ActivityStack.java revision 09233289624a85093b1d99e4a6a149bf09059d8d
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.RemoteException; 74import android.os.SystemClock; 75import android.os.Trace; 76import android.os.UserHandle; 77import android.util.EventLog; 78import android.util.Slog; 79import android.view.Display; 80 81import java.io.FileDescriptor; 82import java.io.PrintWriter; 83import java.lang.ref.WeakReference; 84import java.util.ArrayList; 85import java.util.Iterator; 86import java.util.List; 87import java.util.Objects; 88 89/** 90 * State and management of a single stack of activities. 91 */ 92final class ActivityStack { 93 94 // Ticks during which we check progress while waiting for an app to launch. 95 static final int LAUNCH_TICK = 500; 96 97 // How long we wait until giving up on the last activity to pause. This 98 // is short because it directly impacts the responsiveness of starting the 99 // next activity. 100 static final int PAUSE_TIMEOUT = 500; 101 102 // How long we wait for the activity to tell us it has stopped before 103 // giving up. This is a good amount of time because we really need this 104 // from the application in order to get its saved state. 105 static final int STOP_TIMEOUT = 10*1000; 106 107 // How long we wait until giving up on an activity telling us it has 108 // finished destroying itself. 109 static final int DESTROY_TIMEOUT = 10*1000; 110 111 // How long until we reset a task when the user returns to it. Currently 112 // disabled. 113 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 114 115 // How long between activity launches that we consider safe to not warn 116 // the user about an unexpected activity being launched on top. 117 static final long START_WARN_TIME = 5*1000; 118 119 // Set to false to disable the preview that is shown while a new activity 120 // is being started. 121 static final boolean SHOW_APP_STARTING_PREVIEW = true; 122 123 // How long to wait for all background Activities to redraw following a call to 124 // convertToTranslucent(). 125 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 126 127 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 128 129 enum ActivityState { 130 INITIALIZING, 131 RESUMED, 132 PAUSING, 133 PAUSED, 134 STOPPING, 135 STOPPED, 136 FINISHING, 137 DESTROYING, 138 DESTROYED 139 } 140 141 final ActivityManagerService mService; 142 final WindowManagerService mWindowManager; 143 144 /** 145 * The back history of all previous (and possibly still 146 * running) activities. It contains #TaskRecord objects. 147 */ 148 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 149 150 /** 151 * Used for validating app tokens with window manager. 152 */ 153 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 154 155 /** 156 * List of running activities, sorted by recent usage. 157 * The first entry in the list is the least recently used. 158 * It contains HistoryRecord objects. 159 */ 160 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 161 162 /** 163 * Animations that for the current transition have requested not to 164 * be considered for the transition animation. 165 */ 166 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * When we are in the process of pausing an activity, before starting the 170 * next one, this variable holds the activity that is currently being paused. 171 */ 172 ActivityRecord mPausingActivity = null; 173 174 /** 175 * This is the last activity that we put into the paused state. This is 176 * used to determine if we need to do an activity transition while sleeping, 177 * when we normally hold the top activity paused. 178 */ 179 ActivityRecord mLastPausedActivity = null; 180 181 /** 182 * Activities that specify No History must be removed once the user navigates away from them. 183 * If the device goes to sleep with such an activity in the paused state then we save it here 184 * and finish it later if another activity replaces it on wakeup. 185 */ 186 ActivityRecord mLastNoHistoryActivity = null; 187 188 /** 189 * Current activity that is resumed, or null if there is none. 190 */ 191 ActivityRecord mResumedActivity = null; 192 193 /** 194 * This is the last activity that has been started. It is only used to 195 * identify when multiple activities are started at once so that the user 196 * can be warned they may not be in the activity they think they are. 197 */ 198 ActivityRecord mLastStartedActivity = null; 199 200 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 201 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 202 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 203 // Activity in mTranslucentActivityWaiting is notified via 204 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 205 // background activity being drawn then the same call will be made with a true value. 206 ActivityRecord mTranslucentActivityWaiting = null; 207 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 208 new ArrayList<ActivityRecord>(); 209 210 /** 211 * Set when we know we are going to be calling updateConfiguration() 212 * soon, so want to skip intermediate config checks. 213 */ 214 boolean mConfigWillChange; 215 216 long mLaunchStartTime = 0; 217 long mFullyDrawnStartTime = 0; 218 219 /** 220 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 221 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 222 */ 223 private ActivityRecord mLastScreenshotActivity = null; 224 private Bitmap mLastScreenshotBitmap = null; 225 226 int mThumbnailWidth = -1; 227 int mThumbnailHeight = -1; 228 229 int mCurrentUser; 230 231 final int mStackId; 232 final ActivityContainer mActivityContainer; 233 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 234 ArrayList<ActivityStack> mStacks; 235 /** The attached Display's unique identifier, or -1 if detached */ 236 int mDisplayId; 237 238 /** Run all ActivityStacks through this */ 239 final ActivityStackSupervisor mStackSupervisor; 240 241 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 242 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 243 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 244 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 245 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 246 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 247 248 static class ScheduleDestroyArgs { 249 final ProcessRecord mOwner; 250 final boolean mOomAdj; 251 final String mReason; 252 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 253 mOwner = owner; 254 mOomAdj = oomAdj; 255 mReason = reason; 256 } 257 } 258 259 final Handler mHandler; 260 261 final class ActivityStackHandler extends Handler { 262 //public Handler() { 263 // if (localLOGV) Slog.v(TAG, "Handler started!"); 264 //} 265 ActivityStackHandler(Looper looper) { 266 super(looper); 267 } 268 269 @Override 270 public void handleMessage(Message msg) { 271 switch (msg.what) { 272 case PAUSE_TIMEOUT_MSG: { 273 ActivityRecord r = (ActivityRecord)msg.obj; 274 // We don't at this point know if the activity is fullscreen, 275 // so we need to be conservative and assume it isn't. 276 Slog.w(TAG, "Activity pause timeout for " + r); 277 synchronized (mService) { 278 if (r.app != null) { 279 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 280 } 281 activityPausedLocked(r.appToken, true); 282 } 283 } break; 284 case LAUNCH_TICK_MSG: { 285 ActivityRecord r = (ActivityRecord)msg.obj; 286 synchronized (mService) { 287 if (r.continueLaunchTickingLocked()) { 288 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 289 } 290 } 291 } break; 292 case DESTROY_TIMEOUT_MSG: { 293 ActivityRecord r = (ActivityRecord)msg.obj; 294 // We don't at this point know if the activity is fullscreen, 295 // so we need to be conservative and assume it isn't. 296 Slog.w(TAG, "Activity destroy timeout for " + r); 297 synchronized (mService) { 298 activityDestroyedLocked(r != null ? r.appToken : null); 299 } 300 } break; 301 case STOP_TIMEOUT_MSG: { 302 ActivityRecord r = (ActivityRecord)msg.obj; 303 // We don't at this point know if the activity is fullscreen, 304 // so we need to be conservative and assume it isn't. 305 Slog.w(TAG, "Activity stop timeout for " + r); 306 synchronized (mService) { 307 if (r.isInHistory()) { 308 activityStoppedLocked(r, null, null, null); 309 } 310 } 311 } break; 312 case DESTROY_ACTIVITIES_MSG: { 313 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 314 synchronized (mService) { 315 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 316 } 317 } break; 318 case TRANSLUCENT_TIMEOUT_MSG: { 319 synchronized (mService) { 320 notifyActivityDrawnLocked(null); 321 } 322 } break; 323 } 324 } 325 } 326 327 int numActivities() { 328 int count = 0; 329 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 330 count += mTaskHistory.get(taskNdx).mActivities.size(); 331 } 332 return count; 333 } 334 335 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 336 mActivityContainer = activityContainer; 337 mStackSupervisor = activityContainer.getOuter(); 338 mService = mStackSupervisor.mService; 339 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 340 mWindowManager = mService.mWindowManager; 341 mStackId = activityContainer.mStackId; 342 mCurrentUser = mService.mCurrentUserId; 343 } 344 345 /** 346 * Checks whether the userid is a profile of the current user. 347 */ 348 private boolean isCurrentProfileLocked(int userId) { 349 if (userId == mCurrentUser) return true; 350 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 351 if (mService.mCurrentProfileIds[i] == userId) return true; 352 } 353 return false; 354 } 355 356 boolean okToShowLocked(ActivityRecord r) { 357 return isCurrentProfileLocked(r.userId) 358 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 359 } 360 361 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 362 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 363 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 364 if (r != null) { 365 return r; 366 } 367 } 368 return null; 369 } 370 371 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 372 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 373 final TaskRecord task = mTaskHistory.get(taskNdx); 374 final ArrayList<ActivityRecord> activities = task.mActivities; 375 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 376 ActivityRecord r = activities.get(activityNdx); 377 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 378 return r; 379 } 380 } 381 } 382 return null; 383 } 384 385 /** 386 * This is a simplified version of topRunningActivityLocked that provides a number of 387 * optional skip-over modes. It is intended for use with the ActivityController hook only. 388 * 389 * @param token If non-null, any history records matching this token will be skipped. 390 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 391 * 392 * @return Returns the HistoryRecord of the next activity on the stack. 393 */ 394 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 395 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 396 TaskRecord task = mTaskHistory.get(taskNdx); 397 if (task.taskId == taskId) { 398 continue; 399 } 400 ArrayList<ActivityRecord> activities = task.mActivities; 401 for (int i = activities.size() - 1; i >= 0; --i) { 402 final ActivityRecord r = activities.get(i); 403 // Note: the taskId check depends on real taskId fields being non-zero 404 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 405 return r; 406 } 407 } 408 } 409 return null; 410 } 411 412 final ActivityRecord topActivity() { 413 // Iterate to find the first non-empty task stack. Note that this code can 414 // be simplified once we stop storing tasks with empty mActivities lists. 415 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 416 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 417 final int topActivityNdx = activities.size() - 1; 418 if (topActivityNdx >= 0) { 419 return activities.get(topActivityNdx); 420 } 421 } 422 return null; 423 } 424 425 final TaskRecord topTask() { 426 final int size = mTaskHistory.size(); 427 if (size > 0) { 428 return mTaskHistory.get(size - 1); 429 } 430 return null; 431 } 432 433 TaskRecord taskForIdLocked(int id) { 434 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 435 final TaskRecord task = mTaskHistory.get(taskNdx); 436 if (task.taskId == id) { 437 return task; 438 } 439 } 440 return null; 441 } 442 443 ActivityRecord isInStackLocked(IBinder token) { 444 final ActivityRecord r = ActivityRecord.forToken(token); 445 if (r != null) { 446 final TaskRecord task = r.task; 447 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 448 if (task.stack != this) Slog.w(TAG, 449 "Illegal state! task does not point to stack it is in."); 450 return r; 451 } 452 } 453 return null; 454 } 455 456 final boolean updateLRUListLocked(ActivityRecord r) { 457 final boolean hadit = mLRUActivities.remove(r); 458 mLRUActivities.add(r); 459 return hadit; 460 } 461 462 final boolean isHomeStack() { 463 return mStackId == HOME_STACK_ID; 464 } 465 466 final boolean isOnHomeDisplay() { 467 return isAttached() && 468 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 469 } 470 471 final void moveToFront() { 472 if (isAttached()) { 473 if (isOnHomeDisplay()) { 474 mStackSupervisor.moveHomeStack(isHomeStack()); 475 } 476 mStacks.remove(this); 477 mStacks.add(this); 478 } 479 } 480 481 final boolean isAttached() { 482 return mStacks != null; 483 } 484 485 /** 486 * Returns the top activity in any existing task matching the given 487 * Intent. Returns null if no such task is found. 488 */ 489 ActivityRecord findTaskLocked(ActivityRecord target) { 490 Intent intent = target.intent; 491 ActivityInfo info = target.info; 492 ComponentName cls = intent.getComponent(); 493 if (info.targetActivity != null) { 494 cls = new ComponentName(info.packageName, info.targetActivity); 495 } 496 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 497 boolean isDocument = intent != null & intent.isDocument(); 498 // If documentData is non-null then it must match the existing task data. 499 Uri documentData = isDocument ? intent.getData() : null; 500 501 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 502 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 503 final TaskRecord task = mTaskHistory.get(taskNdx); 504 if (task.voiceSession != null) { 505 // We never match voice sessions; those always run independently. 