ActivityStack.java revision 648c83b4ee5fe825aa4032e0bb32c1d6269b02ad
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.am; 18 19import static com.android.server.am.ActivityManagerService.TAG; 20import static com.android.server.am.ActivityManagerService.localLOGV; 21import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP; 22import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION; 23import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE; 24import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS; 25import static com.android.server.am.ActivityManagerService.DEBUG_STACK; 26import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH; 27import static com.android.server.am.ActivityManagerService.DEBUG_TASKS; 28import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION; 29import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING; 30import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY; 31import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS; 32 33import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 34import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 35import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 37import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 38 39import static com.android.server.am.ActivityStackSupervisor.ActivityContainer.CONTAINER_STATE_HAS_SURFACE; 40 41import android.service.voice.IVoiceInteractionSession; 42import com.android.internal.app.IVoiceInteractor; 43import com.android.internal.os.BatteryStatsImpl; 44import com.android.server.Watchdog; 45import com.android.server.am.ActivityManagerService.ItemMatcher; 46import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 47import com.android.server.wm.AppTransition; 48import com.android.server.wm.TaskGroup; 49import com.android.server.wm.WindowManagerService; 50 51import android.app.Activity; 52import android.app.ActivityManager; 53import android.app.ActivityOptions; 54import android.app.AppGlobals; 55import android.app.IActivityController; 56import android.app.IThumbnailReceiver; 57import android.app.ResultInfo; 58import android.app.ActivityManager.RunningTaskInfo; 59import android.content.ComponentName; 60import android.content.Intent; 61import android.content.pm.ActivityInfo; 62import android.content.pm.PackageManager; 63import android.content.res.Configuration; 64import android.content.res.Resources; 65import android.graphics.Bitmap; 66import android.net.Uri; 67import android.os.Binder; 68import android.os.Bundle; 69import android.os.Debug; 70import android.os.Handler; 71import android.os.IBinder; 72import android.os.Looper; 73import android.os.Message; 74import android.os.RemoteException; 75import android.os.SystemClock; 76import android.os.SystemProperties; 77import android.os.Trace; 78import android.os.UserHandle; 79import android.util.EventLog; 80import android.util.Slog; 81import android.view.Display; 82 83import java.io.FileDescriptor; 84import java.io.PrintWriter; 85import java.lang.ref.WeakReference; 86import java.util.ArrayList; 87import java.util.Iterator; 88import java.util.List; 89import java.util.Objects; 90 91/** 92 * State and management of a single stack of activities. 93 */ 94final class ActivityStack { 95 96 // Ticks during which we check progress while waiting for an app to launch. 97 static final int LAUNCH_TICK = 500; 98 99 // How long we wait until giving up on the last activity to pause. This 100 // is short because it directly impacts the responsiveness of starting the 101 // next activity. 102 static final int PAUSE_TIMEOUT = 500; 103 104 // How long we wait for the activity to tell us it has stopped before 105 // giving up. This is a good amount of time because we really need this 106 // from the application in order to get its saved state. 107 static final int STOP_TIMEOUT = 10*1000; 108 109 // How long we wait until giving up on an activity telling us it has 110 // finished destroying itself. 111 static final int DESTROY_TIMEOUT = 10*1000; 112 113 // How long until we reset a task when the user returns to it. Currently 114 // disabled. 115 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 116 117 // How long between activity launches that we consider safe to not warn 118 // the user about an unexpected activity being launched on top. 119 static final long START_WARN_TIME = 5*1000; 120 121 // Set to false to disable the preview that is shown while a new activity 122 // is being started. 123 static final boolean SHOW_APP_STARTING_PREVIEW = true; 124 125 // How long to wait for all background Activities to redraw following a call to 126 // convertToTranslucent(). 127 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 128 129 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 130 131 enum ActivityState { 132 INITIALIZING, 133 RESUMED, 134 PAUSING, 135 PAUSED, 136 STOPPING, 137 STOPPED, 138 FINISHING, 139 DESTROYING, 140 DESTROYED 141 } 142 143 final ActivityManagerService mService; 144 final WindowManagerService mWindowManager; 145 146 /** 147 * The back history of all previous (and possibly still 148 * running) activities. It contains #TaskRecord objects. 149 */ 150 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 151 152 /** 153 * Used for validating app tokens with window manager. 154 */ 155 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 156 157 /** 158 * List of running activities, sorted by recent usage. 159 * The first entry in the list is the least recently used. 160 * It contains HistoryRecord objects. 161 */ 162 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 163 164 /** 165 * Animations that for the current transition have requested not to 166 * be considered for the transition animation. 167 */ 168 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 169 170 /** 171 * When we are in the process of pausing an activity, before starting the 172 * next one, this variable holds the activity that is currently being paused. 173 */ 174 ActivityRecord mPausingActivity = null; 175 176 /** 177 * This is the last activity that we put into the paused state. This is 178 * used to determine if we need to do an activity transition while sleeping, 179 * when we normally hold the top activity paused. 180 */ 181 ActivityRecord mLastPausedActivity = null; 182 183 /** 184 * Activities that specify No History must be removed once the user navigates away from them. 185 * If the device goes to sleep with such an activity in the paused state then we save it here 186 * and finish it later if another activity replaces it on wakeup. 187 */ 188 ActivityRecord mLastNoHistoryActivity = null; 189 190 /** 191 * Current activity that is resumed, or null if there is none. 192 */ 193 ActivityRecord mResumedActivity = null; 194 195 /** 196 * This is the last activity that has been started. It is only used to 197 * identify when multiple activities are started at once so that the user 198 * can be warned they may not be in the activity they think they are. 199 */ 200 ActivityRecord mLastStartedActivity = null; 201 202 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 203 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 204 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 205 // Activity in mTranslucentActivityWaiting is notified via 206 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 207 // background activity being drawn then the same call will be made with a true value. 208 ActivityRecord mTranslucentActivityWaiting = null; 209 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 210 new ArrayList<ActivityRecord>(); 211 212 /** 213 * Set when we know we are going to be calling updateConfiguration() 214 * soon, so want to skip intermediate config checks. 215 */ 216 boolean mConfigWillChange; 217 218 long mLaunchStartTime = 0; 219 long mFullyDrawnStartTime = 0; 220 221 /** 222 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 223 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 224 */ 225 private ActivityRecord mLastScreenshotActivity = null; 226 private Bitmap mLastScreenshotBitmap = null; 227 228 int mThumbnailWidth = -1; 229 int mThumbnailHeight = -1; 230 231 int mCurrentUser; 232 233 final int mStackId; 234 final ActivityContainer mActivityContainer; 235 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 236 ArrayList<ActivityStack> mStacks; 237 /** The attached Display's unique identifier, or -1 if detached */ 238 int mDisplayId; 239 240 /** Run all ActivityStacks through this */ 241 final ActivityStackSupervisor mStackSupervisor; 242 243 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 244 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 245 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 246 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 247 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 248 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 249 250 static class ScheduleDestroyArgs { 251 final ProcessRecord mOwner; 252 final boolean mOomAdj; 253 final String mReason; 254 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 255 mOwner = owner; 256 mOomAdj = oomAdj; 257 mReason = reason; 258 } 259 } 260 261 final Handler mHandler; 262 263 final class ActivityStackHandler extends Handler { 264 //public Handler() { 265 // if (localLOGV) Slog.v(TAG, "Handler started!"); 266 //} 267 ActivityStackHandler(Looper looper) { 268 super(looper); 269 } 270 271 @Override 272 public void handleMessage(Message msg) { 273 switch (msg.what) { 274 case PAUSE_TIMEOUT_MSG: { 275 ActivityRecord r = (ActivityRecord)msg.obj; 276 // We don't at this point know if the activity is fullscreen, 277 // so we need to be conservative and assume it isn't. 278 Slog.w(TAG, "Activity pause timeout for " + r); 279 synchronized (mService) { 280 if (r.app != null) { 281 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 282 } 283 activityPausedLocked(r.appToken, true); 284 } 285 } break; 286 case LAUNCH_TICK_MSG: { 287 ActivityRecord r = (ActivityRecord)msg.obj; 288 synchronized (mService) { 289 if (r.continueLaunchTickingLocked()) { 290 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 291 } 292 } 293 } break; 294 case DESTROY_TIMEOUT_MSG: { 295 ActivityRecord r = (ActivityRecord)msg.obj; 296 // We don't at this point know if the activity is fullscreen, 297 // so we need to be conservative and assume it isn't. 298 Slog.w(TAG, "Activity destroy timeout for " + r); 299 synchronized (mService) { 300 activityDestroyedLocked(r != null ? r.appToken : null); 301 } 302 } break; 303 case STOP_TIMEOUT_MSG: { 304 ActivityRecord r = (ActivityRecord)msg.obj; 305 // We don't at this point know if the activity is fullscreen, 306 // so we need to be conservative and assume it isn't. 307 Slog.w(TAG, "Activity stop timeout for " + r); 308 synchronized (mService) { 309 if (r.isInHistory()) { 310 activityStoppedLocked(r, null, null, null); 311 } 312 } 313 } break; 314 case DESTROY_ACTIVITIES_MSG: { 315 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 316 synchronized (mService) { 317 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 318 } 319 } break; 320 case TRANSLUCENT_TIMEOUT_MSG: { 321 synchronized (mService) { 322 notifyActivityDrawnLocked(null); 323 } 324 } break; 325 } 326 } 327 } 328 329 int numActivities() { 330 int count = 0; 331 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 332 count += mTaskHistory.get(taskNdx).mActivities.size(); 333 } 334 return count; 335 } 336 337 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 338 mActivityContainer = activityContainer; 339 mStackSupervisor = activityContainer.getOuter(); 340 mService = mStackSupervisor.mService; 341 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 342 mWindowManager = mService.mWindowManager; 343 mStackId = activityContainer.mStackId; 344 mCurrentUser = mService.mCurrentUserId; 345 } 346 347 /** 348 * Checks whether the userid is a profile of the current user. 349 */ 350 private boolean isCurrentProfileLocked(int userId) { 351 if (userId == mCurrentUser) return true; 352 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 353 if (mService.mCurrentProfileIds[i] == userId) return true; 354 } 355 return false; 356 } 357 358 boolean okToShowLocked(ActivityRecord r) { 359 return isCurrentProfileLocked(r.userId) 360 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 361 } 362 363 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 364 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 365 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 366 if (r != null) { 367 return r; 368 } 369 } 370 return null; 371 } 372 373 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 374 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 375 final TaskRecord task = mTaskHistory.get(taskNdx); 376 final ArrayList<ActivityRecord> activities = task.mActivities; 377 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 378 ActivityRecord r = activities.get(activityNdx); 379 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 380 return r; 381 } 382 } 383 } 384 return null; 385 } 386 387 /** 388 * This is a simplified version of topRunningActivityLocked that provides a number of 389 * optional skip-over modes. It is intended for use with the ActivityController hook only. 390 * 391 * @param token If non-null, any history records matching this token will be skipped. 392 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 393 * 394 * @return Returns the HistoryRecord of the next activity on the stack. 395 */ 396 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 397 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 398 TaskRecord task = mTaskHistory.get(taskNdx); 399 if (task.taskId == taskId) { 400 continue; 401 } 402 ArrayList<ActivityRecord> activities = task.mActivities; 403 for (int i = activities.size() - 1; i >= 0; --i) { 404 final ActivityRecord r = activities.get(i); 405 // Note: the taskId check depends on real taskId fields being non-zero 406 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 407 return r; 408 } 409 } 410 } 411 return null; 412 } 413 414 final ActivityRecord topActivity() { 415 // Iterate to find the first non-empty task stack. Note that this code can 416 // be simplified once we stop storing tasks with empty mActivities lists. 417 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 418 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 419 final int topActivityNdx = activities.size() - 1; 420 if (topActivityNdx >= 0) { 421 return activities.get(topActivityNdx); 422 } 423 } 424 return null; 425 } 426 427 final TaskRecord topTask() { 428 final int size = mTaskHistory.size(); 429 if (size > 0) { 430 return mTaskHistory.get(size - 1); 431 } 432 return null; 433 } 434 435 TaskRecord taskForIdLocked(int id) { 436 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 437 final TaskRecord task = mTaskHistory.get(taskNdx); 438 if (task.taskId == id) { 439 return task; 440 } 441 } 442 return null; 443 } 444 445 ActivityRecord isInStackLocked(IBinder token) { 446 final ActivityRecord r = ActivityRecord.forToken(token); 447 if (r != null) { 448 final TaskRecord task = r.task; 449 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 450 if (task.stack != this) Slog.w(TAG, 451 "Illegal state! task does not point to stack it is in."); 452 return r; 453 } 454 } 455 return null; 456 } 457 458 final boolean updateLRUListLocked(ActivityRecord r) { 459 final boolean hadit = mLRUActivities.remove(r); 460 mLRUActivities.add(r); 461 return hadit; 462 } 463 464 final boolean isHomeStack() { 465 return mStackId == HOME_STACK_ID; 466 } 467 468 final boolean isOnHomeDisplay() { 469 return isAttached() && 470 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 471 } 472 473 final void moveToFront() { 474 if (isAttached()) { 475 if (isOnHomeDisplay()) { 476 mStackSupervisor.moveHomeStack(isHomeStack()); 477 } 478 mStacks.remove(this); 479 mStacks.add(this); 480 } 481 } 482 483 final boolean isAttached() { 484 return mStacks != null; 485 } 486 487 /** 488 * Returns the top activity in any existing task matching the given 489 * Intent. Returns null if no such task is found. 490 */ 491 ActivityRecord findTaskLocked(ActivityRecord target) { 492 Intent intent = target.intent; 493 ActivityInfo info = target.info; 494 ComponentName cls = intent.getComponent(); 495 if (info.targetActivity != null) { 496 cls = new ComponentName(info.packageName, info.targetActivity); 497 } 498 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 499 boolean isDocument = intent != null & intent.isDocument(); 500 // If documentData is non-null then it must match the existing task data. 501 Uri documentData = isDocument ? intent.getData() : null; 502 503 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 504 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 505 final TaskRecord task = mTaskHistory.get(taskNdx); 506 if (task.voiceSession != null) { 507 // We never match voice sessions; those always run independently. 