ActivityStack.java revision a002604af0c9b1204556610537b85685d7055996
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.ResultInfo; 57import android.app.ActivityManager.RunningTaskInfo; 58import android.content.ComponentName; 59import android.content.Intent; 60import android.content.pm.ActivityInfo; 61import android.content.pm.PackageManager; 62import android.content.res.Configuration; 63import android.content.res.Resources; 64import android.graphics.Bitmap; 65import android.net.Uri; 66import android.os.Binder; 67import android.os.Bundle; 68import android.os.Debug; 69import android.os.Handler; 70import android.os.IBinder; 71import android.os.Looper; 72import android.os.Message; 73import android.os.PersistableBundle; 74import android.os.RemoteException; 75import android.os.SystemClock; 76import android.os.Trace; 77import android.os.UserHandle; 78import android.util.EventLog; 79import android.util.Slog; 80import android.view.Display; 81 82import java.io.FileDescriptor; 83import java.io.PrintWriter; 84import java.lang.ref.WeakReference; 85import java.util.ArrayList; 86import java.util.Iterator; 87import java.util.List; 88import java.util.Objects; 89 90/** 91 * State and management of a single stack of activities. 92 */ 93final class ActivityStack { 94 95 // Ticks during which we check progress while waiting for an app to launch. 96 static final int LAUNCH_TICK = 500; 97 98 // How long we wait until giving up on the last activity to pause. This 99 // is short because it directly impacts the responsiveness of starting the 100 // next activity. 101 static final int PAUSE_TIMEOUT = 500; 102 103 // How long we wait for the activity to tell us it has stopped before 104 // giving up. This is a good amount of time because we really need this 105 // from the application in order to get its saved state. 106 static final int STOP_TIMEOUT = 10*1000; 107 108 // How long we wait until giving up on an activity telling us it has 109 // finished destroying itself. 110 static final int DESTROY_TIMEOUT = 10*1000; 111 112 // How long until we reset a task when the user returns to it. Currently 113 // disabled. 114 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 115 116 // How long between activity launches that we consider safe to not warn 117 // the user about an unexpected activity being launched on top. 118 static final long START_WARN_TIME = 5*1000; 119 120 // Set to false to disable the preview that is shown while a new activity 121 // is being started. 122 static final boolean SHOW_APP_STARTING_PREVIEW = true; 123 124 // How long to wait for all background Activities to redraw following a call to 125 // convertToTranslucent(). 126 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 127 128 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 129 130 enum ActivityState { 131 INITIALIZING, 132 RESUMED, 133 PAUSING, 134 PAUSED, 135 STOPPING, 136 STOPPED, 137 FINISHING, 138 DESTROYING, 139 DESTROYED 140 } 141 142 final ActivityManagerService mService; 143 final WindowManagerService mWindowManager; 144 145 /** 146 * The back history of all previous (and possibly still 147 * running) activities. It contains #TaskRecord objects. 148 */ 149 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 150 151 /** 152 * Used for validating app tokens with window manager. 153 */ 154 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 155 156 /** 157 * List of running activities, sorted by recent usage. 158 * The first entry in the list is the least recently used. 159 * It contains HistoryRecord objects. 160 */ 161 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 162 163 /** 164 * Animations that for the current transition have requested not to 165 * be considered for the transition animation. 166 */ 167 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 168 169 /** 170 * When we are in the process of pausing an activity, before starting the 171 * next one, this variable holds the activity that is currently being paused. 172 */ 173 ActivityRecord mPausingActivity = null; 174 175 /** 176 * This is the last activity that we put into the paused state. This is 177 * used to determine if we need to do an activity transition while sleeping, 178 * when we normally hold the top activity paused. 179 */ 180 ActivityRecord mLastPausedActivity = null; 181 182 /** 183 * Activities that specify No History must be removed once the user navigates away from them. 184 * If the device goes to sleep with such an activity in the paused state then we save it here 185 * and finish it later if another activity replaces it on wakeup. 186 */ 187 ActivityRecord mLastNoHistoryActivity = null; 188 189 /** 190 * Current activity that is resumed, or null if there is none. 191 */ 192 ActivityRecord mResumedActivity = null; 193 194 /** 195 * This is the last activity that has been started. It is only used to 196 * identify when multiple activities are started at once so that the user 197 * can be warned they may not be in the activity they think they are. 198 */ 199 ActivityRecord mLastStartedActivity = null; 200 201 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 202 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 203 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 204 // Activity in mTranslucentActivityWaiting is notified via 205 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 206 // background activity being drawn then the same call will be made with a true value. 207 ActivityRecord mTranslucentActivityWaiting = null; 208 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 209 new ArrayList<ActivityRecord>(); 210 211 /** 212 * Set when we know we are going to be calling updateConfiguration() 213 * soon, so want to skip intermediate config checks. 214 */ 215 boolean mConfigWillChange; 216 217 long mLaunchStartTime = 0; 218 long mFullyDrawnStartTime = 0; 219 220 /** 221 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 222 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 223 */ 224 private ActivityRecord mLastScreenshotActivity = null; 225 private Bitmap mLastScreenshotBitmap = null; 226 227 int mThumbnailWidth = -1; 228 int mThumbnailHeight = -1; 229 230 int mCurrentUser; 231 232 final int mStackId; 233 final ActivityContainer mActivityContainer; 234 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 235 ArrayList<ActivityStack> mStacks; 236 /** The attached Display's unique identifier, or -1 if detached */ 237 int mDisplayId; 238 239 /** Run all ActivityStacks through this */ 240 final ActivityStackSupervisor mStackSupervisor; 241 242 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 243 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 244 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 245 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 246 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 247 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 248 249 static class ScheduleDestroyArgs { 250 final ProcessRecord mOwner; 251 final boolean mOomAdj; 252 final String mReason; 253 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 254 mOwner = owner; 255 mOomAdj = oomAdj; 256 mReason = reason; 257 } 258 } 259 260 final Handler mHandler; 261 262 final class ActivityStackHandler extends Handler { 263 //public Handler() { 264 // if (localLOGV) Slog.v(TAG, "Handler started!"); 265 //} 266 ActivityStackHandler(Looper looper) { 267 super(looper); 268 } 269 270 @Override 271 public void handleMessage(Message msg) { 272 switch (msg.what) { 273 case PAUSE_TIMEOUT_MSG: { 274 ActivityRecord r = (ActivityRecord)msg.obj; 275 // We don't at this point know if the activity is fullscreen, 276 // so we need to be conservative and assume it isn't. 277 Slog.w(TAG, "Activity pause timeout for " + r); 278 synchronized (mService) { 279 if (r.app != null) { 280 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 281 } 282 activityPausedLocked(r.appToken, true, r.persistentState); 283 } 284 } break; 285 case LAUNCH_TICK_MSG: { 286 ActivityRecord r = (ActivityRecord)msg.obj; 287 synchronized (mService) { 288 if (r.continueLaunchTickingLocked()) { 289 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 290 } 291 } 292 } break; 293 case DESTROY_TIMEOUT_MSG: { 294 ActivityRecord r = (ActivityRecord)msg.obj; 295 // We don't at this point know if the activity is fullscreen, 296 // so we need to be conservative and assume it isn't. 297 Slog.w(TAG, "Activity destroy timeout for " + r); 298 synchronized (mService) { 299 activityDestroyedLocked(r != null ? r.appToken : null); 300 } 301 } break; 302 case STOP_TIMEOUT_MSG: { 303 ActivityRecord r = (ActivityRecord)msg.obj; 304 // We don't at this point know if the activity is fullscreen, 305 // so we need to be conservative and assume it isn't. 306 Slog.w(TAG, "Activity stop timeout for " + r); 307 synchronized (mService) { 308 if (r.isInHistory()) { 309 activityStoppedLocked(r, null, null, null); 310 } 311 } 312 } break; 313 case DESTROY_ACTIVITIES_MSG: { 314 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 315 synchronized (mService) { 316 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 317 } 318 } break; 319 case TRANSLUCENT_TIMEOUT_MSG: { 320 synchronized (mService) { 321 notifyActivityDrawnLocked(null); 322 } 323 } break; 324 } 325 } 326 } 327 328 int numActivities() { 329 int count = 0; 330 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 331 count += mTaskHistory.get(taskNdx).mActivities.size(); 332 } 333 return count; 334 } 335 336 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 337 mActivityContainer = activityContainer; 338 mStackSupervisor = activityContainer.getOuter(); 339 mService = mStackSupervisor.mService; 340 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 341 mWindowManager = mService.mWindowManager; 342 mStackId = activityContainer.mStackId; 343 mCurrentUser = mService.mCurrentUserId; 344 } 345 346 /** 347 * Checks whether the userid is a profile of the current user. 348 */ 349 private boolean isCurrentProfileLocked(int userId) { 350 if (userId == mCurrentUser) return true; 351 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 352 if (mService.mCurrentProfileIds[i] == userId) return true; 353 } 354 return false; 355 } 356 357 boolean okToShowLocked(ActivityRecord r) { 358 return isCurrentProfileLocked(r.userId) 359 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 360 } 361 362 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 363 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 364 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 365 if (r != null) { 366 return r; 367 } 368 } 369 return null; 370 } 371 372 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 373 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 374 final TaskRecord task = mTaskHistory.get(taskNdx); 375 final ArrayList<ActivityRecord> activities = task.mActivities; 376 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 377 ActivityRecord r = activities.get(activityNdx); 378 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 379 return r; 380 } 381 } 382 } 383 return null; 384 } 385 386 /** 387 * This is a simplified version of topRunningActivityLocked that provides a number of 388 * optional skip-over modes. It is intended for use with the ActivityController hook only. 389 * 390 * @param token If non-null, any history records matching this token will be skipped. 391 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 392 * 393 * @return Returns the HistoryRecord of the next activity on the stack. 394 */ 395 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 396 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 397 TaskRecord task = mTaskHistory.get(taskNdx); 398 if (task.taskId == taskId) { 399 continue; 400 } 401 ArrayList<ActivityRecord> activities = task.mActivities; 402 for (int i = activities.size() - 1; i >= 0; --i) { 403 final ActivityRecord r = activities.get(i); 404 // Note: the taskId check depends on real taskId fields being non-zero 405 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 406 return r; 407 } 408 } 409 } 410 return null; 411 } 412 413 final ActivityRecord topActivity() { 414 // Iterate to find the first non-empty task stack. Note that this code can 415 // be simplified once we stop storing tasks with empty mActivities lists. 416 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 417 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 418 final int topActivityNdx = activities.size() - 1; 419 if (topActivityNdx >= 0) { 420 return activities.get(topActivityNdx); 421 } 422 } 423 return null; 424 } 425 426 final TaskRecord topTask() { 427 final int size = mTaskHistory.size(); 428 if (size > 0) { 429 return mTaskHistory.get(size - 1); 430 } 431 return null; 432 } 433 434 TaskRecord taskForIdLocked(int id) { 435 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 436 final TaskRecord task = mTaskHistory.get(taskNdx); 437 if (task.taskId == id) { 438 return task; 439 } 440 } 441 return null; 442 } 443 444 ActivityRecord isInStackLocked(IBinder token) { 445 final ActivityRecord r = ActivityRecord.forToken(token); 446 if (r != null) { 447 final TaskRecord task = r.task; 448 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 449 if (task.stack != this) Slog.w(TAG, 450 "Illegal state! task does not point to stack it is in."); 451 return r; 452 } 453 } 454 return null; 455 } 456 457 final boolean updateLRUListLocked(ActivityRecord r) { 458 final boolean hadit = mLRUActivities.remove(r); 459 mLRUActivities.add(r); 460 return hadit; 461 } 462 463 final boolean isHomeStack() { 464 return mStackId == HOME_STACK_ID; 465 } 466 467 final boolean isOnHomeDisplay() { 468 return isAttached() && 469 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 470 } 471 472 final void moveToFront() { 473 if (isAttached()) { 474 if (isOnHomeDisplay()) { 475 mStackSupervisor.moveHomeStack(isHomeStack()); 476 } 477 mStacks.remove(this); 478 mStacks.add(this); 479 } 480 } 481 482 final boolean isAttached() { 483 return mStacks != null; 484 } 485 486 /** 487 * Returns the top activity in any existing task matching the given 488 * Intent. Returns null if no such task is found. 489 */ 490 ActivityRecord findTaskLocked(ActivityRecord target) { 491 Intent intent = target.intent; 492 ActivityInfo info = target.info; 493 ComponentName cls = intent.getComponent(); 494 if (info.targetActivity != null) { 495 cls = new ComponentName(info.packageName, info.targetActivity); 496 } 497 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 498 boolean isDocument = intent != null & intent.isDocument(); 499 // If documentData is non-null then it must match the existing task data. 500 Uri documentData = isDocument ? intent.getData() : null; 501 502 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 503 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 504 final TaskRecord task = mTaskHistory.get(taskNdx); 505 if (task.voiceSession != null) { 506 // We never match voice sessions; those always run independently. 507 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 508 continue; 509 } 510 if (task.userId != userId) { 511 // Looking for a different task. 512 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 513 continue; 514 } 515 final ActivityRecord r = task.getTopActivity(); 516 if (r == null || r.finishing || r.userId != userId || 517 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 518 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 519 continue; 520 } 521 522 final Intent taskIntent = task.intent; 523 final Intent affinityIntent = task.affinityIntent; 524 final boolean taskIsDocument; 525 final Uri taskDocumentData; 526 if (taskIntent != null && taskIntent.isDocument()) { 527 taskIsDocument = true; 528 taskDocumentData = taskIntent.getData(); 529 } else if (affinityIntent != null && affinityIntent.isDocument()) { 530 taskIsDocument = true; 531 taskDocumentData = affinityIntent.getData(); 532 } else { 533 taskIsDocument = false; 534 taskDocumentData = null; 535 } 536 537 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 538 + taskIntent.getComponent().flattenToShortString() 539 + "/aff=" + r.task.affinity + " to new cls=" 540 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 541 if (!isDocument && !taskIsDocument && task.affinity != null) { 542 if (task.affinity.equals(target.taskAffinity)) { 543 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 544 return r; 545 } 546 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 547 Objects.equals(documentData, taskDocumentData)) { 548 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 549 //dump(); 550 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 551 + r.intent); 552 return r; 553 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 554 Objects.equals(documentData, taskDocumentData)) { 555 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 556 //dump(); 557 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 558 + r.intent); 559 return r; 560 } else if (DEBUG_TASKS) { 561 Slog.d(TAG, "Not a match: " + task); 562 } 563 } 564 565 return null; 566 } 567 568 /** 569 * Returns the first activity (starting from the top of the stack) that 570 * is the same as the given activity. Returns null if no such activity 571 * is found. 