2 * Copyright (C) 2010 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.android.server.am;
19 import static com.android.server.am.ActivityManagerService.TAG;
20 import static com.android.server.am.ActivityManagerService.localLOGV;
21 import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP;
22 import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION;
23 import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE;
24 import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS;
25 import static com.android.server.am.ActivityManagerService.DEBUG_STACK;
26 import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH;
27 import static com.android.server.am.ActivityManagerService.DEBUG_TASKS;
28 import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION;
29 import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING;
30 import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY;
31 import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS;
33 import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE;
34 import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE;
36 import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE;
37 import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP;
38 import static com.android.server.am.ActivityStackSupervisor.DEBUG_CONTAINERS;
39 import static com.android.server.am.ActivityStackSupervisor.DEBUG_RELEASE;
40 import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE;
41 import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS;
42 import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES;
43 import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID;
45 import android.util.ArraySet;
46 import com.android.internal.app.IVoiceInteractor;
47 import com.android.internal.content.ReferrerIntent;
48 import com.android.internal.os.BatteryStatsImpl;
49 import com.android.server.Watchdog;
50 import com.android.server.am.ActivityManagerService.ItemMatcher;
51 import com.android.server.am.ActivityStackSupervisor.ActivityContainer;
52 import com.android.server.wm.AppTransition;
53 import com.android.server.wm.TaskGroup;
54 import com.android.server.wm.WindowManagerService;
56 import android.app.Activity;
57 import android.app.ActivityManager;
58 import android.app.ActivityOptions;
59 import android.app.AppGlobals;
60 import android.app.IActivityController;
61 import android.app.ResultInfo;
62 import android.app.ActivityManager.RunningTaskInfo;
63 import android.content.ComponentName;
64 import android.content.Intent;
65 import android.content.pm.ActivityInfo;
66 import android.content.pm.PackageManager;
67 import android.content.res.Configuration;
68 import android.graphics.Bitmap;
69 import android.net.Uri;
70 import android.os.Binder;
71 import android.os.Bundle;
72 import android.os.Debug;
73 import android.os.Handler;
74 import android.os.IBinder;
75 import android.os.Looper;
76 import android.os.Message;
77 import android.os.PersistableBundle;
78 import android.os.RemoteException;
79 import android.os.SystemClock;
80 import android.os.Trace;
81 import android.os.UserHandle;
82 import android.service.voice.IVoiceInteractionSession;
83 import android.util.EventLog;
84 import android.util.Slog;
85 import android.view.Display;
87 import java.io.FileDescriptor;
88 import java.io.PrintWriter;
89 import java.lang.ref.WeakReference;
90 import java.util.ArrayList;
91 import java.util.Iterator;
92 import java.util.List;
93 import java.util.Objects;
96 * State and management of a single stack of activities.
98 final class ActivityStack {
100 // Ticks during which we check progress while waiting for an app to launch.
101 static final int LAUNCH_TICK = 500;
103 // How long we wait until giving up on the last activity to pause. This
104 // is short because it directly impacts the responsiveness of starting the
106 static final int PAUSE_TIMEOUT = 500;
108 // How long we wait for the activity to tell us it has stopped before
109 // giving up. This is a good amount of time because we really need this
110 // from the application in order to get its saved state.
111 static final int STOP_TIMEOUT = 10*1000;
113 // How long we wait until giving up on an activity telling us it has
114 // finished destroying itself.
115 static final int DESTROY_TIMEOUT = 10*1000;
117 // How long until we reset a task when the user returns to it. Currently
119 static final long ACTIVITY_INACTIVE_RESET_TIME = 0;
121 // How long between activity launches that we consider safe to not warn
122 // the user about an unexpected activity being launched on top.
123 static final long START_WARN_TIME = 5*1000;
125 // Set to false to disable the preview that is shown while a new activity
127 static final boolean SHOW_APP_STARTING_PREVIEW = true;
129 // How long to wait for all background Activities to redraw following a call to
130 // convertToTranslucent().
131 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000;
133 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic();
147 final ActivityManagerService mService;
148 final WindowManagerService mWindowManager;
151 * The back history of all previous (and possibly still
152 * running) activities. It contains #TaskRecord objects.
154 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>();
157 * Used for validating app tokens with window manager.
159 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>();
162 * List of running activities, sorted by recent usage.
163 * The first entry in the list is the least recently used.
164 * It contains HistoryRecord objects.
166 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>();
169 * Animations that for the current transition have requested not to
170 * be considered for the transition animation.
172 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>();
175 * When we are in the process of pausing an activity, before starting the
176 * next one, this variable holds the activity that is currently being paused.
178 ActivityRecord mPausingActivity = null;
181 * This is the last activity that we put into the paused state. This is
182 * used to determine if we need to do an activity transition while sleeping,
183 * when we normally hold the top activity paused.
185 ActivityRecord mLastPausedActivity = null;
188 * Activities that specify No History must be removed once the user navigates away from them.
189 * If the device goes to sleep with such an activity in the paused state then we save it here
190 * and finish it later if another activity replaces it on wakeup.
192 ActivityRecord mLastNoHistoryActivity = null;
195 * Current activity that is resumed, or null if there is none.
197 ActivityRecord mResumedActivity = null;
200 * This is the last activity that has been started. It is only used to
201 * identify when multiple activities are started at once so that the user
202 * can be warned they may not be in the activity they think they are.
204 ActivityRecord mLastStartedActivity = null;
206 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are
207 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they
208 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the
209 // Activity in mTranslucentActivityWaiting is notified via
210 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last
211 // background activity being drawn then the same call will be made with a true value.
212 ActivityRecord mTranslucentActivityWaiting = null;
213 private ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent =
214 new ArrayList<ActivityRecord>();
217 * Set when we know we are going to be calling updateConfiguration()
218 * soon, so want to skip intermediate config checks.
220 boolean mConfigWillChange;
222 long mLaunchStartTime = 0;
223 long mFullyDrawnStartTime = 0;
228 final ActivityContainer mActivityContainer;
229 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */
230 ArrayList<ActivityStack> mStacks;
231 /** The attached Display's unique identifier, or -1 if detached */
234 /** Run all ActivityStacks through this */
235 final ActivityStackSupervisor mStackSupervisor;
237 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1;
238 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2;
239 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3;
240 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4;
241 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5;
242 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6;
243 static final int RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG =
244 ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 7;
246 static class ScheduleDestroyArgs {
247 final ProcessRecord mOwner;
248 final String mReason;
249 ScheduleDestroyArgs(ProcessRecord owner, String reason) {
255 final Handler mHandler;
257 final class ActivityStackHandler extends Handler {
259 // if (localLOGV) Slog.v(TAG, "Handler started!");
261 ActivityStackHandler(Looper looper) {
266 public void handleMessage(Message msg) {
268 case PAUSE_TIMEOUT_MSG: {
269 ActivityRecord r = (ActivityRecord)msg.obj;
270 // We don't at this point know if the activity is fullscreen,
271 // so we need to be conservative and assume it isn't.
272 Slog.w(TAG, "Activity pause timeout for " + r);
273 synchronized (mService) {
275 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r);
277 activityPausedLocked(r.appToken, true);
280 case LAUNCH_TICK_MSG: {
281 ActivityRecord r = (ActivityRecord)msg.obj;
282 synchronized (mService) {
283 if (r.continueLaunchTickingLocked()) {
284 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r);
288 case DESTROY_TIMEOUT_MSG: {
289 ActivityRecord r = (ActivityRecord)msg.obj;
290 // We don't at this point know if the activity is fullscreen,
291 // so we need to be conservative and assume it isn't.
292 Slog.w(TAG, "Activity destroy timeout for " + r);
293 synchronized (mService) {
294 activityDestroyedLocked(r != null ? r.appToken : null);
297 case STOP_TIMEOUT_MSG: {
298 ActivityRecord r = (ActivityRecord)msg.obj;
299 // We don't at this point know if the activity is fullscreen,
300 // so we need to be conservative and assume it isn't.
301 Slog.w(TAG, "Activity stop timeout for " + r);
302 synchronized (mService) {
303 if (r.isInHistory()) {
304 activityStoppedLocked(r, null, null, null);
308 case DESTROY_ACTIVITIES_MSG: {
309 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj;
310 synchronized (mService) {
311 destroyActivitiesLocked(args.mOwner, args.mReason);
314 case TRANSLUCENT_TIMEOUT_MSG: {
315 synchronized (mService) {
316 notifyActivityDrawnLocked(null);
319 case RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG: {
320 synchronized (mService) {
321 final ActivityRecord r = getVisibleBehindActivity();
322 Slog.e(TAG, "Timeout waiting for cancelVisibleBehind player=" + r);
324 mService.killAppAtUsersRequest(r.app, null);
332 int numActivities() {
334 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
335 count += mTaskHistory.get(taskNdx).mActivities.size();
340 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) {
341 mActivityContainer = activityContainer;
342 mStackSupervisor = activityContainer.getOuter();
343 mService = mStackSupervisor.mService;
344 mHandler = new ActivityStackHandler(mService.mHandler.getLooper());
345 mWindowManager = mService.mWindowManager;
346 mStackId = activityContainer.mStackId;
347 mCurrentUser = mService.mCurrentUserId;
351 * Checks whether the userid is a profile of the current user.
353 private boolean isCurrentProfileLocked(int userId) {
354 if (userId == mCurrentUser) return true;
355 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) {
356 if (mService.mCurrentProfileIds[i] == userId) return true;
361 boolean okToShowLocked(ActivityRecord r) {
362 return isCurrentProfileLocked(r.userId)
363 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0;
366 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) {
367 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
368 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop);
376 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) {
377 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
378 final TaskRecord task = mTaskHistory.get(taskNdx);
379 final ArrayList<ActivityRecord> activities = task.mActivities;
380 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
381 ActivityRecord r = activities.get(activityNdx);
382 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) {
391 * This is a simplified version of topRunningActivityLocked that provides a number of
392 * optional skip-over modes. It is intended for use with the ActivityController hook only.
394 * @param token If non-null, any history records matching this token will be skipped.
395 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID.
397 * @return Returns the HistoryRecord of the next activity on the stack.
399 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) {
400 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
401 TaskRecord task = mTaskHistory.get(taskNdx);
402 if (task.taskId == taskId) {
405 ArrayList<ActivityRecord> activities = task.mActivities;
406 for (int i = activities.size() - 1; i >= 0; --i) {
407 final ActivityRecord r = activities.get(i);
408 // Note: the taskId check depends on real taskId fields being non-zero
409 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) {
417 final ActivityRecord topActivity() {
418 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
419 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
420 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
421 final ActivityRecord r = activities.get(activityNdx);
430 final TaskRecord topTask() {
431 final int size = mTaskHistory.size();
433 return mTaskHistory.get(size - 1);
438 TaskRecord taskForIdLocked(int id) {
439 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
440 final TaskRecord task = mTaskHistory.get(taskNdx);
441 if (task.taskId == id) {
448 ActivityRecord isInStackLocked(IBinder token) {
449 final ActivityRecord r = ActivityRecord.forToken(token);
451 final TaskRecord task = r.task;
452 if (task != null && task.mActivities.contains(r) && mTaskHistory.contains(task)) {
453 if (task.stack != this) Slog.w(TAG,
454 "Illegal state! task does not point to stack it is in.");
461 final boolean updateLRUListLocked(ActivityRecord r) {
462 final boolean hadit = mLRUActivities.remove(r);
463 mLRUActivities.add(r);
467 final boolean isHomeStack() {
468 return mStackId == HOME_STACK_ID;
471 final boolean isOnHomeDisplay() {
472 return isAttached() &&
473 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY;
476 final void moveToFront() {
478 if (isOnHomeDisplay()) {
479 mStackSupervisor.moveHomeStack(isHomeStack());
481 mStacks.remove(this);
483 final TaskRecord task = topTask();
485 mWindowManager.moveTaskToTop(task.taskId);
490 final boolean isAttached() {
491 return mStacks != null;
495 * Returns the top activity in any existing task matching the given
496 * Intent. Returns null if no such task is found.
498 ActivityRecord findTaskLocked(ActivityRecord target) {
499 Intent intent = target.intent;
500 ActivityInfo info = target.info;
501 ComponentName cls = intent.getComponent();
502 if (info.targetActivity != null) {
503 cls = new ComponentName(info.packageName, info.targetActivity);
505 final int userId = UserHandle.getUserId(info.applicationInfo.uid);
506 boolean isDocument = intent != null & intent.isDocument();
507 // If documentData is non-null then it must match the existing task data.
508 Uri documentData = isDocument ? intent.getData() : null;
510 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this);
511 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
512 final TaskRecord task = mTaskHistory.get(taskNdx);
513 if (task.voiceSession != null) {
514 // We never match voice sessions; those always run independently.
515 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session");
518 if (task.userId != userId) {
519 // Looking for a different task.
520 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user");
523 final ActivityRecord r = task.getTopActivity();
524 if (r == null || r.finishing || r.userId != userId ||
525 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) {
526 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r);
530 final Intent taskIntent = task.intent;
531 final Intent affinityIntent = task.affinityIntent;
532 final boolean taskIsDocument;
533 final Uri taskDocumentData;
534 if (taskIntent != null && taskIntent.isDocument()) {
535 taskIsDocument = true;
536 taskDocumentData = taskIntent.getData();
537 } else if (affinityIntent != null && affinityIntent.isDocument()) {
538 taskIsDocument = true;
539 taskDocumentData = affinityIntent.getData();
541 taskIsDocument = false;
542 taskDocumentData = null;
545 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls="
546 + taskIntent.getComponent().flattenToShortString()
547 + "/aff=" + r.task.rootAffinity + " to new cls="
548 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity);
549 if (!isDocument && !taskIsDocument && task.rootAffinity != null) {
550 if (task.rootAffinity.equals(target.taskAffinity)) {
551 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!");
554 } else if (taskIntent != null && taskIntent.getComponent() != null &&
555 taskIntent.getComponent().compareTo(cls) == 0 &&
556 Objects.equals(documentData, taskDocumentData)) {
557 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!");
559 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: "
562 } else if (affinityIntent != null && affinityIntent.getComponent() != null &&
563 affinityIntent.getComponent().compareTo(cls) == 0 &&
564 Objects.equals(documentData, taskDocumentData)) {
565 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!");
567 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: "
570 } else if (DEBUG_TASKS) {
571 Slog.d(TAG, "Not a match: " + task);
579 * Returns the first activity (starting from the top of the stack) that
580 * is the same as the given activity. Returns null if no such activity
583 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) {
584 ComponentName cls = intent.getComponent();
585 if (info.targetActivity != null) {
586 cls = new ComponentName(info.packageName, info.targetActivity);
588 final int userId = UserHandle.getUserId(info.applicationInfo.uid);
590 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
591 TaskRecord task = mTaskHistory.get(taskNdx);
592 if (!isCurrentProfileLocked(task.userId)) {
595 final ArrayList<ActivityRecord> activities = task.mActivities;
596 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
597 ActivityRecord r = activities.get(activityNdx);
598 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) {
599 //Slog.i(TAG, "Found matching class!");
601 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent);
611 * Move the activities around in the stack to bring a user to the foreground.
