ActivityStack.java revision e67a784eb2c914c04c62ea5dfa1e3751df5582cc
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.ActivityRecord.HOME_ACTIVITY_TYPE; 34import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE; 35import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE; 36 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 38import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 39import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 40import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 41import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 42 43import android.service.voice.IVoiceInteractionSession; 44import com.android.internal.app.IVoiceInteractor; 45import com.android.internal.os.BatteryStatsImpl; 46import com.android.server.Watchdog; 47import com.android.server.am.ActivityManagerService.ItemMatcher; 48import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 49import com.android.server.wm.AppTransition; 50import com.android.server.wm.TaskGroup; 51import com.android.server.wm.WindowManagerService; 52 53import android.app.Activity; 54import android.app.ActivityManager; 55import android.app.ActivityOptions; 56import android.app.AppGlobals; 57import android.app.IActivityController; 58import android.app.ResultInfo; 59import android.app.ActivityManager.RunningTaskInfo; 60import android.content.ComponentName; 61import android.content.Intent; 62import android.content.pm.ActivityInfo; 63import android.content.pm.PackageManager; 64import android.content.res.Configuration; 65import android.content.res.Resources; 66import android.graphics.Bitmap; 67import android.net.Uri; 68import android.os.Binder; 69import android.os.Bundle; 70import android.os.Debug; 71import android.os.Handler; 72import android.os.IBinder; 73import android.os.Looper; 74import android.os.Message; 75import android.os.PersistableBundle; 76import android.os.RemoteException; 77import android.os.SystemClock; 78import android.os.Trace; 79import android.os.UserHandle; 80import android.util.EventLog; 81import android.util.Slog; 82import android.view.Display; 83 84import java.io.FileDescriptor; 85import java.io.PrintWriter; 86import java.lang.ref.WeakReference; 87import java.util.ArrayList; 88import java.util.Iterator; 89import java.util.List; 90import java.util.Objects; 91 92/** 93 * State and management of a single stack of activities. 94 */ 95final class ActivityStack { 96 97 // Ticks during which we check progress while waiting for an app to launch. 98 static final int LAUNCH_TICK = 500; 99 100 // How long we wait until giving up on the last activity to pause. This 101 // is short because it directly impacts the responsiveness of starting the 102 // next activity. 103 static final int PAUSE_TIMEOUT = 500; 104 105 // How long we wait for the activity to tell us it has stopped before 106 // giving up. This is a good amount of time because we really need this 107 // from the application in order to get its saved state. 108 static final int STOP_TIMEOUT = 10*1000; 109 110 // How long we wait until giving up on an activity telling us it has 111 // finished destroying itself. 112 static final int DESTROY_TIMEOUT = 10*1000; 113 114 // How long until we reset a task when the user returns to it. Currently 115 // disabled. 116 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 117 118 // How long between activity launches that we consider safe to not warn 119 // the user about an unexpected activity being launched on top. 120 static final long START_WARN_TIME = 5*1000; 121 122 // Set to false to disable the preview that is shown while a new activity 123 // is being started. 124 static final boolean SHOW_APP_STARTING_PREVIEW = true; 125 126 // How long to wait for all background Activities to redraw following a call to 127 // convertToTranslucent(). 128 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 129 130 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 131 132 enum ActivityState { 133 INITIALIZING, 134 RESUMED, 135 PAUSING, 136 PAUSED, 137 STOPPING, 138 STOPPED, 139 FINISHING, 140 DESTROYING, 141 DESTROYED 142 } 143 144 final ActivityManagerService mService; 145 final WindowManagerService mWindowManager; 146 147 /** 148 * The back history of all previous (and possibly still 149 * running) activities. It contains #TaskRecord objects. 150 */ 151 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 152 153 /** 154 * Used for validating app tokens with window manager. 155 */ 156 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 157 158 /** 159 * List of running activities, sorted by recent usage. 160 * The first entry in the list is the least recently used. 161 * It contains HistoryRecord objects. 162 */ 163 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 164 165 /** 166 * Animations that for the current transition have requested not to 167 * be considered for the transition animation. 168 */ 169 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 170 171 /** 172 * When we are in the process of pausing an activity, before starting the 173 * next one, this variable holds the activity that is currently being paused. 174 */ 175 ActivityRecord mPausingActivity = null; 176 177 /** 178 * This is the last activity that we put into the paused state. This is 179 * used to determine if we need to do an activity transition while sleeping, 180 * when we normally hold the top activity paused. 181 */ 182 ActivityRecord mLastPausedActivity = null; 183 184 /** 185 * Activities that specify No History must be removed once the user navigates away from them. 186 * If the device goes to sleep with such an activity in the paused state then we save it here 187 * and finish it later if another activity replaces it on wakeup. 188 */ 189 ActivityRecord mLastNoHistoryActivity = null; 190 191 /** 192 * Current activity that is resumed, or null if there is none. 193 */ 194 ActivityRecord mResumedActivity = null; 195 196 /** 197 * This is the last activity that has been started. It is only used to 198 * identify when multiple activities are started at once so that the user 199 * can be warned they may not be in the activity they think they are. 200 */ 201 ActivityRecord mLastStartedActivity = null; 202 203 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 204 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 205 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 206 // Activity in mTranslucentActivityWaiting is notified via 207 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 208 // background activity being drawn then the same call will be made with a true value. 209 ActivityRecord mTranslucentActivityWaiting = null; 210 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 211 new ArrayList<ActivityRecord>(); 212 // Options passed from the caller of the convertToTranslucent to the activity that will 213 // appear below it. 214 ActivityOptions mReturningActivityOptions = null; 215 216 /** 217 * Set when we know we are going to be calling updateConfiguration() 218 * soon, so want to skip intermediate config checks. 219 */ 220 boolean mConfigWillChange; 221 222 long mLaunchStartTime = 0; 223 long mFullyDrawnStartTime = 0; 224 225 /** 226 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 227 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 228 */ 229 private ActivityRecord mLastScreenshotActivity = null; 230 private Bitmap mLastScreenshotBitmap = null; 231 232 int mThumbnailWidth = -1; 233 int mThumbnailHeight = -1; 234 235 int mCurrentUser; 236 237 final int mStackId; 238 final ActivityContainer mActivityContainer; 239 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 240 ArrayList<ActivityStack> mStacks; 241 /** The attached Display's unique identifier, or -1 if detached */ 242 int mDisplayId; 243 244 /** Run all ActivityStacks through this */ 245 final ActivityStackSupervisor mStackSupervisor; 246 247 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 248 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 249 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 250 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 251 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 252 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 253 254 static class ScheduleDestroyArgs { 255 final ProcessRecord mOwner; 256 final boolean mOomAdj; 257 final String mReason; 258 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 259 mOwner = owner; 260 mOomAdj = oomAdj; 261 mReason = reason; 262 } 263 } 264 265 final Handler mHandler; 266 267 final class ActivityStackHandler extends Handler { 268 //public Handler() { 269 // if (localLOGV) Slog.v(TAG, "Handler started!"); 270 //} 271 ActivityStackHandler(Looper looper) { 272 super(looper); 273 } 274 275 @Override 276 public void handleMessage(Message msg) { 277 switch (msg.what) { 278 case PAUSE_TIMEOUT_MSG: { 279 ActivityRecord r = (ActivityRecord)msg.obj; 280 // We don't at this point know if the activity is fullscreen, 281 // so we need to be conservative and assume it isn't. 282 Slog.w(TAG, "Activity pause timeout for " + r); 283 synchronized (mService) { 284 if (r.app != null) { 285 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 286 } 287 activityPausedLocked(r.appToken, true, r.persistentState); 288 } 289 } break; 290 case LAUNCH_TICK_MSG: { 291 ActivityRecord r = (ActivityRecord)msg.obj; 292 synchronized (mService) { 293 if (r.continueLaunchTickingLocked()) { 294 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 295 } 296 } 297 } break; 298 case DESTROY_TIMEOUT_MSG: { 299 ActivityRecord r = (ActivityRecord)msg.obj; 300 // We don't at this point know if the activity is fullscreen, 301 // so we need to be conservative and assume it isn't. 302 Slog.w(TAG, "Activity destroy timeout for " + r); 303 synchronized (mService) { 304 activityDestroyedLocked(r != null ? r.appToken : null); 305 } 306 } break; 307 case STOP_TIMEOUT_MSG: { 308 ActivityRecord r = (ActivityRecord)msg.obj; 309 // We don't at this point know if the activity is fullscreen, 310 // so we need to be conservative and assume it isn't. 311 Slog.w(TAG, "Activity stop timeout for " + r); 312 synchronized (mService) { 313 if (r.isInHistory()) { 314 activityStoppedLocked(r, null, null, null); 315 } 316 } 317 } break; 318 case DESTROY_ACTIVITIES_MSG: { 319 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 320 synchronized (mService) { 321 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 322 } 323 } break; 324 case TRANSLUCENT_TIMEOUT_MSG: { 325 synchronized (mService) { 326 notifyActivityDrawnLocked(null); 327 } 328 } break; 329 } 330 } 331 } 332 333 int numActivities() { 334 int count = 0; 335 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 336 count += mTaskHistory.get(taskNdx).mActivities.size(); 337 } 338 return count; 339 } 340 341 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 342 mActivityContainer = activityContainer; 343 mStackSupervisor = activityContainer.getOuter(); 344 mService = mStackSupervisor.mService; 345 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 346 mWindowManager = mService.mWindowManager; 347 mStackId = activityContainer.mStackId; 348 mCurrentUser = mService.mCurrentUserId; 349 } 350 351 /** 352 * Checks whether the userid is a profile of the current user. 353 */ 354 private boolean isCurrentProfileLocked(int userId) { 355 if (userId == mCurrentUser) return true; 356 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 357 if (mService.mCurrentProfileIds[i] == userId) return true; 358 } 359 return false; 360 } 361 362 boolean okToShowLocked(ActivityRecord r) { 363 return isCurrentProfileLocked(r.userId) 364 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 365 } 366 367 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 368 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 369 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 370 if (r != null) { 371 return r; 372 } 373 } 374 return null; 375 } 376 377 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 378 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 379 final TaskRecord task = mTaskHistory.get(taskNdx); 380 final ArrayList<ActivityRecord> activities = task.mActivities; 381 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 382 ActivityRecord r = activities.get(activityNdx); 383 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 384 return r; 385 } 386 } 387 } 388 return null; 389 } 390 391 /** 392 * This is a simplified version of topRunningActivityLocked that provides a number of 393 * optional skip-over modes. It is intended for use with the ActivityController hook only. 394 * 395 * @param token If non-null, any history records matching this token will be skipped. 396 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 397 * 398 * @return Returns the HistoryRecord of the next activity on the stack. 399 */ 400 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 401 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 402 TaskRecord task = mTaskHistory.get(taskNdx); 403 if (task.taskId == taskId) { 404 continue; 405 } 406 ArrayList<ActivityRecord> activities = task.mActivities; 407 for (int i = activities.size() - 1; i >= 0; --i) { 408 final ActivityRecord r = activities.get(i); 409 // Note: the taskId check depends on real taskId fields being non-zero 410 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 411 return r; 412 } 413 } 414 } 415 return null; 416 } 417 418 final ActivityRecord topActivity() { 419 // Iterate to find the first non-empty task stack. Note that this code can 420 // be simplified once we stop storing tasks with empty mActivities lists. 421 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 422 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 423 final int topActivityNdx = activities.size() - 1; 424 if (topActivityNdx >= 0) { 425 return activities.get(topActivityNdx); 426 } 427 } 428 return null; 429 } 430 431 final TaskRecord topTask() { 432 final int size = mTaskHistory.size(); 433 if (size > 0) { 434 return mTaskHistory.get(size - 1); 435 } 436 return null; 437 } 438 439 TaskRecord taskForIdLocked(int id) { 440 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 441 final TaskRecord task = mTaskHistory.get(taskNdx); 442 if (task.taskId == id) { 443 return task; 444 } 445 } 446 return null; 447 } 448 449 ActivityRecord isInStackLocked(IBinder token) { 450 final ActivityRecord r = ActivityRecord.forToken(token); 451 if (r != null) { 452 final TaskRecord task = r.task; 453 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 454 if (task.stack != this) Slog.w(TAG, 455 "Illegal state! task does not point to stack it is in."); 456 return r; 457 } 458 } 459 return null; 460 } 461 462 final boolean updateLRUListLocked(ActivityRecord r) { 463 final boolean hadit = mLRUActivities.remove(r); 464 mLRUActivities.add(r); 465 return hadit; 466 } 467 468 final boolean isHomeStack() { 469 return mStackId == HOME_STACK_ID; 470 } 471 472 final boolean isOnHomeDisplay() { 473 return isAttached() && 474 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 475 } 476 477 final void moveToFront() { 478 if (isAttached()) { 479 if (isOnHomeDisplay()) { 480 mStackSupervisor.moveHomeStack(isHomeStack()); 481 } 482 mStacks.remove(this); 483 mStacks.add(this); 484 } 485 } 486 487 final boolean isAttached() { 488 return mStacks != null; 489 } 490 491 /** 492 * Returns the top activity in any existing task matching the given 493 * Intent. Returns null if no such task is found. 494 */ 495 ActivityRecord findTaskLocked(ActivityRecord target) { 496 Intent intent = target.intent; 497 ActivityInfo info = target.info; 498 ComponentName cls = intent.getComponent(); 499 if (info.targetActivity != null) { 500 cls = new ComponentName(info.packageName, info.targetActivity); 501 } 502 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 503 boolean isDocument = intent != null & intent.isDocument(); 504 // If documentData is non-null then it must match the existing task data. 505 Uri documentData = isDocument ? intent.getData() : null; 506 507 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 508 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 509 final TaskRecord task = mTaskHistory.get(taskNdx); 510 if (task.voiceSession != null) { 511 // We never match voice sessions; those always run independently. 