506 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 507 continue; 508 } 509 if (task.userId != userId) { 510 // Looking for a different task. 511 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 512 continue; 513 } 514 final ActivityRecord r = task.getTopActivity(); 515 if (r == null || r.finishing || r.userId != userId || 516 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 517 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 518 continue; 519 } 520 521 final Intent taskIntent = task.intent; 522 final Intent affinityIntent = task.affinityIntent; 523 final boolean taskIsDocument; 524 final Uri taskDocumentData; 525 if (taskIntent != null && taskIntent.isDocument()) { 526 taskIsDocument = true; 527 taskDocumentData = taskIntent.getData(); 528 } else if (affinityIntent != null && affinityIntent.isDocument()) { 529 taskIsDocument = true; 530 taskDocumentData = affinityIntent.getData(); 531 } else { 532 taskIsDocument = false; 533 taskDocumentData = null; 534 } 535 536 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 537 + taskIntent.getComponent().flattenToShortString() 538 + "/aff=" + r.task.affinity + " to new cls=" 539 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 540 if (!isDocument && !taskIsDocument && task.affinity != null) { 541 if (task.affinity.equals(target.taskAffinity)) { 542 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 543 return r; 544 } 545 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 546 Objects.equals(documentData, taskDocumentData)) { 547 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 548 //dump(); 549 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 550 + r.intent); 551 return r; 552 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 553 Objects.equals(documentData, taskDocumentData)) { 554 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 555 //dump(); 556 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 557 + r.intent); 558 return r; 559 } else if (DEBUG_TASKS) { 560 Slog.d(TAG, "Not a match: " + task); 561 } 562 } 563 564 return null; 565 } 566 567 /** 568 * Returns the first activity (starting from the top of the stack) that 569 * is the same as the given activity. Returns null if no such activity 570 * is found. 571 */ 572 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 573 ComponentName cls = intent.getComponent(); 574 if (info.targetActivity != null) { 575 cls = new ComponentName(info.packageName, info.targetActivity); 576 } 577 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 578 579 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 580 TaskRecord task = mTaskHistory.get(taskNdx); 581 if (!isCurrentProfileLocked(task.userId)) { 582 return null; 583 } 584 final ArrayList<ActivityRecord> activities = task.mActivities; 585 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 586 ActivityRecord r = activities.get(activityNdx); 587 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 588 //Slog.i(TAG, "Found matching class!"); 589 //dump(); 590 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 591 return r; 592 } 593 } 594 } 595 596 return null; 597 } 598 599 /* 600 * Move the activities around in the stack to bring a user to the foreground. 601 */ 602 final void switchUserLocked(int userId) { 603 if (mCurrentUser == userId) { 604 return; 605 } 606 mCurrentUser = userId; 607 608 // Move userId's tasks to the top. 609 int index = mTaskHistory.size(); 610 for (int i = 0; i < index; ) { 611 TaskRecord task = mTaskHistory.get(i); 612 if (isCurrentProfileLocked(task.userId)) { 613 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 614 " moving " + task + " to top"); 615 mTaskHistory.remove(i); 616 mTaskHistory.add(task); 617 --index; 618 // Use same value for i. 619 } else { 620 ++i; 621 } 622 } 623 if (VALIDATE_TOKENS) { 624 validateAppTokensLocked(); 625 } 626 } 627 628 void minimalResumeActivityLocked(ActivityRecord r) { 629 r.state = ActivityState.RESUMED; 630 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 631 + " (starting new instance)"); 632 r.stopped = false; 633 mResumedActivity = r; 634 r.task.touchActiveTime(); 635 mService.addRecentTaskLocked(r.task); 636 completeResumeLocked(r); 637 mStackSupervisor.checkReadyForSleepLocked(); 638 setLaunchTime(r); 639 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 640 } 641 642 private void startLaunchTraces() { 643 if (mFullyDrawnStartTime != 0) { 644 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 645 } 646 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 647 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 648 } 649 650 private void stopFullyDrawnTraceIfNeeded() { 651 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 652 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 653 mFullyDrawnStartTime = 0; 654 } 655 } 656 657 void setLaunchTime(ActivityRecord r) { 658 if (r.displayStartTime == 0) { 659 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 660 if (mLaunchStartTime == 0) { 661 startLaunchTraces(); 662 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 663 } 664 } else if (mLaunchStartTime == 0) { 665 startLaunchTraces(); 666 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 667 } 668 } 669 670 void clearLaunchTime(ActivityRecord r) { 671 // Make sure that there is no activity waiting for this to launch. 672 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 673 r.displayStartTime = r.fullyDrawnStartTime = 0; 674 } else { 675 mStackSupervisor.removeTimeoutsForActivityLocked(r); 676 mStackSupervisor.scheduleIdleTimeoutLocked(r); 677 } 678 } 679 680 void awakeFromSleepingLocked() { 681 // Ensure activities are no longer sleeping. 682 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 683 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 684 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 685 activities.get(activityNdx).setSleeping(false); 686 } 687 } 688 } 689 690 /** 691 * @return true if something must be done before going to sleep. 692 */ 693 boolean checkReadyForSleepLocked() { 694 if (mResumedActivity != null) { 695 // Still have something resumed; can't sleep until it is paused. 696 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 697 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 698 startPausingLocked(false, true); 699 return true; 700 } 701 if (mPausingActivity != null) { 702 // Still waiting for something to pause; can't sleep yet. 703 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 704 return true; 705 } 706 707 return false; 708 } 709 710 void goToSleep() { 711 ensureActivitiesVisibleLocked(null, 0); 712 713 // Make sure any stopped but visible activities are now sleeping. 714 // This ensures that the activity's onStop() is called. 715 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 716 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 717 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 718 final ActivityRecord r = activities.get(activityNdx); 719 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 720 r.setSleeping(true); 721 } 722 } 723 } 724 } 725 726 public final Bitmap screenshotActivities(ActivityRecord who) { 727 if (who.noDisplay) { 728 return null; 729 } 730 731 TaskRecord tr = who.task; 732 if (mService.getMostRecentTask() != tr && tr.intent != null && 733 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 734 // If this task is being excluded from recents, we don't want to take 735 // the expense of capturing a thumbnail, since we will never show it. 736 return null; 737 } 738 739 Resources res = mService.mContext.getResources(); 740 int w = mThumbnailWidth; 741 int h = mThumbnailHeight; 742 if (w < 0) { 743 Configuration config = res.getConfiguration(); 744 boolean useAlternateRecents = (config.smallestScreenWidthDp < 600); 745 if (useAlternateRecents) { 746 mThumbnailWidth = w = 747 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 748 mThumbnailHeight = h = 749 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 750 } else { 751 mThumbnailWidth = w = 752 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 753 mThumbnailHeight = h = 754 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 755 } 756 } 757 758 if (w > 0) { 759 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 760 || mLastScreenshotActivity.state == ActivityState.RESUMED 761 || mLastScreenshotBitmap.getWidth() != w 762 || mLastScreenshotBitmap.getHeight() != h) { 763 mLastScreenshotActivity = who; 764 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 765 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 766 } 767 if (mLastScreenshotBitmap != null) { 768 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 769 } 770 } 771 return null; 772 } 773 774 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 775 if (mPausingActivity != null) { 776 Slog.e(TAG, "Trying to pause when pause is already pending for " 777 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 778 } 779 ActivityRecord prev = mResumedActivity; 780 if (prev == null) { 781 Slog.e(TAG, "Trying to pause when nothing is resumed", 782 new RuntimeException("here").fillInStackTrace()); 783 mStackSupervisor.resumeTopActivitiesLocked(); 784 return; 785 } 786 787 if (mActivityContainer.mParentActivity == null) { 788 // Top level stack, not a child. Look for child stacks. 789 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 790 } 791 792 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 793 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 794 mResumedActivity = null; 795 mPausingActivity = prev; 796 mLastPausedActivity = prev; 797 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 798 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 799 prev.state = ActivityState.PAUSING; 800 prev.task.touchActiveTime(); 801 clearLaunchTime(prev); 802 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 803 if (next == null || next.noDisplay || next.task != prev.task) { 804 prev.updateThumbnail(screenshotActivities(prev), null); 805 } 806 stopFullyDrawnTraceIfNeeded(); 807 808 mService.updateCpuStats(); 809 810 if (prev.app != null && prev.app.thread != null) { 811 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 812 try { 813 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 814 prev.userId, System.identityHashCode(prev), 815 prev.shortComponentName); 816 mService.updateUsageStats(prev, false); 817 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 818 userLeaving, prev.configChangeFlags); 819 } catch (Exception e) { 820 // Ignore exception, if process died other code will cleanup. 821 Slog.w(TAG, "Exception thrown during pause", e); 822 mPausingActivity = null; 823 mLastPausedActivity = null; 824 mLastNoHistoryActivity = null; 825 } 826 } else { 827 mPausingActivity = null; 828 mLastPausedActivity = null; 829 mLastNoHistoryActivity = null; 830 } 831 832 // If we are not going to sleep, we want to ensure the device is 833 // awake until the next activity is started. 834 if (!mService.isSleepingOrShuttingDown()) { 835 mStackSupervisor.acquireLaunchWakelock(); 836 } 837 838 if (mPausingActivity != null) { 839 // Have the window manager pause its key dispatching until the new 840 // activity has started. If we're pausing the activity just because 841 // the screen is being turned off and the UI is sleeping, don't interrupt 842 // key dispatch; the same activity will pick it up again on wakeup. 843 if (!uiSleeping) { 844 prev.pauseKeyDispatchingLocked(); 845 } else { 846 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 847 } 848 849 // Schedule a pause timeout in case the app doesn't respond. 850 // We don't give it much time because this directly impacts the 851 // responsiveness seen by the user. 852 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 853 msg.obj = prev; 854 prev.pauseTime = SystemClock.uptimeMillis(); 855 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 856 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 857 } else { 858 // This activity failed to schedule the 859 // pause, so just treat it as being paused now. 860 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 861 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 862 } 863 } 864 865 final void activityPausedLocked(IBinder token, boolean timeout) { 866 if (DEBUG_PAUSE) Slog.v( 867 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 868 869 final ActivityRecord r = isInStackLocked(token); 870 if (r != null) { 871 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 872 if (mPausingActivity == r) { 873 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 874 + (timeout ? " (due to timeout)" : " (pause complete)")); 875 r.state = ActivityState.PAUSED; 876 completePauseLocked(); 877 } else { 878 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 879 r.userId, System.identityHashCode(r), r.shortComponentName, 880 mPausingActivity != null 881 ? mPausingActivity.shortComponentName : "(none)"); 882 } 883 } 884 } 885 886 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 887 CharSequence description) { 888 if (r.state != ActivityState.STOPPING) { 889 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 890 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 891 return; 892 } 893 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 894 if (icicle != null) { 895 // If icicle is null, this is happening due to a timeout, so we 896 // haven't really saved the state. 897 r.icicle = icicle; 898 r.haveState = true; 899 r.launchCount = 0; 900 r.updateThumbnail(thumbnail, description); 901 } 902 if (!r.stopped) { 903 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 904 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 905 r.stopped = true; 906 r.state = ActivityState.STOPPED; 907 if (r.finishing) { 908 r.clearOptionsLocked(); 909 } else { 910 if (r.configDestroy) { 911 destroyActivityLocked(r, true, false, "stop-config"); 912 mStackSupervisor.resumeTopActivitiesLocked(); 913 } else { 914 mStackSupervisor.updatePreviousProcessLocked(r); 915 } 916 } 917 } 918 } 919 920 private void completePauseLocked() { 921 ActivityRecord prev = mPausingActivity; 922 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 923 924 if (prev != null) { 925 if (prev.finishing) { 926 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 927 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 928 } else if (prev.app != null) { 929 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 930 if (prev.waitingVisible) { 931 prev.waitingVisible = false; 932 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 933 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 934 TAG, "Complete pause, no longer waiting: " + prev); 935 } 936 if (prev.configDestroy) { 937 // The previous is being paused because the configuration 938 // is changing, which means it is actually stopping... 939 // To juggle the fact that we are also starting a new 940 // instance right now, we need to first completely stop 941 // the current instance before starting the new one. 942 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 943 destroyActivityLocked(prev, true, false, "pause-config"); 944 } else { 945 mStackSupervisor.mStoppingActivities.add(prev); 946 if (mStackSupervisor.mStoppingActivities.size() > 3 || 947 prev.frontOfTask && mTaskHistory.size() <= 1) { 948 // If we already have a few activities waiting to stop, 949 // then give up on things going idle and start clearing 950 // them out. Or if r is the last of activity of the last task the stack 951 // will be empty and must be cleared immediately. 