ActivityStack.java revision 1909125ebab026fff1836a93b9b14ea62f404d22
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17package com.android.server.am; 18 19import static com.android.server.am.ActivityManagerService.TAG; 20import static com.android.server.am.ActivityManagerService.localLOGV; 21import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP; 22import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION; 23import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE; 24import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS; 25import static com.android.server.am.ActivityManagerService.DEBUG_STACK; 26import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH; 27import static com.android.server.am.ActivityManagerService.DEBUG_TASKS; 28import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION; 29import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING; 30import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY; 31import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS; 32 33import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 34import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 35import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 37import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 38 39import android.os.Trace; 40import com.android.internal.os.BatteryStatsImpl; 41import com.android.internal.util.Objects; 42import com.android.server.Watchdog; 43import com.android.server.am.ActivityManagerService.ItemMatcher; 44import com.android.server.wm.AppTransition; 45import com.android.server.wm.TaskGroup; 46import com.android.server.wm.WindowManagerService; 47 48import android.app.Activity; 49import android.app.ActivityManager; 50import android.app.ActivityOptions; 51import android.app.AppGlobals; 52import android.app.IActivityController; 53import android.app.IThumbnailReceiver; 54import android.app.ResultInfo; 55import android.app.ActivityManager.RunningTaskInfo; 56import android.content.ComponentName; 57import android.content.Context; 58import android.content.Intent; 59import android.content.pm.ActivityInfo; 60import android.content.pm.PackageManager; 61import android.content.res.Configuration; 62import android.content.res.Resources; 63import android.graphics.Bitmap; 64import android.graphics.Bitmap.Config; 65import android.net.Uri; 66import android.os.Binder; 67import android.os.Bundle; 68import android.os.Handler; 69import android.os.IBinder; 70import android.os.Looper; 71import android.os.Message; 72import android.os.RemoteException; 73import android.os.SystemClock; 74import android.os.UserHandle; 75import android.util.EventLog; 76import android.util.Slog; 77import android.view.Display; 78 79import java.io.FileDescriptor; 80import java.io.PrintWriter; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.Iterator; 84import java.util.List; 85 86/** 87 * State and management of a single stack of activities. 88 */ 89final class ActivityStack { 90 91 // Ticks during which we check progress while waiting for an app to launch. 92 static final int LAUNCH_TICK = 500; 93 94 // How long we wait until giving up on the last activity to pause. This 95 // is short because it directly impacts the responsiveness of starting the 96 // next activity. 97 static final int PAUSE_TIMEOUT = 500; 98 99 // How long we wait for the activity to tell us it has stopped before 100 // giving up. This is a good amount of time because we really need this 101 // from the application in order to get its saved state. 102 static final int STOP_TIMEOUT = 10*1000; 103 104 // How long we wait until giving up on an activity telling us it has 105 // finished destroying itself. 106 static final int DESTROY_TIMEOUT = 10*1000; 107 108 // How long until we reset a task when the user returns to it. Currently 109 // disabled. 110 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 111 112 // How long between activity launches that we consider safe to not warn 113 // the user about an unexpected activity being launched on top. 114 static final long START_WARN_TIME = 5*1000; 115 116 // Set to false to disable the preview that is shown while a new activity 117 // is being started. 118 static final boolean SHOW_APP_STARTING_PREVIEW = true; 119 120 // How long to wait for all background Activities to redraw following a call to 121 // convertToTranslucent(). 122 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 123 124 static final boolean SCREENSHOT_FORCE_565 = ActivityManager 125 .isLowRamDeviceStatic() ? true : false; 126 127 enum ActivityState { 128 INITIALIZING, 129 RESUMED, 130 PAUSING, 131 PAUSED, 132 STOPPING, 133 STOPPED, 134 FINISHING, 135 DESTROYING, 136 DESTROYED 137 } 138 139 final ActivityManagerService mService; 140 final WindowManagerService mWindowManager; 141 142 final Context mContext; 143 144 /** 145 * The back history of all previous (and possibly still 146 * running) activities. It contains #TaskRecord objects. 147 */ 148 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 149 150 /** 151 * Used for validating app tokens with window manager. 152 */ 153 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 154 155 /** 156 * List of running activities, sorted by recent usage. 157 * The first entry in the list is the least recently used. 158 * It contains HistoryRecord objects. 159 */ 160 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 161 162 /** 163 * Animations that for the current transition have requested not to 164 * be considered for the transition animation. 165 */ 166 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * When we are in the process of pausing an activity, before starting the 170 * next one, this variable holds the activity that is currently being paused. 171 */ 172 ActivityRecord mPausingActivity = null; 173 174 /** 175 * This is the last activity that we put into the paused state. This is 176 * used to determine if we need to do an activity transition while sleeping, 177 * when we normally hold the top activity paused. 178 */ 179 ActivityRecord mLastPausedActivity = null; 180 181 /** 182 * Activities that specify No History must be removed once the user navigates away from them. 183 * If the device goes to sleep with such an activity in the paused state then we save it here 184 * and finish it later if another activity replaces it on wakeup. 185 */ 186 ActivityRecord mLastNoHistoryActivity = null; 187 188 /** 189 * Current activity that is resumed, or null if there is none. 190 */ 191 ActivityRecord mResumedActivity = null; 192 193 /** 194 * This is the last activity that has been started. It is only used to 195 * identify when multiple activities are started at once so that the user 196 * can be warned they may not be in the activity they think they are. 197 */ 198 ActivityRecord mLastStartedActivity = null; 199 200 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 201 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 202 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 203 // Activity in mTranslucentActivityWaiting is notified via 204 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 205 // background activity being drawn then the same call will be made with a true value. 206 ActivityRecord mTranslucentActivityWaiting = null; 207 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 208 new ArrayList<ActivityRecord>(); 209 210 /** 211 * Set when we know we are going to be calling updateConfiguration() 212 * soon, so want to skip intermediate config checks. 213 */ 214 boolean mConfigWillChange; 215 216 long mLaunchStartTime = 0; 217 long mFullyDrawnStartTime = 0; 218 219 /** 220 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 221 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 222 */ 223 private ActivityRecord mLastScreenshotActivity = null; 224 private Bitmap mLastScreenshotBitmap = null; 225 226 int mThumbnailWidth = -1; 227 int mThumbnailHeight = -1; 228 229 int mCurrentUser; 230 231 final int mStackId; 232 233 /** Run all ActivityStacks through this */ 234 final ActivityStackSupervisor mStackSupervisor; 235 236 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 237 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 238 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 239 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 240 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 241 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 242 243 static class ScheduleDestroyArgs { 244 final ProcessRecord mOwner; 245 final boolean mOomAdj; 246 final String mReason; 247 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 248 mOwner = owner; 249 mOomAdj = oomAdj; 250 mReason = reason; 251 } 252 } 253 254 final Handler mHandler; 255 256 final class ActivityStackHandler extends Handler { 257 //public Handler() { 258 // if (localLOGV) Slog.v(TAG, "Handler started!"); 259 //} 260 ActivityStackHandler(Looper looper) { 261 super(looper); 262 } 263 264 @Override 265 public void handleMessage(Message msg) { 266 switch (msg.what) { 267 case PAUSE_TIMEOUT_MSG: { 268 ActivityRecord r = (ActivityRecord)msg.obj; 269 // We don't at this point know if the activity is fullscreen, 270 // so we need to be conservative and assume it isn't. 271 Slog.w(TAG, "Activity pause timeout for " + r); 272 synchronized (mService) { 273 if (r.app != null) { 274 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 275 } 276 activityPausedLocked(r.appToken, true); 277 } 278 } break; 279 case LAUNCH_TICK_MSG: { 280 ActivityRecord r = (ActivityRecord)msg.obj; 281 synchronized (mService) { 282 if (r.continueLaunchTickingLocked()) { 283 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 284 } 285 } 286 } break; 287 case DESTROY_TIMEOUT_MSG: { 288 ActivityRecord r = (ActivityRecord)msg.obj; 289 // We don't at this point know if the activity is fullscreen, 290 // so we need to be conservative and assume it isn't. 291 Slog.w(TAG, "Activity destroy timeout for " + r); 292 synchronized (mService) { 293 activityDestroyedLocked(r != null ? r.appToken : null); 294 } 295 } break; 296 case STOP_TIMEOUT_MSG: { 297 ActivityRecord r = (ActivityRecord)msg.obj; 298 // We don't at this point know if the activity is fullscreen, 299 // so we need to be conservative and assume it isn't. 300 Slog.w(TAG, "Activity stop timeout for " + r); 301 synchronized (mService) { 302 if (r.isInHistory()) { 303 activityStoppedLocked(r, null, null, null); 304 } 305 } 306 } break; 307 case DESTROY_ACTIVITIES_MSG: { 308 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 309 synchronized (mService) { 310 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 311 } 312 } break; 313 case TRANSLUCENT_TIMEOUT_MSG: { 314 synchronized (mService) { 315 notifyActivityDrawnLocked(null); 316 } 317 } break; 318 } 319 } 320 } 321 322 private int numActivities() { 323 int count = 0; 324 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 325 count += mTaskHistory.get(taskNdx).mActivities.size(); 326 } 327 return count; 328 } 329 330 ActivityStack(ActivityManagerService service, Context context, Looper looper, int stackId) { 331 mHandler = new ActivityStackHandler(looper); 332 mService = service; 333 mWindowManager = service.mWindowManager; 334 mStackSupervisor = service.mStackSupervisor; 335 mContext = context; 336 mStackId = stackId; 337 mCurrentUser = service.mCurrentUserId; 338 } 339 340 boolean okToShow(ActivityRecord r) { 341 return r.userId == mCurrentUser 342 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 343 } 344 345 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 346 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 347 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 348 if (r != null) { 349 return r; 350 } 351 } 352 return null; 353 } 354 355 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 356 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 357 final TaskRecord task = mTaskHistory.get(taskNdx); 358 final ArrayList<ActivityRecord> activities = task.mActivities; 359 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 360 ActivityRecord r = activities.get(activityNdx); 361 if (!r.finishing && !r.delayedResume && r != notTop && okToShow(r)) { 362 return r; 363 } 364 } 365 } 366 return null; 367 } 368 369 /** 370 * This is a simplified version of topRunningActivityLocked that provides a number of 371 * optional skip-over modes. It is intended for use with the ActivityController hook only. 372 * 373 * @param token If non-null, any history records matching this token will be skipped. 374 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 375 * 376 * @return Returns the HistoryRecord of the next activity on the stack. 377 */ 378 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 379 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 380 TaskRecord task = mTaskHistory.get(taskNdx); 381 if (task.taskId == taskId) { 382 continue; 383 } 384 ArrayList<ActivityRecord> activities = task.mActivities; 385 for (int i = activities.size() - 1; i >= 0; --i) { 386 final ActivityRecord r = activities.get(i); 387 // Note: the taskId check depends on real taskId fields being non-zero 388 if (!r.finishing && (token != r.appToken) && okToShow(r)) { 389 return r; 390 } 391 } 392 } 393 return null; 394 } 395 396 final ActivityRecord topActivity() { 397 // Iterate to find the first non-empty task stack. Note that this code can 398 // be simplified once we stop storing tasks with empty mActivities lists. 399 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 400 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 401 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 402 return activities.get(activityNdx); 403 } 404 } 405 return null; 406 } 407 408 final TaskRecord topTask() { 409 final int size = mTaskHistory.size(); 410 if (size > 0) { 411 return mTaskHistory.get(size - 1); 412 } 413 return null; 414 } 415 416 TaskRecord taskForIdLocked(int id) { 417 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 418 final TaskRecord task = mTaskHistory.get(taskNdx); 419 if (task.taskId == id) { 420 return task; 421 } 422 } 423 return null; 424 } 425 426 ActivityRecord isInStackLocked(IBinder token) { 427 final ActivityRecord r = ActivityRecord.forToken(token); 428 if (r != null) { 429 final TaskRecord task = r.task; 430 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 431 if (task.stack != this) Slog.w(TAG, 432 "Illegal state! task does not point to stack it is in."); 433 return r; 434 } 435 } 436 return null; 437 } 438 439 boolean containsApp(ProcessRecord app) { 440 if (app == null) { 441 return false; 442 } 443 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 444 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 445 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 446 final ActivityRecord r = activities.get(activityNdx); 447 if (r.finishing) { 448 continue; 449 } 450 if (r.app == app) { 451 return true; 452 } 453 } 454 } 455 return false; 456 } 457 458 final boolean updateLRUListLocked(ActivityRecord r) { 459 final boolean hadit = mLRUActivities.remove(r); 460 mLRUActivities.add(r); 461 return hadit; 462 } 463 464 final boolean isHomeStack() { 465 return mStackId == HOME_STACK_ID; 466 } 467 468 /** 469 * Returns the top activity in any existing task matching the given 470 * Intent. Returns null if no such task is found. 