613 final void switchUserLocked(int userId) {
614 if (mCurrentUser == userId) {
617 mCurrentUser = userId;
619 // Move userId's tasks to the top.
620 int index = mTaskHistory.size();
621 for (int i = 0; i < index; ) {
622 TaskRecord task = mTaskHistory.get(i);
623 if (isCurrentProfileLocked(task.userId)) {
624 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() +
625 " moving " + task + " to top");
626 mTaskHistory.remove(i);
627 mTaskHistory.add(task);
629 // Use same value for i.
634 if (VALIDATE_TOKENS) {
635 validateAppTokensLocked();
639 void minimalResumeActivityLocked(ActivityRecord r) {
640 r.state = ActivityState.RESUMED;
641 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r
642 + " (starting new instance)");
644 mResumedActivity = r;
645 r.task.touchActiveTime();
646 mService.addRecentTaskLocked(r.task);
647 completeResumeLocked(r);
648 mStackSupervisor.checkReadyForSleepLocked();
650 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle);
653 private void startLaunchTraces() {
654 if (mFullyDrawnStartTime != 0) {
655 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0);
657 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0);
658 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0);
661 private void stopFullyDrawnTraceIfNeeded() {
662 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) {
663 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0);
664 mFullyDrawnStartTime = 0;
668 void setLaunchTime(ActivityRecord r) {
669 if (r.displayStartTime == 0) {
670 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis();
671 if (mLaunchStartTime == 0) {
673 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime;
675 } else if (mLaunchStartTime == 0) {
677 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis();
681 void clearLaunchTime(ActivityRecord r) {
682 // Make sure that there is no activity waiting for this to launch.
683 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) {
684 r.displayStartTime = r.fullyDrawnStartTime = 0;
686 mStackSupervisor.removeTimeoutsForActivityLocked(r);
687 mStackSupervisor.scheduleIdleTimeoutLocked(r);
691 void awakeFromSleepingLocked() {
692 // Ensure activities are no longer sleeping.
693 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
694 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
695 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
696 activities.get(activityNdx).setSleeping(false);
699 if (mPausingActivity != null) {
700 Slog.d(TAG, "awakeFromSleepingLocked: previously pausing activity didn't pause");
701 activityPausedLocked(mPausingActivity.appToken, true);
706 * @return true if something must be done before going to sleep.
708 boolean checkReadyForSleepLocked() {
709 if (mResumedActivity != null) {
710 // Still have something resumed; can't sleep until it is paused.
711 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity);
712 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false");
713 startPausingLocked(false, true, false, false);
716 if (mPausingActivity != null) {
717 // Still waiting for something to pause; can't sleep yet.
718 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity);
726 ensureActivitiesVisibleLocked(null, 0);
728 // Make sure any stopped but visible activities are now sleeping.
729 // This ensures that the activity's onStop() is called.
730 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
731 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
732 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
733 final ActivityRecord r = activities.get(activityNdx);
734 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) {
741 public final Bitmap screenshotActivities(ActivityRecord who) {
742 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who);
744 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display");
749 // This is an optimization -- since we never show Home or Recents within Recents itself,
750 // we can just go ahead and skip taking the screenshot if this is the home stack.
751 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tHome stack");
755 int w = mService.mThumbnailWidth;
756 int h = mService.mThumbnailHeight;
758 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tTaking screenshot");
759 return mWindowManager.screenshotApplications(who.appToken, Display.DEFAULT_DISPLAY,
760 w, h, SCREENSHOT_FORCE_565);
762 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h);
767 * Start pausing the currently resumed activity. It is an error to call this if there
768 * is already an activity being paused or there is no resumed activity.
770 * @param userLeaving True if this should result in an onUserLeaving to the current activity.
771 * @param uiSleeping True if this is happening with the user interface going to sleep (the
772 * screen turning off).
773 * @param resuming True if this is being called as part of resuming the top activity, so
774 * we shouldn't try to instigate a resume here.
775 * @param dontWait True if the caller does not want to wait for the pause to complete. If
776 * set to true, we will immediately complete the pause here before returning.
777 * @return Returns true if an activity now is in the PAUSING state, and we are waiting for
778 * it to tell us when it is done.
780 final boolean startPausingLocked(boolean userLeaving, boolean uiSleeping, boolean resuming,
782 if (mPausingActivity != null) {
783 Slog.wtf(TAG, "Going to pause when pause is already pending for " + mPausingActivity);
784 completePauseLocked(false);
786 ActivityRecord prev = mResumedActivity;
789 Slog.wtf(TAG, "Trying to pause when nothing is resumed");
790 mStackSupervisor.resumeTopActivitiesLocked();
795 if (mActivityContainer.mParentActivity == null) {
796 // Top level stack, not a child. Look for child stacks.
797 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping, resuming, dontWait);
800 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev);
801 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev);
802 mResumedActivity = null;
803 mPausingActivity = prev;
804 mLastPausedActivity = prev;
805 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0
806 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null;
807 prev.state = ActivityState.PAUSING;
808 prev.task.touchActiveTime();
809 clearLaunchTime(prev);
810 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked();
811 if (mService.mHasRecents && (next == null || next.noDisplay || next.task != prev.task || uiSleeping)) {
812 prev.updateThumbnailLocked(screenshotActivities(prev), null);
814 stopFullyDrawnTraceIfNeeded();
816 mService.updateCpuStats();
818 if (prev.app != null && prev.app.thread != null) {
819 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev);
821 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY,
822 prev.userId, System.identityHashCode(prev),
823 prev.shortComponentName);
824 mService.updateUsageStats(prev, false);
825 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing,
826 userLeaving, prev.configChangeFlags, dontWait);
827 } catch (Exception e) {
828 // Ignore exception, if process died other code will cleanup.
829 Slog.w(TAG, "Exception thrown during pause", e);
830 mPausingActivity = null;
831 mLastPausedActivity = null;
832 mLastNoHistoryActivity = null;
835 mPausingActivity = null;
836 mLastPausedActivity = null;
837 mLastNoHistoryActivity = null;
840 // If we are not going to sleep, we want to ensure the device is
841 // awake until the next activity is started.
842 if (!mService.isSleepingOrShuttingDown()) {
843 mStackSupervisor.acquireLaunchWakelock();
846 if (mPausingActivity != null) {
847 // Have the window manager pause its key dispatching until the new
848 // activity has started. If we're pausing the activity just because
849 // the screen is being turned off and the UI is sleeping, don't interrupt
850 // key dispatch; the same activity will pick it up again on wakeup.
852 prev.pauseKeyDispatchingLocked();
854 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off");
858 // If the caller said they don't want to wait for the pause, then complete
860 completePauseLocked(false);
864 // Schedule a pause timeout in case the app doesn't respond.
865 // We don't give it much time because this directly impacts the
866 // responsiveness seen by the user.
867 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG);
869 prev.pauseTime = SystemClock.uptimeMillis();
870 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT);
871 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete...");
876 // This activity failed to schedule the
877 // pause, so just treat it as being paused now.
878 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next.");
880 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null);
886 final void activityPausedLocked(IBinder token, boolean timeout) {
887 if (DEBUG_PAUSE) Slog.v(
888 TAG, "Activity paused: token=" + token + ", timeout=" + timeout);
890 final ActivityRecord r = isInStackLocked(token);
892 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r);
893 if (mPausingActivity == r) {
894 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r
895 + (timeout ? " (due to timeout)" : " (pause complete)"));
896 completePauseLocked(true);
898 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE,
899 r.userId, System.identityHashCode(r), r.shortComponentName,
900 mPausingActivity != null
901 ? mPausingActivity.shortComponentName : "(none)");
906 final void activityStoppedLocked(ActivityRecord r, Bundle icicle,
907 PersistableBundle persistentState, CharSequence description) {
908 if (r.state != ActivityState.STOPPING) {
909 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r);
910 mHandler.removeMessages(STOP_TIMEOUT_MSG, r);
913 if (persistentState != null) {
914 r.persistentState = persistentState;
915 mService.notifyTaskPersisterLocked(r.task, false);
917 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle);
918 if (icicle != null) {
919 // If icicle is null, this is happening due to a timeout, so we
920 // haven't really saved the state.
924 r.updateThumbnailLocked(null, description);
927 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)");
928 mHandler.removeMessages(STOP_TIMEOUT_MSG, r);
930 r.state = ActivityState.STOPPED;
931 if (mActivityContainer.mActivityDisplay.mVisibleBehindActivity == r) {
932 mStackSupervisor.requestVisibleBehindLocked(r, false);
935 r.clearOptionsLocked();
937 if (r.configDestroy) {
938 destroyActivityLocked(r, true, "stop-config");
939 mStackSupervisor.resumeTopActivitiesLocked();
941 mStackSupervisor.updatePreviousProcessLocked(r);
947 private void completePauseLocked(boolean resumeNext) {
948 ActivityRecord prev = mPausingActivity;
949 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev);
952 prev.state = ActivityState.PAUSED;
953 if (prev.finishing) {
954 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev);
955 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false);
956 } else if (prev.app != null) {
957 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev);
958 if (prev.waitingVisible) {
959 prev.waitingVisible = false;
960 mStackSupervisor.mWaitingVisibleActivities.remove(prev);
961 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v(
962 TAG, "Complete pause, no longer waiting: " + prev);
964 if (prev.configDestroy) {
965 // The previous is being paused because the configuration
966 // is changing, which means it is actually stopping...
967 // To juggle the fact that we are also starting a new
968 // instance right now, we need to first completely stop
969 // the current instance before starting the new one.
970 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev);
971 destroyActivityLocked(prev, true, "pause-config");
972 } else if (!hasVisibleBehindActivity()) {
973 // If we were visible then resumeTopActivities will release resources before
975 mStackSupervisor.mStoppingActivities.add(prev);
976 if (mStackSupervisor.mStoppingActivities.size() > 3 ||
977 prev.frontOfTask && mTaskHistory.size() <= 1) {
978 // If we already have a few activities waiting to stop,
979 // then give up on things going idle and start clearing
980 // them out. Or if r is the last of activity of the last task the stack
981 // will be empty and must be cleared immediately.
982 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle");
983 mStackSupervisor.scheduleIdleLocked();
985 mStackSupervisor.checkReadyForSleepLocked();
989 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev);
992 mPausingActivity = null;
996 final ActivityStack topStack = mStackSupervisor.getFocusedStack();
997 if (!mService.isSleepingOrShuttingDown()) {
998 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null);
1000 mStackSupervisor.checkReadyForSleepLocked();
1001 ActivityRecord top = topStack.topRunningActivityLocked(null);
1002 if (top == null || (prev != null && top != prev)) {
1003 // If there are no more activities available to run,
1004 // do resume anyway to start something. Also if the top
1005 // activity on the stack is not the just paused activity,
1006 // we need to go ahead and resume it to ensure we complete
1007 // an in-flight app switch.
1008 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null);
1014 prev.resumeKeyDispatchingLocked();
1016 if (prev.app != null && prev.cpuTimeAtResume > 0
1017 && mService.mBatteryStatsService.isOnBattery()) {
1018 long diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid)
1019 - prev.cpuTimeAtResume;
1021 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics();
1022 synchronized (bsi) {
1023 BatteryStatsImpl.Uid.Proc ps =
1024 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid,
1025 prev.info.packageName);
1027 ps.addForegroundTimeLocked(diff);
1032 prev.cpuTimeAtResume = 0; // reset it
1035 // Notfiy when the task stack has changed
1036 mService.notifyTaskStackChangedLocked();
1040 * Once we know that we have asked an application to put an activity in
1041 * the resumed state (either by launching it or explicitly telling it),
1042 * this function updates the rest of our state to match that fact.
1044 private void completeResumeLocked(ActivityRecord next) {
1046 next.results = null;
1047 next.newIntents = null;
1049 if (next.isHomeActivity() && next.isNotResolverActivity()) {
1050 ProcessRecord app = next.task.mActivities.get(0).app;
1051 if (app != null && app != mService.mHomeProcess) {
1052 mService.mHomeProcess = app;
1056 if (next.nowVisible) {
1057 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now.
1058 mStackSupervisor.notifyActivityDrawnForKeyguard();
1061 // schedule an idle timeout in case the app doesn't do it for us.
1062 mStackSupervisor.scheduleIdleTimeoutLocked(next);
1064 mStackSupervisor.reportResumedActivityLocked(next);
1066 next.resumeKeyDispatchingLocked();
1067 mNoAnimActivities.clear();
1069 // Mark the point when the activity is resuming
1070 // TODO: To be more accurate, the mark should be before the onCreate,
1071 // not after the onResume. But for subsequent starts, onResume is fine.
1072 if (next.app != null) {
1073 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid);
1075 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process
1078 next.returningOptions = null;
1080 if (mActivityContainer.mActivityDisplay.mVisibleBehindActivity == next) {
1081 // When resuming an activity, require it to call requestVisibleBehind() again.
1082 mActivityContainer.mActivityDisplay.setVisibleBehindActivity(null);
1086 private void setVisibile(ActivityRecord r, boolean visible) {
1087 r.visible = visible;
1088 mWindowManager.setAppVisibility(r.appToken, visible);
1089 final ArrayList<ActivityContainer> containers = r.mChildContainers;
1090 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) {
1091 ActivityContainer container = containers.get(containerNdx);
1092 container.setVisible(visible);
1096 // Find the first visible activity above the passed activity and if it is translucent return it
1097 // otherwise return null;
1098 ActivityRecord findNextTranslucentActivity(ActivityRecord r) {
1099 TaskRecord task = r.task;
1104 ActivityStack stack = task.stack;
1105 if (stack == null) {
1109 int stackNdx = mStacks.indexOf(stack);
1111 ArrayList<TaskRecord> tasks = stack.mTaskHistory;
1112 int taskNdx = tasks.indexOf(task);
1114 ArrayList<ActivityRecord> activities = task.mActivities;
1115 int activityNdx = activities.indexOf(r) + 1;
1117 final int numStacks = mStacks.size();
1118 while (stackNdx < numStacks) {
1119 tasks = mStacks.get(stackNdx).mTaskHistory;
1120 final int numTasks = tasks.size();
1121 while (taskNdx < numTasks) {
1122 activities = tasks.get(taskNdx).mActivities;
1123 final int numActivities = activities.size();
1124 while (activityNdx < numActivities) {
1125 final ActivityRecord activity = activities.get(activityNdx);
1126 if (!activity.finishing) {
1127 return activity.fullscreen ? null : activity;
1141 // Checks if any of the stacks above this one has a fullscreen activity behind it.