572 */ 573 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 574 ComponentName cls = intent.getComponent(); 575 if (info.targetActivity != null) { 576 cls = new ComponentName(info.packageName, info.targetActivity); 577 } 578 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 579 580 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 581 TaskRecord task = mTaskHistory.get(taskNdx); 582 if (!isCurrentProfileLocked(task.userId)) { 583 return null; 584 } 585 final ArrayList<ActivityRecord> activities = task.mActivities; 586 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 587 ActivityRecord r = activities.get(activityNdx); 588 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 589 //Slog.i(TAG, "Found matching class!"); 590 //dump(); 591 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 592 return r; 593 } 594 } 595 } 596 597 return null; 598 } 599 600 /* 601 * Move the activities around in the stack to bring a user to the foreground. 602 */ 603 final void switchUserLocked(int userId) { 604 if (mCurrentUser == userId) { 605 return; 606 } 607 mCurrentUser = userId; 608 609 // Move userId's tasks to the top. 610 int index = mTaskHistory.size(); 611 for (int i = 0; i < index; ) { 612 TaskRecord task = mTaskHistory.get(i); 613 if (isCurrentProfileLocked(task.userId)) { 614 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 615 " moving " + task + " to top"); 616 mTaskHistory.remove(i); 617 mTaskHistory.add(task); 618 --index; 619 // Use same value for i. 620 } else { 621 ++i; 622 } 623 } 624 if (VALIDATE_TOKENS) { 625 validateAppTokensLocked(); 626 } 627 } 628 629 void minimalResumeActivityLocked(ActivityRecord r) { 630 r.state = ActivityState.RESUMED; 631 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 632 + " (starting new instance)"); 633 r.stopped = false; 634 mResumedActivity = r; 635 r.task.touchActiveTime(); 636 mService.addRecentTaskLocked(r.task); 637 completeResumeLocked(r); 638 mStackSupervisor.checkReadyForSleepLocked(); 639 setLaunchTime(r); 640 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 641 } 642 643 private void startLaunchTraces() { 644 if (mFullyDrawnStartTime != 0) { 645 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 646 } 647 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 648 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 649 } 650 651 private void stopFullyDrawnTraceIfNeeded() { 652 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 653 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 654 mFullyDrawnStartTime = 0; 655 } 656 } 657 658 void setLaunchTime(ActivityRecord r) { 659 if (r.displayStartTime == 0) { 660 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 661 if (mLaunchStartTime == 0) { 662 startLaunchTraces(); 663 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 664 } 665 } else if (mLaunchStartTime == 0) { 666 startLaunchTraces(); 667 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 668 } 669 } 670 671 void clearLaunchTime(ActivityRecord r) { 672 // Make sure that there is no activity waiting for this to launch. 673 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 674 r.displayStartTime = r.fullyDrawnStartTime = 0; 675 } else { 676 mStackSupervisor.removeTimeoutsForActivityLocked(r); 677 mStackSupervisor.scheduleIdleTimeoutLocked(r); 678 } 679 } 680 681 void awakeFromSleepingLocked() { 682 // Ensure activities are no longer sleeping. 683 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 684 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 685 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 686 activities.get(activityNdx).setSleeping(false); 687 } 688 } 689 } 690 691 /** 692 * @return true if something must be done before going to sleep. 693 */ 694 boolean checkReadyForSleepLocked() { 695 if (mResumedActivity != null) { 696 // Still have something resumed; can't sleep until it is paused. 697 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 698 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 699 startPausingLocked(false, true); 700 return true; 701 } 702 if (mPausingActivity != null) { 703 // Still waiting for something to pause; can't sleep yet. 704 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 705 return true; 706 } 707 708 return false; 709 } 710 711 void goToSleep() { 712 ensureActivitiesVisibleLocked(null, 0); 713 714 // Make sure any stopped but visible activities are now sleeping. 715 // This ensures that the activity's onStop() is called. 716 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 717 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 718 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 719 final ActivityRecord r = activities.get(activityNdx); 720 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 721 r.setSleeping(true); 722 } 723 } 724 } 725 } 726 727 public final Bitmap screenshotActivities(ActivityRecord who) { 728 if (who.noDisplay) { 729 return null; 730 } 731 732 TaskRecord tr = who.task; 733 if (mService.getMostRecentTask() != tr && tr.intent != null && 734 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 735 // If this task is being excluded from recents, we don't want to take 736 // the expense of capturing a thumbnail, since we will never show it. 737 return null; 738 } 739 740 Resources res = mService.mContext.getResources(); 741 int w = mThumbnailWidth; 742 int h = mThumbnailHeight; 743 if (w < 0) { 744 Configuration config = res.getConfiguration(); 745 boolean useAlternateRecents = (config.smallestScreenWidthDp < 600); 746 if (useAlternateRecents) { 747 mThumbnailWidth = w = 748 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 749 mThumbnailHeight = h = 750 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 751 } else { 752 mThumbnailWidth = w = 753 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 754 mThumbnailHeight = h = 755 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 756 } 757 } 758 759 if (w > 0) { 760 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 761 || mLastScreenshotActivity.state == ActivityState.RESUMED 762 || mLastScreenshotBitmap.getWidth() != w 763 || mLastScreenshotBitmap.getHeight() != h) { 764 mLastScreenshotActivity = who; 765 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 766 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 767 } 768 if (mLastScreenshotBitmap != null) { 769 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 770 } 771 } 772 return null; 773 } 774 775 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 776 if (mPausingActivity != null) { 777 Slog.e(TAG, "Trying to pause when pause is already pending for " 778 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 779 } 780 ActivityRecord prev = mResumedActivity; 781 if (prev == null) { 782 Slog.e(TAG, "Trying to pause when nothing is resumed", 783 new RuntimeException("here").fillInStackTrace()); 784 mStackSupervisor.resumeTopActivitiesLocked(); 785 return; 786 } 787 788 if (mActivityContainer.mParentActivity == null) { 789 // Top level stack, not a child. Look for child stacks. 790 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 791 } 792 793 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 794 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 795 mResumedActivity = null; 796 mPausingActivity = prev; 797 mLastPausedActivity = prev; 798 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 799 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 800 prev.state = ActivityState.PAUSING; 801 prev.task.touchActiveTime(); 802 clearLaunchTime(prev); 803 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 804 if (next == null || next.noDisplay || next.task != prev.task) { 805 prev.updateThumbnail(screenshotActivities(prev), null); 806 } 807 stopFullyDrawnTraceIfNeeded(); 808 809 mService.updateCpuStats(); 810 811 if (prev.app != null && prev.app.thread != null) { 812 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 813 try { 814 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 815 prev.userId, System.identityHashCode(prev), 816 prev.shortComponentName); 817 mService.updateUsageStats(prev, false); 818 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 819 userLeaving, prev.configChangeFlags); 820 } catch (Exception e) { 821 // Ignore exception, if process died other code will cleanup. 822 Slog.w(TAG, "Exception thrown during pause", e); 823 mPausingActivity = null; 824 mLastPausedActivity = null; 825 mLastNoHistoryActivity = null; 826 } 827 } else { 828 mPausingActivity = null; 829 mLastPausedActivity = null; 830 mLastNoHistoryActivity = null; 831 } 832 833 // If we are not going to sleep, we want to ensure the device is 834 // awake until the next activity is started. 835 if (!mService.isSleepingOrShuttingDown()) { 836 mStackSupervisor.acquireLaunchWakelock(); 837 } 838 839 if (mPausingActivity != null) { 840 // Have the window manager pause its key dispatching until the new 841 // activity has started. If we're pausing the activity just because 842 // the screen is being turned off and the UI is sleeping, don't interrupt 843 // key dispatch; the same activity will pick it up again on wakeup. 844 if (!uiSleeping) { 845 prev.pauseKeyDispatchingLocked(); 846 } else { 847 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 848 } 849 850 // Schedule a pause timeout in case the app doesn't respond. 851 // We don't give it much time because this directly impacts the 852 // responsiveness seen by the user. 853 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 854 msg.obj = prev; 855 prev.pauseTime = SystemClock.uptimeMillis(); 856 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 857 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 858 } else { 859 // This activity failed to schedule the 860 // pause, so just treat it as being paused now. 861 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 862 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 863 } 864 } 865 866 final void activityPausedLocked(IBinder token, boolean timeout, 867 PersistableBundle persistentState) { 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 r.persistentState = persistentState; 875 if (mPausingActivity == r) { 876 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 877 + (timeout ? " (due to timeout)" : " (pause complete)")); 878 r.state = ActivityState.PAUSED; 879 completePauseLocked(); 880 } else { 881 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 882 r.userId, System.identityHashCode(r), r.shortComponentName, 883 mPausingActivity != null 884 ? mPausingActivity.shortComponentName : "(none)"); 885 } 886 } 887 } 888 889 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 890 PersistableBundle persistentState, CharSequence description) { 891 if (r.state != ActivityState.STOPPING) { 892 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 893 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 894 return; 895 } 896 r.persistentState = persistentState; 897 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 898 if (icicle != null) { 899 // If icicle is null, this is happening due to a timeout, so we 900 // haven't really saved the state. 901 r.icicle = icicle; 902 r.haveState = true; 903 r.launchCount = 0; 904 r.updateThumbnail(null, description); 905 } 906 if (!r.stopped) { 907 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 908 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 909 r.stopped = true; 910 r.state = ActivityState.STOPPED; 911 if (r.finishing) { 912 r.clearOptionsLocked(); 913 } else { 914 if (r.configDestroy) { 915 destroyActivityLocked(r, true, false, "stop-config"); 916 mStackSupervisor.resumeTopActivitiesLocked(); 917 } else { 918 mStackSupervisor.updatePreviousProcessLocked(r); 919 } 920 } 921 } 922 } 923 924 private void completePauseLocked() { 925 ActivityRecord prev = mPausingActivity; 926 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 927 928 if (prev != null) { 929 if (prev.finishing) { 930 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 931 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 932 } else if (prev.app != null) { 933 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 934 if (prev.waitingVisible) { 935 prev.waitingVisible = false; 936 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 937 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 938 TAG, "Complete pause, no longer waiting: " + prev); 939 } 940 if (prev.configDestroy) { 941 // The previous is being paused because the configuration 942 // is changing, which means it is actually stopping... 943 // To juggle the fact that we are also starting a new 944 // instance right now, we need to first completely stop 945 // the current instance before starting the new one. 946 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 947 destroyActivityLocked(prev, true, false, "pause-config"); 948 } else { 949 mStackSupervisor.mStoppingActivities.add(prev); 950 if (mStackSupervisor.mStoppingActivities.size() > 3 || 951 prev.frontOfTask && mTaskHistory.size() <= 1) { 952 // If we already have a few activities waiting to stop, 953 // then give up on things going idle and start clearing 954 // them out. Or if r is the last of activity of the last task the stack 955 // will be empty and must be cleared immediately. 956 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 957 mStackSupervisor.scheduleIdleLocked(); 958 } else { 959 mStackSupervisor.checkReadyForSleepLocked(); 960 } 961 } 962 } else { 963 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 964 prev = null; 965 } 966 mPausingActivity = null; 967 } 968 969 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 970 if (!mService.isSleepingOrShuttingDown()) { 971 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 972 } else { 973 mStackSupervisor.checkReadyForSleepLocked(); 974 ActivityRecord top = topStack.topRunningActivityLocked(null); 975 if (top == null || (prev != null && top != prev)) { 976 // If there are no more activities available to run, 977 // do resume anyway to start something. Also if the top 978 // activity on the stack is not the just paused activity, 979 // we need to go ahead and resume it to ensure we complete 980 // an in-flight app switch. 981 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 982 } 983 } 984 985 if (prev != null) { 986 prev.resumeKeyDispatchingLocked(); 987 988 if (prev.app != null && prev.cpuTimeAtResume > 0 989 && mService.mBatteryStatsService.isOnBattery()) { 990 long diff; 991 synchronized (mService.mProcessCpuThread) { 992 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 993 - prev.cpuTimeAtResume; 994 } 995 if (diff > 0) { 996 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 997 synchronized (bsi) { 998 BatteryStatsImpl.Uid.Proc ps = 999 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1000 prev.info.packageName); 1001 if (ps != null) { 1002 ps.addForegroundTimeLocked(diff); 1003 } 1004 } 1005 } 1006 } 1007 prev.cpuTimeAtResume = 0; // reset it 1008 } 1009 } 1010 1011 /** 1012 * Once we know that we have asked an application to put an activity in 1013 * the resumed state (either by launching it or explicitly telling it), 1014 * this function updates the rest of our state to match that fact. 1015 */ 1016 private void completeResumeLocked(ActivityRecord next) { 1017 next.idle = false; 1018 next.results = null; 1019 next.newIntents = null; 1020 if (next.nowVisible) { 1021 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1022 mStackSupervisor.dismissKeyguard(); 1023 } 1024 1025 // schedule an idle timeout in case the app doesn't do it for us. 1026 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1027 1028 mStackSupervisor.reportResumedActivityLocked(next); 1029 1030 next.resumeKeyDispatchingLocked(); 1031 mNoAnimActivities.clear(); 1032 1033 // Mark the point when the activity is resuming 1034 // TODO: To be more accurate, the mark should be before the onCreate, 1035 // not after the onResume. But for subsequent starts, onResume is fine. 1036 if (next.app != null) { 1037 synchronized (mService.mProcessCpuThread) { 1038 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1039 } 1040 } else { 1041 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1042 } 1043 } 1044 1045 /** 1046 * Determine if home should be visible below the passed record. 