952 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 953 mStackSupervisor.scheduleIdleLocked(); 954 } else { 955 mStackSupervisor.checkReadyForSleepLocked(); 956 } 957 } 958 } else { 959 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 960 prev = null; 961 } 962 mPausingActivity = null; 963 } 964 965 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 966 if (!mService.isSleepingOrShuttingDown()) { 967 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 968 } else { 969 mStackSupervisor.checkReadyForSleepLocked(); 970 ActivityRecord top = topStack.topRunningActivityLocked(null); 971 if (top == null || (prev != null && top != prev)) { 972 // If there are no more activities available to run, 973 // do resume anyway to start something. Also if the top 974 // activity on the stack is not the just paused activity, 975 // we need to go ahead and resume it to ensure we complete 976 // an in-flight app switch. 977 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 978 } 979 } 980 981 if (prev != null) { 982 prev.resumeKeyDispatchingLocked(); 983 984 if (prev.app != null && prev.cpuTimeAtResume > 0 985 && mService.mBatteryStatsService.isOnBattery()) { 986 long diff; 987 synchronized (mService.mProcessCpuThread) { 988 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 989 - prev.cpuTimeAtResume; 990 } 991 if (diff > 0) { 992 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 993 synchronized (bsi) { 994 BatteryStatsImpl.Uid.Proc ps = 995 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 996 prev.info.packageName); 997 if (ps != null) { 998 ps.addForegroundTimeLocked(diff); 999 } 1000 } 1001 } 1002 } 1003 prev.cpuTimeAtResume = 0; // reset it 1004 } 1005 } 1006 1007 /** 1008 * Once we know that we have asked an application to put an activity in 1009 * the resumed state (either by launching it or explicitly telling it), 1010 * this function updates the rest of our state to match that fact. 1011 */ 1012 private void completeResumeLocked(ActivityRecord next) { 1013 next.idle = false; 1014 next.results = null; 1015 next.newIntents = null; 1016 if (next.nowVisible) { 1017 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1018 mStackSupervisor.dismissKeyguard(); 1019 } 1020 1021 // schedule an idle timeout in case the app doesn't do it for us. 1022 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1023 1024 mStackSupervisor.reportResumedActivityLocked(next); 1025 1026 next.resumeKeyDispatchingLocked(); 1027 mNoAnimActivities.clear(); 1028 1029 // Mark the point when the activity is resuming 1030 // TODO: To be more accurate, the mark should be before the onCreate, 1031 // not after the onResume. But for subsequent starts, onResume is fine. 1032 if (next.app != null) { 1033 synchronized (mService.mProcessCpuThread) { 1034 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1035 } 1036 } else { 1037 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1038 } 1039 } 1040 1041 /** 1042 * Determine if home should be visible below the passed record. 1043 * @param record activity we are querying for. 1044 * @return true if home is visible below the passed activity, false otherwise. 1045 */ 1046 boolean isActivityOverHome(ActivityRecord record) { 1047 // Start at record and go down, look for either home or a visible fullscreen activity. 1048 final TaskRecord recordTask = record.task; 1049 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1050 TaskRecord task = mTaskHistory.get(taskNdx); 1051 final ArrayList<ActivityRecord> activities = task.mActivities; 1052 final int startNdx = 1053 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1054 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1055 final ActivityRecord r = activities.get(activityNdx); 1056 if (r.isHomeActivity()) { 1057 return true; 1058 } 1059 if (!r.finishing && r.fullscreen) { 1060 // Passed activity is over a fullscreen activity. 1061 return false; 1062 } 1063 } 1064 if (task.mOnTopOfHome) { 1065 // Got to the bottom of a task on top of home without finding a visible fullscreen 1066 // activity. Home is visible. 1067 return true; 1068 } 1069 } 1070 // Got to the bottom of this stack and still don't know. If this is over the home stack 1071 // then record is over home. May not work if we ever get more than two layers. 1072 return mStackSupervisor.isFrontStack(this); 1073 } 1074 1075 private void setVisibile(ActivityRecord r, boolean visible) { 1076 r.visible = visible; 1077 mWindowManager.setAppVisibility(r.appToken, visible); 1078 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1079 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1080 ActivityContainer container = containers.get(containerNdx); 1081 container.setVisible(visible); 1082 } 1083 } 1084 1085 /** 1086 * Version of ensureActivitiesVisible that can easily be called anywhere. 1087 */ 1088 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1089 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1090 } 1091 1092 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1093 boolean forceHomeShown) { 1094 ActivityRecord r = topRunningActivityLocked(null); 1095 return r != null && 1096 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1097 } 1098 1099 /** 1100 * Make sure that all activities that need to be visible (that is, they 1101 * currently can be seen by the user) actually are. 1102 */ 1103 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1104 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1105 if (DEBUG_VISBILITY) Slog.v( 1106 TAG, "ensureActivitiesVisible behind " + top 1107 + " configChanges=0x" + Integer.toHexString(configChanges)); 1108 1109 if (mTranslucentActivityWaiting != top) { 1110 mUndrawnActivitiesBelowTopTranslucent.clear(); 1111 if (mTranslucentActivityWaiting != null) { 1112 // Call the callback with a timeout indication. 1113 notifyActivityDrawnLocked(null); 1114 mTranslucentActivityWaiting = null; 1115 } 1116 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1117 } 1118 1119 // If the top activity is not fullscreen, then we need to 1120 // make sure any activities under it are now visible. 1121 boolean aboveTop = true; 1122 boolean showHomeBehindStack = false; 1123 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1124 !(forceHomeShown && isHomeStack()); 1125 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1126 final TaskRecord task = mTaskHistory.get(taskNdx); 1127 final ArrayList<ActivityRecord> activities = task.mActivities; 1128 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1129 final ActivityRecord r = activities.get(activityNdx); 1130 if (r.finishing) { 1131 continue; 1132 } 1133 if (aboveTop && r != top) { 1134 continue; 1135 } 1136 aboveTop = false; 1137 if (!behindFullscreen) { 1138 if (DEBUG_VISBILITY) Slog.v( 1139 TAG, "Make visible? " + r + " finishing=" + r.finishing 1140 + " state=" + r.state); 1141 1142 final boolean doThisProcess = onlyThisProcess == null 1143 || onlyThisProcess.equals(r.processName); 1144 1145 // First: if this is not the current activity being started, make 1146 // sure it matches the current configuration. 1147 if (r != starting && doThisProcess) { 1148 ensureActivityConfigurationLocked(r, 0); 1149 } 1150 1151 if (r.app == null || r.app.thread == null) { 1152 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1153 // This activity needs to be visible, but isn't even 1154 // running... get it started, but don't resume it 1155 // at this point. 1156 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1157 if (r != starting) { 1158 r.startFreezingScreenLocked(r.app, configChanges); 1159 } 1160 if (!r.visible) { 1161 if (DEBUG_VISBILITY) Slog.v( 1162 TAG, "Starting and making visible: " + r); 1163 setVisibile(r, true); 1164 } 1165 if (r != starting) { 1166 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1167 } 1168 } 1169 1170 } else if (r.visible) { 1171 // If this activity is already visible, then there is nothing 1172 // else to do here. 1173 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1174 r.stopFreezingScreenLocked(false); 1175 1176 } else if (onlyThisProcess == null) { 1177 // This activity is not currently visible, but is running. 1178 // Tell it to become visible. 1179 r.visible = true; 1180 if (r.state != ActivityState.RESUMED && r != starting) { 1181 // If this activity is paused, tell it 1182 // to now show its window. 1183 if (DEBUG_VISBILITY) Slog.v( 1184 TAG, "Making visible and scheduling visibility: " + r); 1185 try { 1186 if (mTranslucentActivityWaiting != null) { 1187 mUndrawnActivitiesBelowTopTranslucent.add(r); 1188 } 1189 setVisibile(r, true); 1190 r.sleeping = false; 1191 r.app.pendingUiClean = true; 1192 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1193 r.stopFreezingScreenLocked(false); 1194 } catch (Exception e) { 1195 // Just skip on any failure; we'll make it 1196 // visible when it next restarts. 1197 Slog.w(TAG, "Exception thrown making visibile: " 1198 + r.intent.getComponent(), e); 1199 } 1200 } 1201 } 1202 1203 // Aggregate current change flags. 1204 configChanges |= r.configChangeFlags; 1205 1206 if (r.fullscreen) { 1207 // At this point, nothing else needs to be shown 1208 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1209 behindFullscreen = true; 1210 showHomeBehindStack = false; 1211 } else if (isActivityOverHome(r)) { 1212 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1213 showHomeBehindStack = true; 1214 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1215 } 1216 } else { 1217 if (DEBUG_VISBILITY) Slog.v( 1218 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1219 + " state=" + r.state 1220 + " behindFullscreen=" + behindFullscreen); 1221 // Now for any activities that aren't visible to the user, make 1222 // sure they no longer are keeping the screen frozen. 1223 if (r.visible) { 1224 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1225 try { 1226 setVisibile(r, false); 1227 switch (r.state) { 1228 case STOPPING: 1229 case STOPPED: 1230 if (r.app != null && r.app.thread != null) { 1231 if (DEBUG_VISBILITY) Slog.v( 1232 TAG, "Scheduling invisibility: " + r); 1233 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1234 } 1235 break; 1236 1237 case INITIALIZING: 1238 case RESUMED: 1239 case PAUSING: 1240 case PAUSED: 1241 // This case created for transitioning activities from 1242 // translucent to opaque {@link Activity#convertToOpaque}. 1243 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1244 mStackSupervisor.mStoppingActivities.add(r); 1245 } 1246 mStackSupervisor.scheduleIdleLocked(); 1247 break; 1248 1249 default: 1250 break; 1251 } 1252 } catch (Exception e) { 1253 // Just skip on any failure; we'll make it 1254 // visible when it next restarts. 1255 Slog.w(TAG, "Exception thrown making hidden: " 1256 + r.intent.getComponent(), e); 1257 } 1258 } else { 1259 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1260 } 1261 } 1262 } 1263 } 1264 return showHomeBehindStack; 1265 } 1266 1267 void convertToTranslucent(ActivityRecord r) { 1268 mTranslucentActivityWaiting = r; 1269 mUndrawnActivitiesBelowTopTranslucent.clear(); 1270 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1271 } 1272 1273 /** 1274 * Called as activities below the top translucent activity are redrawn. When the last one is 1275 * redrawn notify the top activity by calling 1276 * {@link Activity#onTranslucentConversionComplete}. 1277 * 1278 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1279 * occurred and the activity will be notified immediately. 1280 */ 1281 void notifyActivityDrawnLocked(ActivityRecord r) { 1282 mActivityContainer.setDrawn(); 1283 if ((r == null) 1284 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1285 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1286 // The last undrawn activity below the top has just been drawn. If there is an 1287 // opaque activity at the top, notify it that it can become translucent safely now. 1288 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1289 mTranslucentActivityWaiting = null; 1290 mUndrawnActivitiesBelowTopTranslucent.clear(); 1291 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1292 1293 if (waitingActivity != null) { 1294 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1295 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1296 try { 1297 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1298 waitingActivity.appToken, r != null); 1299 } catch (RemoteException e) { 1300 } 1301 } 1302 } 1303 } 1304 } 1305 1306 /** If any activities below the top running one are in the INITIALIZING state and they have a 1307 * starting window displayed then remove that starting window. It is possible that the activity 1308 * in this state will never resumed in which case that starting window will be orphaned. */ 1309 void cancelInitializingActivities() { 1310 final ActivityRecord topActivity = topRunningActivityLocked(null); 1311 boolean aboveTop = true; 1312 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1313 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1314 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1315 final ActivityRecord r = activities.get(activityNdx); 1316 if (aboveTop) { 1317 if (r == topActivity) { 1318 aboveTop = false; 1319 } 1320 continue; 1321 } 1322 1323 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1324 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1325 r.mStartingWindowShown = false; 1326 mWindowManager.removeAppStartingWindow(r.appToken); 1327 } 1328 } 1329 } 1330 } 1331 1332 /** 1333 * Ensure that the top activity in the stack is resumed. 1334 * 1335 * @param prev The previously resumed activity, for when in the process 1336 * of pausing; can be null to call from elsewhere. 1337 * 1338 * @return Returns true if something is being resumed, or false if 1339 * nothing happened. 1340 */ 1341 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1342 return resumeTopActivityLocked(prev, null); 1343 } 1344 1345 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1346 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1347 1348 ActivityRecord parent = mActivityContainer.mParentActivity; 1349 if ((parent != null && parent.state != ActivityState.RESUMED) || 1350 !mActivityContainer.isAttached()) { 1351 // Do not resume this stack if its parent is not resumed. 1352 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1353 return false; 1354 } 1355 1356 cancelInitializingActivities(); 1357 1358 // Find the first activity that is not finishing. 