1142 // If so, this stack is hidden, otherwise it is visible.
1143 private boolean isStackVisible() {
1144 if (!isAttached()) {
1148 if (mStackSupervisor.isFrontStack(this)) {
1153 * Start at the task above this one and go up, looking for a visible
1154 * fullscreen activity, or a translucent activity that requested the
1155 * wallpaper to be shown behind it.
1157 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) {
1158 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks();
1159 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) {
1160 final TaskRecord task = tasks.get(taskNdx);
1161 final ArrayList<ActivityRecord> activities = task.mActivities;
1162 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) {
1163 final ActivityRecord r = activities.get(activityNdx);
1165 // Conditions for an activity to obscure the stack we're
1167 // 1. Not Finishing AND Visible AND:
1169 // - Full Screen Activity OR
1170 // - On top of Home and our stack is NOT home
1171 if (!r.finishing && r.visible && (r.fullscreen ||
1172 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) {
1183 * Make sure that all activities that need to be visible (that is, they
1184 * currently can be seen by the user) actually are.
1186 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) {
1187 ActivityRecord top = topRunningActivityLocked(null);
1191 if (DEBUG_VISBILITY) Slog.v(
1192 TAG, "ensureActivitiesVisible behind " + top
1193 + " configChanges=0x" + Integer.toHexString(configChanges));
1195 if (mTranslucentActivityWaiting != top) {
1196 mUndrawnActivitiesBelowTopTranslucent.clear();
1197 if (mTranslucentActivityWaiting != null) {
1198 // Call the callback with a timeout indication.
1199 notifyActivityDrawnLocked(null);
1200 mTranslucentActivityWaiting = null;
1202 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG);
1205 // If the top activity is not fullscreen, then we need to
1206 // make sure any activities under it are now visible.
1207 boolean aboveTop = true;
1208 boolean behindFullscreen = !isStackVisible();
1210 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
1211 final TaskRecord task = mTaskHistory.get(taskNdx);
1212 final ArrayList<ActivityRecord> activities = task.mActivities;
1213 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
1214 final ActivityRecord r = activities.get(activityNdx);
1218 if (aboveTop && r != top) {
1222 // mLaunchingBehind: Activities launching behind are at the back of the task stack
1223 // but must be drawn initially for the animation as though they were visible.
1224 if (!behindFullscreen || r.mLaunchTaskBehind) {
1225 if (DEBUG_VISBILITY) Slog.v(
1226 TAG, "Make visible? " + r + " finishing=" + r.finishing
1227 + " state=" + r.state);
1229 // First: if this is not the current activity being started, make
1230 // sure it matches the current configuration.
1231 if (r != starting) {
1232 ensureActivityConfigurationLocked(r, 0);
1235 if (r.app == null || r.app.thread == null) {
1236 // This activity needs to be visible, but isn't even
1237 // running... get it started, but don't resume it
1239 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r);
1240 if (r != starting) {
1241 r.startFreezingScreenLocked(r.app, configChanges);
1243 if (!r.visible || r.mLaunchTaskBehind) {
1244 if (DEBUG_VISBILITY) Slog.v(
1245 TAG, "Starting and making visible: " + r);
1246 setVisibile(r, true);
1248 if (r != starting) {
1249 mStackSupervisor.startSpecificActivityLocked(r, false, false);
1252 } else if (r.visible) {
1253 // If this activity is already visible, then there is nothing
1255 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r);
1256 r.stopFreezingScreenLocked(false);
1258 if (r.returningOptions != null) {
1259 r.app.thread.scheduleOnNewActivityOptions(r.appToken,
1260 r.returningOptions);
1262 } catch(RemoteException e) {
1265 // This activity is not currently visible, but is running.
1266 // Tell it to become visible.
1268 if (r.state != ActivityState.RESUMED && r != starting) {
1269 // If this activity is paused, tell it
1270 // to now show its window.
1271 if (DEBUG_VISBILITY) Slog.v(
1272 TAG, "Making visible and scheduling visibility: " + r);
1274 if (mTranslucentActivityWaiting != null) {
1275 r.updateOptionsLocked(r.returningOptions);
1276 mUndrawnActivitiesBelowTopTranslucent.add(r);
1278 setVisibile(r, true);
1280 r.app.pendingUiClean = true;
1281 r.app.thread.scheduleWindowVisibility(r.appToken, true);
1282 r.stopFreezingScreenLocked(false);
1283 } catch (Exception e) {
1284 // Just skip on any failure; we'll make it
1285 // visible when it next restarts.
1286 Slog.w(TAG, "Exception thrown making visibile: "
1287 + r.intent.getComponent(), e);
1292 // Aggregate current change flags.
1293 configChanges |= r.configChangeFlags;
1296 // At this point, nothing else needs to be shown
1297 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r);
1298 behindFullscreen = true;
1299 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) {
1300 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r);
1301 behindFullscreen = true;
1304 if (DEBUG_VISBILITY) Slog.v(
1305 TAG, "Make invisible? " + r + " finishing=" + r.finishing
1306 + " state=" + r.state
1307 + " behindFullscreen=" + behindFullscreen);
1308 // Now for any activities that aren't visible to the user, make
1309 // sure they no longer are keeping the screen frozen.
1311 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r);
1313 setVisibile(r, false);
1317 if (r.app != null && r.app.thread != null) {
1318 if (DEBUG_VISBILITY) Slog.v(
1319 TAG, "Scheduling invisibility: " + r);
1320 r.app.thread.scheduleWindowVisibility(r.appToken, false);
1328 // This case created for transitioning activities from
1329 // translucent to opaque {@link Activity#convertToOpaque}.
1330 if (getVisibleBehindActivity() == r) {
1331 releaseBackgroundResources();
1333 if (!mStackSupervisor.mStoppingActivities.contains(r)) {
1334 mStackSupervisor.mStoppingActivities.add(r);
1336 mStackSupervisor.scheduleIdleLocked();
1343 } catch (Exception e) {
1344 // Just skip on any failure; we'll make it
1345 // visible when it next restarts.
1346 Slog.w(TAG, "Exception thrown making hidden: "
1347 + r.intent.getComponent(), e);
1350 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r);
1356 if (mTranslucentActivityWaiting != null &&
1357 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) {
1358 // Nothing is getting drawn or everything was already visible, don't wait for timeout.
1359 notifyActivityDrawnLocked(null);
1363 void convertToTranslucent(ActivityRecord r) {
1364 mTranslucentActivityWaiting = r;
1365 mUndrawnActivitiesBelowTopTranslucent.clear();
1366 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT);
1370 * Called as activities below the top translucent activity are redrawn. When the last one is
1371 * redrawn notify the top activity by calling
1372 * {@link Activity#onTranslucentConversionComplete}.
1374 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout
1375 * occurred and the activity will be notified immediately.
1377 void notifyActivityDrawnLocked(ActivityRecord r) {
1378 mActivityContainer.setDrawn();
1380 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) &&
1381 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) {
1382 // The last undrawn activity below the top has just been drawn. If there is an
1383 // opaque activity at the top, notify it that it can become translucent safely now.
1384 final ActivityRecord waitingActivity = mTranslucentActivityWaiting;
1385 mTranslucentActivityWaiting = null;
1386 mUndrawnActivitiesBelowTopTranslucent.clear();
1387 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG);
1389 if (waitingActivity != null) {
1390 mWindowManager.setWindowOpaque(waitingActivity.appToken, false);
1391 if (waitingActivity.app != null && waitingActivity.app.thread != null) {
1393 waitingActivity.app.thread.scheduleTranslucentConversionComplete(
1394 waitingActivity.appToken, r != null);
1395 } catch (RemoteException e) {
1402 /** If any activities below the top running one are in the INITIALIZING state and they have a
1403 * starting window displayed then remove that starting window. It is possible that the activity
1404 * in this state will never resumed in which case that starting window will be orphaned. */
1405 void cancelInitializingActivities() {
1406 final ActivityRecord topActivity = topRunningActivityLocked(null);
1407 boolean aboveTop = true;
1408 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
1409 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
1410 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
1411 final ActivityRecord r = activities.get(activityNdx);
1413 if (r == topActivity) {
1419 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) {
1420 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r);
1421 r.mStartingWindowShown = false;
1422 mWindowManager.removeAppStartingWindow(r.appToken);
1429 * Ensure that the top activity in the stack is resumed.
1431 * @param prev The previously resumed activity, for when in the process
1432 * of pausing; can be null to call from elsewhere.
1434 * @return Returns true if something is being resumed, or false if
1437 final boolean resumeTopActivityLocked(ActivityRecord prev) {
1438 return resumeTopActivityLocked(prev, null);
1441 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) {
1442 if (mStackSupervisor.inResumeTopActivity) {
1443 // Don't even start recursing.
1447 boolean result = false;
1449 // Protect against recursion.
1450 mStackSupervisor.inResumeTopActivity = true;
1451 if (mService.mLockScreenShown == ActivityManagerService.LOCK_SCREEN_LEAVING) {
1452 mService.mLockScreenShown = ActivityManagerService.LOCK_SCREEN_HIDDEN;
1453 mService.updateSleepIfNeededLocked();
1455 result = resumeTopActivityInnerLocked(prev, options);
1457 mStackSupervisor.inResumeTopActivity = false;
1462 final boolean resumeTopActivityInnerLocked(ActivityRecord prev, Bundle options) {
1463 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen("");
1465 if (!mService.mBooting && !mService.mBooted) {
1470 ActivityRecord parent = mActivityContainer.mParentActivity;
1471 if ((parent != null && parent.state != ActivityState.RESUMED) ||
1472 !mActivityContainer.isAttachedLocked()) {
1473 // Do not resume this stack if its parent is not resumed.
1474 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st.
1478 cancelInitializingActivities();
1480 // Find the first activity that is not finishing.
1481 ActivityRecord next = topRunningActivityLocked(null);
1483 // Remember how we'll process this pause/resume situation, and ensure
1484 // that the state is reset however we wind up proceeding.
1485 final boolean userLeaving = mStackSupervisor.mUserLeaving;
1486 mStackSupervisor.mUserLeaving = false;
1488 final TaskRecord prevTask = prev != null ? prev.task : null;
1490 // There are no more activities! Let's just start up the
1492 ActivityOptions.abort(options);
1493 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home");
1494 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1495 // Only resume home if on home display
1496 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ?
1497 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo();
1498 return isOnHomeDisplay() &&
1499 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev);
1502 next.delayedResume = false;
1504 // If the top activity is the resumed one, nothing to do.
1505 if (mResumedActivity == next && next.state == ActivityState.RESUMED &&
1506 mStackSupervisor.allResumedActivitiesComplete()) {
1507 // Make sure we have executed any pending transitions, since there
1508 // should be nothing left to do at this point.
1509 mWindowManager.executeAppTransition();
1510 mNoAnimActivities.clear();
1511 ActivityOptions.abort(options);
1512 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next);
1513 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1517 final TaskRecord nextTask = next.task;
1518 if (prevTask != null && prevTask.stack == this &&
1519 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) {
1520 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1521 if (prevTask == nextTask) {
1522 prevTask.setFrontOfTask();
1523 } else if (prevTask != topTask()) {
1524 // This task is going away but it was supposed to return to the home stack.
1525 // Now the task above it has to return to the home task instead.
1526 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1;
1527 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE);
1529 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG,
1530 "resumeTopActivityLocked: Launching home next");
1531 // Only resume home if on home display
1532 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ?
1533 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo();
1534 return isOnHomeDisplay() &&
1535 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev);
1539 // If we are sleeping, and there is no resumed activity, and the top
1540 // activity is paused, well that is the state we want.
1541 if (mService.isSleepingOrShuttingDown()
1542 && mLastPausedActivity == next
1543 && mStackSupervisor.allPausedActivitiesComplete()) {
1544 // Make sure we have executed any pending transitions, since there
1545 // should be nothing left to do at this point.
1546 mWindowManager.executeAppTransition();
1547 mNoAnimActivities.clear();
1548 ActivityOptions.abort(options);
1549 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused");
1550 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1554 // Make sure that the user who owns this activity is started. If not,
1555 // we will just leave it as is because someone should be bringing
1556 // another user's activities to the top of the stack.
1557 if (mService.mStartedUsers.get(next.userId) == null) {
1558 Slog.w(TAG, "Skipping resume of top activity " + next
1559 + ": user " + next.userId + " is stopped");
1560 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1564 // The activity may be waiting for stop, but that is no longer
1565 // appropriate for it.
1566 mStackSupervisor.mStoppingActivities.remove(next);
1567 mStackSupervisor.mGoingToSleepActivities.remove(next);
1568 next.sleeping = false;
1569 mStackSupervisor.mWaitingVisibleActivities.remove(next);
1570 next.waitingVisible = false;
1572 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next);
1574 // If we are currently pausing an activity, then don't do anything
1575 // until that is done.
1576 if (!mStackSupervisor.allPausedActivitiesComplete()) {
1577 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG,
1578 "resumeTopActivityLocked: Skip resume: some activity pausing.");
1579 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1583 // Okay we are now going to start a switch, to 'next'. We may first
1584 // have to pause the current activity, but this is an important point
1585 // where we have decided to go to 'next' so keep track of that.
1586 // XXX "App Redirected" dialog is getting too many false positives
1587 // at this point, so turn off for now.
1589 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) {
1590 long now = SystemClock.uptimeMillis();
1591 final boolean inTime = mLastStartedActivity.startTime != 0
1592 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now;
1593 final int lastUid = mLastStartedActivity.info.applicationInfo.uid;
1594 final int nextUid = next.info.applicationInfo.uid;
1595 if (inTime && lastUid != nextUid
1596 && lastUid != next.launchedFromUid
1597 && mService.checkPermission(
1598 android.Manifest.permission.STOP_APP_SWITCHES,
1599 -1, next.launchedFromUid)
1600 != PackageManager.PERMISSION_GRANTED) {
1601 mService.showLaunchWarningLocked(mLastStartedActivity, next);
1603 next.startTime = now;
1604 mLastStartedActivity = next;
1607 next.startTime = SystemClock.uptimeMillis();
1608 mLastStartedActivity = next;
1612 // We need to start pausing the current activity so the top one
1613 // can be resumed...