471 */ 472 ActivityRecord findTaskLocked(ActivityRecord target) { 473 Intent intent = target.intent; 474 ActivityInfo info = target.info; 475 ComponentName cls = intent.getComponent(); 476 if (info.targetActivity != null) { 477 cls = new ComponentName(info.packageName, info.targetActivity); 478 } 479 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 480 481 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 482 final TaskRecord task = mTaskHistory.get(taskNdx); 483 if (task.userId != userId) { 484 // Looking for a different task. 485 continue; 486 } 487 final ActivityRecord r = task.getTopActivity(); 488 if (r == null || r.finishing || r.userId != userId || 489 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 490 continue; 491 } 492 493 //Slog.i(TAG, "Comparing existing cls=" + r.task.intent.getComponent().flattenToShortString() 494 // + "/aff=" + r.task.affinity + " to new cls=" 495 // + intent.getComponent().flattenToShortString() + "/aff=" + taskAffinity); 496 if (task.affinity != null) { 497 if (task.affinity.equals(info.taskAffinity)) { 498 //Slog.i(TAG, "Found matching affinity!"); 499 return r; 500 } 501 } else if (task.intent != null && task.intent.getComponent().equals(cls)) { 502 //Slog.i(TAG, "Found matching class!"); 503 //dump(); 504 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 505 return r; 506 } else if (task.affinityIntent != null 507 && task.affinityIntent.getComponent().equals(cls)) { 508 //Slog.i(TAG, "Found matching class!"); 509 //dump(); 510 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 511 return r; 512 } 513 } 514 515 return null; 516 } 517 518 /** 519 * Returns the first activity (starting from the top of the stack) that 520 * is the same as the given activity. Returns null if no such activity 521 * is found. 522 */ 523 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 524 ComponentName cls = intent.getComponent(); 525 if (info.targetActivity != null) { 526 cls = new ComponentName(info.packageName, info.targetActivity); 527 } 528 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 529 530 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 531 TaskRecord task = mTaskHistory.get(taskNdx); 532 if (task.userId != mCurrentUser) { 533 return null; 534 } 535 final ArrayList<ActivityRecord> activities = task.mActivities; 536 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 537 ActivityRecord r = activities.get(activityNdx); 538 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 539 //Slog.i(TAG, "Found matching class!"); 540 //dump(); 541 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 542 return r; 543 } 544 } 545 } 546 547 return null; 548 } 549 550 /* 551 * Move the activities around in the stack to bring a user to the foreground. 552 * @return whether there are any activities for the specified user. 553 */ 554 final boolean switchUserLocked(int userId) { 555 if (VALIDATE_TOKENS) { 556 validateAppTokensLocked(); 557 } 558 if (mCurrentUser == userId) { 559 return true; 560 } 561 mCurrentUser = userId; 562 563 // Move userId's tasks to the top. 564 boolean haveActivities = false; 565 int index = mTaskHistory.size(); 566 for (int i = 0; i < index; ++i) { 567 TaskRecord task = mTaskHistory.get(i); 568 if (task.userId == userId) { 569 haveActivities = true; 570 mTaskHistory.remove(i); 571 mTaskHistory.add(task); 572 --index; 573 } 574 } 575 576 return haveActivities; 577 } 578 579 void minimalResumeActivityLocked(ActivityRecord r) { 580 r.state = ActivityState.RESUMED; 581 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 582 + " (starting new instance)"); 583 r.stopped = false; 584 mResumedActivity = r; 585 r.task.touchActiveTime(); 586 mService.addRecentTaskLocked(r.task); 587 completeResumeLocked(r); 588 mStackSupervisor.checkReadyForSleepLocked(); 589 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 590 } 591 592 private void startLaunchTraces() { 593 if (mFullyDrawnStartTime != 0) { 594 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 595 } 596 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 597 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 598 } 599 600 private void stopFullyDrawnTraceIfNeeded() { 601 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 602 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 603 mFullyDrawnStartTime = 0; 604 } 605 } 606 607 void setLaunchTime(ActivityRecord r) { 608 if (r.displayStartTime == 0) { 609 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 610 if (mLaunchStartTime == 0) { 611 startLaunchTraces(); 612 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 613 } 614 } else if (mLaunchStartTime == 0) { 615 startLaunchTraces(); 616 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 617 } 618 } 619 620 void clearLaunchTime(ActivityRecord r) { 621 // Make sure that there is no activity waiting for this to launch. 622 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 623 r.displayStartTime = r.fullyDrawnStartTime = 0; 624 } else { 625 mStackSupervisor.removeTimeoutsForActivityLocked(r); 626 mStackSupervisor.scheduleIdleTimeoutLocked(r); 627 } 628 } 629 630 void awakeFromSleepingLocked() { 631 // Ensure activities are no longer sleeping. 632 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 633 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 634 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 635 activities.get(activityNdx).setSleeping(false); 636 } 637 } 638 } 639 640 /** 641 * @return true if something must be done before going to sleep. 642 */ 643 boolean checkReadyForSleepLocked() { 644 if (mResumedActivity != null) { 645 // Still have something resumed; can't sleep until it is paused. 646 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 647 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 648 startPausingLocked(false, true); 649 return true; 650 } 651 if (mPausingActivity != null) { 652 // Still waiting for something to pause; can't sleep yet. 653 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 654 return true; 655 } 656 657 return false; 658 } 659 660 void goToSleep() { 661 ensureActivitiesVisibleLocked(null, 0); 662 663 // Make sure any stopped but visible activities are now sleeping. 664 // This ensures that the activity's onStop() is called. 665 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 666 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 667 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 668 final ActivityRecord r = activities.get(activityNdx); 669 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 670 r.setSleeping(true); 671 } 672 } 673 } 674 } 675 676 public final Bitmap screenshotActivities(ActivityRecord who) { 677 if (who.noDisplay) { 678 return null; 679 } 680 681 Resources res = mService.mContext.getResources(); 682 int w = mThumbnailWidth; 683 int h = mThumbnailHeight; 684 if (w < 0) { 685 mThumbnailWidth = w = 686 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 687 mThumbnailHeight = h = 688 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 689 } 690 691 if (w > 0) { 692 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 693 || mLastScreenshotBitmap.getWidth() != w 694 || mLastScreenshotBitmap.getHeight() != h) { 695 mLastScreenshotActivity = who; 696 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 697 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 698 } 699 if (mLastScreenshotBitmap != null) { 700 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 701 } 702 } 703 return null; 704 } 705 706 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 707 if (mPausingActivity != null) { 708 Slog.e(TAG, "Trying to pause when pause is already pending for " 709 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 710 } 711 ActivityRecord prev = mResumedActivity; 712 if (prev == null) { 713 Slog.e(TAG, "Trying to pause when nothing is resumed", 714 new RuntimeException("here").fillInStackTrace()); 715 mStackSupervisor.resumeTopActivitiesLocked(); 716 return; 717 } 718 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 719 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 720 mResumedActivity = null; 721 mPausingActivity = prev; 722 mLastPausedActivity = prev; 723 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 724 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 725 prev.state = ActivityState.PAUSING; 726 prev.task.touchActiveTime(); 727 clearLaunchTime(prev); 728 prev.updateThumbnail(screenshotActivities(prev), null); 729 stopFullyDrawnTraceIfNeeded(); 730 731 mService.updateCpuStats(); 732 733 if (prev.app != null && prev.app.thread != null) { 734 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 735 try { 736 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 737 prev.userId, System.identityHashCode(prev), 738 prev.shortComponentName); 739 mService.updateUsageStats(prev, false); 740 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 741 userLeaving, prev.configChangeFlags); 742 } catch (Exception e) { 743 // Ignore exception, if process died other code will cleanup. 744 Slog.w(TAG, "Exception thrown during pause", e); 745 mPausingActivity = null; 746 mLastPausedActivity = null; 747 mLastNoHistoryActivity = null; 748 } 749 } else { 750 mPausingActivity = null; 751 mLastPausedActivity = null; 752 mLastNoHistoryActivity = null; 753 } 754 755 // If we are not going to sleep, we want to ensure the device is 756 // awake until the next activity is started. 757 if (!mService.isSleepingOrShuttingDown()) { 758 mStackSupervisor.acquireLaunchWakelock(); 759 } 760 761 if (mPausingActivity != null) { 762 // Have the window manager pause its key dispatching until the new 763 // activity has started. If we're pausing the activity just because 764 // the screen is being turned off and the UI is sleeping, don't interrupt 765 // key dispatch; the same activity will pick it up again on wakeup. 766 if (!uiSleeping) { 767 prev.pauseKeyDispatchingLocked(); 768 } else { 769 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 770 } 771 772 // Schedule a pause timeout in case the app doesn't respond. 773 // We don't give it much time because this directly impacts the 774 // responsiveness seen by the user. 775 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 776 msg.obj = prev; 777 prev.pauseTime = SystemClock.uptimeMillis(); 778 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 779 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 780 } else { 781 // This activity failed to schedule the 782 // pause, so just treat it as being paused now. 783 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 784 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 785 } 786 } 787 788 final void activityPausedLocked(IBinder token, boolean timeout) { 789 if (DEBUG_PAUSE) Slog.v( 790 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 791 792 final ActivityRecord r = isInStackLocked(token); 793 if (r != null) { 794 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 795 if (mPausingActivity == r) { 796 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 797 + (timeout ? " (due to timeout)" : " (pause complete)")); 798 r.state = ActivityState.PAUSED; 799 completePauseLocked(); 800 } else { 801 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 802 r.userId, System.identityHashCode(r), r.shortComponentName, 803 mPausingActivity != null 804 ? mPausingActivity.shortComponentName : "(none)"); 805 } 806 } 807 } 808 809 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 810 CharSequence description) { 811 if (r.state != ActivityState.STOPPING) { 812 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 813 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 814 return; 815 } 816 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 817 if (icicle != null) { 818 // If icicle is null, this is happening due to a timeout, so we 819 // haven't really saved the state. 820 r.icicle = icicle; 821 r.haveState = true; 822 r.launchCount = 0; 823 r.updateThumbnail(thumbnail, description); 824 } 825 if (!r.stopped) { 826 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 827 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 828 r.stopped = true; 829 r.state = ActivityState.STOPPED; 830 if (r.finishing) { 831 r.clearOptionsLocked(); 832 } else { 833 if (r.configDestroy) { 834 destroyActivityLocked(r, true, false, "stop-config"); 835 mStackSupervisor.resumeTopActivitiesLocked(); 836 } else { 837 mStackSupervisor.updatePreviousProcessLocked(r); 838 } 839 } 840 } 841 } 842 843 private void completePauseLocked() { 844 ActivityRecord prev = mPausingActivity; 845 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 846 847 if (prev != null) { 848 if (prev.finishing) { 849 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 850 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 851 } else if (prev.app != null) { 852 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 853 if (prev.waitingVisible) { 854 prev.waitingVisible = false; 855 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 856 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 857 TAG, "Complete pause, no longer waiting: " + prev); 858 } 859 if (prev.configDestroy) { 860 // The previous is being paused because the configuration 861 // is changing, which means it is actually stopping... 862 // To juggle the fact that we are also starting a new 863 // instance right now, we need to first completely stop 864 // the current instance before starting the new one. 865 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 866 destroyActivityLocked(prev, true, false, "pause-config"); 867 } else { 868 mStackSupervisor.mStoppingActivities.add(prev); 869 if (mStackSupervisor.mStoppingActivities.size() > 3 || 870 prev.frontOfTask && mTaskHistory.size() <= 1) { 871 // If we already have a few activities waiting to stop, 872 // then give up on things going idle and start clearing 873 // them out. Or if r is the last of activity of the last task the stack 874 // will be empty and must be cleared immediately. 875 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 876 mStackSupervisor.scheduleIdleLocked(); 877 } else { 878 mStackSupervisor.checkReadyForSleepLocked(); 879 } 880 } 881 } else { 882 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 883 prev = null; 884 } 885 mPausingActivity = null; 886 } 887 888 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 889 if (!mService.isSleepingOrShuttingDown()) { 890 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 891 } else { 892 mStackSupervisor.checkReadyForSleepLocked(); 893 ActivityRecord top = topStack.topRunningActivityLocked(null); 894 if (top == null || (prev != null && top != prev)) { 895 // If there are no more activities available to run, 896 // do resume anyway to start something. Also if the top 897 // activity on the stack is not the just paused activity, 898 // we need to go ahead and resume it to ensure we complete 899 // an in-flight app switch. 900 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 901 } 902 } 903 904 if (prev != null) { 905 prev.resumeKeyDispatchingLocked(); 906 907 if (prev.app != null && prev.cpuTimeAtResume > 0 908 && mService.mBatteryStatsService.isOnBattery()) { 909 long diff; 910 synchronized (mService.mProcessCpuThread) { 911 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 912 - prev.cpuTimeAtResume; 913 } 914 if (diff > 0) { 915 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 916 synchronized (bsi) { 917 BatteryStatsImpl.Uid.Proc ps = 918 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 919 prev.info.packageName); 920 if (ps != null) { 921 ps.addForegroundTimeLocked(diff); 922 } 923 } 924 } 925 } 926 prev.cpuTimeAtResume = 0; // reset it 927 } 928 } 929 930 /** 931 * Once we know that we have asked an application to put an activity in 932 * the resumed state (either by launching it or explicitly telling it), 933 * this function updates the rest of our state to match that fact. 934 */ 935 private void completeResumeLocked(ActivityRecord next) { 936 next.idle = false; 937 next.results = null; 938 next.newIntents = null; 939 if (next.nowVisible) { 940 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 941 mStackSupervisor.dismissKeyguard(); 942 } 943 944 // schedule an idle timeout in case the app doesn't do it for us. 945 mStackSupervisor.scheduleIdleTimeoutLocked(next); 946 947 mStackSupervisor.reportResumedActivityLocked(next); 948 949 next.resumeKeyDispatchingLocked(); 950 mNoAnimActivities.clear(); 951 952 // Mark the point when the activity is resuming 953 // TODO: To be more accurate, the mark should be before the onCreate, 954 // not after the onResume. But for subsequent starts, onResume is fine. 955 if (next.app != null) { 956 synchronized (mService.mProcessCpuThread) { 957 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 958 } 959 } else { 960 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 961 } 962 } 963 964 /** 965 * Version of ensureActivitiesVisible that can easily be called anywhere. 