1359 ActivityRecord next = topRunningActivityLocked(null); 1360 1361 // Remember how we'll process this pause/resume situation, and ensure 1362 // that the state is reset however we wind up proceeding. 1363 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1364 mStackSupervisor.mUserLeaving = false; 1365 1366 if (next == null) { 1367 // There are no more activities! Let's just start up the 1368 // Launcher... 1369 ActivityOptions.abort(options); 1370 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1371 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1372 // Only resume home if on home display 1373 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1374 } 1375 1376 next.delayedResume = false; 1377 1378 // If the top activity is the resumed one, nothing to do. 1379 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1380 mStackSupervisor.allResumedActivitiesComplete()) { 1381 // Make sure we have executed any pending transitions, since there 1382 // should be nothing left to do at this point. 1383 mWindowManager.executeAppTransition(); 1384 mNoAnimActivities.clear(); 1385 ActivityOptions.abort(options); 1386 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1387 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1388 return false; 1389 } 1390 1391 final TaskRecord nextTask = next.task; 1392 final TaskRecord prevTask = prev != null ? prev.task : null; 1393 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1394 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1395 if (prevTask == nextTask) { 1396 prevTask.setFrontOfTask(); 1397 } else if (prevTask != topTask()) { 1398 // This task is going away but it was supposed to return to the home task. 1399 // Now the task above it has to return to the home task instead. 1400 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1401 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1402 } else { 1403 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1404 "resumeTopActivityLocked: Launching home next"); 1405 // Only resume home if on home display 1406 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1407 } 1408 } 1409 1410 // If we are sleeping, and there is no resumed activity, and the top 1411 // activity is paused, well that is the state we want. 1412 if (mService.isSleepingOrShuttingDown() 1413 && mLastPausedActivity == next 1414 && mStackSupervisor.allPausedActivitiesComplete()) { 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: Going to sleep and all paused"); 1421 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1422 return false; 1423 } 1424 1425 // Make sure that the user who owns this activity is started. If not, 1426 // we will just leave it as is because someone should be bringing 1427 // another user's activities to the top of the stack. 1428 if (mService.mStartedUsers.get(next.userId) == null) { 1429 Slog.w(TAG, "Skipping resume of top activity " + next 1430 + ": user " + next.userId + " is stopped"); 1431 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1432 return false; 1433 } 1434 1435 // The activity may be waiting for stop, but that is no longer 1436 // appropriate for it. 1437 mStackSupervisor.mStoppingActivities.remove(next); 1438 mStackSupervisor.mGoingToSleepActivities.remove(next); 1439 next.sleeping = false; 1440 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1441 1442 next.updateOptionsLocked(options); 1443 1444 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1445 1446 // If we are currently pausing an activity, then don't do anything 1447 // until that is done. 1448 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1449 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1450 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1451 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1452 return false; 1453 } 1454 1455 // Okay we are now going to start a switch, to 'next'. We may first 1456 // have to pause the current activity, but this is an important point 1457 // where we have decided to go to 'next' so keep track of that. 1458 // XXX "App Redirected" dialog is getting too many false positives 1459 // at this point, so turn off for now. 1460 if (false) { 1461 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1462 long now = SystemClock.uptimeMillis(); 1463 final boolean inTime = mLastStartedActivity.startTime != 0 1464 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1465 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1466 final int nextUid = next.info.applicationInfo.uid; 1467 if (inTime && lastUid != nextUid 1468 && lastUid != next.launchedFromUid 1469 && mService.checkPermission( 1470 android.Manifest.permission.STOP_APP_SWITCHES, 1471 -1, next.launchedFromUid) 1472 != PackageManager.PERMISSION_GRANTED) { 1473 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1474 } else { 1475 next.startTime = now; 1476 mLastStartedActivity = next; 1477 } 1478 } else { 1479 next.startTime = SystemClock.uptimeMillis(); 1480 mLastStartedActivity = next; 1481 } 1482 } 1483 1484 // We need to start pausing the current activity so the top one 1485 // can be resumed... 1486 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1487 if (mResumedActivity != null) { 1488 pausing = true; 1489 startPausingLocked(userLeaving, false); 1490 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1491 } 1492 if (pausing) { 1493 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1494 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1495 // At this point we want to put the upcoming activity's process 1496 // at the top of the LRU list, since we know we will be needing it 1497 // very soon and it would be a waste to let it get killed if it 1498 // happens to be sitting towards the end. 1499 if (next.app != null && next.app.thread != null) { 1500 // No reason to do full oom adj update here; we'll let that 1501 // happen whenever it needs to later. 1502 mService.updateLruProcessLocked(next.app, true, null); 1503 } 1504 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1505 return true; 1506 } 1507 1508 // If the most recent activity was noHistory but was only stopped rather 1509 // than stopped+finished because the device went to sleep, we need to make 1510 // sure to finish it as we're making a new activity topmost. 1511 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1512 !mLastNoHistoryActivity.finishing) { 1513 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1514 " on new resume"); 1515 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1516 null, "no-history", false); 1517 mLastNoHistoryActivity = null; 1518 } 1519 1520 if (prev != null && prev != next) { 1521 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1522 prev.waitingVisible = true; 1523 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1524 if (DEBUG_SWITCH) Slog.v( 1525 TAG, "Resuming top, waiting visible to hide: " + prev); 1526 } else { 1527 // The next activity is already visible, so hide the previous 1528 // activity's windows right now so we can show the new one ASAP. 1529 // We only do this if the previous is finishing, which should mean 1530 // it is on top of the one being resumed so hiding it quickly 1531 // is good. Otherwise, we want to do the normal route of allowing 1532 // the resumed activity to be shown so we can decide if the 1533 // previous should actually be hidden depending on whether the 1534 // new one is found to be full-screen or not. 1535 if (prev.finishing) { 1536 mWindowManager.setAppVisibility(prev.appToken, false); 1537 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1538 + prev + ", waitingVisible=" 1539 + (prev != null ? prev.waitingVisible : null) 1540 + ", nowVisible=" + next.nowVisible); 1541 } else { 1542 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1543 + prev + ", waitingVisible=" 1544 + (prev != null ? prev.waitingVisible : null) 1545 + ", nowVisible=" + next.nowVisible); 1546 } 1547 } 1548 } 1549 1550 // Launching this app's activity, make sure the app is no longer 1551 // considered stopped. 1552 try { 1553 AppGlobals.getPackageManager().setPackageStoppedState( 1554 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1555 } catch (RemoteException e1) { 1556 } catch (IllegalArgumentException e) { 1557 Slog.w(TAG, "Failed trying to unstop package " 1558 + next.packageName + ": " + e); 1559 } 1560 1561 // We are starting up the next activity, so tell the window manager 1562 // that the previous one will be hidden soon. This way it can know 1563 // to ignore it when computing the desired screen orientation. 1564 boolean anim = true; 1565 if (prev != null) { 1566 if (prev.finishing) { 1567 if (DEBUG_TRANSITION) Slog.v(TAG, 1568 "Prepare close transition: prev=" + prev); 1569 if (mNoAnimActivities.contains(prev)) { 1570 anim = false; 1571 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1572 } else { 1573 mWindowManager.prepareAppTransition(prev.task == next.task 1574 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1575 : AppTransition.TRANSIT_TASK_CLOSE, false); 1576 } 1577 mWindowManager.setAppWillBeHidden(prev.appToken); 1578 mWindowManager.setAppVisibility(prev.appToken, false); 1579 } else { 1580 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1581 if (mNoAnimActivities.contains(next)) { 1582 anim = false; 1583 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1584 } else { 1585 mWindowManager.prepareAppTransition(prev.task == next.task 1586 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1587 : AppTransition.TRANSIT_TASK_OPEN, false); 1588 } 1589 } 1590 if (false) { 1591 mWindowManager.setAppWillBeHidden(prev.appToken); 1592 mWindowManager.setAppVisibility(prev.appToken, false); 1593 } 1594 } else { 1595 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1596 if (mNoAnimActivities.contains(next)) { 1597 anim = false; 1598 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1599 } else { 1600 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1601 } 1602 } 1603 1604 Bundle resumeAnimOptions = null; 1605 if (anim) { 1606 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1607 if (opts != null) { 1608 resumeAnimOptions = opts.toBundle(); 1609 } 1610 next.applyOptionsLocked(); 1611 } else { 1612 next.clearOptionsLocked(); 1613 } 1614 1615 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1616 if (next.app != null && next.app.thread != null) { 1617 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1618 1619 // This activity is now becoming visible. 1620 mWindowManager.setAppVisibility(next.appToken, true); 1621 1622 // schedule launch ticks to collect information about slow apps. 1623 next.startLaunchTickingLocked(); 1624 1625 ActivityRecord lastResumedActivity = 1626 lastStack == null ? null :lastStack.mResumedActivity; 1627 ActivityState lastState = next.state; 1628 1629 mService.updateCpuStats(); 1630 1631 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1632 next.state = ActivityState.RESUMED; 1633 mResumedActivity = next; 1634 next.task.touchActiveTime(); 1635 mService.addRecentTaskLocked(next.task); 1636 mService.updateLruProcessLocked(next.app, true, null); 1637 updateLRUListLocked(next); 1638 mService.updateOomAdjLocked(); 1639 1640 // Have the window manager re-evaluate the orientation of 1641 // the screen based on the new activity order. 1642 boolean notUpdated = true; 1643 if (mStackSupervisor.isFrontStack(this)) { 1644 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1645 mService.mConfiguration, 1646 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1647 if (config != null) { 1648 next.frozenBeforeDestroy = true; 1649 } 1650 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1651 } 1652 1653 if (notUpdated) { 1654 // The configuration update wasn't able to keep the existing 1655 // instance of the activity, and instead started a new one. 1656 // We should be all done, but let's just make sure our activity 1657 // is still at the top and schedule another run if something 1658 // weird happened. 1659 ActivityRecord nextNext = topRunningActivityLocked(null); 1660 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1661 "Activity config changed during resume: " + next 1662 + ", new next: " + nextNext); 1663 if (nextNext != next) { 1664 // Do over! 1665 mStackSupervisor.scheduleResumeTopActivities(); 1666 } 1667 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1668 mNoAnimActivities.clear(); 1669 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1670 return true; 1671 } 1672 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1673 return false; 1674 } 1675 1676 try { 1677 // Deliver all pending results. 1678 ArrayList<ResultInfo> a = next.results; 1679 if (a != null) { 1680 final int N = a.size(); 1681 if (!next.finishing && N > 0) { 1682 if (DEBUG_RESULTS) Slog.v( 1683 TAG, "Delivering results to " + next 1684 + ": " + a); 1685 next.app.thread.scheduleSendResult(next.appToken, a); 1686 } 1687 } 1688 1689 if (next.newIntents != null) { 1690 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1691 } 1692 1693 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1694 next.userId, System.identityHashCode(next), 1695 next.task.taskId, next.shortComponentName); 1696 1697 next.sleeping = false; 1698 mService.showAskCompatModeDialogLocked(next); 1699 next.app.pendingUiClean = true; 1700 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1701 next.clearOptionsLocked(); 1702 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1703 mService.isNextTransitionForward(), resumeAnimOptions); 1704 1705 mStackSupervisor.checkReadyForSleepLocked(); 1706 1707 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1708 } catch (Exception e) { 1709 // Whoops, need to restart this activity! 1710 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1711 + lastState + ": " + next); 1712 next.state = lastState; 1713 if (lastStack != null) { 1714 lastStack.mResumedActivity = lastResumedActivity; 1715 } 1716 Slog.i(TAG, "Restarting because process died: " + next); 1717 if (!next.hasBeenLaunched) { 1718 next.hasBeenLaunched = true; 1719 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1720 mStackSupervisor.isFrontStack(lastStack)) { 1721 mWindowManager.setAppStartingWindow( 1722 next.appToken, next.packageName, next.theme, 1723 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1724 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1725 next.windowFlags, null, true); 1726 } 1727 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1728 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1729 return true; 1730 } 1731 1732 // From this point on, if something goes wrong there is no way 1733 // to recover the activity. 