512 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 513 continue; 514 } 515 if (task.userId != userId) { 516 // Looking for a different task. 517 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 518 continue; 519 } 520 final ActivityRecord r = task.getTopActivity(); 521 if (r == null || r.finishing || r.userId != userId || 522 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 523 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 524 continue; 525 } 526 527 final Intent taskIntent = task.intent; 528 final Intent affinityIntent = task.affinityIntent; 529 final boolean taskIsDocument; 530 final Uri taskDocumentData; 531 if (taskIntent != null && taskIntent.isDocument()) { 532 taskIsDocument = true; 533 taskDocumentData = taskIntent.getData(); 534 } else if (affinityIntent != null && affinityIntent.isDocument()) { 535 taskIsDocument = true; 536 taskDocumentData = affinityIntent.getData(); 537 } else { 538 taskIsDocument = false; 539 taskDocumentData = null; 540 } 541 542 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 543 + taskIntent.getComponent().flattenToShortString() 544 + "/aff=" + r.task.affinity + " to new cls=" 545 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 546 if (!isDocument && !taskIsDocument && task.affinity != null) { 547 if (task.affinity.equals(target.taskAffinity)) { 548 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 549 return r; 550 } 551 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 552 Objects.equals(documentData, taskDocumentData)) { 553 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 554 //dump(); 555 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 556 + r.intent); 557 return r; 558 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 559 Objects.equals(documentData, taskDocumentData)) { 560 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 561 //dump(); 562 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 563 + r.intent); 564 return r; 565 } else if (DEBUG_TASKS) { 566 Slog.d(TAG, "Not a match: " + task); 567 } 568 } 569 570 return null; 571 } 572 573 /** 574 * Returns the first activity (starting from the top of the stack) that 575 * is the same as the given activity. Returns null if no such activity 576 * is found. 577 */ 578 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 579 ComponentName cls = intent.getComponent(); 580 if (info.targetActivity != null) { 581 cls = new ComponentName(info.packageName, info.targetActivity); 582 } 583 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 584 585 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 586 TaskRecord task = mTaskHistory.get(taskNdx); 587 if (!isCurrentProfileLocked(task.userId)) { 588 return null; 589 } 590 final ArrayList<ActivityRecord> activities = task.mActivities; 591 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 592 ActivityRecord r = activities.get(activityNdx); 593 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 594 //Slog.i(TAG, "Found matching class!"); 595 //dump(); 596 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 597 return r; 598 } 599 } 600 } 601 602 return null; 603 } 604 605 /* 606 * Move the activities around in the stack to bring a user to the foreground. 607 */ 608 final void switchUserLocked(int userId) { 609 if (mCurrentUser == userId) { 610 return; 611 } 612 mCurrentUser = userId; 613 614 // Move userId's tasks to the top. 615 int index = mTaskHistory.size(); 616 for (int i = 0; i < index; ) { 617 TaskRecord task = mTaskHistory.get(i); 618 if (isCurrentProfileLocked(task.userId)) { 619 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 620 " moving " + task + " to top"); 621 mTaskHistory.remove(i); 622 mTaskHistory.add(task); 623 --index; 624 // Use same value for i. 625 } else { 626 ++i; 627 } 628 } 629 if (VALIDATE_TOKENS) { 630 validateAppTokensLocked(); 631 } 632 } 633 634 void minimalResumeActivityLocked(ActivityRecord r) { 635 r.state = ActivityState.RESUMED; 636 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 637 + " (starting new instance)"); 638 r.stopped = false; 639 mResumedActivity = r; 640 r.task.touchActiveTime(); 641 mService.addRecentTaskLocked(r.task); 642 completeResumeLocked(r); 643 mStackSupervisor.checkReadyForSleepLocked(); 644 setLaunchTime(r); 645 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 646 } 647 648 private void startLaunchTraces() { 649 if (mFullyDrawnStartTime != 0) { 650 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 651 } 652 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 653 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 654 } 655 656 private void stopFullyDrawnTraceIfNeeded() { 657 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 658 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 659 mFullyDrawnStartTime = 0; 660 } 661 } 662 663 void setLaunchTime(ActivityRecord r) { 664 if (r.displayStartTime == 0) { 665 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 666 if (mLaunchStartTime == 0) { 667 startLaunchTraces(); 668 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 669 } 670 } else if (mLaunchStartTime == 0) { 671 startLaunchTraces(); 672 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 673 } 674 } 675 676 void clearLaunchTime(ActivityRecord r) { 677 // Make sure that there is no activity waiting for this to launch. 678 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 679 r.displayStartTime = r.fullyDrawnStartTime = 0; 680 } else { 681 mStackSupervisor.removeTimeoutsForActivityLocked(r); 682 mStackSupervisor.scheduleIdleTimeoutLocked(r); 683 } 684 } 685 686 void awakeFromSleepingLocked() { 687 // Ensure activities are no longer sleeping. 688 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 689 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 690 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 691 activities.get(activityNdx).setSleeping(false); 692 } 693 } 694 } 695 696 /** 697 * @return true if something must be done before going to sleep. 698 */ 699 boolean checkReadyForSleepLocked() { 700 if (mResumedActivity != null) { 701 // Still have something resumed; can't sleep until it is paused. 702 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 703 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 704 startPausingLocked(false, true); 705 return true; 706 } 707 if (mPausingActivity != null) { 708 // Still waiting for something to pause; can't sleep yet. 709 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 710 return true; 711 } 712 713 return false; 714 } 715 716 void goToSleep() { 717 ensureActivitiesVisibleLocked(null, 0); 718 719 // Make sure any stopped but visible activities are now sleeping. 720 // This ensures that the activity's onStop() is called. 721 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 722 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 723 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 724 final ActivityRecord r = activities.get(activityNdx); 725 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 726 r.setSleeping(true); 727 } 728 } 729 } 730 } 731 732 public final Bitmap screenshotActivities(ActivityRecord who) { 733 if (who.noDisplay) { 734 return null; 735 } 736 737 TaskRecord tr = who.task; 738 if (mService.getMostRecentTask() != tr && tr.intent != null && 739 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 740 // If this task is being excluded from recents, we don't want to take 741 // the expense of capturing a thumbnail, since we will never show it. 742 return null; 743 } 744 745 Resources res = mService.mContext.getResources(); 746 int w = mThumbnailWidth; 747 int h = mThumbnailHeight; 748 if (w < 0) { 749 mThumbnailWidth = w = 750 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 751 mThumbnailHeight = h = 752 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 753 } 754 755 if (w > 0) { 756 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 757 || mLastScreenshotActivity.state == ActivityState.RESUMED 758 || mLastScreenshotBitmap.getWidth() != w 759 || mLastScreenshotBitmap.getHeight() != h) { 760 mLastScreenshotActivity = who; 761 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 762 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 763 } 764 if (mLastScreenshotBitmap != null) { 765 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 766 } 767 } 768 return null; 769 } 770 771 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 772 if (mPausingActivity != null) { 773 Slog.e(TAG, "Trying to pause when pause is already pending for " 774 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 775 } 776 ActivityRecord prev = mResumedActivity; 777 if (prev == null) { 778 Slog.e(TAG, "Trying to pause when nothing is resumed", 779 new RuntimeException("here").fillInStackTrace()); 780 mStackSupervisor.resumeTopActivitiesLocked(); 781 return; 782 } 783 784 if (mActivityContainer.mParentActivity == null) { 785 // Top level stack, not a child. Look for child stacks. 786 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 787 } 788 789 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 790 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 791 mResumedActivity = null; 792 mPausingActivity = prev; 793 mLastPausedActivity = prev; 794 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 795 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 796 prev.state = ActivityState.PAUSING; 797 prev.task.touchActiveTime(); 798 clearLaunchTime(prev); 799 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 800 if (next == null || next.noDisplay || next.task != prev.task) { 801 prev.updateThumbnail(screenshotActivities(prev), null); 802 } 803 stopFullyDrawnTraceIfNeeded(); 804 805 mService.updateCpuStats(); 806 807 if (prev.app != null && prev.app.thread != null) { 808 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 809 try { 810 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 811 prev.userId, System.identityHashCode(prev), 812 prev.shortComponentName); 813 mService.updateUsageStats(prev, false); 814 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 815 userLeaving, prev.configChangeFlags); 816 } catch (Exception e) { 817 // Ignore exception, if process died other code will cleanup. 818 Slog.w(TAG, "Exception thrown during pause", e); 819 mPausingActivity = null; 820 mLastPausedActivity = null; 821 mLastNoHistoryActivity = null; 822 } 823 } else { 824 mPausingActivity = null; 825 mLastPausedActivity = null; 826 mLastNoHistoryActivity = null; 827 } 828 829 // If we are not going to sleep, we want to ensure the device is 830 // awake until the next activity is started. 831 if (!mService.isSleepingOrShuttingDown()) { 832 mStackSupervisor.acquireLaunchWakelock(); 833 } 834 835 if (mPausingActivity != null) { 836 // Have the window manager pause its key dispatching until the new 837 // activity has started. If we're pausing the activity just because 838 // the screen is being turned off and the UI is sleeping, don't interrupt 839 // key dispatch; the same activity will pick it up again on wakeup. 840 if (!uiSleeping) { 841 prev.pauseKeyDispatchingLocked(); 842 } else { 843 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 844 } 845 846 // Schedule a pause timeout in case the app doesn't respond. 847 // We don't give it much time because this directly impacts the 848 // responsiveness seen by the user. 849 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 850 msg.obj = prev; 851 prev.pauseTime = SystemClock.uptimeMillis(); 852 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 853 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 854 } else { 855 // This activity failed to schedule the 856 // pause, so just treat it as being paused now. 857 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 858 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 859 } 860 } 861 862 final void activityPausedLocked(IBinder token, boolean timeout, 863 PersistableBundle persistentState) { 864 if (DEBUG_PAUSE) Slog.v( 865 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 866 867 final ActivityRecord r = isInStackLocked(token); 868 if (r != null) { 869 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 870 if (persistentState != null) { 871 r.persistentState = persistentState; 872 mService.notifyTaskPersisterLocked(r.task, false); 873 } 874 if (mPausingActivity == r) { 875 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 876 + (timeout ? " (due to timeout)" : " (pause complete)")); 877 r.state = ActivityState.PAUSED; 878 completePauseLocked(); 879 } else { 880 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 881 r.userId, System.identityHashCode(r), r.shortComponentName, 882 mPausingActivity != null 883 ? mPausingActivity.shortComponentName : "(none)"); 884 } 885 } 886 } 887 888 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 889 PersistableBundle persistentState, CharSequence description) { 890 if (r.state != ActivityState.STOPPING) { 891 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 892 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 893 return; 894 } 895 if (persistentState != null) { 896 r.persistentState = persistentState; 897 mService.notifyTaskPersisterLocked(r.task, false); 898 } 899 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 900 if (icicle != null) { 901 // If icicle is null, this is happening due to a timeout, so we 902 // haven't really saved the state. 903 r.icicle = icicle; 904 r.haveState = true; 905 r.launchCount = 0; 906 r.updateThumbnail(null, description); 907 } 908 if (!r.stopped) { 909 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 910 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 911 r.stopped = true; 912 r.state = ActivityState.STOPPED; 913 if (r.finishing) { 914 r.clearOptionsLocked(); 915 } else { 916 if (r.configDestroy) { 917 destroyActivityLocked(r, true, false, "stop-config"); 918 mStackSupervisor.resumeTopActivitiesLocked(); 919 } else { 920 mStackSupervisor.updatePreviousProcessLocked(r); 921 } 922 } 923 } 924 } 925 926 private void completePauseLocked() { 927 ActivityRecord prev = mPausingActivity; 928 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 929 930 if (prev != null) { 931 if (prev.finishing) { 932 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 933 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 934 } else if (prev.app != null) { 935 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 936 if (prev.waitingVisible) { 937 prev.waitingVisible = false; 938 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 939 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 940 TAG, "Complete pause, no longer waiting: " + prev); 941 } 942 if (prev.configDestroy) { 943 // The previous is being paused because the configuration 944 // is changing, which means it is actually stopping... 945 // To juggle the fact that we are also starting a new 946 // instance right now, we need to first completely stop 947 // the current instance before starting the new one. 948 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 949 destroyActivityLocked(prev, true, false, "pause-config"); 950 } else { 951 mStackSupervisor.mStoppingActivities.add(prev); 952 if (mStackSupervisor.mStoppingActivities.size() > 3 || 953 prev.frontOfTask && mTaskHistory.size() <= 1) { 954 // If we already have a few activities waiting to stop, 955 // then give up on things going idle and start clearing 956 // them out. Or if r is the last of activity of the last task the stack 957 // will be empty and must be cleared immediately. 958 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 959 mStackSupervisor.scheduleIdleLocked(); 960 } else { 961 mStackSupervisor.checkReadyForSleepLocked(); 962 } 963 } 964 } else { 965 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 966 prev = null; 967 } 968 mPausingActivity = null; 969 } 970 971 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 972 if (!mService.isSleepingOrShuttingDown()) { 973 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 974 } else { 975 mStackSupervisor.checkReadyForSleepLocked(); 976 ActivityRecord top = topStack.topRunningActivityLocked(null); 977 if (top == null || (prev != null && top != prev)) { 978 // If there are no more activities available to run, 979 // do resume anyway to start something. Also if the top 980 // activity on the stack is not the just paused activity, 981 // we need to go ahead and resume it to ensure we complete 982 // an in-flight app switch. 