508 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 509 continue; 510 } 511 if (task.userId != userId) { 512 // Looking for a different task. 513 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 514 continue; 515 } 516 final ActivityRecord r = task.getTopActivity(); 517 if (r == null || r.finishing || r.userId != userId || 518 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 519 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 520 continue; 521 } 522 523 final Intent taskIntent = task.intent; 524 final Intent affinityIntent = task.affinityIntent; 525 final boolean taskIsDocument; 526 final Uri taskDocumentData; 527 if (taskIntent != null && taskIntent.isDocument()) { 528 taskIsDocument = true; 529 taskDocumentData = taskIntent.getData(); 530 } else if (affinityIntent != null && affinityIntent.isDocument()) { 531 taskIsDocument = true; 532 taskDocumentData = affinityIntent.getData(); 533 } else { 534 taskIsDocument = false; 535 taskDocumentData = null; 536 } 537 538 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 539 + taskIntent.getComponent().flattenToShortString() 540 + "/aff=" + r.task.affinity + " to new cls=" 541 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 542 if (!isDocument && !taskIsDocument && task.affinity != null) { 543 if (task.affinity.equals(target.taskAffinity)) { 544 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 545 return r; 546 } 547 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 548 Objects.equals(documentData, taskDocumentData)) { 549 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 550 //dump(); 551 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 552 + r.intent); 553 return r; 554 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 555 Objects.equals(documentData, taskDocumentData)) { 556 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 557 //dump(); 558 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 559 + r.intent); 560 return r; 561 } else if (DEBUG_TASKS) { 562 Slog.d(TAG, "Not a match: " + task); 563 } 564 } 565 566 return null; 567 } 568 569 /** 570 * Returns the first activity (starting from the top of the stack) that 571 * is the same as the given activity. Returns null if no such activity 572 * is found. 573 */ 574 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 575 ComponentName cls = intent.getComponent(); 576 if (info.targetActivity != null) { 577 cls = new ComponentName(info.packageName, info.targetActivity); 578 } 579 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 580 581 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 582 TaskRecord task = mTaskHistory.get(taskNdx); 583 if (!isCurrentProfileLocked(task.userId)) { 584 return null; 585 } 586 final ArrayList<ActivityRecord> activities = task.mActivities; 587 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 588 ActivityRecord r = activities.get(activityNdx); 589 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 590 //Slog.i(TAG, "Found matching class!"); 591 //dump(); 592 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 593 return r; 594 } 595 } 596 } 597 598 return null; 599 } 600 601 /* 602 * Move the activities around in the stack to bring a user to the foreground. 603 */ 604 final void switchUserLocked(int userId) { 605 if (mCurrentUser == userId) { 606 return; 607 } 608 mCurrentUser = userId; 609 610 // Move userId's tasks to the top. 611 int index = mTaskHistory.size(); 612 for (int i = 0; i < index; ) { 613 TaskRecord task = mTaskHistory.get(i); 614 if (isCurrentProfileLocked(task.userId)) { 615 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 616 " moving " + task + " to top"); 617 mTaskHistory.remove(i); 618 mTaskHistory.add(task); 619 --index; 620 // Use same value for i. 621 } else { 622 ++i; 623 } 624 } 625 if (VALIDATE_TOKENS) { 626 validateAppTokensLocked(); 627 } 628 } 629 630 void minimalResumeActivityLocked(ActivityRecord r) { 631 r.state = ActivityState.RESUMED; 632 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 633 + " (starting new instance)"); 634 r.stopped = false; 635 mResumedActivity = r; 636 r.task.touchActiveTime(); 637 mService.addRecentTaskLocked(r.task); 638 completeResumeLocked(r); 639 mStackSupervisor.checkReadyForSleepLocked(); 640 setLaunchTime(r); 641 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 642 } 643 644 private void startLaunchTraces() { 645 if (mFullyDrawnStartTime != 0) { 646 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 647 } 648 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 649 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 650 } 651 652 private void stopFullyDrawnTraceIfNeeded() { 653 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 654 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 655 mFullyDrawnStartTime = 0; 656 } 657 } 658 659 void setLaunchTime(ActivityRecord r) { 660 if (r.displayStartTime == 0) { 661 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 662 if (mLaunchStartTime == 0) { 663 startLaunchTraces(); 664 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 665 } 666 } else if (mLaunchStartTime == 0) { 667 startLaunchTraces(); 668 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 669 } 670 } 671 672 void clearLaunchTime(ActivityRecord r) { 673 // Make sure that there is no activity waiting for this to launch. 674 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 675 r.displayStartTime = r.fullyDrawnStartTime = 0; 676 } else { 677 mStackSupervisor.removeTimeoutsForActivityLocked(r); 678 mStackSupervisor.scheduleIdleTimeoutLocked(r); 679 } 680 } 681 682 void awakeFromSleepingLocked() { 683 // Ensure activities are no longer sleeping. 684 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 685 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 686 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 687 activities.get(activityNdx).setSleeping(false); 688 } 689 } 690 } 691 692 /** 693 * @return true if something must be done before going to sleep. 694 */ 695 boolean checkReadyForSleepLocked() { 696 if (mResumedActivity != null) { 697 // Still have something resumed; can't sleep until it is paused. 698 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 699 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 700 startPausingLocked(false, true); 701 return true; 702 } 703 if (mPausingActivity != null) { 704 // Still waiting for something to pause; can't sleep yet. 705 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 706 return true; 707 } 708 709 return false; 710 } 711 712 void goToSleep() { 713 ensureActivitiesVisibleLocked(null, 0); 714 715 // Make sure any stopped but visible activities are now sleeping. 716 // This ensures that the activity's onStop() is called. 717 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 718 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 719 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 720 final ActivityRecord r = activities.get(activityNdx); 721 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 722 r.setSleeping(true); 723 } 724 } 725 } 726 } 727 728 public final Bitmap screenshotActivities(ActivityRecord who) { 729 if (who.noDisplay) { 730 return null; 731 } 732 733 TaskRecord tr = who.task; 734 if (mService.getMostRecentTask() != tr && tr.intent != null && 735 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 736 // If this task is being excluded from recents, we don't want to take 737 // the expense of capturing a thumbnail, since we will never show it. 738 return null; 739 } 740 741 Resources res = mService.mContext.getResources(); 742 int w = mThumbnailWidth; 743 int h = mThumbnailHeight; 744 if (w < 0) { 745 Configuration config = res.getConfiguration(); 746 boolean useAlternateRecents = (config.smallestScreenWidthDp < 600); 747 if (useAlternateRecents) { 748 mThumbnailWidth = w = 749 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 750 mThumbnailHeight = h = 751 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 752 } else { 753 mThumbnailWidth = w = 754 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 755 mThumbnailHeight = h = 756 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 757 } 758 } 759 760 if (w > 0) { 761 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 762 || mLastScreenshotActivity.state == ActivityState.RESUMED 763 || mLastScreenshotBitmap.getWidth() != w 764 || mLastScreenshotBitmap.getHeight() != h) { 765 mLastScreenshotActivity = who; 766 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 767 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 768 } 769 if (mLastScreenshotBitmap != null) { 770 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 771 } 772 } 773 return null; 774 } 775 776 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 777 if (mPausingActivity != null) { 778 Slog.e(TAG, "Trying to pause when pause is already pending for " 779 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 780 } 781 ActivityRecord prev = mResumedActivity; 782 if (prev == null) { 783 Slog.e(TAG, "Trying to pause when nothing is resumed", 784 new RuntimeException("here").fillInStackTrace()); 785 mStackSupervisor.resumeTopActivitiesLocked(); 786 return; 787 } 788 789 if (mActivityContainer.mParentActivity == null) { 790 // Top level stack, not a child. Look for child stacks. 791 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 792 } 793 794 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 795 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 796 mResumedActivity = null; 797 mPausingActivity = prev; 798 mLastPausedActivity = prev; 799 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 800 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 801 prev.state = ActivityState.PAUSING; 802 prev.task.touchActiveTime(); 803 clearLaunchTime(prev); 804 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 805 if (next == null || next.noDisplay || next.task != prev.task) { 806 prev.updateThumbnail(screenshotActivities(prev), null); 807 } 808 stopFullyDrawnTraceIfNeeded(); 809 810 mService.updateCpuStats(); 811 812 if (prev.app != null && prev.app.thread != null) { 813 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 814 try { 815 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 816 prev.userId, System.identityHashCode(prev), 817 prev.shortComponentName); 818 mService.updateUsageStats(prev, false); 819 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 820 userLeaving, prev.configChangeFlags); 821 } catch (Exception e) { 822 // Ignore exception, if process died other code will cleanup. 823 Slog.w(TAG, "Exception thrown during pause", e); 824 mPausingActivity = null; 825 mLastPausedActivity = null; 826 mLastNoHistoryActivity = null; 827 } 828 } else { 829 mPausingActivity = null; 830 mLastPausedActivity = null; 831 mLastNoHistoryActivity = null; 832 } 833 834 // If we are not going to sleep, we want to ensure the device is 835 // awake until the next activity is started. 836 if (!mService.isSleepingOrShuttingDown()) { 837 mStackSupervisor.acquireLaunchWakelock(); 838 } 839 840 if (mPausingActivity != null) { 841 // Have the window manager pause its key dispatching until the new 842 // activity has started. If we're pausing the activity just because 843 // the screen is being turned off and the UI is sleeping, don't interrupt 844 // key dispatch; the same activity will pick it up again on wakeup. 845 if (!uiSleeping) { 846 prev.pauseKeyDispatchingLocked(); 847 } else { 848 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 849 } 850 851 // Schedule a pause timeout in case the app doesn't respond. 852 // We don't give it much time because this directly impacts the 853 // responsiveness seen by the user. 854 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 855 msg.obj = prev; 856 prev.pauseTime = SystemClock.uptimeMillis(); 857 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 858 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 859 } else { 860 // This activity failed to schedule the 861 // pause, so just treat it as being paused now. 862 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 863 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 864 } 865 } 866 867 final void activityPausedLocked(IBinder token, boolean timeout) { 868 if (DEBUG_PAUSE) Slog.v( 869 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 870 871 final ActivityRecord r = isInStackLocked(token); 872 if (r != null) { 873 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 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, Bitmap thumbnail, 889 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 (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 896 if (icicle != null) { 897 // If icicle is null, this is happening due to a timeout, so we 898 // haven't really saved the state. 899 r.icicle = icicle; 900 r.haveState = true; 901 r.launchCount = 0; 902 r.updateThumbnail(thumbnail, description); 903 } 904 if (!r.stopped) { 905 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 906 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 907 r.stopped = true; 908 r.state = ActivityState.STOPPED; 909 if (r.finishing) { 910 r.clearOptionsLocked(); 911 } else { 912 if (r.configDestroy) { 913 destroyActivityLocked(r, true, false, "stop-config"); 914 mStackSupervisor.resumeTopActivitiesLocked(); 915 } else { 916 mStackSupervisor.updatePreviousProcessLocked(r); 917 } 918 } 919 } 920 } 921 922 private void completePauseLocked() { 923 ActivityRecord prev = mPausingActivity; 924 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 925 926 if (prev != null) { 927 if (prev.finishing) { 928 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 929 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 930 } else if (prev.app != null) { 931 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 932 if (prev.waitingVisible) { 933 prev.waitingVisible = false; 934 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 935 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 936 TAG, "Complete pause, no longer waiting: " + prev); 937 } 938 if (prev.configDestroy) { 939 // The previous is being paused because the configuration 940 // is changing, which means it is actually stopping... 941 // To juggle the fact that we are also starting a new 942 // instance right now, we need to first completely stop 943 // the current instance before starting the new one. 944 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 945 destroyActivityLocked(prev, true, false, "pause-config"); 946 } else { 947 mStackSupervisor.mStoppingActivities.add(prev); 948 if (mStackSupervisor.mStoppingActivities.size() > 3 || 949 prev.frontOfTask && mTaskHistory.size() <= 1) { 950 // If we already have a few activities waiting to stop, 951 // then give up on things going idle and start clearing 952 // them out. Or if r is the last of activity of the last task the stack 953 // will be empty and must be cleared immediately. 954 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 955 mStackSupervisor.scheduleIdleLocked(); 956 } else { 957 mStackSupervisor.checkReadyForSleepLocked(); 958 } 959 } 960 } else { 961 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 962 prev = null; 963 } 964 mPausingActivity = null; 965 } 966 967 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 968 if (!mService.isSleepingOrShuttingDown()) { 969 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 970 } else { 971 mStackSupervisor.checkReadyForSleepLocked(); 972 ActivityRecord top = topStack.topRunningActivityLocked(null); 973 if (top == null || (prev != null && top != prev)) { 974 // If there are no more activities available to run, 975 // do resume anyway to start something. Also if the top 976 // activity on the stack is not the just paused activity, 977 // we need to go ahead and resume it to ensure we complete 978 // an in-flight app switch. 