = mStackSupervisor.mUserLeaving; mStackSupervisor.mUserLeaving = false; if (!hasRunningActivity) { // There are no activities left in the stack, let's look somewhere else. return resumeNextFocusableActivityWhenStackIsEmpty(prev, options); } next.delayedResume = false; final TaskDisplayArea taskDisplayArea = getDisplayArea(); // If the top activity is the resumed one, nothing to do. if (mResumedActivity == next && next.isState(RESUMED) && taskDisplayArea.allResumedActivitiesComplete()) { // Make sure we have executed any pending transitions, since there // should be nothing left to do at this point. executeAppTransition(options); if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Top activity resumed " + next); return false; } if (!next.canResumeByCompat()) { return false; } // If we are currently pausing an activity, then don't do anything until that is done. final boolean allPausedComplete = mRootWindowContainer.allPausedActivitiesComplete(); if (!allPausedComplete) { if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) { Slog.v(TAG_PAUSE, "resumeTopActivityLocked: Skip resume: some activity pausing."); } return false; } // If we are sleeping, and there is no resumed activity, and the top activity is paused, // well that is the state we want. if (shouldSleepOrShutDownActivities() && mLastPausedActivity == next && mRootWindowContainer.allPausedActivitiesComplete()) { // If the current top activity may be able to occlude keyguard but the occluded state // has not been set, update visibility and check again if we should continue to resume. boolean nothingToResume = true; if (!mAtmService.mShuttingDown) { final boolean canShowWhenLocked = !mTopActivityOccludesKeyguard && next.canShowWhenLocked(); final boolean mayDismissKeyguard = mTopDismissingKeyguardActivity != next && next.containsDismissKeyguardWindow(); if (canShowWhenLocked || mayDismissKeyguard) { ensureActivitiesVisible(null /* starting */, 0 /* configChanges */, !PRESERVE_WINDOWS); nothingToResume = shouldSleepActivities(); } else if (next.currentLaunchCanTurnScreenOn() && next.canTurnScreenOn()) { nothingToResume = false; } } if (nothingToResume) { // Make sure we have executed any pending transitions, since there // should be nothing left to do at this point. executeAppTransition(options); if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Going to sleep and all paused"); return false; } } // Make sure that the user who owns this activity is started. If not, // we will just leave it as is because someone should be bringing // another user's activities to the top of the stack. if (!mAtmService.mAmInternal.hasStartedUserState(next.mUserId)) { Slog.w(TAG, "Skipping resume of top activity " + next + ": user " + next.mUserId + " is stopped"); return false; } // The activity may be waiting for stop, but that is no longer // appropriate for it. mStackSupervisor.mStoppingActivities.remove(next); next.setSleeping(false); if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Resuming " + next); // If we are currently pausing an activity, then don't do anything until that is done. if (!mRootWindowContainer.allPausedActivitiesComplete()) { if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG_PAUSE, "resumeTopActivityLocked: Skip resume: some activity pausing."); return false; } mStackSupervisor.setLaunchSource(next.info.applicationInfo.uid); ActivityRecord lastResumed = null; final ActivityStack lastFocusedStack = taskDisplayArea.getLastFocusedStack(); if (lastFocusedStack != null && lastFocusedStack != this) { // So, why aren't we using prev here??? See the param comment on the method. prev doesn't // represent the last resumed activity. However, the last focus stack does if it isn't null. lastResumed = lastFocusedStack.mResumedActivity; if (userLeaving && inMultiWindowMode() && lastFocusedStack.shouldBeVisible(next)) { // The user isn't leaving if this stack is the multi-window mode and the last // focused stack should still be visible. if(DEBUG_USER_LEAVING) Slog.i(TAG_USER_LEAVING, "Overriding userLeaving to false" + " next=" + next + " lastResumed=" + lastResumed); userLeaving = false; } } boolean pausing = taskDisplayArea.pauseBackStacks(userLeaving, next); if (mResumedActivity != null) { if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Pausing " + mResumedActivity); pausing |= startPausingLocked(userLeaving, false /* uiSleeping */, next); } if (pausing) { if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG_STATES, "resumeTopActivityLocked: Skip resume: need to start pausing"); // At this point we want to put the upcoming activity's process // at the top of the LRU list, since we know we will be needing it // very soon and it would be a waste to let it get killed if it // happens to be sitting towards the end. if (next.attachedToProcess()) { next.app.updateProcessInfo(false /* updateServiceConnectionActivities */, true /* activityChange */, false /* updateOomAdj */, false /* addPendingTopUid */); } else if (!next.isProcessRunning()) { // Since the start-process is asynchronous, if we already know the process of next // activity isn't running, we can start the process earlier to save the time to wait // for the current activity to be paused. final boolean isTop = this == taskDisplayArea.getFocusedStack(); mAtmService.startProcessAsync(next, false /* knownToBeDead */, isTop, isTop ? "pre-top-activity" : "pre-activity"); } if (lastResumed != null) { lastResumed.setWillCloseOrEnterPip(true); } return true; } else if (mResumedActivity == next && next.isState(RESUMED) && taskDisplayArea.allResumedActivitiesComplete()) { // It is possible for the activity to be resumed when we paused back stacks above if the // next activity doesn't have to wait for pause to complete. // So, nothing else to-do except: // Make sure we have executed any pending transitions, since there // should be nothing left to do at this point. executeAppTransition(options); if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Top activity resumed (dontWaitForPause) " + next); return true; } // If the most recent activity was noHistory but was only stopped rather // than stopped+finished because the device went to sleep, we need to make // sure to finish it as we're making a new activity topmost. if (shouldSleepActivities() && mLastNoHistoryActivity != null && !mLastNoHistoryActivity.finishing) { if (DEBUG_STATES) Slog.d(TAG_STATES, "no-history finish of " + mLastNoHistoryActivity + " on new resume"); mLastNoHistoryActivity.finishIfPossible("resume-no-history", false /* oomAdj */); mLastNoHistoryActivity = null; } if (prev != null && prev != next && next.nowVisible) { // The next activity is already visible, so hide the previous // activity's windows right now so we can show the new one ASAP. // We only do this if the previous is finishing, which should mean // it is on top of the one being resumed so hiding it quickly // is good. Otherwise, we want to do the normal route of allowing // the resumed activity to be shown so we can decide if the // previous should actually be hidden depending on whether the // new one is found to be full-screen or not. if (prev.finishing) { prev.setVisibility(false); if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Not waiting for visible to hide: " + prev + ", nowVisible=" + next.nowVisible); } else { if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Previous already visible but still waiting to hide: " + prev + ", nowVisible=" + next.nowVisible); } } // Launching this app's activity, make sure the app is no longer // considered stopped. try { mAtmService.getPackageManager().setPackageStoppedState( next.packageName, false, next.mUserId); /* TODO: Verify if correct userid */ } catch (RemoteException e1) { } catch (IllegalArgumentException e) { Slog.w(TAG, "Failed trying to unstop package " + next.packageName + ": " + e); } // We are starting up the next activity, so tell the window manager // that the previous