1614 boolean dontWaitForPause = (next.info.flags&ActivityInfo.FLAG_RESUME_WHILE_PAUSING) != 0;
1615 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving, true, dontWaitForPause);
1616 if (mResumedActivity != null) {
1617 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity);
1618 pausing |= startPausingLocked(userLeaving, false, true, dontWaitForPause);
1621 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG,
1622 "resumeTopActivityLocked: Skip resume: need to start pausing");
1623 // At this point we want to put the upcoming activity's process
1624 // at the top of the LRU list, since we know we will be needing it
1625 // very soon and it would be a waste to let it get killed if it
1626 // happens to be sitting towards the end.
1627 if (next.app != null && next.app.thread != null) {
1628 mService.updateLruProcessLocked(next.app, true, null);
1630 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1634 // If the most recent activity was noHistory but was only stopped rather
1635 // than stopped+finished because the device went to sleep, we need to make
1636 // sure to finish it as we're making a new activity topmost.
1637 if (mService.isSleeping() && mLastNoHistoryActivity != null &&
1638 !mLastNoHistoryActivity.finishing) {
1639 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity +
1641 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED,
1642 null, "no-history", false);
1643 mLastNoHistoryActivity = null;
1646 if (prev != null && prev != next) {
1647 if (!prev.waitingVisible && next != null && !next.nowVisible) {
1648 prev.waitingVisible = true;
1649 mStackSupervisor.mWaitingVisibleActivities.add(prev);
1650 if (DEBUG_SWITCH) Slog.v(
1651 TAG, "Resuming top, waiting visible to hide: " + prev);
1653 // The next activity is already visible, so hide the previous
1654 // activity's windows right now so we can show the new one ASAP.
1655 // We only do this if the previous is finishing, which should mean
1656 // it is on top of the one being resumed so hiding it quickly
1657 // is good. Otherwise, we want to do the normal route of allowing
1658 // the resumed activity to be shown so we can decide if the
1659 // previous should actually be hidden depending on whether the
1660 // new one is found to be full-screen or not.
1661 if (prev.finishing) {
1662 mWindowManager.setAppVisibility(prev.appToken, false);
1663 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: "
1664 + prev + ", waitingVisible="
1665 + (prev != null ? prev.waitingVisible : null)
1666 + ", nowVisible=" + next.nowVisible);
1668 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: "
1669 + prev + ", waitingVisible="
1670 + (prev != null ? prev.waitingVisible : null)
1671 + ", nowVisible=" + next.nowVisible);
1676 // Launching this app's activity, make sure the app is no longer
1677 // considered stopped.
1679 AppGlobals.getPackageManager().setPackageStoppedState(
1680 next.packageName, false, next.userId); /* TODO: Verify if correct userid */
1681 } catch (RemoteException e1) {
1682 } catch (IllegalArgumentException e) {
1683 Slog.w(TAG, "Failed trying to unstop package "
1684 + next.packageName + ": " + e);
1687 // We are starting up the next activity, so tell the window manager
1688 // that the previous one will be hidden soon. This way it can know
1689 // to ignore it when computing the desired screen orientation.
1690 boolean anim = true;
1692 if (prev.finishing) {
1693 if (DEBUG_TRANSITION) Slog.v(TAG,
1694 "Prepare close transition: prev=" + prev);
1695 if (mNoAnimActivities.contains(prev)) {
1697 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false);
1699 mWindowManager.prepareAppTransition(prev.task == next.task
1700 ? AppTransition.TRANSIT_ACTIVITY_CLOSE
1701 : AppTransition.TRANSIT_TASK_CLOSE, false);
1703 mWindowManager.setAppWillBeHidden(prev.appToken);
1704 mWindowManager.setAppVisibility(prev.appToken, false);
1706 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev);
1707 if (mNoAnimActivities.contains(next)) {
1709 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false);
1711 mWindowManager.prepareAppTransition(prev.task == next.task
1712 ? AppTransition.TRANSIT_ACTIVITY_OPEN
1713 : next.mLaunchTaskBehind
1714 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND
1715 : AppTransition.TRANSIT_TASK_OPEN, false);
1719 mWindowManager.setAppWillBeHidden(prev.appToken);
1720 mWindowManager.setAppVisibility(prev.appToken, false);
1723 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous");
1724 if (mNoAnimActivities.contains(next)) {
1726 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false);
1728 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false);
1732 Bundle resumeAnimOptions = null;
1734 ActivityOptions opts = next.getOptionsForTargetActivityLocked();
1736 resumeAnimOptions = opts.toBundle();
1738 next.applyOptionsLocked();
1740 next.clearOptionsLocked();
1743 ActivityStack lastStack = mStackSupervisor.getLastStack();
1744 if (next.app != null && next.app.thread != null) {
1745 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next);
1747 // This activity is now becoming visible.
1748 mWindowManager.setAppVisibility(next.appToken, true);
1750 // schedule launch ticks to collect information about slow apps.
1751 next.startLaunchTickingLocked();
1753 ActivityRecord lastResumedActivity =
1754 lastStack == null ? null :lastStack.mResumedActivity;
1755 ActivityState lastState = next.state;
1757 mService.updateCpuStats();
1759 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)");
1760 next.state = ActivityState.RESUMED;
1761 mResumedActivity = next;
1762 next.task.touchActiveTime();
1763 mService.addRecentTaskLocked(next.task);
1764 mService.updateLruProcessLocked(next.app, true, null);
1765 updateLRUListLocked(next);
1766 mService.updateOomAdjLocked();
1768 // Have the window manager re-evaluate the orientation of
1769 // the screen based on the new activity order.
1770 boolean notUpdated = true;
1771 if (mStackSupervisor.isFrontStack(this)) {
1772 Configuration config = mWindowManager.updateOrientationFromAppTokens(
1773 mService.mConfiguration,
1774 next.mayFreezeScreenLocked(next.app) ? next.appToken : null);
1775 if (config != null) {
1776 next.frozenBeforeDestroy = true;
1778 notUpdated = !mService.updateConfigurationLocked(config, next, false, false);
1782 // The configuration update wasn't able to keep the existing
1783 // instance of the activity, and instead started a new one.
1784 // We should be all done, but let's just make sure our activity
1785 // is still at the top and schedule another run if something
1787 ActivityRecord nextNext = topRunningActivityLocked(null);
1788 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG,
1789 "Activity config changed during resume: " + next
1790 + ", new next: " + nextNext);
1791 if (nextNext != next) {
1793 mStackSupervisor.scheduleResumeTopActivities();
1795 if (mStackSupervisor.reportResumedActivityLocked(next)) {
1796 mNoAnimActivities.clear();
1797 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1800 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1805 // Deliver all pending results.
1806 ArrayList<ResultInfo> a = next.results;
1808 final int N = a.size();
1809 if (!next.finishing && N > 0) {
1810 if (DEBUG_RESULTS) Slog.v(
1811 TAG, "Delivering results to " + next
1813 next.app.thread.scheduleSendResult(next.appToken, a);
1817 if (next.newIntents != null) {
1818 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken);
1821 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY,
1822 next.userId, System.identityHashCode(next),
1823 next.task.taskId, next.shortComponentName);
1825 next.sleeping = false;
1826 mService.showAskCompatModeDialogLocked(next);
1827 next.app.pendingUiClean = true;
1828 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP);
1829 next.clearOptionsLocked();
1830 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState,
1831 mService.isNextTransitionForward(), resumeAnimOptions);
1833 mStackSupervisor.checkReadyForSleepLocked();
1835 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next);
1836 } catch (Exception e) {
1837 // Whoops, need to restart this activity!
1838 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to "
1839 + lastState + ": " + next);
1840 next.state = lastState;
1841 if (lastStack != null) {
1842 lastStack.mResumedActivity = lastResumedActivity;
1844 Slog.i(TAG, "Restarting because process died: " + next);
1845 if (!next.hasBeenLaunched) {
1846 next.hasBeenLaunched = true;
1847 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null &&
1848 mStackSupervisor.isFrontStack(lastStack)) {
1849 mWindowManager.setAppStartingWindow(
1850 next.appToken, next.packageName, next.theme,
1851 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo),
1852 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo,
1853 next.windowFlags, null, true);
1855 mStackSupervisor.startSpecificActivityLocked(next, true, false);
1856 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1860 // From this point on, if something goes wrong there is no way
1861 // to recover the activity.
1863 next.visible = true;
1864 completeResumeLocked(next);
1865 } catch (Exception e) {
1866 // If any exception gets thrown, toss away this
1867 // activity and try the next one.
1868 Slog.w(TAG, "Exception thrown during resume of " + next, e);
1869 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null,
1870 "resume-exception", true);
1871 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1874 next.stopped = false;
1877 // Whoops, need to restart this activity!
1878 if (!next.hasBeenLaunched) {
1879 next.hasBeenLaunched = true;
1881 if (SHOW_APP_STARTING_PREVIEW) {
1882 mWindowManager.setAppStartingWindow(
1883 next.appToken, next.packageName, next.theme,
1884 mService.compatibilityInfoForPackageLocked(
1885 next.info.applicationInfo),
1886 next.nonLocalizedLabel,
1887 next.labelRes, next.icon, next.logo, next.windowFlags,
1890 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next);
1892 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next);
1893 mStackSupervisor.startSpecificActivityLocked(next, true, true);
1896 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
1900 private void insertTaskAtTop(TaskRecord task) {
1901 // If this is being moved to the top by another activity or being launched from the home
1902 // activity, set mOnTopOfHome accordingly.
1903 if (isOnHomeDisplay()) {
1904 ActivityStack lastStack = mStackSupervisor.getLastStack();
1905 final boolean fromHome = lastStack.isHomeStack();
1906 if (!isHomeStack() && (fromHome || topTask() != task)) {
1907 task.setTaskToReturnTo(fromHome
1908 ? lastStack.topTask() == null
1909 ? HOME_ACTIVITY_TYPE
1910 : lastStack.topTask().taskType
1911 : APPLICATION_ACTIVITY_TYPE);
1914 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE);
1917 mTaskHistory.remove(task);
1918 // Now put task at top.
1919 int taskNdx = mTaskHistory.size();
1920 if (!isCurrentProfileLocked(task.userId)) {
1921 // Put non-current user tasks below current user tasks.
1922 while (--taskNdx >= 0) {
1923 if (!isCurrentProfileLocked(mTaskHistory.get(taskNdx).userId)) {
1929 mTaskHistory.add(taskNdx, task);
1930 updateTaskMovement(task, true);
1933 final void startActivityLocked(ActivityRecord r, boolean newTask,
1934 boolean doResume, boolean keepCurTransition, Bundle options) {
1935 TaskRecord rTask = r.task;
1936 final int taskId = rTask.taskId;
1937 // mLaunchTaskBehind tasks get placed at the back of the task stack.
1938 if (!r.mLaunchTaskBehind && (taskForIdLocked(taskId) == null || newTask)) {
1939 // Last activity in task had been removed or ActivityManagerService is reusing task.
1940 // Insert or replace.
1941 // Might not even be in.
1942 insertTaskAtTop(rTask);
1943 mWindowManager.moveTaskToTop(taskId);
1945 TaskRecord task = null;
1947 // If starting in an existing task, find where that is...
1948 boolean startIt = true;
1949 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
1950 task = mTaskHistory.get(taskNdx);
1951 if (task.getTopActivity() == null) {
1952 // All activities in task are finishing.
1955 if (task == r.task) {
1956 // Here it is! Now, if this is not yet visible to the
1957 // user, then just add it without starting; it will
1958 // get started when the user navigates back to it.
1960 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task "
1961 + task, new RuntimeException("here").fillInStackTrace());
1962 task.addActivityToTop(r);
1964 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken,
1965 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen,
1966 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0,
1967 r.userId, r.info.configChanges, task.voiceSession != null,
1968 r.mLaunchTaskBehind);
1969 if (VALIDATE_TOKENS) {
1970 validateAppTokensLocked();
1972 ActivityOptions.abort(options);
1976 } else if (task.numFullscreen > 0) {
1982 // Place a new activity at top of stack, so it is next to interact
1985 // If we are not placing the new activity frontmost, we do not want
1986 // to deliver the onUserLeaving callback to the actual frontmost
1988 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) {
1989 mStackSupervisor.mUserLeaving = false;
1990 if (DEBUG_USER_LEAVING) Slog.v(TAG,
1991 "startActivity() behind front, mUserLeaving=false");
1996 // Slot the activity into the history stack and proceed
1997 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task,
1998 new RuntimeException("here").fillInStackTrace());
1999 task.addActivityToTop(r);
2000 task.setFrontOfTask();
2003 if (!isHomeStack() || numActivities() > 0) {
2004 // We want to show the starting preview window if we are
2005 // switching to a new task, or the next activity's process is
2006 // not currently running.
2007 boolean showStartingIcon = newTask;
2008 ProcessRecord proc = r.app;
2010 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid);
2012 if (proc == null || proc.thread == null) {
2013 showStartingIcon = true;
2015 if (DEBUG_TRANSITION) Slog.v(TAG,
2016 "Prepare open transition: starting " + r);
2017 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) {
2018 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition);
2019 mNoAnimActivities.add(r);
2021 mWindowManager.prepareAppTransition(newTask
2022 ? r.mLaunchTaskBehind
2023 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND
2024 : AppTransition.TRANSIT_TASK_OPEN
2025 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition);
2026 mNoAnimActivities.remove(r);
2028 mWindowManager.addAppToken(task.mActivities.indexOf(r),
2029 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen,
2030 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId,
2031 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind);
2032 boolean doShow = true;
2034 // Even though this activity is starting fresh, we still need
2035 // to reset it to make sure we apply affinities to move any
2036 // existing activities from other tasks in to it.
2037 // If the caller has requested that the target task be
2038 // reset, then do so.
2039 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) {
2040 resetTaskIfNeededLocked(r, r);
2041 doShow = topRunningNonDelayedActivityLocked(null) == r;
2043 } else if (options != null && new ActivityOptions(options).getAnimationType()
2044 == ActivityOptions.ANIM_SCENE_TRANSITION) {
2047 if (r.mLaunchTaskBehind) {
2048 // Don't do a starting window for mLaunchTaskBehind. More importantly make sure we
2049 // tell WindowManager that r is visible even though it is at the back of the stack.
2050 mWindowManager.setAppVisibility(r.appToken, true);
2051 ensureActivitiesVisibleLocked(null, 0);
2052 } else if (SHOW_APP_STARTING_PREVIEW && doShow) {
2053 // Figure out if we are transitioning from another activity that is
2054 // "has the same starting icon" as the next one. This allows the
2055 // window manager to keep the previous window it had previously
2056 // created, if it still had one.
2057 ActivityRecord prev = mResumedActivity;
2059 // We don't want to reuse the previous starting preview if:
2060 // (1) The current activity is in a different task.
2061 if (prev.task != r.task) {
2064 // (2) The current activity is already displayed.