979 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 980 } 981 } 982 983 if (prev != null) { 984 prev.resumeKeyDispatchingLocked(); 985 986 if (prev.app != null && prev.cpuTimeAtResume > 0 987 && mService.mBatteryStatsService.isOnBattery()) { 988 long diff; 989 synchronized (mService.mProcessCpuThread) { 990 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 991 - prev.cpuTimeAtResume; 992 } 993 if (diff > 0) { 994 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 995 synchronized (bsi) { 996 BatteryStatsImpl.Uid.Proc ps = 997 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 998 prev.info.packageName); 999 if (ps != null) { 1000 ps.addForegroundTimeLocked(diff); 1001 } 1002 } 1003 } 1004 } 1005 prev.cpuTimeAtResume = 0; // reset it 1006 } 1007 } 1008 1009 /** 1010 * Once we know that we have asked an application to put an activity in 1011 * the resumed state (either by launching it or explicitly telling it), 1012 * this function updates the rest of our state to match that fact. 1013 */ 1014 private void completeResumeLocked(ActivityRecord next) { 1015 next.idle = false; 1016 next.results = null; 1017 next.newIntents = null; 1018 if (next.nowVisible) { 1019 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1020 mStackSupervisor.dismissKeyguard(); 1021 } 1022 1023 // schedule an idle timeout in case the app doesn't do it for us. 1024 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1025 1026 mStackSupervisor.reportResumedActivityLocked(next); 1027 1028 next.resumeKeyDispatchingLocked(); 1029 mNoAnimActivities.clear(); 1030 1031 // Mark the point when the activity is resuming 1032 // TODO: To be more accurate, the mark should be before the onCreate, 1033 // not after the onResume. But for subsequent starts, onResume is fine. 1034 if (next.app != null) { 1035 synchronized (mService.mProcessCpuThread) { 1036 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1037 } 1038 } else { 1039 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1040 } 1041 } 1042 1043 /** 1044 * Determine if home should be visible below the passed record. 1045 * @param record activity we are querying for. 1046 * @return true if home is visible below the passed activity, false otherwise. 1047 */ 1048 boolean isActivityOverHome(ActivityRecord record) { 1049 // Start at record and go down, look for either home or a visible fullscreen activity. 1050 final TaskRecord recordTask = record.task; 1051 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1052 TaskRecord task = mTaskHistory.get(taskNdx); 1053 final ArrayList<ActivityRecord> activities = task.mActivities; 1054 final int startNdx = 1055 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1056 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1057 final ActivityRecord r = activities.get(activityNdx); 1058 if (r.isHomeActivity()) { 1059 return true; 1060 } 1061 if (!r.finishing && r.fullscreen) { 1062 // Passed activity is over a fullscreen activity. 1063 return false; 1064 } 1065 } 1066 if (task.mOnTopOfHome) { 1067 // Got to the bottom of a task on top of home without finding a visible fullscreen 1068 // activity. Home is visible. 1069 return true; 1070 } 1071 } 1072 // Got to the bottom of this stack and still don't know. If this is over the home stack 1073 // then record is over home. May not work if we ever get more than two layers. 1074 return mStackSupervisor.isFrontStack(this); 1075 } 1076 1077 private void setVisibile(ActivityRecord r, boolean visible) { 1078 r.visible = visible; 1079 mWindowManager.setAppVisibility(r.appToken, visible); 1080 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1081 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1082 ActivityContainer container = containers.get(containerNdx); 1083 container.setVisible(visible); 1084 } 1085 } 1086 1087 /** 1088 * Version of ensureActivitiesVisible that can easily be called anywhere. 1089 */ 1090 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1091 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1092 } 1093 1094 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1095 boolean forceHomeShown) { 1096 ActivityRecord r = topRunningActivityLocked(null); 1097 return r != null && 1098 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1099 } 1100 1101 /** 1102 * Make sure that all activities that need to be visible (that is, they 1103 * currently can be seen by the user) actually are. 1104 */ 1105 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1106 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1107 if (DEBUG_VISBILITY) Slog.v( 1108 TAG, "ensureActivitiesVisible behind " + top 1109 + " configChanges=0x" + Integer.toHexString(configChanges)); 1110 1111 if (mTranslucentActivityWaiting != top) { 1112 mUndrawnActivitiesBelowTopTranslucent.clear(); 1113 if (mTranslucentActivityWaiting != null) { 1114 // Call the callback with a timeout indication. 1115 notifyActivityDrawnLocked(null); 1116 mTranslucentActivityWaiting = null; 1117 } 1118 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1119 } 1120 1121 // If the top activity is not fullscreen, then we need to 1122 // make sure any activities under it are now visible. 1123 boolean aboveTop = true; 1124 boolean showHomeBehindStack = false; 1125 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1126 !(forceHomeShown && isHomeStack()); 1127 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1128 final TaskRecord task = mTaskHistory.get(taskNdx); 1129 final ArrayList<ActivityRecord> activities = task.mActivities; 1130 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1131 final ActivityRecord r = activities.get(activityNdx); 1132 if (r.finishing) { 1133 continue; 1134 } 1135 if (aboveTop && r != top) { 1136 continue; 1137 } 1138 aboveTop = false; 1139 if (!behindFullscreen) { 1140 if (DEBUG_VISBILITY) Slog.v( 1141 TAG, "Make visible? " + r + " finishing=" + r.finishing 1142 + " state=" + r.state); 1143 1144 final boolean doThisProcess = onlyThisProcess == null 1145 || onlyThisProcess.equals(r.processName); 1146 1147 // First: if this is not the current activity being started, make 1148 // sure it matches the current configuration. 1149 if (r != starting && doThisProcess) { 1150 ensureActivityConfigurationLocked(r, 0); 1151 } 1152 1153 if (r.app == null || r.app.thread == null) { 1154 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1155 // This activity needs to be visible, but isn't even 1156 // running... get it started, but don't resume it 1157 // at this point. 1158 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1159 if (r != starting) { 1160 r.startFreezingScreenLocked(r.app, configChanges); 1161 } 1162 if (!r.visible) { 1163 if (DEBUG_VISBILITY) Slog.v( 1164 TAG, "Starting and making visible: " + r); 1165 setVisibile(r, true); 1166 } 1167 if (r != starting) { 1168 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1169 } 1170 } 1171 1172 } else if (r.visible) { 1173 // If this activity is already visible, then there is nothing 1174 // else to do here. 1175 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1176 r.stopFreezingScreenLocked(false); 1177 1178 } else if (onlyThisProcess == null) { 1179 // This activity is not currently visible, but is running. 1180 // Tell it to become visible. 1181 r.visible = true; 1182 if (r.state != ActivityState.RESUMED && r != starting) { 1183 // If this activity is paused, tell it 1184 // to now show its window. 1185 if (DEBUG_VISBILITY) Slog.v( 1186 TAG, "Making visible and scheduling visibility: " + r); 1187 try { 1188 if (mTranslucentActivityWaiting != null) { 1189 mUndrawnActivitiesBelowTopTranslucent.add(r); 1190 } 1191 setVisibile(r, true); 1192 r.sleeping = false; 1193 r.app.pendingUiClean = true; 1194 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1195 r.stopFreezingScreenLocked(false); 1196 } catch (Exception e) { 1197 // Just skip on any failure; we'll make it 1198 // visible when it next restarts. 1199 Slog.w(TAG, "Exception thrown making visibile: " 1200 + r.intent.getComponent(), e); 1201 } 1202 } 1203 } 1204 1205 // Aggregate current change flags. 1206 configChanges |= r.configChangeFlags; 1207 1208 if (r.fullscreen) { 1209 // At this point, nothing else needs to be shown 1210 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1211 behindFullscreen = true; 1212 showHomeBehindStack = false; 1213 } else if (isActivityOverHome(r)) { 1214 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1215 showHomeBehindStack = true; 1216 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1217 } 1218 } else { 1219 if (DEBUG_VISBILITY) Slog.v( 1220 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1221 + " state=" + r.state 1222 + " behindFullscreen=" + behindFullscreen); 1223 // Now for any activities that aren't visible to the user, make 1224 // sure they no longer are keeping the screen frozen. 1225 if (r.visible) { 1226 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1227 try { 1228 setVisibile(r, false); 1229 switch (r.state) { 1230 case STOPPING: 1231 case STOPPED: 1232 if (r.app != null && r.app.thread != null) { 1233 if (DEBUG_VISBILITY) Slog.v( 1234 TAG, "Scheduling invisibility: " + r); 1235 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1236 } 1237 break; 1238 1239 case INITIALIZING: 1240 case RESUMED: 1241 case PAUSING: 1242 case PAUSED: 1243 // This case created for transitioning activities from 1244 // translucent to opaque {@link Activity#convertToOpaque}. 1245 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1246 mStackSupervisor.mStoppingActivities.add(r); 1247 } 1248 mStackSupervisor.scheduleIdleLocked(); 1249 break; 1250 1251 default: 1252 break; 1253 } 1254 } catch (Exception e) { 1255 // Just skip on any failure; we'll make it 1256 // visible when it next restarts. 1257 Slog.w(TAG, "Exception thrown making hidden: " 1258 + r.intent.getComponent(), e); 1259 } 1260 } else { 1261 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1262 } 1263 } 1264 } 1265 } 1266 return showHomeBehindStack; 1267 } 1268 1269 void convertToTranslucent(ActivityRecord r) { 1270 mTranslucentActivityWaiting = r; 1271 mUndrawnActivitiesBelowTopTranslucent.clear(); 1272 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1273 } 1274 1275 /** 1276 * Called as activities below the top translucent activity are redrawn. When the last one is 1277 * redrawn notify the top activity by calling 1278 * {@link Activity#onTranslucentConversionComplete}. 1279 * 1280 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1281 * occurred and the activity will be notified immediately. 1282 */ 1283 void notifyActivityDrawnLocked(ActivityRecord r) { 1284 mActivityContainer.setDrawn(); 1285 if ((r == null) 1286 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1287 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1288 // The last undrawn activity below the top has just been drawn. If there is an 1289 // opaque activity at the top, notify it that it can become translucent safely now. 1290 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1291 mTranslucentActivityWaiting = null; 1292 mUndrawnActivitiesBelowTopTranslucent.clear(); 1293 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1294 1295 if (waitingActivity != null) { 1296 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1297 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1298 try { 1299 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1300 waitingActivity.appToken, r != null); 1301 } catch (RemoteException e) { 1302 } 1303 } 1304 } 1305 } 1306 } 1307 1308 /** If any activities below the top running one are in the INITIALIZING state and they have a 1309 * starting window displayed then remove that starting window. It is possible that the activity 1310 * in this state will never resumed in which case that starting window will be orphaned. */ 1311 void cancelInitializingActivities() { 1312 final ActivityRecord topActivity = topRunningActivityLocked(null); 1313 boolean aboveTop = true; 1314 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1315 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1316 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1317 final ActivityRecord r = activities.get(activityNdx); 1318 if (aboveTop) { 1319 if (r == topActivity) { 1320 aboveTop = false; 1321 } 1322 continue; 1323 } 1324 1325 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1326 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1327 r.mStartingWindowShown = false; 1328 mWindowManager.removeAppStartingWindow(r.appToken); 1329 } 1330 } 1331 } 1332 } 1333 1334 /** 1335 * Ensure that the top activity in the stack is resumed. 1336 * 1337 * @param prev The previously resumed activity, for when in the process 1338 * of pausing; can be null to call from elsewhere. 1339 * 1340 * @return Returns true if something is being resumed, or false if 1341 * nothing happened. 1342 */ 1343 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1344 return resumeTopActivityLocked(prev, null); 1345 } 1346 1347 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1348 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1349 1350 ActivityRecord parent = mActivityContainer.mParentActivity; 1351 if ((parent != null && parent.state != ActivityState.RESUMED) || 1352 !mActivityContainer.isAttached()) { 1353 // Do not resume this stack if its parent is not resumed. 1354 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1355 return false; 1356 } 1357 1358 cancelInitializingActivities(); 1359 1360 // Find the first activity that is not finishing. 1361 ActivityRecord next = topRunningActivityLocked(null); 1362 1363 // Remember how we'll process this pause/resume situation, and ensure 1364 // that the state is reset however we wind up proceeding. 1365 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1366 mStackSupervisor.mUserLeaving = false; 1367 1368 if (next == null) { 1369 // There are no more activities! Let's just start up the 1370 // Launcher... 1371 ActivityOptions.abort(options); 1372 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1373 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1374 // Only resume home if on home display 1375 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1376 } 1377 1378 next.delayedResume = false; 1379 1380 // If the top activity is the resumed one, nothing to do. 1381 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1382 mStackSupervisor.allResumedActivitiesComplete()) { 1383 // Make sure we have executed any pending transitions, since there 1384 // should be nothing left to do at this point. 1385 mWindowManager.executeAppTransition(); 1386 mNoAnimActivities.clear(); 1387 ActivityOptions.abort(options); 1388 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1389 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1390 return false; 1391 } 1392 1393 final TaskRecord nextTask = next.task; 1394 final TaskRecord prevTask = prev != null ? prev.task : null; 1395 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1396 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1397 if (prevTask == nextTask) { 1398 prevTask.setFrontOfTask(); 1399 } else if (prevTask != topTask()) { 1400 // This task is going away but it was supposed to return to the home task. 1401 // Now the task above it has to return to the home task instead. 1402 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1403 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1404 } else { 1405 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1406 "resumeTopActivityLocked: Launching home next"); 1407 // Only resume home if on home display 1408 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1409 } 1410 } 1411 1412 // If we are sleeping, and there is no resumed activity, and the top 1413 // activity is paused, well that is the state we want. 1414 if (mService.isSleepingOrShuttingDown() 1415 && mLastPausedActivity == next 1416 && mStackSupervisor.allPausedActivitiesComplete()) { 1417 // Make sure we have executed any pending transitions, since there 1418 // should be nothing left to do at this point. 1419 mWindowManager.executeAppTransition(); 1420 mNoAnimActivities.clear(); 1421 ActivityOptions.abort(options); 1422 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1423 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1424 return false; 1425 } 1426 1427 // Make sure that the user who owns this activity is started. If not, 1428 // we will just leave it as is because someone should be bringing 1429 // another user's activities to the top of the stack. 