one will be hidden soon. This way it can know // to ignore it when computing the desired screen orientation. boolean anim = true; final DisplayContent dc = taskDisplayArea.mDisplayContent; if (prev != null) { if (prev.finishing) { if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare close transition: prev=" + prev); if (mStackSupervisor.mNoAnimActivities.contains(prev)) { anim = false; dc.prepareAppTransition(TRANSIT_NONE, false); } else { dc.prepareAppTransition( prev.getTask() == next.getTask() ? TRANSIT_ACTIVITY_CLOSE : TRANSIT_TASK_CLOSE, false); } prev.setVisibility(false); } else { if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare open transition: prev=" + prev); if (mStackSupervisor.mNoAnimActivities.contains(next)) { anim = false; dc.prepareAppTransition(TRANSIT_NONE, false); } else { dc.prepareAppTransition( prev.getTask() == next.getTask() ? TRANSIT_ACTIVITY_OPEN : next.mLaunchTaskBehind ? TRANSIT_TASK_OPEN_BEHIND : TRANSIT_TASK_OPEN, false); } } } else { if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare open transition: no previous"); if (mStackSupervisor.mNoAnimActivities.contains(next)) { anim = false; dc.prepareAppTransition(TRANSIT_NONE, false); } else { dc.prepareAppTransition(TRANSIT_ACTIVITY_OPEN, false); } } if (anim) { next.applyOptionsLocked(); } else { next.clearOptionsLocked(); } mStackSupervisor.mNoAnimActivities.clear(); if (next.attachedToProcess()) { if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Resume running: " + next + " stopped=" + next.stopped + " visibleRequested=" + next.mVisibleRequested); // If the previous activity is translucent, force a visibility update of // the next activity, so that it's added to WM's opening app list, and // transition animation can be set up properly. // For example, pressing Home button with a translucent activity in focus. // Launcher is already visible in this case. If we don't add it to opening // apps, maybeUpdateTransitToWallpaper() will fail to identify this as a // TRANSIT_WALLPAPER_OPEN animation, and run some funny animation. final boolean lastActivityTranslucent = lastFocusedStack != null && (lastFocusedStack.inMultiWindowMode() || (lastFocusedStack.mLastPausedActivity != null && !lastFocusedStack.mLastPausedActivity.occludesParent())); // This activity is now becoming visible. if (!next.mVisibleRequested || next.stopped || lastActivityTranslucent) { next.setVisibility(true); } // schedule launch ticks to collect information about slow apps. next.startLaunchTickingLocked(); ActivityRecord lastResumedActivity = lastFocusedStack == null ? null : lastFocusedStack.mResumedActivity; final ActivityState lastState = next.getState(); mAtmService.updateCpuStats(); if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to RESUMED: " + next + " (in existing)"); next.setState(RESUMED, "resumeTopActivityInnerLocked"); next.app.updateProcessInfo(false /* updateServiceConnectionActivities */, true /* activityChange */, true /* updateOomAdj */, true /* addPendingTopUid */); // Have the window manager re-evaluate the orientation of // the screen based on the new activity order. boolean notUpdated = true; // Activity should also be visible if set mLaunchTaskBehind to true (see // ActivityRecord#shouldBeVisibleIgnoringKeyguard()). if (shouldBeVisible(next)) { // We have special rotation behavior when here is some active activity that // requests specific orientation or Keyguard is locked. Make sure all activity // visibilities are set correctly as well as the transition is updated if needed // to get the correct rotation behavior. Otherwise the following call to update // the orientation may cause incorrect configurations delivered to client as a // result of invisible window resize. // TODO: Remove this once visibilities are set correctly immediately when // starting an activity. notUpdated = !mRootWindowContainer.ensureVisibilityAndConfig(next, getDisplayId(), true /* markFrozenIfConfigChanged */, false /* deferResume */); } if (notUpdated) { // The configuration update wasn't able to keep the existing // instance of the activity, and instead started a new one. // We should be all done, but let's just make sure our activity // is still at the top and schedule another run if something // weird happened. ActivityRecord nextNext = topRunningActivity(); if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG_STATES, "Activity config changed during resume: " + next + ", new next: " + nextNext); if (nextNext != next) { // Do over! mStackSupervisor.scheduleResumeTopActivities(); } if (!next.mVisibleRequested || next.stopped) { next.setVisibility(true); } next.completeResumeLocked(); return true; } try { final ClientTransaction transaction = ClientTransaction.obtain(next.app.getThread(), next.appToken); // Deliver all pending results. ArrayList a = next.results; if (a != null) { final int N = a.size(); if (!next.finishing && N > 0) { if (DEBUG_RESULTS) Slog.v(TAG_RESULTS, "Delivering results to " + next + ": " + a); transaction.addCallback(ActivityResultItem.obtain(a)); } } if (next.newIntents != null) { transaction.addCallback( NewIntentItem.obtain(next.newIntents, true /* resume */)); } // Well the app will no longer be stopped. // Clear app token stopped state in window manager if needed. next.notifyAppResumed(next.stopped); EventLogTags.writeWmResumeActivity(next.mUserId, System.identityHashCode(next), next.getTask().mTaskId, next.shortComponentName); next.setSleeping(false); mAtmService.getAppWarningsLocked().onResumeActivity(next); next.app.setPendingUiCleanAndForceProcessStateUpTo(mAtmService.mTopProcessState); next.clearOptionsLocked(); transaction.setLifecycleStateRequest( ResumeActivityItem.obtain(next.app.getReportedProcState(), dc.isNextTransitionForward())); mAtmService.getLifecycleManager().scheduleTransaction(transaction); if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Resumed " + next); } catch (Exception e) { // Whoops, need to restart this activity! if (DEBUG_STATES) Slog.v(TAG_STATES, "Resume failed; resetting state to " + lastState + ": " + next); next.setState(lastState, "resumeTopActivityInnerLocked"); // lastResumedActivity being non-null implies there is a lastStack present. if (lastResumedActivity != null) { lastResumedActivity.setState(RESUMED, "resumeTopActivityInnerLocked"); } Slog.i(TAG, "Restarting because process died: " + next); if (!next.hasBeenLaunched) { next.hasBeenLaunched = true; } else if (SHOW_APP_STARTING_PREVIEW && lastFocusedStack != null && lastFocusedStack.isTopStackInDisplayArea()) { next.showStartingWindow(null /* prev */, false /* newTask */, false /* taskSwitch */); } mStackSupervisor.startSpecificActivity(next, true, false); return true; } // From this point on, if something goes wrong there is no way // to recover the activity. try { next.completeResumeLocked(); } catch (Exception e) { // If any exception gets thrown, toss away this // activity and try the next one. Slog.w(TAG, "Exception thrown during resume of " + next, e); next.finishIfPossible("resume-exception", true /* oomAdj */); return true; } } else { // Whoops, need to restart this activity! if (!next.hasBeenLaunched) { next.hasBeenLaunched = true; } else { if (SHOW_APP_STARTING_PREVIEW) { next.showStartingWindow(null /* prev */, false /* newTask */, false /* taskSwich */); } if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Restarting: " + next); } if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Restarting " + next); mStackSupervisor.startSpecificActivity(next, true, true); } return true; } /** * Resume the next eligible activity in a focusable stack when this one does not have any * running activities left. The focus will be adjusted to the next focusable stack and * top running activities will be resumed in all focusable stacks. However, if the current stack * is a home stack - we have to keep it focused, start and resume a home activity on the current * display instead to make sure