966 */ 967 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 968 return ensureActivitiesVisibleLocked(starting, configChanges, false); 969 } 970 971 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 972 boolean forceHomeShown) { 973 ActivityRecord r = topRunningActivityLocked(null); 974 return r != null && 975 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 976 } 977 978 /** 979 * Make sure that all activities that need to be visible (that is, they 980 * currently can be seen by the user) actually are. 981 */ 982 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 983 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 984 if (true || DEBUG_VISBILITY) Slog.v( 985 TAG, "ensureActivitiesVisible behind " + top 986 + " configChanges=0x" + Integer.toHexString(configChanges)); 987 988 if (mTranslucentActivityWaiting != top) { 989 mUndrawnActivitiesBelowTopTranslucent.clear(); 990 if (mTranslucentActivityWaiting != null) { 991 // Call the callback with a timeout indication. 992 notifyActivityDrawnLocked(null); 993 mTranslucentActivityWaiting = null; 994 } 995 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 996 } 997 998 // If the top activity is not fullscreen, then we need to 999 // make sure any activities under it are now visible. 1000 boolean aboveTop = true; 1001 boolean showHomeBehindStack = false; 1002 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1003 !(forceHomeShown && isHomeStack()); 1004 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1005 final TaskRecord task = mTaskHistory.get(taskNdx); 1006 final ArrayList<ActivityRecord> activities = task.mActivities; 1007 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1008 final ActivityRecord r = activities.get(activityNdx); 1009 if (r.finishing) { 1010 continue; 1011 } 1012 if (aboveTop && r != top) { 1013 continue; 1014 } 1015 aboveTop = false; 1016 if (!behindFullscreen) { 1017 if (DEBUG_VISBILITY) Slog.v( 1018 TAG, "Make visible? " + r + " finishing=" + r.finishing 1019 + " state=" + r.state); 1020 1021 final boolean doThisProcess = onlyThisProcess == null 1022 || onlyThisProcess.equals(r.processName); 1023 1024 // First: if this is not the current activity being started, make 1025 // sure it matches the current configuration. 1026 if (r != starting && doThisProcess) { 1027 ensureActivityConfigurationLocked(r, 0); 1028 } 1029 1030 if (r.app == null || r.app.thread == null) { 1031 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1032 // This activity needs to be visible, but isn't even 1033 // running... get it started, but don't resume it 1034 // at this point. 1035 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1036 if (r != starting) { 1037 r.startFreezingScreenLocked(r.app, configChanges); 1038 } 1039 if (!r.visible) { 1040 if (true || DEBUG_VISBILITY) Slog.v( 1041 TAG, "Starting and making visible: " + r); 1042 mWindowManager.setAppVisibility(r.appToken, true); 1043 } 1044 if (r != starting) { 1045 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1046 } 1047 } 1048 1049 } else if (r.visible) { 1050 // If this activity is already visible, then there is nothing 1051 // else to do here. 1052 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1053 r.stopFreezingScreenLocked(false); 1054 1055 } else if (onlyThisProcess == null) { 1056 // This activity is not currently visible, but is running. 1057 // Tell it to become visible. 1058 r.visible = true; 1059 if (r.state != ActivityState.RESUMED && r != starting) { 1060 // If this activity is paused, tell it 1061 // to now show its window. 1062 if (true || DEBUG_VISBILITY) Slog.v( 1063 TAG, "Making visible and scheduling visibility: " + r); 1064 try { 1065 if (mTranslucentActivityWaiting != null) { 1066 mUndrawnActivitiesBelowTopTranslucent.add(r); 1067 } 1068 mWindowManager.setAppVisibility(r.appToken, true); 1069 r.sleeping = false; 1070 r.app.pendingUiClean = true; 1071 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1072 r.stopFreezingScreenLocked(false); 1073 } catch (Exception e) { 1074 // Just skip on any failure; we'll make it 1075 // visible when it next restarts. 1076 Slog.w(TAG, "Exception thrown making visibile: " 1077 + r.intent.getComponent(), e); 1078 } 1079 } 1080 } 1081 1082 // Aggregate current change flags. 1083 configChanges |= r.configChangeFlags; 1084 1085 if (r.fullscreen) { 1086 // At this point, nothing else needs to be shown 1087 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1088 behindFullscreen = true; 1089 } else if (task.mOnTopOfHome) { 1090 // Work our way down from r to bottom of task and see if there are any 1091 // visible activities below r. 1092 int rIndex = task.mActivities.indexOf(r); 1093 for ( --rIndex; rIndex >= 0; --rIndex) { 1094 final ActivityRecord blocker = task.mActivities.get(rIndex); 1095 if (!blocker.finishing && blocker.visible) { 1096 if (DEBUG_VISBILITY) Slog.v(TAG, "Home visibility for " + 1097 r + " blocked by " + blocker); 1098 break; 1099 } 1100 } 1101 if (rIndex < 0) { 1102 // Got to task bottom without finding a visible activity, show home. 1103 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1104 showHomeBehindStack = true; 1105 behindFullscreen = true; 1106 } 1107 } 1108 } else { 1109 if (DEBUG_VISBILITY) Slog.v( 1110 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1111 + " state=" + r.state 1112 + " behindFullscreen=" + behindFullscreen); 1113 // Now for any activities that aren't visible to the user, make 1114 // sure they no longer are keeping the screen frozen. 1115 if (r.visible) { 1116 if (true || DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1117 r.visible = false; 1118 try { 1119 mWindowManager.setAppVisibility(r.appToken, false); 1120 switch (r.state) { 1121 case STOPPING: 1122 case STOPPED: 1123 if (r.app != null && r.app.thread != null) { 1124 if (DEBUG_VISBILITY) Slog.v( 1125 TAG, "Scheduling invisibility: " + r); 1126 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1127 } 1128 break; 1129 1130 case INITIALIZING: 1131 case RESUMED: 1132 case PAUSING: 1133 case PAUSED: 1134 // This case created for transitioning activities from 1135 // translucent to opaque {@link Activity#convertToOpaque}. 1136 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1137 mStackSupervisor.mStoppingActivities.add(r); 1138 } 1139 mStackSupervisor.scheduleIdleLocked(); 1140 break; 1141 1142 default: 1143 break; 1144 } 1145 } catch (Exception e) { 1146 // Just skip on any failure; we'll make it 1147 // visible when it next restarts. 1148 Slog.w(TAG, "Exception thrown making hidden: " 1149 + r.intent.getComponent(), e); 1150 } 1151 } else { 1152 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1153 } 1154 } 1155 } 1156 } 1157 return showHomeBehindStack; 1158 } 1159 1160 void convertToTranslucent(ActivityRecord r) { 1161 mTranslucentActivityWaiting = r; 1162 mUndrawnActivitiesBelowTopTranslucent.clear(); 1163 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1164 } 1165 1166 /** 1167 * Called as activities below the top translucent activity are redrawn. When the last one is 1168 * redrawn notify the top activity by calling 1169 * {@link Activity#onTranslucentConversionComplete}. 1170 * 1171 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1172 * occurred and the activity will be notified immediately. 1173 */ 1174 void notifyActivityDrawnLocked(ActivityRecord r) { 1175 if ((r == null) 1176 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1177 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1178 // The last undrawn activity below the top has just been drawn. If there is an 1179 // opaque activity at the top, notify it that it can become translucent safely now. 1180 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1181 mTranslucentActivityWaiting = null; 1182 mUndrawnActivitiesBelowTopTranslucent.clear(); 1183 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1184 1185 if (waitingActivity != null && waitingActivity.app != null && 1186 waitingActivity.app.thread != null) { 1187 try { 1188 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1189 waitingActivity.appToken, r != null); 1190 } catch (RemoteException e) { 1191 } 1192 } 1193 } 1194 } 1195 1196 /** 1197 * Ensure that the top activity in the stack is resumed. 1198 * 1199 * @param prev The previously resumed activity, for when in the process 1200 * of pausing; can be null to call from elsewhere. 1201 * 1202 * @return Returns true if something is being resumed, or false if 1203 * nothing happened. 1204 */ 1205 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1206 return resumeTopActivityLocked(prev, null); 1207 } 1208 1209 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1210 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1211 1212 // Find the first activity that is not finishing. 1213 ActivityRecord next = topRunningActivityLocked(null); 1214 1215 // Remember how we'll process this pause/resume situation, and ensure 1216 // that the state is reset however we wind up proceeding. 1217 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1218 mStackSupervisor.mUserLeaving = false; 1219 1220 if (next == null) { 1221 // There are no more activities! Let's just start up the 1222 // Launcher... 1223 ActivityOptions.abort(options); 1224 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1225 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1226 return mStackSupervisor.resumeHomeActivity(prev); 1227 } 1228 1229 next.delayedResume = false; 1230 1231 // If the top activity is the resumed one, nothing to do. 1232 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1233 mStackSupervisor.allResumedActivitiesComplete()) { 1234 // Make sure we have executed any pending transitions, since there 1235 // should be nothing left to do at this point. 1236 mWindowManager.executeAppTransition(); 1237 mNoAnimActivities.clear(); 1238 ActivityOptions.abort(options); 1239 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1240 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1241 return false; 1242 } 1243 1244 final TaskRecord nextTask = next.task; 1245 final TaskRecord prevTask = prev != null ? prev.task : null; 1246 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1247 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1248 if (prevTask == nextTask) { 1249 ArrayList<ActivityRecord> activities = prevTask.mActivities; 1250 final int numActivities = activities.size(); 1251 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1252 final ActivityRecord r = activities.get(activityNdx); 1253 // r is usually the same as next, but what if two activities were launched 1254 // before prev finished? 1255 if (!r.finishing) { 1256 r.frontOfTask = true; 1257 break; 1258 } 1259 } 1260 } else if (prevTask != topTask()) { 1261 // This task is going away but it was supposed to return to the home task. 1262 // Now the task above it has to return to the home task instead. 1263 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1264 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1265 } else { 1266 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Launching home next"); 1267 return mStackSupervisor.resumeHomeActivity(prev); 1268 } 1269 } 1270 1271 // If we are sleeping, and there is no resumed activity, and the top 1272 // activity is paused, well that is the state we want. 1273 if (mService.isSleepingOrShuttingDown() 1274 && mLastPausedActivity == next 1275 && mStackSupervisor.allPausedActivitiesComplete()) { 1276 // Make sure we have executed any pending transitions, since there 1277 // should be nothing left to do at this point. 1278 mWindowManager.executeAppTransition(); 1279 mNoAnimActivities.clear(); 1280 ActivityOptions.abort(options); 1281 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1282 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1283 return false; 1284 } 1285 1286 // Make sure that the user who owns this activity is started. If not, 1287 // we will just leave it as is because someone should be bringing 1288 // another user's activities to the top of the stack. 1289 if (mService.mStartedUsers.get(next.userId) == null) { 1290 Slog.w(TAG, "Skipping resume of top activity " + next 1291 + ": user " + next.userId + " is stopped"); 1292 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1293 return false; 1294 } 1295 1296 // The activity may be waiting for stop, but that is no longer 1297 // appropriate for it. 1298 mStackSupervisor.mStoppingActivities.remove(next); 1299 mStackSupervisor.mGoingToSleepActivities.remove(next); 1300 next.sleeping = false; 1301 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1302 1303 next.updateOptionsLocked(options); 1304 1305 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1306 1307 // If we are currently pausing an activity, then don't do anything 1308 // until that is done. 1309 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1310 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1311 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1312 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1313 return false; 1314 } 1315 1316 // Okay we are now going to start a switch, to 'next'. We may first 1317 // have to pause the current activity, but this is an important point 1318 // where we have decided to go to 'next' so keep track of that. 1319 // XXX "App Redirected" dialog is getting too many false positives 1320 // at this point, so turn off for now. 1321 if (false) { 1322 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1323 long now = SystemClock.uptimeMillis(); 1324 final boolean inTime = mLastStartedActivity.startTime != 0 1325 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1326 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1327 final int nextUid = next.info.applicationInfo.uid; 1328 if (inTime && lastUid != nextUid 1329 && lastUid != next.launchedFromUid 1330 && mService.checkPermission( 1331 android.Manifest.permission.STOP_APP_SWITCHES, 1332 -1, next.launchedFromUid) 1333 != PackageManager.PERMISSION_GRANTED) { 1334 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1335 } else { 1336 next.startTime = now; 1337 mLastStartedActivity = next; 1338 } 1339 } else { 1340 next.startTime = SystemClock.uptimeMillis(); 1341 mLastStartedActivity = next; 1342 } 1343 } 1344 1345 // We need to start pausing the current activity so the top one 1346 // can be resumed... 1347 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1348 if (mResumedActivity != null) { 1349 pausing = true; 1350 startPausingLocked(userLeaving, false); 1351 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1352 } 1353 if (pausing) { 1354 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1355 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1356 // At this point we want to put the upcoming activity's process 1357 // at the top of the LRU list, since we know we will be needing it 1358 // very soon and it would be a waste to let it get killed if it 1359 // happens to be sitting towards the end. 1360 if (next.app != null && next.app.thread != null) { 1361 // No reason to do full oom adj update here; we'll let that 1362 // happen whenever it needs to later. 