1734 try { 1735 next.visible = true; 1736 completeResumeLocked(next); 1737 } catch (Exception e) { 1738 // If any exception gets thrown, toss away this 1739 // activity and try the next one. 1740 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1741 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1742 "resume-exception", true); 1743 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1744 return true; 1745 } 1746 next.stopped = false; 1747 1748 } else { 1749 // Whoops, need to restart this activity! 1750 if (!next.hasBeenLaunched) { 1751 next.hasBeenLaunched = true; 1752 } else { 1753 if (SHOW_APP_STARTING_PREVIEW) { 1754 mWindowManager.setAppStartingWindow( 1755 next.appToken, next.packageName, next.theme, 1756 mService.compatibilityInfoForPackageLocked( 1757 next.info.applicationInfo), 1758 next.nonLocalizedLabel, 1759 next.labelRes, next.icon, next.logo, next.windowFlags, 1760 null, true); 1761 } 1762 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1763 } 1764 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1765 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1766 } 1767 1768 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1769 return true; 1770 } 1771 1772 private void insertTaskAtTop(TaskRecord task) { 1773 // If this is being moved to the top by another activity or being launched from the home 1774 // activity, set mOnTopOfHome accordingly. 1775 if (isOnHomeDisplay()) { 1776 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1777 final boolean fromHome = lastStack.isHomeStack(); 1778 if (!isHomeStack() && (fromHome || topTask() != task)) { 1779 task.mOnTopOfHome = fromHome; 1780 } 1781 } else { 1782 task.mOnTopOfHome = false; 1783 } 1784 1785 mTaskHistory.remove(task); 1786 // Now put task at top. 1787 int stackNdx = mTaskHistory.size(); 1788 if (!isCurrentProfileLocked(task.userId)) { 1789 // Put non-current user tasks below current user tasks. 1790 while (--stackNdx >= 0) { 1791 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1792 break; 1793 } 1794 } 1795 ++stackNdx; 1796 } 1797 mTaskHistory.add(stackNdx, task); 1798 } 1799 1800 final void startActivityLocked(ActivityRecord r, boolean newTask, 1801 boolean doResume, boolean keepCurTransition, Bundle options) { 1802 TaskRecord rTask = r.task; 1803 final int taskId = rTask.taskId; 1804 if (taskForIdLocked(taskId) == null || newTask) { 1805 // Last activity in task had been removed or ActivityManagerService is reusing task. 1806 // Insert or replace. 1807 // Might not even be in. 1808 insertTaskAtTop(rTask); 1809 mWindowManager.moveTaskToTop(taskId); 1810 } 1811 TaskRecord task = null; 1812 if (!newTask) { 1813 // If starting in an existing task, find where that is... 1814 boolean startIt = true; 1815 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1816 task = mTaskHistory.get(taskNdx); 1817 if (task == r.task) { 1818 // Here it is! Now, if this is not yet visible to the 1819 // user, then just add it without starting; it will 1820 // get started when the user navigates back to it. 1821 if (!startIt) { 1822 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1823 + task, new RuntimeException("here").fillInStackTrace()); 1824 task.addActivityToTop(r); 1825 r.putInHistory(); 1826 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1827 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1828 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1829 r.userId, r.info.configChanges); 1830 if (VALIDATE_TOKENS) { 1831 validateAppTokensLocked(); 1832 } 1833 ActivityOptions.abort(options); 1834 return; 1835 } 1836 break; 1837 } else if (task.numFullscreen > 0) { 1838 startIt = false; 1839 } 1840 } 1841 } 1842 1843 // Place a new activity at top of stack, so it is next to interact 1844 // with the user. 1845 1846 // If we are not placing the new activity frontmost, we do not want 1847 // to deliver the onUserLeaving callback to the actual frontmost 1848 // activity 1849 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1850 mStackSupervisor.mUserLeaving = false; 1851 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1852 "startActivity() behind front, mUserLeaving=false"); 1853 } 1854 1855 task = r.task; 1856 1857 // Slot the activity into the history stack and proceed 1858 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1859 new RuntimeException("here").fillInStackTrace()); 1860 task.addActivityToTop(r); 1861 task.setFrontOfTask(); 1862 1863 r.putInHistory(); 1864 if (!isHomeStack() || numActivities() > 0) { 1865 // We want to show the starting preview window if we are 1866 // switching to a new task, or the next activity's process is 1867 // not currently running. 1868 boolean showStartingIcon = newTask; 1869 ProcessRecord proc = r.app; 1870 if (proc == null) { 1871 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1872 } 1873 if (proc == null || proc.thread == null) { 1874 showStartingIcon = true; 1875 } 1876 if (DEBUG_TRANSITION) Slog.v(TAG, 1877 "Prepare open transition: starting " + r); 1878 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1879 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1880 mNoAnimActivities.add(r); 1881 } else { 1882 mWindowManager.prepareAppTransition(newTask 1883 ? AppTransition.TRANSIT_TASK_OPEN 1884 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1885 mNoAnimActivities.remove(r); 1886 } 1887 r.updateOptionsLocked(options); 1888 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1889 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1890 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1891 r.info.configChanges); 1892 boolean doShow = true; 1893 if (newTask) { 1894 // Even though this activity is starting fresh, we still need 1895 // to reset it to make sure we apply affinities to move any 1896 // existing activities from other tasks in to it. 1897 // If the caller has requested that the target task be 1898 // reset, then do so. 1899 if ((r.intent.getFlags() 1900 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1901 resetTaskIfNeededLocked(r, r); 1902 doShow = topRunningNonDelayedActivityLocked(null) == r; 1903 } 1904 } 1905 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1906 // Figure out if we are transitioning from another activity that is 1907 // "has the same starting icon" as the next one. This allows the 1908 // window manager to keep the previous window it had previously 1909 // created, if it still had one. 1910 ActivityRecord prev = mResumedActivity; 1911 if (prev != null) { 1912 // We don't want to reuse the previous starting preview if: 1913 // (1) The current activity is in a different task. 1914 if (prev.task != r.task) { 1915 prev = null; 1916 } 1917 // (2) The current activity is already displayed. 1918 else if (prev.nowVisible) { 1919 prev = null; 1920 } 1921 } 1922 mWindowManager.setAppStartingWindow( 1923 r.appToken, r.packageName, r.theme, 1924 mService.compatibilityInfoForPackageLocked( 1925 r.info.applicationInfo), r.nonLocalizedLabel, 1926 r.labelRes, r.icon, r.logo, r.windowFlags, 1927 prev != null ? prev.appToken : null, showStartingIcon); 1928 r.mStartingWindowShown = true; 1929 } 1930 } else { 1931 // If this is the first activity, don't do any fancy animations, 1932 // because there is nothing for it to animate on top of. 1933 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1934 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1935 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1936 r.info.configChanges); 1937 ActivityOptions.abort(options); 1938 } 1939 if (VALIDATE_TOKENS) { 1940 validateAppTokensLocked(); 1941 } 1942 1943 if (doResume) { 1944 mStackSupervisor.resumeTopActivitiesLocked(); 1945 } 1946 } 1947 1948 final void validateAppTokensLocked() { 1949 mValidateAppTokens.clear(); 1950 mValidateAppTokens.ensureCapacity(numActivities()); 1951 final int numTasks = mTaskHistory.size(); 1952 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1953 TaskRecord task = mTaskHistory.get(taskNdx); 1954 final ArrayList<ActivityRecord> activities = task.mActivities; 1955 if (activities.isEmpty()) { 1956 continue; 1957 } 1958 TaskGroup group = new TaskGroup(); 1959 group.taskId = task.taskId; 1960 mValidateAppTokens.add(group); 1961 final int numActivities = activities.size(); 1962 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1963 final ActivityRecord r = activities.get(activityNdx); 1964 group.tokens.add(r.appToken); 1965 } 1966 } 1967 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1968 } 1969 1970 /** 1971 * Perform a reset of the given task, if needed as part of launching it. 1972 * Returns the new HistoryRecord at the top of the task. 1973 */ 1974 /** 1975 * Helper method for #resetTaskIfNeededLocked. 1976 * We are inside of the task being reset... we'll either finish this activity, push it out 1977 * for another task, or leave it as-is. 1978 * @param task The task containing the Activity (taskTop) that might be reset. 1979 * @param forceReset 1980 * @return An ActivityOptions that needs to be processed. 1981 */ 1982 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1983 ActivityOptions topOptions = null; 1984 1985 int replyChainEnd = -1; 1986 boolean canMoveOptions = true; 1987 1988 // We only do this for activities that are not the root of the task (since if we finish 1989 // the root, we may no longer have the task!). 1990 final ArrayList<ActivityRecord> activities = task.mActivities; 1991 final int numActivities = activities.size(); 1992 for (int i = numActivities - 1; i > 0; --i ) { 1993 ActivityRecord target = activities.get(i); 1994 1995 final int flags = target.info.flags; 1996 final boolean finishOnTaskLaunch = 1997 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1998 final boolean allowTaskReparenting = 1999 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2000 final boolean clearWhenTaskReset = 2001 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2002 2003 if (!finishOnTaskLaunch 2004 && !clearWhenTaskReset 2005 && target.resultTo != null) { 2006 // If this activity is sending a reply to a previous 2007 // activity, we can't do anything with it now until 2008 // we reach the start of the reply chain. 2009 // XXX note that we are assuming the result is always 2010 // to the previous activity, which is almost always 2011 // the case but we really shouldn't count on. 2012 if (replyChainEnd < 0) { 2013 replyChainEnd = i; 2014 } 2015 } else if (!finishOnTaskLaunch 2016 && !clearWhenTaskReset 2017 && allowTaskReparenting 2018 && target.taskAffinity != null 2019 && !target.taskAffinity.equals(task.affinity)) { 2020 // If this activity has an affinity for another 2021 // task, then we need to move it out of here. We will 2022 // move it as far out of the way as possible, to the 2023 // bottom of the activity stack. This also keeps it 2024 // correctly ordered with any activities we previously 2025 // moved. 2026 final ThumbnailHolder newThumbHolder; 2027 final TaskRecord targetTask; 2028 final ActivityRecord bottom = 2029 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2030 mTaskHistory.get(0).mActivities.get(0) : null; 2031 if (bottom != null && target.taskAffinity != null 2032 && target.taskAffinity.equals(bottom.task.affinity)) { 2033 // If the activity currently at the bottom has the 2034 // same task affinity as the one we are moving, 2035 // then merge it into the same task. 2036 targetTask = bottom.task; 2037 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2038 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2039 + " out to bottom task " + bottom.task); 2040 } else { 2041 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2042 null, null, null, false); 2043 newThumbHolder = targetTask; 2044 targetTask.affinityIntent = target.intent; 2045 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2046 + " out to new task " + target.task); 2047 } 2048 2049 target.thumbHolder = newThumbHolder; 2050 2051 final int targetTaskId = targetTask.taskId; 2052 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2053 2054 boolean noOptions = canMoveOptions; 2055 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2056 for (int srcPos = start; srcPos >= i; --srcPos) { 2057 final ActivityRecord p = activities.get(srcPos); 2058 if (p.finishing) { 2059 continue; 2060 } 2061 2062 ThumbnailHolder curThumbHolder = p.thumbHolder; 2063 canMoveOptions = false; 2064 if (noOptions && topOptions == null) { 2065 topOptions = p.takeOptionsLocked(); 2066 if (topOptions != null) { 2067 noOptions = false; 2068 } 2069 } 2070 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2071 + task + " adding to task=" + targetTask 2072 + " Callers=" + Debug.getCallers(4)); 2073 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2074 + " out to target's task " + target.task); 2075 p.setTask(targetTask, curThumbHolder, false); 2076 targetTask.addActivityAtBottom(p); 2077 2078 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2079 } 2080 2081 mWindowManager.moveTaskToBottom(targetTaskId); 2082 if (VALIDATE_TOKENS) { 2083 validateAppTokensLocked(); 2084 } 2085 2086 replyChainEnd = -1; 2087 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2088 // If the activity should just be removed -- either 2089 // because it asks for it, or the task should be 2090 // cleared -- then finish it and anything that is 2091 // part of its reply chain. 2092 int end; 2093 if (clearWhenTaskReset) { 2094 // In this case, we want to finish this activity 2095 // and everything above it, so be sneaky and pretend 2096 // like these are all in the reply chain. 2097 end = numActivities - 1; 2098 } else if (replyChainEnd < 0) { 2099 end = i; 2100 } else { 2101 end = replyChainEnd; 2102 } 2103 boolean noOptions = canMoveOptions; 2104 for (int srcPos = i; srcPos <= end; srcPos++) { 2105 ActivityRecord p = activities.get(srcPos); 2106 if (p.finishing) { 2107 continue; 2108 } 2109 canMoveOptions = false; 2110 if (noOptions && topOptions == null) { 2111 topOptions = p.takeOptionsLocked(); 2112 if (topOptions != null) { 2113 noOptions = false; 2114 } 2115 } 2116 if (DEBUG_TASKS) Slog.w(TAG, 2117 "resetTaskIntendedTask: calling finishActivity on " + p); 2118 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2119 end--; 2120 srcPos--; 2121 } 2122 } 2123 replyChainEnd = -1; 2124 } else { 2125 // If we were in the middle of a chain, well the 2126 // activity that started it all doesn't want anything 2127 // special, so leave it all as-is. 2128 replyChainEnd = -1; 2129 } 2130 } 2131 2132 return topOptions; 2133 } 2134 2135 /** 2136 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2137 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2138 * @param affinityTask The task we are looking for an affinity to. 2139 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2140 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2141 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2142 */ 2143 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2144 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2145 int replyChainEnd = -1; 2146 final int taskId = task.taskId; 2147 final String taskAffinity = task.affinity; 2148 2149 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2150 final int numActivities = activities.size(); 2151 // Do not operate on the root Activity. 