1047 * @param record activity we are querying for. 1048 * @return true if home is visible below the passed activity, false otherwise. 1049 */ 1050 boolean isActivityOverHome(ActivityRecord record) { 1051 // Start at record and go down, look for either home or a visible fullscreen activity. 1052 final TaskRecord recordTask = record.task; 1053 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1054 TaskRecord task = mTaskHistory.get(taskNdx); 1055 final ArrayList<ActivityRecord> activities = task.mActivities; 1056 final int startNdx = 1057 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1058 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1059 final ActivityRecord r = activities.get(activityNdx); 1060 if (r.isHomeActivity()) { 1061 return true; 1062 } 1063 if (!r.finishing && r.fullscreen) { 1064 // Passed activity is over a fullscreen activity. 1065 return false; 1066 } 1067 } 1068 if (task.mOnTopOfHome) { 1069 // Got to the bottom of a task on top of home without finding a visible fullscreen 1070 // activity. Home is visible. 1071 return true; 1072 } 1073 } 1074 // Got to the bottom of this stack and still don't know. If this is over the home stack 1075 // then record is over home. May not work if we ever get more than two layers. 1076 return mStackSupervisor.isFrontStack(this); 1077 } 1078 1079 private void setVisibile(ActivityRecord r, boolean visible) { 1080 r.visible = visible; 1081 mWindowManager.setAppVisibility(r.appToken, visible); 1082 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1083 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1084 ActivityContainer container = containers.get(containerNdx); 1085 container.setVisible(visible); 1086 } 1087 } 1088 1089 /** 1090 * Version of ensureActivitiesVisible that can easily be called anywhere. 1091 */ 1092 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1093 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1094 } 1095 1096 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1097 boolean forceHomeShown) { 1098 ActivityRecord r = topRunningActivityLocked(null); 1099 return r != null && 1100 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1101 } 1102 1103 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1104 // If so, this stack is hidden, otherwise it is visible. 1105 private boolean isStackVisible() { 1106 if (!isAttached()) { 1107 return false; 1108 } 1109 1110 if (mStackSupervisor.isFrontStack(this)) { 1111 return true; 1112 } 1113 1114 // Start at the task above this one and go up, looking for a visible 1115 // fullscreen activity, or a translucent activity that requested the 1116 // wallpaper to be shown behind it. 1117 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1118 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1119 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1120 final ArrayList<ActivityRecord> activities = tasks.get(taskNdx).mActivities; 1121 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1122 final ActivityRecord r = activities.get(activityNdx); 1123 if (!r.finishing && r.visible && r.fullscreen) { 1124 return false; 1125 } 1126 } 1127 } 1128 } 1129 1130 return true; 1131 } 1132 1133 /** 1134 * Make sure that all activities that need to be visible (that is, they 1135 * currently can be seen by the user) actually are. 1136 */ 1137 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1138 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1139 if (DEBUG_VISBILITY) Slog.v( 1140 TAG, "ensureActivitiesVisible behind " + top 1141 + " configChanges=0x" + Integer.toHexString(configChanges)); 1142 1143 if (mTranslucentActivityWaiting != top) { 1144 mUndrawnActivitiesBelowTopTranslucent.clear(); 1145 if (mTranslucentActivityWaiting != null) { 1146 // Call the callback with a timeout indication. 1147 notifyActivityDrawnLocked(null); 1148 mTranslucentActivityWaiting = null; 1149 } 1150 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1151 } 1152 1153 // If the top activity is not fullscreen, then we need to 1154 // make sure any activities under it are now visible. 1155 boolean aboveTop = true; 1156 boolean showHomeBehindStack = false; 1157 boolean behindFullscreen = !isStackVisible(); 1158 1159 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1160 final TaskRecord task = mTaskHistory.get(taskNdx); 1161 final ArrayList<ActivityRecord> activities = task.mActivities; 1162 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1163 final ActivityRecord r = activities.get(activityNdx); 1164 if (r.finishing) { 1165 continue; 1166 } 1167 if (aboveTop && r != top) { 1168 continue; 1169 } 1170 aboveTop = false; 1171 if (!behindFullscreen) { 1172 if (DEBUG_VISBILITY) Slog.v( 1173 TAG, "Make visible? " + r + " finishing=" + r.finishing 1174 + " state=" + r.state); 1175 1176 final boolean doThisProcess = onlyThisProcess == null 1177 || onlyThisProcess.equals(r.processName); 1178 1179 // First: if this is not the current activity being started, make 1180 // sure it matches the current configuration. 1181 if (r != starting && doThisProcess) { 1182 ensureActivityConfigurationLocked(r, 0); 1183 } 1184 1185 if (r.app == null || r.app.thread == null) { 1186 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1187 // This activity needs to be visible, but isn't even 1188 // running... get it started, but don't resume it 1189 // at this point. 1190 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1191 if (r != starting) { 1192 r.startFreezingScreenLocked(r.app, configChanges); 1193 } 1194 if (!r.visible) { 1195 if (DEBUG_VISBILITY) Slog.v( 1196 TAG, "Starting and making visible: " + r); 1197 setVisibile(r, true); 1198 } 1199 if (r != starting) { 1200 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1201 } 1202 } 1203 1204 } else if (r.visible) { 1205 // If this activity is already visible, then there is nothing 1206 // else to do here. 1207 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1208 r.stopFreezingScreenLocked(false); 1209 1210 } else if (onlyThisProcess == null) { 1211 // This activity is not currently visible, but is running. 1212 // Tell it to become visible. 1213 r.visible = true; 1214 if (r.state != ActivityState.RESUMED && r != starting) { 1215 // If this activity is paused, tell it 1216 // to now show its window. 1217 if (DEBUG_VISBILITY) Slog.v( 1218 TAG, "Making visible and scheduling visibility: " + r); 1219 try { 1220 if (mTranslucentActivityWaiting != null) { 1221 mUndrawnActivitiesBelowTopTranslucent.add(r); 1222 } 1223 setVisibile(r, true); 1224 r.sleeping = false; 1225 r.app.pendingUiClean = true; 1226 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1227 r.stopFreezingScreenLocked(false); 1228 } catch (Exception e) { 1229 // Just skip on any failure; we'll make it 1230 // visible when it next restarts. 1231 Slog.w(TAG, "Exception thrown making visibile: " 1232 + r.intent.getComponent(), e); 1233 } 1234 } 1235 } 1236 1237 // Aggregate current change flags. 1238 configChanges |= r.configChangeFlags; 1239 1240 if (r.fullscreen) { 1241 // At this point, nothing else needs to be shown 1242 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1243 behindFullscreen = true; 1244 showHomeBehindStack = false; 1245 } else if (isActivityOverHome(r)) { 1246 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1247 showHomeBehindStack = true; 1248 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1249 } 1250 } else { 1251 if (DEBUG_VISBILITY) Slog.v( 1252 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1253 + " state=" + r.state 1254 + " behindFullscreen=" + behindFullscreen); 1255 // Now for any activities that aren't visible to the user, make 1256 // sure they no longer are keeping the screen frozen. 1257 if (r.visible) { 1258 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1259 try { 1260 setVisibile(r, false); 1261 switch (r.state) { 1262 case STOPPING: 1263 case STOPPED: 1264 if (r.app != null && r.app.thread != null) { 1265 if (DEBUG_VISBILITY) Slog.v( 1266 TAG, "Scheduling invisibility: " + r); 1267 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1268 } 1269 break; 1270 1271 case INITIALIZING: 1272 case RESUMED: 1273 case PAUSING: 1274 case PAUSED: 1275 // This case created for transitioning activities from 1276 // translucent to opaque {@link Activity#convertToOpaque}. 1277 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1278 mStackSupervisor.mStoppingActivities.add(r); 1279 } 1280 mStackSupervisor.scheduleIdleLocked(); 1281 break; 1282 1283 default: 1284 break; 1285 } 1286 } catch (Exception e) { 1287 // Just skip on any failure; we'll make it 1288 // visible when it next restarts. 1289 Slog.w(TAG, "Exception thrown making hidden: " 1290 + r.intent.getComponent(), e); 1291 } 1292 } else { 1293 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1294 } 1295 } 1296 } 1297 } 1298 return showHomeBehindStack; 1299 } 1300 1301 void convertToTranslucent(ActivityRecord r) { 1302 mTranslucentActivityWaiting = r; 1303 mUndrawnActivitiesBelowTopTranslucent.clear(); 1304 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1305 } 1306 1307 /** 1308 * Called as activities below the top translucent activity are redrawn. When the last one is 1309 * redrawn notify the top activity by calling 1310 * {@link Activity#onTranslucentConversionComplete}. 1311 * 1312 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1313 * occurred and the activity will be notified immediately. 1314 */ 1315 void notifyActivityDrawnLocked(ActivityRecord r) { 1316 mActivityContainer.setDrawn(); 1317 if ((r == null) 1318 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1319 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1320 // The last undrawn activity below the top has just been drawn. If there is an 1321 // opaque activity at the top, notify it that it can become translucent safely now. 1322 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1323 mTranslucentActivityWaiting = null; 1324 mUndrawnActivitiesBelowTopTranslucent.clear(); 1325 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1326 1327 if (waitingActivity != null) { 1328 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1329 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1330 try { 1331 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1332 waitingActivity.appToken, r != null); 1333 } catch (RemoteException e) { 1334 } 1335 } 1336 } 1337 } 1338 } 1339 1340 /** If any activities below the top running one are in the INITIALIZING state and they have a 1341 * starting window displayed then remove that starting window. It is possible that the activity 1342 * in this state will never resumed in which case that starting window will be orphaned. */ 1343 void cancelInitializingActivities() { 1344 final ActivityRecord topActivity = topRunningActivityLocked(null); 1345 boolean aboveTop = true; 1346 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1347 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1348 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1349 final ActivityRecord r = activities.get(activityNdx); 1350 if (aboveTop) { 1351 if (r == topActivity) { 1352 aboveTop = false; 1353 } 1354 continue; 1355 } 1356 1357 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1358 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1359 r.mStartingWindowShown = false; 1360 mWindowManager.removeAppStartingWindow(r.appToken); 1361 } 1362 } 1363 } 1364 } 1365 1366 /** 1367 * Ensure that the top activity in the stack is resumed. 1368 * 1369 * @param prev The previously resumed activity, for when in the process 1370 * of pausing; can be null to call from elsewhere. 1371 * 1372 * @return Returns true if something is being resumed, or false if 1373 * nothing happened. 1374 */ 1375 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1376 return resumeTopActivityLocked(prev, null); 1377 } 1378 1379 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1380 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1381 1382 ActivityRecord parent = mActivityContainer.mParentActivity; 1383 if ((parent != null && parent.state != ActivityState.RESUMED) || 1384 !mActivityContainer.isAttached()) { 1385 // Do not resume this stack if its parent is not resumed. 1386 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1387 return false; 1388 } 1389 1390 cancelInitializingActivities(); 1391 1392 // Find the first activity that is not finishing. 1393 ActivityRecord next = topRunningActivityLocked(null); 1394 1395 // Remember how we'll process this pause/resume situation, and ensure 1396 // that the state is reset however we wind up proceeding. 1397 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1398 mStackSupervisor.mUserLeaving = false; 1399 1400 if (next == null) { 1401 // There are no more activities! Let's just start up the 1402 // Launcher... 1403 ActivityOptions.abort(options); 1404 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1405 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1406 // Only resume home if on home display 1407 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1408 } 1409 1410 next.delayedResume = false; 1411 1412 // If the top activity is the resumed one, nothing to do. 1413 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1414 mStackSupervisor.allResumedActivitiesComplete()) { 1415 // Make sure we have executed any pending transitions, since there 1416 // should be nothing left to do at this point. 1417 mWindowManager.executeAppTransition(); 1418 mNoAnimActivities.clear(); 1419 ActivityOptions.abort(options); 1420 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1421 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1422 return false; 1423 } 1424 1425 final TaskRecord nextTask = next.task; 1426 final TaskRecord prevTask = prev != null ? prev.task : null; 1427 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1428 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1429 if (prevTask == nextTask) { 1430 prevTask.setFrontOfTask(); 1431 } else if (prevTask != topTask()) { 1432 // This task is going away but it was supposed to return to the home task. 1433 // Now the task above it has to return to the home task instead. 1434 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1435 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1436 } else { 1437 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1438 "resumeTopActivityLocked: Launching home next"); 1439 // Only resume home if on home display 1440 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1441 } 1442 } 1443 1444 // If we are sleeping, and there is no resumed activity, and the top 1445 // activity is paused, well that is the state we want. 1446 if (mService.isSleepingOrShuttingDown() 1447 && mLastPausedActivity == next 1448 && mStackSupervisor.allPausedActivitiesComplete()) { 1449 // Make sure we have executed any pending transitions, since there 1450 // should be nothing left to do at this point. 1451 mWindowManager.executeAppTransition(); 1452 mNoAnimActivities.clear(); 1453 ActivityOptions.abort(options); 1454 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1455 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1456 return false; 1457 } 1458 1459 // Make sure that the user who owns this activity is started. If not, 1460 // we will just leave it as is because someone should be bringing 1461 // another user's activities to the top of the stack. 