that the display is not empty. */ private boolean resumeNextFocusableActivityWhenStackIsEmpty(ActivityRecord prev, ActivityOptions options) { final String reason = "noMoreActivities"; if (!isActivityTypeHome()) { final ActivityStack nextFocusedStack = adjustFocusToNextFocusableTask(reason); if (nextFocusedStack != null) { // Try to move focus to the next visible stack with a running activity if this // stack is not covering the entire screen or is on a secondary display with no home // stack. return mRootWindowContainer.resumeFocusedStacksTopActivities(nextFocusedStack, prev, null /* targetOptions */); } } // If the current stack is a home stack, or if focus didn't switch to a different stack - // just start up the Launcher... ActivityOptions.abort(options); if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeNextFocusableActivityWhenStackIsEmpty: " + reason + ", go home"); return mRootWindowContainer.resumeHomeActivity(prev, reason, getDisplayArea()); } void startActivityLocked(ActivityRecord r, ActivityRecord focusedTopActivity, boolean newTask, boolean keepCurTransition, ActivityOptions options) { Task rTask = r.getTask(); final boolean allowMoveToFront = options == null || !options.getAvoidMoveToFront(); final boolean isOrhasTask = rTask == this || hasChild(rTask); // mLaunchTaskBehind tasks get placed at the back of the task stack. if (!r.mLaunchTaskBehind && allowMoveToFront && (!isOrhasTask || newTask)) { // Last activity in task had been removed or ActivityManagerService is reusing task. // Insert or replace. // Might not even be in. positionChildAtTop(rTask); } Task task = null; if (!newTask && isOrhasTask) { // Starting activity cannot be occluding activity, otherwise starting window could be // remove immediately without transferring to starting activity. final ActivityRecord occludingActivity = getOccludingActivityAbove(r); if (occludingActivity != null) { // Here it is! Now, if this is not yet visible (occluded by another task) to the // user, then just add it without starting; it will get started when the user // navigates back to it. if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " + task, new RuntimeException("here").fillInStackTrace()); rTask.positionChildAtTop(r); ActivityOptions.abort(options); return; } } // Place a new activity at top of stack, so it is next to interact with the user. // If we are not placing the new activity frontmost, we do not want to deliver the // onUserLeaving callback to the actual frontmost activity final Task activityTask = r.getTask(); if (task == activityTask && mChildren.indexOf(task) != (getChildCount() - 1)) { mStackSupervisor.mUserLeaving = false; if (DEBUG_USER_LEAVING) Slog.v(TAG_USER_LEAVING, "startActivity() behind front, mUserLeaving=false"); } task = activityTask; // Slot the activity into the history stack and proceed if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, new RuntimeException("here").fillInStackTrace()); task.positionChildAtTop(r); // The transition animation and starting window are not needed if {@code allowMoveToFront} // is false, because the activity won't be visible. if ((!isHomeOrRecentsStack() || hasActivity()) && allowMoveToFront) { final DisplayContent dc = getDisplay().mDisplayContent; if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare open transition: starting " + r); if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { dc.prepareAppTransition(TRANSIT_NONE, keepCurTransition); mStackSupervisor.mNoAnimActivities.add(r); } else { int transit = TRANSIT_ACTIVITY_OPEN; if (newTask) { if (r.mLaunchTaskBehind) { transit = TRANSIT_TASK_OPEN_BEHIND; } else if (getDisplay().isSingleTaskInstance()) { // If a new task is being launched in a single task display, we don't need // to play normal animation, but need to trigger a callback when an app // transition is actually handled. So ignore already prepared activity, and // override it. transit = TRANSIT_SHOW_SINGLE_TASK_DISPLAY; keepCurTransition = false; } else { // If a new task is being launched, then mark the existing top activity as // supporting picture-in-picture while pausing only if the starting activity // would not be considered an overlay on top of the current activity // (eg. not fullscreen, or the assistant) if (canEnterPipOnTaskSwitch(focusedTopActivity, null /* toFrontTask */, r, options)) { focusedTopActivity.supportsEnterPipOnTaskSwitch = true; } transit = TRANSIT_TASK_OPEN; } } dc.prepareAppTransition(transit, keepCurTransition); mStackSupervisor.mNoAnimActivities.remove(r); } boolean doShow = true; if (newTask) { // Even though this activity is starting fresh, we still need // to reset it to make sure we apply affinities to move any // existing activities from other tasks in to it. // If the caller has requested that the target task be // reset, then do so. if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { resetTaskIfNeeded(r, r); doShow = topRunningNonDelayedActivityLocked(null) == r; } } else if (options != null && options.getAnimationType() == ActivityOptions.ANIM_SCENE_TRANSITION) { doShow = false; } if (r.mLaunchTaskBehind) { // Don't do a starting window for mLaunchTaskBehind. More importantly make sure we // tell WindowManager that r is visible even though it is at the back of the stack. r.setVisibility(true); ensureActivitiesVisible(null, 0, !PRESERVE_WINDOWS); // Go ahead to execute app transition for this activity since the app transition // will not be triggered through the resume channel. getDisplay().mDisplayContent.executeAppTransition(); } else if (SHOW_APP_STARTING_PREVIEW && doShow) { // Figure out if we are transitioning from another activity that is // "has the same starting icon" as the next one. This allows the // window manager to keep the previous window it had previously // created, if it still had one. Task prevTask = r.getTask(); ActivityRecord prev = prevTask.topActivityWithStartingWindow(); if (prev != null) { // We don't want to reuse the previous starting preview if: // (1) The current activity is in a different task. if (prev.getTask() != prevTask) { prev = null; } // (2) The current activity is already displayed. else if (prev.nowVisible) { prev = null; } } r.showStartingWindow(prev, newTask, isTaskSwitch(r, focusedTopActivity)); } } else { // If this is the first activity, don't do any fancy animations, // because there is nothing for it to animate on top of. ActivityOptions.abort(options); } } /** * @return Whether the switch to another task can trigger the currently running activity to * enter PiP while it is pausing (if supported). Only one of {@param toFrontTask} or * {@param toFrontActivity} should be set. */ private boolean canEnterPipOnTaskSwitch(ActivityRecord pipCandidate, Task toFrontTask, ActivityRecord toFrontActivity, ActivityOptions opts) { if (opts != null && opts.disallowEnterPictureInPictureWhileLaunching()) { // Ensure the caller has requested not to trigger auto-enter PiP return false; } if (pipCandidate == null || pipCandidate.inPinnedWindowingMode()) { // Ensure that we do not trigger entering PiP an activity on the pinned stack return false; } final ActivityStack targetStack = toFrontTask != null ? toFrontTask.getStack() : toFrontActivity.getRootTask(); if (targetStack != null && targetStack.isActivityTypeAssistant()) { // Ensure the task/activity being brought forward is not the assistant return false; } return true; } private boolean isTaskSwitch(ActivityRecord r, ActivityRecord topFocusedActivity) { return topFocusedActivity != null && r.getTask() != topFocusedActivity.getTask(); } /** * Reset the task by reparenting the activities that have same affinity to the task or * reparenting the activities that have different affinityies out of the task, while these * activities allow task reparenting. * * @param taskTop Top activity of the task might be reset. * @param newActivity The activity that going to be started. * @return The non-finishing top activity of the task