1430 if (mService.mStartedUsers.get(next.userId) == null) { 1431 Slog.w(TAG, "Skipping resume of top activity " + next 1432 + ": user " + next.userId + " is stopped"); 1433 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1434 return false; 1435 } 1436 1437 // The activity may be waiting for stop, but that is no longer 1438 // appropriate for it. 1439 mStackSupervisor.mStoppingActivities.remove(next); 1440 mStackSupervisor.mGoingToSleepActivities.remove(next); 1441 next.sleeping = false; 1442 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1443 1444 next.updateOptionsLocked(options); 1445 1446 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1447 1448 // If we are currently pausing an activity, then don't do anything 1449 // until that is done. 1450 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1451 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1452 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1453 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1454 return false; 1455 } 1456 1457 // Okay we are now going to start a switch, to 'next'. We may first 1458 // have to pause the current activity, but this is an important point 1459 // where we have decided to go to 'next' so keep track of that. 1460 // XXX "App Redirected" dialog is getting too many false positives 1461 // at this point, so turn off for now. 1462 if (false) { 1463 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1464 long now = SystemClock.uptimeMillis(); 1465 final boolean inTime = mLastStartedActivity.startTime != 0 1466 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1467 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1468 final int nextUid = next.info.applicationInfo.uid; 1469 if (inTime && lastUid != nextUid 1470 && lastUid != next.launchedFromUid 1471 && mService.checkPermission( 1472 android.Manifest.permission.STOP_APP_SWITCHES, 1473 -1, next.launchedFromUid) 1474 != PackageManager.PERMISSION_GRANTED) { 1475 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1476 } else { 1477 next.startTime = now; 1478 mLastStartedActivity = next; 1479 } 1480 } else { 1481 next.startTime = SystemClock.uptimeMillis(); 1482 mLastStartedActivity = next; 1483 } 1484 } 1485 1486 // We need to start pausing the current activity so the top one 1487 // can be resumed... 1488 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1489 if (mResumedActivity != null) { 1490 pausing = true; 1491 startPausingLocked(userLeaving, false); 1492 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1493 } 1494 if (pausing) { 1495 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1496 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1497 // At this point we want to put the upcoming activity's process 1498 // at the top of the LRU list, since we know we will be needing it 1499 // very soon and it would be a waste to let it get killed if it 1500 // happens to be sitting towards the end. 1501 if (next.app != null && next.app.thread != null) { 1502 // No reason to do full oom adj update here; we'll let that 1503 // happen whenever it needs to later. 1504 mService.updateLruProcessLocked(next.app, true, null); 1505 } 1506 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1507 return true; 1508 } 1509 1510 // If the most recent activity was noHistory but was only stopped rather 1511 // than stopped+finished because the device went to sleep, we need to make 1512 // sure to finish it as we're making a new activity topmost. 1513 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1514 !mLastNoHistoryActivity.finishing) { 1515 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1516 " on new resume"); 1517 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1518 null, "no-history", false); 1519 mLastNoHistoryActivity = null; 1520 } 1521 1522 if (prev != null && prev != next) { 1523 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1524 prev.waitingVisible = true; 1525 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1526 if (DEBUG_SWITCH) Slog.v( 1527 TAG, "Resuming top, waiting visible to hide: " + prev); 1528 } else { 1529 // The next activity is already visible, so hide the previous 1530 // activity's windows right now so we can show the new one ASAP. 1531 // We only do this if the previous is finishing, which should mean 1532 // it is on top of the one being resumed so hiding it quickly 1533 // is good. Otherwise, we want to do the normal route of allowing 1534 // the resumed activity to be shown so we can decide if the 1535 // previous should actually be hidden depending on whether the 1536 // new one is found to be full-screen or not. 1537 if (prev.finishing) { 1538 mWindowManager.setAppVisibility(prev.appToken, false); 1539 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1540 + prev + ", waitingVisible=" 1541 + (prev != null ? prev.waitingVisible : null) 1542 + ", nowVisible=" + next.nowVisible); 1543 } else { 1544 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1545 + prev + ", waitingVisible=" 1546 + (prev != null ? prev.waitingVisible : null) 1547 + ", nowVisible=" + next.nowVisible); 1548 } 1549 } 1550 } 1551 1552 // Launching this app's activity, make sure the app is no longer 1553 // considered stopped. 1554 try { 1555 AppGlobals.getPackageManager().setPackageStoppedState( 1556 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1557 } catch (RemoteException e1) { 1558 } catch (IllegalArgumentException e) { 1559 Slog.w(TAG, "Failed trying to unstop package " 1560 + next.packageName + ": " + e); 1561 } 1562 1563 // We are starting up the next activity, so tell the window manager 1564 // that the previous one will be hidden soon. This way it can know 1565 // to ignore it when computing the desired screen orientation. 1566 boolean anim = true; 1567 if (prev != null) { 1568 if (prev.finishing) { 1569 if (DEBUG_TRANSITION) Slog.v(TAG, 1570 "Prepare close transition: prev=" + prev); 1571 if (mNoAnimActivities.contains(prev)) { 1572 anim = false; 1573 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1574 } else { 1575 mWindowManager.prepareAppTransition(prev.task == next.task 1576 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1577 : AppTransition.TRANSIT_TASK_CLOSE, false); 1578 } 1579 mWindowManager.setAppWillBeHidden(prev.appToken); 1580 mWindowManager.setAppVisibility(prev.appToken, false); 1581 } else { 1582 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1583 if (mNoAnimActivities.contains(next)) { 1584 anim = false; 1585 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1586 } else { 1587 mWindowManager.prepareAppTransition(prev.task == next.task 1588 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1589 : AppTransition.TRANSIT_TASK_OPEN, false); 1590 } 1591 } 1592 if (false) { 1593 mWindowManager.setAppWillBeHidden(prev.appToken); 1594 mWindowManager.setAppVisibility(prev.appToken, false); 1595 } 1596 } else { 1597 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1598 if (mNoAnimActivities.contains(next)) { 1599 anim = false; 1600 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1601 } else { 1602 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1603 } 1604 } 1605 1606 Bundle resumeAnimOptions = null; 1607 if (anim) { 1608 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1609 if (opts != null) { 1610 resumeAnimOptions = opts.toBundle(); 1611 } 1612 next.applyOptionsLocked(); 1613 } else { 1614 next.clearOptionsLocked(); 1615 } 1616 1617 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1618 if (next.app != null && next.app.thread != null) { 1619 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1620 1621 // This activity is now becoming visible. 1622 mWindowManager.setAppVisibility(next.appToken, true); 1623 1624 // schedule launch ticks to collect information about slow apps. 1625 next.startLaunchTickingLocked(); 1626 1627 ActivityRecord lastResumedActivity = 1628 lastStack == null ? null :lastStack.mResumedActivity; 1629 ActivityState lastState = next.state; 1630 1631 mService.updateCpuStats(); 1632 1633 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1634 next.state = ActivityState.RESUMED; 1635 mResumedActivity = next; 1636 next.task.touchActiveTime(); 1637 mService.addRecentTaskLocked(next.task); 1638 mService.updateLruProcessLocked(next.app, true, null); 1639 updateLRUListLocked(next); 1640 mService.updateOomAdjLocked(); 1641 1642 // Have the window manager re-evaluate the orientation of 1643 // the screen based on the new activity order. 1644 boolean notUpdated = true; 1645 if (mStackSupervisor.isFrontStack(this)) { 1646 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1647 mService.mConfiguration, 1648 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1649 if (config != null) { 1650 next.frozenBeforeDestroy = true; 1651 } 1652 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1653 } 1654 1655 if (notUpdated) { 1656 // The configuration update wasn't able to keep the existing 1657 // instance of the activity, and instead started a new one. 1658 // We should be all done, but let's just make sure our activity 1659 // is still at the top and schedule another run if something 1660 // weird happened. 1661 ActivityRecord nextNext = topRunningActivityLocked(null); 1662 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1663 "Activity config changed during resume: " + next 1664 + ", new next: " + nextNext); 1665 if (nextNext != next) { 1666 // Do over! 1667 mStackSupervisor.scheduleResumeTopActivities(); 1668 } 1669 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1670 mNoAnimActivities.clear(); 1671 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1672 return true; 1673 } 1674 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1675 return false; 1676 } 1677 1678 try { 1679 // Deliver all pending results. 1680 ArrayList<ResultInfo> a = next.results; 1681 if (a != null) { 1682 final int N = a.size(); 1683 if (!next.finishing && N > 0) { 1684 if (DEBUG_RESULTS) Slog.v( 1685 TAG, "Delivering results to " + next 1686 + ": " + a); 1687 next.app.thread.scheduleSendResult(next.appToken, a); 1688 } 1689 } 1690 1691 if (next.newIntents != null) { 1692 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1693 } 1694 1695 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1696 next.userId, System.identityHashCode(next), 1697 next.task.taskId, next.shortComponentName); 1698 1699 next.sleeping = false; 1700 mService.showAskCompatModeDialogLocked(next); 1701 next.app.pendingUiClean = true; 1702 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1703 next.clearOptionsLocked(); 1704 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1705 mService.isNextTransitionForward(), resumeAnimOptions); 1706 1707 mStackSupervisor.checkReadyForSleepLocked(); 1708 1709 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1710 } catch (Exception e) { 1711 // Whoops, need to restart this activity! 1712 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1713 + lastState + ": " + next); 1714 next.state = lastState; 1715 if (lastStack != null) { 1716 lastStack.mResumedActivity = lastResumedActivity; 1717 } 1718 Slog.i(TAG, "Restarting because process died: " + next); 1719 if (!next.hasBeenLaunched) { 1720 next.hasBeenLaunched = true; 1721 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1722 mStackSupervisor.isFrontStack(lastStack)) { 1723 mWindowManager.setAppStartingWindow( 1724 next.appToken, next.packageName, next.theme, 1725 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1726 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1727 next.windowFlags, null, true); 1728 } 1729 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1730 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1731 return true; 1732 } 1733 1734 // From this point on, if something goes wrong there is no way 1735 // to recover the activity. 1736 try { 1737 next.visible = true; 1738 completeResumeLocked(next); 1739 } catch (Exception e) { 1740 // If any exception gets thrown, toss away this 1741 // activity and try the next one. 1742 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1743 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1744 "resume-exception", true); 1745 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1746 return true; 1747 } 1748 next.stopped = false; 1749 1750 } else { 1751 // Whoops, need to restart this activity! 1752 if (!next.hasBeenLaunched) { 1753 next.hasBeenLaunched = true; 1754 } else { 1755 if (SHOW_APP_STARTING_PREVIEW) { 1756 mWindowManager.setAppStartingWindow( 1757 next.appToken, next.packageName, next.theme, 1758 mService.compatibilityInfoForPackageLocked( 1759 next.info.applicationInfo), 1760 next.nonLocalizedLabel, 1761 next.labelRes, next.icon, next.logo, next.windowFlags, 1762 null, true); 1763 } 1764 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1765 } 1766 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1767 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1768 } 1769 1770 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1771 return true; 1772 } 1773 1774 private void insertTaskAtTop(TaskRecord task) { 1775 // If this is being moved to the top by another activity or being launched from the home 1776 // activity, set mOnTopOfHome accordingly. 1777 if (isOnHomeDisplay()) { 1778 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1779 final boolean fromHome = lastStack.isHomeStack(); 1780 if (!isHomeStack() && (fromHome || topTask() != task)) { 1781 task.mOnTopOfHome = fromHome; 1782 } 1783 } else { 1784 task.mOnTopOfHome = false; 1785 } 1786 1787 mTaskHistory.remove(task); 1788 // Now put task at top. 1789 int stackNdx = mTaskHistory.size(); 1790 if (!isCurrentProfileLocked(task.userId)) { 1791 // Put non-current user tasks below current user tasks. 1792 while (--stackNdx >= 0) { 1793 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1794 break; 1795 } 1796 } 1797 ++stackNdx; 1798 } 1799 mTaskHistory.add(stackNdx, task); 1800 } 1801 1802 final void startActivityLocked(ActivityRecord r, boolean newTask, 1803 boolean doResume, boolean keepCurTransition, Bundle options) { 1804 TaskRecord rTask = r.task; 1805 final int taskId = rTask.taskId; 1806 if (taskForIdLocked(taskId) == null || newTask) { 1807 // Last activity in task had been removed or ActivityManagerService is reusing task. 1808 // Insert or replace. 1809 // Might not even be in. 1810 insertTaskAtTop(rTask); 1811 mWindowManager.moveTaskToTop(taskId); 1812 } 1813 TaskRecord task = null; 1814 if (!newTask) { 1815 // If starting in an existing task, find where that is... 1816 boolean startIt = true; 1817 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1818 task = mTaskHistory.get(taskNdx); 1819 if (task == r.task) { 1820 // Here it is! Now, if this is not yet visible to the 1821 // user, then just add it without starting; it will 1822 // get started when the user navigates back to it. 1823 if (!startIt) { 1824 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1825 + task, new RuntimeException("here").fillInStackTrace()); 1826 task.addActivityToTop(r); 1827 r.putInHistory(); 1828 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1829 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1830 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1831 r.userId, r.info.configChanges); 1832 if (VALIDATE_TOKENS) { 1833 validateAppTokensLocked(); 1834 } 1835 ActivityOptions.abort(options); 1836 return; 1837 } 1838 break; 1839 } else if (task.numFullscreen > 0) { 1840 startIt = false; 1841 } 1842 } 1843 } 1844 1845 // Place a new activity at top of stack, so it is next to interact 1846 // with the user. 1847 1848 // If we are not placing the new activity frontmost, we do not want 1849 // to deliver the onUserLeaving callback to the actual frontmost 1850 // activity 1851 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1852 mStackSupervisor.mUserLeaving = false; 1853 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1854 "startActivity() behind front, mUserLeaving=false"); 1855 } 1856 1857 task = r.task; 1858 1859 // Slot the activity into the history stack and proceed 1860 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1861 new RuntimeException("here").fillInStackTrace()); 1862 task.addActivityToTop(r); 1863 task.setFrontOfTask(); 1864 1865 r.putInHistory(); 1866 if (!isHomeStack() || numActivities() > 0) { 1867 // We want to show the starting preview window if we are 1868 // switching to a new task, or the next activity's process is 1869 // not currently running. 