1462 if (mService.mStartedUsers.get(next.userId) == null) { 1463 Slog.w(TAG, "Skipping resume of top activity " + next 1464 + ": user " + next.userId + " is stopped"); 1465 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1466 return false; 1467 } 1468 1469 // The activity may be waiting for stop, but that is no longer 1470 // appropriate for it. 1471 mStackSupervisor.mStoppingActivities.remove(next); 1472 mStackSupervisor.mGoingToSleepActivities.remove(next); 1473 next.sleeping = false; 1474 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1475 1476 next.updateOptionsLocked(options); 1477 1478 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1479 1480 // If we are currently pausing an activity, then don't do anything 1481 // until that is done. 1482 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1483 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1484 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1485 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1486 return false; 1487 } 1488 1489 // Okay we are now going to start a switch, to 'next'. We may first 1490 // have to pause the current activity, but this is an important point 1491 // where we have decided to go to 'next' so keep track of that. 1492 // XXX "App Redirected" dialog is getting too many false positives 1493 // at this point, so turn off for now. 1494 if (false) { 1495 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1496 long now = SystemClock.uptimeMillis(); 1497 final boolean inTime = mLastStartedActivity.startTime != 0 1498 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1499 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1500 final int nextUid = next.info.applicationInfo.uid; 1501 if (inTime && lastUid != nextUid 1502 && lastUid != next.launchedFromUid 1503 && mService.checkPermission( 1504 android.Manifest.permission.STOP_APP_SWITCHES, 1505 -1, next.launchedFromUid) 1506 != PackageManager.PERMISSION_GRANTED) { 1507 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1508 } else { 1509 next.startTime = now; 1510 mLastStartedActivity = next; 1511 } 1512 } else { 1513 next.startTime = SystemClock.uptimeMillis(); 1514 mLastStartedActivity = next; 1515 } 1516 } 1517 1518 // We need to start pausing the current activity so the top one 1519 // can be resumed... 1520 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1521 if (mResumedActivity != null) { 1522 pausing = true; 1523 startPausingLocked(userLeaving, false); 1524 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1525 } 1526 if (pausing) { 1527 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1528 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1529 // At this point we want to put the upcoming activity's process 1530 // at the top of the LRU list, since we know we will be needing it 1531 // very soon and it would be a waste to let it get killed if it 1532 // happens to be sitting towards the end. 1533 if (next.app != null && next.app.thread != null) { 1534 // No reason to do full oom adj update here; we'll let that 1535 // happen whenever it needs to later. 1536 mService.updateLruProcessLocked(next.app, true, null); 1537 } 1538 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1539 return true; 1540 } 1541 1542 // If the most recent activity was noHistory but was only stopped rather 1543 // than stopped+finished because the device went to sleep, we need to make 1544 // sure to finish it as we're making a new activity topmost. 1545 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1546 !mLastNoHistoryActivity.finishing) { 1547 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1548 " on new resume"); 1549 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1550 null, "no-history", false); 1551 mLastNoHistoryActivity = null; 1552 } 1553 1554 if (prev != null && prev != next) { 1555 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1556 prev.waitingVisible = true; 1557 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1558 if (DEBUG_SWITCH) Slog.v( 1559 TAG, "Resuming top, waiting visible to hide: " + prev); 1560 } else { 1561 // The next activity is already visible, so hide the previous 1562 // activity's windows right now so we can show the new one ASAP. 1563 // We only do this if the previous is finishing, which should mean 1564 // it is on top of the one being resumed so hiding it quickly 1565 // is good. Otherwise, we want to do the normal route of allowing 1566 // the resumed activity to be shown so we can decide if the 1567 // previous should actually be hidden depending on whether the 1568 // new one is found to be full-screen or not. 1569 if (prev.finishing) { 1570 mWindowManager.setAppVisibility(prev.appToken, false); 1571 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1572 + prev + ", waitingVisible=" 1573 + (prev != null ? prev.waitingVisible : null) 1574 + ", nowVisible=" + next.nowVisible); 1575 } else { 1576 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1577 + prev + ", waitingVisible=" 1578 + (prev != null ? prev.waitingVisible : null) 1579 + ", nowVisible=" + next.nowVisible); 1580 } 1581 } 1582 } 1583 1584 // Launching this app's activity, make sure the app is no longer 1585 // considered stopped. 1586 try { 1587 AppGlobals.getPackageManager().setPackageStoppedState( 1588 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1589 } catch (RemoteException e1) { 1590 } catch (IllegalArgumentException e) { 1591 Slog.w(TAG, "Failed trying to unstop package " 1592 + next.packageName + ": " + e); 1593 } 1594 1595 // We are starting up the next activity, so tell the window manager 1596 // that the previous one will be hidden soon. This way it can know 1597 // to ignore it when computing the desired screen orientation. 1598 boolean anim = true; 1599 if (prev != null) { 1600 if (prev.finishing) { 1601 if (DEBUG_TRANSITION) Slog.v(TAG, 1602 "Prepare close transition: prev=" + prev); 1603 if (mNoAnimActivities.contains(prev)) { 1604 anim = false; 1605 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1606 } else { 1607 mWindowManager.prepareAppTransition(prev.task == next.task 1608 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1609 : AppTransition.TRANSIT_TASK_CLOSE, false); 1610 } 1611 mWindowManager.setAppWillBeHidden(prev.appToken); 1612 mWindowManager.setAppVisibility(prev.appToken, false); 1613 } else { 1614 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1615 if (mNoAnimActivities.contains(next)) { 1616 anim = false; 1617 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1618 } else { 1619 mWindowManager.prepareAppTransition(prev.task == next.task 1620 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1621 : AppTransition.TRANSIT_TASK_OPEN, false); 1622 } 1623 } 1624 if (false) { 1625 mWindowManager.setAppWillBeHidden(prev.appToken); 1626 mWindowManager.setAppVisibility(prev.appToken, false); 1627 } 1628 } else { 1629 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1630 if (mNoAnimActivities.contains(next)) { 1631 anim = false; 1632 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1633 } else { 1634 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1635 } 1636 } 1637 1638 Bundle resumeAnimOptions = null; 1639 if (anim) { 1640 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1641 if (opts != null) { 1642 resumeAnimOptions = opts.toBundle(); 1643 } 1644 next.applyOptionsLocked(); 1645 } else { 1646 next.clearOptionsLocked(); 1647 } 1648 1649 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1650 if (next.app != null && next.app.thread != null) { 1651 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1652 1653 // This activity is now becoming visible. 1654 mWindowManager.setAppVisibility(next.appToken, true); 1655 1656 // schedule launch ticks to collect information about slow apps. 1657 next.startLaunchTickingLocked(); 1658 1659 ActivityRecord lastResumedActivity = 1660 lastStack == null ? null :lastStack.mResumedActivity; 1661 ActivityState lastState = next.state; 1662 1663 mService.updateCpuStats(); 1664 1665 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1666 next.state = ActivityState.RESUMED; 1667 mResumedActivity = next; 1668 next.task.touchActiveTime(); 1669 mService.addRecentTaskLocked(next.task); 1670 mService.updateLruProcessLocked(next.app, true, null); 1671 updateLRUListLocked(next); 1672 mService.updateOomAdjLocked(); 1673 1674 // Have the window manager re-evaluate the orientation of 1675 // the screen based on the new activity order. 1676 boolean notUpdated = true; 1677 if (mStackSupervisor.isFrontStack(this)) { 1678 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1679 mService.mConfiguration, 1680 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1681 if (config != null) { 1682 next.frozenBeforeDestroy = true; 1683 } 1684 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1685 } 1686 1687 if (notUpdated) { 1688 // The configuration update wasn't able to keep the existing 1689 // instance of the activity, and instead started a new one. 1690 // We should be all done, but let's just make sure our activity 1691 // is still at the top and schedule another run if something 1692 // weird happened. 1693 ActivityRecord nextNext = topRunningActivityLocked(null); 1694 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1695 "Activity config changed during resume: " + next 1696 + ", new next: " + nextNext); 1697 if (nextNext != next) { 1698 // Do over! 1699 mStackSupervisor.scheduleResumeTopActivities(); 1700 } 1701 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1702 mNoAnimActivities.clear(); 1703 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1704 return true; 1705 } 1706 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1707 return false; 1708 } 1709 1710 try { 1711 // Deliver all pending results. 1712 ArrayList<ResultInfo> a = next.results; 1713 if (a != null) { 1714 final int N = a.size(); 1715 if (!next.finishing && N > 0) { 1716 if (DEBUG_RESULTS) Slog.v( 1717 TAG, "Delivering results to " + next 1718 + ": " + a); 1719 next.app.thread.scheduleSendResult(next.appToken, a); 1720 } 1721 } 1722 1723 if (next.newIntents != null) { 1724 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1725 } 1726 1727 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1728 next.userId, System.identityHashCode(next), 1729 next.task.taskId, next.shortComponentName); 1730 1731 next.sleeping = false; 1732 mService.showAskCompatModeDialogLocked(next); 1733 next.app.pendingUiClean = true; 1734 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1735 next.clearOptionsLocked(); 1736 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1737 mService.isNextTransitionForward(), resumeAnimOptions); 1738 1739 mStackSupervisor.checkReadyForSleepLocked(); 1740 1741 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1742 } catch (Exception e) { 1743 // Whoops, need to restart this activity! 1744 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1745 + lastState + ": " + next); 1746 next.state = lastState; 1747 if (lastStack != null) { 1748 lastStack.mResumedActivity = lastResumedActivity; 1749 } 1750 Slog.i(TAG, "Restarting because process died: " + next); 1751 if (!next.hasBeenLaunched) { 1752 next.hasBeenLaunched = true; 1753 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1754 mStackSupervisor.isFrontStack(lastStack)) { 1755 mWindowManager.setAppStartingWindow( 1756 next.appToken, next.packageName, next.theme, 1757 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1758 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1759 next.windowFlags, null, true); 1760 } 1761 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1762 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1763 return true; 1764 } 1765 1766 // From this point on, if something goes wrong there is no way 1767 // to recover the activity. 1768 try { 1769 next.visible = true; 1770 completeResumeLocked(next); 1771 } catch (Exception e) { 1772 // If any exception gets thrown, toss away this 1773 // activity and try the next one. 1774 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1775 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1776 "resume-exception", true); 1777 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1778 return true; 1779 } 1780 next.stopped = false; 1781 1782 } else { 1783 // Whoops, need to restart this activity! 1784 if (!next.hasBeenLaunched) { 1785 next.hasBeenLaunched = true; 1786 } else { 1787 if (SHOW_APP_STARTING_PREVIEW) { 1788 mWindowManager.setAppStartingWindow( 1789 next.appToken, next.packageName, next.theme, 1790 mService.compatibilityInfoForPackageLocked( 1791 next.info.applicationInfo), 1792 next.nonLocalizedLabel, 1793 next.labelRes, next.icon, next.logo, next.windowFlags, 1794 null, true); 1795 } 1796 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1797 } 1798 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1799 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1800 } 1801 1802 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1803 return true; 1804 } 1805 1806 private void insertTaskAtTop(TaskRecord task) { 1807 // If this is being moved to the top by another activity or being launched from the home 1808 // activity, set mOnTopOfHome accordingly. 1809 if (isOnHomeDisplay()) { 1810 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1811 final boolean fromHome = lastStack.isHomeStack(); 1812 if (!isHomeStack() && (fromHome || topTask() != task)) { 1813 task.mOnTopOfHome = fromHome; 1814 } 1815 } else { 1816 task.mOnTopOfHome = false; 1817 } 1818 1819 mTaskHistory.remove(task); 1820 // Now put task at top. 1821 int stackNdx = mTaskHistory.size(); 1822 if (!isCurrentProfileLocked(task.userId)) { 1823 // Put non-current user tasks below current user tasks. 1824 while (--stackNdx >= 0) { 1825 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1826 break; 1827 } 1828 } 1829 ++stackNdx; 1830 } 1831 mTaskHistory.add(stackNdx, task); 1832 } 1833 1834 final void startActivityLocked(ActivityRecord r, boolean newTask, 1835 boolean doResume, boolean keepCurTransition, Bundle options) { 1836 TaskRecord rTask = r.task; 1837 final int taskId = rTask.taskId; 1838 if (taskForIdLocked(taskId) == null || newTask) { 1839 // Last activity in task had been removed or ActivityManagerService is reusing task. 1840 // Insert or replace. 1841 // Might not even be in. 1842 insertTaskAtTop(rTask); 1843 mWindowManager.moveTaskToTop(taskId); 1844 } 1845 TaskRecord task = null; 1846 if (!newTask) { 1847 // If starting in an existing task, find where that is... 1848 boolean startIt = true; 1849 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1850 task = mTaskHistory.get(taskNdx); 1851 if (task == r.task) { 1852 // Here it is! Now, if this is not yet visible to the 1853 // user, then just add it without starting; it will 1854 // get started when the user navigates back to it. 1855 if (!startIt) { 1856 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1857 + task, new RuntimeException("here").fillInStackTrace()); 1858 task.addActivityToTop(r); 1859 r.putInHistory(); 1860 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1861 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1862 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1863 r.userId, r.info.configChanges); 1864 if (VALIDATE_TOKENS) { 1865 validateAppTokensLocked(); 1866 } 1867 ActivityOptions.abort(options); 1868 return; 1869 } 1870 break; 1871 } else if (task.numFullscreen > 0) { 1872 startIt = false; 1873 } 1874 } 1875 } 1876 1877 // Place a new activity at top of stack, so it is next to interact 1878 // with the user. 1879 1880 // If we are not placing the new activity frontmost, we do not want 1881 // to deliver the onUserLeaving callback to the actual frontmost 1882 // activity 1883 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1884 mStackSupervisor.mUserLeaving = false; 1885 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1886 "startActivity() behind front, mUserLeaving=false"); 1887 } 1888 1889 task = r.task; 1890 1891 // Slot the activity into the history stack and proceed 1892 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1893 new RuntimeException("here").fillInStackTrace()); 1894 task.addActivityToTop(r); 1895 task.setFrontOfTask(); 1896 1897 r.putInHistory(); 1898 if (!isHomeStack() || numActivities() > 0) { 1899 // We want to show the starting preview window if we are 1900 // switching to a new task, or the next activity's process is 1901 // not currently running. 