after reset or the original task top * activity if all activities within the task are finishing. */ ActivityRecord resetTaskIfNeeded(ActivityRecord taskTop, ActivityRecord newActivity) { final boolean forceReset = (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; final Task task = taskTop.getTask(); // If ActivityOptions are moved out and need to be aborted or moved to taskTop. final ActivityOptions topOptions = sResetTargetTaskHelper.process(task, forceReset); if (mChildren.contains(task)) { final ActivityRecord newTop = task.getTopNonFinishingActivity(); if (newTop != null) { taskTop = newTop; } } if (topOptions != null) { // If we got some ActivityOptions from an activity on top that // was removed from the task, propagate them to the new real top. taskTop.updateOptionsLocked(topOptions); } return taskTop; } /** * Finish the topmost activity that belongs to the crashed app. We may also finish the activity * that requested launch of the crashed one to prevent launch-crash loop. * @param app The app that crashed. * @param reason Reason to perform this action. * @return The task that was finished in this stack, {@code null} if top running activity does * not belong to the crashed app. */ final Task finishTopCrashedActivityLocked(WindowProcessController app, String reason) { final ActivityRecord r = topRunningActivity(); if (r == null || r.app != app) { return null; } if (r.isActivityTypeHome() && mAtmService.mHomeProcess == app) { // Home activities should not be force-finished as we have nothing else to go // back to. AppErrors will get to it after two crashes in MIN_CRASH_INTERVAL. Slog.w(TAG, " Not force finishing home activity " + r.intent.getComponent().flattenToShortString()); return null; } Slog.w(TAG, " Force finishing activity " + r.intent.getComponent().flattenToShortString()); Task finishedTask = r.getTask(); getDisplay().mDisplayContent.prepareAppTransition( TRANSIT_CRASHING_ACTIVITY_CLOSE, false /* alwaysKeepCurrent */); r.finishIfPossible(reason, false /* oomAdj */); // Also terminate any activities below it that aren't yet stopped, to avoid a situation // where one will get re-start our crashing activity once it gets resumed again. final ActivityRecord activityBelow = getActivityBelow(r); if (activityBelow != null) { if (activityBelow.isState(STARTED, RESUMED, PAUSING, PAUSED)) { if (!activityBelow.isActivityTypeHome() || mAtmService.mHomeProcess != activityBelow.app) { Slog.w(TAG, " Force finishing activity " + activityBelow.intent.getComponent().flattenToShortString()); activityBelow.finishIfPossible(reason, false /* oomAdj */); } } } return finishedTask; } void finishVoiceTask(IVoiceInteractionSession session) { final PooledConsumer c = PooledLambda.obtainConsumer(ActivityStack::finishIfVoiceTask, PooledLambda.__(Task.class), session.asBinder()); forAllLeafTasks(c, true /* traverseTopToBottom */); c.recycle(); } private static void finishIfVoiceTask(Task tr, IBinder binder) { if (tr.voiceSession != null && tr.voiceSession.asBinder() == binder) { tr.forAllActivities((r) -> { if (r.finishing) return; r.finishIfPossible("finish-voice", false /* oomAdj */); tr.mAtmService.updateOomAdj(); }); } else { // Check if any of the activities are using voice final PooledFunction f = PooledLambda.obtainFunction( ActivityStack::finishIfVoiceActivity, PooledLambda.__(ActivityRecord.class), binder); tr.forAllActivities(f); f.recycle(); } } private static boolean finishIfVoiceActivity(ActivityRecord r, IBinder binder) { if (r.voiceSession == null || r.voiceSession.asBinder() != binder) return false; // Inform of cancellation r.clearVoiceSessionLocked(); try { r.app.getThread().scheduleLocalVoiceInteractionStarted(r.appToken, null); } catch (RemoteException re) { // Ok Boomer... } r.mAtmService.finishRunningVoiceLocked(); return true; } /** Finish all activities in the stack without waiting. */ void finishAllActivitiesImmediately() { if (!hasChild()) { removeIfPossible(); return; } forAllActivities((r) -> { Slog.d(TAG, "finishAllActivitiesImmediatelyLocked: finishing " + r); r.destroyIfPossible("finishAllActivitiesImmediately"); }); } /** @return true if the stack behind this one is a standard activity type. */ private boolean inFrontOfStandardStack() { final TaskDisplayArea taskDisplayArea = getDisplayArea(); if (taskDisplayArea == null) { return false; } final int index = taskDisplayArea.getIndexOf(this); if (index == 0) { return false; } final ActivityStack stackBehind = taskDisplayArea.getChildAt(index - 1); return stackBehind.isActivityTypeStandard(); } boolean shouldUpRecreateTaskLocked(ActivityRecord srec, String destAffinity) { // Basic case: for simple app-centric recents, we need to recreate // the task if the affinity has changed. final String affinity = ActivityRecord.getTaskAffinityWithUid(destAffinity, srec.getUid()); if (srec == null || srec.getTask().affinity == null || !srec.getTask().affinity.equals(affinity)) { return true; } // Document-centric case: an app may be split in to multiple documents; // they need to re-create their task if this current activity is the root // of a document, unless simply finishing it will return them to the the // correct app behind. final Task task = srec.getTask(); if (srec.isRootOfTask() && task.getBaseIntent() != null && task.getBaseIntent().isDocument()) { // Okay, this activity is at the root of its task. What to do, what to do... if (!inFrontOfStandardStack()) { // Finishing won't return to an application, so we need to recreate. return true; } // We now need to get the task below it to determine what to do. final Task prevTask = getTaskBelow(task); if (prevTask == null) { Slog.w(TAG, "shouldUpRecreateTask: task not in history for " + srec); return false; } if (!task.affinity.equals(prevTask.affinity)) { // These are different apps, so need to recreate. return true; } } return false; } boolean navigateUpTo(ActivityRecord srec, Intent destIntent, NeededUriGrants destGrants, int resultCode, Intent resultData, NeededUriGrants resultGrants) { if (!srec.attachedToProcess()) { // Nothing to do if the caller is not attached, because this method should be called // from an alive activity. return false; } final Task task = srec.getTask(); if (!srec.isDescendantOf(this)) { return false; } ActivityRecord parent = task.getActivityBelow(srec); boolean foundParentInTask = false; final ComponentName dest = destIntent.getComponent(); if (task.getBottomMostActivity() != srec && dest != null) { final ActivityRecord candidate = task.getActivity((ar) -> ar.info.packageName.equals(dest.getPackageName()) && ar.info.name.equals(dest.getClassName()), srec, false /*includeBoundary*/, true /*traverseTopToBottom*/); if (candidate != null) { parent = candidate; foundParentInTask = true; } } // TODO: There is a dup. of this block of code in ActivityTaskManagerService.finishActivity // We should consolidate. IActivityController controller = mAtmService.mController; if (controller != null) { ActivityRecord next = topRunningActivity(srec.appToken, INVALID_TASK_ID); if (next != null) { // ask watcher if this is allowed boolean resumeOK = true; try { resumeOK = controller.activityResuming(next.packageName); } catch (RemoteException e) { mAtmService.mController = null; Watchdog.getInstance().setActivityController(null); } if (!resumeOK) { return false; } } } final long origId = Binder.clearCallingIdentity(); final int[] resultCodeHolder = new int[1]; resultCodeHolder[0] = resultCode; final Intent[] resultDataHolder = new Intent[1]; resultDataHolder[0] = resultData; final NeededUriGrants[] resultGrantsHolder = new NeededUriGrants[1]; resultGrantsHolder[0] = resultGrants; final ActivityRecord finalParent = parent; task.forAllActivities((ar) -> { if (ar == finalParent) return true; ar.finishIfPossible(resultCodeHolder[0], resultDataHolder[0], resultGrantsHolder[0], "navigate-up", true /* oomAdj */); // Only return the supplied result for the first activity finished