983 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 984 } 985 } 986 987 if (prev != null) { 988 prev.resumeKeyDispatchingLocked(); 989 990 if (prev.app != null && prev.cpuTimeAtResume > 0 991 && mService.mBatteryStatsService.isOnBattery()) { 992 long diff; 993 synchronized (mService.mProcessCpuThread) { 994 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 995 - prev.cpuTimeAtResume; 996 } 997 if (diff > 0) { 998 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 999 synchronized (bsi) { 1000 BatteryStatsImpl.Uid.Proc ps = 1001 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1002 prev.info.packageName); 1003 if (ps != null) { 1004 ps.addForegroundTimeLocked(diff); 1005 } 1006 } 1007 } 1008 } 1009 prev.cpuTimeAtResume = 0; // reset it 1010 } 1011 } 1012 1013 /** 1014 * Once we know that we have asked an application to put an activity in 1015 * the resumed state (either by launching it or explicitly telling it), 1016 * this function updates the rest of our state to match that fact. 1017 */ 1018 private void completeResumeLocked(ActivityRecord next) { 1019 next.idle = false; 1020 next.results = null; 1021 next.newIntents = null; 1022 if (next.nowVisible) { 1023 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1024 mStackSupervisor.dismissKeyguard(); 1025 } 1026 1027 // schedule an idle timeout in case the app doesn't do it for us. 1028 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1029 1030 mStackSupervisor.reportResumedActivityLocked(next); 1031 1032 next.resumeKeyDispatchingLocked(); 1033 mNoAnimActivities.clear(); 1034 1035 // Mark the point when the activity is resuming 1036 // TODO: To be more accurate, the mark should be before the onCreate, 1037 // not after the onResume. But for subsequent starts, onResume is fine. 1038 if (next.app != null) { 1039 synchronized (mService.mProcessCpuThread) { 1040 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1041 } 1042 } else { 1043 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1044 } 1045 } 1046 1047 private void setVisibile(ActivityRecord r, boolean visible) { 1048 r.visible = visible; 1049 mWindowManager.setAppVisibility(r.appToken, visible); 1050 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1051 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1052 ActivityContainer container = containers.get(containerNdx); 1053 container.setVisible(visible); 1054 } 1055 } 1056 1057 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1058 // If so, this stack is hidden, otherwise it is visible. 1059 private boolean isStackVisible() { 1060 if (!isAttached()) { 1061 return false; 1062 } 1063 1064 if (mStackSupervisor.isFrontStack(this)) { 1065 return true; 1066 } 1067 1068 /** 1069 * Start at the task above this one and go up, looking for a visible 1070 * fullscreen activity, or a translucent activity that requested the 1071 * wallpaper to be shown behind it. 1072 */ 1073 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1074 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1075 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1076 final TaskRecord task = tasks.get(taskNdx); 1077 final ArrayList<ActivityRecord> activities = task.mActivities; 1078 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1079 final ActivityRecord r = activities.get(activityNdx); 1080 1081 // Conditions for an activity to obscure the stack we're 1082 // examining: 1083 // 1. Not Finishing AND Visible AND: 1084 // 2. Either: 1085 // - Full Screen Activity OR 1086 // - On top of Home and our stack is NOT home 1087 if (!r.finishing && r.visible && (r.fullscreen || 1088 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1089 return false; 1090 } 1091 } 1092 } 1093 } 1094 1095 return true; 1096 } 1097 1098 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1099 ActivityRecord r = topRunningActivityLocked(null); 1100 if (r != null) { 1101 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1102 } 1103 } 1104 1105 /** 1106 * Make sure that all activities that need to be visible (that is, they 1107 * currently can be seen by the user) actually are. 1108 */ 1109 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1110 String onlyThisProcess, int configChanges) { 1111 if (DEBUG_VISBILITY) Slog.v( 1112 TAG, "ensureActivitiesVisible behind " + top 1113 + " configChanges=0x" + Integer.toHexString(configChanges)); 1114 1115 if (mTranslucentActivityWaiting != top) { 1116 mUndrawnActivitiesBelowTopTranslucent.clear(); 1117 if (mTranslucentActivityWaiting != null) { 1118 // Call the callback with a timeout indication. 1119 notifyActivityDrawnLocked(null); 1120 mTranslucentActivityWaiting = null; 1121 } 1122 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1123 } 1124 1125 // If the top activity is not fullscreen, then we need to 1126 // make sure any activities under it are now visible. 1127 boolean aboveTop = true; 1128 boolean behindFullscreen = !isStackVisible(); 1129 1130 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1131 final TaskRecord task = mTaskHistory.get(taskNdx); 1132 final ArrayList<ActivityRecord> activities = task.mActivities; 1133 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1134 final ActivityRecord r = activities.get(activityNdx); 1135 if (r.finishing) { 1136 continue; 1137 } 1138 if (aboveTop && r != top) { 1139 continue; 1140 } 1141 aboveTop = false; 1142 if (!behindFullscreen) { 1143 if (DEBUG_VISBILITY) Slog.v( 1144 TAG, "Make visible? " + r + " finishing=" + r.finishing 1145 + " state=" + r.state); 1146 1147 final boolean doThisProcess = onlyThisProcess == null 1148 || onlyThisProcess.equals(r.processName); 1149 1150 // First: if this is not the current activity being started, make 1151 // sure it matches the current configuration. 1152 if (r != starting && doThisProcess) { 1153 ensureActivityConfigurationLocked(r, 0); 1154 } 1155 1156 if (r.app == null || r.app.thread == null) { 1157 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1158 // This activity needs to be visible, but isn't even 1159 // running... get it started, but don't resume it 1160 // at this point. 1161 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1162 if (r != starting) { 1163 r.startFreezingScreenLocked(r.app, configChanges); 1164 } 1165 if (!r.visible) { 1166 if (DEBUG_VISBILITY) Slog.v( 1167 TAG, "Starting and making visible: " + r); 1168 setVisibile(r, true); 1169 } 1170 if (r != starting) { 1171 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1172 } 1173 } 1174 1175 } else if (r.visible) { 1176 // If this activity is already visible, then there is nothing 1177 // else to do here. 1178 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1179 r.stopFreezingScreenLocked(false); 1180 1181 } else if (onlyThisProcess == null) { 1182 // This activity is not currently visible, but is running. 1183 // Tell it to become visible. 1184 r.visible = true; 1185 if (r.state != ActivityState.RESUMED && r != starting) { 1186 // If this activity is paused, tell it 1187 // to now show its window. 1188 if (DEBUG_VISBILITY) Slog.v( 1189 TAG, "Making visible and scheduling visibility: " + r); 1190 try { 1191 if (mTranslucentActivityWaiting != null) { 1192 r.updateOptionsLocked(mReturningActivityOptions); 1193 mUndrawnActivitiesBelowTopTranslucent.add(r); 1194 } 1195 setVisibile(r, true); 1196 r.sleeping = false; 1197 r.app.pendingUiClean = true; 1198 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1199 r.stopFreezingScreenLocked(false); 1200 } catch (Exception e) { 1201 // Just skip on any failure; we'll make it 1202 // visible when it next restarts. 1203 Slog.w(TAG, "Exception thrown making visibile: " 1204 + r.intent.getComponent(), e); 1205 } 1206 } 1207 } 1208 1209 // Aggregate current change flags. 1210 configChanges |= r.configChangeFlags; 1211 1212 if (r.fullscreen) { 1213 // At this point, nothing else needs to be shown 1214 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1215 behindFullscreen = true; 1216 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1217 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1218 behindFullscreen = true; 1219 } 1220 } else { 1221 if (DEBUG_VISBILITY) Slog.v( 1222 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1223 + " state=" + r.state 1224 + " behindFullscreen=" + behindFullscreen); 1225 // Now for any activities that aren't visible to the user, make 1226 // sure they no longer are keeping the screen frozen. 1227 if (r.visible) { 1228 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1229 try { 1230 setVisibile(r, false); 1231 switch (r.state) { 1232 case STOPPING: 1233 case STOPPED: 1234 if (r.app != null && r.app.thread != null) { 1235 if (DEBUG_VISBILITY) Slog.v( 1236 TAG, "Scheduling invisibility: " + r); 1237 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1238 } 1239 break; 1240 1241 case INITIALIZING: 1242 case RESUMED: 1243 case PAUSING: 1244 case PAUSED: 1245 // This case created for transitioning activities from 1246 // translucent to opaque {@link Activity#convertToOpaque}. 1247 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1248 mStackSupervisor.mStoppingActivities.add(r); 1249 } 1250 mStackSupervisor.scheduleIdleLocked(); 1251 break; 1252 1253 default: 1254 break; 1255 } 1256 } catch (Exception e) { 1257 // Just skip on any failure; we'll make it 1258 // visible when it next restarts. 1259 Slog.w(TAG, "Exception thrown making hidden: " 1260 + r.intent.getComponent(), e); 1261 } 1262 } else { 1263 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1264 } 1265 } 1266 } 1267 } 1268 } 1269 1270 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1271 mTranslucentActivityWaiting = r; 1272 mUndrawnActivitiesBelowTopTranslucent.clear(); 1273 mReturningActivityOptions = options; 1274 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1275 } 1276 1277 /** 1278 * Called as activities below the top translucent activity are redrawn. When the last one is 1279 * redrawn notify the top activity by calling 1280 * {@link Activity#onTranslucentConversionComplete}. 1281 * 1282 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1283 * occurred and the activity will be notified immediately. 1284 */ 1285 void notifyActivityDrawnLocked(ActivityRecord r) { 1286 mActivityContainer.setDrawn(); 1287 if ((r == null) 1288 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1289 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1290 // The last undrawn activity below the top has just been drawn. If there is an 1291 // opaque activity at the top, notify it that it can become translucent safely now. 1292 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1293 mTranslucentActivityWaiting = null; 1294 mUndrawnActivitiesBelowTopTranslucent.clear(); 1295 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1296 1297 if (waitingActivity != null) { 1298 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1299 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1300 try { 1301 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1302 waitingActivity.appToken, r != null); 1303 } catch (RemoteException e) { 1304 } 1305 } 1306 } 1307 } 1308 } 1309 1310 /** If any activities below the top running one are in the INITIALIZING state and they have a 1311 * starting window displayed then remove that starting window. It is possible that the activity 1312 * in this state will never resumed in which case that starting window will be orphaned. */ 1313 void cancelInitializingActivities() { 1314 final ActivityRecord topActivity = topRunningActivityLocked(null); 1315 boolean aboveTop = true; 1316 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1317 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1318 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1319 final ActivityRecord r = activities.get(activityNdx); 1320 if (aboveTop) { 1321 if (r == topActivity) { 1322 aboveTop = false; 1323 } 1324 continue; 1325 } 1326 1327 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1328 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1329 r.mStartingWindowShown = false; 1330 mWindowManager.removeAppStartingWindow(r.appToken); 1331 } 1332 } 1333 } 1334 } 1335 1336 /** 1337 * Ensure that the top activity in the stack is resumed. 1338 * 1339 * @param prev The previously resumed activity, for when in the process 1340 * of pausing; can be null to call from elsewhere. 1341 * 1342 * @return Returns true if something is being resumed, or false if 1343 * nothing happened. 1344 */ 1345 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1346 return resumeTopActivityLocked(prev, null); 1347 } 1348 1349 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1350 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1351 1352 ActivityRecord parent = mActivityContainer.mParentActivity; 1353 if ((parent != null && parent.state != ActivityState.RESUMED) || 1354 !mActivityContainer.isAttached()) { 1355 // Do not resume this stack if its parent is not resumed. 1356 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1357 return false; 1358 } 1359 1360 cancelInitializingActivities(); 1361 1362 // Find the first activity that is not finishing. 1363 ActivityRecord next = topRunningActivityLocked(null); 1364 1365 // Remember how we'll process this pause/resume situation, and ensure 1366 // that the state is reset however we wind up proceeding. 1367 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1368 mStackSupervisor.mUserLeaving = false; 1369 1370 final TaskRecord prevTask = prev != null ? prev.task : null; 1371 if (next == null) { 1372 // There are no more activities! Let's just start up the 1373 // Launcher... 1374 ActivityOptions.abort(options); 1375 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1376 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1377 // Only resume home if on home display 1378 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1379 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1380 return isOnHomeDisplay() && 1381 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1382 } 1383 1384 next.delayedResume = false; 1385 1386 // If the top activity is the resumed one, nothing to do. 1387 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1388 mStackSupervisor.allResumedActivitiesComplete()) { 1389 // Make sure we have executed any pending transitions, since there 1390 // should be nothing left to do at this point. 1391 mWindowManager.executeAppTransition(); 1392 mNoAnimActivities.clear(); 1393 ActivityOptions.abort(options); 1394 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1395 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1396 return false; 1397 } 1398 1399 final TaskRecord nextTask = next.task; 1400 if (prevTask != null && prevTask.stack == this && 1401 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1402 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1403 if (prevTask == nextTask) { 1404 prevTask.setFrontOfTask(); 1405 } else if (prevTask != topTask()) { 1406 // This task is going away but it was supposed to return to the home stack. 1407 // Now the task above it has to return to the home task instead. 1408 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1409 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1410 } else { 1411 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1412 "resumeTopActivityLocked: Launching home next"); 1413 // Only resume home if on home display 1414 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1415 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1416 return isOnHomeDisplay() && 1417 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1418 } 1419 } 1420 1421 // If we are sleeping, and there is no resumed activity, and the top 1422 // activity is paused, well that is the state we want. 1423 if (mService.isSleepingOrShuttingDown() 1424 && mLastPausedActivity == next 1425 && mStackSupervisor.allPausedActivitiesComplete()) { 1426 // Make sure we have executed any pending transitions, since there 1427 // should be nothing left to do at this point. 1428 mWindowManager.executeAppTransition(); 1429 mNoAnimActivities.clear(); 1430 ActivityOptions.abort(options); 1431 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1432 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1433 return false; 1434 } 1435 1436 // Make sure that the user who owns this activity is started. If not, 1437 // we will just leave it as is because someone should be bringing 1438 // another user's activities to the top of the stack. 