1363 mService.updateLruProcessLocked(next.app, false, true); 1364 } 1365 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1366 return true; 1367 } 1368 1369 // If the most recent activity was noHistory but was only stopped rather 1370 // than stopped+finished because the device went to sleep, we need to make 1371 // sure to finish it as we're making a new activity topmost. 1372 if (mService.mSleeping && mLastNoHistoryActivity != null && 1373 !mLastNoHistoryActivity.finishing) { 1374 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1375 " on new resume"); 1376 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1377 null, "no-history", false); 1378 mLastNoHistoryActivity = null; 1379 } 1380 1381 if (prev != null && prev != next) { 1382 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1383 prev.waitingVisible = true; 1384 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1385 if (DEBUG_SWITCH) Slog.v( 1386 TAG, "Resuming top, waiting visible to hide: " + prev); 1387 } else { 1388 // The next activity is already visible, so hide the previous 1389 // activity's windows right now so we can show the new one ASAP. 1390 // We only do this if the previous is finishing, which should mean 1391 // it is on top of the one being resumed so hiding it quickly 1392 // is good. Otherwise, we want to do the normal route of allowing 1393 // the resumed activity to be shown so we can decide if the 1394 // previous should actually be hidden depending on whether the 1395 // new one is found to be full-screen or not. 1396 if (prev.finishing) { 1397 mWindowManager.setAppVisibility(prev.appToken, false); 1398 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1399 + prev + ", waitingVisible=" 1400 + (prev != null ? prev.waitingVisible : null) 1401 + ", nowVisible=" + next.nowVisible); 1402 } else { 1403 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1404 + prev + ", waitingVisible=" 1405 + (prev != null ? prev.waitingVisible : null) 1406 + ", nowVisible=" + next.nowVisible); 1407 } 1408 } 1409 } 1410 1411 // Launching this app's activity, make sure the app is no longer 1412 // considered stopped. 1413 try { 1414 AppGlobals.getPackageManager().setPackageStoppedState( 1415 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1416 } catch (RemoteException e1) { 1417 } catch (IllegalArgumentException e) { 1418 Slog.w(TAG, "Failed trying to unstop package " 1419 + next.packageName + ": " + e); 1420 } 1421 1422 // We are starting up the next activity, so tell the window manager 1423 // that the previous one will be hidden soon. This way it can know 1424 // to ignore it when computing the desired screen orientation. 1425 boolean anim = true; 1426 if (prev != null) { 1427 if (prev.finishing) { 1428 if (DEBUG_TRANSITION) Slog.v(TAG, 1429 "Prepare close transition: prev=" + prev); 1430 if (mNoAnimActivities.contains(prev)) { 1431 anim = false; 1432 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1433 } else { 1434 mWindowManager.prepareAppTransition(prev.task == next.task 1435 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1436 : AppTransition.TRANSIT_TASK_CLOSE, false); 1437 } 1438 mWindowManager.setAppWillBeHidden(prev.appToken); 1439 mWindowManager.setAppVisibility(prev.appToken, false); 1440 } else { 1441 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1442 if (mNoAnimActivities.contains(next)) { 1443 anim = false; 1444 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1445 } else { 1446 mWindowManager.prepareAppTransition(prev.task == next.task 1447 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1448 : AppTransition.TRANSIT_TASK_OPEN, false); 1449 } 1450 } 1451 if (false) { 1452 mWindowManager.setAppWillBeHidden(prev.appToken); 1453 mWindowManager.setAppVisibility(prev.appToken, false); 1454 } 1455 } else { 1456 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1457 if (mNoAnimActivities.contains(next)) { 1458 anim = false; 1459 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1460 } else { 1461 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1462 } 1463 } 1464 if (anim) { 1465 next.applyOptionsLocked(); 1466 } else { 1467 next.clearOptionsLocked(); 1468 } 1469 1470 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1471 if (next.app != null && next.app.thread != null) { 1472 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1473 1474 // This activity is now becoming visible. 1475 mWindowManager.setAppVisibility(next.appToken, true); 1476 1477 // schedule launch ticks to collect information about slow apps. 1478 next.startLaunchTickingLocked(); 1479 1480 ActivityRecord lastResumedActivity = 1481 lastStack == null ? null :lastStack.mResumedActivity; 1482 ActivityState lastState = next.state; 1483 1484 mService.updateCpuStats(); 1485 1486 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1487 next.state = ActivityState.RESUMED; 1488 mResumedActivity = next; 1489 next.task.touchActiveTime(); 1490 mService.addRecentTaskLocked(next.task); 1491 mService.updateLruProcessLocked(next.app, true, true); 1492 updateLRUListLocked(next); 1493 1494 // Have the window manager re-evaluate the orientation of 1495 // the screen based on the new activity order. 1496 boolean notUpdated = true; 1497 if (mStackSupervisor.isFrontStack(this)) { 1498 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1499 mService.mConfiguration, 1500 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1501 if (config != null) { 1502 next.frozenBeforeDestroy = true; 1503 } 1504 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1505 } 1506 1507 if (notUpdated) { 1508 // The configuration update wasn't able to keep the existing 1509 // instance of the activity, and instead started a new one. 1510 // We should be all done, but let's just make sure our activity 1511 // is still at the top and schedule another run if something 1512 // weird happened. 1513 ActivityRecord nextNext = topRunningActivityLocked(null); 1514 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1515 "Activity config changed during resume: " + next 1516 + ", new next: " + nextNext); 1517 if (nextNext != next) { 1518 // Do over! 1519 mStackSupervisor.scheduleResumeTopActivities(); 1520 } 1521 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1522 mNoAnimActivities.clear(); 1523 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1524 return true; 1525 } 1526 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1527 return false; 1528 } 1529 1530 try { 1531 // Deliver all pending results. 1532 ArrayList<ResultInfo> a = next.results; 1533 if (a != null) { 1534 final int N = a.size(); 1535 if (!next.finishing && N > 0) { 1536 if (DEBUG_RESULTS) Slog.v( 1537 TAG, "Delivering results to " + next 1538 + ": " + a); 1539 next.app.thread.scheduleSendResult(next.appToken, a); 1540 } 1541 } 1542 1543 if (next.newIntents != null) { 1544 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1545 } 1546 1547 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1548 next.userId, System.identityHashCode(next), 1549 next.task.taskId, next.shortComponentName); 1550 1551 next.sleeping = false; 1552 mService.showAskCompatModeDialogLocked(next); 1553 next.app.pendingUiClean = true; 1554 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1555 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1556 mService.isNextTransitionForward()); 1557 1558 mStackSupervisor.checkReadyForSleepLocked(); 1559 1560 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1561 } catch (Exception e) { 1562 // Whoops, need to restart this activity! 1563 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1564 + lastState + ": " + next); 1565 next.state = lastState; 1566 if (lastStack != null) { 1567 lastStack.mResumedActivity = lastResumedActivity; 1568 } 1569 Slog.i(TAG, "Restarting because process died: " + next); 1570 if (!next.hasBeenLaunched) { 1571 next.hasBeenLaunched = true; 1572 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1573 mStackSupervisor.isFrontStack(lastStack)) { 1574 mWindowManager.setAppStartingWindow( 1575 next.appToken, next.packageName, next.theme, 1576 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1577 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1578 next.windowFlags, null, true); 1579 } 1580 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1581 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1582 return true; 1583 } 1584 1585 // From this point on, if something goes wrong there is no way 1586 // to recover the activity. 1587 try { 1588 next.visible = true; 1589 completeResumeLocked(next); 1590 } catch (Exception e) { 1591 // If any exception gets thrown, toss away this 1592 // activity and try the next one. 1593 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1594 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1595 "resume-exception", true); 1596 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1597 return true; 1598 } 1599 next.stopped = false; 1600 1601 } else { 1602 // Whoops, need to restart this activity! 1603 if (!next.hasBeenLaunched) { 1604 next.hasBeenLaunched = true; 1605 } else { 1606 if (SHOW_APP_STARTING_PREVIEW) { 1607 mWindowManager.setAppStartingWindow( 1608 next.appToken, next.packageName, next.theme, 1609 mService.compatibilityInfoForPackageLocked( 1610 next.info.applicationInfo), 1611 next.nonLocalizedLabel, 1612 next.labelRes, next.icon, next.logo, next.windowFlags, 1613 null, true); 1614 } 1615 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1616 } 1617 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1618 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1619 } 1620 1621 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1622 return true; 1623 } 1624 1625 private void insertTaskAtTop(TaskRecord task) { 1626 mTaskHistory.remove(task); 1627 // Now put task at top. 1628 int stackNdx = mTaskHistory.size(); 1629 if (task.userId != mCurrentUser) { 1630 // Put non-current user tasks below current user tasks. 1631 while (--stackNdx >= 0) { 1632 if (mTaskHistory.get(stackNdx).userId != mCurrentUser) { 1633 break; 1634 } 1635 } 1636 ++stackNdx; 1637 } 1638 mTaskHistory.add(stackNdx, task); 1639 } 1640 1641 final void startActivityLocked(ActivityRecord r, boolean newTask, 1642 boolean doResume, boolean keepCurTransition, Bundle options) { 1643 TaskRecord rTask = r.task; 1644 final int taskId = rTask.taskId; 1645 if (taskForIdLocked(taskId) == null || newTask) { 1646 // Last activity in task had been removed or ActivityManagerService is reusing task. 1647 // Insert or replace. 1648 // Might not even be in. 1649 insertTaskAtTop(rTask); 1650 mWindowManager.moveTaskToTop(taskId); 1651 } 1652 TaskRecord task = null; 1653 if (!newTask) { 1654 // If starting in an existing task, find where that is... 1655 boolean startIt = true; 1656 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1657 task = mTaskHistory.get(taskNdx); 1658 if (task == r.task) { 1659 // Here it is! Now, if this is not yet visible to the 1660 // user, then just add it without starting; it will 1661 // get started when the user navigates back to it. 1662 if (!startIt) { 1663 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1664 + task, new RuntimeException("here").fillInStackTrace()); 1665 task.addActivityToTop(r); 1666 r.putInHistory(); 1667 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1668 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1669 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1670 r.userId); 1671 if (VALIDATE_TOKENS) { 1672 validateAppTokensLocked(); 1673 } 1674 ActivityOptions.abort(options); 1675 return; 1676 } 1677 break; 1678 } else if (task.numFullscreen > 0) { 1679 startIt = false; 1680 } 1681 } 1682 } 1683 1684 // Place a new activity at top of stack, so it is next to interact 1685 // with the user. 1686 1687 // If we are not placing the new activity frontmost, we do not want 1688 // to deliver the onUserLeaving callback to the actual frontmost 1689 // activity 1690 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1691 mStackSupervisor.mUserLeaving = false; 1692 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1693 "startActivity() behind front, mUserLeaving=false"); 1694 } 1695 1696 task = r.task; 1697 1698 // Slot the activity into the history stack and proceed 1699 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1700 new RuntimeException("here").fillInStackTrace()); 1701 task.addActivityToTop(r); 1702 1703 r.putInHistory(); 1704 r.frontOfTask = newTask; 1705 if (!isHomeStack() || numActivities() > 0) { 1706 // We want to show the starting preview window if we are 1707 // switching to a new task, or the next activity's process is 1708 // not currently running. 1709 boolean showStartingIcon = newTask; 1710 ProcessRecord proc = r.app; 1711 if (proc == null) { 1712 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1713 } 1714 if (proc == null || proc.thread == null) { 1715 showStartingIcon = true; 1716 } 1717 if (DEBUG_TRANSITION) Slog.v(TAG, 1718 "Prepare open transition: starting " + r); 1719 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1720 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1721 mNoAnimActivities.add(r); 1722 } else { 1723 mWindowManager.prepareAppTransition(newTask 1724 ? AppTransition.TRANSIT_TASK_OPEN 1725 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1726 mNoAnimActivities.remove(r); 1727 } 1728 r.updateOptionsLocked(options); 1729 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1730 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1731 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId); 1732 boolean doShow = true; 1733 if (newTask) { 1734 // Even though this activity is starting fresh, we still need 1735 // to reset it to make sure we apply affinities to move any 1736 // existing activities from other tasks in to it. 1737 // If the caller has requested that the target task be 1738 // reset, then do so. 1739 if ((r.intent.getFlags() 1740 &Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1741 resetTaskIfNeededLocked(r, r); 1742 doShow = topRunningNonDelayedActivityLocked(null) == r; 1743 } 1744 } 1745 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1746 // Figure out if we are transitioning from another activity that is 1747 // "has the same starting icon" as the next one. This allows the 1748 // window manager to keep the previous window it had previously 1749 // created, if it still had one. 1750 ActivityRecord prev = mResumedActivity; 1751 if (prev != null) { 1752 // We don't want to reuse the previous starting preview if: 1753 // (1) The current activity is in a different task. 1754 if (prev.task != r.task) { 1755 prev = null; 1756 } 1757 // (2) The current activity is already displayed. 