2065 else if (prev.nowVisible) {
2069 mWindowManager.setAppStartingWindow(
2070 r.appToken, r.packageName, r.theme,
2071 mService.compatibilityInfoForPackageLocked(
2072 r.info.applicationInfo), r.nonLocalizedLabel,
2073 r.labelRes, r.icon, r.logo, r.windowFlags,
2074 prev != null ? prev.appToken : null, showStartingIcon);
2075 r.mStartingWindowShown = true;
2078 // If this is the first activity, don't do any fancy animations,
2079 // because there is nothing for it to animate on top of.
2080 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken,
2081 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen,
2082 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId,
2083 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind);
2084 ActivityOptions.abort(options);
2087 if (VALIDATE_TOKENS) {
2088 validateAppTokensLocked();
2092 mStackSupervisor.resumeTopActivitiesLocked(this, r, options);
2096 final void validateAppTokensLocked() {
2097 mValidateAppTokens.clear();
2098 mValidateAppTokens.ensureCapacity(numActivities());
2099 final int numTasks = mTaskHistory.size();
2100 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) {
2101 TaskRecord task = mTaskHistory.get(taskNdx);
2102 final ArrayList<ActivityRecord> activities = task.mActivities;
2103 if (activities.isEmpty()) {
2106 TaskGroup group = new TaskGroup();
2107 group.taskId = task.taskId;
2108 mValidateAppTokens.add(group);
2109 final int numActivities = activities.size();
2110 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) {
2111 final ActivityRecord r = activities.get(activityNdx);
2112 group.tokens.add(r.appToken);
2115 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens);
2119 * Perform a reset of the given task, if needed as part of launching it.
2120 * Returns the new HistoryRecord at the top of the task.
2123 * Helper method for #resetTaskIfNeededLocked.
2124 * We are inside of the task being reset... we'll either finish this activity, push it out
2125 * for another task, or leave it as-is.
2126 * @param task The task containing the Activity (taskTop) that might be reset.
2128 * @return An ActivityOptions that needs to be processed.
2130 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) {
2131 ActivityOptions topOptions = null;
2133 int replyChainEnd = -1;
2134 boolean canMoveOptions = true;
2136 // We only do this for activities that are not the root of the task (since if we finish
2137 // the root, we may no longer have the task!).
2138 final ArrayList<ActivityRecord> activities = task.mActivities;
2139 final int numActivities = activities.size();
2140 final int rootActivityNdx = task.findEffectiveRootIndex();
2141 for (int i = numActivities - 1; i > rootActivityNdx; --i ) {
2142 ActivityRecord target = activities.get(i);
2143 if (target.frontOfTask)
2146 final int flags = target.info.flags;
2147 final boolean finishOnTaskLaunch =
2148 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0;
2149 final boolean allowTaskReparenting =
2150 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0;
2151 final boolean clearWhenTaskReset =
2152 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0;
2154 if (!finishOnTaskLaunch
2155 && !clearWhenTaskReset
2156 && target.resultTo != null) {
2157 // If this activity is sending a reply to a previous
2158 // activity, we can't do anything with it now until
2159 // we reach the start of the reply chain.
2160 // XXX note that we are assuming the result is always
2161 // to the previous activity, which is almost always
2162 // the case but we really shouldn't count on.
2163 if (replyChainEnd < 0) {
2166 } else if (!finishOnTaskLaunch
2167 && !clearWhenTaskReset
2168 && allowTaskReparenting
2169 && target.taskAffinity != null
2170 && !target.taskAffinity.equals(task.affinity)) {
2171 // If this activity has an affinity for another
2172 // task, then we need to move it out of here. We will
2173 // move it as far out of the way as possible, to the
2174 // bottom of the activity stack. This also keeps it
2175 // correctly ordered with any activities we previously
2177 final TaskRecord targetTask;
2178 final ActivityRecord bottom =
2179 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ?
2180 mTaskHistory.get(0).mActivities.get(0) : null;
2181 if (bottom != null && target.taskAffinity != null
2182 && target.taskAffinity.equals(bottom.task.affinity)) {
2183 // If the activity currently at the bottom has the
2184 // same task affinity as the one we are moving,
2185 // then merge it into the same task.
2186 targetTask = bottom.task;
2187 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target
2188 + " out to bottom task " + bottom.task);
2190 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info,
2191 null, null, null, false);
2192 targetTask.affinityIntent = target.intent;
2193 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target
2194 + " out to new task " + target.task);
2197 final int targetTaskId = targetTask.taskId;
2198 mWindowManager.setAppGroupId(target.appToken, targetTaskId);
2200 boolean noOptions = canMoveOptions;
2201 final int start = replyChainEnd < 0 ? i : replyChainEnd;
2202 for (int srcPos = start; srcPos >= i; --srcPos) {
2203 final ActivityRecord p = activities.get(srcPos);
2208 canMoveOptions = false;
2209 if (noOptions && topOptions == null) {
2210 topOptions = p.takeOptionsLocked();
2211 if (topOptions != null) {
2215 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task="
2216 + task + " adding to task=" + targetTask
2217 + " Callers=" + Debug.getCallers(4));
2218 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p
2219 + " out to target's task " + target.task);
2220 p.setTask(targetTask, null);
2221 targetTask.addActivityAtBottom(p);
2223 mWindowManager.setAppGroupId(p.appToken, targetTaskId);
2226 mWindowManager.moveTaskToBottom(targetTaskId);
2227 if (VALIDATE_TOKENS) {
2228 validateAppTokensLocked();
2232 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) {
2233 // If the activity should just be removed -- either
2234 // because it asks for it, or the task should be
2235 // cleared -- then finish it and anything that is
2236 // part of its reply chain.
2238 if (clearWhenTaskReset) {
2239 // In this case, we want to finish this activity
2240 // and everything above it, so be sneaky and pretend
2241 // like these are all in the reply chain.
2242 end = activities.size() - 1;
2243 } else if (replyChainEnd < 0) {
2246 end = replyChainEnd;
2248 boolean noOptions = canMoveOptions;
2249 for (int srcPos = i; srcPos <= end; srcPos++) {
2250 ActivityRecord p = activities.get(srcPos);
2254 canMoveOptions = false;
2255 if (noOptions && topOptions == null) {
2256 topOptions = p.takeOptionsLocked();
2257 if (topOptions != null) {
2261 if (DEBUG_TASKS) Slog.w(TAG,
2262 "resetTaskIntendedTask: calling finishActivity on " + p);
2263 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) {
2270 // If we were in the middle of a chain, well the
2271 // activity that started it all doesn't want anything
2272 // special, so leave it all as-is.
2281 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given
2282 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop.
2283 * @param affinityTask The task we are looking for an affinity to.
2284 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to.
2285 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked.
2286 * @param forceReset Flag passed in to resetTaskIfNeededLocked.
2288 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task,
2289 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) {
2290 int replyChainEnd = -1;
2291 final int taskId = task.taskId;
2292 final String taskAffinity = task.affinity;
2294 final ArrayList<ActivityRecord> activities = affinityTask.mActivities;
2295 final int numActivities = activities.size();
2296 final int rootActivityNdx = affinityTask.findEffectiveRootIndex();
2298 // Do not operate on or below the effective root Activity.
2299 for (int i = numActivities - 1; i > rootActivityNdx; --i) {
2300 ActivityRecord target = activities.get(i);
2301 if (target.frontOfTask)
2304 final int flags = target.info.flags;
2305 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0;
2306 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0;
2308 if (target.resultTo != null) {
2309 // If this activity is sending a reply to a previous
2310 // activity, we can't do anything with it now until
2311 // we reach the start of the reply chain.
2312 // XXX note that we are assuming the result is always
2313 // to the previous activity, which is almost always
2314 // the case but we really shouldn't count on.
2315 if (replyChainEnd < 0) {
2318 } else if (topTaskIsHigher
2319 && allowTaskReparenting
2320 && taskAffinity != null
2321 && taskAffinity.equals(target.taskAffinity)) {
2322 // This activity has an affinity for our task. Either remove it if we are
2323 // clearing or move it over to our task. Note that
2324 // we currently punt on the case where we are resetting a
2325 // task that is not at the top but who has activities above
2326 // with an affinity to it... this is really not a normal
2327 // case, and we will need to later pull that task to the front
2328 // and usually at that point we will do the reset and pick
2329 // up those remaining activities. (This only happens if
2330 // someone starts an activity in a new task from an activity
2331 // in a task that is not currently on top.)
2332 if (forceReset || finishOnTaskLaunch) {
2333 final int start = replyChainEnd >= 0 ? replyChainEnd : i;
2334 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i);
2335 for (int srcPos = start; srcPos >= i; --srcPos) {
2336 final ActivityRecord p = activities.get(srcPos);
2340 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false);
2343 if (taskInsertionPoint < 0) {
2344 taskInsertionPoint = task.mActivities.size();
2348 final int start = replyChainEnd >= 0 ? replyChainEnd : i;
2349 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":"
2350 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint);
2351 for (int srcPos = start; srcPos >= i; --srcPos) {
2352 final ActivityRecord p = activities.get(srcPos);
2353 p.setTask(task, null);
2354 task.addActivityAtIndex(taskInsertionPoint, p);
2356 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p
2357 + " to stack at " + task,
2358 new RuntimeException("here").fillInStackTrace());
2359 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos
2360 + " in to resetting task " + task);
2361 mWindowManager.setAppGroupId(p.appToken, taskId);
2363 mWindowManager.moveTaskToTop(taskId);
2364 if (VALIDATE_TOKENS) {
2365 validateAppTokensLocked();
2368 // Now we've moved it in to place... but what if this is
2369 // a singleTop activity and we have put it on top of another
2370 // instance of the same activity? Then we drop the instance
2371 // below so it remains singleTop.
2372 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) {
2373 ArrayList<ActivityRecord> taskActivities = task.mActivities;
2374 int targetNdx = taskActivities.indexOf(target);
2375 if (targetNdx > 0) {
2376 ActivityRecord p = taskActivities.get(targetNdx - 1);
2377 if (p.intent.getComponent().equals(target.intent.getComponent())) {
2378 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace",
2388 return taskInsertionPoint;
2391 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop,
2392 ActivityRecord newActivity) {
2393 boolean forceReset =
2394 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0;
2395 if (ACTIVITY_INACTIVE_RESET_TIME > 0
2396 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) {
2397 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) {
2402 final TaskRecord task = taskTop.task;
2404 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true
2405 * for remaining tasks. Used for later tasks to reparent to task. */
2406 boolean taskFound = false;
2408 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */
2409 ActivityOptions topOptions = null;
2411 // Preserve the location for reparenting in the new task.
2412 int reparentInsertionPoint = -1;
2414 for (int i = mTaskHistory.size() - 1; i >= 0; --i) {
2415 final TaskRecord targetTask = mTaskHistory.get(i);
2417 if (targetTask == task) {
2418 topOptions = resetTargetTaskIfNeededLocked(task, forceReset);
2421 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task,
2422 taskFound, forceReset, reparentInsertionPoint);
2426 int taskNdx = mTaskHistory.indexOf(task);
2428 taskTop = mTaskHistory.get(taskNdx--).getTopActivity();
2429 } while (taskTop == null && taskNdx >= 0);
2431 if (topOptions != null) {
2432 // If we got some ActivityOptions from an activity on top that
2433 // was removed from the task, propagate them to the new real top.
2434 if (taskTop != null) {
2435 taskTop.updateOptionsLocked(topOptions);
2444 void sendActivityResultLocked(int callingUid, ActivityRecord r,
2445 String resultWho, int requestCode, int resultCode, Intent data) {
2447 if (callingUid > 0) {
2448 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName,
2449 data, r.getUriPermissionsLocked(), r.userId);
2452 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r
2453 + " : who=" + resultWho + " req=" + requestCode
2454 + " res=" + resultCode + " data=" + data);
2455 if (mResumedActivity == r && r.app != null && r.app.thread != null) {
2457 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>();
2458 list.add(new ResultInfo(resultWho, requestCode,
2460 r.app.thread.scheduleSendResult(r.appToken, list);
2462 } catch (Exception e) {
2463 Slog.w(TAG, "Exception thrown sending result to " + r, e);
2467 r.addResultLocked(null, resultWho, requestCode, resultCode, data);
2470 private void adjustFocusedActivityLocked(ActivityRecord r) {
2471 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) {
2472 ActivityRecord next = topRunningActivityLocked(null);
2474 final TaskRecord task = r.task;
2475 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) {
2476 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo());
2479 ActivityRecord top = mStackSupervisor.topRunningActivityLocked();
2481 mService.setFocusedActivityLocked(top);
2486 final void stopActivityLocked(ActivityRecord r) {
2487 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r);
2488 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0
2489 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) {
2491 if (!mService.isSleeping()) {
2493 Slog.d(TAG, "no-history finish of " + r);
2495 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null,
2496 "no-history", false);
2498 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r
2499 + " on stop because we're just sleeping");
2504 if (r.app != null && r.app.thread != null) {
2505 adjustFocusedActivityLocked(r);
2506 r.resumeKeyDispatchingLocked();
2509 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r
2510 + " (stop requested)");
2511 r.state = ActivityState.STOPPING;
2512 if (DEBUG_VISBILITY) Slog.v(
2513 TAG, "Stopping visible=" + r.visible + " for " + r);
2515 mWindowManager.setAppVisibility(r.appToken, false);
2517 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags);
2518 if (mService.isSleepingOrShuttingDown()) {
2519 r.setSleeping(true);
2521 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r);
2522 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT);
2523 } catch (Exception e) {
2524 // Maybe just ignore exceptions here... if the process
2525 // has crashed, our death notification will clean things
2527 Slog.w(TAG, "Exception thrown during pause", e);
2528 // Just in case, assume it to be stopped.
2530 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r);
2531 r.state = ActivityState.STOPPED;
2532 if (r.configDestroy) {
2533 destroyActivityLocked(r, true, "stop-except");
2540 * @return Returns true if the activity is being finished, false if for
2541 * some reason it is being left as-is.
2543 final boolean requestFinishActivityLocked(IBinder token, int resultCode,
2544 Intent resultData, String reason, boolean oomAdj) {
2545 ActivityRecord r = isInStackLocked(token);
2546 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v(
2547 TAG, "Finishing activity token=" + token + " r="
2548 + ", result=" + resultCode + ", data=" + resultData
2549 + ", reason=" + reason);
2554 finishActivityLocked(r, resultCode, resultData, reason, oomAdj);
2558 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) {
2559 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
2560 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
2561 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
2562 ActivityRecord r = activities.get(activityNdx);
2563 if (r.resultTo == self && r.requestCode == requestCode) {
2564 if ((r.resultWho == null && resultWho == null) ||
2565 (r.resultWho != null && r.resultWho.equals(resultWho))) {
2566 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub",
2572 mService.updateOomAdjLocked();
2575 final void finishTopRunningActivityLocked(ProcessRecord app) {
2576 ActivityRecord r = topRunningActivityLocked(null);
2577 if (r != null && r.app == app) {
2578 // If the top running activity is from this crashing
2579 // process, then terminate it to avoid getting in a loop.