resultCodeHolder[0] = Activity.RESULT_CANCELED; resultDataHolder[0] = null; return false; }, srec, true, true); resultCode = resultCodeHolder[0]; resultData = resultDataHolder[0]; if (parent != null && foundParentInTask) { final int callingUid = srec.info.applicationInfo.uid; final int parentLaunchMode = parent.info.launchMode; final int destIntentFlags = destIntent.getFlags(); if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { parent.deliverNewIntentLocked(callingUid, destIntent, destGrants, srec.packageName); } else { try { ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( destIntent.getComponent(), ActivityManagerService.STOCK_PM_FLAGS, srec.mUserId); // TODO(b/64750076): Check if calling pid should really be -1. final int res = mAtmService.getActivityStartController() .obtainStarter(destIntent, "navigateUpTo") .setCaller(srec.app.getThread()) .setActivityInfo(aInfo) .setResultTo(parent.appToken) .setCallingPid(-1) .setCallingUid(callingUid) .setCallingPackage(srec.packageName) .setCallingFeatureId(parent.launchedFromFeatureId) .setRealCallingPid(-1) .setRealCallingUid(callingUid) .setComponentSpecified(true) .execute(); foundParentInTask = res == ActivityManager.START_SUCCESS; } catch (RemoteException e) { foundParentInTask = false; } parent.finishIfPossible(resultCode, resultData, resultGrants, "navigate-top", true /* oomAdj */); } } Binder.restoreCallingIdentity(origId); return foundParentInTask; } void removeLaunchTickMessages() { forAllActivities(ActivityRecord::removeLaunchTickRunnable); } private void updateTransitLocked(int transit, ActivityOptions options, boolean forceOverride) { if (options != null) { ActivityRecord r = topRunningActivity(); if (r != null && !r.isState(RESUMED)) { r.updateOptionsLocked(options); } else { ActivityOptions.abort(options); } } getDisplay().mDisplayContent.prepareAppTransition(transit, false, 0 /* flags */, forceOverride); } final void moveTaskToFront(Task tr, boolean noAnimation, ActivityOptions options, AppTimeTracker timeTracker, String reason) { moveTaskToFront(tr, noAnimation, options, timeTracker, !DEFER_RESUME, reason); } final void moveTaskToFront(Task tr, boolean noAnimation, ActivityOptions options, AppTimeTracker timeTracker, boolean deferResume, String reason) { if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "moveTaskToFront: " + tr); final ActivityStack topStack = getDisplayArea().getTopStack(); final ActivityRecord topActivity = topStack != null ? topStack.getTopNonFinishingActivity() : null; if (tr != this && !tr.isDescendantOf(this)) { // nothing to do! if (noAnimation) { ActivityOptions.abort(options); } else if (isSingleTaskInstance()) { // When a task is moved front on the display which can only contain one task, start // a special transition. // {@link AppTransitionController#handleAppTransitionReady} later picks up the // transition, and schedules // {@link ITaskStackListener#onSingleTaskDisplayDrawn} callback which is triggered // after contents are drawn on the display. updateTransitLocked(TRANSIT_SHOW_SINGLE_TASK_DISPLAY, options, true /* forceOverride */); } else { updateTransitLocked(TRANSIT_TASK_TO_FRONT, options, false /* forceOverride */); } return; } if (timeTracker != null) { // The caller wants a time tracker associated with this task. final PooledConsumer c = PooledLambda.obtainConsumer(ActivityRecord::setAppTimeTracker, PooledLambda.__(ActivityRecord.class), timeTracker); tr.forAllActivities(c); c.recycle(); } try { // Defer updating the IME target since the new IME target will try to get computed // before updating all closing and opening apps, which can cause the ime target to // get calculated incorrectly. getDisplay().deferUpdateImeTarget(); // Shift all activities with this task up to the top // of the stack, keeping them in the same internal order. positionChildAtTop(tr); // Don't refocus if invisible to current user final ActivityRecord top = tr.getTopNonFinishingActivity(); if (top == null || !top.okToShowLocked()) { if (top != null) { mStackSupervisor.mRecentTasks.add(top.getTask()); } ActivityOptions.abort(options); return; } // Set focus to the top running activity of this stack. final ActivityRecord r = topRunningActivity(); if (r != null) { r.moveFocusableActivityToTop(reason); } if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare to front transition: task=" + tr); if (noAnimation) { getDisplay().mDisplayContent.prepareAppTransition(TRANSIT_NONE, false); if (r != null) { mStackSupervisor.mNoAnimActivities.add(r); } ActivityOptions.abort(options); } else if (isSingleTaskInstance()) { updateTransitLocked(TRANSIT_SHOW_SINGLE_TASK_DISPLAY, options, true /* forceOverride */); } else { updateTransitLocked(TRANSIT_TASK_TO_FRONT, options, false /* forceOverride */); } // If a new task is moved to the front, then mark the existing top activity as // supporting // picture-in-picture while paused only if the task would not be considered an oerlay // on top // of the current activity (eg. not fullscreen, or the assistant) if (canEnterPipOnTaskSwitch(topActivity, tr, null /* toFrontActivity */, options)) { topActivity.supportsEnterPipOnTaskSwitch = true; } if (!deferResume) { mRootWindowContainer.resumeFocusedStacksTopActivities(); } EventLogTags.writeWmTaskToFront(tr.mUserId, tr.mTaskId); mAtmService.getTaskChangeNotificationController() .notifyTaskMovedToFront(tr.getTaskInfo()); } finally { getDisplay().continueUpdateImeTarget(); } } /** * Worker method for rearranging history stack. Implements the function of moving all * activities for a specific task (gathering them if disjoint) into a single group at the * bottom of the stack. * * If a watcher is installed, the action is preflighted and the watcher has an opportunity * to premeptively cancel the move. * * @param tr The task to collect and move to the bottom. * @return Returns true if the move completed, false if not. */ boolean moveTaskToBack(Task tr) { Slog.i(TAG, "moveTaskToBack: " + tr); // In LockTask mode, moving a locked task to the back of the stack may expose unlocked // ones. Therefore we need to check if this operation is allowed. if (!mAtmService.getLockTaskController().canMoveTaskToBack(tr)) { return false; } // If we have a watcher, preflight the move before committing to it. First check // for *other* available tasks, but if none are available, then try again allowing the // current task to be selected. if (isTopStackInDisplayArea() && mAtmService.mController != null) { ActivityRecord next = topRunningActivity(null, tr.mTaskId); if (next == null) { next = topRunningActivity(null, INVALID_TASK_ID); } if (next != null) { // ask watcher if this is allowed boolean moveOK = true; try { moveOK = mAtmService.mController.activityResuming(next.packageName); } catch (RemoteException e) { mAtmService.mController = null; Watchdog.getInstance().setActivityController(null); } if (!moveOK) { return false; } } } if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare to back transition: task=" + tr.mTaskId); getDisplay().mDisplayContent.prepareAppTransition(TRANSIT_TASK_TO_BACK, false); moveToBack("moveTaskToBackLocked", tr); if (inPinnedWindowingMode()) { mStackSupervisor.removeStack(this); return true; } ActivityRecord topActivity = getDisplayArea().topRunningActivity(); ActivityStack topStack = topActivity.getRootTask(); if (topStack != null && topStack != this && topActivity.isState(RESUMED)) { // The new top activity is already resumed, so there's a good chance that nothing will // get resumed below. So, update visibility now in case the transition is closed // prematurely. mRootWindowContainer.ensureVisibilityAndConfig(null /* starting */, getDisplay().mDisplayId, false /* markFrozenIfConfigChanged */, false /* deferResume */); // Usually resuming a top activity triggers the next app transition, but nothing's got // resumed in this case, so we need to execute it explicitly. getDisplay().mDisplayContent.executeAppTransition(); } else { mRootWindowContainer.resumeFocusedStacksTopActivities(); } return true; } /** * Ensures all visible activities at or below the input activity have the right configuration. */ void ensureVisibleActivitiesConfiguration(ActivityRecord start, boolean preserveWindow) { mEnsureVisibleActivitiesConfigHelper.process(start, preserveWindow); } // TODO: Can only be called from special methods in ActivityStackSupervisor. // Need to consolidate those calls points into this resize method so anyone can call directly. void resize(Rect displayedBounds, boolean preserveWindows, boolean deferResume) { Trace.traceBegin(TRACE_TAG_WINDOW_MANAGER, "stack.resize_" + getRootTaskId()); mAtmService.deferWindowLayout(); try { // TODO: Why not just set this on the stack directly vs. on each tasks? // Update override configurations of all tasks in the stack. final PooledConsumer c = PooledLambda.obtainConsumer( ActivityStack::processTaskResizeBounds, PooledLambda.