1758 else if (prev.nowVisible) { 1759 prev = null; 1760 } 1761 } 1762 mWindowManager.setAppStartingWindow( 1763 r.appToken, r.packageName, r.theme, 1764 mService.compatibilityInfoForPackageLocked( 1765 r.info.applicationInfo), r.nonLocalizedLabel, 1766 r.labelRes, r.icon, r.logo, r.windowFlags, 1767 prev != null ? prev.appToken : null, showStartingIcon); 1768 } 1769 } else { 1770 // If this is the first activity, don't do any fancy animations, 1771 // because there is nothing for it to animate on top of. 1772 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1773 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1774 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId); 1775 ActivityOptions.abort(options); 1776 } 1777 if (VALIDATE_TOKENS) { 1778 validateAppTokensLocked(); 1779 } 1780 1781 if (doResume) { 1782 mStackSupervisor.resumeTopActivitiesLocked(); 1783 } 1784 } 1785 1786 final void validateAppTokensLocked() { 1787 mValidateAppTokens.clear(); 1788 mValidateAppTokens.ensureCapacity(numActivities()); 1789 final int numTasks = mTaskHistory.size(); 1790 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1791 TaskRecord task = mTaskHistory.get(taskNdx); 1792 final ArrayList<ActivityRecord> activities = task.mActivities; 1793 if (activities.isEmpty()) { 1794 continue; 1795 } 1796 TaskGroup group = new TaskGroup(); 1797 group.taskId = task.taskId; 1798 mValidateAppTokens.add(group); 1799 final int numActivities = activities.size(); 1800 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1801 final ActivityRecord r = activities.get(activityNdx); 1802 group.tokens.add(r.appToken); 1803 } 1804 } 1805 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1806 } 1807 1808 /** 1809 * Perform a reset of the given task, if needed as part of launching it. 1810 * Returns the new HistoryRecord at the top of the task. 1811 */ 1812 /** 1813 * Helper method for #resetTaskIfNeededLocked. 1814 * We are inside of the task being reset... we'll either finish this activity, push it out 1815 * for another task, or leave it as-is. 1816 * @param task The task containing the Activity (taskTop) that might be reset. 1817 * @param forceReset 1818 * @return An ActivityOptions that needs to be processed. 1819 */ 1820 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1821 ActivityOptions topOptions = null; 1822 1823 int replyChainEnd = -1; 1824 boolean canMoveOptions = true; 1825 1826 // We only do this for activities that are not the root of the task (since if we finish 1827 // the root, we may no longer have the task!). 1828 final ArrayList<ActivityRecord> activities = task.mActivities; 1829 final int numActivities = activities.size(); 1830 for (int i = numActivities - 1; i > 0; --i ) { 1831 ActivityRecord target = activities.get(i); 1832 1833 final int flags = target.info.flags; 1834 final boolean finishOnTaskLaunch = 1835 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1836 final boolean allowTaskReparenting = 1837 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1838 final boolean clearWhenTaskReset = 1839 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 1840 1841 if (!finishOnTaskLaunch 1842 && !clearWhenTaskReset 1843 && target.resultTo != null) { 1844 // If this activity is sending a reply to a previous 1845 // activity, we can't do anything with it now until 1846 // we reach the start of the reply chain. 1847 // XXX note that we are assuming the result is always 1848 // to the previous activity, which is almost always 1849 // the case but we really shouldn't count on. 1850 if (replyChainEnd < 0) { 1851 replyChainEnd = i; 1852 } 1853 } else if (!finishOnTaskLaunch 1854 && !clearWhenTaskReset 1855 && allowTaskReparenting 1856 && target.taskAffinity != null 1857 && !target.taskAffinity.equals(task.affinity)) { 1858 // If this activity has an affinity for another 1859 // task, then we need to move it out of here. We will 1860 // move it as far out of the way as possible, to the 1861 // bottom of the activity stack. This also keeps it 1862 // correctly ordered with any activities we previously 1863 // moved. 1864 final ActivityRecord bottom = 1865 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 1866 mTaskHistory.get(0).mActivities.get(0) : null; 1867 if (bottom != null && target.taskAffinity != null 1868 && target.taskAffinity.equals(bottom.task.affinity)) { 1869 // If the activity currently at the bottom has the 1870 // same task affinity as the one we are moving, 1871 // then merge it into the same task. 1872 target.setTask(bottom.task, bottom.thumbHolder, false); 1873 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1874 + " out to bottom task " + bottom.task); 1875 } else { 1876 target.setTask(createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 1877 null, false), null, false); 1878 target.task.affinityIntent = target.intent; 1879 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1880 + " out to new task " + target.task); 1881 } 1882 1883 final TaskRecord targetTask = target.task; 1884 final int targetTaskId = targetTask.taskId; 1885 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 1886 1887 boolean noOptions = canMoveOptions; 1888 final int start = replyChainEnd < 0 ? i : replyChainEnd; 1889 for (int srcPos = start; srcPos >= i; --srcPos) { 1890 final ActivityRecord p = activities.get(srcPos); 1891 if (p.finishing) { 1892 continue; 1893 } 1894 1895 ThumbnailHolder curThumbHolder = p.thumbHolder; 1896 canMoveOptions = false; 1897 if (noOptions && topOptions == null) { 1898 topOptions = p.takeOptionsLocked(); 1899 if (topOptions != null) { 1900 noOptions = false; 1901 } 1902 } 1903 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 1904 + task + " adding to task=" + targetTask, 1905 new RuntimeException("here").fillInStackTrace()); 1906 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 1907 + " out to target's task " + target.task); 1908 p.setTask(targetTask, curThumbHolder, false); 1909 targetTask.addActivityAtBottom(p); 1910 1911 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 1912 } 1913 1914 mWindowManager.moveTaskToBottom(targetTaskId); 1915 if (VALIDATE_TOKENS) { 1916 validateAppTokensLocked(); 1917 } 1918 1919 replyChainEnd = -1; 1920 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 1921 // If the activity should just be removed -- either 1922 // because it asks for it, or the task should be 1923 // cleared -- then finish it and anything that is 1924 // part of its reply chain. 1925 int end; 1926 if (clearWhenTaskReset) { 1927 // In this case, we want to finish this activity 1928 // and everything above it, so be sneaky and pretend 1929 // like these are all in the reply chain. 1930 end = numActivities - 1; 1931 } else if (replyChainEnd < 0) { 1932 end = i; 1933 } else { 1934 end = replyChainEnd; 1935 } 1936 boolean noOptions = canMoveOptions; 1937 for (int srcPos = i; srcPos <= end; srcPos++) { 1938 ActivityRecord p = activities.get(srcPos); 1939 if (p.finishing) { 1940 continue; 1941 } 1942 canMoveOptions = false; 1943 if (noOptions && topOptions == null) { 1944 topOptions = p.takeOptionsLocked(); 1945 if (topOptions != null) { 1946 noOptions = false; 1947 } 1948 } 1949 if (DEBUG_TASKS) Slog.w(TAG, 1950 "resetTaskIntendedTask: calling finishActivity on " + p); 1951 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 1952 end--; 1953 srcPos--; 1954 } 1955 } 1956 replyChainEnd = -1; 1957 } else { 1958 // If we were in the middle of a chain, well the 1959 // activity that started it all doesn't want anything 1960 // special, so leave it all as-is. 1961 replyChainEnd = -1; 1962 } 1963 } 1964 1965 return topOptions; 1966 } 1967 1968 /** 1969 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 1970 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 1971 * @param affinityTask The task we are looking for an affinity to. 1972 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 1973 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 1974 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 1975 */ 1976 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 1977 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 1978 int replyChainEnd = -1; 1979 final int taskId = task.taskId; 1980 final String taskAffinity = task.affinity; 1981 1982 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 1983 final int numActivities = activities.size(); 1984 // Do not operate on the root Activity. 1985 for (int i = numActivities - 1; i > 0; --i) { 1986 ActivityRecord target = activities.get(i); 1987 1988 final int flags = target.info.flags; 1989 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1990 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1991 1992 if (target.resultTo != null) { 1993 // If this activity is sending a reply to a previous 1994 // activity, we can't do anything with it now until 1995 // we reach the start of the reply chain. 1996 // XXX note that we are assuming the result is always 1997 // to the previous activity, which is almost always 1998 // the case but we really shouldn't count on. 1999 if (replyChainEnd < 0) { 2000 replyChainEnd = i; 2001 } 2002 } else if (topTaskIsHigher 2003 && allowTaskReparenting 2004 && taskAffinity != null 2005 && taskAffinity.equals(target.taskAffinity)) { 2006 // This activity has an affinity for our task. Either remove it if we are 2007 // clearing or move it over to our task. Note that 2008 // we currently punt on the case where we are resetting a 2009 // task that is not at the top but who has activities above 2010 // with an affinity to it... this is really not a normal 2011 // case, and we will need to later pull that task to the front 2012 // and usually at that point we will do the reset and pick 2013 // up those remaining activities. (This only happens if 2014 // someone starts an activity in a new task from an activity 2015 // in a task that is not currently on top.) 2016 if (forceReset || finishOnTaskLaunch) { 2017 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2018 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2019 for (int srcPos = start; srcPos >= i; --srcPos) { 2020 final ActivityRecord p = activities.get(srcPos); 2021 if (p.finishing) { 2022 continue; 2023 } 2024 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2025 } 2026 } else { 2027 if (taskInsertionPoint < 0) { 2028 taskInsertionPoint = task.mActivities.size(); 2029 2030 } 2031 2032 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2033 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2034 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2035 for (int srcPos = start; srcPos >= i; --srcPos) { 2036 final ActivityRecord p = activities.get(srcPos); 2037 p.setTask(task, null, false); 2038 task.addActivityAtIndex(taskInsertionPoint, p); 2039 2040 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2041 + " to stack at " + task, 2042 new RuntimeException("here").fillInStackTrace()); 2043 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2044 + " in to resetting task " + task); 2045 mWindowManager.setAppGroupId(p.appToken, taskId); 2046 } 2047 mWindowManager.moveTaskToTop(taskId); 2048 if (VALIDATE_TOKENS) { 2049 validateAppTokensLocked(); 2050 } 2051 2052 // Now we've moved it in to place... but what if this is 2053 // a singleTop activity and we have put it on top of another 2054 // instance of the same activity? Then we drop the instance 2055 // below so it remains singleTop. 2056 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2057 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2058 int targetNdx = taskActivities.indexOf(target); 2059 if (targetNdx > 0) { 2060 ActivityRecord p = taskActivities.get(targetNdx - 1); 2061 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2062 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2063 false); 2064 } 2065 } 2066 } 2067 } 2068 2069 replyChainEnd = -1; 2070 } 2071 } 2072 return taskInsertionPoint; 2073 } 2074 2075 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2076 ActivityRecord newActivity) { 2077 boolean forceReset = 2078 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2079 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2080 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2081 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2082 forceReset = true; 2083 } 2084 } 2085 2086 final TaskRecord task = taskTop.task; 2087 2088 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2089 * for remaining tasks. Used for later tasks to reparent to task. */ 2090 boolean taskFound = false; 2091 2092 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2093 ActivityOptions topOptions = null; 2094 2095 // Preserve the location for reparenting in the new task. 2096 int reparentInsertionPoint = -1; 2097 2098 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2099 final TaskRecord targetTask = mTaskHistory.get(i); 2100 2101 if (targetTask == task) { 2102 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2103 taskFound = true; 2104 } else { 2105 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2106 taskFound, forceReset, reparentInsertionPoint); 2107 } 2108 } 2109 2110 int taskNdx = mTaskHistory.indexOf(task); 2111 do { 2112 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2113 } while (taskTop == null && taskNdx >= 0); 2114 2115 if (topOptions != null) { 2116 // If we got some ActivityOptions from an activity on top that 2117 // was removed from the task, propagate them to the new real top. 2118 if (taskTop != null) { 2119 taskTop.updateOptionsLocked(topOptions); 2120 } else { 2121 topOptions.abort(); 2122 } 2123 } 2124 2125 return taskTop; 2126 } 2127 2128 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2129 String resultWho, int requestCode, int resultCode, Intent data) { 2130 2131 if (callingUid > 0) { 2132 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2133 data, r.getUriPermissionsLocked()); 2134 } 2135 2136 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2137 + " : who=" + resultWho + " req=" + requestCode 2138 + " res=" + resultCode + " data=" + data); 2139 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2140 try { 2141 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2142 list.add(new ResultInfo(resultWho, requestCode, 2143 resultCode, data)); 2144 r.app.thread.scheduleSendResult(r.appToken, list); 2145 return; 2146 } catch (Exception e) { 2147 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2148 } 2149 } 2150 2151 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2152 } 2153 2154 final void stopActivityLocked(ActivityRecord r) { 2155 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2156 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2157 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2158 if (!r.finishing) { 2159 if (!mService.mSleeping) { 2160 if (DEBUG_STATES) { 2161 Slog.d(TAG, "no-history finish of " + r); 2162 } 2163 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2164 "no-history", false); 2165 } else { 2166 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2167 + " on stop because we're just sleeping"); 2168 } 2169 } 2170 } 2171 2172 if (r.app != null && r.app.thread != null) { 2173 if (mStackSupervisor.isFrontStack(this)) { 2174 if (mService.mFocusedActivity == r) { 2175 mService.setFocusedActivityLocked(topRunningActivityLocked(null)); 2176 } 2177 } 2178 r.resumeKeyDispatchingLocked(); 2179 try { 2180 r.stopped = false; 2181 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2182 + " (stop requested)"); 2183 r.state = ActivityState.STOPPING; 2184 if (DEBUG_VISBILITY) Slog.v( 2185 TAG, "Stopping visible=" + r.visible + " for " + r); 2186 if (!r.visible) { 2187 mWindowManager.setAppVisibility(r.appToken, false); 2188 } 2189 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2190 if (mService.isSleepingOrShuttingDown()) { 2191 r.setSleeping(true); 2192 } 2193 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2194 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2195 } catch (Exception e) { 2196 // Maybe just ignore exceptions here... if the process 2197 // has crashed, our death notification will clean things 2198 // up. 2199 Slog.w(TAG, "Exception thrown during pause", e); 2200 // Just in case, assume it to be stopped. 