1902 boolean showStartingIcon = newTask; 1903 ProcessRecord proc = r.app; 1904 if (proc == null) { 1905 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1906 } 1907 if (proc == null || proc.thread == null) { 1908 showStartingIcon = true; 1909 } 1910 if (DEBUG_TRANSITION) Slog.v(TAG, 1911 "Prepare open transition: starting " + r); 1912 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1913 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1914 mNoAnimActivities.add(r); 1915 } else { 1916 mWindowManager.prepareAppTransition(newTask 1917 ? AppTransition.TRANSIT_TASK_OPEN 1918 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1919 mNoAnimActivities.remove(r); 1920 } 1921 r.updateOptionsLocked(options); 1922 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1923 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1924 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1925 r.info.configChanges); 1926 boolean doShow = true; 1927 if (newTask) { 1928 // Even though this activity is starting fresh, we still need 1929 // to reset it to make sure we apply affinities to move any 1930 // existing activities from other tasks in to it. 1931 // If the caller has requested that the target task be 1932 // reset, then do so. 1933 if ((r.intent.getFlags() 1934 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1935 resetTaskIfNeededLocked(r, r); 1936 doShow = topRunningNonDelayedActivityLocked(null) == r; 1937 } 1938 } 1939 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1940 // Figure out if we are transitioning from another activity that is 1941 // "has the same starting icon" as the next one. This allows the 1942 // window manager to keep the previous window it had previously 1943 // created, if it still had one. 1944 ActivityRecord prev = mResumedActivity; 1945 if (prev != null) { 1946 // We don't want to reuse the previous starting preview if: 1947 // (1) The current activity is in a different task. 1948 if (prev.task != r.task) { 1949 prev = null; 1950 } 1951 // (2) The current activity is already displayed. 1952 else if (prev.nowVisible) { 1953 prev = null; 1954 } 1955 } 1956 mWindowManager.setAppStartingWindow( 1957 r.appToken, r.packageName, r.theme, 1958 mService.compatibilityInfoForPackageLocked( 1959 r.info.applicationInfo), r.nonLocalizedLabel, 1960 r.labelRes, r.icon, r.logo, r.windowFlags, 1961 prev != null ? prev.appToken : null, showStartingIcon); 1962 r.mStartingWindowShown = true; 1963 } 1964 } else { 1965 // If this is the first activity, don't do any fancy animations, 1966 // because there is nothing for it to animate on top of. 1967 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1968 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1969 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1970 r.info.configChanges); 1971 ActivityOptions.abort(options); 1972 } 1973 if (VALIDATE_TOKENS) { 1974 validateAppTokensLocked(); 1975 } 1976 1977 if (doResume) { 1978 mStackSupervisor.resumeTopActivitiesLocked(); 1979 } 1980 } 1981 1982 final void validateAppTokensLocked() { 1983 mValidateAppTokens.clear(); 1984 mValidateAppTokens.ensureCapacity(numActivities()); 1985 final int numTasks = mTaskHistory.size(); 1986 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1987 TaskRecord task = mTaskHistory.get(taskNdx); 1988 final ArrayList<ActivityRecord> activities = task.mActivities; 1989 if (activities.isEmpty()) { 1990 continue; 1991 } 1992 TaskGroup group = new TaskGroup(); 1993 group.taskId = task.taskId; 1994 mValidateAppTokens.add(group); 1995 final int numActivities = activities.size(); 1996 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1997 final ActivityRecord r = activities.get(activityNdx); 1998 group.tokens.add(r.appToken); 1999 } 2000 } 2001 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2002 } 2003 2004 /** 2005 * Perform a reset of the given task, if needed as part of launching it. 2006 * Returns the new HistoryRecord at the top of the task. 2007 */ 2008 /** 2009 * Helper method for #resetTaskIfNeededLocked. 2010 * We are inside of the task being reset... we'll either finish this activity, push it out 2011 * for another task, or leave it as-is. 2012 * @param task The task containing the Activity (taskTop) that might be reset. 2013 * @param forceReset 2014 * @return An ActivityOptions that needs to be processed. 2015 */ 2016 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2017 ActivityOptions topOptions = null; 2018 2019 int replyChainEnd = -1; 2020 boolean canMoveOptions = true; 2021 2022 // We only do this for activities that are not the root of the task (since if we finish 2023 // the root, we may no longer have the task!). 2024 final ArrayList<ActivityRecord> activities = task.mActivities; 2025 final int numActivities = activities.size(); 2026 for (int i = numActivities - 1; i > 0; --i ) { 2027 ActivityRecord target = activities.get(i); 2028 2029 final int flags = target.info.flags; 2030 final boolean finishOnTaskLaunch = 2031 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2032 final boolean allowTaskReparenting = 2033 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2034 final boolean clearWhenTaskReset = 2035 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2036 2037 if (!finishOnTaskLaunch 2038 && !clearWhenTaskReset 2039 && target.resultTo != null) { 2040 // If this activity is sending a reply to a previous 2041 // activity, we can't do anything with it now until 2042 // we reach the start of the reply chain. 2043 // XXX note that we are assuming the result is always 2044 // to the previous activity, which is almost always 2045 // the case but we really shouldn't count on. 2046 if (replyChainEnd < 0) { 2047 replyChainEnd = i; 2048 } 2049 } else if (!finishOnTaskLaunch 2050 && !clearWhenTaskReset 2051 && allowTaskReparenting 2052 && target.taskAffinity != null 2053 && !target.taskAffinity.equals(task.affinity)) { 2054 // If this activity has an affinity for another 2055 // task, then we need to move it out of here. We will 2056 // move it as far out of the way as possible, to the 2057 // bottom of the activity stack. This also keeps it 2058 // correctly ordered with any activities we previously 2059 // moved. 2060 final ThumbnailHolder newThumbHolder; 2061 final TaskRecord targetTask; 2062 final ActivityRecord bottom = 2063 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2064 mTaskHistory.get(0).mActivities.get(0) : null; 2065 if (bottom != null && target.taskAffinity != null 2066 && target.taskAffinity.equals(bottom.task.affinity)) { 2067 // If the activity currently at the bottom has the 2068 // same task affinity as the one we are moving, 2069 // then merge it into the same task. 2070 targetTask = bottom.task; 2071 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2072 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2073 + " out to bottom task " + bottom.task); 2074 } else { 2075 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2076 null, null, null, false); 2077 newThumbHolder = targetTask; 2078 targetTask.affinityIntent = target.intent; 2079 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2080 + " out to new task " + target.task); 2081 } 2082 2083 target.thumbHolder = newThumbHolder; 2084 2085 final int targetTaskId = targetTask.taskId; 2086 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2087 2088 boolean noOptions = canMoveOptions; 2089 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2090 for (int srcPos = start; srcPos >= i; --srcPos) { 2091 final ActivityRecord p = activities.get(srcPos); 2092 if (p.finishing) { 2093 continue; 2094 } 2095 2096 ThumbnailHolder curThumbHolder = p.thumbHolder; 2097 canMoveOptions = false; 2098 if (noOptions && topOptions == null) { 2099 topOptions = p.takeOptionsLocked(); 2100 if (topOptions != null) { 2101 noOptions = false; 2102 } 2103 } 2104 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2105 + task + " adding to task=" + targetTask 2106 + " Callers=" + Debug.getCallers(4)); 2107 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2108 + " out to target's task " + target.task); 2109 p.setTask(targetTask, curThumbHolder, false); 2110 targetTask.addActivityAtBottom(p); 2111 2112 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2113 } 2114 2115 mWindowManager.moveTaskToBottom(targetTaskId); 2116 if (VALIDATE_TOKENS) { 2117 validateAppTokensLocked(); 2118 } 2119 2120 replyChainEnd = -1; 2121 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2122 // If the activity should just be removed -- either 2123 // because it asks for it, or the task should be 2124 // cleared -- then finish it and anything that is 2125 // part of its reply chain. 2126 int end; 2127 if (clearWhenTaskReset) { 2128 // In this case, we want to finish this activity 2129 // and everything above it, so be sneaky and pretend 2130 // like these are all in the reply chain. 2131 end = numActivities - 1; 2132 } else if (replyChainEnd < 0) { 2133 end = i; 2134 } else { 2135 end = replyChainEnd; 2136 } 2137 boolean noOptions = canMoveOptions; 2138 for (int srcPos = i; srcPos <= end; srcPos++) { 2139 ActivityRecord p = activities.get(srcPos); 2140 if (p.finishing) { 2141 continue; 2142 } 2143 canMoveOptions = false; 2144 if (noOptions && topOptions == null) { 2145 topOptions = p.takeOptionsLocked(); 2146 if (topOptions != null) { 2147 noOptions = false; 2148 } 2149 } 2150 if (DEBUG_TASKS) Slog.w(TAG, 2151 "resetTaskIntendedTask: calling finishActivity on " + p); 2152 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2153 end--; 2154 srcPos--; 2155 } 2156 } 2157 replyChainEnd = -1; 2158 } else { 2159 // If we were in the middle of a chain, well the 2160 // activity that started it all doesn't want anything 2161 // special, so leave it all as-is. 2162 replyChainEnd = -1; 2163 } 2164 } 2165 2166 return topOptions; 2167 } 2168 2169 /** 2170 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2171 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2172 * @param affinityTask The task we are looking for an affinity to. 2173 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2174 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2175 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2176 */ 2177 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2178 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2179 int replyChainEnd = -1; 2180 final int taskId = task.taskId; 2181 final String taskAffinity = task.affinity; 2182 2183 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2184 final int numActivities = activities.size(); 2185 // Do not operate on the root Activity. 2186 for (int i = numActivities - 1; i > 0; --i) { 2187 ActivityRecord target = activities.get(i); 2188 2189 final int flags = target.info.flags; 2190 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2191 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2192 2193 if (target.resultTo != null) { 2194 // If this activity is sending a reply to a previous 2195 // activity, we can't do anything with it now until 2196 // we reach the start of the reply chain. 2197 // XXX note that we are assuming the result is always 2198 // to the previous activity, which is almost always 2199 // the case but we really shouldn't count on. 2200 if (replyChainEnd < 0) { 2201 replyChainEnd = i; 2202 } 2203 } else if (topTaskIsHigher 2204 && allowTaskReparenting 2205 && taskAffinity != null 2206 && taskAffinity.equals(target.taskAffinity)) { 2207 // This activity has an affinity for our task. Either remove it if we are 2208 // clearing or move it over to our task. Note that 2209 // we currently punt on the case where we are resetting a 2210 // task that is not at the top but who has activities above 2211 // with an affinity to it... this is really not a normal 2212 // case, and we will need to later pull that task to the front 2213 // and usually at that point we will do the reset and pick 2214 // up those remaining activities. (This only happens if 2215 // someone starts an activity in a new task from an activity 2216 // in a task that is not currently on top.) 2217 if (forceReset || finishOnTaskLaunch) { 2218 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2219 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2220 for (int srcPos = start; srcPos >= i; --srcPos) { 2221 final ActivityRecord p = activities.get(srcPos); 2222 if (p.finishing) { 2223 continue; 2224 } 2225 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2226 } 2227 } else { 2228 if (taskInsertionPoint < 0) { 2229 taskInsertionPoint = task.mActivities.size(); 2230 2231 } 2232 2233 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2234 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2235 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2236 for (int srcPos = start; srcPos >= i; --srcPos) { 2237 final ActivityRecord p = activities.get(srcPos); 2238 p.setTask(task, null, false); 2239 task.addActivityAtIndex(taskInsertionPoint, p); 2240 2241 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2242 + " to stack at " + task, 2243 new RuntimeException("here").fillInStackTrace()); 2244 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2245 + " in to resetting task " + task); 2246 mWindowManager.setAppGroupId(p.appToken, taskId); 2247 } 2248 mWindowManager.moveTaskToTop(taskId); 2249 if (VALIDATE_TOKENS) { 2250 validateAppTokensLocked(); 2251 } 2252 2253 // Now we've moved it in to place... but what if this is 2254 // a singleTop activity and we have put it on top of another 2255 // instance of the same activity? Then we drop the instance 2256 // below so it remains singleTop. 2257 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2258 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2259 int targetNdx = taskActivities.indexOf(target); 2260 if (targetNdx > 0) { 2261 ActivityRecord p = taskActivities.get(targetNdx - 1); 2262 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2263 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2264 false); 2265 } 2266 } 2267 } 2268 } 2269 2270 replyChainEnd = -1; 2271 } 2272 } 2273 return taskInsertionPoint; 2274 } 2275 2276 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2277 ActivityRecord newActivity) { 2278 boolean forceReset = 2279 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2280 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2281 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2282 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2283 forceReset = true; 2284 } 2285 } 2286 2287 final TaskRecord task = taskTop.task; 2288 2289 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2290 * for remaining tasks. Used for later tasks to reparent to task. */ 2291 boolean taskFound = false; 2292 2293 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2294 ActivityOptions topOptions = null; 2295 2296 // Preserve the location for reparenting in the new task. 2297 int reparentInsertionPoint = -1; 2298 2299 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2300 final TaskRecord targetTask = mTaskHistory.get(i); 2301 2302 if (targetTask == task) { 2303 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2304 taskFound = true; 2305 } else { 2306 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2307 taskFound, forceReset, reparentInsertionPoint); 2308 } 2309 } 2310 2311 int taskNdx = mTaskHistory.indexOf(task); 2312 do { 2313 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2314 } while (taskTop == null && taskNdx >= 0); 2315 2316 if (topOptions != null) { 2317 // If we got some ActivityOptions from an activity on top that 2318 // was removed from the task, propagate them to the new real top. 2319 if (taskTop != null) { 2320 taskTop.updateOptionsLocked(topOptions); 2321 } else { 2322 topOptions.abort(); 2323 } 2324 } 2325 2326 return taskTop; 2327 } 2328 2329 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2330 String resultWho, int requestCode, int resultCode, Intent data) { 2331 2332 if (callingUid > 0) { 2333 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2334 data, r.getUriPermissionsLocked()); 2335 } 2336 2337 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2338 + " : who=" + resultWho + " req=" + requestCode 2339 + " res=" + resultCode + " data=" + data); 2340 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2341 try { 2342 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2343 list.add(new ResultInfo(resultWho, requestCode, 2344 resultCode, data)); 2345 r.app.thread.scheduleSendResult(r.appToken, list); 2346 return; 2347 } catch (Exception e) { 2348 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2349 } 2350 } 2351 2352 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2353 } 2354 2355 private void adjustFocusedActivityLocked(ActivityRecord r) { 2356 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2357 ActivityRecord next = topRunningActivityLocked(null); 2358 if (next != r) { 2359 final TaskRecord task = r.task; 2360 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2361 mStackSupervisor.moveHomeToTop(); 2362 } 2363 } 2364 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2365 if (top != null) { 2366 mService.setFocusedActivityLocked(top); 2367 } 2368 } 2369 } 2370 2371 final void stopActivityLocked(ActivityRecord r) { 2372 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2373 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2374 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2375 if (!r.finishing) { 2376 if (!mService.isSleeping()) { 2377 if (DEBUG_STATES) { 2378 Slog.d(TAG, "no-history finish of " + r); 2379 } 2380 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2381 "no-history", false); 2382 } else { 2383 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2384 + " on stop because we're just sleeping"); 2385 } 2386 } 2387 } 2388 2389 if (r.app != null && r.app.thread != null) { 2390 adjustFocusedActivityLocked(r); 2391 r.resumeKeyDispatchingLocked(); 2392 try { 2393 r.stopped = false; 2394 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2395 + " (stop requested)"); 2396 r.state = ActivityState.STOPPING; 2397 if (DEBUG_VISBILITY) Slog.v( 2398 TAG, "Stopping visible=" + r.visible + " for " + r); 2399 if (!r.visible) { 2400 mWindowManager.setAppVisibility(r.appToken, false); 2401 } 2402 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2403 if (mService.isSleepingOrShuttingDown()) { 2404 r.setSleeping(true); 2405 } 2406 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2407 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2408 } catch (Exception e) { 2409 // Maybe just ignore exceptions here... if the process 2410 // has crashed, our death notification will clean things 2411 // up. 2412 Slog.w(TAG, "Exception thrown during pause", e); 2413 // Just in case, assume it to be stopped. 