1439 if (mService.mStartedUsers.get(next.userId) == null) { 1440 Slog.w(TAG, "Skipping resume of top activity " + next 1441 + ": user " + next.userId + " is stopped"); 1442 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1443 return false; 1444 } 1445 1446 // The activity may be waiting for stop, but that is no longer 1447 // appropriate for it. 1448 mStackSupervisor.mStoppingActivities.remove(next); 1449 mStackSupervisor.mGoingToSleepActivities.remove(next); 1450 next.sleeping = false; 1451 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1452 1453 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1454 1455 // If we are currently pausing an activity, then don't do anything 1456 // until that is done. 1457 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1458 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1459 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1460 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1461 return false; 1462 } 1463 1464 // Okay we are now going to start a switch, to 'next'. We may first 1465 // have to pause the current activity, but this is an important point 1466 // where we have decided to go to 'next' so keep track of that. 1467 // XXX "App Redirected" dialog is getting too many false positives 1468 // at this point, so turn off for now. 1469 if (false) { 1470 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1471 long now = SystemClock.uptimeMillis(); 1472 final boolean inTime = mLastStartedActivity.startTime != 0 1473 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1474 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1475 final int nextUid = next.info.applicationInfo.uid; 1476 if (inTime && lastUid != nextUid 1477 && lastUid != next.launchedFromUid 1478 && mService.checkPermission( 1479 android.Manifest.permission.STOP_APP_SWITCHES, 1480 -1, next.launchedFromUid) 1481 != PackageManager.PERMISSION_GRANTED) { 1482 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1483 } else { 1484 next.startTime = now; 1485 mLastStartedActivity = next; 1486 } 1487 } else { 1488 next.startTime = SystemClock.uptimeMillis(); 1489 mLastStartedActivity = next; 1490 } 1491 } 1492 1493 // We need to start pausing the current activity so the top one 1494 // can be resumed... 1495 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1496 if (mResumedActivity != null) { 1497 pausing = true; 1498 startPausingLocked(userLeaving, false); 1499 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1500 } 1501 if (pausing) { 1502 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1503 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1504 // At this point we want to put the upcoming activity's process 1505 // at the top of the LRU list, since we know we will be needing it 1506 // very soon and it would be a waste to let it get killed if it 1507 // happens to be sitting towards the end. 1508 if (next.app != null && next.app.thread != null) { 1509 // No reason to do full oom adj update here; we'll let that 1510 // happen whenever it needs to later. 1511 mService.updateLruProcessLocked(next.app, true, null); 1512 } 1513 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1514 return true; 1515 } 1516 1517 // If the most recent activity was noHistory but was only stopped rather 1518 // than stopped+finished because the device went to sleep, we need to make 1519 // sure to finish it as we're making a new activity topmost. 1520 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1521 !mLastNoHistoryActivity.finishing) { 1522 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1523 " on new resume"); 1524 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1525 null, "no-history", false); 1526 mLastNoHistoryActivity = null; 1527 } 1528 1529 if (prev != null && prev != next) { 1530 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1531 prev.waitingVisible = true; 1532 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1533 if (DEBUG_SWITCH) Slog.v( 1534 TAG, "Resuming top, waiting visible to hide: " + prev); 1535 } else { 1536 // The next activity is already visible, so hide the previous 1537 // activity's windows right now so we can show the new one ASAP. 1538 // We only do this if the previous is finishing, which should mean 1539 // it is on top of the one being resumed so hiding it quickly 1540 // is good. Otherwise, we want to do the normal route of allowing 1541 // the resumed activity to be shown so we can decide if the 1542 // previous should actually be hidden depending on whether the 1543 // new one is found to be full-screen or not. 1544 if (prev.finishing) { 1545 mWindowManager.setAppVisibility(prev.appToken, false); 1546 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1547 + prev + ", waitingVisible=" 1548 + (prev != null ? prev.waitingVisible : null) 1549 + ", nowVisible=" + next.nowVisible); 1550 } else { 1551 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1552 + prev + ", waitingVisible=" 1553 + (prev != null ? prev.waitingVisible : null) 1554 + ", nowVisible=" + next.nowVisible); 1555 } 1556 } 1557 } 1558 1559 // Launching this app's activity, make sure the app is no longer 1560 // considered stopped. 1561 try { 1562 AppGlobals.getPackageManager().setPackageStoppedState( 1563 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1564 } catch (RemoteException e1) { 1565 } catch (IllegalArgumentException e) { 1566 Slog.w(TAG, "Failed trying to unstop package " 1567 + next.packageName + ": " + e); 1568 } 1569 1570 // We are starting up the next activity, so tell the window manager 1571 // that the previous one will be hidden soon. This way it can know 1572 // to ignore it when computing the desired screen orientation. 1573 boolean anim = true; 1574 if (prev != null) { 1575 if (prev.finishing) { 1576 if (DEBUG_TRANSITION) Slog.v(TAG, 1577 "Prepare close transition: prev=" + prev); 1578 if (mNoAnimActivities.contains(prev)) { 1579 anim = false; 1580 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1581 } else { 1582 mWindowManager.prepareAppTransition(prev.task == next.task 1583 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1584 : AppTransition.TRANSIT_TASK_CLOSE, false); 1585 } 1586 mWindowManager.setAppWillBeHidden(prev.appToken); 1587 mWindowManager.setAppVisibility(prev.appToken, false); 1588 } else { 1589 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1590 if (mNoAnimActivities.contains(next)) { 1591 anim = false; 1592 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1593 } else { 1594 mWindowManager.prepareAppTransition(prev.task == next.task 1595 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1596 : AppTransition.TRANSIT_TASK_OPEN, false); 1597 } 1598 } 1599 if (false) { 1600 mWindowManager.setAppWillBeHidden(prev.appToken); 1601 mWindowManager.setAppVisibility(prev.appToken, false); 1602 } 1603 } else { 1604 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1605 if (mNoAnimActivities.contains(next)) { 1606 anim = false; 1607 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1608 } else { 1609 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1610 } 1611 } 1612 1613 Bundle resumeAnimOptions = null; 1614 if (anim) { 1615 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1616 if (opts != null) { 1617 resumeAnimOptions = opts.toBundle(); 1618 } 1619 next.applyOptionsLocked(); 1620 } else { 1621 next.clearOptionsLocked(); 1622 } 1623 1624 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1625 if (next.app != null && next.app.thread != null) { 1626 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1627 1628 // This activity is now becoming visible. 1629 mWindowManager.setAppVisibility(next.appToken, true); 1630 1631 // schedule launch ticks to collect information about slow apps. 1632 next.startLaunchTickingLocked(); 1633 1634 ActivityRecord lastResumedActivity = 1635 lastStack == null ? null :lastStack.mResumedActivity; 1636 ActivityState lastState = next.state; 1637 1638 mService.updateCpuStats(); 1639 1640 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1641 next.state = ActivityState.RESUMED; 1642 mResumedActivity = next; 1643 next.task.touchActiveTime(); 1644 mService.addRecentTaskLocked(next.task); 1645 mService.updateLruProcessLocked(next.app, true, null); 1646 updateLRUListLocked(next); 1647 mService.updateOomAdjLocked(); 1648 1649 // Have the window manager re-evaluate the orientation of 1650 // the screen based on the new activity order. 1651 boolean notUpdated = true; 1652 if (mStackSupervisor.isFrontStack(this)) { 1653 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1654 mService.mConfiguration, 1655 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1656 if (config != null) { 1657 next.frozenBeforeDestroy = true; 1658 } 1659 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1660 } 1661 1662 if (notUpdated) { 1663 // The configuration update wasn't able to keep the existing 1664 // instance of the activity, and instead started a new one. 1665 // We should be all done, but let's just make sure our activity 1666 // is still at the top and schedule another run if something 1667 // weird happened. 1668 ActivityRecord nextNext = topRunningActivityLocked(null); 1669 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1670 "Activity config changed during resume: " + next 1671 + ", new next: " + nextNext); 1672 if (nextNext != next) { 1673 // Do over! 1674 mStackSupervisor.scheduleResumeTopActivities(); 1675 } 1676 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1677 mNoAnimActivities.clear(); 1678 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1679 return true; 1680 } 1681 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1682 return false; 1683 } 1684 1685 try { 1686 // Deliver all pending results. 1687 ArrayList<ResultInfo> a = next.results; 1688 if (a != null) { 1689 final int N = a.size(); 1690 if (!next.finishing && N > 0) { 1691 if (DEBUG_RESULTS) Slog.v( 1692 TAG, "Delivering results to " + next 1693 + ": " + a); 1694 next.app.thread.scheduleSendResult(next.appToken, a); 1695 } 1696 } 1697 1698 if (next.newIntents != null) { 1699 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1700 } 1701 1702 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1703 next.userId, System.identityHashCode(next), 1704 next.task.taskId, next.shortComponentName); 1705 1706 next.sleeping = false; 1707 mService.showAskCompatModeDialogLocked(next); 1708 next.app.pendingUiClean = true; 1709 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1710 next.clearOptionsLocked(); 1711 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1712 mService.isNextTransitionForward(), resumeAnimOptions); 1713 1714 mStackSupervisor.checkReadyForSleepLocked(); 1715 1716 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1717 } catch (Exception e) { 1718 // Whoops, need to restart this activity! 1719 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1720 + lastState + ": " + next); 1721 next.state = lastState; 1722 if (lastStack != null) { 1723 lastStack.mResumedActivity = lastResumedActivity; 1724 } 1725 Slog.i(TAG, "Restarting because process died: " + next); 1726 if (!next.hasBeenLaunched) { 1727 next.hasBeenLaunched = true; 1728 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1729 mStackSupervisor.isFrontStack(lastStack)) { 1730 mWindowManager.setAppStartingWindow( 1731 next.appToken, next.packageName, next.theme, 1732 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1733 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1734 next.windowFlags, null, true); 1735 } 1736 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1737 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1738 return true; 1739 } 1740 1741 // From this point on, if something goes wrong there is no way 1742 // to recover the activity. 1743 try { 1744 next.visible = true; 1745 completeResumeLocked(next); 1746 } catch (Exception e) { 1747 // If any exception gets thrown, toss away this 1748 // activity and try the next one. 1749 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1750 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1751 "resume-exception", true); 1752 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1753 return true; 1754 } 1755 next.stopped = false; 1756 1757 } else { 1758 // Whoops, need to restart this activity! 1759 if (!next.hasBeenLaunched) { 1760 next.hasBeenLaunched = true; 1761 } else { 1762 if (SHOW_APP_STARTING_PREVIEW) { 1763 mWindowManager.setAppStartingWindow( 1764 next.appToken, next.packageName, next.theme, 1765 mService.compatibilityInfoForPackageLocked( 1766 next.info.applicationInfo), 1767 next.nonLocalizedLabel, 1768 next.labelRes, next.icon, next.logo, next.windowFlags, 1769 null, true); 1770 } 1771 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1772 } 1773 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1774 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1775 } 1776 1777 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1778 return true; 1779 } 1780 1781 private void insertTaskAtTop(TaskRecord task) { 1782 // If this is being moved to the top by another activity or being launched from the home 1783 // activity, set mOnTopOfHome accordingly. 1784 if (isOnHomeDisplay()) { 1785 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1786 final boolean fromHome = lastStack.isHomeStack(); 1787 if (!isHomeStack() && (fromHome || topTask() != task)) { 1788 task.setTaskToReturnTo(fromHome ? 1789 lastStack.topTask().taskType : APPLICATION_ACTIVITY_TYPE); 1790 } 1791 } else { 1792 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1793 } 1794 1795 mTaskHistory.remove(task); 1796 // Now put task at top. 1797 int stackNdx = mTaskHistory.size(); 1798 if (!isCurrentProfileLocked(task.userId)) { 1799 // Put non-current user tasks below current user tasks. 1800 while (--stackNdx >= 0) { 1801 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1802 break; 1803 } 1804 } 1805 ++stackNdx; 1806 } 1807 mTaskHistory.add(stackNdx, task); 1808 updateTaskMovement(task, true); 1809 } 1810 1811 final void startActivityLocked(ActivityRecord r, boolean newTask, 1812 boolean doResume, boolean keepCurTransition, Bundle options) { 1813 TaskRecord rTask = r.task; 1814 final int taskId = rTask.taskId; 1815 if (taskForIdLocked(taskId) == null || newTask) { 1816 // Last activity in task had been removed or ActivityManagerService is reusing task. 1817 // Insert or replace. 1818 // Might not even be in. 1819 insertTaskAtTop(rTask); 1820 mWindowManager.moveTaskToTop(taskId); 1821 } 1822 TaskRecord task = null; 1823 if (!newTask) { 1824 // If starting in an existing task, find where that is... 1825 boolean startIt = true; 1826 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1827 task = mTaskHistory.get(taskNdx); 1828 if (task == r.task) { 1829 // Here it is! Now, if this is not yet visible to the 1830 // user, then just add it without starting; it will 1831 // get started when the user navigates back to it. 1832 if (!startIt) { 1833 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1834 + task, new RuntimeException("here").fillInStackTrace()); 1835 task.addActivityToTop(r); 1836 r.putInHistory(); 1837 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1838 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1839 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1840 r.userId, r.info.configChanges); 1841 if (VALIDATE_TOKENS) { 1842 validateAppTokensLocked(); 1843 } 1844 ActivityOptions.abort(options); 1845 return; 1846 } 1847 break; 1848 } else if (task.numFullscreen > 0) { 1849 startIt = false; 1850 } 1851 } 1852 } 1853 1854 // Place a new activity at top of stack, so it is next to interact 1855 // with the user. 1856 1857 // If we are not placing the new activity frontmost, we do not want 1858 // to deliver the onUserLeaving callback to the actual frontmost 1859 // activity 1860 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1861 mStackSupervisor.mUserLeaving = false; 1862 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1863 "startActivity() behind front, mUserLeaving=false"); 1864 } 1865 1866 task = r.task; 1867 1868 // Slot the activity into the history stack and proceed 1869 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1870 new RuntimeException("here").fillInStackTrace()); 1871 task.addActivityToTop(r); 1872 task.setFrontOfTask(); 1873 1874 r.putInHistory(); 1875 if (!isHomeStack() || numActivities() > 0) { 1876 // We want to show the starting preview window if we are 1877 // switching to a new task, or the next activity's process is 1878 // not currently running. 1879 boolean showStartingIcon = newTask; 1880 ProcessRecord proc = r.app; 1881 if (proc == null) { 1882 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1883 } 1884 if (proc == null || proc.thread == null) { 1885 showStartingIcon = true; 1886 } 1887 if (DEBUG_TRANSITION) Slog.v(TAG, 1888 "Prepare open transition: starting " + r); 1889 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1890 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1891 mNoAnimActivities.add(r); 1892 } else { 1893 mWindowManager.prepareAppTransition(newTask 1894 ? AppTransition.TRANSIT_TASK_OPEN 1895 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1896 mNoAnimActivities.remove(r); 1897 } 1898 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1899 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1900 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1901 r.info.configChanges); 1902 boolean doShow = true; 1903 if (newTask) { 1904 // Even though this activity is starting fresh, we still need 1905 // to reset it to make sure we apply affinities to move any 1906 // existing activities from other tasks in to it. 1907 // If the caller has requested that the target task be 1908 // reset, then do so. 1909 if ((r.intent.getFlags() 1910 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1911 resetTaskIfNeededLocked(r, r); 1912 doShow = topRunningNonDelayedActivityLocked(null) == r; 1913 } 1914 } 1915 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1916 // Figure out if we are transitioning from another activity that is 1917 // "has the same starting icon" as the next one. This allows the 1918 // window manager to keep the previous window it had previously 1919 // created, if it still had one. 1920 ActivityRecord prev = mResumedActivity; 1921 if (prev != null) { 1922 // We don't want to reuse the previous starting preview if: 1923 // (1) The current activity is in a different task. 1924 if (prev.task != r.task) { 1925 prev = null; 1926 } 1927 // (2) The current activity is already displayed. 