2152 for (int i = numActivities - 1; i > 0; --i) { 2153 ActivityRecord target = activities.get(i); 2154 2155 final int flags = target.info.flags; 2156 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2157 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2158 2159 if (target.resultTo != null) { 2160 // If this activity is sending a reply to a previous 2161 // activity, we can't do anything with it now until 2162 // we reach the start of the reply chain. 2163 // XXX note that we are assuming the result is always 2164 // to the previous activity, which is almost always 2165 // the case but we really shouldn't count on. 2166 if (replyChainEnd < 0) { 2167 replyChainEnd = i; 2168 } 2169 } else if (topTaskIsHigher 2170 && allowTaskReparenting 2171 && taskAffinity != null 2172 && taskAffinity.equals(target.taskAffinity)) { 2173 // This activity has an affinity for our task. Either remove it if we are 2174 // clearing or move it over to our task. Note that 2175 // we currently punt on the case where we are resetting a 2176 // task that is not at the top but who has activities above 2177 // with an affinity to it... this is really not a normal 2178 // case, and we will need to later pull that task to the front 2179 // and usually at that point we will do the reset and pick 2180 // up those remaining activities. (This only happens if 2181 // someone starts an activity in a new task from an activity 2182 // in a task that is not currently on top.) 2183 if (forceReset || finishOnTaskLaunch) { 2184 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2185 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2186 for (int srcPos = start; srcPos >= i; --srcPos) { 2187 final ActivityRecord p = activities.get(srcPos); 2188 if (p.finishing) { 2189 continue; 2190 } 2191 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2192 } 2193 } else { 2194 if (taskInsertionPoint < 0) { 2195 taskInsertionPoint = task.mActivities.size(); 2196 2197 } 2198 2199 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2200 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2201 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2202 for (int srcPos = start; srcPos >= i; --srcPos) { 2203 final ActivityRecord p = activities.get(srcPos); 2204 p.setTask(task, null, false); 2205 task.addActivityAtIndex(taskInsertionPoint, p); 2206 2207 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2208 + " to stack at " + task, 2209 new RuntimeException("here").fillInStackTrace()); 2210 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2211 + " in to resetting task " + task); 2212 mWindowManager.setAppGroupId(p.appToken, taskId); 2213 } 2214 mWindowManager.moveTaskToTop(taskId); 2215 if (VALIDATE_TOKENS) { 2216 validateAppTokensLocked(); 2217 } 2218 2219 // Now we've moved it in to place... but what if this is 2220 // a singleTop activity and we have put it on top of another 2221 // instance of the same activity? Then we drop the instance 2222 // below so it remains singleTop. 2223 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2224 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2225 int targetNdx = taskActivities.indexOf(target); 2226 if (targetNdx > 0) { 2227 ActivityRecord p = taskActivities.get(targetNdx - 1); 2228 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2229 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2230 false); 2231 } 2232 } 2233 } 2234 } 2235 2236 replyChainEnd = -1; 2237 } 2238 } 2239 return taskInsertionPoint; 2240 } 2241 2242 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2243 ActivityRecord newActivity) { 2244 boolean forceReset = 2245 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2246 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2247 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2248 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2249 forceReset = true; 2250 } 2251 } 2252 2253 final TaskRecord task = taskTop.task; 2254 2255 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2256 * for remaining tasks. Used for later tasks to reparent to task. */ 2257 boolean taskFound = false; 2258 2259 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2260 ActivityOptions topOptions = null; 2261 2262 // Preserve the location for reparenting in the new task. 2263 int reparentInsertionPoint = -1; 2264 2265 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2266 final TaskRecord targetTask = mTaskHistory.get(i); 2267 2268 if (targetTask == task) { 2269 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2270 taskFound = true; 2271 } else { 2272 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2273 taskFound, forceReset, reparentInsertionPoint); 2274 } 2275 } 2276 2277 int taskNdx = mTaskHistory.indexOf(task); 2278 do { 2279 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2280 } while (taskTop == null && taskNdx >= 0); 2281 2282 if (topOptions != null) { 2283 // If we got some ActivityOptions from an activity on top that 2284 // was removed from the task, propagate them to the new real top. 2285 if (taskTop != null) { 2286 taskTop.updateOptionsLocked(topOptions); 2287 } else { 2288 topOptions.abort(); 2289 } 2290 } 2291 2292 return taskTop; 2293 } 2294 2295 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2296 String resultWho, int requestCode, int resultCode, Intent data) { 2297 2298 if (callingUid > 0) { 2299 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2300 data, r.getUriPermissionsLocked()); 2301 } 2302 2303 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2304 + " : who=" + resultWho + " req=" + requestCode 2305 + " res=" + resultCode + " data=" + data); 2306 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2307 try { 2308 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2309 list.add(new ResultInfo(resultWho, requestCode, 2310 resultCode, data)); 2311 r.app.thread.scheduleSendResult(r.appToken, list); 2312 return; 2313 } catch (Exception e) { 2314 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2315 } 2316 } 2317 2318 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2319 } 2320 2321 private void adjustFocusedActivityLocked(ActivityRecord r) { 2322 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2323 ActivityRecord next = topRunningActivityLocked(null); 2324 if (next != r) { 2325 final TaskRecord task = r.task; 2326 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2327 mStackSupervisor.moveHomeToTop(); 2328 } 2329 } 2330 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2331 if (top != null) { 2332 mService.setFocusedActivityLocked(top); 2333 } 2334 } 2335 } 2336 2337 final void stopActivityLocked(ActivityRecord r) { 2338 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2339 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2340 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2341 if (!r.finishing) { 2342 if (!mService.isSleeping()) { 2343 if (DEBUG_STATES) { 2344 Slog.d(TAG, "no-history finish of " + r); 2345 } 2346 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2347 "no-history", false); 2348 } else { 2349 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2350 + " on stop because we're just sleeping"); 2351 } 2352 } 2353 } 2354 2355 if (r.app != null && r.app.thread != null) { 2356 adjustFocusedActivityLocked(r); 2357 r.resumeKeyDispatchingLocked(); 2358 try { 2359 r.stopped = false; 2360 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2361 + " (stop requested)"); 2362 r.state = ActivityState.STOPPING; 2363 if (DEBUG_VISBILITY) Slog.v( 2364 TAG, "Stopping visible=" + r.visible + " for " + r); 2365 if (!r.visible) { 2366 mWindowManager.setAppVisibility(r.appToken, false); 2367 } 2368 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2369 if (mService.isSleepingOrShuttingDown()) { 2370 r.setSleeping(true); 2371 } 2372 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2373 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2374 } catch (Exception e) { 2375 // Maybe just ignore exceptions here... if the process 2376 // has crashed, our death notification will clean things 2377 // up. 2378 Slog.w(TAG, "Exception thrown during pause", e); 2379 // Just in case, assume it to be stopped. 2380 r.stopped = true; 2381 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2382 r.state = ActivityState.STOPPED; 2383 if (r.configDestroy) { 2384 destroyActivityLocked(r, true, false, "stop-except"); 2385 } 2386 } 2387 } 2388 } 2389 2390 /** 2391 * @return Returns true if the activity is being finished, false if for 2392 * some reason it is being left as-is. 2393 */ 2394 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2395 Intent resultData, String reason, boolean oomAdj) { 2396 ActivityRecord r = isInStackLocked(token); 2397 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2398 TAG, "Finishing activity token=" + token + " r=" 2399 + ", result=" + resultCode + ", data=" + resultData 2400 + ", reason=" + reason); 2401 if (r == null) { 2402 return false; 2403 } 2404 2405 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2406 return true; 2407 } 2408 2409 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2410 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2411 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2412 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2413 ActivityRecord r = activities.get(activityNdx); 2414 if (r.resultTo == self && r.requestCode == requestCode) { 2415 if ((r.resultWho == null && resultWho == null) || 2416 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2417 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2418 false); 2419 } 2420 } 2421 } 2422 } 2423 mService.updateOomAdjLocked(); 2424 } 2425 2426 final void finishTopRunningActivityLocked(ProcessRecord app) { 2427 ActivityRecord r = topRunningActivityLocked(null); 2428 if (r != null && r.app == app) { 2429 // If the top running activity is from this crashing 2430 // process, then terminate it to avoid getting in a loop. 2431 Slog.w(TAG, " Force finishing activity " 2432 + r.intent.getComponent().flattenToShortString()); 2433 int taskNdx = mTaskHistory.indexOf(r.task); 2434 int activityNdx = r.task.mActivities.indexOf(r); 2435 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2436 // Also terminate any activities below it that aren't yet 2437 // stopped, to avoid a situation where one will get 2438 // re-start our crashing activity once it gets resumed again. 2439 --activityNdx; 2440 if (activityNdx < 0) { 2441 do { 2442 --taskNdx; 2443 if (taskNdx < 0) { 2444 break; 2445 } 2446 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2447 } while (activityNdx < 0); 2448 } 2449 if (activityNdx >= 0) { 2450 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2451 if (r.state == ActivityState.RESUMED 2452 || r.state == ActivityState.PAUSING 2453 || r.state == ActivityState.PAUSED) { 2454 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2455 Slog.w(TAG, " Force finishing activity " 2456 + r.intent.getComponent().flattenToShortString()); 2457 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2458 } 2459 } 2460 } 2461 } 2462 } 2463 2464 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2465 ArrayList<ActivityRecord> activities = r.task.mActivities; 2466 for (int index = activities.indexOf(r); index >= 0; --index) { 2467 ActivityRecord cur = activities.get(index); 2468 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2469 break; 2470 } 2471 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2472 } 2473 return true; 2474 } 2475 2476 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2477 // send the result 2478 ActivityRecord resultTo = r.resultTo; 2479 if (resultTo != null) { 2480 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2481 + " who=" + r.resultWho + " req=" + r.requestCode 2482 + " res=" + resultCode + " data=" + resultData); 2483 if (r.info.applicationInfo.uid > 0) { 2484 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2485 resultTo.packageName, resultData, 2486 resultTo.getUriPermissionsLocked()); 2487 } 2488 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2489 resultData); 2490 r.resultTo = null; 2491 } 2492 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2493 2494 // Make sure this HistoryRecord is not holding on to other resources, 2495 // because clients have remote IPC references to this object so we 2496 // can't assume that will go away and want to avoid circular IPC refs. 2497 r.results = null; 2498 r.pendingResults = null; 2499 r.newIntents = null; 2500 r.icicle = null; 2501 } 2502 2503 /** 2504 * @return Returns true if this activity has been removed from the history 2505 * list, or false if it is still in the list and will be removed later. 2506 */ 2507 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2508 String reason, boolean oomAdj) { 2509 if (r.finishing) { 2510 Slog.w(TAG, "Duplicate finish request for " + r); 2511 return false; 2512 } 2513 2514 r.makeFinishing(); 2515 final TaskRecord task = r.task; 2516 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2517 r.userId, System.identityHashCode(r), 2518 task.taskId, r.shortComponentName, reason); 2519 final ArrayList<ActivityRecord> activities = task.mActivities; 2520 final int index = activities.indexOf(r); 2521 if (index < (activities.size() - 1)) { 2522 task.setFrontOfTask(); 2523 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2524 // If the caller asked that this activity (and all above it) 2525 // be cleared when the task is reset, don't lose that information, 2526 // but propagate it up to the next activity. 2527 ActivityRecord next = activities.get(index+1); 2528 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2529 } 2530 } 2531 2532 r.pauseKeyDispatchingLocked(); 2533 2534 adjustFocusedActivityLocked(r); 2535 2536 finishActivityResultsLocked(r, resultCode, resultData); 2537 2538 if (mResumedActivity == r) { 2539 boolean endTask = index <= 0; 2540 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2541 "Prepare close transition: finishing " + r); 2542 mWindowManager.prepareAppTransition(endTask 2543 ? AppTransition.TRANSIT_TASK_CLOSE 2544 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2545 2546 // Tell window manager to prepare for this one to be removed. 