1870 boolean showStartingIcon = newTask; 1871 ProcessRecord proc = r.app; 1872 if (proc == null) { 1873 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1874 } 1875 if (proc == null || proc.thread == null) { 1876 showStartingIcon = true; 1877 } 1878 if (DEBUG_TRANSITION) Slog.v(TAG, 1879 "Prepare open transition: starting " + r); 1880 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1881 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1882 mNoAnimActivities.add(r); 1883 } else { 1884 mWindowManager.prepareAppTransition(newTask 1885 ? AppTransition.TRANSIT_TASK_OPEN 1886 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1887 mNoAnimActivities.remove(r); 1888 } 1889 r.updateOptionsLocked(options); 1890 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1891 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1892 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1893 r.info.configChanges); 1894 boolean doShow = true; 1895 if (newTask) { 1896 // Even though this activity is starting fresh, we still need 1897 // to reset it to make sure we apply affinities to move any 1898 // existing activities from other tasks in to it. 1899 // If the caller has requested that the target task be 1900 // reset, then do so. 1901 if ((r.intent.getFlags() 1902 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1903 resetTaskIfNeededLocked(r, r); 1904 doShow = topRunningNonDelayedActivityLocked(null) == r; 1905 } 1906 } 1907 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1908 // Figure out if we are transitioning from another activity that is 1909 // "has the same starting icon" as the next one. This allows the 1910 // window manager to keep the previous window it had previously 1911 // created, if it still had one. 1912 ActivityRecord prev = mResumedActivity; 1913 if (prev != null) { 1914 // We don't want to reuse the previous starting preview if: 1915 // (1) The current activity is in a different task. 1916 if (prev.task != r.task) { 1917 prev = null; 1918 } 1919 // (2) The current activity is already displayed. 1920 else if (prev.nowVisible) { 1921 prev = null; 1922 } 1923 } 1924 mWindowManager.setAppStartingWindow( 1925 r.appToken, r.packageName, r.theme, 1926 mService.compatibilityInfoForPackageLocked( 1927 r.info.applicationInfo), r.nonLocalizedLabel, 1928 r.labelRes, r.icon, r.logo, r.windowFlags, 1929 prev != null ? prev.appToken : null, showStartingIcon); 1930 r.mStartingWindowShown = true; 1931 } 1932 } else { 1933 // If this is the first activity, don't do any fancy animations, 1934 // because there is nothing for it to animate on top of. 1935 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1936 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1937 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1938 r.info.configChanges); 1939 ActivityOptions.abort(options); 1940 } 1941 if (VALIDATE_TOKENS) { 1942 validateAppTokensLocked(); 1943 } 1944 1945 if (doResume) { 1946 mStackSupervisor.resumeTopActivitiesLocked(); 1947 } 1948 } 1949 1950 final void validateAppTokensLocked() { 1951 mValidateAppTokens.clear(); 1952 mValidateAppTokens.ensureCapacity(numActivities()); 1953 final int numTasks = mTaskHistory.size(); 1954 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1955 TaskRecord task = mTaskHistory.get(taskNdx); 1956 final ArrayList<ActivityRecord> activities = task.mActivities; 1957 if (activities.isEmpty()) { 1958 continue; 1959 } 1960 TaskGroup group = new TaskGroup(); 1961 group.taskId = task.taskId; 1962 mValidateAppTokens.add(group); 1963 final int numActivities = activities.size(); 1964 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1965 final ActivityRecord r = activities.get(activityNdx); 1966 group.tokens.add(r.appToken); 1967 } 1968 } 1969 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1970 } 1971 1972 /** 1973 * Perform a reset of the given task, if needed as part of launching it. 1974 * Returns the new HistoryRecord at the top of the task. 1975 */ 1976 /** 1977 * Helper method for #resetTaskIfNeededLocked. 1978 * We are inside of the task being reset... we'll either finish this activity, push it out 1979 * for another task, or leave it as-is. 1980 * @param task The task containing the Activity (taskTop) that might be reset. 1981 * @param forceReset 1982 * @return An ActivityOptions that needs to be processed. 1983 */ 1984 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1985 ActivityOptions topOptions = null; 1986 1987 int replyChainEnd = -1; 1988 boolean canMoveOptions = true; 1989 1990 // We only do this for activities that are not the root of the task (since if we finish 1991 // the root, we may no longer have the task!). 1992 final ArrayList<ActivityRecord> activities = task.mActivities; 1993 final int numActivities = activities.size(); 1994 for (int i = numActivities - 1; i > 0; --i ) { 1995 ActivityRecord target = activities.get(i); 1996 1997 final int flags = target.info.flags; 1998 final boolean finishOnTaskLaunch = 1999 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2000 final boolean allowTaskReparenting = 2001 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2002 final boolean clearWhenTaskReset = 2003 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2004 2005 if (!finishOnTaskLaunch 2006 && !clearWhenTaskReset 2007 && target.resultTo != null) { 2008 // If this activity is sending a reply to a previous 2009 // activity, we can't do anything with it now until 2010 // we reach the start of the reply chain. 2011 // XXX note that we are assuming the result is always 2012 // to the previous activity, which is almost always 2013 // the case but we really shouldn't count on. 2014 if (replyChainEnd < 0) { 2015 replyChainEnd = i; 2016 } 2017 } else if (!finishOnTaskLaunch 2018 && !clearWhenTaskReset 2019 && allowTaskReparenting 2020 && target.taskAffinity != null 2021 && !target.taskAffinity.equals(task.affinity)) { 2022 // If this activity has an affinity for another 2023 // task, then we need to move it out of here. We will 2024 // move it as far out of the way as possible, to the 2025 // bottom of the activity stack. This also keeps it 2026 // correctly ordered with any activities we previously 2027 // moved. 2028 final ThumbnailHolder newThumbHolder; 2029 final TaskRecord targetTask; 2030 final ActivityRecord bottom = 2031 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2032 mTaskHistory.get(0).mActivities.get(0) : null; 2033 if (bottom != null && target.taskAffinity != null 2034 && target.taskAffinity.equals(bottom.task.affinity)) { 2035 // If the activity currently at the bottom has the 2036 // same task affinity as the one we are moving, 2037 // then merge it into the same task. 2038 targetTask = bottom.task; 2039 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2040 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2041 + " out to bottom task " + bottom.task); 2042 } else { 2043 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2044 null, null, null, false); 2045 newThumbHolder = targetTask; 2046 targetTask.affinityIntent = target.intent; 2047 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2048 + " out to new task " + target.task); 2049 } 2050 2051 target.thumbHolder = newThumbHolder; 2052 2053 final int targetTaskId = targetTask.taskId; 2054 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2055 2056 boolean noOptions = canMoveOptions; 2057 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2058 for (int srcPos = start; srcPos >= i; --srcPos) { 2059 final ActivityRecord p = activities.get(srcPos); 2060 if (p.finishing) { 2061 continue; 2062 } 2063 2064 ThumbnailHolder curThumbHolder = p.thumbHolder; 2065 canMoveOptions = false; 2066 if (noOptions && topOptions == null) { 2067 topOptions = p.takeOptionsLocked(); 2068 if (topOptions != null) { 2069 noOptions = false; 2070 } 2071 } 2072 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2073 + task + " adding to task=" + targetTask 2074 + " Callers=" + Debug.getCallers(4)); 2075 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2076 + " out to target's task " + target.task); 2077 p.setTask(targetTask, curThumbHolder, false); 2078 targetTask.addActivityAtBottom(p); 2079 2080 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2081 } 2082 2083 mWindowManager.moveTaskToBottom(targetTaskId); 2084 if (VALIDATE_TOKENS) { 2085 validateAppTokensLocked(); 2086 } 2087 2088 replyChainEnd = -1; 2089 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2090 // If the activity should just be removed -- either 2091 // because it asks for it, or the task should be 2092 // cleared -- then finish it and anything that is 2093 // part of its reply chain. 2094 int end; 2095 if (clearWhenTaskReset) { 2096 // In this case, we want to finish this activity 2097 // and everything above it, so be sneaky and pretend 2098 // like these are all in the reply chain. 2099 end = numActivities - 1; 2100 } else if (replyChainEnd < 0) { 2101 end = i; 2102 } else { 2103 end = replyChainEnd; 2104 } 2105 boolean noOptions = canMoveOptions; 2106 for (int srcPos = i; srcPos <= end; srcPos++) { 2107 ActivityRecord p = activities.get(srcPos); 2108 if (p.finishing) { 2109 continue; 2110 } 2111 canMoveOptions = false; 2112 if (noOptions && topOptions == null) { 2113 topOptions = p.takeOptionsLocked(); 2114 if (topOptions != null) { 2115 noOptions = false; 2116 } 2117 } 2118 if (DEBUG_TASKS) Slog.w(TAG, 2119 "resetTaskIntendedTask: calling finishActivity on " + p); 2120 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2121 end--; 2122 srcPos--; 2123 } 2124 } 2125 replyChainEnd = -1; 2126 } else { 2127 // If we were in the middle of a chain, well the 2128 // activity that started it all doesn't want anything 2129 // special, so leave it all as-is. 2130 replyChainEnd = -1; 2131 } 2132 } 2133 2134 return topOptions; 2135 } 2136 2137 /** 2138 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2139 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2140 * @param affinityTask The task we are looking for an affinity to. 2141 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2142 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2143 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2144 */ 2145 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2146 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2147 int replyChainEnd = -1; 2148 final int taskId = task.taskId; 2149 final String taskAffinity = task.affinity; 2150 2151 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2152 final int numActivities = activities.size(); 2153 // Do not operate on the root Activity. 2154 for (int i = numActivities - 1; i > 0; --i) { 2155 ActivityRecord target = activities.get(i); 2156 2157 final int flags = target.info.flags; 2158 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2159 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2160 2161 if (target.resultTo != null) { 2162 // If this activity is sending a reply to a previous 2163 // activity, we can't do anything with it now until 2164 // we reach the start of the reply chain. 2165 // XXX note that we are assuming the result is always 2166 // to the previous activity, which is almost always 2167 // the case but we really shouldn't count on. 2168 if (replyChainEnd < 0) { 2169 replyChainEnd = i; 2170 } 2171 } else if (topTaskIsHigher 2172 && allowTaskReparenting 2173 && taskAffinity != null 2174 && taskAffinity.equals(target.taskAffinity)) { 2175 // This activity has an affinity for our task. Either remove it if we are 2176 // clearing or move it over to our task. Note that 2177 // we currently punt on the case where we are resetting a 2178 // task that is not at the top but who has activities above 2179 // with an affinity to it... this is really not a normal 2180 // case, and we will need to later pull that task to the front 2181 // and usually at that point we will do the reset and pick 2182 // up those remaining activities. (This only happens if 2183 // someone starts an activity in a new task from an activity 2184 // in a task that is not currently on top.) 2185 if (forceReset || finishOnTaskLaunch) { 2186 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2187 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2188 for (int srcPos = start; srcPos >= i; --srcPos) { 2189 final ActivityRecord p = activities.get(srcPos); 2190 if (p.finishing) { 2191 continue; 2192 } 2193 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2194 } 2195 } else { 2196 if (taskInsertionPoint < 0) { 2197 taskInsertionPoint = task.mActivities.size(); 2198 2199 } 2200 2201 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2202 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2203 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2204 for (int srcPos = start; srcPos >= i; --srcPos) { 2205 final ActivityRecord p = activities.get(srcPos); 2206 p.setTask(task, null, false); 2207 task.addActivityAtIndex(taskInsertionPoint, p); 2208 2209 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2210 + " to stack at " + task, 2211 new RuntimeException("here").fillInStackTrace()); 2212 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2213 + " in to resetting task " + task); 2214 mWindowManager.setAppGroupId(p.appToken, taskId); 2215 } 2216 mWindowManager.moveTaskToTop(taskId); 2217 if (VALIDATE_TOKENS) { 2218 validateAppTokensLocked(); 2219 } 2220 2221 // Now we've moved it in to place... but what if this is 2222 // a singleTop activity and we have put it on top of another 2223 // instance of the same activity? Then we drop the instance 2224 // below so it remains singleTop. 2225 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2226 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2227 int targetNdx = taskActivities.indexOf(target); 2228 if (targetNdx > 0) { 2229 ActivityRecord p = taskActivities.get(targetNdx - 1); 2230 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2231 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2232 false); 2233 } 2234 } 2235 } 2236 } 2237 2238 replyChainEnd = -1; 2239 } 2240 } 2241 return taskInsertionPoint; 2242 } 2243 2244 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2245 ActivityRecord newActivity) { 2246 boolean forceReset = 2247 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2248 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2249 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2250 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2251 forceReset = true; 2252 } 2253 } 2254 2255 final TaskRecord task = taskTop.task; 2256 2257 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2258 * for remaining tasks. Used for later tasks to reparent to task. */ 2259 boolean taskFound = false; 2260 2261 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2262 ActivityOptions topOptions = null; 2263 2264 // Preserve the location for reparenting in the new task. 2265 int reparentInsertionPoint = -1; 2266 2267 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2268 final TaskRecord targetTask = mTaskHistory.get(i); 2269 2270 if (targetTask == task) { 2271 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2272 taskFound = true; 2273 } else { 2274 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2275 taskFound, forceReset, reparentInsertionPoint); 2276 } 2277 } 2278 2279 int taskNdx = mTaskHistory.indexOf(task); 2280 do { 2281 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2282 } while (taskTop == null && taskNdx >= 0); 2283 2284 if (topOptions != null) { 2285 // If we got some ActivityOptions from an activity on top that 2286 // was removed from the task, propagate them to the new real top. 2287 if (taskTop != null) { 2288 taskTop.updateOptionsLocked(topOptions); 2289 } else { 2290 topOptions.abort(); 2291 } 2292 } 2293 2294 return taskTop; 2295 } 2296 2297 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2298 String resultWho, int requestCode, int resultCode, Intent data) { 2299 2300 if (callingUid > 0) { 2301 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2302 data, r.getUriPermissionsLocked()); 2303 } 2304 2305 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2306 + " : who=" + resultWho + " req=" + requestCode 2307 + " res=" + resultCode + " data=" + data); 2308 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2309 try { 2310 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2311 list.add(new ResultInfo(resultWho, requestCode, 2312 resultCode, data)); 2313 r.app.thread.scheduleSendResult(r.appToken, list); 2314 return; 2315 } catch (Exception e) { 2316 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2317 } 2318 } 2319 2320 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2321 } 2322 2323 private void adjustFocusedActivityLocked(ActivityRecord r) { 2324 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2325 ActivityRecord next = topRunningActivityLocked(null); 2326 if (next != r) { 2327 final TaskRecord task = r.task; 2328 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2329 mStackSupervisor.moveHomeToTop(); 2330 } 2331 } 2332 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2333 if (top != null) { 2334 mService.setFocusedActivityLocked(top); 2335 } 2336 } 2337 } 2338 2339 final void stopActivityLocked(ActivityRecord r) { 2340 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2341 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2342 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2343 if (!r.finishing) { 2344 if (!mService.isSleeping()) { 2345 if (DEBUG_STATES) { 2346 Slog.d(TAG, "no-history finish of " + r); 2347 } 2348 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2349 "no-history", false); 2350 } else { 2351 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2352 + " on stop because we're just sleeping"); 2353 } 2354 } 2355 } 2356 2357 if (r.app != null && r.app.thread != null) { 2358 adjustFocusedActivityLocked(r); 2359 r.resumeKeyDispatchingLocked(); 2360 try { 2361 r.stopped = false; 2362 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2363 + " (stop requested)"); 2364 r.state = ActivityState.STOPPING; 2365 if (DEBUG_VISBILITY) Slog.v( 2366 TAG, "Stopping visible=" + r.visible + " for " + r); 2367 if (!r.visible) { 2368 mWindowManager.setAppVisibility(r.appToken, false); 2369 } 2370 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2371 if (mService.isSleepingOrShuttingDown()) { 2372 r.setSleeping(true); 2373 } 2374 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2375 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2376 } catch (Exception e) { 2377 // Maybe just ignore exceptions here... if the process 2378 // has crashed, our death notification will clean things 2379 // up. 2380 Slog.w(TAG, "Exception thrown during pause", e); 2381 // Just in case, assume it to be stopped. 