1928 else if (prev.nowVisible) { 1929 prev = null; 1930 } 1931 } 1932 mWindowManager.setAppStartingWindow( 1933 r.appToken, r.packageName, r.theme, 1934 mService.compatibilityInfoForPackageLocked( 1935 r.info.applicationInfo), r.nonLocalizedLabel, 1936 r.labelRes, r.icon, r.logo, r.windowFlags, 1937 prev != null ? prev.appToken : null, showStartingIcon); 1938 r.mStartingWindowShown = true; 1939 } 1940 } else { 1941 // If this is the first activity, don't do any fancy animations, 1942 // because there is nothing for it to animate on top of. 1943 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1944 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1945 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1946 r.info.configChanges); 1947 ActivityOptions.abort(options); 1948 options = null; 1949 } 1950 if (VALIDATE_TOKENS) { 1951 validateAppTokensLocked(); 1952 } 1953 1954 if (doResume) { 1955 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 1956 } 1957 } 1958 1959 final void validateAppTokensLocked() { 1960 mValidateAppTokens.clear(); 1961 mValidateAppTokens.ensureCapacity(numActivities()); 1962 final int numTasks = mTaskHistory.size(); 1963 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1964 TaskRecord task = mTaskHistory.get(taskNdx); 1965 final ArrayList<ActivityRecord> activities = task.mActivities; 1966 if (activities.isEmpty()) { 1967 continue; 1968 } 1969 TaskGroup group = new TaskGroup(); 1970 group.taskId = task.taskId; 1971 mValidateAppTokens.add(group); 1972 final int numActivities = activities.size(); 1973 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1974 final ActivityRecord r = activities.get(activityNdx); 1975 group.tokens.add(r.appToken); 1976 } 1977 } 1978 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1979 } 1980 1981 /** 1982 * Perform a reset of the given task, if needed as part of launching it. 1983 * Returns the new HistoryRecord at the top of the task. 1984 */ 1985 /** 1986 * Helper method for #resetTaskIfNeededLocked. 1987 * We are inside of the task being reset... we'll either finish this activity, push it out 1988 * for another task, or leave it as-is. 1989 * @param task The task containing the Activity (taskTop) that might be reset. 1990 * @param forceReset 1991 * @return An ActivityOptions that needs to be processed. 1992 */ 1993 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1994 ActivityOptions topOptions = null; 1995 1996 int replyChainEnd = -1; 1997 boolean canMoveOptions = true; 1998 1999 // We only do this for activities that are not the root of the task (since if we finish 2000 // the root, we may no longer have the task!). 2001 final ArrayList<ActivityRecord> activities = task.mActivities; 2002 final int numActivities = activities.size(); 2003 for (int i = numActivities - 1; i > 0; --i ) { 2004 ActivityRecord target = activities.get(i); 2005 2006 final int flags = target.info.flags; 2007 final boolean finishOnTaskLaunch = 2008 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2009 final boolean allowTaskReparenting = 2010 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2011 final boolean clearWhenTaskReset = 2012 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2013 2014 if (!finishOnTaskLaunch 2015 && !clearWhenTaskReset 2016 && target.resultTo != null) { 2017 // If this activity is sending a reply to a previous 2018 // activity, we can't do anything with it now until 2019 // we reach the start of the reply chain. 2020 // XXX note that we are assuming the result is always 2021 // to the previous activity, which is almost always 2022 // the case but we really shouldn't count on. 2023 if (replyChainEnd < 0) { 2024 replyChainEnd = i; 2025 } 2026 } else if (!finishOnTaskLaunch 2027 && !clearWhenTaskReset 2028 && allowTaskReparenting 2029 && target.taskAffinity != null 2030 && !target.taskAffinity.equals(task.affinity)) { 2031 // If this activity has an affinity for another 2032 // task, then we need to move it out of here. We will 2033 // move it as far out of the way as possible, to the 2034 // bottom of the activity stack. This also keeps it 2035 // correctly ordered with any activities we previously 2036 // moved. 2037 final ThumbnailHolder newThumbHolder; 2038 final TaskRecord targetTask; 2039 final ActivityRecord bottom = 2040 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2041 mTaskHistory.get(0).mActivities.get(0) : null; 2042 if (bottom != null && target.taskAffinity != null 2043 && target.taskAffinity.equals(bottom.task.affinity)) { 2044 // If the activity currently at the bottom has the 2045 // same task affinity as the one we are moving, 2046 // then merge it into the same task. 2047 targetTask = bottom.task; 2048 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2049 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2050 + " out to bottom task " + bottom.task); 2051 } else { 2052 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2053 null, null, null, false); 2054 newThumbHolder = targetTask; 2055 targetTask.affinityIntent = target.intent; 2056 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2057 + " out to new task " + target.task); 2058 } 2059 2060 target.thumbHolder = newThumbHolder; 2061 2062 final int targetTaskId = targetTask.taskId; 2063 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2064 2065 boolean noOptions = canMoveOptions; 2066 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2067 for (int srcPos = start; srcPos >= i; --srcPos) { 2068 final ActivityRecord p = activities.get(srcPos); 2069 if (p.finishing) { 2070 continue; 2071 } 2072 2073 ThumbnailHolder curThumbHolder = p.thumbHolder; 2074 canMoveOptions = false; 2075 if (noOptions && topOptions == null) { 2076 topOptions = p.takeOptionsLocked(); 2077 if (topOptions != null) { 2078 noOptions = false; 2079 } 2080 } 2081 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2082 + task + " adding to task=" + targetTask 2083 + " Callers=" + Debug.getCallers(4)); 2084 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2085 + " out to target's task " + target.task); 2086 p.setTask(targetTask, curThumbHolder, false); 2087 targetTask.addActivityAtBottom(p); 2088 2089 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2090 } 2091 2092 mWindowManager.moveTaskToBottom(targetTaskId); 2093 if (VALIDATE_TOKENS) { 2094 validateAppTokensLocked(); 2095 } 2096 2097 replyChainEnd = -1; 2098 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2099 // If the activity should just be removed -- either 2100 // because it asks for it, or the task should be 2101 // cleared -- then finish it and anything that is 2102 // part of its reply chain. 2103 int end; 2104 if (clearWhenTaskReset) { 2105 // In this case, we want to finish this activity 2106 // and everything above it, so be sneaky and pretend 2107 // like these are all in the reply chain. 2108 end = numActivities - 1; 2109 } else if (replyChainEnd < 0) { 2110 end = i; 2111 } else { 2112 end = replyChainEnd; 2113 } 2114 boolean noOptions = canMoveOptions; 2115 for (int srcPos = i; srcPos <= end; srcPos++) { 2116 ActivityRecord p = activities.get(srcPos); 2117 if (p.finishing) { 2118 continue; 2119 } 2120 canMoveOptions = false; 2121 if (noOptions && topOptions == null) { 2122 topOptions = p.takeOptionsLocked(); 2123 if (topOptions != null) { 2124 noOptions = false; 2125 } 2126 } 2127 if (DEBUG_TASKS) Slog.w(TAG, 2128 "resetTaskIntendedTask: calling finishActivity on " + p); 2129 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2130 end--; 2131 srcPos--; 2132 } 2133 } 2134 replyChainEnd = -1; 2135 } else { 2136 // If we were in the middle of a chain, well the 2137 // activity that started it all doesn't want anything 2138 // special, so leave it all as-is. 2139 replyChainEnd = -1; 2140 } 2141 } 2142 2143 return topOptions; 2144 } 2145 2146 /** 2147 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2148 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2149 * @param affinityTask The task we are looking for an affinity to. 2150 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2151 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2152 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2153 */ 2154 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2155 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2156 int replyChainEnd = -1; 2157 final int taskId = task.taskId; 2158 final String taskAffinity = task.affinity; 2159 2160 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2161 final int numActivities = activities.size(); 2162 // Do not operate on the root Activity. 2163 for (int i = numActivities - 1; i > 0; --i) { 2164 ActivityRecord target = activities.get(i); 2165 2166 final int flags = target.info.flags; 2167 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2168 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2169 2170 if (target.resultTo != null) { 2171 // If this activity is sending a reply to a previous 2172 // activity, we can't do anything with it now until 2173 // we reach the start of the reply chain. 2174 // XXX note that we are assuming the result is always 2175 // to the previous activity, which is almost always 2176 // the case but we really shouldn't count on. 2177 if (replyChainEnd < 0) { 2178 replyChainEnd = i; 2179 } 2180 } else if (topTaskIsHigher 2181 && allowTaskReparenting 2182 && taskAffinity != null 2183 && taskAffinity.equals(target.taskAffinity)) { 2184 // This activity has an affinity for our task. Either remove it if we are 2185 // clearing or move it over to our task. Note that 2186 // we currently punt on the case where we are resetting a 2187 // task that is not at the top but who has activities above 2188 // with an affinity to it... this is really not a normal 2189 // case, and we will need to later pull that task to the front 2190 // and usually at that point we will do the reset and pick 2191 // up those remaining activities. (This only happens if 2192 // someone starts an activity in a new task from an activity 2193 // in a task that is not currently on top.) 2194 if (forceReset || finishOnTaskLaunch) { 2195 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2196 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2197 for (int srcPos = start; srcPos >= i; --srcPos) { 2198 final ActivityRecord p = activities.get(srcPos); 2199 if (p.finishing) { 2200 continue; 2201 } 2202 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2203 } 2204 } else { 2205 if (taskInsertionPoint < 0) { 2206 taskInsertionPoint = task.mActivities.size(); 2207 2208 } 2209 2210 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2211 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2212 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2213 for (int srcPos = start; srcPos >= i; --srcPos) { 2214 final ActivityRecord p = activities.get(srcPos); 2215 p.setTask(task, null, false); 2216 task.addActivityAtIndex(taskInsertionPoint, p); 2217 2218 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2219 + " to stack at " + task, 2220 new RuntimeException("here").fillInStackTrace()); 2221 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2222 + " in to resetting task " + task); 2223 mWindowManager.setAppGroupId(p.appToken, taskId); 2224 } 2225 mWindowManager.moveTaskToTop(taskId); 2226 if (VALIDATE_TOKENS) { 2227 validateAppTokensLocked(); 2228 } 2229 2230 // Now we've moved it in to place... but what if this is 2231 // a singleTop activity and we have put it on top of another 2232 // instance of the same activity? Then we drop the instance 2233 // below so it remains singleTop. 2234 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2235 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2236 int targetNdx = taskActivities.indexOf(target); 2237 if (targetNdx > 0) { 2238 ActivityRecord p = taskActivities.get(targetNdx - 1); 2239 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2240 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2241 false); 2242 } 2243 } 2244 } 2245 } 2246 2247 replyChainEnd = -1; 2248 } 2249 } 2250 return taskInsertionPoint; 2251 } 2252 2253 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2254 ActivityRecord newActivity) { 2255 boolean forceReset = 2256 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2257 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2258 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2259 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2260 forceReset = true; 2261 } 2262 } 2263 2264 final TaskRecord task = taskTop.task; 2265 2266 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2267 * for remaining tasks. Used for later tasks to reparent to task. */ 2268 boolean taskFound = false; 2269 2270 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2271 ActivityOptions topOptions = null; 2272 2273 // Preserve the location for reparenting in the new task. 2274 int reparentInsertionPoint = -1; 2275 2276 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2277 final TaskRecord targetTask = mTaskHistory.get(i); 2278 2279 if (targetTask == task) { 2280 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2281 taskFound = true; 2282 } else { 2283 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2284 taskFound, forceReset, reparentInsertionPoint); 2285 } 2286 } 2287 2288 int taskNdx = mTaskHistory.indexOf(task); 2289 do { 2290 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2291 } while (taskTop == null && taskNdx >= 0); 2292 2293 if (topOptions != null) { 2294 // If we got some ActivityOptions from an activity on top that 2295 // was removed from the task, propagate them to the new real top. 2296 if (taskTop != null) { 2297 taskTop.updateOptionsLocked(topOptions); 2298 } else { 2299 topOptions.abort(); 2300 } 2301 } 2302 2303 return taskTop; 2304 } 2305 2306 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2307 String resultWho, int requestCode, int resultCode, Intent data) { 2308 2309 if (callingUid > 0) { 2310 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2311 data, r.getUriPermissionsLocked()); 2312 } 2313 2314 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2315 + " : who=" + resultWho + " req=" + requestCode 2316 + " res=" + resultCode + " data=" + data); 2317 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2318 try { 2319 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2320 list.add(new ResultInfo(resultWho, requestCode, 2321 resultCode, data)); 2322 r.app.thread.scheduleSendResult(r.appToken, list); 2323 return; 2324 } catch (Exception e) { 2325 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2326 } 2327 } 2328 2329 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2330 } 2331 2332 private void adjustFocusedActivityLocked(ActivityRecord r) { 2333 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2334 ActivityRecord next = topRunningActivityLocked(null); 2335 if (next != r) { 2336 final TaskRecord task = r.task; 2337 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2338 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2339 } 2340 } 2341 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2342 if (top != null) { 2343 mService.setFocusedActivityLocked(top); 2344 } 2345 } 2346 } 2347 2348 final void stopActivityLocked(ActivityRecord r) { 2349 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2350 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2351 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2352 if (!r.finishing) { 2353 if (!mService.isSleeping()) { 2354 if (DEBUG_STATES) { 2355 Slog.d(TAG, "no-history finish of " + r); 2356 } 2357 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2358 "no-history", false); 2359 } else { 2360 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2361 + " on stop because we're just sleeping"); 2362 } 2363 } 2364 } 2365 2366 if (r.app != null && r.app.thread != null) { 2367 adjustFocusedActivityLocked(r); 2368 r.resumeKeyDispatchingLocked(); 2369 try { 2370 r.stopped = false; 2371 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2372 + " (stop requested)"); 2373 r.state = ActivityState.STOPPING; 2374 if (DEBUG_VISBILITY) Slog.v( 2375 TAG, "Stopping visible=" + r.visible + " for " + r); 2376 if (!r.visible) { 2377 mWindowManager.setAppVisibility(r.appToken, false); 2378 } 2379 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2380 if (mService.isSleepingOrShuttingDown()) { 2381 r.setSleeping(true); 2382 } 2383 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2384 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2385 } catch (Exception e) { 2386 // Maybe just ignore exceptions here... if the process 2387 // has crashed, our death notification will clean things 2388 // up. 2389 Slog.w(TAG, "Exception thrown during pause", e); 2390 // Just in case, assume it to be stopped. 