2547 mWindowManager.setAppVisibility(r.appToken, false); 2548 2549 if (mPausingActivity == null) { 2550 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2551 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2552 startPausingLocked(false, false); 2553 } 2554 2555 if (endTask) { 2556 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2557 } 2558 } else if (r.state != ActivityState.PAUSING) { 2559 // If the activity is PAUSING, we will complete the finish once 2560 // it is done pausing; else we can just directly finish it here. 2561 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2562 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2563 } else { 2564 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2565 } 2566 2567 return false; 2568 } 2569 2570 static final int FINISH_IMMEDIATELY = 0; 2571 static final int FINISH_AFTER_PAUSE = 1; 2572 static final int FINISH_AFTER_VISIBLE = 2; 2573 2574 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2575 // First things first: if this activity is currently visible, 2576 // and the resumed activity is not yet visible, then hold off on 2577 // finishing until the resumed one becomes visible. 2578 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2579 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2580 mStackSupervisor.mStoppingActivities.add(r); 2581 if (mStackSupervisor.mStoppingActivities.size() > 3 2582 || r.frontOfTask && mTaskHistory.size() <= 1) { 2583 // If we already have a few activities waiting to stop, 2584 // then give up on things going idle and start clearing 2585 // them out. Or if r is the last of activity of the last task the stack 2586 // will be empty and must be cleared immediately. 2587 mStackSupervisor.scheduleIdleLocked(); 2588 } else { 2589 mStackSupervisor.checkReadyForSleepLocked(); 2590 } 2591 } 2592 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2593 + " (finish requested)"); 2594 r.state = ActivityState.STOPPING; 2595 if (oomAdj) { 2596 mService.updateOomAdjLocked(); 2597 } 2598 return r; 2599 } 2600 2601 // make sure the record is cleaned out of other places. 2602 mStackSupervisor.mStoppingActivities.remove(r); 2603 mStackSupervisor.mGoingToSleepActivities.remove(r); 2604 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2605 if (mResumedActivity == r) { 2606 mResumedActivity = null; 2607 } 2608 final ActivityState prevState = r.state; 2609 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2610 r.state = ActivityState.FINISHING; 2611 2612 if (mode == FINISH_IMMEDIATELY 2613 || prevState == ActivityState.STOPPED 2614 || prevState == ActivityState.INITIALIZING) { 2615 // If this activity is already stopped, we can just finish 2616 // it right now. 2617 boolean activityRemoved = destroyActivityLocked(r, true, 2618 oomAdj, "finish-imm"); 2619 if (activityRemoved) { 2620 mStackSupervisor.resumeTopActivitiesLocked(); 2621 } 2622 return activityRemoved ? null : r; 2623 } 2624 2625 // Need to go through the full pause cycle to get this 2626 // activity into the stopped state and then finish it. 2627 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2628 mStackSupervisor.mFinishingActivities.add(r); 2629 r.resumeKeyDispatchingLocked(); 2630 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2631 return r; 2632 } 2633 2634 void finishAllActivitiesLocked() { 2635 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2636 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2637 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2638 final ActivityRecord r = activities.get(activityNdx); 2639 if (r.finishing) { 2640 continue; 2641 } 2642 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2643 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2644 } 2645 } 2646 } 2647 2648 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2649 Intent resultData) { 2650 final ActivityRecord srec = ActivityRecord.forToken(token); 2651 final TaskRecord task = srec.task; 2652 final ArrayList<ActivityRecord> activities = task.mActivities; 2653 final int start = activities.indexOf(srec); 2654 if (!mTaskHistory.contains(task) || (start < 0)) { 2655 return false; 2656 } 2657 int finishTo = start - 1; 2658 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2659 boolean foundParentInTask = false; 2660 final ComponentName dest = destIntent.getComponent(); 2661 if (start > 0 && dest != null) { 2662 for (int i = finishTo; i >= 0; i--) { 2663 ActivityRecord r = activities.get(i); 2664 if (r.info.packageName.equals(dest.getPackageName()) && 2665 r.info.name.equals(dest.getClassName())) { 2666 finishTo = i; 2667 parent = r; 2668 foundParentInTask = true; 2669 break; 2670 } 2671 } 2672 } 2673 2674 IActivityController controller = mService.mController; 2675 if (controller != null) { 2676 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2677 if (next != null) { 2678 // ask watcher if this is allowed 2679 boolean resumeOK = true; 2680 try { 2681 resumeOK = controller.activityResuming(next.packageName); 2682 } catch (RemoteException e) { 2683 mService.mController = null; 2684 Watchdog.getInstance().setActivityController(null); 2685 } 2686 2687 if (!resumeOK) { 2688 return false; 2689 } 2690 } 2691 } 2692 final long origId = Binder.clearCallingIdentity(); 2693 for (int i = start; i > finishTo; i--) { 2694 ActivityRecord r = activities.get(i); 2695 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2696 // Only return the supplied result for the first activity finished 2697 resultCode = Activity.RESULT_CANCELED; 2698 resultData = null; 2699 } 2700 2701 if (parent != null && foundParentInTask) { 2702 final int parentLaunchMode = parent.info.launchMode; 2703 final int destIntentFlags = destIntent.getFlags(); 2704 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2705 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2706 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2707 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2708 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2709 } else { 2710 try { 2711 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2712 destIntent.getComponent(), 0, srec.userId); 2713 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2714 null, aInfo, null, null, parent.appToken, null, 2715 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2716 0, null, true, null, null); 2717 foundParentInTask = res == ActivityManager.START_SUCCESS; 2718 } catch (RemoteException e) { 2719 foundParentInTask = false; 2720 } 2721 requestFinishActivityLocked(parent.appToken, resultCode, 2722 resultData, "navigate-up", true); 2723 } 2724 } 2725 Binder.restoreCallingIdentity(origId); 2726 return foundParentInTask; 2727 } 2728 /** 2729 * Perform the common clean-up of an activity record. This is called both 2730 * as part of destroyActivityLocked() (when destroying the client-side 2731 * representation) and cleaning things up as a result of its hosting 2732 * processing going away, in which case there is no remaining client-side 2733 * state to destroy so only the cleanup here is needed. 2734 */ 2735 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2736 boolean setState) { 2737 if (mResumedActivity == r) { 2738 mResumedActivity = null; 2739 } 2740 if (mPausingActivity == r) { 2741 mPausingActivity = null; 2742 } 2743 mService.clearFocusedActivity(r); 2744 2745 r.configDestroy = false; 2746 r.frozenBeforeDestroy = false; 2747 2748 if (setState) { 2749 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2750 r.state = ActivityState.DESTROYED; 2751 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2752 r.app = null; 2753 } 2754 2755 // Make sure this record is no longer in the pending finishes list. 2756 // This could happen, for example, if we are trimming activities 2757 // down to the max limit while they are still waiting to finish. 2758 mStackSupervisor.mFinishingActivities.remove(r); 2759 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2760 2761 // Remove any pending results. 2762 if (r.finishing && r.pendingResults != null) { 2763 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2764 PendingIntentRecord rec = apr.get(); 2765 if (rec != null) { 2766 mService.cancelIntentSenderLocked(rec, false); 2767 } 2768 } 2769 r.pendingResults = null; 2770 } 2771 2772 if (cleanServices) { 2773 cleanUpActivityServicesLocked(r); 2774 } 2775 2776 // Get rid of any pending idle timeouts. 2777 removeTimeoutsForActivityLocked(r); 2778 } 2779 2780 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2781 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2782 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2783 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2784 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2785 r.finishLaunchTickingLocked(); 2786 } 2787 2788 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2789 mStackSupervisor.removeChildActivityContainers(r); 2790 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2791 r.makeFinishing(); 2792 if (DEBUG_ADD_REMOVE) { 2793 RuntimeException here = new RuntimeException("here"); 2794 here.fillInStackTrace(); 2795 Slog.i(TAG, "Removing activity " + r + " from stack"); 2796 } 2797 r.takeFromHistory(); 2798 removeTimeoutsForActivityLocked(r); 2799 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2800 r.state = ActivityState.DESTROYED; 2801 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2802 r.app = null; 2803 mWindowManager.removeAppToken(r.appToken); 2804 if (VALIDATE_TOKENS) { 2805 validateAppTokensLocked(); 2806 } 2807 final TaskRecord task = r.task; 2808 if (task != null && task.removeActivity(r)) { 2809 if (DEBUG_STACK) Slog.i(TAG, 2810 "removeActivityFromHistoryLocked: last activity removed from " + this); 2811 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2812 mStackSupervisor.moveHomeToTop(); 2813 } 2814 removeTask(task); 2815 } 2816 cleanUpActivityServicesLocked(r); 2817 r.removeUriPermissionsLocked(); 2818 } 2819 2820 /** 2821 * Perform clean-up of service connections in an activity record. 2822 */ 2823 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2824 // Throw away any services that have been bound by this activity. 2825 if (r.connections != null) { 2826 Iterator<ConnectionRecord> it = r.connections.iterator(); 2827 while (it.hasNext()) { 2828 ConnectionRecord c = it.next(); 2829 mService.mServices.removeConnectionLocked(c, null, r); 2830 } 2831 r.connections = null; 2832 } 2833 } 2834 2835 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2836 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2837 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2838 mHandler.sendMessage(msg); 2839 } 2840 2841 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2842 boolean lastIsOpaque = false; 2843 boolean activityRemoved = false; 2844 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2845 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2846 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2847 final ActivityRecord r = activities.get(activityNdx); 2848 if (r.finishing) { 2849 continue; 2850 } 2851 if (r.fullscreen) { 2852 lastIsOpaque = true; 2853 } 2854 if (owner != null && r.app != owner) { 2855 continue; 2856 } 2857 if (!lastIsOpaque) { 2858 continue; 2859 } 2860 // We can destroy this one if we have its icicle saved and 2861 // it is not in the process of pausing/stopping/finishing. 2862 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2863 && r.haveState && !r.visible && r.stopped 2864 && r.state != ActivityState.DESTROYING 2865 && r.state != ActivityState.DESTROYED) { 2866 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2867 + " resumed=" + mResumedActivity 2868 + " pausing=" + mPausingActivity); 2869 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2870 activityRemoved = true; 2871 } 2872 } 2873 } 2874 } 2875 if (activityRemoved) { 2876 mStackSupervisor.resumeTopActivitiesLocked(); 2877 } 2878 } 2879 2880 /** 2881 * Destroy the current CLIENT SIDE instance of an activity. This may be 2882 * called both when actually finishing an activity, or when performing 2883 * a configuration switch where we destroy the current client-side object 2884 * but then create a new client-side object for this same HistoryRecord. 2885 */ 2886 final boolean destroyActivityLocked(ActivityRecord r, 2887 boolean removeFromApp, boolean oomAdj, String reason) { 2888 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2889 TAG, "Removing activity from " + reason + ": token=" + r 2890 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2891 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2892 r.userId, System.identityHashCode(r), 2893 r.task.taskId, r.shortComponentName, reason); 2894 2895 boolean removedFromHistory = false; 2896 2897 cleanUpActivityLocked(r, false, false); 2898 2899 final boolean hadApp = r.app != null; 2900 2901 if (hadApp) { 2902 if (removeFromApp) { 2903 r.app.activities.remove(r); 2904 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2905 mService.mHeavyWeightProcess = null; 2906 mService.mHandler.sendEmptyMessage( 2907 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2908 } 2909 if (r.app.activities.isEmpty()) { 2910 // No longer have activities, so update LRU list and oom adj. 2911 mService.updateLruProcessLocked(r.app, false, null); 2912 mService.updateOomAdjLocked(); 2913 } 2914 } 2915 2916 boolean skipDestroy = false; 2917 2918 try { 2919 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2920 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2921 r.configChangeFlags); 2922 } catch (Exception e) { 2923 // We can just ignore exceptions here... if the process 2924 // has crashed, our death notification will clean things 2925 // up. 2926 //Slog.w(TAG, "Exception thrown during finish", e); 2927 if (r.finishing) { 2928 removeActivityFromHistoryLocked(r); 2929 removedFromHistory = true; 2930 skipDestroy = true; 2931 } 2932 } 2933 2934 r.nowVisible = false; 2935 2936 // If the activity is finishing, we need to wait on removing it 2937 // from the list to give it a chance to do its cleanup. During 2938 // that time it may make calls back with its token so we need to 2939 // be able to find it on the list and so we don't want to remove 2940 // it from the list yet. Otherwise, we can just immediately put 2941 // it in the destroyed state since we are not removing it from the 2942 // list. 2943 if (r.finishing && !skipDestroy) { 2944 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2945 + " (destroy requested)"); 2946 r.state = ActivityState.DESTROYING; 2947 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2948 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2949 } else { 2950 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2951 r.state = ActivityState.DESTROYED; 2952 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2953 r.app = null; 2954 } 2955 } else { 2956 // remove this record from the history. 