2580 Slog.w(TAG, " Force finishing activity 1 "
2581 + r.intent.getComponent().flattenToShortString());
2582 int taskNdx = mTaskHistory.indexOf(r.task);
2583 int activityNdx = r.task.mActivities.indexOf(r);
2584 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false);
2585 // Also terminate any activities below it that aren't yet
2586 // stopped, to avoid a situation where one will get
2587 // re-start our crashing activity once it gets resumed again.
2589 if (activityNdx < 0) {
2595 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1;
2596 } while (activityNdx < 0);
2598 if (activityNdx >= 0) {
2599 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx);
2600 if (r.state == ActivityState.RESUMED
2601 || r.state == ActivityState.PAUSING
2602 || r.state == ActivityState.PAUSED) {
2603 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) {
2604 Slog.w(TAG, " Force finishing activity 2 "
2605 + r.intent.getComponent().flattenToShortString());
2606 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false);
2613 final void finishVoiceTask(IVoiceInteractionSession session) {
2614 IBinder sessionBinder = session.asBinder();
2615 boolean didOne = false;
2616 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
2617 TaskRecord tr = mTaskHistory.get(taskNdx);
2618 if (tr.voiceSession != null && tr.voiceSession.asBinder() == sessionBinder) {
2619 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) {
2620 ActivityRecord r = tr.mActivities.get(activityNdx);
2622 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "finish-voice",
2630 mService.updateOomAdjLocked();
2634 final boolean finishActivityAffinityLocked(ActivityRecord r) {
2635 ArrayList<ActivityRecord> activities = r.task.mActivities;
2636 for (int index = activities.indexOf(r); index >= 0; --index) {
2637 ActivityRecord cur = activities.get(index);
2638 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) {
2641 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true);
2646 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) {
2648 ActivityRecord resultTo = r.resultTo;
2649 if (resultTo != null) {
2650 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo
2651 + " who=" + r.resultWho + " req=" + r.requestCode
2652 + " res=" + resultCode + " data=" + resultData);
2653 if (resultTo.userId != r.userId) {
2654 if (resultData != null) {
2655 resultData.setContentUserHint(r.userId);
2658 if (r.info.applicationInfo.uid > 0) {
2659 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid,
2660 resultTo.packageName, resultData,
2661 resultTo.getUriPermissionsLocked(), resultTo.userId);
2663 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode,
2667 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r);
2669 // Make sure this HistoryRecord is not holding on to other resources,
2670 // because clients have remote IPC references to this object so we
2671 // can't assume that will go away and want to avoid circular IPC refs.
2673 r.pendingResults = null;
2674 r.newIntents = null;
2679 * @return Returns true if this activity has been removed from the history
2680 * list, or false if it is still in the list and will be removed later.
2682 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData,
2683 String reason, boolean oomAdj) {
2685 Slog.w(TAG, "Duplicate finish request for " + r);
2690 final TaskRecord task = r.task;
2691 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY,
2692 r.userId, System.identityHashCode(r),
2693 task.taskId, r.shortComponentName, reason);
2694 final ArrayList<ActivityRecord> activities = task.mActivities;
2695 final int index = activities.indexOf(r);
2696 if (index < (activities.size() - 1)) {
2697 task.setFrontOfTask();
2698 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) {
2699 // If the caller asked that this activity (and all above it)
2700 // be cleared when the task is reset, don't lose that information,
2701 // but propagate it up to the next activity.
2702 ActivityRecord next = activities.get(index+1);
2703 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
2707 r.pauseKeyDispatchingLocked();
2709 adjustFocusedActivityLocked(r);
2711 finishActivityResultsLocked(r, resultCode, resultData);
2713 if (mResumedActivity == r) {
2714 boolean endTask = index <= 0;
2715 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG,
2716 "Prepare close transition: finishing " + r);
2717 mWindowManager.prepareAppTransition(endTask
2718 ? AppTransition.TRANSIT_TASK_CLOSE
2719 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false);
2721 // Tell window manager to prepare for this one to be removed.
2722 mWindowManager.setAppVisibility(r.appToken, false);
2724 if (mPausingActivity == null) {
2725 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r);
2726 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false");
2727 startPausingLocked(false, false, false, false);
2731 mStackSupervisor.endLockTaskModeIfTaskEnding(task);
2733 } else if (r.state != ActivityState.PAUSING) {
2734 // If the activity is PAUSING, we will complete the finish once
2735 // it is done pausing; else we can just directly finish it here.
2736 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r);
2737 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null;
2739 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r);
2745 static final int FINISH_IMMEDIATELY = 0;
2746 static final int FINISH_AFTER_PAUSE = 1;
2747 static final int FINISH_AFTER_VISIBLE = 2;
2749 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) {
2750 // First things first: if this activity is currently visible,
2751 // and the resumed activity is not yet visible, then hold off on
2752 // finishing until the resumed one becomes visible.
2753 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) {
2754 if (!mStackSupervisor.mStoppingActivities.contains(r)) {
2755 mStackSupervisor.mStoppingActivities.add(r);
2756 if (mStackSupervisor.mStoppingActivities.size() > 3
2757 || r.frontOfTask && mTaskHistory.size() <= 1) {
2758 // If we already have a few activities waiting to stop,
2759 // then give up on things going idle and start clearing
2760 // them out. Or if r is the last of activity of the last task the stack
2761 // will be empty and must be cleared immediately.
2762 mStackSupervisor.scheduleIdleLocked();
2764 mStackSupervisor.checkReadyForSleepLocked();
2767 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r
2768 + " (finish requested)");
2769 r.state = ActivityState.STOPPING;
2771 mService.updateOomAdjLocked();
2776 // make sure the record is cleaned out of other places.
2777 mStackSupervisor.mStoppingActivities.remove(r);
2778 mStackSupervisor.mGoingToSleepActivities.remove(r);
2779 mStackSupervisor.mWaitingVisibleActivities.remove(r);
2780 r.waitingVisible = false;
2781 if (mResumedActivity == r) {
2782 mResumedActivity = null;
2784 final ActivityState prevState = r.state;
2785 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r);
2786 r.state = ActivityState.FINISHING;
2788 if (mode == FINISH_IMMEDIATELY
2789 || prevState == ActivityState.STOPPED
2790 || prevState == ActivityState.INITIALIZING) {
2791 // If this activity is already stopped, we can just finish
2794 boolean activityRemoved = destroyActivityLocked(r, true, "finish-imm");
2795 if (activityRemoved) {
2796 mStackSupervisor.resumeTopActivitiesLocked();
2798 if (DEBUG_CONTAINERS) Slog.d(TAG,
2799 "destroyActivityLocked: finishCurrentActivityLocked r=" + r +
2800 " destroy returned removed=" + activityRemoved);
2801 return activityRemoved ? null : r;
2804 // Need to go through the full pause cycle to get this
2805 // activity into the stopped state and then finish it.
2806 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r);
2807 mStackSupervisor.mFinishingActivities.add(r);
2808 r.resumeKeyDispatchingLocked();
2809 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null);
2813 void finishAllActivitiesLocked(boolean immediately) {
2814 boolean noActivitiesInStack = true;
2815 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
2816 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
2817 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
2818 final ActivityRecord r = activities.get(activityNdx);
2819 noActivitiesInStack = false;
2820 if (r.finishing && !immediately) {
2823 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r + " immediately");
2824 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false);
2827 if (noActivitiesInStack) {
2828 mActivityContainer.onTaskListEmptyLocked();
2832 final boolean shouldUpRecreateTaskLocked(ActivityRecord srec, String destAffinity) {
2833 // Basic case: for simple app-centric recents, we need to recreate
2834 // the task if the affinity has changed.
2835 if (srec == null || srec.task.affinity == null ||
2836 !srec.task.affinity.equals(destAffinity)) {
2839 // Document-centric case: an app may be split in to multiple documents;
2840 // they need to re-create their task if this current activity is the root
2841 // of a document, unless simply finishing it will return them to the the
2842 // correct app behind.
2843 if (srec.frontOfTask && srec.task != null && srec.task.getBaseIntent() != null
2844 && srec.task.getBaseIntent().isDocument()) {
2845 // Okay, this activity is at the root of its task. What to do, what to do...
2846 if (srec.task.getTaskToReturnTo() != ActivityRecord.APPLICATION_ACTIVITY_TYPE) {
2847 // Finishing won't return to an application, so we need to recreate.
2850 // We now need to get the task below it to determine what to do.
2851 int taskIdx = mTaskHistory.indexOf(srec.task);
2853 Slog.w(TAG, "shouldUpRecreateTask: task not in history for " + srec);
2857 // At the bottom of the stack, nothing to go back to.
2860 TaskRecord prevTask = mTaskHistory.get(taskIdx);
2861 if (!srec.task.affinity.equals(prevTask.affinity)) {
2862 // These are different apps, so need to recreate.
2869 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode,
2870 Intent resultData) {
2871 final ActivityRecord srec = ActivityRecord.forToken(token);
2872 final TaskRecord task = srec.task;
2873 final ArrayList<ActivityRecord> activities = task.mActivities;
2874 final int start = activities.indexOf(srec);
2875 if (!mTaskHistory.contains(task) || (start < 0)) {
2878 int finishTo = start - 1;
2879 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo);
2880 boolean foundParentInTask = false;
2881 final ComponentName dest = destIntent.getComponent();
2882 if (start > 0 && dest != null) {
2883 for (int i = finishTo; i >= 0; i--) {
2884 ActivityRecord r = activities.get(i);
2885 if (r.info.packageName.equals(dest.getPackageName()) &&
2886 r.info.name.equals(dest.getClassName())) {
2889 foundParentInTask = true;
2895 IActivityController controller = mService.mController;
2896 if (controller != null) {
2897 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0);
2899 // ask watcher if this is allowed
2900 boolean resumeOK = true;
2902 resumeOK = controller.activityResuming(next.packageName);
2903 } catch (RemoteException e) {
2904 mService.mController = null;
2905 Watchdog.getInstance().setActivityController(null);
2913 final long origId = Binder.clearCallingIdentity();
2914 for (int i = start; i > finishTo; i--) {
2915 ActivityRecord r = activities.get(i);
2916 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true);
2917 // Only return the supplied result for the first activity finished
2918 resultCode = Activity.RESULT_CANCELED;
2922 if (parent != null && foundParentInTask) {
2923 final int parentLaunchMode = parent.info.launchMode;
2924 final int destIntentFlags = destIntent.getFlags();
2925 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE ||
2926 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK ||
2927 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP ||
2928 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) {
2929 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent,
2933 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo(
2934 destIntent.getComponent(), 0, srec.userId);
2935 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent,
2936 null, aInfo, null, null, parent.appToken, null,
2937 0, -1, parent.launchedFromUid, parent.launchedFromPackage,
2938 -1, parent.launchedFromUid, 0, null, true, null, null, null);
2939 foundParentInTask = res == ActivityManager.START_SUCCESS;
2940 } catch (RemoteException e) {
2941 foundParentInTask = false;
2943 requestFinishActivityLocked(parent.appToken, resultCode,
2944 resultData, "navigate-up", true);
2947 Binder.restoreCallingIdentity(origId);
2948 return foundParentInTask;
2951 * Perform the common clean-up of an activity record. This is called both
2952 * as part of destroyActivityLocked() (when destroying the client-side
2953 * representation) and cleaning things up as a result of its hosting
2954 * processing going away, in which case there is no remaining client-side
2955 * state to destroy so only the cleanup here is needed.
2957 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices,
2959 if (mResumedActivity == r) {
2960 mResumedActivity = null;
2962 if (mPausingActivity == r) {
2963 mPausingActivity = null;
2965 mService.clearFocusedActivity(r);
2967 r.configDestroy = false;
2968 r.frozenBeforeDestroy = false;
2971 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)");
2972 r.state = ActivityState.DESTROYED;
2973 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r);
2977 // Make sure this record is no longer in the pending finishes list.
2978 // This could happen, for example, if we are trimming activities
2979 // down to the max limit while they are still waiting to finish.
2980 mStackSupervisor.mFinishingActivities.remove(r);
2981 mStackSupervisor.mWaitingVisibleActivities.remove(r);
2982 r.waitingVisible = false;
2984 // Remove any pending results.
2985 if (r.finishing && r.pendingResults != null) {
2986 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) {
2987 PendingIntentRecord rec = apr.get();
2989 mService.cancelIntentSenderLocked(rec, false);
2992 r.pendingResults = null;
2995 if (cleanServices) {
2996 cleanUpActivityServicesLocked(r);
2999 // Get rid of any pending idle timeouts.
3000 removeTimeoutsForActivityLocked(r);
3001 if (getVisibleBehindActivity() == r) {
3002 mStackSupervisor.requestVisibleBehindLocked(r, false);
3006 private void removeTimeoutsForActivityLocked(ActivityRecord r) {
3007 mStackSupervisor.removeTimeoutsForActivityLocked(r);
3008 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r);
3009 mHandler.removeMessages(STOP_TIMEOUT_MSG, r);
3010 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r);
3011 r.finishLaunchTickingLocked();
3014 private void removeActivityFromHistoryLocked(ActivityRecord r) {
3015 mStackSupervisor.removeChildActivityContainers(r);
3016 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null);
3018 if (DEBUG_ADD_REMOVE) {
3019 RuntimeException here = new RuntimeException("here");
3020 here.fillInStackTrace();
3021 Slog.i(TAG, "Removing activity " + r + " from stack");
3023 r.takeFromHistory();
3024 removeTimeoutsForActivityLocked(r);
3025 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)");
3026 r.state = ActivityState.DESTROYED;
3027 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r);
3029 mWindowManager.removeAppToken(r.appToken);
3030 if (VALIDATE_TOKENS) {
3031 validateAppTokensLocked();
3033 final TaskRecord task = r.task;
3034 if (task != null && task.removeActivity(r)) {
3035 if (DEBUG_STACK) Slog.i(TAG,
3036 "removeActivityFromHistoryLocked: last activity removed from " + this);
3037 if (mStackSupervisor.isFrontStack(this) && task == topTask() &&
3038 task.isOverHomeStack()) {
3039 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo());
3043 cleanUpActivityServicesLocked(r);
3044 r.removeUriPermissionsLocked();
3048 * Perform clean-up of service connections in an activity record.