2414 r.stopped = true; 2415 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2416 r.state = ActivityState.STOPPED; 2417 if (r.configDestroy) { 2418 destroyActivityLocked(r, true, false, "stop-except"); 2419 } 2420 } 2421 } 2422 } 2423 2424 /** 2425 * @return Returns true if the activity is being finished, false if for 2426 * some reason it is being left as-is. 2427 */ 2428 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2429 Intent resultData, String reason, boolean oomAdj) { 2430 ActivityRecord r = isInStackLocked(token); 2431 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2432 TAG, "Finishing activity token=" + token + " r=" 2433 + ", result=" + resultCode + ", data=" + resultData 2434 + ", reason=" + reason); 2435 if (r == null) { 2436 return false; 2437 } 2438 2439 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2440 return true; 2441 } 2442 2443 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2444 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2445 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2446 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2447 ActivityRecord r = activities.get(activityNdx); 2448 if (r.resultTo == self && r.requestCode == requestCode) { 2449 if ((r.resultWho == null && resultWho == null) || 2450 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2451 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2452 false); 2453 } 2454 } 2455 } 2456 } 2457 mService.updateOomAdjLocked(); 2458 } 2459 2460 final void finishTopRunningActivityLocked(ProcessRecord app) { 2461 ActivityRecord r = topRunningActivityLocked(null); 2462 if (r != null && r.app == app) { 2463 // If the top running activity is from this crashing 2464 // process, then terminate it to avoid getting in a loop. 2465 Slog.w(TAG, " Force finishing activity " 2466 + r.intent.getComponent().flattenToShortString()); 2467 int taskNdx = mTaskHistory.indexOf(r.task); 2468 int activityNdx = r.task.mActivities.indexOf(r); 2469 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2470 // Also terminate any activities below it that aren't yet 2471 // stopped, to avoid a situation where one will get 2472 // re-start our crashing activity once it gets resumed again. 2473 --activityNdx; 2474 if (activityNdx < 0) { 2475 do { 2476 --taskNdx; 2477 if (taskNdx < 0) { 2478 break; 2479 } 2480 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2481 } while (activityNdx < 0); 2482 } 2483 if (activityNdx >= 0) { 2484 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2485 if (r.state == ActivityState.RESUMED 2486 || r.state == ActivityState.PAUSING 2487 || r.state == ActivityState.PAUSED) { 2488 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2489 Slog.w(TAG, " Force finishing activity " 2490 + r.intent.getComponent().flattenToShortString()); 2491 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2492 } 2493 } 2494 } 2495 } 2496 } 2497 2498 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2499 ArrayList<ActivityRecord> activities = r.task.mActivities; 2500 for (int index = activities.indexOf(r); index >= 0; --index) { 2501 ActivityRecord cur = activities.get(index); 2502 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2503 break; 2504 } 2505 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2506 } 2507 return true; 2508 } 2509 2510 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2511 // send the result 2512 ActivityRecord resultTo = r.resultTo; 2513 if (resultTo != null) { 2514 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2515 + " who=" + r.resultWho + " req=" + r.requestCode 2516 + " res=" + resultCode + " data=" + resultData); 2517 if (r.info.applicationInfo.uid > 0) { 2518 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2519 resultTo.packageName, resultData, 2520 resultTo.getUriPermissionsLocked()); 2521 } 2522 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2523 resultData); 2524 r.resultTo = null; 2525 } 2526 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2527 2528 // Make sure this HistoryRecord is not holding on to other resources, 2529 // because clients have remote IPC references to this object so we 2530 // can't assume that will go away and want to avoid circular IPC refs. 2531 r.results = null; 2532 r.pendingResults = null; 2533 r.newIntents = null; 2534 r.icicle = null; 2535 } 2536 2537 /** 2538 * @return Returns true if this activity has been removed from the history 2539 * list, or false if it is still in the list and will be removed later. 2540 */ 2541 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2542 String reason, boolean oomAdj) { 2543 if (r.finishing) { 2544 Slog.w(TAG, "Duplicate finish request for " + r); 2545 return false; 2546 } 2547 2548 r.makeFinishing(); 2549 final TaskRecord task = r.task; 2550 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2551 r.userId, System.identityHashCode(r), 2552 task.taskId, r.shortComponentName, reason); 2553 final ArrayList<ActivityRecord> activities = task.mActivities; 2554 final int index = activities.indexOf(r); 2555 if (index < (activities.size() - 1)) { 2556 task.setFrontOfTask(); 2557 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2558 // If the caller asked that this activity (and all above it) 2559 // be cleared when the task is reset, don't lose that information, 2560 // but propagate it up to the next activity. 2561 ActivityRecord next = activities.get(index+1); 2562 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2563 } 2564 } 2565 2566 r.pauseKeyDispatchingLocked(); 2567 2568 adjustFocusedActivityLocked(r); 2569 2570 finishActivityResultsLocked(r, resultCode, resultData); 2571 2572 if (mResumedActivity == r) { 2573 boolean endTask = index <= 0; 2574 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2575 "Prepare close transition: finishing " + r); 2576 mWindowManager.prepareAppTransition(endTask 2577 ? AppTransition.TRANSIT_TASK_CLOSE 2578 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2579 2580 // Tell window manager to prepare for this one to be removed. 2581 mWindowManager.setAppVisibility(r.appToken, false); 2582 2583 if (mPausingActivity == null) { 2584 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2585 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2586 startPausingLocked(false, false); 2587 } 2588 2589 if (endTask) { 2590 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2591 } 2592 } else if (r.state != ActivityState.PAUSING) { 2593 // If the activity is PAUSING, we will complete the finish once 2594 // it is done pausing; else we can just directly finish it here. 2595 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2596 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2597 } else { 2598 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2599 } 2600 2601 return false; 2602 } 2603 2604 static final int FINISH_IMMEDIATELY = 0; 2605 static final int FINISH_AFTER_PAUSE = 1; 2606 static final int FINISH_AFTER_VISIBLE = 2; 2607 2608 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2609 // First things first: if this activity is currently visible, 2610 // and the resumed activity is not yet visible, then hold off on 2611 // finishing until the resumed one becomes visible. 2612 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2613 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2614 mStackSupervisor.mStoppingActivities.add(r); 2615 if (mStackSupervisor.mStoppingActivities.size() > 3 2616 || r.frontOfTask && mTaskHistory.size() <= 1) { 2617 // If we already have a few activities waiting to stop, 2618 // then give up on things going idle and start clearing 2619 // them out. Or if r is the last of activity of the last task the stack 2620 // will be empty and must be cleared immediately. 2621 mStackSupervisor.scheduleIdleLocked(); 2622 } else { 2623 mStackSupervisor.checkReadyForSleepLocked(); 2624 } 2625 } 2626 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2627 + " (finish requested)"); 2628 r.state = ActivityState.STOPPING; 2629 if (oomAdj) { 2630 mService.updateOomAdjLocked(); 2631 } 2632 return r; 2633 } 2634 2635 // make sure the record is cleaned out of other places. 2636 mStackSupervisor.mStoppingActivities.remove(r); 2637 mStackSupervisor.mGoingToSleepActivities.remove(r); 2638 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2639 if (mResumedActivity == r) { 2640 mResumedActivity = null; 2641 } 2642 final ActivityState prevState = r.state; 2643 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2644 r.state = ActivityState.FINISHING; 2645 2646 if (mode == FINISH_IMMEDIATELY 2647 || prevState == ActivityState.STOPPED 2648 || prevState == ActivityState.INITIALIZING) { 2649 // If this activity is already stopped, we can just finish 2650 // it right now. 2651 boolean activityRemoved = destroyActivityLocked(r, true, 2652 oomAdj, "finish-imm"); 2653 if (activityRemoved) { 2654 mStackSupervisor.resumeTopActivitiesLocked(); 2655 } 2656 return activityRemoved ? null : r; 2657 } 2658 2659 // Need to go through the full pause cycle to get this 2660 // activity into the stopped state and then finish it. 2661 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2662 mStackSupervisor.mFinishingActivities.add(r); 2663 r.resumeKeyDispatchingLocked(); 2664 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2665 return r; 2666 } 2667 2668 void finishAllActivitiesLocked() { 2669 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2670 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2671 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2672 final ActivityRecord r = activities.get(activityNdx); 2673 if (r.finishing) { 2674 continue; 2675 } 2676 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2677 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2678 } 2679 } 2680 } 2681 2682 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2683 Intent resultData) { 2684 final ActivityRecord srec = ActivityRecord.forToken(token); 2685 final TaskRecord task = srec.task; 2686 final ArrayList<ActivityRecord> activities = task.mActivities; 2687 final int start = activities.indexOf(srec); 2688 if (!mTaskHistory.contains(task) || (start < 0)) { 2689 return false; 2690 } 2691 int finishTo = start - 1; 2692 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2693 boolean foundParentInTask = false; 2694 final ComponentName dest = destIntent.getComponent(); 2695 if (start > 0 && dest != null) { 2696 for (int i = finishTo; i >= 0; i--) { 2697 ActivityRecord r = activities.get(i); 2698 if (r.info.packageName.equals(dest.getPackageName()) && 2699 r.info.name.equals(dest.getClassName())) { 2700 finishTo = i; 2701 parent = r; 2702 foundParentInTask = true; 2703 break; 2704 } 2705 } 2706 } 2707 2708 IActivityController controller = mService.mController; 2709 if (controller != null) { 2710 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2711 if (next != null) { 2712 // ask watcher if this is allowed 2713 boolean resumeOK = true; 2714 try { 2715 resumeOK = controller.activityResuming(next.packageName); 2716 } catch (RemoteException e) { 2717 mService.mController = null; 2718 Watchdog.getInstance().setActivityController(null); 2719 } 2720 2721 if (!resumeOK) { 2722 return false; 2723 } 2724 } 2725 } 2726 final long origId = Binder.clearCallingIdentity(); 2727 for (int i = start; i > finishTo; i--) { 2728 ActivityRecord r = activities.get(i); 2729 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2730 // Only return the supplied result for the first activity finished 2731 resultCode = Activity.RESULT_CANCELED; 2732 resultData = null; 2733 } 2734 2735 if (parent != null && foundParentInTask) { 2736 final int parentLaunchMode = parent.info.launchMode; 2737 final int destIntentFlags = destIntent.getFlags(); 2738 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2739 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2740 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2741 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2742 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2743 } else { 2744 try { 2745 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2746 destIntent.getComponent(), 0, srec.userId); 2747 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2748 null, aInfo, null, null, parent.appToken, null, 2749 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2750 0, null, true, null, null); 2751 foundParentInTask = res == ActivityManager.START_SUCCESS; 2752 } catch (RemoteException e) { 2753 foundParentInTask = false; 2754 } 2755 requestFinishActivityLocked(parent.appToken, resultCode, 2756 resultData, "navigate-up", true); 2757 } 2758 } 2759 Binder.restoreCallingIdentity(origId); 2760 return foundParentInTask; 2761 } 2762 /** 2763 * Perform the common clean-up of an activity record. This is called both 2764 * as part of destroyActivityLocked() (when destroying the client-side 2765 * representation) and cleaning things up as a result of its hosting 2766 * processing going away, in which case there is no remaining client-side 2767 * state to destroy so only the cleanup here is needed. 2768 */ 2769 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2770 boolean setState) { 2771 if (mResumedActivity == r) { 2772 mResumedActivity = null; 2773 } 2774 if (mPausingActivity == r) { 2775 mPausingActivity = null; 2776 } 2777 mService.clearFocusedActivity(r); 2778 2779 r.configDestroy = false; 2780 r.frozenBeforeDestroy = false; 2781 2782 if (setState) { 2783 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2784 r.state = ActivityState.DESTROYED; 2785 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2786 r.app = null; 2787 } 2788 2789 // Make sure this record is no longer in the pending finishes list. 2790 // This could happen, for example, if we are trimming activities 2791 // down to the max limit while they are still waiting to finish. 2792 mStackSupervisor.mFinishingActivities.remove(r); 2793 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2794 2795 // Remove any pending results. 2796 if (r.finishing && r.pendingResults != null) { 2797 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2798 PendingIntentRecord rec = apr.get(); 2799 if (rec != null) { 2800 mService.cancelIntentSenderLocked(rec, false); 2801 } 2802 } 2803 r.pendingResults = null; 2804 } 2805 2806 if (cleanServices) { 2807 cleanUpActivityServicesLocked(r); 2808 } 2809 2810 // Get rid of any pending idle timeouts. 