2382 r.stopped = true; 2383 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2384 r.state = ActivityState.STOPPED; 2385 if (r.configDestroy) { 2386 destroyActivityLocked(r, true, false, "stop-except"); 2387 } 2388 } 2389 } 2390 } 2391 2392 /** 2393 * @return Returns true if the activity is being finished, false if for 2394 * some reason it is being left as-is. 2395 */ 2396 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2397 Intent resultData, String reason, boolean oomAdj) { 2398 ActivityRecord r = isInStackLocked(token); 2399 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2400 TAG, "Finishing activity token=" + token + " r=" 2401 + ", result=" + resultCode + ", data=" + resultData 2402 + ", reason=" + reason); 2403 if (r == null) { 2404 return false; 2405 } 2406 2407 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2408 return true; 2409 } 2410 2411 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2412 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2413 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2414 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2415 ActivityRecord r = activities.get(activityNdx); 2416 if (r.resultTo == self && r.requestCode == requestCode) { 2417 if ((r.resultWho == null && resultWho == null) || 2418 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2419 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2420 false); 2421 } 2422 } 2423 } 2424 } 2425 mService.updateOomAdjLocked(); 2426 } 2427 2428 final void finishTopRunningActivityLocked(ProcessRecord app) { 2429 ActivityRecord r = topRunningActivityLocked(null); 2430 if (r != null && r.app == app) { 2431 // If the top running activity is from this crashing 2432 // process, then terminate it to avoid getting in a loop. 2433 Slog.w(TAG, " Force finishing activity " 2434 + r.intent.getComponent().flattenToShortString()); 2435 int taskNdx = mTaskHistory.indexOf(r.task); 2436 int activityNdx = r.task.mActivities.indexOf(r); 2437 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2438 // Also terminate any activities below it that aren't yet 2439 // stopped, to avoid a situation where one will get 2440 // re-start our crashing activity once it gets resumed again. 2441 --activityNdx; 2442 if (activityNdx < 0) { 2443 do { 2444 --taskNdx; 2445 if (taskNdx < 0) { 2446 break; 2447 } 2448 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2449 } while (activityNdx < 0); 2450 } 2451 if (activityNdx >= 0) { 2452 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2453 if (r.state == ActivityState.RESUMED 2454 || r.state == ActivityState.PAUSING 2455 || r.state == ActivityState.PAUSED) { 2456 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2457 Slog.w(TAG, " Force finishing activity " 2458 + r.intent.getComponent().flattenToShortString()); 2459 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2460 } 2461 } 2462 } 2463 } 2464 } 2465 2466 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2467 ArrayList<ActivityRecord> activities = r.task.mActivities; 2468 for (int index = activities.indexOf(r); index >= 0; --index) { 2469 ActivityRecord cur = activities.get(index); 2470 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2471 break; 2472 } 2473 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2474 } 2475 return true; 2476 } 2477 2478 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2479 // send the result 2480 ActivityRecord resultTo = r.resultTo; 2481 if (resultTo != null) { 2482 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2483 + " who=" + r.resultWho + " req=" + r.requestCode 2484 + " res=" + resultCode + " data=" + resultData); 2485 if (r.info.applicationInfo.uid > 0) { 2486 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2487 resultTo.packageName, resultData, 2488 resultTo.getUriPermissionsLocked()); 2489 } 2490 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2491 resultData); 2492 r.resultTo = null; 2493 } 2494 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2495 2496 // Make sure this HistoryRecord is not holding on to other resources, 2497 // because clients have remote IPC references to this object so we 2498 // can't assume that will go away and want to avoid circular IPC refs. 2499 r.results = null; 2500 r.pendingResults = null; 2501 r.newIntents = null; 2502 r.icicle = null; 2503 } 2504 2505 /** 2506 * @return Returns true if this activity has been removed from the history 2507 * list, or false if it is still in the list and will be removed later. 2508 */ 2509 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2510 String reason, boolean oomAdj) { 2511 if (r.finishing) { 2512 Slog.w(TAG, "Duplicate finish request for " + r); 2513 return false; 2514 } 2515 2516 r.makeFinishing(); 2517 final TaskRecord task = r.task; 2518 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2519 r.userId, System.identityHashCode(r), 2520 task.taskId, r.shortComponentName, reason); 2521 final ArrayList<ActivityRecord> activities = task.mActivities; 2522 final int index = activities.indexOf(r); 2523 if (index < (activities.size() - 1)) { 2524 task.setFrontOfTask(); 2525 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2526 // If the caller asked that this activity (and all above it) 2527 // be cleared when the task is reset, don't lose that information, 2528 // but propagate it up to the next activity. 2529 ActivityRecord next = activities.get(index+1); 2530 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2531 } 2532 } 2533 2534 r.pauseKeyDispatchingLocked(); 2535 2536 adjustFocusedActivityLocked(r); 2537 2538 finishActivityResultsLocked(r, resultCode, resultData); 2539 2540 if (!mService.mPendingThumbnails.isEmpty()) { 2541 // There are clients waiting to receive thumbnails so, in case 2542 // this is an activity that someone is waiting for, add it 2543 // to the pending list so we can correctly update the clients. 2544 mStackSupervisor.mCancelledThumbnails.add(r); 2545 } 2546 2547 if (mResumedActivity == r) { 2548 boolean endTask = index <= 0; 2549 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2550 "Prepare close transition: finishing " + r); 2551 mWindowManager.prepareAppTransition(endTask 2552 ? AppTransition.TRANSIT_TASK_CLOSE 2553 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2554 2555 // Tell window manager to prepare for this one to be removed. 2556 mWindowManager.setAppVisibility(r.appToken, false); 2557 2558 if (mPausingActivity == null) { 2559 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2560 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2561 startPausingLocked(false, false); 2562 } 2563 2564 if (endTask) { 2565 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2566 } 2567 } else if (r.state != ActivityState.PAUSING) { 2568 // If the activity is PAUSING, we will complete the finish once 2569 // it is done pausing; else we can just directly finish it here. 2570 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2571 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2572 } else { 2573 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2574 } 2575 2576 return false; 2577 } 2578 2579 static final int FINISH_IMMEDIATELY = 0; 2580 static final int FINISH_AFTER_PAUSE = 1; 2581 static final int FINISH_AFTER_VISIBLE = 2; 2582 2583 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2584 // First things first: if this activity is currently visible, 2585 // and the resumed activity is not yet visible, then hold off on 2586 // finishing until the resumed one becomes visible. 2587 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2588 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2589 mStackSupervisor.mStoppingActivities.add(r); 2590 if (mStackSupervisor.mStoppingActivities.size() > 3 2591 || r.frontOfTask && mTaskHistory.size() <= 1) { 2592 // If we already have a few activities waiting to stop, 2593 // then give up on things going idle and start clearing 2594 // them out. Or if r is the last of activity of the last task the stack 2595 // will be empty and must be cleared immediately. 2596 mStackSupervisor.scheduleIdleLocked(); 2597 } else { 2598 mStackSupervisor.checkReadyForSleepLocked(); 2599 } 2600 } 2601 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2602 + " (finish requested)"); 2603 r.state = ActivityState.STOPPING; 2604 if (oomAdj) { 2605 mService.updateOomAdjLocked(); 2606 } 2607 return r; 2608 } 2609 2610 // make sure the record is cleaned out of other places. 2611 mStackSupervisor.mStoppingActivities.remove(r); 2612 mStackSupervisor.mGoingToSleepActivities.remove(r); 2613 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2614 if (mResumedActivity == r) { 2615 mResumedActivity = null; 2616 } 2617 final ActivityState prevState = r.state; 2618 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2619 r.state = ActivityState.FINISHING; 2620 2621 if (mode == FINISH_IMMEDIATELY 2622 || prevState == ActivityState.STOPPED 2623 || prevState == ActivityState.INITIALIZING) { 2624 // If this activity is already stopped, we can just finish 2625 // it right now. 2626 boolean activityRemoved = destroyActivityLocked(r, true, 2627 oomAdj, "finish-imm"); 2628 if (activityRemoved) { 2629 mStackSupervisor.resumeTopActivitiesLocked(); 2630 } 2631 return activityRemoved ? null : r; 2632 } 2633 2634 // Need to go through the full pause cycle to get this 2635 // activity into the stopped state and then finish it. 2636 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2637 mStackSupervisor.mFinishingActivities.add(r); 2638 r.resumeKeyDispatchingLocked(); 2639 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2640 return r; 2641 } 2642 2643 void finishAllActivitiesLocked() { 2644 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2645 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2646 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2647 final ActivityRecord r = activities.get(activityNdx); 2648 if (r.finishing) { 2649 continue; 2650 } 2651 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2652 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2653 } 2654 } 2655 } 2656 2657 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2658 Intent resultData) { 2659 final ActivityRecord srec = ActivityRecord.forToken(token); 2660 final TaskRecord task = srec.task; 2661 final ArrayList<ActivityRecord> activities = task.mActivities; 2662 final int start = activities.indexOf(srec); 2663 if (!mTaskHistory.contains(task) || (start < 0)) { 2664 return false; 2665 } 2666 int finishTo = start - 1; 2667 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2668 boolean foundParentInTask = false; 2669 final ComponentName dest = destIntent.getComponent(); 2670 if (start > 0 && dest != null) { 2671 for (int i = finishTo; i >= 0; i--) { 2672 ActivityRecord r = activities.get(i); 2673 if (r.info.packageName.equals(dest.getPackageName()) && 2674 r.info.name.equals(dest.getClassName())) { 2675 finishTo = i; 2676 parent = r; 2677 foundParentInTask = true; 2678 break; 2679 } 2680 } 2681 } 2682 2683 IActivityController controller = mService.mController; 2684 if (controller != null) { 2685 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2686 if (next != null) { 2687 // ask watcher if this is allowed 2688 boolean resumeOK = true; 2689 try { 2690 resumeOK = controller.activityResuming(next.packageName); 2691 } catch (RemoteException e) { 2692 mService.mController = null; 2693 Watchdog.getInstance().setActivityController(null); 2694 } 2695 2696 if (!resumeOK) { 2697 return false; 2698 } 2699 } 2700 } 2701 final long origId = Binder.clearCallingIdentity(); 2702 for (int i = start; i > finishTo; i--) { 2703 ActivityRecord r = activities.get(i); 2704 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2705 // Only return the supplied result for the first activity finished 2706 resultCode = Activity.RESULT_CANCELED; 2707 resultData = null; 2708 } 2709 2710 if (parent != null && foundParentInTask) { 2711 final int parentLaunchMode = parent.info.launchMode; 2712 final int destIntentFlags = destIntent.getFlags(); 2713 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2714 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2715 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2716 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2717 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2718 } else { 2719 try { 2720 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2721 destIntent.getComponent(), 0, srec.userId); 2722 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2723 null, aInfo, null, null, parent.appToken, null, 2724 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2725 0, null, true, null, null); 2726 foundParentInTask = res == ActivityManager.START_SUCCESS; 2727 } catch (RemoteException e) { 2728 foundParentInTask = false; 2729 } 2730 requestFinishActivityLocked(parent.appToken, resultCode, 2731 resultData, "navigate-up", true); 2732 } 2733 } 2734 Binder.restoreCallingIdentity(origId); 2735 return foundParentInTask; 2736 } 2737 /** 2738 * Perform the common clean-up of an activity record. This is called both 2739 * as part of destroyActivityLocked() (when destroying the client-side 2740 * representation) and cleaning things up as a result of its hosting 2741 * processing going away, in which case there is no remaining client-side 2742 * state to destroy so only the cleanup here is needed. 2743 */ 2744 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2745 boolean setState) { 2746 if (mResumedActivity == r) { 2747 mResumedActivity = null; 2748 } 2749 if (mPausingActivity == r) { 2750 mPausingActivity = null; 2751 } 2752 mService.clearFocusedActivity(r); 2753 2754 r.configDestroy = false; 2755 r.frozenBeforeDestroy = false; 2756 2757 if (setState) { 2758 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2759 r.state = ActivityState.DESTROYED; 2760 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2761 r.app = null; 2762 } 2763 2764 // Make sure this record is no longer in the pending finishes list. 2765 // This could happen, for example, if we are trimming activities 2766 // down to the max limit while they are still waiting to finish. 2767 mStackSupervisor.mFinishingActivities.remove(r); 2768 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2769 2770 // Remove any pending results. 2771 if (r.finishing && r.pendingResults != null) { 2772 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2773 PendingIntentRecord rec = apr.get(); 2774 if (rec != null) { 2775 mService.cancelIntentSenderLocked(rec, false); 2776 } 2777 } 2778 r.pendingResults = null; 2779 } 2780 2781 if (cleanServices) { 2782 cleanUpActivityServicesLocked(r); 2783 } 2784 2785 if (!mService.mPendingThumbnails.isEmpty()) { 2786 // There are clients waiting to receive thumbnails so, in case 2787 // this is an activity that someone is waiting for, add it 2788 // to the pending list so we can correctly update the clients. 2789 mStackSupervisor.mCancelledThumbnails.add(r); 2790 } 2791 2792 // Get rid of any pending idle timeouts. 