2391 r.stopped = true; 2392 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2393 r.state = ActivityState.STOPPED; 2394 if (r.configDestroy) { 2395 destroyActivityLocked(r, true, false, "stop-except"); 2396 } 2397 } 2398 } 2399 } 2400 2401 /** 2402 * @return Returns true if the activity is being finished, false if for 2403 * some reason it is being left as-is. 2404 */ 2405 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2406 Intent resultData, String reason, boolean oomAdj) { 2407 ActivityRecord r = isInStackLocked(token); 2408 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2409 TAG, "Finishing activity token=" + token + " r=" 2410 + ", result=" + resultCode + ", data=" + resultData 2411 + ", reason=" + reason); 2412 if (r == null) { 2413 return false; 2414 } 2415 2416 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2417 return true; 2418 } 2419 2420 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2421 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2422 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2423 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2424 ActivityRecord r = activities.get(activityNdx); 2425 if (r.resultTo == self && r.requestCode == requestCode) { 2426 if ((r.resultWho == null && resultWho == null) || 2427 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2428 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2429 false); 2430 } 2431 } 2432 } 2433 } 2434 mService.updateOomAdjLocked(); 2435 } 2436 2437 final void finishTopRunningActivityLocked(ProcessRecord app) { 2438 ActivityRecord r = topRunningActivityLocked(null); 2439 if (r != null && r.app == app) { 2440 // If the top running activity is from this crashing 2441 // process, then terminate it to avoid getting in a loop. 2442 Slog.w(TAG, " Force finishing activity " 2443 + r.intent.getComponent().flattenToShortString()); 2444 int taskNdx = mTaskHistory.indexOf(r.task); 2445 int activityNdx = r.task.mActivities.indexOf(r); 2446 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2447 // Also terminate any activities below it that aren't yet 2448 // stopped, to avoid a situation where one will get 2449 // re-start our crashing activity once it gets resumed again. 2450 --activityNdx; 2451 if (activityNdx < 0) { 2452 do { 2453 --taskNdx; 2454 if (taskNdx < 0) { 2455 break; 2456 } 2457 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2458 } while (activityNdx < 0); 2459 } 2460 if (activityNdx >= 0) { 2461 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2462 if (r.state == ActivityState.RESUMED 2463 || r.state == ActivityState.PAUSING 2464 || r.state == ActivityState.PAUSED) { 2465 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2466 Slog.w(TAG, " Force finishing activity " 2467 + r.intent.getComponent().flattenToShortString()); 2468 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2469 } 2470 } 2471 } 2472 } 2473 } 2474 2475 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2476 ArrayList<ActivityRecord> activities = r.task.mActivities; 2477 for (int index = activities.indexOf(r); index >= 0; --index) { 2478 ActivityRecord cur = activities.get(index); 2479 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2480 break; 2481 } 2482 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2483 } 2484 return true; 2485 } 2486 2487 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2488 // send the result 2489 ActivityRecord resultTo = r.resultTo; 2490 if (resultTo != null) { 2491 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2492 + " who=" + r.resultWho + " req=" + r.requestCode 2493 + " res=" + resultCode + " data=" + resultData); 2494 if (r.info.applicationInfo.uid > 0) { 2495 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2496 resultTo.packageName, resultData, 2497 resultTo.getUriPermissionsLocked()); 2498 } 2499 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2500 resultData); 2501 r.resultTo = null; 2502 } 2503 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2504 2505 // Make sure this HistoryRecord is not holding on to other resources, 2506 // because clients have remote IPC references to this object so we 2507 // can't assume that will go away and want to avoid circular IPC refs. 2508 r.results = null; 2509 r.pendingResults = null; 2510 r.newIntents = null; 2511 r.icicle = null; 2512 } 2513 2514 /** 2515 * @return Returns true if this activity has been removed from the history 2516 * list, or false if it is still in the list and will be removed later. 2517 */ 2518 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2519 String reason, boolean oomAdj) { 2520 if (r.finishing) { 2521 Slog.w(TAG, "Duplicate finish request for " + r); 2522 return false; 2523 } 2524 2525 r.makeFinishing(); 2526 final TaskRecord task = r.task; 2527 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2528 r.userId, System.identityHashCode(r), 2529 task.taskId, r.shortComponentName, reason); 2530 final ArrayList<ActivityRecord> activities = task.mActivities; 2531 final int index = activities.indexOf(r); 2532 if (index < (activities.size() - 1)) { 2533 task.setFrontOfTask(); 2534 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2535 // If the caller asked that this activity (and all above it) 2536 // be cleared when the task is reset, don't lose that information, 2537 // but propagate it up to the next activity. 2538 ActivityRecord next = activities.get(index+1); 2539 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2540 } 2541 } 2542 2543 r.pauseKeyDispatchingLocked(); 2544 2545 adjustFocusedActivityLocked(r); 2546 2547 finishActivityResultsLocked(r, resultCode, resultData); 2548 2549 if (mResumedActivity == r) { 2550 boolean endTask = index <= 0; 2551 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2552 "Prepare close transition: finishing " + r); 2553 mWindowManager.prepareAppTransition(endTask 2554 ? AppTransition.TRANSIT_TASK_CLOSE 2555 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2556 2557 // Tell window manager to prepare for this one to be removed. 2558 mWindowManager.setAppVisibility(r.appToken, false); 2559 2560 if (mPausingActivity == null) { 2561 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2562 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2563 startPausingLocked(false, false); 2564 } 2565 2566 if (endTask) { 2567 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2568 } 2569 } else if (r.state != ActivityState.PAUSING) { 2570 // If the activity is PAUSING, we will complete the finish once 2571 // it is done pausing; else we can just directly finish it here. 2572 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2573 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2574 } else { 2575 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2576 } 2577 2578 return false; 2579 } 2580 2581 static final int FINISH_IMMEDIATELY = 0; 2582 static final int FINISH_AFTER_PAUSE = 1; 2583 static final int FINISH_AFTER_VISIBLE = 2; 2584 2585 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2586 // First things first: if this activity is currently visible, 2587 // and the resumed activity is not yet visible, then hold off on 2588 // finishing until the resumed one becomes visible. 2589 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2590 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2591 mStackSupervisor.mStoppingActivities.add(r); 2592 if (mStackSupervisor.mStoppingActivities.size() > 3 2593 || r.frontOfTask && mTaskHistory.size() <= 1) { 2594 // If we already have a few activities waiting to stop, 2595 // then give up on things going idle and start clearing 2596 // them out. Or if r is the last of activity of the last task the stack 2597 // will be empty and must be cleared immediately. 2598 mStackSupervisor.scheduleIdleLocked(); 2599 } else { 2600 mStackSupervisor.checkReadyForSleepLocked(); 2601 } 2602 } 2603 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2604 + " (finish requested)"); 2605 r.state = ActivityState.STOPPING; 2606 if (oomAdj) { 2607 mService.updateOomAdjLocked(); 2608 } 2609 return r; 2610 } 2611 2612 // make sure the record is cleaned out of other places. 2613 mStackSupervisor.mStoppingActivities.remove(r); 2614 mStackSupervisor.mGoingToSleepActivities.remove(r); 2615 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2616 if (mResumedActivity == r) { 2617 mResumedActivity = null; 2618 } 2619 final ActivityState prevState = r.state; 2620 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2621 r.state = ActivityState.FINISHING; 2622 2623 if (mode == FINISH_IMMEDIATELY 2624 || prevState == ActivityState.STOPPED 2625 || prevState == ActivityState.INITIALIZING) { 2626 // If this activity is already stopped, we can just finish 2627 // it right now. 2628 boolean activityRemoved = destroyActivityLocked(r, true, 2629 oomAdj, "finish-imm"); 2630 if (activityRemoved) { 2631 mStackSupervisor.resumeTopActivitiesLocked(); 2632 } 2633 return activityRemoved ? null : r; 2634 } 2635 2636 // Need to go through the full pause cycle to get this 2637 // activity into the stopped state and then finish it. 2638 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2639 mStackSupervisor.mFinishingActivities.add(r); 2640 r.resumeKeyDispatchingLocked(); 2641 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2642 return r; 2643 } 2644 2645 void finishAllActivitiesLocked() { 2646 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2647 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2648 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2649 final ActivityRecord r = activities.get(activityNdx); 2650 if (r.finishing) { 2651 continue; 2652 } 2653 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2654 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2655 } 2656 } 2657 } 2658 2659 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2660 Intent resultData) { 2661 final ActivityRecord srec = ActivityRecord.forToken(token); 2662 final TaskRecord task = srec.task; 2663 final ArrayList<ActivityRecord> activities = task.mActivities; 2664 final int start = activities.indexOf(srec); 2665 if (!mTaskHistory.contains(task) || (start < 0)) { 2666 return false; 2667 } 2668 int finishTo = start - 1; 2669 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2670 boolean foundParentInTask = false; 2671 final ComponentName dest = destIntent.getComponent(); 2672 if (start > 0 && dest != null) { 2673 for (int i = finishTo; i >= 0; i--) { 2674 ActivityRecord r = activities.get(i); 2675 if (r.info.packageName.equals(dest.getPackageName()) && 2676 r.info.name.equals(dest.getClassName())) { 2677 finishTo = i; 2678 parent = r; 2679 foundParentInTask = true; 2680 break; 2681 } 2682 } 2683 } 2684 2685 IActivityController controller = mService.mController; 2686 if (controller != null) { 2687 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2688 if (next != null) { 2689 // ask watcher if this is allowed 2690 boolean resumeOK = true; 2691 try { 2692 resumeOK = controller.activityResuming(next.packageName); 2693 } catch (RemoteException e) { 2694 mService.mController = null; 2695 Watchdog.getInstance().setActivityController(null); 2696 } 2697 2698 if (!resumeOK) { 2699 return false; 2700 } 2701 } 2702 } 2703 final long origId = Binder.clearCallingIdentity(); 2704 for (int i = start; i > finishTo; i--) { 2705 ActivityRecord r = activities.get(i); 2706 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2707 // Only return the supplied result for the first activity finished 2708 resultCode = Activity.RESULT_CANCELED; 2709 resultData = null; 2710 } 2711 2712 if (parent != null && foundParentInTask) { 2713 final int parentLaunchMode = parent.info.launchMode; 2714 final int destIntentFlags = destIntent.getFlags(); 2715 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2716 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2717 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2718 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2719 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2720 } else { 2721 try { 2722 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2723 destIntent.getComponent(), 0, srec.userId); 2724 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2725 null, aInfo, null, null, parent.appToken, null, 2726 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2727 0, null, true, null, null); 2728 foundParentInTask = res == ActivityManager.START_SUCCESS; 2729 } catch (RemoteException e) { 2730 foundParentInTask = false; 2731 } 2732 requestFinishActivityLocked(parent.appToken, resultCode, 2733 resultData, "navigate-up", true); 2734 } 2735 } 2736 Binder.restoreCallingIdentity(origId); 2737 return foundParentInTask; 2738 } 2739 /** 2740 * Perform the common clean-up of an activity record. This is called both 2741 * as part of destroyActivityLocked() (when destroying the client-side 2742 * representation) and cleaning things up as a result of its hosting 2743 * processing going away, in which case there is no remaining client-side 2744 * state to destroy so only the cleanup here is needed. 2745 */ 2746 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2747 boolean setState) { 2748 if (mResumedActivity == r) { 2749 mResumedActivity = null; 2750 } 2751 if (mPausingActivity == r) { 2752 mPausingActivity = null; 2753 } 2754 mService.clearFocusedActivity(r); 2755 2756 r.configDestroy = false; 2757 r.frozenBeforeDestroy = false; 2758 2759 if (setState) { 2760 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2761 r.state = ActivityState.DESTROYED; 2762 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2763 r.app = null; 2764 } 2765 2766 // Make sure this record is no longer in the pending finishes list. 2767 // This could happen, for example, if we are trimming activities 2768 // down to the max limit while they are still waiting to finish. 2769 mStackSupervisor.mFinishingActivities.remove(r); 2770 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2771 2772 // Remove any pending results. 2773 if (r.finishing && r.pendingResults != null) { 2774 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2775 PendingIntentRecord rec = apr.get(); 2776 if (rec != null) { 2777 mService.cancelIntentSenderLocked(rec, false); 2778 } 2779 } 2780 r.pendingResults = null; 2781 } 2782 2783 if (cleanServices) { 2784 cleanUpActivityServicesLocked(r); 2785 } 2786 2787 // Get rid of any pending idle timeouts. 2788 removeTimeoutsForActivityLocked(r); 2789 } 2790 2791 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2792 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2793 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2794 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2795 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2796 r.finishLaunchTickingLocked(); 2797 } 2798 2799 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2800 mStackSupervisor.removeChildActivityContainers(r); 2801 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2802 r.makeFinishing(); 2803 if (DEBUG_ADD_REMOVE) { 2804 RuntimeException here = new RuntimeException("here"); 2805 here.fillInStackTrace(); 2806 Slog.i(TAG, "Removing activity " + r + " from stack"); 2807 } 2808 r.takeFromHistory(); 2809 removeTimeoutsForActivityLocked(r); 2810 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2811 r.state = ActivityState.DESTROYED; 2812 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2813 r.app = null; 2814 mWindowManager.removeAppToken(r.appToken); 2815 if (VALIDATE_TOKENS) { 2816 validateAppTokensLocked(); 2817 } 2818 final TaskRecord task = r.task; 2819 if (task != null && task.removeActivity(r)) { 2820 if (DEBUG_STACK) Slog.i(TAG, 2821 "removeActivityFromHistoryLocked: last activity removed from " + this); 2822 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 2823 task.isOverHomeStack()) { 2824 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2825 } 2826 removeTask(task); 2827 } 2828 cleanUpActivityServicesLocked(r); 2829 r.removeUriPermissionsLocked(); 2830 } 2831 2832 /** 2833 * Perform clean-up of service connections in an activity record. 