2201 r.stopped = true; 2202 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2203 r.state = ActivityState.STOPPED; 2204 if (r.configDestroy) { 2205 destroyActivityLocked(r, true, false, "stop-except"); 2206 } 2207 } 2208 } 2209 } 2210 2211 /** 2212 * @return Returns true if the activity is being finished, false if for 2213 * some reason it is being left as-is. 2214 */ 2215 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2216 Intent resultData, String reason, boolean oomAdj) { 2217 ActivityRecord r = isInStackLocked(token); 2218 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2219 TAG, "Finishing activity token=" + token + " r=" 2220 + ", result=" + resultCode + ", data=" + resultData 2221 + ", reason=" + reason); 2222 if (r == null) { 2223 return false; 2224 } 2225 2226 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2227 return true; 2228 } 2229 2230 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2231 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2232 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2233 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2234 ActivityRecord r = activities.get(activityNdx); 2235 if (r.resultTo == self && r.requestCode == requestCode) { 2236 if ((r.resultWho == null && resultWho == null) || 2237 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2238 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2239 false); 2240 } 2241 } 2242 } 2243 } 2244 mService.updateOomAdjLocked(); 2245 } 2246 2247 final void finishTopRunningActivityLocked(ProcessRecord app) { 2248 ActivityRecord r = topRunningActivityLocked(null); 2249 if (r != null && r.app == app) { 2250 // If the top running activity is from this crashing 2251 // process, then terminate it to avoid getting in a loop. 2252 Slog.w(TAG, " Force finishing activity " 2253 + r.intent.getComponent().flattenToShortString()); 2254 int taskNdx = mTaskHistory.indexOf(r.task); 2255 int activityNdx = r.task.mActivities.indexOf(r); 2256 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2257 // Also terminate any activities below it that aren't yet 2258 // stopped, to avoid a situation where one will get 2259 // re-start our crashing activity once it gets resumed again. 2260 --activityNdx; 2261 if (activityNdx < 0) { 2262 do { 2263 --taskNdx; 2264 if (taskNdx < 0) { 2265 break; 2266 } 2267 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2268 } while (activityNdx < 0); 2269 } 2270 if (activityNdx >= 0) { 2271 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2272 if (r.state == ActivityState.RESUMED 2273 || r.state == ActivityState.PAUSING 2274 || r.state == ActivityState.PAUSED) { 2275 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2276 Slog.w(TAG, " Force finishing activity " 2277 + r.intent.getComponent().flattenToShortString()); 2278 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2279 } 2280 } 2281 } 2282 } 2283 } 2284 2285 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2286 ArrayList<ActivityRecord> activities = r.task.mActivities; 2287 for (int index = activities.indexOf(r); index >= 0; --index) { 2288 ActivityRecord cur = activities.get(index); 2289 if (!Objects.equal(cur.taskAffinity, r.taskAffinity)) { 2290 break; 2291 } 2292 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2293 } 2294 return true; 2295 } 2296 2297 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2298 // send the result 2299 ActivityRecord resultTo = r.resultTo; 2300 if (resultTo != null) { 2301 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2302 + " who=" + r.resultWho + " req=" + r.requestCode 2303 + " res=" + resultCode + " data=" + resultData); 2304 if (r.info.applicationInfo.uid > 0) { 2305 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2306 resultTo.packageName, resultData, 2307 resultTo.getUriPermissionsLocked()); 2308 } 2309 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2310 resultData); 2311 r.resultTo = null; 2312 } 2313 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2314 2315 // Make sure this HistoryRecord is not holding on to other resources, 2316 // because clients have remote IPC references to this object so we 2317 // can't assume that will go away and want to avoid circular IPC refs. 2318 r.results = null; 2319 r.pendingResults = null; 2320 r.newIntents = null; 2321 r.icicle = null; 2322 } 2323 2324 /** 2325 * @return Returns true if this activity has been removed from the history 2326 * list, or false if it is still in the list and will be removed later. 2327 */ 2328 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2329 String reason, boolean oomAdj) { 2330 if (r.finishing) { 2331 Slog.w(TAG, "Duplicate finish request for " + r); 2332 return false; 2333 } 2334 2335 r.makeFinishing(); 2336 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2337 r.userId, System.identityHashCode(r), 2338 r.task.taskId, r.shortComponentName, reason); 2339 final ArrayList<ActivityRecord> activities = r.task.mActivities; 2340 final int index = activities.indexOf(r); 2341 if (index < (activities.size() - 1)) { 2342 ActivityRecord next = activities.get(index+1); 2343 if (r.frontOfTask) { 2344 // The next activity is now the front of the task. 2345 next.frontOfTask = true; 2346 } 2347 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2348 // If the caller asked that this activity (and all above it) 2349 // be cleared when the task is reset, don't lose that information, 2350 // but propagate it up to the next activity. 2351 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2352 } 2353 } 2354 2355 r.pauseKeyDispatchingLocked(); 2356 if (mStackSupervisor.isFrontStack(this)) { 2357 if (mService.mFocusedActivity == r) { 2358 mService.setFocusedActivityLocked(mStackSupervisor.topRunningActivityLocked()); 2359 } 2360 } 2361 2362 finishActivityResultsLocked(r, resultCode, resultData); 2363 2364 if (!mService.mPendingThumbnails.isEmpty()) { 2365 // There are clients waiting to receive thumbnails so, in case 2366 // this is an activity that someone is waiting for, add it 2367 // to the pending list so we can correctly update the clients. 2368 mStackSupervisor.mCancelledThumbnails.add(r); 2369 } 2370 2371 if (mResumedActivity == r) { 2372 boolean endTask = index <= 0; 2373 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2374 "Prepare close transition: finishing " + r); 2375 mWindowManager.prepareAppTransition(endTask 2376 ? AppTransition.TRANSIT_TASK_CLOSE 2377 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2378 2379 // Tell window manager to prepare for this one to be removed. 2380 mWindowManager.setAppVisibility(r.appToken, false); 2381 2382 if (mPausingActivity == null) { 2383 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2384 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2385 startPausingLocked(false, false); 2386 } 2387 2388 } else if (r.state != ActivityState.PAUSING) { 2389 // If the activity is PAUSING, we will complete the finish once 2390 // it is done pausing; else we can just directly finish it here. 2391 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2392 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2393 } else { 2394 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2395 } 2396 2397 return false; 2398 } 2399 2400 static final int FINISH_IMMEDIATELY = 0; 2401 static final int FINISH_AFTER_PAUSE = 1; 2402 static final int FINISH_AFTER_VISIBLE = 2; 2403 2404 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2405 // First things first: if this activity is currently visible, 2406 // and the resumed activity is not yet visible, then hold off on 2407 // finishing until the resumed one becomes visible. 2408 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2409 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2410 mStackSupervisor.mStoppingActivities.add(r); 2411 if (mStackSupervisor.mStoppingActivities.size() > 3 2412 || r.frontOfTask && mTaskHistory.size() <= 1) { 2413 // If we already have a few activities waiting to stop, 2414 // then give up on things going idle and start clearing 2415 // them out. Or if r is the last of activity of the last task the stack 2416 // will be empty and must be cleared immediately. 2417 mStackSupervisor.scheduleIdleLocked(); 2418 } else { 2419 mStackSupervisor.checkReadyForSleepLocked(); 2420 } 2421 } 2422 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2423 + " (finish requested)"); 2424 r.state = ActivityState.STOPPING; 2425 if (oomAdj) { 2426 mService.updateOomAdjLocked(); 2427 } 2428 return r; 2429 } 2430 2431 // make sure the record is cleaned out of other places. 2432 mStackSupervisor.mStoppingActivities.remove(r); 2433 mStackSupervisor.mGoingToSleepActivities.remove(r); 2434 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2435 if (mResumedActivity == r) { 2436 mResumedActivity = null; 2437 } 2438 final ActivityState prevState = r.state; 2439 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2440 r.state = ActivityState.FINISHING; 2441 2442 if (mode == FINISH_IMMEDIATELY 2443 || prevState == ActivityState.STOPPED 2444 || prevState == ActivityState.INITIALIZING) { 2445 // If this activity is already stopped, we can just finish 2446 // it right now. 2447 boolean activityRemoved = destroyActivityLocked(r, true, 2448 oomAdj, "finish-imm"); 2449 if (activityRemoved) { 2450 mStackSupervisor.resumeTopActivitiesLocked(); 2451 } 2452 return activityRemoved ? null : r; 2453 } 2454 2455 // Need to go through the full pause cycle to get this 2456 // activity into the stopped state and then finish it. 2457 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2458 mStackSupervisor.mFinishingActivities.add(r); 2459 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2460 return r; 2461 } 2462 2463 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2464 Intent resultData) { 2465 final ActivityRecord srec = ActivityRecord.forToken(token); 2466 final TaskRecord task = srec.task; 2467 final ArrayList<ActivityRecord> activities = task.mActivities; 2468 final int start = activities.indexOf(srec); 2469 if (!mTaskHistory.contains(task) || (start < 0)) { 2470 return false; 2471 } 2472 int finishTo = start - 1; 2473 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2474 boolean foundParentInTask = false; 2475 final ComponentName dest = destIntent.getComponent(); 2476 if (start > 0 && dest != null) { 2477 for (int i = finishTo; i >= 0; i--) { 2478 ActivityRecord r = activities.get(i); 2479 if (r.info.packageName.equals(dest.getPackageName()) && 2480 r.info.name.equals(dest.getClassName())) { 2481 finishTo = i; 2482 parent = r; 2483 foundParentInTask = true; 2484 break; 2485 } 2486 } 2487 } 2488 2489 IActivityController controller = mService.mController; 2490 if (controller != null) { 2491 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2492 if (next != null) { 2493 // ask watcher if this is allowed 2494 boolean resumeOK = true; 2495 try { 2496 resumeOK = controller.activityResuming(next.packageName); 2497 } catch (RemoteException e) { 2498 mService.mController = null; 2499 Watchdog.getInstance().setActivityController(null); 2500 } 2501 2502 if (!resumeOK) { 2503 return false; 2504 } 2505 } 2506 } 2507 final long origId = Binder.clearCallingIdentity(); 2508 for (int i = start; i > finishTo; i--) { 2509 ActivityRecord r = activities.get(i); 2510 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2511 // Only return the supplied result for the first activity finished 2512 resultCode = Activity.RESULT_CANCELED; 2513 resultData = null; 2514 } 2515 2516 if (parent != null && foundParentInTask) { 2517 final int parentLaunchMode = parent.info.launchMode; 2518 final int destIntentFlags = destIntent.getFlags(); 2519 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2520 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2521 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2522 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2523 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2524 } else { 2525 try { 2526 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2527 destIntent.getComponent(), 0, srec.userId); 2528 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2529 null, aInfo, parent.appToken, null, 2530 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2531 0, null, true, null); 2532 foundParentInTask = res == ActivityManager.START_SUCCESS; 2533 } catch (RemoteException e) { 2534 foundParentInTask = false; 2535 } 2536 requestFinishActivityLocked(parent.appToken, resultCode, 2537 resultData, "navigate-up", true); 2538 } 2539 } 2540 Binder.restoreCallingIdentity(origId); 2541 return foundParentInTask; 2542 } 2543 /** 2544 * Perform the common clean-up of an activity record. This is called both 2545 * as part of destroyActivityLocked() (when destroying the client-side 2546 * representation) and cleaning things up as a result of its hosting 2547 * processing going away, in which case there is no remaining client-side 2548 * state to destroy so only the cleanup here is needed. 2549 */ 2550 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2551 boolean setState) { 2552 if (mResumedActivity == r) { 2553 mResumedActivity = null; 2554 } 2555 if (mService.mFocusedActivity == r) { 2556 mService.mFocusedActivity = null; 2557 } 2558 2559 r.configDestroy = false; 2560 r.frozenBeforeDestroy = false; 2561 2562 if (setState) { 2563 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2564 r.state = ActivityState.DESTROYED; 2565 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2566 r.app = null; 2567 } 2568 2569 // Make sure this record is no longer in the pending finishes list. 2570 // This could happen, for example, if we are trimming activities 2571 // down to the max limit while they are still waiting to finish. 2572 mStackSupervisor.mFinishingActivities.remove(r); 2573 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2574 2575 // Remove any pending results. 2576 if (r.finishing && r.pendingResults != null) { 2577 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2578 PendingIntentRecord rec = apr.get(); 2579 if (rec != null) { 2580 mService.cancelIntentSenderLocked(rec, false); 2581 } 2582 } 2583 r.pendingResults = null; 2584 } 2585 2586 if (cleanServices) { 2587 cleanUpActivityServicesLocked(r); 2588 } 2589 2590 if (!mService.mPendingThumbnails.isEmpty()) { 2591 // There are clients waiting to receive thumbnails so, in case 2592 // this is an activity that someone is waiting for, add it 2593 // to the pending list so we can correctly update the clients. 2594 mStackSupervisor.mCancelledThumbnails.add(r); 2595 } 2596 2597 // Get rid of any pending idle timeouts. 2598 removeTimeoutsForActivityLocked(r); 2599 } 2600 2601 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2602 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2603 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2604 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2605 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2606 r.finishLaunchTickingLocked(); 2607 } 2608 2609 final void removeActivityFromHistoryLocked(ActivityRecord r) { 2610 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2611 r.makeFinishing(); 2612 if (DEBUG_ADD_REMOVE) { 2613 RuntimeException here = new RuntimeException("here"); 2614 here.fillInStackTrace(); 2615 Slog.i(TAG, "Removing activity " + r + " from stack"); 2616 } 2617 final TaskRecord task = r.task; 2618 if (task != null && task.removeActivity(r)) { 2619 if (DEBUG_STACK) Slog.i(TAG, 2620 "removeActivityFromHistoryLocked: last activity removed from " + this); 2621 mStackSupervisor.removeTask(task); 2622 } 2623 r.takeFromHistory(); 2624 removeTimeoutsForActivityLocked(r); 2625 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2626 r.state = ActivityState.DESTROYED; 2627 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2628 r.app = null; 2629 mWindowManager.removeAppToken(r.appToken); 2630 if (VALIDATE_TOKENS) { 2631 validateAppTokensLocked(); 2632 } 2633 cleanUpActivityServicesLocked(r); 2634 r.removeUriPermissionsLocked(); 2635 } 2636 2637 /** 2638 * Perform clean-up of service connections in an activity record. 