3050 final void cleanUpActivityServicesLocked(ActivityRecord r) {
3051 // Throw away any services that have been bound by this activity.
3052 if (r.connections != null) {
3053 Iterator<ConnectionRecord> it = r.connections.iterator();
3054 while (it.hasNext()) {
3055 ConnectionRecord c = it.next();
3056 mService.mServices.removeConnectionLocked(c, null, r);
3058 r.connections = null;
3062 final void scheduleDestroyActivities(ProcessRecord owner, String reason) {
3063 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG);
3064 msg.obj = new ScheduleDestroyArgs(owner, reason);
3065 mHandler.sendMessage(msg);
3068 final void destroyActivitiesLocked(ProcessRecord owner, String reason) {
3069 boolean lastIsOpaque = false;
3070 boolean activityRemoved = false;
3071 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3072 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
3073 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
3074 final ActivityRecord r = activities.get(activityNdx);
3079 lastIsOpaque = true;
3081 if (owner != null && r.app != owner) {
3084 if (!lastIsOpaque) {
3087 if (r.isDestroyable()) {
3088 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state
3089 + " resumed=" + mResumedActivity
3090 + " pausing=" + mPausingActivity + " for reason " + reason);
3091 if (destroyActivityLocked(r, true, reason)) {
3092 activityRemoved = true;
3097 if (activityRemoved) {
3098 mStackSupervisor.resumeTopActivitiesLocked();
3102 final boolean safelyDestroyActivityLocked(ActivityRecord r, String reason) {
3103 if (r.isDestroyable()) {
3104 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state
3105 + " resumed=" + mResumedActivity
3106 + " pausing=" + mPausingActivity + " for reason " + reason);
3107 return destroyActivityLocked(r, true, reason);
3112 final int releaseSomeActivitiesLocked(ProcessRecord app, ArraySet<TaskRecord> tasks,
3114 // Iterate over tasks starting at the back (oldest) first.
3115 if (DEBUG_RELEASE) Slog.d(TAG, "Trying to release some activities in " + app);
3116 int maxTasks = tasks.size() / 4;
3120 int numReleased = 0;
3121 for (int taskNdx = 0; taskNdx < mTaskHistory.size() && maxTasks > 0; taskNdx++) {
3122 final TaskRecord task = mTaskHistory.get(taskNdx);
3123 if (!tasks.contains(task)) {
3126 if (DEBUG_RELEASE) Slog.d(TAG, "Looking for activities to release in " + task);
3128 final ArrayList<ActivityRecord> activities = task.mActivities;
3129 for (int actNdx = 0; actNdx < activities.size(); actNdx++) {
3130 final ActivityRecord activity = activities.get(actNdx);
3131 if (activity.app == app && activity.isDestroyable()) {
3132 if (DEBUG_RELEASE) Slog.v(TAG, "Destroying " + activity
3133 + " in state " + activity.state + " resumed=" + mResumedActivity
3134 + " pausing=" + mPausingActivity + " for reason " + reason);
3135 destroyActivityLocked(activity, true, reason);
3136 if (activities.get(actNdx) != activity) {
3137 // Was removed from list, back up so we don't miss the next one.
3144 numReleased += curNum;
3146 if (mTaskHistory.get(taskNdx) != task) {
3147 // The entire task got removed, back up so we don't miss the next one.
3152 if (DEBUG_RELEASE) Slog.d(TAG, "Done releasing: did " + numReleased + " activities");
3157 * Destroy the current CLIENT SIDE instance of an activity. This may be
3158 * called both when actually finishing an activity, or when performing
3159 * a configuration switch where we destroy the current client-side object
3160 * but then create a new client-side object for this same HistoryRecord.
3162 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) {
3163 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v(
3164 TAG, "Removing activity from " + reason + ": token=" + r
3165 + ", app=" + (r.app != null ? r.app.processName : "(null)"));
3166 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY,
3167 r.userId, System.identityHashCode(r),
3168 r.task.taskId, r.shortComponentName, reason);
3170 boolean removedFromHistory = false;
3172 cleanUpActivityLocked(r, false, false);
3174 final boolean hadApp = r.app != null;
3177 if (removeFromApp) {
3178 r.app.activities.remove(r);
3179 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) {
3180 mService.mHeavyWeightProcess = null;
3181 mService.mHandler.sendEmptyMessage(
3182 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG);
3184 if (r.app.activities.isEmpty()) {
3185 // Update any services we are bound to that might care about whether
3186 // their client may have activities.
3187 mService.mServices.updateServiceConnectionActivitiesLocked(r.app);
3188 // No longer have activities, so update LRU list and oom adj.
3189 mService.updateLruProcessLocked(r.app, false, null);
3190 mService.updateOomAdjLocked();
3194 boolean skipDestroy = false;
3197 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r);
3198 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing,
3199 r.configChangeFlags);
3200 } catch (Exception e) {
3201 // We can just ignore exceptions here... if the process
3202 // has crashed, our death notification will clean things
3204 //Slog.w(TAG, "Exception thrown during finish", e);
3206 removeActivityFromHistoryLocked(r);
3207 removedFromHistory = true;
3212 r.nowVisible = false;
3214 // If the activity is finishing, we need to wait on removing it
3215 // from the list to give it a chance to do its cleanup. During
3216 // that time it may make calls back with its token so we need to
3217 // be able to find it on the list and so we don't want to remove
3218 // it from the list yet. Otherwise, we can just immediately put
3219 // it in the destroyed state since we are not removing it from the
3221 if (r.finishing && !skipDestroy) {
3222 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r
3223 + " (destroy requested)");
3224 r.state = ActivityState.DESTROYING;
3225 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r);
3226 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT);
3228 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)");
3229 r.state = ActivityState.DESTROYED;
3230 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r);
3234 // remove this record from the history.
3236 removeActivityFromHistoryLocked(r);
3237 removedFromHistory = true;
3239 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)");
3240 r.state = ActivityState.DESTROYED;
3241 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r);
3246 r.configChangeFlags = 0;
3248 if (!mLRUActivities.remove(r) && hadApp) {
3249 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list");
3252 return removedFromHistory;
3255 final void activityDestroyedLocked(IBinder token) {
3256 final long origId = Binder.clearCallingIdentity();
3258 ActivityRecord r = ActivityRecord.forToken(token);
3260 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r);
3262 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r);
3264 if (isInStackLocked(token) != null) {
3265 if (r.state == ActivityState.DESTROYING) {
3266 cleanUpActivityLocked(r, true, false);
3267 removeActivityFromHistoryLocked(r);
3270 mStackSupervisor.resumeTopActivitiesLocked();
3272 Binder.restoreCallingIdentity(origId);
3276 void releaseBackgroundResources() {
3277 if (hasVisibleBehindActivity() &&
3278 !mHandler.hasMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG)) {
3279 final ActivityRecord r = getVisibleBehindActivity();
3280 if (r == topRunningActivityLocked(null)) {
3281 // Don't release the top activity if it has requested to run behind the next
3285 if (DEBUG_STATES) Slog.d(TAG, "releaseBackgroundResources activtyDisplay=" +
3286 mActivityContainer.mActivityDisplay + " visibleBehind=" + r + " app=" + r.app +
3287 " thread=" + r.app.thread);
3288 if (r != null && r.app != null && r.app.thread != null) {
3290 r.app.thread.scheduleCancelVisibleBehind(r.appToken);
3291 } catch (RemoteException e) {
3293 mHandler.sendEmptyMessageDelayed(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG, 500);
3295 Slog.e(TAG, "releaseBackgroundResources: activity " + r + " no longer running");
3296 backgroundResourcesReleased();
3301 final void backgroundResourcesReleased() {
3302 mHandler.removeMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG);
3303 final ActivityRecord r = getVisibleBehindActivity();
3305 mStackSupervisor.mStoppingActivities.add(r);
3306 setVisibleBehindActivity(null);
3307 mStackSupervisor.scheduleIdleTimeoutLocked(null);
3309 mStackSupervisor.resumeTopActivitiesLocked();
3312 boolean hasVisibleBehindActivity() {
3313 return isAttached() && mActivityContainer.mActivityDisplay.hasVisibleBehindActivity();
3316 void setVisibleBehindActivity(ActivityRecord r) {
3318 mActivityContainer.mActivityDisplay.setVisibleBehindActivity(r);
3322 ActivityRecord getVisibleBehindActivity() {
3323 return isAttached() ? mActivityContainer.mActivityDisplay.mVisibleBehindActivity : null;
3326 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list,
3327 ProcessRecord app, String listName) {
3328 int i = list.size();
3329 if (DEBUG_CLEANUP) Slog.v(
3330 TAG, "Removing app " + app + " from list " + listName
3331 + " with " + i + " entries");
3334 ActivityRecord r = list.get(i);
3335 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r);
3337 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!");
3339 removeTimeoutsForActivityLocked(r);
3344 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) {
3345 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities");
3346 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app,
3347 "mStoppingActivities");
3348 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app,
3349 "mGoingToSleepActivities");
3350 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app,
3351 "mWaitingVisibleActivities");
3352 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app,
3353 "mFinishingActivities");
3355 boolean hasVisibleActivities = false;
3357 // Clean out the history list.
3358 int i = numActivities();
3359 if (DEBUG_CLEANUP) Slog.v(
3360 TAG, "Removing app " + app + " from history with " + i + " entries");
3361 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3362 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
3363 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
3364 final ActivityRecord r = activities.get(activityNdx);
3366 if (DEBUG_CLEANUP) Slog.v(
3367 TAG, "Record #" + i + " " + r + ": app=" + r.app);
3370 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) {
3371 // Don't currently have state for the activity, or
3372 // it is finishing -- always remove it.
3374 } else if (r.launchCount > 2 &&
3375 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) {
3376 // We have launched this activity too many times since it was
3377 // able to run, so give up and remove it.
3380 // The process may be gone, but the activity lives on!
3384 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) {
3385 RuntimeException here = new RuntimeException("here");
3386 here.fillInStackTrace();
3387 Slog.i(TAG, "Removing activity " + r + " from stack at " + i
3388 + ": haveState=" + r.haveState
3389 + " stateNotNeeded=" + r.stateNotNeeded
3390 + " finishing=" + r.finishing
3391 + " state=" + r.state, here);
3394 Slog.w(TAG, "Force removing " + r + ": app died, no saved state");
3395 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY,
3396 r.userId, System.identityHashCode(r),
3397 r.task.taskId, r.shortComponentName,
3398 "proc died without state saved");
3399 if (r.state == ActivityState.RESUMED) {
3400 mService.updateUsageStats(r, false);
3403 removeActivityFromHistoryLocked(r);
3406 // We have the current state for this activity, so
3407 // it can be restarted later when needed.
3408 if (localLOGV) Slog.v(
3409 TAG, "Keeping entry, setting app to null");
3411 hasVisibleActivities = true;
3413 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity "
3416 r.nowVisible = false;
3418 if (DEBUG_SAVED_STATE) Slog.i(TAG,
3419 "App died, clearing saved state of " + r);
3424 cleanUpActivityLocked(r, true, true);
3429 return hasVisibleActivities;
3432 final void updateTransitLocked(int transit, Bundle options) {
3433 if (options != null) {
3434 ActivityRecord r = topRunningActivityLocked(null);
3435 if (r != null && r.state != ActivityState.RESUMED) {
3436 r.updateOptionsLocked(options);
3438 ActivityOptions.abort(options);
3441 mWindowManager.prepareAppTransition(transit, false);
3444 void updateTaskMovement(TaskRecord task, boolean toFront) {
3445 if (task.isPersistable) {
3446 task.mLastTimeMoved = System.currentTimeMillis();
3447 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most
3448 // recently will be most negative, tasks sent to the bottom before that will be less
3449 // negative. Similarly for recent tasks moved to the top which will be most positive.
3451 task.mLastTimeMoved *= -1;
3456 void moveHomeStackTaskToTop(int homeStackTaskType) {
3457 final int top = mTaskHistory.size() - 1;
3458 for (int taskNdx = top; taskNdx >= 0; --taskNdx) {
3459 final TaskRecord task = mTaskHistory.get(taskNdx);
3460 if (task.taskType == homeStackTaskType) {
3461 if (DEBUG_TASKS || DEBUG_STACK)
3462 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task);
3463 mTaskHistory.remove(taskNdx);
3464 mTaskHistory.add(top, task);
3465 updateTaskMovement(task, true);
3466 mWindowManager.moveTaskToTop(task.taskId);
3472 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) {
3473 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr);
3475 final int numTasks = mTaskHistory.size();
3476 final int index = mTaskHistory.indexOf(tr);
3477 if (numTasks == 0 || index < 0) {
3479 if (reason != null &&
3480 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) {
3481 ActivityOptions.abort(options);
3483 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options);
3488 // Shift all activities with this task up to the top
3489 // of the stack, keeping them in the same internal order.
3490 insertTaskAtTop(tr);
3493 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr);
3494 if (reason != null &&
3495 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) {
3496 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false);
3497 ActivityRecord r = topRunningActivityLocked(null);
3499 mNoAnimActivities.add(r);
3501 ActivityOptions.abort(options);
3503 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options);
3506 mStackSupervisor.resumeTopActivitiesLocked();
3507 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId);
3509 if (VALIDATE_TOKENS) {
3510 validateAppTokensLocked();
3515 * Worker method for rearranging history stack. Implements the function of moving all
3516 * activities for a specific task (gathering them if disjoint) into a single group at the
3517 * bottom of the stack.
3519 * If a watcher is installed, the action is preflighted and the watcher has an opportunity
3520 * to premeptively cancel the move.
3522 * @param taskId The taskId to collect and move to the bottom.
3523 * @return Returns true if the move completed, false if not.
3525 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) {
3526 final TaskRecord tr = taskForIdLocked(taskId);
3528 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId);
3532 Slog.i(TAG, "moveTaskToBack: " + tr);
3534 mStackSupervisor.endLockTaskModeIfTaskEnding(tr);
3536 // If we have a watcher, preflight the move before committing to it. First check
3537 // for *other* available tasks, but if none are available, then try again allowing the
3538 // current task to be selected.
3539 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) {
3540 ActivityRecord next = topRunningActivityLocked(null, taskId);
3542 next = topRunningActivityLocked(null, 0);
3545 // ask watcher if this is allowed
3546 boolean moveOK = true;
3548 moveOK = mService.mController.activityResuming(next.packageName);
3549 } catch (RemoteException e) {
3550 mService.mController = null;
3551 Watchdog.getInstance().setActivityController(null);
3559 if (DEBUG_TRANSITION) Slog.v(TAG,
3560 "Prepare to back transition: task=" + taskId);
3562 mTaskHistory.remove(tr);
3563 mTaskHistory.add(0, tr);
3564 updateTaskMovement(tr, false);
3566 // There is an assumption that moving a task to the back moves it behind the home activity.