2834 */ 2835 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2836 // Throw away any services that have been bound by this activity. 2837 if (r.connections != null) { 2838 Iterator<ConnectionRecord> it = r.connections.iterator(); 2839 while (it.hasNext()) { 2840 ConnectionRecord c = it.next(); 2841 mService.mServices.removeConnectionLocked(c, null, r); 2842 } 2843 r.connections = null; 2844 } 2845 } 2846 2847 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2848 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2849 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2850 mHandler.sendMessage(msg); 2851 } 2852 2853 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2854 boolean lastIsOpaque = false; 2855 boolean activityRemoved = false; 2856 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2857 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2858 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2859 final ActivityRecord r = activities.get(activityNdx); 2860 if (r.finishing) { 2861 continue; 2862 } 2863 if (r.fullscreen) { 2864 lastIsOpaque = true; 2865 } 2866 if (owner != null && r.app != owner) { 2867 continue; 2868 } 2869 if (!lastIsOpaque) { 2870 continue; 2871 } 2872 // We can destroy this one if we have its icicle saved and 2873 // it is not in the process of pausing/stopping/finishing. 2874 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2875 && r.haveState && !r.visible && r.stopped 2876 && r.state != ActivityState.DESTROYING 2877 && r.state != ActivityState.DESTROYED) { 2878 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2879 + " resumed=" + mResumedActivity 2880 + " pausing=" + mPausingActivity); 2881 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2882 activityRemoved = true; 2883 } 2884 } 2885 } 2886 } 2887 if (activityRemoved) { 2888 mStackSupervisor.resumeTopActivitiesLocked(); 2889 } 2890 } 2891 2892 /** 2893 * Destroy the current CLIENT SIDE instance of an activity. This may be 2894 * called both when actually finishing an activity, or when performing 2895 * a configuration switch where we destroy the current client-side object 2896 * but then create a new client-side object for this same HistoryRecord. 2897 */ 2898 final boolean destroyActivityLocked(ActivityRecord r, 2899 boolean removeFromApp, boolean oomAdj, String reason) { 2900 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2901 TAG, "Removing activity from " + reason + ": token=" + r 2902 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2903 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2904 r.userId, System.identityHashCode(r), 2905 r.task.taskId, r.shortComponentName, reason); 2906 2907 boolean removedFromHistory = false; 2908 2909 cleanUpActivityLocked(r, false, false); 2910 2911 final boolean hadApp = r.app != null; 2912 2913 if (hadApp) { 2914 if (removeFromApp) { 2915 r.app.activities.remove(r); 2916 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2917 mService.mHeavyWeightProcess = null; 2918 mService.mHandler.sendEmptyMessage( 2919 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2920 } 2921 if (r.app.activities.isEmpty()) { 2922 // No longer have activities, so update LRU list and oom adj. 2923 mService.updateLruProcessLocked(r.app, false, null); 2924 mService.updateOomAdjLocked(); 2925 } 2926 } 2927 2928 boolean skipDestroy = false; 2929 2930 try { 2931 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2932 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2933 r.configChangeFlags); 2934 } catch (Exception e) { 2935 // We can just ignore exceptions here... if the process 2936 // has crashed, our death notification will clean things 2937 // up. 2938 //Slog.w(TAG, "Exception thrown during finish", e); 2939 if (r.finishing) { 2940 removeActivityFromHistoryLocked(r); 2941 removedFromHistory = true; 2942 skipDestroy = true; 2943 } 2944 } 2945 2946 r.nowVisible = false; 2947 2948 // If the activity is finishing, we need to wait on removing it 2949 // from the list to give it a chance to do its cleanup. During 2950 // that time it may make calls back with its token so we need to 2951 // be able to find it on the list and so we don't want to remove 2952 // it from the list yet. Otherwise, we can just immediately put 2953 // it in the destroyed state since we are not removing it from the 2954 // list. 2955 if (r.finishing && !skipDestroy) { 2956 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2957 + " (destroy requested)"); 2958 r.state = ActivityState.DESTROYING; 2959 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2960 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2961 } else { 2962 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2963 r.state = ActivityState.DESTROYED; 2964 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2965 r.app = null; 2966 } 2967 } else { 2968 // remove this record from the history. 2969 if (r.finishing) { 2970 removeActivityFromHistoryLocked(r); 2971 removedFromHistory = true; 2972 } else { 2973 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2974 r.state = ActivityState.DESTROYED; 2975 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2976 r.app = null; 2977 } 2978 } 2979 2980 r.configChangeFlags = 0; 2981 2982 if (!mLRUActivities.remove(r) && hadApp) { 2983 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2984 } 2985 2986 return removedFromHistory; 2987 } 2988 2989 final void activityDestroyedLocked(IBinder token) { 2990 final long origId = Binder.clearCallingIdentity(); 2991 try { 2992 ActivityRecord r = ActivityRecord.forToken(token); 2993 if (r != null) { 2994 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2995 } 2996 2997 if (isInStackLocked(token) != null) { 2998 if (r.state == ActivityState.DESTROYING) { 2999 cleanUpActivityLocked(r, true, false); 3000 removeActivityFromHistoryLocked(r); 3001 } 3002 } 3003 mStackSupervisor.resumeTopActivitiesLocked(); 3004 } finally { 3005 Binder.restoreCallingIdentity(origId); 3006 } 3007 } 3008 3009 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3010 ProcessRecord app, String listName) { 3011 int i = list.size(); 3012 if (DEBUG_CLEANUP) Slog.v( 3013 TAG, "Removing app " + app + " from list " + listName 3014 + " with " + i + " entries"); 3015 while (i > 0) { 3016 i--; 3017 ActivityRecord r = list.get(i); 3018 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3019 if (r.app == app) { 3020 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3021 list.remove(i); 3022 removeTimeoutsForActivityLocked(r); 3023 } 3024 } 3025 } 3026 3027 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3028 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3029 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3030 "mStoppingActivities"); 3031 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3032 "mGoingToSleepActivities"); 3033 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3034 "mWaitingVisibleActivities"); 3035 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3036 "mFinishingActivities"); 3037 3038 boolean hasVisibleActivities = false; 3039 3040 // Clean out the history list. 3041 int i = numActivities(); 3042 if (DEBUG_CLEANUP) Slog.v( 3043 TAG, "Removing app " + app + " from history with " + i + " entries"); 3044 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3045 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3046 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3047 final ActivityRecord r = activities.get(activityNdx); 3048 --i; 3049 if (DEBUG_CLEANUP) Slog.v( 3050 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3051 if (r.app == app) { 3052 boolean remove; 3053 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3054 // Don't currently have state for the activity, or 3055 // it is finishing -- always remove it. 3056 remove = true; 3057 } else if (r.launchCount > 2 && 3058 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3059 // We have launched this activity too many times since it was 3060 // able to run, so give up and remove it. 3061 remove = true; 3062 } else { 3063 // The process may be gone, but the activity lives on! 3064 remove = false; 3065 } 3066 if (remove) { 3067 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3068 RuntimeException here = new RuntimeException("here"); 3069 here.fillInStackTrace(); 3070 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3071 + ": haveState=" + r.haveState 3072 + " stateNotNeeded=" + r.stateNotNeeded 3073 + " finishing=" + r.finishing 3074 + " state=" + r.state, here); 3075 } 3076 if (!r.finishing) { 3077 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3078 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3079 r.userId, System.identityHashCode(r), 3080 r.task.taskId, r.shortComponentName, 3081 "proc died without state saved"); 3082 if (r.state == ActivityState.RESUMED) { 3083 mService.updateUsageStats(r, false); 3084 } 3085 } 3086 removeActivityFromHistoryLocked(r); 3087 3088 } else { 3089 // We have the current state for this activity, so 3090 // it can be restarted later when needed. 3091 if (localLOGV) Slog.v( 3092 TAG, "Keeping entry, setting app to null"); 3093 if (r.visible) { 3094 hasVisibleActivities = true; 3095 } 3096 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3097 + r); 3098 r.app = null; 3099 r.nowVisible = false; 3100 if (!r.haveState) { 3101 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3102 "App died, clearing saved state of " + r); 3103 r.icicle = null; 3104 } 3105 } 3106 3107 cleanUpActivityLocked(r, true, true); 3108 } 3109 } 3110 } 3111 3112 return hasVisibleActivities; 3113 } 3114 3115 final void updateTransitLocked(int transit, Bundle options) { 3116 if (options != null) { 3117 ActivityRecord r = topRunningActivityLocked(null); 3118 if (r != null && r.state != ActivityState.RESUMED) { 3119 r.updateOptionsLocked(options); 3120 } else { 3121 ActivityOptions.abort(options); 3122 } 3123 } 3124 mWindowManager.prepareAppTransition(transit, false); 3125 } 3126 3127 void updateTaskMovement(TaskRecord task, boolean toFront) { 3128 if (task.isPersistable) { 3129 task.mLastTimeMoved = System.currentTimeMillis(); 3130 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3131 // recently will be most negative, tasks sent to the bottom before that will be less 3132 // negative. Similarly for recent tasks moved to the top which will be most positive. 3133 if (!toFront) { 3134 task.mLastTimeMoved *= -1; 3135 } 3136 } 3137 } 3138 3139 void moveHomeStackTaskToTop(int homeStackTaskType) { 3140 final int top = mTaskHistory.size() - 1; 3141 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3142 final TaskRecord task = mTaskHistory.get(taskNdx); 3143 if (task.taskType == homeStackTaskType) { 3144 if (DEBUG_TASKS || DEBUG_STACK) 3145 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3146 mTaskHistory.remove(taskNdx); 3147 mTaskHistory.add(top, task); 3148 updateTaskMovement(task, true); 3149 mWindowManager.moveTaskToTop(task.taskId); 3150 return; 3151 } 3152 } 3153 } 3154 3155 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3156 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3157 3158 final int numTasks = mTaskHistory.size(); 3159 final int index = mTaskHistory.indexOf(tr); 3160 if (numTasks == 0 || index < 0) { 3161 // nothing to do! 3162 if (reason != null && 3163 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3164 ActivityOptions.abort(options); 3165 } else { 3166 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3167 } 3168 return; 3169 } 3170 3171 moveToFront(); 3172 3173 // Shift all activities with this task up to the top 3174 // of the stack, keeping them in the same internal order. 3175 insertTaskAtTop(tr); 3176 3177 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3178 if (reason != null && 3179 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3180 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3181 ActivityRecord r = topRunningActivityLocked(null); 3182 if (r != null) { 3183 mNoAnimActivities.add(r); 3184 } 3185 ActivityOptions.abort(options); 3186 } else { 3187 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3188 } 3189 3190 mWindowManager.moveTaskToTop(tr.taskId); 3191 3192 mStackSupervisor.resumeTopActivitiesLocked(); 3193 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3194 3195 if (VALIDATE_TOKENS) { 3196 validateAppTokensLocked(); 3197 } 3198 } 3199 3200 /** 3201 * Worker method for rearranging history stack. Implements the function of moving all 3202 * activities for a specific task (gathering them if disjoint) into a single group at the 3203 * bottom of the stack. 3204 * 3205 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3206 * to premeptively cancel the move. 3207 * 3208 * @param taskId The taskId to collect and move to the bottom. 3209 * @return Returns true if the move completed, false if not. 3210 */ 3211 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3212 final TaskRecord tr = taskForIdLocked(taskId); 3213 if (tr == null) { 3214 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3215 return false; 3216 } 3217 3218 Slog.i(TAG, "moveTaskToBack: " + tr); 3219 3220 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3221 3222 // If we have a watcher, preflight the move before committing to it. First check 3223 // for *other* available tasks, but if none are available, then try again allowing the 3224 // current task to be selected. 3225 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3226 ActivityRecord next = topRunningActivityLocked(null, taskId); 3227 if (next == null) { 3228 next = topRunningActivityLocked(null, 0); 3229 } 3230 if (next != null) { 3231 // ask watcher if this is allowed 3232 boolean moveOK = true; 3233 try { 3234 moveOK = mService.mController.activityResuming(next.packageName); 3235 } catch (RemoteException e) { 3236 mService.mController = null; 3237 Watchdog.getInstance().setActivityController(null); 3238 } 3239 if (!moveOK) { 3240 return false; 3241 } 3242 } 3243 } 3244 3245 if (DEBUG_TRANSITION) Slog.v(TAG, 3246 "Prepare to back transition: task=" + taskId); 3247 3248 mTaskHistory.remove(tr); 3249 mTaskHistory.add(0, tr); 3250 updateTaskMovement(tr, false); 3251 3252 // There is an assumption that moving a task to the back moves it behind the home activity. 3253 // We make sure here that some activity in the stack will launch home. 3254 int numTasks = mTaskHistory.size(); 3255 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3256 final TaskRecord task = mTaskHistory.get(taskNdx); 3257 if (task.isOverHomeStack()) { 3258 break; 3259 } 3260 if (taskNdx == 1) { 3261 // Set the last task before tr to go to home. 3262 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3263 } 3264 } 3265 3266 if (reason != null && 3267 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3268 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3269 ActivityRecord r = topRunningActivityLocked(null); 3270 if (r != null) { 3271 mNoAnimActivities.add(r); 3272 } 3273 } else { 3274 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3275 } 3276 mWindowManager.moveTaskToBottom(taskId); 3277 3278 if (VALIDATE_TOKENS) { 3279 validateAppTokensLocked(); 3280 } 3281 3282 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3283 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3284 final int taskToReturnTo = tr.getTaskToReturnTo(); 3285 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3286 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3287 } 3288 3289 mStackSupervisor.resumeTopActivitiesLocked(); 3290 return true; 3291 } 3292 3293 static final void logStartActivity(int tag, ActivityRecord r, 3294 TaskRecord task) { 3295 final Uri data = r.intent.getData(); 3296 final String strData = data != null ? data.toSafeString() : null; 3297 3298 EventLog.writeEvent(tag, 3299 r.userId, System.identityHashCode(r), task.taskId, 3300 r.shortComponentName, r.intent.getAction(), 3301 r.intent.getType(), strData, r.intent.getFlags()); 3302 } 3303 3304 /** 3305 * Make sure the given activity matches the current configuration. Returns 3306 * false if the activity had to be destroyed. Returns true if the 3307 * configuration is the same, or the activity will remain running as-is 3308 * for whatever reason. Ensures the HistoryRecord is updated with the 3309 * correct configuration and all other bookkeeping is handled. 