2639 */ 2640 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2641 // Throw away any services that have been bound by this activity. 2642 if (r.connections != null) { 2643 Iterator<ConnectionRecord> it = r.connections.iterator(); 2644 while (it.hasNext()) { 2645 ConnectionRecord c = it.next(); 2646 mService.mServices.removeConnectionLocked(c, null, r); 2647 } 2648 r.connections = null; 2649 } 2650 } 2651 2652 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2653 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2654 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2655 mHandler.sendMessage(msg); 2656 } 2657 2658 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2659 boolean lastIsOpaque = false; 2660 boolean activityRemoved = false; 2661 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2662 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2663 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2664 final ActivityRecord r = activities.get(activityNdx); 2665 if (r.finishing) { 2666 continue; 2667 } 2668 if (r.fullscreen) { 2669 lastIsOpaque = true; 2670 } 2671 if (owner != null && r.app != owner) { 2672 continue; 2673 } 2674 if (!lastIsOpaque) { 2675 continue; 2676 } 2677 // We can destroy this one if we have its icicle saved and 2678 // it is not in the process of pausing/stopping/finishing. 2679 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2680 && r.haveState && !r.visible && r.stopped 2681 && r.state != ActivityState.DESTROYING 2682 && r.state != ActivityState.DESTROYED) { 2683 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2684 + " resumed=" + mResumedActivity 2685 + " pausing=" + mPausingActivity); 2686 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2687 activityRemoved = true; 2688 } 2689 } 2690 } 2691 } 2692 if (activityRemoved) { 2693 mStackSupervisor.resumeTopActivitiesLocked(); 2694 2695 } 2696 } 2697 2698 /** 2699 * Destroy the current CLIENT SIDE instance of an activity. This may be 2700 * called both when actually finishing an activity, or when performing 2701 * a configuration switch where we destroy the current client-side object 2702 * but then create a new client-side object for this same HistoryRecord. 2703 */ 2704 final boolean destroyActivityLocked(ActivityRecord r, 2705 boolean removeFromApp, boolean oomAdj, String reason) { 2706 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2707 TAG, "Removing activity from " + reason + ": token=" + r 2708 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2709 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2710 r.userId, System.identityHashCode(r), 2711 r.task.taskId, r.shortComponentName, reason); 2712 2713 boolean removedFromHistory = false; 2714 2715 cleanUpActivityLocked(r, false, false); 2716 2717 final boolean hadApp = r.app != null; 2718 2719 if (hadApp) { 2720 if (removeFromApp) { 2721 r.app.activities.remove(r); 2722 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2723 mService.mHeavyWeightProcess = null; 2724 mService.mHandler.sendEmptyMessage( 2725 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2726 } 2727 if (r.app.activities.isEmpty()) { 2728 // No longer have activities, so update LRU list and oom adj. 2729 mService.updateLruProcessLocked(r.app, false, false); 2730 mService.updateOomAdjLocked(); 2731 } 2732 } 2733 2734 boolean skipDestroy = false; 2735 2736 try { 2737 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2738 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2739 r.configChangeFlags); 2740 } catch (Exception e) { 2741 // We can just ignore exceptions here... if the process 2742 // has crashed, our death notification will clean things 2743 // up. 2744 //Slog.w(TAG, "Exception thrown during finish", e); 2745 if (r.finishing) { 2746 removeActivityFromHistoryLocked(r); 2747 removedFromHistory = true; 2748 skipDestroy = true; 2749 } 2750 } 2751 2752 r.nowVisible = false; 2753 2754 // If the activity is finishing, we need to wait on removing it 2755 // from the list to give it a chance to do its cleanup. During 2756 // that time it may make calls back with its token so we need to 2757 // be able to find it on the list and so we don't want to remove 2758 // it from the list yet. Otherwise, we can just immediately put 2759 // it in the destroyed state since we are not removing it from the 2760 // list. 2761 if (r.finishing && !skipDestroy) { 2762 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2763 + " (destroy requested)"); 2764 r.state = ActivityState.DESTROYING; 2765 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2766 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2767 } else { 2768 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2769 r.state = ActivityState.DESTROYED; 2770 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2771 r.app = null; 2772 } 2773 } else { 2774 // remove this record from the history. 2775 if (r.finishing) { 2776 removeActivityFromHistoryLocked(r); 2777 removedFromHistory = true; 2778 } else { 2779 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2780 r.state = ActivityState.DESTROYED; 2781 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2782 r.app = null; 2783 } 2784 } 2785 2786 r.configChangeFlags = 0; 2787 2788 if (!mLRUActivities.remove(r) && hadApp) { 2789 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2790 } 2791 2792 return removedFromHistory; 2793 } 2794 2795 final void activityDestroyedLocked(IBinder token) { 2796 final long origId = Binder.clearCallingIdentity(); 2797 try { 2798 ActivityRecord r = ActivityRecord.forToken(token); 2799 if (r != null) { 2800 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2801 } 2802 2803 if (isInStackLocked(token) != null) { 2804 if (r.state == ActivityState.DESTROYING) { 2805 cleanUpActivityLocked(r, true, false); 2806 removeActivityFromHistoryLocked(r); 2807 } 2808 } 2809 mStackSupervisor.resumeTopActivitiesLocked(); 2810 } finally { 2811 Binder.restoreCallingIdentity(origId); 2812 } 2813 } 2814 2815 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 2816 ProcessRecord app, String listName) { 2817 int i = list.size(); 2818 if (DEBUG_CLEANUP) Slog.v( 2819 TAG, "Removing app " + app + " from list " + listName 2820 + " with " + i + " entries"); 2821 while (i > 0) { 2822 i--; 2823 ActivityRecord r = list.get(i); 2824 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 2825 if (r.app == app) { 2826 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 2827 list.remove(i); 2828 removeTimeoutsForActivityLocked(r); 2829 } 2830 } 2831 } 2832 2833 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 2834 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 2835 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 2836 "mStoppingActivities"); 2837 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 2838 "mGoingToSleepActivities"); 2839 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 2840 "mWaitingVisibleActivities"); 2841 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 2842 "mFinishingActivities"); 2843 2844 boolean hasVisibleActivities = false; 2845 2846 // Clean out the history list. 2847 int i = numActivities(); 2848 if (DEBUG_CLEANUP) Slog.v( 2849 TAG, "Removing app " + app + " from history with " + i + " entries"); 2850 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2851 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2852 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2853 final ActivityRecord r = activities.get(activityNdx); 2854 --i; 2855 if (DEBUG_CLEANUP) Slog.v( 2856 TAG, "Record #" + i + " " + r + ": app=" + r.app); 2857 if (r.app == app) { 2858 boolean remove; 2859 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 2860 // Don't currently have state for the activity, or 2861 // it is finishing -- always remove it. 2862 remove = true; 2863 } else if (r.launchCount > 2 && 2864 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 2865 // We have launched this activity too many times since it was 2866 // able to run, so give up and remove it. 2867 remove = true; 2868 } else { 2869 // The process may be gone, but the activity lives on! 2870 remove = false; 2871 } 2872 if (remove) { 2873 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 2874 RuntimeException here = new RuntimeException("here"); 2875 here.fillInStackTrace(); 2876 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 2877 + ": haveState=" + r.haveState 2878 + " stateNotNeeded=" + r.stateNotNeeded 2879 + " finishing=" + r.finishing 2880 + " state=" + r.state, here); 2881 } 2882 if (!r.finishing) { 2883 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 2884 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2885 r.userId, System.identityHashCode(r), 2886 r.task.taskId, r.shortComponentName, 2887 "proc died without state saved"); 2888 if (r.state == ActivityState.RESUMED) { 2889 mService.updateUsageStats(r, false); 2890 } 2891 } 2892 removeActivityFromHistoryLocked(r); 2893 2894 } else { 2895 // We have the current state for this activity, so 2896 // it can be restarted later when needed. 2897 if (localLOGV) Slog.v( 2898 TAG, "Keeping entry, setting app to null"); 2899 if (r.visible) { 2900 hasVisibleActivities = true; 2901 } 2902 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 2903 + r); 2904 r.app = null; 2905 r.nowVisible = false; 2906 if (!r.haveState) { 2907 if (DEBUG_SAVED_STATE) Slog.i(TAG, 2908 "App died, clearing saved state of " + r); 2909 r.icicle = null; 2910 } 2911 } 2912 2913 cleanUpActivityLocked(r, true, true); 2914 } 2915 } 2916 } 2917 2918 return hasVisibleActivities; 2919 } 2920 2921 final void updateTransitLocked(int transit, Bundle options) { 2922 if (options != null) { 2923 ActivityRecord r = topRunningActivityLocked(null); 2924 if (r != null && r.state != ActivityState.RESUMED) { 2925 r.updateOptionsLocked(options); 2926 } else { 2927 ActivityOptions.abort(options); 2928 } 2929 } 2930 mWindowManager.prepareAppTransition(transit, false); 2931 } 2932 2933 void moveHomeTaskToTop() { 2934 final int top = mTaskHistory.size() - 1; 2935 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 2936 final TaskRecord task = mTaskHistory.get(taskNdx); 2937 if (task.isHomeTask()) { 2938 mTaskHistory.remove(taskNdx); 2939 mTaskHistory.add(top, task); 2940 mWindowManager.moveTaskToTop(task.taskId); 2941 return; 2942 } 2943 } 2944 } 2945 2946 final boolean findTaskToMoveToFrontLocked(int taskId, int flags, Bundle options) { 2947 final TaskRecord task = taskForIdLocked(taskId); 2948 if (task != null) { 2949 if ((flags & ActivityManager.MOVE_TASK_NO_USER_ACTION) == 0) { 2950 mStackSupervisor.mUserLeaving = true; 2951 } 2952 if ((flags & ActivityManager.MOVE_TASK_WITH_HOME) != 0) { 2953 // Caller wants the home activity moved with it. To accomplish this, 2954 // we'll just indicate that this task returns to the home task. 2955 task.mOnTopOfHome = true; 2956 } 2957 moveTaskToFrontLocked(task, null, options); 2958 return true; 2959 } 2960 return false; 2961 } 2962 2963 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 2964 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 2965 2966 final int numTasks = mTaskHistory.size(); 2967 final int index = mTaskHistory.indexOf(tr); 2968 if (numTasks == 0 || index < 0) { 2969 // nothing to do! 2970 if (reason != null && 2971 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 2972 ActivityOptions.abort(options); 2973 } else { 2974 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 2975 } 2976 return; 2977 } 2978 2979 mStackSupervisor.moveHomeStack(isHomeStack()); 2980 2981 // Shift all activities with this task up to the top 2982 // of the stack, keeping them in the same internal order. 2983 insertTaskAtTop(tr); 2984 2985 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 2986 if (reason != null && 2987 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 2988 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 2989 ActivityRecord r = topRunningActivityLocked(null); 2990 if (r != null) { 2991 mNoAnimActivities.add(r); 2992 } 2993 ActivityOptions.abort(options); 2994 } else { 2995 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 2996 } 2997 2998 mWindowManager.moveTaskToTop(tr.taskId); 2999 3000 mStackSupervisor.resumeTopActivitiesLocked(); 3001 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3002 3003 if (VALIDATE_TOKENS) { 3004 validateAppTokensLocked(); 3005 } 3006 } 3007 3008 /** 3009 * Worker method for rearranging history stack. Implements the function of moving all 3010 * activities for a specific task (gathering them if disjoint) into a single group at the 3011 * bottom of the stack. 3012 * 3013 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3014 * to premeptively cancel the move. 3015 * 3016 * @param taskId The taskId to collect and move to the bottom. 3017 * @return Returns true if the move completed, false if not. 3018 */ 3019 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3020 Slog.i(TAG, "moveTaskToBack: " + taskId); 3021 3022 // If we have a watcher, preflight the move before committing to it. First check 3023 // for *other* available tasks, but if none are available, then try again allowing the 3024 // current task to be selected. 3025 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3026 ActivityRecord next = topRunningActivityLocked(null, taskId); 3027 if (next == null) { 3028 next = topRunningActivityLocked(null, 0); 3029 } 3030 if (next != null) { 3031 // ask watcher if this is allowed 3032 boolean moveOK = true; 3033 try { 3034 moveOK = mService.mController.activityResuming(next.packageName); 3035 } catch (RemoteException e) { 3036 mService.mController = null; 3037 Watchdog.getInstance().setActivityController(null); 3038 } 3039 if (!moveOK) { 3040 return false; 3041 } 3042 } 3043 } 3044 3045 if (DEBUG_TRANSITION) Slog.v(TAG, 3046 "Prepare to back transition: task=" + taskId); 3047 3048 final TaskRecord tr = taskForIdLocked(taskId); 3049 if (tr == null) { 3050 return false; 3051 } 3052 3053 mTaskHistory.remove(tr); 3054 mTaskHistory.add(0, tr); 3055 3056 // There is an assumption that moving a task to the back moves it behind the home activity. 3057 // We make sure here that some activity in the stack will launch home. 3058 ActivityRecord lastActivity = null; 3059 int numTasks = mTaskHistory.size(); 3060 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3061 final TaskRecord task = mTaskHistory.get(taskNdx); 3062 if (task.mOnTopOfHome) { 3063 break; 3064 } 3065 if (taskNdx == 1) { 3066 // Set the last task before tr to go to home. 3067 task.mOnTopOfHome = true; 3068 } 3069 } 3070 3071 if (reason != null && 3072 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3073 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3074 ActivityRecord r = topRunningActivityLocked(null); 3075 if (r != null) { 3076 mNoAnimActivities.add(r); 3077 } 3078 } else { 3079 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3080 } 3081 mWindowManager.moveTaskToBottom(taskId); 3082 3083 if (VALIDATE_TOKENS) { 3084 validateAppTokensLocked(); 3085 } 3086 3087 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3088 if (task == tr && task.mOnTopOfHome || numTasks <= 1) { 3089 task.mOnTopOfHome = false; 3090 return mStackSupervisor.resumeHomeActivity(null); 3091 } 3092 3093 mStackSupervisor.resumeTopActivitiesLocked(); 3094 return true; 3095 } 3096 3097 static final void logStartActivity(int tag, ActivityRecord r, 3098 TaskRecord task) { 3099 final Uri data = r.intent.getData(); 3100 final String strData = data != null ? data.toSafeString() : null; 3101 3102 EventLog.writeEvent(tag, 3103 r.userId, System.identityHashCode(r), task.taskId, 3104 r.shortComponentName, r.intent.getAction(), 3105 r.intent.getType(), strData, r.intent.getFlags()); 3106 } 3107 3108 /** 3109 * Make sure the given activity matches the current configuration. Returns 3110 * false if the activity had to be destroyed. Returns true if the 3111 * configuration is the same, or the activity will remain running as-is 3112 * for whatever reason. Ensures the HistoryRecord is updated with the 3113 * correct configuration and all other bookkeeping is handled. 