__(Task.class), displayedBounds); forAllTasks(c, true /* traverseTopToBottom */); c.recycle(); if (mBoundsAnimating) { // Force to update task surface bounds and relayout windows, since configBounds // remains unchanged during bounds animation. updateSurfaceBounds(); getDisplay().setLayoutNeeded(); mWmService.requestTraversal(); } if (!deferResume) { ensureVisibleActivitiesConfiguration(topRunningActivity(), preserveWindows); } } finally { mAtmService.continueWindowLayout(); Trace.traceEnd(TRACE_TAG_WINDOW_MANAGER); } } private static void processTaskResizeBounds(Task task, Rect displayedBounds) { if (!task.isResizeable()) return; task.setBounds(displayedBounds); } /** * Until we can break this "set task bounds to same as stack bounds" behavior, this * basically resizes both stack and task bounds to the same bounds. */ private void setTaskBounds(Rect bounds) { final PooledConsumer c = PooledLambda.obtainConsumer(ActivityStack::setTaskBounds, PooledLambda.__(Task.class), bounds); forAllLeafTasks(c, true /* traverseTopToBottom */); c.recycle(); } private static void setTaskBounds(Task task, Rect bounds) { task.setBounds(task.isResizeable() ? bounds : null); } /** * Returns the top-most activity that occludes the given one, or @{code null} if none. */ @Nullable private ActivityRecord getOccludingActivityAbove(ActivityRecord activity) { ActivityRecord top = getActivity((ar) -> ar.occludesParent(), true /* traverseTopToBottom */, activity); return top != activity ? top : null; } boolean willActivityBeVisible(IBinder token) { final ActivityRecord r = ActivityRecord.forTokenLocked(token); if (r == null) { return false; } // See if there is an occluding activity on-top of this one. final ActivityRecord occludingActivity = getOccludingActivityAbove(r); if (occludingActivity != null) return false; if (r.finishing) Slog.e(TAG, "willActivityBeVisible: Returning false," + " would have returned true for r=" + r); return !r.finishing; } void unhandledBackLocked() { final ActivityRecord topActivity = getTopMostActivity(); if (DEBUG_SWITCH) Slog.d(TAG_SWITCH, "Performing unhandledBack(): top activity: " + topActivity); if (topActivity != null) { topActivity.finishIfPossible("unhandled-back", true /* oomAdj */); } } /** * Reset local parameters because an app's activity died. * @param app The app of the activity that died. * @return result from removeHistoryRecordsForAppLocked. */ boolean handleAppDied(WindowProcessController app) { if (mPausingActivity != null && mPausingActivity.app == app) { if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG_PAUSE, "App died while pausing: " + mPausingActivity); mPausingActivity = null; } if (mLastPausedActivity != null && mLastPausedActivity.app == app) { mLastPausedActivity = null; mLastNoHistoryActivity = null; } mStackSupervisor.removeHistoryRecords(app); return mRemoveHistoryRecordsForApp.process(app); } boolean dump(FileDescriptor fd, PrintWriter pw, boolean dumpAll, boolean dumpClient, String dumpPackage, final boolean needSep) { Runnable headerPrinter = () -> { if (needSep) { pw.println(); } pw.println(" Stack #" + getRootTaskId() + ": type=" + activityTypeToString(getActivityType()) + " mode=" + windowingModeToString(getWindowingMode())); pw.println(" isSleeping=" + shouldSleepActivities()); pw.println(" mBounds=" + getRequestedOverrideBounds()); }; boolean printed = false; if (dumpPackage == null) { // If we are not filtering by package, we want to print absolutely everything, // so always print the header even if there are no tasks/activities inside. headerPrinter.run(); headerPrinter = null; printed = true; } printed |= printThisActivity(pw, mPausingActivity, dumpPackage, false, " mPausingActivity: ", null); printed |= printThisActivity(pw, getResumedActivity(), dumpPackage, false, " mResumedActivity: ", null); if (dumpAll) { printed |= printThisActivity(pw, mLastPausedActivity, dumpPackage, false, " mLastPausedActivity: ", null); printed |= printThisActivity(pw, mLastNoHistoryActivity, dumpPackage, false, " mLastNoHistoryActivity: ", null); } printed |= dumpActivities(fd, pw, dumpAll, dumpClient, dumpPackage, false, headerPrinter); return printed; } private boolean dumpActivities(FileDescriptor fd, PrintWriter pw, boolean dumpAll, boolean dumpClient, String dumpPackage, boolean needSep, Runnable header) { if (!hasChild()) { return false; } final AtomicBoolean printedHeader = new AtomicBoolean(false); final AtomicBoolean printed = new AtomicBoolean(false); forAllLeafTasks((task) -> { final String prefix = " "; Runnable headerPrinter = () -> { printed.set(true); if (!printedHeader.get()) { if (needSep) { pw.println(""); } if (header != null) { header.run(); } printedHeader.set(true); } pw.print(prefix); pw.print("* "); pw.println(task); pw.print(prefix); pw.print(" mBounds="); pw.println(task.getRequestedOverrideBounds()); pw.print(prefix); pw.print(" mMinWidth="); pw.print(task.mMinWidth); pw.print(" mMinHeight="); pw.println(task.mMinHeight); if (mLastNonFullscreenBounds != null) { pw.print(prefix); pw.print(" mLastNonFullscreenBounds="); pw.println(task.mLastNonFullscreenBounds); } task.dump(pw, prefix + " "); }; if (dumpPackage == null) { // If we are not filtering by package, we want to print absolutely everything, // so always print the header even if there are no activities inside. headerPrinter.run(); headerPrinter = null; } final ArrayList activities = new ArrayList<>(); // Add activities by traversing the hierarchy from bottom to top, since activities // are dumped in reverse order in {@link ActivityStackSupervisor#dumpHistoryList()}. task.forAllActivities((Consumer) activities::add, false /* traverseTopToBottom */); dumpHistoryList(fd, pw, activities, prefix, "Hist", true, !dumpAll, dumpClient, dumpPackage, false, headerPrinter, task); }, true /* traverseTopToBottom */); return printed.get(); } ArrayList getDumpActivitiesLocked(String name) { ArrayList activities = new ArrayList<>(); if ("all".equals(name)) { forAllActivities((Consumer) activities::add); } else if ("top".equals(name)) { final ActivityRecord topActivity = getTopMostActivity(); if (topActivity != null) { activities.add(topActivity); } } else { ItemMatcher matcher = new ItemMatcher(); matcher.build(name); forAllActivities((r) -> { if (matcher.match(r, r.intent.getComponent())) { activities.add(r); } }); } return activities; } ActivityRecord restartPackage(String packageName) { ActivityRecord starting = topRunningActivity(); // All activities that came from the package must be // restarted as if there was a config change. PooledConsumer c = PooledLambda.obtainConsumer(ActivityStack::restartPackage, PooledLambda.