3567 // We make sure here that some activity in the stack will launch home.
3568 int numTasks = mTaskHistory.size();
3569 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) {
3570 final TaskRecord task = mTaskHistory.get(taskNdx);
3571 if (task.isOverHomeStack()) {
3575 // Set the last task before tr to go to home.
3576 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE);
3580 if (reason != null &&
3581 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) {
3582 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false);
3583 ActivityRecord r = topRunningActivityLocked(null);
3585 mNoAnimActivities.add(r);
3588 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false);
3590 mWindowManager.moveTaskToBottom(taskId);
3592 if (VALIDATE_TOKENS) {
3593 validateAppTokensLocked();
3596 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null;
3597 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) {
3598 if (!mService.mBooting && !mService.mBooted) {
3602 final int taskToReturnTo = tr.getTaskToReturnTo();
3603 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE);
3604 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null);
3607 mStackSupervisor.resumeTopActivitiesLocked();
3611 static final void logStartActivity(int tag, ActivityRecord r,
3613 final Uri data = r.intent.getData();
3614 final String strData = data != null ? data.toSafeString() : null;
3616 EventLog.writeEvent(tag,
3617 r.userId, System.identityHashCode(r), task.taskId,
3618 r.shortComponentName, r.intent.getAction(),
3619 r.intent.getType(), strData, r.intent.getFlags());
3623 * Make sure the given activity matches the current configuration. Returns
3624 * false if the activity had to be destroyed. Returns true if the
3625 * configuration is the same, or the activity will remain running as-is
3626 * for whatever reason. Ensures the HistoryRecord is updated with the
3627 * correct configuration and all other bookkeeping is handled.
3629 final boolean ensureActivityConfigurationLocked(ActivityRecord r,
3630 int globalChanges) {
3631 if (mConfigWillChange) {
3632 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3633 "Skipping config check (will change): " + r);
3637 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3638 "Ensuring correct configuration: " + r);
3640 // Short circuit: if the two configurations are the exact same
3641 // object (the common case), then there is nothing to do.
3642 Configuration newConfig = mService.mConfiguration;
3643 if (r.configuration == newConfig && !r.forceNewConfig) {
3644 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3645 "Configuration unchanged in " + r);
3649 // We don't worry about activities that are finishing.
3651 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3652 "Configuration doesn't matter in finishing " + r);
3653 r.stopFreezingScreenLocked(false);
3657 // Okay we now are going to make this activity have the new config.
3658 // But then we need to figure out how it needs to deal with that.
3659 Configuration oldConfig = r.configuration;
3660 r.configuration = newConfig;
3662 // Determine what has changed. May be nothing, if this is a config
3663 // that has come back from the app after going idle. In that case
3664 // we just want to leave the official config object now in the
3665 // activity and do nothing else.
3666 final int changes = oldConfig.diff(newConfig);
3667 if (changes == 0 && !r.forceNewConfig) {
3668 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3669 "Configuration no differences in " + r);
3673 // If the activity isn't currently running, just leave the new
3674 // configuration and it will pick that up next time it starts.
3675 if (r.app == null || r.app.thread == null) {
3676 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3677 "Configuration doesn't matter not running " + r);
3678 r.stopFreezingScreenLocked(false);
3679 r.forceNewConfig = false;
3683 // Figure out how to handle the changes between the configurations.
3684 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) {
3685 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x"
3686 + Integer.toHexString(changes) + ", handles=0x"
3687 + Integer.toHexString(r.info.getRealConfigChanged())
3688 + ", newConfig=" + newConfig);
3690 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) {
3691 // Aha, the activity isn't handling the change, so DIE DIE DIE.
3692 r.configChangeFlags |= changes;
3693 r.startFreezingScreenLocked(r.app, globalChanges);
3694 r.forceNewConfig = false;
3695 if (r.app == null || r.app.thread == null) {
3696 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3697 "Config is destroying non-running " + r);
3698 destroyActivityLocked(r, true, "config");
3699 } else if (r.state == ActivityState.PAUSING) {
3700 // A little annoying: we are waiting for this activity to
3701 // finish pausing. Let's not do anything now, but just
3702 // flag that it needs to be restarted when done pausing.
3703 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3704 "Config is skipping already pausing " + r);
3705 r.configDestroy = true;
3707 } else if (r.state == ActivityState.RESUMED) {
3708 // Try to optimize this case: the configuration is changing
3709 // and we need to restart the top, resumed activity.
3710 // Instead of doing the normal handshaking, just say
3712 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3713 "Config is relaunching resumed " + r);
3714 relaunchActivityLocked(r, r.configChangeFlags, true);
3715 r.configChangeFlags = 0;
3717 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG,
3718 "Config is relaunching non-resumed " + r);
3719 relaunchActivityLocked(r, r.configChangeFlags, false);
3720 r.configChangeFlags = 0;
3723 // All done... tell the caller we weren't able to keep this
3728 // Default case: the activity can handle this new configuration, so
3729 // hand it over. Note that we don't need to give it the new
3730 // configuration, since we always send configuration changes to all
3731 // process when they happen so it can just use whatever configuration
3733 if (r.app != null && r.app.thread != null) {
3735 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r);
3736 r.app.thread.scheduleActivityConfigurationChanged(r.appToken);
3737 } catch (RemoteException e) {
3738 // If process died, whatever.
3741 r.stopFreezingScreenLocked(false);
3746 private boolean relaunchActivityLocked(ActivityRecord r,
3747 int changes, boolean andResume) {
3748 List<ResultInfo> results = null;
3749 List<ReferrerIntent> newIntents = null;
3751 results = r.results;
3752 newIntents = r.newIntents;
3754 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r
3755 + " with results=" + results + " newIntents=" + newIntents
3756 + " andResume=" + andResume);
3757 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY
3758 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r),
3759 r.task.taskId, r.shortComponentName);
3761 r.startFreezingScreenLocked(r.app, 0);
3763 mStackSupervisor.removeChildActivityContainers(r);
3766 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG,
3767 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ")
3769 r.forceNewConfig = false;
3770 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents,
3771 changes, !andResume, new Configuration(mService.mConfiguration));
3772 // Note: don't need to call pauseIfSleepingLocked() here, because
3773 // the caller will only pass in 'andResume' if this activity is
3774 // currently resumed, which implies we aren't sleeping.
3775 } catch (RemoteException e) {
3776 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e);
3781 r.newIntents = null;
3782 r.state = ActivityState.RESUMED;
3784 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r);
3785 r.state = ActivityState.PAUSED;
3791 boolean willActivityBeVisibleLocked(IBinder token) {
3792 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3793 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
3794 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
3795 final ActivityRecord r = activities.get(activityNdx);
3796 if (r.appToken == token) {
3799 if (r.fullscreen && !r.finishing) {
3804 final ActivityRecord r = ActivityRecord.forToken(token);
3808 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false,"
3809 + " would have returned true for r=" + r);
3810 return !r.finishing;
3813 void closeSystemDialogsLocked() {
3814 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3815 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
3816 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
3817 final ActivityRecord r = activities.get(activityNdx);
3818 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) {
3819 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true);
3825 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) {
3826 boolean didSomething = false;
3827 TaskRecord lastTask = null;
3828 ComponentName homeActivity = null;
3829 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3830 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
3831 int numActivities = activities.size();
3832 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) {
3833 ActivityRecord r = activities.get(activityNdx);
3834 final boolean samePackage = r.packageName.equals(name)
3835 || (name == null && r.userId == userId);
3836 if ((userId == UserHandle.USER_ALL || r.userId == userId)
3837 && (samePackage || r.task == lastTask)
3838 && (r.app == null || evenPersistent || !r.app.persistent)) {
3841 // If this activity is just finishing, then it is not
3842 // interesting as far as something to stop.
3847 if (r.isHomeActivity()) {
3848 if (homeActivity != null && homeActivity.equals(r.realActivity)) {
3849 Slog.i(TAG, "Skip force-stop again " + r);
3852 homeActivity = r.realActivity;
3855 didSomething = true;
3856 Slog.i(TAG, " Force finishing activity 3 " + r);
3858 if (r.app != null) {
3859 r.app.removed = true;
3864 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop",
3866 // r has been deleted from mActivities, accommodate.
3873 return didSomething;
3876 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) {
3877 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3878 final TaskRecord task = mTaskHistory.get(taskNdx);
3879 ActivityRecord r = null;
3880 ActivityRecord top = null;
3881 int numActivities = 0;
3883 final ArrayList<ActivityRecord> activities = task.mActivities;
3884 if (activities.isEmpty()) {
3887 if (!allowed && !task.isHomeTask() && task.effectiveUid != callingUid) {
3890 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
3891 r = activities.get(activityNdx);
3893 // Initialize state for next task if needed.
3894 if (top == null || (top.state == ActivityState.INITIALIZING)) {
3896 numActivities = numRunning = 0;
3899 // Add 'r' into the current task.
3901 if (r.app != null && r.app.thread != null) {
3905 if (localLOGV) Slog.v(
3906 TAG, r.intent.getComponent().flattenToShortString()
3907 + ": task=" + r.task);
3910 RunningTaskInfo ci = new RunningTaskInfo();
3911 ci.id = task.taskId;
3912 ci.baseActivity = r.intent.getComponent();
3913 ci.topActivity = top.intent.getComponent();
3914 ci.lastActiveTime = task.lastActiveTime;
3916 if (top.task != null) {
3917 ci.description = top.task.lastDescription;
3919 ci.numActivities = numActivities;
3920 ci.numRunning = numRunning;
3921 //System.out.println(
3922 // "#" + maxNum + ": " + " descr=" + ci.description);
3927 public void unhandledBackLocked() {
3928 final int top = mTaskHistory.size() - 1;
3929 if (DEBUG_SWITCH) Slog.d(
3930 TAG, "Performing unhandledBack(): top activity at " + top);
3932 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities;
3933 int activityTop = activities.size() - 1;
3934 if (activityTop > 0) {
3935 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null,
3936 "unhandled-back", true);
3942 * Reset local parameters because an app's activity died.
3943 * @param app The app of the activity that died.
3944 * @return result from removeHistoryRecordsForAppLocked.
3946 boolean handleAppDiedLocked(ProcessRecord app) {
3947 if (mPausingActivity != null && mPausingActivity.app == app) {
3948 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG,
3949 "App died while pausing: " + mPausingActivity);
3950 mPausingActivity = null;
3952 if (mLastPausedActivity != null && mLastPausedActivity.app == app) {
3953 mLastPausedActivity = null;
3954 mLastNoHistoryActivity = null;
3957 return removeHistoryRecordsForAppLocked(app);
3960 void handleAppCrashLocked(ProcessRecord app) {
3961 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3962 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
3963 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
3964 final ActivityRecord r = activities.get(activityNdx);
3966 Slog.w(TAG, " Force finishing activity 4 "
3967 + r.intent.getComponent().flattenToShortString());
3968 // Force the destroy to skip right to removal.
3970 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false);
3976 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll,
3977 boolean dumpClient, String dumpPackage, boolean needSep, String header) {
3978 boolean printed = false;
3979 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3980 final TaskRecord task = mTaskHistory.get(taskNdx);
3981 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw,
3982 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll,
3983 dumpClient, dumpPackage, needSep, header,
3984 " Task id #" + task.taskId);
3992 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) {
3993 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>();
3995 if ("all".equals(name)) {
3996 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
3997 activities.addAll(mTaskHistory.get(taskNdx).mActivities);
3999 } else if ("top".equals(name)) {
4000 final int top = mTaskHistory.size() - 1;
4002 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities;
4003 int listTop = list.size() - 1;
4005 activities.add(list.get(listTop));
4009 ItemMatcher matcher = new ItemMatcher();
4010 matcher.build(name);
4012 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
4013 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) {
4014 if (matcher.match(r1, r1.intent.getComponent())) {
4024 ActivityRecord restartPackage(String packageName) {
4025 ActivityRecord starting = topRunningActivityLocked(null);
4027 // All activities that came from the package must be
4028 // restarted as if there was a config change.
4029 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
4030 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
4031 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
4032 final ActivityRecord a = activities.get(activityNdx);
4033 if (a.info.packageName.equals(packageName)) {
4034 a.forceNewConfig = true;
4035 if (starting != null && a == starting && a.visible) {
4036 a.startFreezingScreenLocked(starting.app,
4037 ActivityInfo.CONFIG_SCREEN_LAYOUT);
4046 void removeTask(TaskRecord task) {
4047 mStackSupervisor.endLockTaskModeIfTaskEnding(task);
4048 mWindowManager.removeTask(task.taskId);
4049 final ActivityRecord r = mResumedActivity;
4050 if (r != null && r.task == task) {
4051 mResumedActivity = null;
4054 final int taskNdx = mTaskHistory.indexOf(task);
4055 final int topTaskNdx = mTaskHistory.size() - 1;
4056 if (task.isOverHomeStack() && taskNdx < topTaskNdx) {
4057 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1);
4058 if (!nextTask.isOverHomeStack()) {
4059 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE);
4062 mTaskHistory.remove(task);
4063 updateTaskMovement(task, true);
4065 if (task.mActivities.isEmpty()) {
4066 final boolean isVoiceSession = task.voiceSession != null;
4067 if (isVoiceSession) {
4069 task.voiceSession.taskFinished(task.intent, task.taskId);
4070 } catch (RemoteException e) {
4073 if (task.autoRemoveFromRecents() || isVoiceSession) {
4074 // Task creator asked to remove this when done, or this task was a voice
4075 // interaction, so it should not remain on the recent tasks list.
4076 mService.mRecentTasks.remove(task);
4077 task.removedFromRecents();
4081 if (mTaskHistory.isEmpty()) {
4082 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this);
4083 if (isOnHomeDisplay()) {
4084 mStackSupervisor.moveHomeStack(!isHomeStack());
4086 if (mStacks != null) {
4087 mStacks.remove(this);
4088 mStacks.add(0, this);
4090 mActivityContainer.onTaskListEmptyLocked();
4094 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent,
4095 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor,
4097 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession,
4099 addTask(task, toTop, false);
4103 ArrayList<TaskRecord> getAllTasks() {
4104 return new ArrayList<TaskRecord>(mTaskHistory);
4107 void addTask(final TaskRecord task, final boolean toTop, boolean moving) {
4110 insertTaskAtTop(task);
4112 mTaskHistory.add(0, task);
4113 updateTaskMovement(task, false);
4115 if (!moving && task.voiceSession != null) {
4117 task.voiceSession.taskStarted(task.intent, task.taskId);
4118 } catch (RemoteException e) {
4123 public int getStackId() {
4128 public String toString() {
4129 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this))
4130 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}";