2811 removeTimeoutsForActivityLocked(r); 2812 } 2813 2814 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2815 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2816 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2817 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2818 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2819 r.finishLaunchTickingLocked(); 2820 } 2821 2822 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2823 mStackSupervisor.removeChildActivityContainers(r); 2824 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2825 r.makeFinishing(); 2826 if (DEBUG_ADD_REMOVE) { 2827 RuntimeException here = new RuntimeException("here"); 2828 here.fillInStackTrace(); 2829 Slog.i(TAG, "Removing activity " + r + " from stack"); 2830 } 2831 r.takeFromHistory(); 2832 removeTimeoutsForActivityLocked(r); 2833 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2834 r.state = ActivityState.DESTROYED; 2835 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2836 r.app = null; 2837 mWindowManager.removeAppToken(r.appToken); 2838 if (VALIDATE_TOKENS) { 2839 validateAppTokensLocked(); 2840 } 2841 final TaskRecord task = r.task; 2842 if (task != null && task.removeActivity(r)) { 2843 if (DEBUG_STACK) Slog.i(TAG, 2844 "removeActivityFromHistoryLocked: last activity removed from " + this); 2845 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2846 mStackSupervisor.moveHomeToTop(); 2847 } 2848 removeTask(task, false); 2849 } 2850 cleanUpActivityServicesLocked(r); 2851 r.removeUriPermissionsLocked(); 2852 } 2853 2854 /** 2855 * Perform clean-up of service connections in an activity record. 2856 */ 2857 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2858 // Throw away any services that have been bound by this activity. 2859 if (r.connections != null) { 2860 Iterator<ConnectionRecord> it = r.connections.iterator(); 2861 while (it.hasNext()) { 2862 ConnectionRecord c = it.next(); 2863 mService.mServices.removeConnectionLocked(c, null, r); 2864 } 2865 r.connections = null; 2866 } 2867 } 2868 2869 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2870 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2871 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2872 mHandler.sendMessage(msg); 2873 } 2874 2875 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2876 boolean lastIsOpaque = false; 2877 boolean activityRemoved = false; 2878 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2879 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2880 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2881 final ActivityRecord r = activities.get(activityNdx); 2882 if (r.finishing) { 2883 continue; 2884 } 2885 if (r.fullscreen) { 2886 lastIsOpaque = true; 2887 } 2888 if (owner != null && r.app != owner) { 2889 continue; 2890 } 2891 if (!lastIsOpaque) { 2892 continue; 2893 } 2894 // We can destroy this one if we have its icicle saved and 2895 // it is not in the process of pausing/stopping/finishing. 2896 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2897 && r.haveState && !r.visible && r.stopped 2898 && r.state != ActivityState.DESTROYING 2899 && r.state != ActivityState.DESTROYED) { 2900 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2901 + " resumed=" + mResumedActivity 2902 + " pausing=" + mPausingActivity); 2903 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2904 activityRemoved = true; 2905 } 2906 } 2907 } 2908 } 2909 if (activityRemoved) { 2910 mStackSupervisor.resumeTopActivitiesLocked(); 2911 } 2912 } 2913 2914 /** 2915 * Destroy the current CLIENT SIDE instance of an activity. This may be 2916 * called both when actually finishing an activity, or when performing 2917 * a configuration switch where we destroy the current client-side object 2918 * but then create a new client-side object for this same HistoryRecord. 2919 */ 2920 final boolean destroyActivityLocked(ActivityRecord r, 2921 boolean removeFromApp, boolean oomAdj, String reason) { 2922 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2923 TAG, "Removing activity from " + reason + ": token=" + r 2924 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2925 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2926 r.userId, System.identityHashCode(r), 2927 r.task.taskId, r.shortComponentName, reason); 2928 2929 boolean removedFromHistory = false; 2930 2931 cleanUpActivityLocked(r, false, false); 2932 2933 final boolean hadApp = r.app != null; 2934 2935 if (hadApp) { 2936 if (removeFromApp) { 2937 r.app.activities.remove(r); 2938 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2939 mService.mHeavyWeightProcess = null; 2940 mService.mHandler.sendEmptyMessage( 2941 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2942 } 2943 if (r.app.activities.isEmpty()) { 2944 // No longer have activities, so update LRU list and oom adj. 2945 mService.updateLruProcessLocked(r.app, false, null); 2946 mService.updateOomAdjLocked(); 2947 } 2948 } 2949 2950 boolean skipDestroy = false; 2951 2952 try { 2953 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2954 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2955 r.configChangeFlags); 2956 } catch (Exception e) { 2957 // We can just ignore exceptions here... if the process 2958 // has crashed, our death notification will clean things 2959 // up. 2960 //Slog.w(TAG, "Exception thrown during finish", e); 2961 if (r.finishing) { 2962 removeActivityFromHistoryLocked(r); 2963 removedFromHistory = true; 2964 skipDestroy = true; 2965 } 2966 } 2967 2968 r.nowVisible = false; 2969 2970 // If the activity is finishing, we need to wait on removing it 2971 // from the list to give it a chance to do its cleanup. During 2972 // that time it may make calls back with its token so we need to 2973 // be able to find it on the list and so we don't want to remove 2974 // it from the list yet. Otherwise, we can just immediately put 2975 // it in the destroyed state since we are not removing it from the 2976 // list. 2977 if (r.finishing && !skipDestroy) { 2978 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2979 + " (destroy requested)"); 2980 r.state = ActivityState.DESTROYING; 2981 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2982 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2983 } else { 2984 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2985 r.state = ActivityState.DESTROYED; 2986 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2987 r.app = null; 2988 } 2989 } else { 2990 // remove this record from the history. 2991 if (r.finishing) { 2992 removeActivityFromHistoryLocked(r); 2993 removedFromHistory = true; 2994 } else { 2995 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2996 r.state = ActivityState.DESTROYED; 2997 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2998 r.app = null; 2999 } 3000 } 3001 3002 r.configChangeFlags = 0; 3003 3004 if (!mLRUActivities.remove(r) && hadApp) { 3005 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3006 } 3007 3008 return removedFromHistory; 3009 } 3010 3011 final void activityDestroyedLocked(IBinder token) { 3012 final long origId = Binder.clearCallingIdentity(); 3013 try { 3014 ActivityRecord r = ActivityRecord.forToken(token); 3015 if (r != null) { 3016 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3017 } 3018 3019 if (isInStackLocked(token) != null) { 3020 if (r.state == ActivityState.DESTROYING) { 3021 cleanUpActivityLocked(r, true, false); 3022 removeActivityFromHistoryLocked(r); 3023 } 3024 } 3025 mStackSupervisor.resumeTopActivitiesLocked(); 3026 } finally { 3027 Binder.restoreCallingIdentity(origId); 3028 } 3029 } 3030 3031 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3032 ProcessRecord app, String listName) { 3033 int i = list.size(); 3034 if (DEBUG_CLEANUP) Slog.v( 3035 TAG, "Removing app " + app + " from list " + listName 3036 + " with " + i + " entries"); 3037 while (i > 0) { 3038 i--; 3039 ActivityRecord r = list.get(i); 3040 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3041 if (r.app == app) { 3042 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3043 list.remove(i); 3044 removeTimeoutsForActivityLocked(r); 3045 } 3046 } 3047 } 3048 3049 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3050 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3051 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3052 "mStoppingActivities"); 3053 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3054 "mGoingToSleepActivities"); 3055 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3056 "mWaitingVisibleActivities"); 3057 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3058 "mFinishingActivities"); 3059 3060 boolean hasVisibleActivities = false; 3061 3062 // Clean out the history list. 3063 int i = numActivities(); 3064 if (DEBUG_CLEANUP) Slog.v( 3065 TAG, "Removing app " + app + " from history with " + i + " entries"); 3066 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3067 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3068 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3069 final ActivityRecord r = activities.get(activityNdx); 3070 --i; 3071 if (DEBUG_CLEANUP) Slog.v( 3072 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3073 if (r.app == app) { 3074 boolean remove; 3075 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3076 // Don't currently have state for the activity, or 3077 // it is finishing -- always remove it. 3078 remove = true; 3079 } else if (r.launchCount > 2 && 3080 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3081 // We have launched this activity too many times since it was 3082 // able to run, so give up and remove it. 3083 remove = true; 3084 } else { 3085 // The process may be gone, but the activity lives on! 3086 remove = false; 3087 } 3088 if (remove) { 3089 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3090 RuntimeException here = new RuntimeException("here"); 3091 here.fillInStackTrace(); 3092 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3093 + ": haveState=" + r.haveState 3094 + " stateNotNeeded=" + r.stateNotNeeded 3095 + " finishing=" + r.finishing 3096 + " state=" + r.state, here); 3097 } 3098 if (!r.finishing) { 3099 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3100 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3101 r.userId, System.identityHashCode(r), 3102 r.task.taskId, r.shortComponentName, 3103 "proc died without state saved"); 3104 if (r.state == ActivityState.RESUMED) { 3105 mService.updateUsageStats(r, false); 3106 } 3107 } 3108 removeActivityFromHistoryLocked(r); 3109 3110 } else { 3111 // We have the current state for this activity, so 3112 // it can be restarted later when needed. 3113 if (localLOGV) Slog.v( 3114 TAG, "Keeping entry, setting app to null"); 3115 if (r.visible) { 3116 hasVisibleActivities = true; 3117 } 3118 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3119 + r); 3120 r.app = null; 3121 r.nowVisible = false; 3122 if (!r.haveState) { 3123 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3124 "App died, clearing saved state of " + r); 3125 r.icicle = null; 3126 } 3127 } 3128 3129 cleanUpActivityLocked(r, true, true); 3130 } 3131 } 3132 } 3133 3134 return hasVisibleActivities; 3135 } 3136 3137 final void updateTransitLocked(int transit, Bundle options) { 3138 if (options != null) { 3139 ActivityRecord r = topRunningActivityLocked(null); 3140 if (r != null && r.state != ActivityState.RESUMED) { 3141 r.updateOptionsLocked(options); 3142 } else { 3143 ActivityOptions.abort(options); 3144 } 3145 } 3146 mWindowManager.prepareAppTransition(transit, false); 3147 } 3148 3149 void moveHomeTaskToTop() { 3150 final int top = mTaskHistory.size() - 1; 3151 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3152 final TaskRecord task = mTaskHistory.get(taskNdx); 3153 if (task.isHomeTask()) { 3154 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3155 mTaskHistory.remove(taskNdx); 3156 mTaskHistory.add(top, task); 3157 mWindowManager.moveTaskToTop(task.taskId); 3158 return; 3159 } 3160 } 3161 } 3162 3163 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3164 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3165 3166 final int numTasks = mTaskHistory.size(); 3167 final int index = mTaskHistory.indexOf(tr); 3168 if (numTasks == 0 || index < 0) { 3169 // nothing to do! 3170 if (reason != null && 3171 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3172 ActivityOptions.abort(options); 3173 } else { 3174 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3175 } 3176 return; 3177 } 3178 3179 moveToFront(); 3180 3181 // Shift all activities with this task up to the top 3182 // of the stack, keeping them in the same internal order. 3183 insertTaskAtTop(tr); 3184 3185 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3186 if (reason != null && 3187 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3188 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3189 ActivityRecord r = topRunningActivityLocked(null); 3190 if (r != null) { 3191 mNoAnimActivities.add(r); 3192 } 3193 ActivityOptions.abort(options); 3194 } else { 3195 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3196 } 3197 3198 mWindowManager.moveTaskToTop(tr.taskId); 3199 3200 mStackSupervisor.resumeTopActivitiesLocked(); 3201 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3202 3203 if (VALIDATE_TOKENS) { 3204 validateAppTokensLocked(); 3205 } 3206 } 3207 3208 /** 3209 * Worker method for rearranging history stack. Implements the function of moving all 3210 * activities for a specific task (gathering them if disjoint) into a single group at the 3211 * bottom of the stack. 3212 * 3213 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3214 * to premeptively cancel the move. 3215 * 3216 * @param taskId The taskId to collect and move to the bottom. 3217 * @return Returns true if the move completed, false if not. 3218 */ 3219 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3220 final TaskRecord tr = taskForIdLocked(taskId); 3221 if (tr == null) { 3222 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3223 return false; 3224 } 3225 3226 Slog.i(TAG, "moveTaskToBack: " + tr); 3227 3228 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3229 3230 // If we have a watcher, preflight the move before committing to it. First check 3231 // for *other* available tasks, but if none are available, then try again allowing the 3232 // current task to be selected. 3233 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3234 ActivityRecord next = topRunningActivityLocked(null, taskId); 3235 if (next == null) { 3236 next = topRunningActivityLocked(null, 0); 3237 } 3238 if (next != null) { 3239 // ask watcher if this is allowed 3240 boolean moveOK = true; 3241 try { 3242 moveOK = mService.mController.activityResuming(next.packageName); 3243 } catch (RemoteException e) { 3244 mService.mController = null; 3245 Watchdog.getInstance().setActivityController(null); 3246 } 3247 if (!moveOK) { 3248 return false; 3249 } 3250 } 3251 } 3252 3253 if (DEBUG_TRANSITION) Slog.v(TAG, 3254 "Prepare to back transition: task=" + taskId); 3255 3256 mTaskHistory.remove(tr); 3257 mTaskHistory.add(0, tr); 3258 3259 // There is an assumption that moving a task to the back moves it behind the home activity. 3260 // We make sure here that some activity in the stack will launch home. 3261 ActivityRecord lastActivity = null; 3262 int numTasks = mTaskHistory.size(); 3263 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3264 final TaskRecord task = mTaskHistory.get(taskNdx); 3265 if (task.mOnTopOfHome) { 3266 break; 3267 } 3268 if (taskNdx == 1) { 3269 // Set the last task before tr to go to home. 3270 task.mOnTopOfHome = true; 3271 } 3272 } 3273 3274 if (reason != null && 3275 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3276 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3277 ActivityRecord r = topRunningActivityLocked(null); 3278 if (r != null) { 3279 mNoAnimActivities.add(r); 3280 } 3281 } else { 3282 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3283 } 3284 mWindowManager.moveTaskToBottom(taskId); 3285 3286 if (VALIDATE_TOKENS) { 3287 validateAppTokensLocked(); 3288 } 3289 3290 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3291 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3292 tr.mOnTopOfHome = false; 3293 return mStackSupervisor.resumeHomeActivity(null); 3294 } 3295 3296 mStackSupervisor.resumeTopActivitiesLocked(); 3297 return true; 3298 } 3299 3300 static final void logStartActivity(int tag, ActivityRecord r, 3301 TaskRecord task) { 3302 final Uri data = r.intent.getData(); 3303 final String strData = data != null ? data.toSafeString() : null; 3304 3305 EventLog.writeEvent(tag, 3306 r.userId, System.identityHashCode(r), task.taskId, 3307 r.shortComponentName, r.intent.getAction(), 3308 r.intent.getType(), strData, r.intent.getFlags()); 3309 } 3310 3311 /** 3312 * Make sure the given activity matches the current configuration. Returns 3313 * false if the activity had to be destroyed. Returns true if the 3314 * configuration is the same, or the activity will remain running as-is 3315 * for whatever reason. Ensures the HistoryRecord is updated with the 3316 * correct configuration and all other bookkeeping is handled. 