2793 removeTimeoutsForActivityLocked(r); 2794 } 2795 2796 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2797 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2798 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2799 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2800 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2801 r.finishLaunchTickingLocked(); 2802 } 2803 2804 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2805 mStackSupervisor.removeChildActivityContainers(r); 2806 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2807 r.makeFinishing(); 2808 if (DEBUG_ADD_REMOVE) { 2809 RuntimeException here = new RuntimeException("here"); 2810 here.fillInStackTrace(); 2811 Slog.i(TAG, "Removing activity " + r + " from stack"); 2812 } 2813 r.takeFromHistory(); 2814 removeTimeoutsForActivityLocked(r); 2815 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2816 r.state = ActivityState.DESTROYED; 2817 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2818 r.app = null; 2819 mWindowManager.removeAppToken(r.appToken); 2820 if (VALIDATE_TOKENS) { 2821 validateAppTokensLocked(); 2822 } 2823 final TaskRecord task = r.task; 2824 if (task != null && task.removeActivity(r)) { 2825 if (DEBUG_STACK) Slog.i(TAG, 2826 "removeActivityFromHistoryLocked: last activity removed from " + this); 2827 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2828 mStackSupervisor.moveHomeToTop(); 2829 } 2830 removeTask(task); 2831 } 2832 cleanUpActivityServicesLocked(r); 2833 r.removeUriPermissionsLocked(); 2834 } 2835 2836 /** 2837 * Perform clean-up of service connections in an activity record. 2838 */ 2839 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2840 // Throw away any services that have been bound by this activity. 2841 if (r.connections != null) { 2842 Iterator<ConnectionRecord> it = r.connections.iterator(); 2843 while (it.hasNext()) { 2844 ConnectionRecord c = it.next(); 2845 mService.mServices.removeConnectionLocked(c, null, r); 2846 } 2847 r.connections = null; 2848 } 2849 } 2850 2851 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2852 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2853 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2854 mHandler.sendMessage(msg); 2855 } 2856 2857 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2858 boolean lastIsOpaque = false; 2859 boolean activityRemoved = false; 2860 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2861 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2862 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2863 final ActivityRecord r = activities.get(activityNdx); 2864 if (r.finishing) { 2865 continue; 2866 } 2867 if (r.fullscreen) { 2868 lastIsOpaque = true; 2869 } 2870 if (owner != null && r.app != owner) { 2871 continue; 2872 } 2873 if (!lastIsOpaque) { 2874 continue; 2875 } 2876 // We can destroy this one if we have its icicle saved and 2877 // it is not in the process of pausing/stopping/finishing. 2878 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2879 && r.haveState && !r.visible && r.stopped 2880 && r.state != ActivityState.DESTROYING 2881 && r.state != ActivityState.DESTROYED) { 2882 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2883 + " resumed=" + mResumedActivity 2884 + " pausing=" + mPausingActivity); 2885 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2886 activityRemoved = true; 2887 } 2888 } 2889 } 2890 } 2891 if (activityRemoved) { 2892 mStackSupervisor.resumeTopActivitiesLocked(); 2893 } 2894 } 2895 2896 /** 2897 * Destroy the current CLIENT SIDE instance of an activity. This may be 2898 * called both when actually finishing an activity, or when performing 2899 * a configuration switch where we destroy the current client-side object 2900 * but then create a new client-side object for this same HistoryRecord. 2901 */ 2902 final boolean destroyActivityLocked(ActivityRecord r, 2903 boolean removeFromApp, boolean oomAdj, String reason) { 2904 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2905 TAG, "Removing activity from " + reason + ": token=" + r 2906 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2907 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2908 r.userId, System.identityHashCode(r), 2909 r.task.taskId, r.shortComponentName, reason); 2910 2911 boolean removedFromHistory = false; 2912 2913 cleanUpActivityLocked(r, false, false); 2914 2915 final boolean hadApp = r.app != null; 2916 2917 if (hadApp) { 2918 if (removeFromApp) { 2919 r.app.activities.remove(r); 2920 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2921 mService.mHeavyWeightProcess = null; 2922 mService.mHandler.sendEmptyMessage( 2923 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2924 } 2925 if (r.app.activities.isEmpty()) { 2926 // No longer have activities, so update LRU list and oom adj. 2927 mService.updateLruProcessLocked(r.app, false, null); 2928 mService.updateOomAdjLocked(); 2929 } 2930 } 2931 2932 boolean skipDestroy = false; 2933 2934 try { 2935 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2936 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2937 r.configChangeFlags); 2938 } catch (Exception e) { 2939 // We can just ignore exceptions here... if the process 2940 // has crashed, our death notification will clean things 2941 // up. 2942 //Slog.w(TAG, "Exception thrown during finish", e); 2943 if (r.finishing) { 2944 removeActivityFromHistoryLocked(r); 2945 removedFromHistory = true; 2946 skipDestroy = true; 2947 } 2948 } 2949 2950 r.nowVisible = false; 2951 2952 // If the activity is finishing, we need to wait on removing it 2953 // from the list to give it a chance to do its cleanup. During 2954 // that time it may make calls back with its token so we need to 2955 // be able to find it on the list and so we don't want to remove 2956 // it from the list yet. Otherwise, we can just immediately put 2957 // it in the destroyed state since we are not removing it from the 2958 // list. 2959 if (r.finishing && !skipDestroy) { 2960 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2961 + " (destroy requested)"); 2962 r.state = ActivityState.DESTROYING; 2963 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2964 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2965 } else { 2966 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2967 r.state = ActivityState.DESTROYED; 2968 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2969 r.app = null; 2970 } 2971 } else { 2972 // remove this record from the history. 2973 if (r.finishing) { 2974 removeActivityFromHistoryLocked(r); 2975 removedFromHistory = true; 2976 } else { 2977 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2978 r.state = ActivityState.DESTROYED; 2979 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2980 r.app = null; 2981 } 2982 } 2983 2984 r.configChangeFlags = 0; 2985 2986 if (!mLRUActivities.remove(r) && hadApp) { 2987 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2988 } 2989 2990 return removedFromHistory; 2991 } 2992 2993 final void activityDestroyedLocked(IBinder token) { 2994 final long origId = Binder.clearCallingIdentity(); 2995 try { 2996 ActivityRecord r = ActivityRecord.forToken(token); 2997 if (r != null) { 2998 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2999 } 3000 3001 if (isInStackLocked(token) != null) { 3002 if (r.state == ActivityState.DESTROYING) { 3003 cleanUpActivityLocked(r, true, false); 3004 removeActivityFromHistoryLocked(r); 3005 } 3006 } 3007 mStackSupervisor.resumeTopActivitiesLocked(); 3008 } finally { 3009 Binder.restoreCallingIdentity(origId); 3010 } 3011 } 3012 3013 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3014 ProcessRecord app, String listName) { 3015 int i = list.size(); 3016 if (DEBUG_CLEANUP) Slog.v( 3017 TAG, "Removing app " + app + " from list " + listName 3018 + " with " + i + " entries"); 3019 while (i > 0) { 3020 i--; 3021 ActivityRecord r = list.get(i); 3022 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3023 if (r.app == app) { 3024 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3025 list.remove(i); 3026 removeTimeoutsForActivityLocked(r); 3027 } 3028 } 3029 } 3030 3031 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3032 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3033 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3034 "mStoppingActivities"); 3035 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3036 "mGoingToSleepActivities"); 3037 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3038 "mWaitingVisibleActivities"); 3039 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3040 "mFinishingActivities"); 3041 3042 boolean hasVisibleActivities = false; 3043 3044 // Clean out the history list. 3045 int i = numActivities(); 3046 if (DEBUG_CLEANUP) Slog.v( 3047 TAG, "Removing app " + app + " from history with " + i + " entries"); 3048 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3049 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3050 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3051 final ActivityRecord r = activities.get(activityNdx); 3052 --i; 3053 if (DEBUG_CLEANUP) Slog.v( 3054 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3055 if (r.app == app) { 3056 boolean remove; 3057 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3058 // Don't currently have state for the activity, or 3059 // it is finishing -- always remove it. 3060 remove = true; 3061 } else if (r.launchCount > 2 && 3062 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3063 // We have launched this activity too many times since it was 3064 // able to run, so give up and remove it. 3065 remove = true; 3066 } else { 3067 // The process may be gone, but the activity lives on! 3068 remove = false; 3069 } 3070 if (remove) { 3071 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3072 RuntimeException here = new RuntimeException("here"); 3073 here.fillInStackTrace(); 3074 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3075 + ": haveState=" + r.haveState 3076 + " stateNotNeeded=" + r.stateNotNeeded 3077 + " finishing=" + r.finishing 3078 + " state=" + r.state, here); 3079 } 3080 if (!r.finishing) { 3081 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3082 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3083 r.userId, System.identityHashCode(r), 3084 r.task.taskId, r.shortComponentName, 3085 "proc died without state saved"); 3086 if (r.state == ActivityState.RESUMED) { 3087 mService.updateUsageStats(r, false); 3088 } 3089 } 3090 removeActivityFromHistoryLocked(r); 3091 3092 } else { 3093 // We have the current state for this activity, so 3094 // it can be restarted later when needed. 3095 if (localLOGV) Slog.v( 3096 TAG, "Keeping entry, setting app to null"); 3097 if (r.visible) { 3098 hasVisibleActivities = true; 3099 } 3100 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3101 + r); 3102 r.app = null; 3103 r.nowVisible = false; 3104 if (!r.haveState) { 3105 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3106 "App died, clearing saved state of " + r); 3107 r.icicle = null; 3108 } 3109 } 3110 3111 cleanUpActivityLocked(r, true, true); 3112 } 3113 } 3114 } 3115 3116 return hasVisibleActivities; 3117 } 3118 3119 final void updateTransitLocked(int transit, Bundle options) { 3120 if (options != null) { 3121 ActivityRecord r = topRunningActivityLocked(null); 3122 if (r != null && r.state != ActivityState.RESUMED) { 3123 r.updateOptionsLocked(options); 3124 } else { 3125 ActivityOptions.abort(options); 3126 } 3127 } 3128 mWindowManager.prepareAppTransition(transit, false); 3129 } 3130 3131 void moveHomeTaskToTop() { 3132 final int top = mTaskHistory.size() - 1; 3133 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3134 final TaskRecord task = mTaskHistory.get(taskNdx); 3135 if (task.isHomeTask()) { 3136 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3137 mTaskHistory.remove(taskNdx); 3138 mTaskHistory.add(top, task); 3139 mWindowManager.moveTaskToTop(task.taskId); 3140 return; 3141 } 3142 } 3143 } 3144 3145 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3146 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3147 3148 final int numTasks = mTaskHistory.size(); 3149 final int index = mTaskHistory.indexOf(tr); 3150 if (numTasks == 0 || index < 0) { 3151 // nothing to do! 3152 if (reason != null && 3153 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3154 ActivityOptions.abort(options); 3155 } else { 3156 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3157 } 3158 return; 3159 } 3160 3161 moveToFront(); 3162 3163 // Shift all activities with this task up to the top 3164 // of the stack, keeping them in the same internal order. 3165 insertTaskAtTop(tr); 3166 3167 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3168 if (reason != null && 3169 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3170 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3171 ActivityRecord r = topRunningActivityLocked(null); 3172 if (r != null) { 3173 mNoAnimActivities.add(r); 3174 } 3175 ActivityOptions.abort(options); 3176 } else { 3177 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3178 } 3179 3180 mWindowManager.moveTaskToTop(tr.taskId); 3181 3182 mStackSupervisor.resumeTopActivitiesLocked(); 3183 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3184 3185 if (VALIDATE_TOKENS) { 3186 validateAppTokensLocked(); 3187 } 3188 } 3189 3190 /** 3191 * Worker method for rearranging history stack. Implements the function of moving all 3192 * activities for a specific task (gathering them if disjoint) into a single group at the 3193 * bottom of the stack. 3194 * 3195 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3196 * to premeptively cancel the move. 3197 * 3198 * @param taskId The taskId to collect and move to the bottom. 3199 * @return Returns true if the move completed, false if not. 3200 */ 3201 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3202 final TaskRecord tr = taskForIdLocked(taskId); 3203 if (tr == null) { 3204 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3205 return false; 3206 } 3207 3208 Slog.i(TAG, "moveTaskToBack: " + tr); 3209 3210 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3211 3212 // If we have a watcher, preflight the move before committing to it. First check 3213 // for *other* available tasks, but if none are available, then try again allowing the 3214 // current task to be selected. 3215 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3216 ActivityRecord next = topRunningActivityLocked(null, taskId); 3217 if (next == null) { 3218 next = topRunningActivityLocked(null, 0); 3219 } 3220 if (next != null) { 3221 // ask watcher if this is allowed 3222 boolean moveOK = true; 3223 try { 3224 moveOK = mService.mController.activityResuming(next.packageName); 3225 } catch (RemoteException e) { 3226 mService.mController = null; 3227 Watchdog.getInstance().setActivityController(null); 3228 } 3229 if (!moveOK) { 3230 return false; 3231 } 3232 } 3233 } 3234 3235 if (DEBUG_TRANSITION) Slog.v(TAG, 3236 "Prepare to back transition: task=" + taskId); 3237 3238 mTaskHistory.remove(tr); 3239 mTaskHistory.add(0, tr); 3240 3241 // There is an assumption that moving a task to the back moves it behind the home activity. 3242 // We make sure here that some activity in the stack will launch home. 3243 ActivityRecord lastActivity = null; 3244 int numTasks = mTaskHistory.size(); 3245 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3246 final TaskRecord task = mTaskHistory.get(taskNdx); 3247 if (task.mOnTopOfHome) { 3248 break; 3249 } 3250 if (taskNdx == 1) { 3251 // Set the last task before tr to go to home. 3252 task.mOnTopOfHome = true; 3253 } 3254 } 3255 3256 if (reason != null && 3257 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3258 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3259 ActivityRecord r = topRunningActivityLocked(null); 3260 if (r != null) { 3261 mNoAnimActivities.add(r); 3262 } 3263 } else { 3264 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3265 } 3266 mWindowManager.moveTaskToBottom(taskId); 3267 3268 if (VALIDATE_TOKENS) { 3269 validateAppTokensLocked(); 3270 } 3271 3272 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3273 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3274 tr.mOnTopOfHome = false; 3275 return mStackSupervisor.resumeHomeActivity(null); 3276 } 3277 3278 mStackSupervisor.resumeTopActivitiesLocked(); 3279 return true; 3280 } 3281 3282 static final void logStartActivity(int tag, ActivityRecord r, 3283 TaskRecord task) { 3284 final Uri data = r.intent.getData(); 3285 final String strData = data != null ? data.toSafeString() : null; 3286 3287 EventLog.writeEvent(tag, 3288 r.userId, System.identityHashCode(r), task.taskId, 3289 r.shortComponentName, r.intent.getAction(), 3290 r.intent.getType(), strData, r.intent.getFlags()); 3291 } 3292 3293 /** 3294 * Make sure the given activity matches the current configuration. Returns 3295 * false if the activity had to be destroyed. Returns true if the 3296 * configuration is the same, or the activity will remain running as-is 3297 * for whatever reason. Ensures the HistoryRecord is updated with the 3298 * correct configuration and all other bookkeeping is handled. 