3310 */ 3311 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3312 int globalChanges) { 3313 if (mConfigWillChange) { 3314 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3315 "Skipping config check (will change): " + r); 3316 return true; 3317 } 3318 3319 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3320 "Ensuring correct configuration: " + r); 3321 3322 // Short circuit: if the two configurations are the exact same 3323 // object (the common case), then there is nothing to do. 3324 Configuration newConfig = mService.mConfiguration; 3325 if (r.configuration == newConfig && !r.forceNewConfig) { 3326 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3327 "Configuration unchanged in " + r); 3328 return true; 3329 } 3330 3331 // We don't worry about activities that are finishing. 3332 if (r.finishing) { 3333 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3334 "Configuration doesn't matter in finishing " + r); 3335 r.stopFreezingScreenLocked(false); 3336 return true; 3337 } 3338 3339 // Okay we now are going to make this activity have the new config. 3340 // But then we need to figure out how it needs to deal with that. 3341 Configuration oldConfig = r.configuration; 3342 r.configuration = newConfig; 3343 3344 // Determine what has changed. May be nothing, if this is a config 3345 // that has come back from the app after going idle. In that case 3346 // we just want to leave the official config object now in the 3347 // activity and do nothing else. 3348 final int changes = oldConfig.diff(newConfig); 3349 if (changes == 0 && !r.forceNewConfig) { 3350 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3351 "Configuration no differences in " + r); 3352 return true; 3353 } 3354 3355 // If the activity isn't currently running, just leave the new 3356 // configuration and it will pick that up next time it starts. 3357 if (r.app == null || r.app.thread == null) { 3358 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3359 "Configuration doesn't matter not running " + r); 3360 r.stopFreezingScreenLocked(false); 3361 r.forceNewConfig = false; 3362 return true; 3363 } 3364 3365 // Figure out how to handle the changes between the configurations. 3366 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3367 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3368 + Integer.toHexString(changes) + ", handles=0x" 3369 + Integer.toHexString(r.info.getRealConfigChanged()) 3370 + ", newConfig=" + newConfig); 3371 } 3372 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3373 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3374 r.configChangeFlags |= changes; 3375 r.startFreezingScreenLocked(r.app, globalChanges); 3376 r.forceNewConfig = false; 3377 if (r.app == null || r.app.thread == null) { 3378 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3379 "Config is destroying non-running " + r); 3380 destroyActivityLocked(r, true, false, "config"); 3381 } else if (r.state == ActivityState.PAUSING) { 3382 // A little annoying: we are waiting for this activity to 3383 // finish pausing. Let's not do anything now, but just 3384 // flag that it needs to be restarted when done pausing. 3385 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3386 "Config is skipping already pausing " + r); 3387 r.configDestroy = true; 3388 return true; 3389 } else if (r.state == ActivityState.RESUMED) { 3390 // Try to optimize this case: the configuration is changing 3391 // and we need to restart the top, resumed activity. 3392 // Instead of doing the normal handshaking, just say 3393 // "restart!". 3394 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3395 "Config is relaunching resumed " + r); 3396 relaunchActivityLocked(r, r.configChangeFlags, true); 3397 r.configChangeFlags = 0; 3398 } else { 3399 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3400 "Config is relaunching non-resumed " + r); 3401 relaunchActivityLocked(r, r.configChangeFlags, false); 3402 r.configChangeFlags = 0; 3403 } 3404 3405 // All done... tell the caller we weren't able to keep this 3406 // activity around. 3407 return false; 3408 } 3409 3410 // Default case: the activity can handle this new configuration, so 3411 // hand it over. Note that we don't need to give it the new 3412 // configuration, since we always send configuration changes to all 3413 // process when they happen so it can just use whatever configuration 3414 // it last got. 3415 if (r.app != null && r.app.thread != null) { 3416 try { 3417 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3418 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3419 } catch (RemoteException e) { 3420 // If process died, whatever. 3421 } 3422 } 3423 r.stopFreezingScreenLocked(false); 3424 3425 return true; 3426 } 3427 3428 private boolean relaunchActivityLocked(ActivityRecord r, 3429 int changes, boolean andResume) { 3430 List<ResultInfo> results = null; 3431 List<Intent> newIntents = null; 3432 if (andResume) { 3433 results = r.results; 3434 newIntents = r.newIntents; 3435 } 3436 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3437 + " with results=" + results + " newIntents=" + newIntents 3438 + " andResume=" + andResume); 3439 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3440 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3441 r.task.taskId, r.shortComponentName); 3442 3443 r.startFreezingScreenLocked(r.app, 0); 3444 3445 mStackSupervisor.removeChildActivityContainers(r); 3446 3447 try { 3448 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3449 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3450 + r); 3451 r.forceNewConfig = false; 3452 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3453 changes, !andResume, new Configuration(mService.mConfiguration)); 3454 // Note: don't need to call pauseIfSleepingLocked() here, because 3455 // the caller will only pass in 'andResume' if this activity is 3456 // currently resumed, which implies we aren't sleeping. 3457 } catch (RemoteException e) { 3458 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3459 } 3460 3461 if (andResume) { 3462 r.results = null; 3463 r.newIntents = null; 3464 r.state = ActivityState.RESUMED; 3465 } else { 3466 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3467 r.state = ActivityState.PAUSED; 3468 } 3469 3470 return true; 3471 } 3472 3473 boolean willActivityBeVisibleLocked(IBinder token) { 3474 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3475 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3476 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3477 final ActivityRecord r = activities.get(activityNdx); 3478 if (r.appToken == token) { 3479 return true; 3480 } 3481 if (r.fullscreen && !r.finishing) { 3482 return false; 3483 } 3484 } 3485 } 3486 final ActivityRecord r = ActivityRecord.forToken(token); 3487 if (r == null) { 3488 return false; 3489 } 3490 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3491 + " would have returned true for r=" + r); 3492 return !r.finishing; 3493 } 3494 3495 void closeSystemDialogsLocked() { 3496 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3497 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3498 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3499 final ActivityRecord r = activities.get(activityNdx); 3500 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3501 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3502 } 3503 } 3504 } 3505 } 3506 3507 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3508 boolean didSomething = false; 3509 TaskRecord lastTask = null; 3510 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3511 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3512 int numActivities = activities.size(); 3513 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3514 ActivityRecord r = activities.get(activityNdx); 3515 final boolean samePackage = r.packageName.equals(name) 3516 || (name == null && r.userId == userId); 3517 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3518 && (samePackage || r.task == lastTask) 3519 && (r.app == null || evenPersistent || !r.app.persistent)) { 3520 if (!doit) { 3521 if (r.finishing) { 3522 // If this activity is just finishing, then it is not 3523 // interesting as far as something to stop. 3524 continue; 3525 } 3526 return true; 3527 } 3528 didSomething = true; 3529 Slog.i(TAG, " Force finishing activity " + r); 3530 if (samePackage) { 3531 if (r.app != null) { 3532 r.app.removed = true; 3533 } 3534 r.app = null; 3535 } 3536 lastTask = r.task; 3537 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3538 true)) { 3539 // r has been deleted from mActivities, accommodate. 3540 --numActivities; 3541 --activityNdx; 3542 } 3543 } 3544 } 3545 } 3546 return didSomething; 3547 } 3548 3549 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3550 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3551 final TaskRecord task = mTaskHistory.get(taskNdx); 3552 ActivityRecord r = null; 3553 ActivityRecord top = null; 3554 int numActivities = 0; 3555 int numRunning = 0; 3556 final ArrayList<ActivityRecord> activities = task.mActivities; 3557 if (activities.isEmpty()) { 3558 continue; 3559 } 3560 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3561 continue; 3562 } 3563 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3564 r = activities.get(activityNdx); 3565 3566 // Initialize state for next task if needed. 3567 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3568 top = r; 3569 numActivities = numRunning = 0; 3570 } 3571 3572 // Add 'r' into the current task. 3573 numActivities++; 3574 if (r.app != null && r.app.thread != null) { 3575 numRunning++; 3576 } 3577 3578 if (localLOGV) Slog.v( 3579 TAG, r.intent.getComponent().flattenToShortString() 3580 + ": task=" + r.task); 3581 } 3582 3583 RunningTaskInfo ci = new RunningTaskInfo(); 3584 ci.id = task.taskId; 3585 ci.baseActivity = r.intent.getComponent(); 3586 ci.topActivity = top.intent.getComponent(); 3587 ci.lastActiveTime = task.lastActiveTime; 3588 3589 if (top.thumbHolder != null) { 3590 ci.description = top.thumbHolder.lastDescription; 3591 } 3592 ci.numActivities = numActivities; 3593 ci.numRunning = numRunning; 3594 //System.out.println( 3595 // "#" + maxNum + ": " + " descr=" + ci.description); 3596 list.add(ci); 3597 } 3598 } 3599 3600 public void unhandledBackLocked() { 3601 final int top = mTaskHistory.size() - 1; 3602 if (DEBUG_SWITCH) Slog.d( 3603 TAG, "Performing unhandledBack(): top activity at " + top); 3604 if (top >= 0) { 3605 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3606 int activityTop = activities.size() - 1; 3607 if (activityTop > 0) { 3608 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3609 "unhandled-back", true); 3610 } 3611 } 3612 } 3613 3614 /** 3615 * Reset local parameters because an app's activity died. 3616 * @param app The app of the activity that died. 3617 * @return result from removeHistoryRecordsForAppLocked. 3618 */ 3619 boolean handleAppDiedLocked(ProcessRecord app) { 3620 if (mPausingActivity != null && mPausingActivity.app == app) { 3621 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3622 "App died while pausing: " + mPausingActivity); 3623 mPausingActivity = null; 3624 } 3625 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3626 mLastPausedActivity = null; 3627 mLastNoHistoryActivity = null; 3628 } 3629 3630 return removeHistoryRecordsForAppLocked(app); 3631 } 3632 3633 void handleAppCrashLocked(ProcessRecord app) { 3634 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3635 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3636 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3637 final ActivityRecord r = activities.get(activityNdx); 3638 if (r.app == app) { 3639 Slog.w(TAG, " Force finishing activity " 3640 + r.intent.getComponent().flattenToShortString()); 3641 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3642 } 3643 } 3644 } 3645 } 3646 3647 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3648 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3649 boolean printed = false; 3650 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3651 final TaskRecord task = mTaskHistory.get(taskNdx); 3652 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3653 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3654 dumpClient, dumpPackage, needSep, header, 3655 " Task id #" + task.taskId); 3656 if (printed) { 3657 header = null; 3658 } 3659 } 3660 return printed; 3661 } 3662 3663 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3664 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3665 3666 if ("all".equals(name)) { 3667 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3668 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3669 } 3670 } else if ("top".equals(name)) { 3671 final int top = mTaskHistory.size() - 1; 3672 if (top >= 0) { 3673 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3674 int listTop = list.size() - 1; 3675 if (listTop >= 0) { 3676 activities.add(list.get(listTop)); 3677 } 3678 } 3679 } else { 3680 ItemMatcher matcher = new ItemMatcher(); 3681 matcher.build(name); 3682 3683 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3684 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3685 if (matcher.match(r1, r1.intent.getComponent())) { 3686 activities.add(r1); 3687 } 3688 } 3689 } 3690 } 3691 3692 return activities; 3693 } 3694 3695 ActivityRecord restartPackage(String packageName) { 3696 ActivityRecord starting = topRunningActivityLocked(null); 3697 3698 // All activities that came from the package must be 3699 // restarted as if there was a config change. 3700 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3701 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3702 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3703 final ActivityRecord a = activities.get(activityNdx); 3704 if (a.info.packageName.equals(packageName)) { 3705 a.forceNewConfig = true; 3706 if (starting != null && a == starting && a.visible) { 3707 a.startFreezingScreenLocked(starting.app, 3708 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3709 } 3710 } 3711 } 3712 } 3713 3714 return starting; 3715 } 3716 3717 void removeTask(TaskRecord task) { 3718 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3719 mWindowManager.removeTask(task.taskId); 3720 final ActivityRecord r = mResumedActivity; 3721 if (r != null && r.task == task) { 3722 mResumedActivity = null; 3723 } 3724 3725 final int taskNdx = mTaskHistory.indexOf(task); 3726 final int topTaskNdx = mTaskHistory.size() - 1; 3727 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 3728 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 3729 if (!nextTask.isOverHomeStack()) { 3730 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3731 } 3732 } 3733 mTaskHistory.remove(task); 3734 updateTaskMovement(task, true); 3735 3736 if (task.mActivities.isEmpty()) { 3737 final boolean isVoiceSession = task.voiceSession != null; 3738 if (isVoiceSession) { 3739 try { 3740 task.voiceSession.taskFinished(task.intent, task.taskId); 3741 } catch (RemoteException e) { 3742 } 3743 } 3744 if (task.autoRemoveFromRecents() || isVoiceSession) { 3745 // Task creator asked to remove this when done, or this task was a voice 3746 // interaction, so it should not remain on the recent tasks list. 3747 mService.mRecentTasks.remove(task); 3748 } 3749 } 3750 3751 if (mTaskHistory.isEmpty()) { 3752 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3753 if (isOnHomeDisplay()) { 3754 mStackSupervisor.moveHomeStack(!isHomeStack()); 3755 } 3756 if (mStacks != null) { 3757 mStacks.remove(this); 3758 mStacks.add(0, this); 3759 } 3760 } 3761 } 3762 3763 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3764 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3765 boolean toTop) { 3766 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3767 voiceInteractor); 3768 addTask(task, toTop, false); 3769 return task; 3770 } 3771 3772 ArrayList<TaskRecord> getAllTasks() { 3773 return new ArrayList<TaskRecord>(mTaskHistory); 3774 } 3775 3776 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3777 task.stack = this; 3778 if (toTop) { 3779 insertTaskAtTop(task); 3780 } else { 3781 mTaskHistory.add(0, task); 3782 updateTaskMovement(task, false); 3783 } 3784 if (!moving && task.voiceSession != null) { 3785 try { 3786 task.voiceSession.taskStarted(task.intent, task.taskId); 3787 } catch (RemoteException e) { 3788 } 3789 } 3790 } 3791 3792 public int getStackId() { 3793 return mStackId; 3794 } 3795 3796 @Override 3797 public String toString() { 3798 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3799 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3800 } 3801} 3802