__(ActivityRecord.class), starting, packageName); forAllActivities(c); c.recycle(); return starting; } private static void restartPackage( ActivityRecord r, ActivityRecord starting, String packageName) { if (r.info.packageName.equals(packageName)) { r.forceNewConfig = true; if (starting != null && r == starting && r.mVisibleRequested) { r.startFreezingScreenLocked(CONFIG_SCREEN_LAYOUT); } } } Task reuseOrCreateTask(ActivityInfo info, Intent intent, boolean toTop) { return reuseOrCreateTask(info, intent, null /*voiceSession*/, null /*voiceInteractor*/, toTop, null /*activity*/, null /*source*/, null /*options*/); } // TODO: Can be removed once we change callpoints creating stacks to be creating tasks. /** Either returns this current task to be re-used or creates a new child task. */ Task reuseOrCreateTask(ActivityInfo info, Intent intent, IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, boolean toTop, ActivityRecord activity, ActivityRecord source, ActivityOptions options) { Task task; if (DisplayContent.alwaysCreateStack(getWindowingMode(), getActivityType())) { // This stack will only contain one task, so just return itself since all stacks ara now // tasks and all tasks are now stacks. task = reuseAsLeafTask(voiceSession, voiceInteractor, intent, info, activity); } else { // Create child task since this stack can contain multiple tasks. final int taskId = activity != null ? mStackSupervisor.getNextTaskIdForUser(activity.mUserId) : mStackSupervisor.getNextTaskIdForUser(); task = new ActivityStack(mAtmService, taskId, info, intent, voiceSession, voiceInteractor, null /* taskDescription */, this); // add the task to stack first, mTaskPositioner might need the stack association addChild(task, toTop, (info.flags & FLAG_SHOW_FOR_ALL_USERS) != 0); } int displayId = getDisplayId(); if (displayId == INVALID_DISPLAY) displayId = DEFAULT_DISPLAY; final boolean isLockscreenShown = mAtmService.mStackSupervisor.getKeyguardController() .isKeyguardOrAodShowing(displayId); if (!mStackSupervisor.getLaunchParamsController() .layoutTask(task, info.windowLayout, activity, source, options) && !matchParentBounds() && task.isResizeable() && !isLockscreenShown) { task.setBounds(getRequestedOverrideBounds()); } return task; } void addChild(WindowContainer child, final boolean toTop, boolean showForAllUsers) { if (isSingleTaskInstance() && hasChild()) { throw new IllegalStateException("Can only have one child on stack=" + this); } Task task = child.asTask(); try { if (task != null) { task.setForceShowForAllUsers(showForAllUsers); } // We only want to move the parents to the parents if we are creating this task at the // top of its stack. addChild(child, toTop ? MAX_VALUE : 0, toTop /*moveParents*/); } finally { if (task != null) { task.setForceShowForAllUsers(false); } } } void positionChildAt(Task task, int position) { if (task.getStack() != this) { throw new IllegalArgumentException("AS.positionChildAt: task=" + task + " is not a child of stack=" + this + " current parent=" + task.getStack()); } task.updateOverrideConfigurationForStack(this); final ActivityRecord topRunningActivity = task.topRunningActivityLocked(); final boolean wasResumed = topRunningActivity == task.getStack().mResumedActivity; boolean toTop = position >= getChildCount(); boolean includingParents = toTop || getDisplayArea().getNextFocusableStack(this, true /* ignoreCurrent */) == null; if (WindowManagerDebugConfig.DEBUG_STACK) { Slog.i(TAG_WM, "positionChildAt: positioning task=" + task + " at " + position); } positionChildAt(position, task, includingParents); task.updateTaskMovement(toTop); getDisplayContent().layoutAndAssignWindowLayersIfNeeded(); // TODO: Investigate if this random code is really needed. if (task.voiceSession != null) { try { task.voiceSession.taskStarted(task.intent, task.mTaskId); } catch (RemoteException e) { } } if (wasResumed) { if (mResumedActivity != null) { Log.wtf(TAG, "mResumedActivity was already set when moving mResumedActivity from" + " other stack to this stack mResumedActivity=" + mResumedActivity + " other mResumedActivity=" + topRunningActivity); } topRunningActivity.setState(RESUMED, "positionChildAt"); } // The task might have already been running and its visibility needs to be synchronized with // the visibility of the stack / windows. ensureActivitiesVisible(null, 0, !PRESERVE_WINDOWS); mRootWindowContainer.resumeFocusedStacksTopActivities(); } public void setAlwaysOnTop(boolean alwaysOnTop) { if (isAlwaysOnTop() == alwaysOnTop) { return; } super.setAlwaysOnTop(alwaysOnTop); final TaskDisplayArea taskDisplayArea = getDisplayArea(); // positionChildAtTop() must be called even when always on top gets turned off because we // need to make sure that the stack is moved from among always on top windows to below other // always on top windows. Since the position the stack should be inserted into is calculated // properly in {@link DisplayContent#getTopInsertPosition()} in both cases, we can just // request that the stack is put at top here. taskDisplayArea.positionStackAtTop(this, false /* includingParents */); } /** NOTE: Should only be called from {@link Task#reparent}. */ void moveToFrontAndResumeStateIfNeeded(ActivityRecord r, boolean moveToFront, boolean setResume, boolean setPause, String reason) { if (!moveToFront) { return; } final ActivityState origState = r.getState(); // If the activity owns the last resumed activity, transfer that together, // so that we don't resume the same activity again in the new stack. // Apps may depend on onResume()/onPause() being called in pairs. if (setResume) { r.setState(RESUMED, "moveToFrontAndResumeStateIfNeeded"); } // If the activity was previously pausing, then ensure we transfer that as well if (setPause) { mPausingActivity = r; r.schedulePauseTimeout(); } // Move the stack in which we are placing the activity to the front. moveToFront(reason); // If the original state is resumed, there is no state change to update focused app. // So here makes sure the activity focus is set if it is the top. if (origState == RESUMED && r == mRootWindowContainer.getTopResumedActivity()) { mAtmService.setResumedActivityUncheckLocked(r, reason); } } void dismissPip() { if (!isActivityTypeStandardOrUndefined()) { throw new IllegalArgumentException( "You can't move tasks from non-standard stacks."); } if (getWindowingMode() != WINDOWING_MODE_PINNED) { throw new IllegalArgumentException( "Can't exit pinned mode if it's not pinned already."); } mWmService.inSurfaceTransaction(() -> { final Task task = getBottomMostTask(); setWindowingMode(WINDOWING_MODE_UNDEFINED); getDisplayArea().positionStackAtTop(this, false /* includingParents */); mStackSupervisor.scheduleUpdatePictureInPictureModeIfNeeded(task, this); MetricsLoggerWrapper.logPictureInPictureFullScreen(mAtmService.mContext, task.effectiveUid, task.realActivity.flattenToString()); }); } void prepareFreezingTaskBounds() { forAllLeafTasks(Task::prepareFreezingBounds, true /* traverseTopToBottom */); } @Override public int setBounds(Rect bounds) { // Calling Task#setBounds() for leaf task since this is the a specialization of // {@link #setBounds(int)} for ActivityStack. if (!isRootTask()) { return super.setBounds(bounds); } else { return setBounds(getRequestedOverrideBounds(), bounds); } } private int setBounds(Rect existing, Rect bounds) { if (equivalentBounds(existing, bounds)) { return BOUNDS_CHANGE_NONE; } final int result = super.setBounds(!inMultiWindowMode() ? null : bounds); updateSurfaceBounds(); return result; } /** Bounds of the stack without adjusting for other factors in the system like visibility * of docked stack. * Most callers should be using {@link ConfigurationContainer#getRequestedOverrideBounds} a * it takes into consideration other system factors. */ void getRawBounds(Rect out) { out.set(getRawBounds()); } private Rect getRawBounds() { return super.getBounds(); } @Override public void getBounds(Rect bounds) { bounds.set(getBounds()); } /** * @return the final bounds for the bounds animation. */ void getFinalAnimationBounds(Rect outBounds) { outBounds.set(mBoundsAnimationTarget); } /** * @return the final source bounds for the bounds animation. */ void getFinalAnimationSourceHintBounds(Rect outBounds) { outBounds.set(mBoundsAnimationSourceHintBounds); } /** Bounds