3317 */ 3318 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3319 int globalChanges) { 3320 if (mConfigWillChange) { 3321 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3322 "Skipping config check (will change): " + r); 3323 return true; 3324 } 3325 3326 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3327 "Ensuring correct configuration: " + r); 3328 3329 // Short circuit: if the two configurations are the exact same 3330 // object (the common case), then there is nothing to do. 3331 Configuration newConfig = mService.mConfiguration; 3332 if (r.configuration == newConfig && !r.forceNewConfig) { 3333 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3334 "Configuration unchanged in " + r); 3335 return true; 3336 } 3337 3338 // We don't worry about activities that are finishing. 3339 if (r.finishing) { 3340 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3341 "Configuration doesn't matter in finishing " + r); 3342 r.stopFreezingScreenLocked(false); 3343 return true; 3344 } 3345 3346 // Okay we now are going to make this activity have the new config. 3347 // But then we need to figure out how it needs to deal with that. 3348 Configuration oldConfig = r.configuration; 3349 r.configuration = newConfig; 3350 3351 // Determine what has changed. May be nothing, if this is a config 3352 // that has come back from the app after going idle. In that case 3353 // we just want to leave the official config object now in the 3354 // activity and do nothing else. 3355 final int changes = oldConfig.diff(newConfig); 3356 if (changes == 0 && !r.forceNewConfig) { 3357 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3358 "Configuration no differences in " + r); 3359 return true; 3360 } 3361 3362 // If the activity isn't currently running, just leave the new 3363 // configuration and it will pick that up next time it starts. 3364 if (r.app == null || r.app.thread == null) { 3365 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3366 "Configuration doesn't matter not running " + r); 3367 r.stopFreezingScreenLocked(false); 3368 r.forceNewConfig = false; 3369 return true; 3370 } 3371 3372 // Figure out how to handle the changes between the configurations. 3373 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3374 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3375 + Integer.toHexString(changes) + ", handles=0x" 3376 + Integer.toHexString(r.info.getRealConfigChanged()) 3377 + ", newConfig=" + newConfig); 3378 } 3379 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3380 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3381 r.configChangeFlags |= changes; 3382 r.startFreezingScreenLocked(r.app, globalChanges); 3383 r.forceNewConfig = false; 3384 if (r.app == null || r.app.thread == null) { 3385 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3386 "Config is destroying non-running " + r); 3387 destroyActivityLocked(r, true, false, "config"); 3388 } else if (r.state == ActivityState.PAUSING) { 3389 // A little annoying: we are waiting for this activity to 3390 // finish pausing. Let's not do anything now, but just 3391 // flag that it needs to be restarted when done pausing. 3392 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3393 "Config is skipping already pausing " + r); 3394 r.configDestroy = true; 3395 return true; 3396 } else if (r.state == ActivityState.RESUMED) { 3397 // Try to optimize this case: the configuration is changing 3398 // and we need to restart the top, resumed activity. 3399 // Instead of doing the normal handshaking, just say 3400 // "restart!". 3401 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3402 "Config is relaunching resumed " + r); 3403 relaunchActivityLocked(r, r.configChangeFlags, true); 3404 r.configChangeFlags = 0; 3405 } else { 3406 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3407 "Config is relaunching non-resumed " + r); 3408 relaunchActivityLocked(r, r.configChangeFlags, false); 3409 r.configChangeFlags = 0; 3410 } 3411 3412 // All done... tell the caller we weren't able to keep this 3413 // activity around. 3414 return false; 3415 } 3416 3417 // Default case: the activity can handle this new configuration, so 3418 // hand it over. Note that we don't need to give it the new 3419 // configuration, since we always send configuration changes to all 3420 // process when they happen so it can just use whatever configuration 3421 // it last got. 3422 if (r.app != null && r.app.thread != null) { 3423 try { 3424 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3425 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3426 } catch (RemoteException e) { 3427 // If process died, whatever. 3428 } 3429 } 3430 r.stopFreezingScreenLocked(false); 3431 3432 return true; 3433 } 3434 3435 private boolean relaunchActivityLocked(ActivityRecord r, 3436 int changes, boolean andResume) { 3437 List<ResultInfo> results = null; 3438 List<Intent> newIntents = null; 3439 if (andResume) { 3440 results = r.results; 3441 newIntents = r.newIntents; 3442 } 3443 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3444 + " with results=" + results + " newIntents=" + newIntents 3445 + " andResume=" + andResume); 3446 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3447 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3448 r.task.taskId, r.shortComponentName); 3449 3450 r.startFreezingScreenLocked(r.app, 0); 3451 3452 mStackSupervisor.removeChildActivityContainers(r); 3453 3454 try { 3455 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3456 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3457 + r); 3458 r.forceNewConfig = false; 3459 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3460 changes, !andResume, new Configuration(mService.mConfiguration)); 3461 // Note: don't need to call pauseIfSleepingLocked() here, because 3462 // the caller will only pass in 'andResume' if this activity is 3463 // currently resumed, which implies we aren't sleeping. 3464 } catch (RemoteException e) { 3465 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3466 } 3467 3468 if (andResume) { 3469 r.results = null; 3470 r.newIntents = null; 3471 r.state = ActivityState.RESUMED; 3472 } else { 3473 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3474 r.state = ActivityState.PAUSED; 3475 } 3476 3477 return true; 3478 } 3479 3480 boolean willActivityBeVisibleLocked(IBinder token) { 3481 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3482 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3483 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3484 final ActivityRecord r = activities.get(activityNdx); 3485 if (r.appToken == token) { 3486 return true; 3487 } 3488 if (r.fullscreen && !r.finishing) { 3489 return false; 3490 } 3491 } 3492 } 3493 final ActivityRecord r = ActivityRecord.forToken(token); 3494 if (r == null) { 3495 return false; 3496 } 3497 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3498 + " would have returned true for r=" + r); 3499 return !r.finishing; 3500 } 3501 3502 void closeSystemDialogsLocked() { 3503 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3504 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3505 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3506 final ActivityRecord r = activities.get(activityNdx); 3507 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3508 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3509 } 3510 } 3511 } 3512 } 3513 3514 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3515 boolean didSomething = false; 3516 TaskRecord lastTask = null; 3517 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3518 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3519 int numActivities = activities.size(); 3520 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3521 ActivityRecord r = activities.get(activityNdx); 3522 final boolean samePackage = r.packageName.equals(name) 3523 || (name == null && r.userId == userId); 3524 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3525 && (samePackage || r.task == lastTask) 3526 && (r.app == null || evenPersistent || !r.app.persistent)) { 3527 if (!doit) { 3528 if (r.finishing) { 3529 // If this activity is just finishing, then it is not 3530 // interesting as far as something to stop. 3531 continue; 3532 } 3533 return true; 3534 } 3535 didSomething = true; 3536 Slog.i(TAG, " Force finishing activity " + r); 3537 if (samePackage) { 3538 if (r.app != null) { 3539 r.app.removed = true; 3540 } 3541 r.app = null; 3542 } 3543 lastTask = r.task; 3544 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3545 true)) { 3546 // r has been deleted from mActivities, accommodate. 3547 --numActivities; 3548 --activityNdx; 3549 } 3550 } 3551 } 3552 } 3553 return didSomething; 3554 } 3555 3556 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3557 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3558 final TaskRecord task = mTaskHistory.get(taskNdx); 3559 ActivityRecord r = null; 3560 ActivityRecord top = null; 3561 int numActivities = 0; 3562 int numRunning = 0; 3563 final ArrayList<ActivityRecord> activities = task.mActivities; 3564 if (activities.isEmpty()) { 3565 continue; 3566 } 3567 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3568 continue; 3569 } 3570 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3571 r = activities.get(activityNdx); 3572 3573 // Initialize state for next task if needed. 3574 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3575 top = r; 3576 numActivities = numRunning = 0; 3577 } 3578 3579 // Add 'r' into the current task. 3580 numActivities++; 3581 if (r.app != null && r.app.thread != null) { 3582 numRunning++; 3583 } 3584 3585 if (localLOGV) Slog.v( 3586 TAG, r.intent.getComponent().flattenToShortString() 3587 + ": task=" + r.task); 3588 } 3589 3590 RunningTaskInfo ci = new RunningTaskInfo(); 3591 ci.id = task.taskId; 3592 ci.baseActivity = r.intent.getComponent(); 3593 ci.topActivity = top.intent.getComponent(); 3594 ci.lastActiveTime = task.lastActiveTime; 3595 3596 if (top.thumbHolder != null) { 3597 ci.description = top.thumbHolder.lastDescription; 3598 } 3599 ci.numActivities = numActivities; 3600 ci.numRunning = numRunning; 3601 //System.out.println( 3602 // "#" + maxNum + ": " + " descr=" + ci.description); 3603 list.add(ci); 3604 } 3605 } 3606 3607 public void unhandledBackLocked() { 3608 final int top = mTaskHistory.size() - 1; 3609 if (DEBUG_SWITCH) Slog.d( 3610 TAG, "Performing unhandledBack(): top activity at " + top); 3611 if (top >= 0) { 3612 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3613 int activityTop = activities.size() - 1; 3614 if (activityTop > 0) { 3615 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3616 "unhandled-back", true); 3617 } 3618 } 3619 } 3620 3621 /** 3622 * Reset local parameters because an app's activity died. 3623 * @param app The app of the activity that died. 3624 * @return result from removeHistoryRecordsForAppLocked. 3625 */ 3626 boolean handleAppDiedLocked(ProcessRecord app) { 3627 if (mPausingActivity != null && mPausingActivity.app == app) { 3628 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3629 "App died while pausing: " + mPausingActivity); 3630 mPausingActivity = null; 3631 } 3632 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3633 mLastPausedActivity = null; 3634 mLastNoHistoryActivity = null; 3635 } 3636 3637 return removeHistoryRecordsForAppLocked(app); 3638 } 3639 3640 void handleAppCrashLocked(ProcessRecord app) { 3641 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3642 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3643 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3644 final ActivityRecord r = activities.get(activityNdx); 3645 if (r.app == app) { 3646 Slog.w(TAG, " Force finishing activity " 3647 + r.intent.getComponent().flattenToShortString()); 3648 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3649 } 3650 } 3651 } 3652 } 3653 3654 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3655 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3656 boolean printed = false; 3657 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3658 final TaskRecord task = mTaskHistory.get(taskNdx); 3659 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3660 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3661 dumpClient, dumpPackage, needSep, header, 3662 " Task id #" + task.taskId); 3663 if (printed) { 3664 header = null; 3665 } 3666 } 3667 return printed; 3668 } 3669 3670 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3671 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3672 3673 if ("all".equals(name)) { 3674 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3675 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3676 } 3677 } else if ("top".equals(name)) { 3678 final int top = mTaskHistory.size() - 1; 3679 if (top >= 0) { 3680 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3681 int listTop = list.size() - 1; 3682 if (listTop >= 0) { 3683 activities.add(list.get(listTop)); 3684 } 3685 } 3686 } else { 3687 ItemMatcher matcher = new ItemMatcher(); 3688 matcher.build(name); 3689 3690 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3691 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3692 if (matcher.match(r1, r1.intent.getComponent())) { 3693 activities.add(r1); 3694 } 3695 } 3696 } 3697 } 3698 3699 return activities; 3700 } 3701 3702 ActivityRecord restartPackage(String packageName) { 3703 ActivityRecord starting = topRunningActivityLocked(null); 3704 3705 // All activities that came from the package must be 3706 // restarted as if there was a config change. 3707 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3708 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3709 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3710 final ActivityRecord a = activities.get(activityNdx); 3711 if (a.info.packageName.equals(packageName)) { 3712 a.forceNewConfig = true; 3713 if (starting != null && a == starting && a.visible) { 3714 a.startFreezingScreenLocked(starting.app, 3715 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3716 } 3717 } 3718 } 3719 } 3720 3721 return starting; 3722 } 3723 3724 void removeTask(TaskRecord task, boolean moving) { 3725 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3726 mWindowManager.removeTask(task.taskId); 3727 final ActivityRecord r = mResumedActivity; 3728 if (r != null && r.task == task) { 3729 mResumedActivity = null; 3730 } 3731 3732 final int taskNdx = mTaskHistory.indexOf(task); 3733 final int topTaskNdx = mTaskHistory.size() - 1; 3734 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3735 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3736 } 3737 mTaskHistory.remove(task); 3738 if (!moving && task.voiceSession != null) { 3739 // This task was a voice interaction, so it should not remain on the 3740 // recent tasks list. 3741 try { 3742 task.voiceSession.taskFinished(task.intent, task.taskId); 3743 } catch (RemoteException e) { 3744 } 3745 mService.mRecentTasks.remove(task); 3746 } 3747 3748 if (mTaskHistory.isEmpty()) { 3749 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3750 if (isOnHomeDisplay()) { 3751 mStackSupervisor.moveHomeStack(!isHomeStack()); 3752 } 3753 if (mStacks != null) { 3754 mStacks.remove(this); 3755 mStacks.add(0, this); 3756 } 3757 } 3758 } 3759 3760 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3761 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3762 boolean toTop) { 3763 TaskRecord task = new TaskRecord(taskId, info, intent, voiceSession, voiceInteractor); 3764 addTask(task, toTop, false); 3765 return task; 3766 } 3767 3768 ArrayList<TaskRecord> getAllTasks() { 3769 return new ArrayList<TaskRecord>(mTaskHistory); 3770 } 3771 3772 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3773 task.stack = this; 3774 if (toTop) { 3775 insertTaskAtTop(task); 3776 } else { 3777 mTaskHistory.add(0, task); 3778 } 3779 if (!moving && task.voiceSession != null) { 3780 try { 3781 task.voiceSession.taskStarted(task.intent, task.taskId); 3782 } catch (RemoteException e) { 3783 } 3784 } 3785 } 3786 3787 public int getStackId() { 3788 return mStackId; 3789 } 3790 3791 @Override 3792 public String toString() { 3793 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3794 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3795 } 3796} 3797