3299 */ 3300 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3301 int globalChanges) { 3302 if (mConfigWillChange) { 3303 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3304 "Skipping config check (will change): " + r); 3305 return true; 3306 } 3307 3308 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3309 "Ensuring correct configuration: " + r); 3310 3311 // Short circuit: if the two configurations are the exact same 3312 // object (the common case), then there is nothing to do. 3313 Configuration newConfig = mService.mConfiguration; 3314 if (r.configuration == newConfig && !r.forceNewConfig) { 3315 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3316 "Configuration unchanged in " + r); 3317 return true; 3318 } 3319 3320 // We don't worry about activities that are finishing. 3321 if (r.finishing) { 3322 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3323 "Configuration doesn't matter in finishing " + r); 3324 r.stopFreezingScreenLocked(false); 3325 return true; 3326 } 3327 3328 // Okay we now are going to make this activity have the new config. 3329 // But then we need to figure out how it needs to deal with that. 3330 Configuration oldConfig = r.configuration; 3331 r.configuration = newConfig; 3332 3333 // Determine what has changed. May be nothing, if this is a config 3334 // that has come back from the app after going idle. In that case 3335 // we just want to leave the official config object now in the 3336 // activity and do nothing else. 3337 final int changes = oldConfig.diff(newConfig); 3338 if (changes == 0 && !r.forceNewConfig) { 3339 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3340 "Configuration no differences in " + r); 3341 return true; 3342 } 3343 3344 // If the activity isn't currently running, just leave the new 3345 // configuration and it will pick that up next time it starts. 3346 if (r.app == null || r.app.thread == null) { 3347 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3348 "Configuration doesn't matter not running " + r); 3349 r.stopFreezingScreenLocked(false); 3350 r.forceNewConfig = false; 3351 return true; 3352 } 3353 3354 // Figure out how to handle the changes between the configurations. 3355 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3356 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3357 + Integer.toHexString(changes) + ", handles=0x" 3358 + Integer.toHexString(r.info.getRealConfigChanged()) 3359 + ", newConfig=" + newConfig); 3360 } 3361 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3362 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3363 r.configChangeFlags |= changes; 3364 r.startFreezingScreenLocked(r.app, globalChanges); 3365 r.forceNewConfig = false; 3366 if (r.app == null || r.app.thread == null) { 3367 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3368 "Config is destroying non-running " + r); 3369 destroyActivityLocked(r, true, false, "config"); 3370 } else if (r.state == ActivityState.PAUSING) { 3371 // A little annoying: we are waiting for this activity to 3372 // finish pausing. Let's not do anything now, but just 3373 // flag that it needs to be restarted when done pausing. 3374 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3375 "Config is skipping already pausing " + r); 3376 r.configDestroy = true; 3377 return true; 3378 } else if (r.state == ActivityState.RESUMED) { 3379 // Try to optimize this case: the configuration is changing 3380 // and we need to restart the top, resumed activity. 3381 // Instead of doing the normal handshaking, just say 3382 // "restart!". 3383 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3384 "Config is relaunching resumed " + r); 3385 relaunchActivityLocked(r, r.configChangeFlags, true); 3386 r.configChangeFlags = 0; 3387 } else { 3388 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3389 "Config is relaunching non-resumed " + r); 3390 relaunchActivityLocked(r, r.configChangeFlags, false); 3391 r.configChangeFlags = 0; 3392 } 3393 3394 // All done... tell the caller we weren't able to keep this 3395 // activity around. 3396 return false; 3397 } 3398 3399 // Default case: the activity can handle this new configuration, so 3400 // hand it over. Note that we don't need to give it the new 3401 // configuration, since we always send configuration changes to all 3402 // process when they happen so it can just use whatever configuration 3403 // it last got. 3404 if (r.app != null && r.app.thread != null) { 3405 try { 3406 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3407 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3408 } catch (RemoteException e) { 3409 // If process died, whatever. 3410 } 3411 } 3412 r.stopFreezingScreenLocked(false); 3413 3414 return true; 3415 } 3416 3417 private boolean relaunchActivityLocked(ActivityRecord r, 3418 int changes, boolean andResume) { 3419 List<ResultInfo> results = null; 3420 List<Intent> newIntents = null; 3421 if (andResume) { 3422 results = r.results; 3423 newIntents = r.newIntents; 3424 } 3425 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3426 + " with results=" + results + " newIntents=" + newIntents 3427 + " andResume=" + andResume); 3428 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3429 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3430 r.task.taskId, r.shortComponentName); 3431 3432 r.startFreezingScreenLocked(r.app, 0); 3433 3434 mStackSupervisor.removeChildActivityContainers(r); 3435 3436 try { 3437 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3438 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3439 + r); 3440 r.forceNewConfig = false; 3441 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3442 changes, !andResume, new Configuration(mService.mConfiguration)); 3443 // Note: don't need to call pauseIfSleepingLocked() here, because 3444 // the caller will only pass in 'andResume' if this activity is 3445 // currently resumed, which implies we aren't sleeping. 3446 } catch (RemoteException e) { 3447 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3448 } 3449 3450 if (andResume) { 3451 r.results = null; 3452 r.newIntents = null; 3453 r.state = ActivityState.RESUMED; 3454 } else { 3455 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3456 r.state = ActivityState.PAUSED; 3457 } 3458 3459 return true; 3460 } 3461 3462 boolean willActivityBeVisibleLocked(IBinder token) { 3463 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3464 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3465 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3466 final ActivityRecord r = activities.get(activityNdx); 3467 if (r.appToken == token) { 3468 return true; 3469 } 3470 if (r.fullscreen && !r.finishing) { 3471 return false; 3472 } 3473 } 3474 } 3475 final ActivityRecord r = ActivityRecord.forToken(token); 3476 if (r == null) { 3477 return false; 3478 } 3479 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3480 + " would have returned true for r=" + r); 3481 return !r.finishing; 3482 } 3483 3484 void closeSystemDialogsLocked() { 3485 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3486 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3487 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3488 final ActivityRecord r = activities.get(activityNdx); 3489 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3490 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3491 } 3492 } 3493 } 3494 } 3495 3496 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3497 boolean didSomething = false; 3498 TaskRecord lastTask = null; 3499 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3500 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3501 int numActivities = activities.size(); 3502 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3503 ActivityRecord r = activities.get(activityNdx); 3504 final boolean samePackage = r.packageName.equals(name) 3505 || (name == null && r.userId == userId); 3506 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3507 && (samePackage || r.task == lastTask) 3508 && (r.app == null || evenPersistent || !r.app.persistent)) { 3509 if (!doit) { 3510 if (r.finishing) { 3511 // If this activity is just finishing, then it is not 3512 // interesting as far as something to stop. 3513 continue; 3514 } 3515 return true; 3516 } 3517 didSomething = true; 3518 Slog.i(TAG, " Force finishing activity " + r); 3519 if (samePackage) { 3520 if (r.app != null) { 3521 r.app.removed = true; 3522 } 3523 r.app = null; 3524 } 3525 lastTask = r.task; 3526 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3527 true)) { 3528 // r has been deleted from mActivities, accommodate. 3529 --numActivities; 3530 --activityNdx; 3531 } 3532 } 3533 } 3534 } 3535 return didSomething; 3536 } 3537 3538 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3539 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3540 ActivityRecord topRecord = null; 3541 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3542 final TaskRecord task = mTaskHistory.get(taskNdx); 3543 ActivityRecord r = null; 3544 ActivityRecord top = null; 3545 int numActivities = 0; 3546 int numRunning = 0; 3547 final ArrayList<ActivityRecord> activities = task.mActivities; 3548 if (activities.isEmpty()) { 3549 continue; 3550 } 3551 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3552 r = activities.get(activityNdx); 3553 3554 // Initialize state for next task if needed. 3555 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3556 top = r; 3557 numActivities = numRunning = 0; 3558 } 3559 3560 // Add 'r' into the current task. 3561 numActivities++; 3562 if (r.app != null && r.app.thread != null) { 3563 numRunning++; 3564 } 3565 3566 if (localLOGV) Slog.v( 3567 TAG, r.intent.getComponent().flattenToShortString() 3568 + ": task=" + r.task); 3569 } 3570 3571 RunningTaskInfo ci = new RunningTaskInfo(); 3572 ci.id = task.taskId; 3573 ci.baseActivity = r.intent.getComponent(); 3574 ci.topActivity = top.intent.getComponent(); 3575 ci.lastActiveTime = task.lastActiveTime; 3576 3577 if (top.thumbHolder != null) { 3578 ci.description = top.thumbHolder.lastDescription; 3579 } 3580 ci.numActivities = numActivities; 3581 ci.numRunning = numRunning; 3582 //System.out.println( 3583 // "#" + maxNum + ": " + " descr=" + ci.description); 3584 if (receiver != null) { 3585 if (localLOGV) Slog.v( 3586 TAG, "State=" + top.state + "Idle=" + top.idle 3587 + " app=" + top.app 3588 + " thr=" + (top.app != null ? top.app.thread : null)); 3589 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3590 if (top.idle && top.app != null && top.app.thread != null) { 3591 topRecord = top; 3592 } else { 3593 top.thumbnailNeeded = true; 3594 } 3595 } 3596 pending.pendingRecords.add(top); 3597 } 3598 list.add(ci); 3599 } 3600 return topRecord; 3601 } 3602 3603 public void unhandledBackLocked() { 3604 final int top = mTaskHistory.size() - 1; 3605 if (DEBUG_SWITCH) Slog.d( 3606 TAG, "Performing unhandledBack(): top activity at " + top); 3607 if (top >= 0) { 3608 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3609 int activityTop = activities.size() - 1; 3610 if (activityTop > 0) { 3611 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3612 "unhandled-back", true); 3613 } 3614 } 3615 } 3616 3617 /** 3618 * Reset local parameters because an app's activity died. 3619 * @param app The app of the activity that died. 3620 * @return result from removeHistoryRecordsForAppLocked. 3621 */ 3622 boolean handleAppDiedLocked(ProcessRecord app) { 3623 if (mPausingActivity != null && mPausingActivity.app == app) { 3624 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3625 "App died while pausing: " + mPausingActivity); 3626 mPausingActivity = null; 3627 } 3628 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3629 mLastPausedActivity = null; 3630 mLastNoHistoryActivity = null; 3631 } 3632 3633 return removeHistoryRecordsForAppLocked(app); 3634 } 3635 3636 void handleAppCrashLocked(ProcessRecord app) { 3637 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3638 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3639 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3640 final ActivityRecord r = activities.get(activityNdx); 3641 if (r.app == app) { 3642 Slog.w(TAG, " Force finishing activity " 3643 + r.intent.getComponent().flattenToShortString()); 3644 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3645 } 3646 } 3647 } 3648 } 3649 3650 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3651 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3652 boolean printed = false; 3653 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3654 final TaskRecord task = mTaskHistory.get(taskNdx); 3655 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3656 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3657 dumpClient, dumpPackage, needSep, header, 3658 " Task id #" + task.taskId); 3659 if (printed) { 3660 header = null; 3661 } 3662 } 3663 return printed; 3664 } 3665 3666 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3667 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3668 3669 if ("all".equals(name)) { 3670 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3671 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3672 } 3673 } else if ("top".equals(name)) { 3674 final int top = mTaskHistory.size() - 1; 3675 if (top >= 0) { 3676 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3677 int listTop = list.size() - 1; 3678 if (listTop >= 0) { 3679 activities.add(list.get(listTop)); 3680 } 3681 } 3682 } else { 3683 ItemMatcher matcher = new ItemMatcher(); 3684 matcher.build(name); 3685 3686 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3687 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3688 if (matcher.match(r1, r1.intent.getComponent())) { 3689 activities.add(r1); 3690 } 3691 } 3692 } 3693 } 3694 3695 return activities; 3696 } 3697 3698 ActivityRecord restartPackage(String packageName) { 3699 ActivityRecord starting = topRunningActivityLocked(null); 3700 3701 // All activities that came from the package must be 3702 // restarted as if there was a config change. 3703 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3704 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3705 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3706 final ActivityRecord a = activities.get(activityNdx); 3707 if (a.info.packageName.equals(packageName)) { 3708 a.forceNewConfig = true; 3709 if (starting != null && a == starting && a.visible) { 3710 a.startFreezingScreenLocked(starting.app, 3711 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3712 } 3713 } 3714 } 3715 } 3716 3717 return starting; 3718 } 3719 3720 void removeTask(TaskRecord task) { 3721 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3722 mWindowManager.removeTask(task.taskId); 3723 final ActivityRecord r = mResumedActivity; 3724 if (r != null && r.task == task) { 3725 mResumedActivity = null; 3726 } 3727 3728 final int taskNdx = mTaskHistory.indexOf(task); 3729 final int topTaskNdx = mTaskHistory.size() - 1; 3730 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3731 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3732 } 3733 mTaskHistory.remove(task); 3734 if (task.voiceInteractor != null) { 3735 // This task was a voice interaction, so it should not remain on the 3736 // recent tasks list. 3737 mService.mRecentTasks.remove(task); 3738 } 3739 3740 if (mTaskHistory.isEmpty()) { 3741 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3742 if (isOnHomeDisplay()) { 3743 mStackSupervisor.moveHomeStack(!isHomeStack()); 3744 } 3745 if (mStacks != null) { 3746 mStacks.remove(this); 3747 mStacks.add(0, this); 3748 } 3749 } 3750 } 3751 3752 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3753 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3754 boolean toTop) { 3755 TaskRecord task = new TaskRecord(taskId, info, intent, voiceSession, voiceInteractor); 3756 addTask(task, toTop); 3757 return task; 3758 } 3759 3760 ArrayList<TaskRecord> getAllTasks() { 3761 return new ArrayList<TaskRecord>(mTaskHistory); 3762 } 3763 3764 void addTask(final TaskRecord task, final boolean toTop) { 3765 task.stack = this; 3766 if (toTop) { 3767 insertTaskAtTop(task); 3768 } else { 3769 mTaskHistory.add(0, task); 3770 } 3771 } 3772 3773 public int getStackId() { 3774 return mStackId; 3775 } 3776 3777 @Override 3778 public String toString() { 3779 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3780 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3781 } 3782} 3783