of the stack with other system factors taken into consideration. */ void getDimBounds(Rect out) { getBounds(out); } /** * Put a Task in this stack. Used for adding only. * When task is added to top of the stack, the entire branch of the hierarchy (including stack * and display) will be brought to top. * @param child The child to add. * @param position Target position to add the task to. */ private void addChild(WindowContainer child, int position, boolean moveParents) { // Add child task. addChild(child, null); // Move child to a proper position, as some restriction for position might apply. positionChildAt(position, child, moveParents /* includingParents */); } void positionChildAtTop(Task child) { if (child == null) { // TODO: Fix the call-points that cause this to happen. return; } if (child == this) { // TODO: Fix call-points moveToFront("positionChildAtTop"); return; } positionChildAt(POSITION_TOP, child, true /* includingParents */); child.updateTaskMovement(true); final DisplayContent displayContent = getDisplayContent(); displayContent.layoutAndAssignWindowLayersIfNeeded(); } void positionChildAtBottom(Task child) { // If there are other focusable stacks on the display, the z-order of the display should not // be changed just because a task was placed at the bottom. E.g. if it is moving the topmost // task to bottom, the next focusable stack on the same display should be focused. final ActivityStack nextFocusableStack = getDisplayArea().getNextFocusableStack( child.getStack(), true /* ignoreCurrent */); positionChildAtBottom(child, nextFocusableStack == null /* includingParents */); child.updateTaskMovement(true); } @VisibleForTesting void positionChildAtBottom(Task child, boolean includingParents) { if (child == null) { // TODO: Fix the call-points that cause this to happen. return; } positionChildAt(POSITION_BOTTOM, child, includingParents); getDisplayContent().layoutAndAssignWindowLayersIfNeeded(); } @Override void onChildPositionChanged(WindowContainer child) { if (isOrganized()) { mAtmService.mTaskOrganizerController.dispatchTaskInfoChanged(this, false /* force */); } if (!mChildren.contains(child)) { return; } final boolean isTop = getTopChild() == child; final Task task = child.asTask(); if (task != null) { task.updateTaskMovement(isTop); } if (isTop) { final DisplayContent displayContent = getDisplayContent(); displayContent.layoutAndAssignWindowLayersIfNeeded(); } } @Override void onParentChanged(ConfigurationContainer newParent, ConfigurationContainer oldParent) { final DisplayContent display = newParent != null ? ((WindowContainer) newParent).getDisplayContent() : null; final DisplayContent oldDisplay = oldParent != null ? ((WindowContainer) oldParent).getDisplayContent() : null; super.onParentChanged(newParent, oldParent); // Resume next focusable stack after reparenting to another display if we aren't removing // the prevous display. if (oldDisplay != null && oldDisplay.isRemoving()) { postReparent(); } } void reparent(TaskDisplayArea newParent, boolean onTop) { reparent(newParent, onTop ? POSITION_TOP : POSITION_BOTTOM); } private void updateSurfaceBounds() { updateSurfaceSize(getSyncTransaction()); updateSurfacePosition(); scheduleAnimation(); } @Override void getRelativePosition(Point outPos) { super.getRelativePosition(outPos); final int outset = getTaskOutset(); outPos.x -= outset; outPos.y -= outset; } @Override void onDisplayChanged(DisplayContent dc) { super.onDisplayChanged(dc); if (isRootTask()) { updateSurfaceBounds(); } } boolean shouldIgnoreInput() { if (inSplitScreenPrimaryWindowingMode() && !isFocusable()) { return true; } if (mAtmService.mHasLeanbackFeature && inPinnedWindowingMode() && !isFocusedStackOnDisplay()) { // Preventing Picture-in-Picture stack from receiving input on TVs. return true; } return false; } @Override void dump(PrintWriter pw, String prefix, boolean dumpAll) { super.dump(pw, prefix, dumpAll); if (!mExitingActivities.isEmpty()) { pw.println(); pw.println(prefix + "Exiting application tokens:"); final String doublePrefix = prefix + " "; for (int i = mExitingActivities.size() - 1; i >= 0; i--) { WindowToken token = mExitingActivities.get(i); pw.print(doublePrefix + "Exiting App #" + i); pw.print(' '); pw.print(token); pw.println(':'); token.dump(pw, doublePrefix, dumpAll); } pw.println(); } mAnimatingActivityRegistry.dump(pw, "AnimatingApps:", prefix); } /** * Sets the current picture-in-picture aspect ratio. */ void setPictureInPictureAspectRatio(float aspectRatio) { if (!mWmService.mAtmService.mSupportsPictureInPicture) { return; } final DisplayContent displayContent = getDisplayContent(); if (displayContent == null) { return; } if (!inPinnedWindowingMode()) { return; } final PinnedStackController pinnedStackController = getDisplayContent().getPinnedStackController(); if (Float.compare(aspectRatio, pinnedStackController.getAspectRatio()) == 0) { return; } // Notify the pinned stack controller about aspect ratio change. // This would result a callback delivered from SystemUI to WM to start animation, // if the bounds are ought to be altered due to aspect ratio change. pinnedStackController.setAspectRatio( pinnedStackController.isValidPictureInPictureAspectRatio(aspectRatio) ? aspectRatio : -1f); } /** * Sets the current picture-in-picture actions. */ void setPictureInPictureActions(List actions) { if (!mWmService.mAtmService.mSupportsPictureInPicture) { return; } if (!inPinnedWindowingMode()) { return; } getDisplayContent().getPinnedStackController().setActions(actions); } public boolean isForceScaled() { return mBoundsAnimating; } /** Returns true if a removal action is still being deferred. */ boolean handleCompleteDeferredRemoval() { if (isAnimating(TRANSITION | CHILDREN)) { return true; } return super.handleCompleteDeferredRemoval(); } public DisplayInfo getDisplayInfo() { return mDisplayContent.getDisplayInfo(); } AnimatingActivityRegistry getAnimatingActivityRegistry() { return mAnimatingActivityRegistry; } void executeAppTransition(ActivityOptions options) { getDisplay().mDisplayContent.executeAppTransition(); ActivityOptions.abort(options); } boolean shouldSleepActivities() { final DisplayContent display = getDisplay(); // Do not sleep activities in this stack if we're marked as focused and the keyguard // is in the process of going away. if (isFocusedStackOnDisplay() && mStackSupervisor.getKeyguardController().isKeyguardGoingAway()) { return false; } return display != null ? display.isSleeping() : mAtmService.isSleepingLocked(); } boolean shouldSleepOrShutDownActivities() { return shouldSleepActivities() || mAtmService.mShuttingDown; } @Override public void dumpDebug(ProtoOutputStream proto, long fieldId, @WindowTraceLogLevel int logLevel) { if (logLevel == WindowTraceLogLevel.CRITICAL && !isVisible()) { return; } final long token = proto.start(fieldId); super.dumpDebug(proto, WINDOW_CONTAINER, logLevel); proto.write(TaskProto.ID, mTaskId); proto.write(DISPLAY_ID, getDisplayId()); proto.write(ROOT_TASK_ID, getRootTaskId()); if (mResumedActivity != null) { mResumedActivity.writeIdentifierToProto(proto, RESUMED_ACTIVITY); } if (realActivity != null) { proto.write(REAL_ACTIVITY, realActivity.flattenToShortString()); } if (origActivity != null) { proto.write(ORIG_ACTIVITY, origActivity.flattenToShortString()); } proto.write(ACTIVITY_TYPE, getActivityType()); proto.write(RESIZE_MODE, mResizeMode); proto.write(MIN_WIDTH, mMinWidth); proto.write(MIN_HEIGHT, mMinHeight); proto.write(FILLS_PARENT, matchParentBounds()); getRawBounds().dumpDebug(proto, BOUNDS); if (mLastNonFullscreenBounds != null) { mLastNonFullscreenBounds.dumpDebug(proto, LAST_NON_FULLSCREEN_BOUNDS); } proto.write(ANIMATING_BOUNDS, mBoundsAnimating); if (mSurfaceControl != null) { proto.write(SURFACE_WIDTH, mSurfaceControl.getWidth()); proto.write(SURFACE_HEIGHT, mSurfaceControl.getHeight()); } proto.write(CREATED_BY_ORGANIZER, mCreatedByOrganizer); proto.end(token); } }