3114 */ 3115 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3116 int globalChanges) { 3117 if (mConfigWillChange) { 3118 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3119 "Skipping config check (will change): " + r); 3120 return true; 3121 } 3122 3123 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3124 "Ensuring correct configuration: " + r); 3125 3126 // Short circuit: if the two configurations are the exact same 3127 // object (the common case), then there is nothing to do. 3128 Configuration newConfig = mService.mConfiguration; 3129 if (r.configuration == newConfig && !r.forceNewConfig) { 3130 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3131 "Configuration unchanged in " + r); 3132 return true; 3133 } 3134 3135 // We don't worry about activities that are finishing. 3136 if (r.finishing) { 3137 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3138 "Configuration doesn't matter in finishing " + r); 3139 r.stopFreezingScreenLocked(false); 3140 return true; 3141 } 3142 3143 // Okay we now are going to make this activity have the new config. 3144 // But then we need to figure out how it needs to deal with that. 3145 Configuration oldConfig = r.configuration; 3146 r.configuration = newConfig; 3147 3148 // Determine what has changed. May be nothing, if this is a config 3149 // that has come back from the app after going idle. In that case 3150 // we just want to leave the official config object now in the 3151 // activity and do nothing else. 3152 final int changes = oldConfig.diff(newConfig); 3153 if (changes == 0 && !r.forceNewConfig) { 3154 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3155 "Configuration no differences in " + r); 3156 return true; 3157 } 3158 3159 // If the activity isn't currently running, just leave the new 3160 // configuration and it will pick that up next time it starts. 3161 if (r.app == null || r.app.thread == null) { 3162 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3163 "Configuration doesn't matter not running " + r); 3164 r.stopFreezingScreenLocked(false); 3165 r.forceNewConfig = false; 3166 return true; 3167 } 3168 3169 // Figure out how to handle the changes between the configurations. 3170 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3171 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3172 + Integer.toHexString(changes) + ", handles=0x" 3173 + Integer.toHexString(r.info.getRealConfigChanged()) 3174 + ", newConfig=" + newConfig); 3175 } 3176 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3177 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3178 r.configChangeFlags |= changes; 3179 r.startFreezingScreenLocked(r.app, globalChanges); 3180 r.forceNewConfig = false; 3181 if (r.app == null || r.app.thread == null) { 3182 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3183 "Config is destroying non-running " + r); 3184 destroyActivityLocked(r, true, false, "config"); 3185 } else if (r.state == ActivityState.PAUSING) { 3186 // A little annoying: we are waiting for this activity to 3187 // finish pausing. Let's not do anything now, but just 3188 // flag that it needs to be restarted when done pausing. 3189 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3190 "Config is skipping already pausing " + r); 3191 r.configDestroy = true; 3192 return true; 3193 } else if (r.state == ActivityState.RESUMED) { 3194 // Try to optimize this case: the configuration is changing 3195 // and we need to restart the top, resumed activity. 3196 // Instead of doing the normal handshaking, just say 3197 // "restart!". 3198 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3199 "Config is relaunching resumed " + r); 3200 relaunchActivityLocked(r, r.configChangeFlags, true); 3201 r.configChangeFlags = 0; 3202 } else { 3203 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3204 "Config is relaunching non-resumed " + r); 3205 relaunchActivityLocked(r, r.configChangeFlags, false); 3206 r.configChangeFlags = 0; 3207 } 3208 3209 // All done... tell the caller we weren't able to keep this 3210 // activity around. 3211 return false; 3212 } 3213 3214 // Default case: the activity can handle this new configuration, so 3215 // hand it over. Note that we don't need to give it the new 3216 // configuration, since we always send configuration changes to all 3217 // process when they happen so it can just use whatever configuration 3218 // it last got. 3219 if (r.app != null && r.app.thread != null) { 3220 try { 3221 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3222 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3223 } catch (RemoteException e) { 3224 // If process died, whatever. 3225 } 3226 } 3227 r.stopFreezingScreenLocked(false); 3228 3229 return true; 3230 } 3231 3232 private boolean relaunchActivityLocked(ActivityRecord r, 3233 int changes, boolean andResume) { 3234 List<ResultInfo> results = null; 3235 List<Intent> newIntents = null; 3236 if (andResume) { 3237 results = r.results; 3238 newIntents = r.newIntents; 3239 } 3240 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3241 + " with results=" + results + " newIntents=" + newIntents 3242 + " andResume=" + andResume); 3243 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3244 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3245 r.task.taskId, r.shortComponentName); 3246 3247 r.startFreezingScreenLocked(r.app, 0); 3248 3249 try { 3250 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3251 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3252 + r); 3253 r.forceNewConfig = false; 3254 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3255 changes, !andResume, new Configuration(mService.mConfiguration)); 3256 // Note: don't need to call pauseIfSleepingLocked() here, because 3257 // the caller will only pass in 'andResume' if this activity is 3258 // currently resumed, which implies we aren't sleeping. 3259 } catch (RemoteException e) { 3260 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3261 } 3262 3263 if (andResume) { 3264 r.results = null; 3265 r.newIntents = null; 3266 r.state = ActivityState.RESUMED; 3267 } else { 3268 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3269 r.state = ActivityState.PAUSED; 3270 } 3271 3272 return true; 3273 } 3274 3275 boolean willActivityBeVisibleLocked(IBinder token) { 3276 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3277 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3278 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3279 final ActivityRecord r = activities.get(activityNdx); 3280 if (r.appToken == token) { 3281 return true; 3282 } 3283 if (r.fullscreen && !r.finishing) { 3284 return false; 3285 } 3286 } 3287 } 3288 return true; 3289 } 3290 3291 void closeSystemDialogsLocked() { 3292 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3293 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3294 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3295 final ActivityRecord r = activities.get(activityNdx); 3296 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3297 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3298 } 3299 } 3300 } 3301 } 3302 3303 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3304 boolean didSomething = false; 3305 TaskRecord lastTask = null; 3306 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3307 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3308 int numActivities = activities.size(); 3309 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3310 ActivityRecord r = activities.get(activityNdx); 3311 final boolean samePackage = r.packageName.equals(name) 3312 || (name == null && r.userId == userId); 3313 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3314 && (samePackage || r.task == lastTask) 3315 && (r.app == null || evenPersistent || !r.app.persistent)) { 3316 if (!doit) { 3317 if (r.finishing) { 3318 // If this activity is just finishing, then it is not 3319 // interesting as far as something to stop. 3320 continue; 3321 } 3322 return true; 3323 } 3324 didSomething = true; 3325 Slog.i(TAG, " Force finishing activity " + r); 3326 if (samePackage) { 3327 if (r.app != null) { 3328 r.app.removed = true; 3329 } 3330 r.app = null; 3331 } 3332 lastTask = r.task; 3333 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3334 true)) { 3335 // r has been deleted from mActivities, accommodate. 3336 --numActivities; 3337 --activityNdx; 3338 } 3339 } 3340 } 3341 } 3342 return didSomething; 3343 } 3344 3345 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3346 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3347 ActivityRecord topRecord = null; 3348 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3349 final TaskRecord task = mTaskHistory.get(taskNdx); 3350 ActivityRecord r = null; 3351 ActivityRecord top = null; 3352 int numActivities = 0; 3353 int numRunning = 0; 3354 final ArrayList<ActivityRecord> activities = task.mActivities; 3355 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3356 r = activities.get(activityNdx); 3357 3358 // Initialize state for next task if needed. 3359 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3360 top = r; 3361 numActivities = numRunning = 0; 3362 } 3363 3364 // Add 'r' into the current task. 3365 numActivities++; 3366 if (r.app != null && r.app.thread != null) { 3367 numRunning++; 3368 } 3369 3370 if (localLOGV) Slog.v( 3371 TAG, r.intent.getComponent().flattenToShortString() 3372 + ": task=" + r.task); 3373 } 3374 3375 RunningTaskInfo ci = new RunningTaskInfo(); 3376 ci.id = task.taskId; 3377 ci.baseActivity = r.intent.getComponent(); 3378 ci.topActivity = top.intent.getComponent(); 3379 ci.lastActiveTime = task.lastActiveTime; 3380 3381 if (top.thumbHolder != null) { 3382 ci.description = top.thumbHolder.lastDescription; 3383 } 3384 ci.numActivities = numActivities; 3385 ci.numRunning = numRunning; 3386 //System.out.println( 3387 // "#" + maxNum + ": " + " descr=" + ci.description); 3388 if (receiver != null) { 3389 if (localLOGV) Slog.v( 3390 TAG, "State=" + top.state + "Idle=" + top.idle 3391 + " app=" + top.app 3392 + " thr=" + (top.app != null ? top.app.thread : null)); 3393 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3394 if (top.idle && top.app != null && top.app.thread != null) { 3395 topRecord = top; 3396 } else { 3397 top.thumbnailNeeded = true; 3398 } 3399 } 3400 pending.pendingRecords.add(top); 3401 } 3402 list.add(ci); 3403 } 3404 return topRecord; 3405 } 3406 3407 public void unhandledBackLocked() { 3408 final int top = mTaskHistory.size() - 1; 3409 if (DEBUG_SWITCH) Slog.d( 3410 TAG, "Performing unhandledBack(): top activity at " + top); 3411 if (top >= 0) { 3412 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3413 int activityTop = activities.size() - 1; 3414 if (activityTop > 0) { 3415 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3416 "unhandled-back", true); 3417 } 3418 } 3419 } 3420 3421 /** 3422 * Reset local parameters because an app's activity died. 3423 * @param app The app of the activity that died. 3424 * @return result from removeHistoryRecordsForAppLocked. 3425 */ 3426 boolean handleAppDiedLocked(ProcessRecord app) { 3427 if (mPausingActivity != null && mPausingActivity.app == app) { 3428 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3429 "App died while pausing: " + mPausingActivity); 3430 mPausingActivity = null; 3431 } 3432 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3433 mLastPausedActivity = null; 3434 mLastNoHistoryActivity = null; 3435 } 3436 3437 return removeHistoryRecordsForAppLocked(app); 3438 } 3439 3440 void handleAppCrashLocked(ProcessRecord app) { 3441 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3442 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3443 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3444 final ActivityRecord r = activities.get(activityNdx); 3445 if (r.app == app) { 3446 Slog.w(TAG, " Force finishing activity " 3447 + r.intent.getComponent().flattenToShortString()); 3448 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3449 } 3450 } 3451 } 3452 } 3453 3454 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3455 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3456 boolean printed = false; 3457 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3458 final TaskRecord task = mTaskHistory.get(taskNdx); 3459 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3460 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3461 dumpClient, dumpPackage, needSep, header, 3462 " Task id #" + task.taskId); 3463 if (printed) { 3464 header = null; 3465 } 3466 } 3467 return printed; 3468 } 3469 3470 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3471 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3472 3473 if ("all".equals(name)) { 3474 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3475 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3476 } 3477 } else if ("top".equals(name)) { 3478 final int top = mTaskHistory.size() - 1; 3479 if (top >= 0) { 3480 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3481 int listTop = list.size() - 1; 3482 if (listTop >= 0) { 3483 activities.add(list.get(listTop)); 3484 } 3485 } 3486 } else { 3487 ItemMatcher matcher = new ItemMatcher(); 3488 matcher.build(name); 3489 3490 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3491 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3492 if (matcher.match(r1, r1.intent.getComponent())) { 3493 activities.add(r1); 3494 } 3495 } 3496 } 3497 } 3498 3499 return activities; 3500 } 3501 3502 ActivityRecord restartPackage(String packageName) { 3503 ActivityRecord starting = topRunningActivityLocked(null); 3504 3505 // All activities that came from the package must be 3506 // restarted as if there was a config change. 3507 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3508 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3509 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3510 final ActivityRecord a = activities.get(activityNdx); 3511 if (a.info.packageName.equals(packageName)) { 3512 a.forceNewConfig = true; 3513 if (starting != null && a == starting && a.visible) { 3514 a.startFreezingScreenLocked(starting.app, 3515 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3516 } 3517 } 3518 } 3519 } 3520 3521 return starting; 3522 } 3523 3524 boolean removeTask(TaskRecord task) { 3525 final int taskNdx = mTaskHistory.indexOf(task); 3526 final int topTaskNdx = mTaskHistory.size() - 1; 3527 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3528 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3529 } 3530 mTaskHistory.remove(task); 3531 return mTaskHistory.isEmpty(); 3532 } 3533 3534 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, boolean toTop) { 3535 TaskRecord task = new TaskRecord(taskId, info, intent); 3536 addTask(task, toTop); 3537 return task; 3538 } 3539 3540 ArrayList<TaskRecord> getAllTasks() { 3541 return new ArrayList<TaskRecord>(mTaskHistory); 3542 } 3543 3544 void addTask(final TaskRecord task, final boolean toTop) { 3545 task.stack = this; 3546 if (toTop) { 3547 insertTaskAtTop(task); 3548 } else { 3549 mTaskHistory.add(0, task); 3550 } 3551 } 3552 3553 public int getStackId() { 3554 return mStackId; 3555 } 3556 3557 @Override 3558 public String toString() { 3559 return "stackId=" + mStackId + " tasks=" + mTaskHistory; 3560 } 3561} 3562