2957 if (r.finishing) { 2958 removeActivityFromHistoryLocked(r); 2959 removedFromHistory = true; 2960 } else { 2961 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2962 r.state = ActivityState.DESTROYED; 2963 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2964 r.app = null; 2965 } 2966 } 2967 2968 r.configChangeFlags = 0; 2969 2970 if (!mLRUActivities.remove(r) && hadApp) { 2971 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2972 } 2973 2974 return removedFromHistory; 2975 } 2976 2977 final void activityDestroyedLocked(IBinder token) { 2978 final long origId = Binder.clearCallingIdentity(); 2979 try { 2980 ActivityRecord r = ActivityRecord.forToken(token); 2981 if (r != null) { 2982 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2983 } 2984 2985 if (isInStackLocked(token) != null) { 2986 if (r.state == ActivityState.DESTROYING) { 2987 cleanUpActivityLocked(r, true, false); 2988 removeActivityFromHistoryLocked(r); 2989 } 2990 } 2991 mStackSupervisor.resumeTopActivitiesLocked(); 2992 } finally { 2993 Binder.restoreCallingIdentity(origId); 2994 } 2995 } 2996 2997 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 2998 ProcessRecord app, String listName) { 2999 int i = list.size(); 3000 if (DEBUG_CLEANUP) Slog.v( 3001 TAG, "Removing app " + app + " from list " + listName 3002 + " with " + i + " entries"); 3003 while (i > 0) { 3004 i--; 3005 ActivityRecord r = list.get(i); 3006 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3007 if (r.app == app) { 3008 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3009 list.remove(i); 3010 removeTimeoutsForActivityLocked(r); 3011 } 3012 } 3013 } 3014 3015 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3016 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3017 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3018 "mStoppingActivities"); 3019 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3020 "mGoingToSleepActivities"); 3021 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3022 "mWaitingVisibleActivities"); 3023 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3024 "mFinishingActivities"); 3025 3026 boolean hasVisibleActivities = false; 3027 3028 // Clean out the history list. 3029 int i = numActivities(); 3030 if (DEBUG_CLEANUP) Slog.v( 3031 TAG, "Removing app " + app + " from history with " + i + " entries"); 3032 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3033 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3034 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3035 final ActivityRecord r = activities.get(activityNdx); 3036 --i; 3037 if (DEBUG_CLEANUP) Slog.v( 3038 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3039 if (r.app == app) { 3040 boolean remove; 3041 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3042 // Don't currently have state for the activity, or 3043 // it is finishing -- always remove it. 3044 remove = true; 3045 } else if (r.launchCount > 2 && 3046 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3047 // We have launched this activity too many times since it was 3048 // able to run, so give up and remove it. 3049 remove = true; 3050 } else { 3051 // The process may be gone, but the activity lives on! 3052 remove = false; 3053 } 3054 if (remove) { 3055 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3056 RuntimeException here = new RuntimeException("here"); 3057 here.fillInStackTrace(); 3058 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3059 + ": haveState=" + r.haveState 3060 + " stateNotNeeded=" + r.stateNotNeeded 3061 + " finishing=" + r.finishing 3062 + " state=" + r.state, here); 3063 } 3064 if (!r.finishing) { 3065 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3066 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3067 r.userId, System.identityHashCode(r), 3068 r.task.taskId, r.shortComponentName, 3069 "proc died without state saved"); 3070 if (r.state == ActivityState.RESUMED) { 3071 mService.updateUsageStats(r, false); 3072 } 3073 } 3074 removeActivityFromHistoryLocked(r); 3075 3076 } else { 3077 // We have the current state for this activity, so 3078 // it can be restarted later when needed. 3079 if (localLOGV) Slog.v( 3080 TAG, "Keeping entry, setting app to null"); 3081 if (r.visible) { 3082 hasVisibleActivities = true; 3083 } 3084 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3085 + r); 3086 r.app = null; 3087 r.nowVisible = false; 3088 if (!r.haveState) { 3089 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3090 "App died, clearing saved state of " + r); 3091 r.icicle = null; 3092 } 3093 } 3094 3095 cleanUpActivityLocked(r, true, true); 3096 } 3097 } 3098 } 3099 3100 return hasVisibleActivities; 3101 } 3102 3103 final void updateTransitLocked(int transit, Bundle options) { 3104 if (options != null) { 3105 ActivityRecord r = topRunningActivityLocked(null); 3106 if (r != null && r.state != ActivityState.RESUMED) { 3107 r.updateOptionsLocked(options); 3108 } else { 3109 ActivityOptions.abort(options); 3110 } 3111 } 3112 mWindowManager.prepareAppTransition(transit, false); 3113 } 3114 3115 void moveHomeTaskToTop() { 3116 final int top = mTaskHistory.size() - 1; 3117 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3118 final TaskRecord task = mTaskHistory.get(taskNdx); 3119 if (task.isHomeTask()) { 3120 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3121 mTaskHistory.remove(taskNdx); 3122 mTaskHistory.add(top, task); 3123 mWindowManager.moveTaskToTop(task.taskId); 3124 return; 3125 } 3126 } 3127 } 3128 3129 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3130 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3131 3132 final int numTasks = mTaskHistory.size(); 3133 final int index = mTaskHistory.indexOf(tr); 3134 if (numTasks == 0 || index < 0) { 3135 // nothing to do! 3136 if (reason != null && 3137 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3138 ActivityOptions.abort(options); 3139 } else { 3140 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3141 } 3142 return; 3143 } 3144 3145 moveToFront(); 3146 3147 // Shift all activities with this task up to the top 3148 // of the stack, keeping them in the same internal order. 3149 insertTaskAtTop(tr); 3150 3151 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3152 if (reason != null && 3153 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3154 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3155 ActivityRecord r = topRunningActivityLocked(null); 3156 if (r != null) { 3157 mNoAnimActivities.add(r); 3158 } 3159 ActivityOptions.abort(options); 3160 } else { 3161 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3162 } 3163 3164 mWindowManager.moveTaskToTop(tr.taskId); 3165 3166 mStackSupervisor.resumeTopActivitiesLocked(); 3167 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3168 3169 if (VALIDATE_TOKENS) { 3170 validateAppTokensLocked(); 3171 } 3172 } 3173 3174 /** 3175 * Worker method for rearranging history stack. Implements the function of moving all 3176 * activities for a specific task (gathering them if disjoint) into a single group at the 3177 * bottom of the stack. 3178 * 3179 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3180 * to premeptively cancel the move. 3181 * 3182 * @param taskId The taskId to collect and move to the bottom. 3183 * @return Returns true if the move completed, false if not. 3184 */ 3185 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3186 final TaskRecord tr = taskForIdLocked(taskId); 3187 if (tr == null) { 3188 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3189 return false; 3190 } 3191 3192 Slog.i(TAG, "moveTaskToBack: " + tr); 3193 3194 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3195 3196 // If we have a watcher, preflight the move before committing to it. First check 3197 // for *other* available tasks, but if none are available, then try again allowing the 3198 // current task to be selected. 3199 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3200 ActivityRecord next = topRunningActivityLocked(null, taskId); 3201 if (next == null) { 3202 next = topRunningActivityLocked(null, 0); 3203 } 3204 if (next != null) { 3205 // ask watcher if this is allowed 3206 boolean moveOK = true; 3207 try { 3208 moveOK = mService.mController.activityResuming(next.packageName); 3209 } catch (RemoteException e) { 3210 mService.mController = null; 3211 Watchdog.getInstance().setActivityController(null); 3212 } 3213 if (!moveOK) { 3214 return false; 3215 } 3216 } 3217 } 3218 3219 if (DEBUG_TRANSITION) Slog.v(TAG, 3220 "Prepare to back transition: task=" + taskId); 3221 3222 mTaskHistory.remove(tr); 3223 mTaskHistory.add(0, tr); 3224 3225 // There is an assumption that moving a task to the back moves it behind the home activity. 3226 // We make sure here that some activity in the stack will launch home. 3227 ActivityRecord lastActivity = null; 3228 int numTasks = mTaskHistory.size(); 3229 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3230 final TaskRecord task = mTaskHistory.get(taskNdx); 3231 if (task.mOnTopOfHome) { 3232 break; 3233 } 3234 if (taskNdx == 1) { 3235 // Set the last task before tr to go to home. 3236 task.mOnTopOfHome = true; 3237 } 3238 } 3239 3240 if (reason != null && 3241 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3242 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3243 ActivityRecord r = topRunningActivityLocked(null); 3244 if (r != null) { 3245 mNoAnimActivities.add(r); 3246 } 3247 } else { 3248 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3249 } 3250 mWindowManager.moveTaskToBottom(taskId); 3251 3252 if (VALIDATE_TOKENS) { 3253 validateAppTokensLocked(); 3254 } 3255 3256 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3257 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3258 tr.mOnTopOfHome = false; 3259 return mStackSupervisor.resumeHomeActivity(null); 3260 } 3261 3262 mStackSupervisor.resumeTopActivitiesLocked(); 3263 return true; 3264 } 3265 3266 static final void logStartActivity(int tag, ActivityRecord r, 3267 TaskRecord task) { 3268 final Uri data = r.intent.getData(); 3269 final String strData = data != null ? data.toSafeString() : null; 3270 3271 EventLog.writeEvent(tag, 3272 r.userId, System.identityHashCode(r), task.taskId, 3273 r.shortComponentName, r.intent.getAction(), 3274 r.intent.getType(), strData, r.intent.getFlags()); 3275 } 3276 3277 /** 3278 * Make sure the given activity matches the current configuration. Returns 3279 * false if the activity had to be destroyed. Returns true if the 3280 * configuration is the same, or the activity will remain running as-is 3281 * for whatever reason. Ensures the HistoryRecord is updated with the 3282 * correct configuration and all other bookkeeping is handled. 3283 */ 3284 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3285 int globalChanges) { 3286 if (mConfigWillChange) { 3287 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3288 "Skipping config check (will change): " + r); 3289 return true; 3290 } 3291 3292 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3293 "Ensuring correct configuration: " + r); 3294 3295 // Short circuit: if the two configurations are the exact same 3296 // object (the common case), then there is nothing to do. 3297 Configuration newConfig = mService.mConfiguration; 3298 if (r.configuration == newConfig && !r.forceNewConfig) { 3299 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3300 "Configuration unchanged in " + r); 3301 return true; 3302 } 3303 3304 // We don't worry about activities that are finishing. 3305 if (r.finishing) { 3306 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3307 "Configuration doesn't matter in finishing " + r); 3308 r.stopFreezingScreenLocked(false); 3309 return true; 3310 } 3311 3312 // Okay we now are going to make this activity have the new config. 3313 // But then we need to figure out how it needs to deal with that. 3314 Configuration oldConfig = r.configuration; 3315 r.configuration = newConfig; 3316 3317 // Determine what has changed. May be nothing, if this is a config 3318 // that has come back from the app after going idle. In that case 3319 // we just want to leave the official config object now in the 3320 // activity and do nothing else. 3321 final int changes = oldConfig.diff(newConfig); 3322 if (changes == 0 && !r.forceNewConfig) { 3323 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3324 "Configuration no differences in " + r); 3325 return true; 3326 } 3327 3328 // If the activity isn't currently running, just leave the new 3329 // configuration and it will pick that up next time it starts. 3330 if (r.app == null || r.app.thread == null) { 3331 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3332 "Configuration doesn't matter not running " + r); 3333 r.stopFreezingScreenLocked(false); 3334 r.forceNewConfig = false; 3335 return true; 3336 } 3337 3338 // Figure out how to handle the changes between the configurations. 3339 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3340 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3341 + Integer.toHexString(changes) + ", handles=0x" 3342 + Integer.toHexString(r.info.getRealConfigChanged()) 3343 + ", newConfig=" + newConfig); 3344 } 3345 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3346 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3347 r.configChangeFlags |= changes; 3348 r.startFreezingScreenLocked(r.app, globalChanges); 3349 r.forceNewConfig = false; 3350 if (r.app == null || r.app.thread == null) { 3351 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3352 "Config is destroying non-running " + r); 3353 destroyActivityLocked(r, true, false, "config"); 3354 } else if (r.state == ActivityState.PAUSING) { 3355 // A little annoying: we are waiting for this activity to 3356 // finish pausing. Let's not do anything now, but just 3357 // flag that it needs to be restarted when done pausing. 3358 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3359 "Config is skipping already pausing " + r); 3360 r.configDestroy = true; 3361 return true; 3362 } else if (r.state == ActivityState.RESUMED) { 3363 // Try to optimize this case: the configuration is changing 3364 // and we need to restart the top, resumed activity. 3365 // Instead of doing the normal handshaking, just say 3366 // "restart!". 3367 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3368 "Config is relaunching resumed " + r); 3369 relaunchActivityLocked(r, r.configChangeFlags, true); 3370 r.configChangeFlags = 0; 3371 } else { 3372 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3373 "Config is relaunching non-resumed " + r); 3374 relaunchActivityLocked(r, r.configChangeFlags, false); 3375 r.configChangeFlags = 0; 3376 } 3377 3378 // All done... tell the caller we weren't able to keep this 3379 // activity around. 3380 return false; 3381 } 3382 3383 // Default case: the activity can handle this new configuration, so 3384 // hand it over. Note that we don't need to give it the new 3385 // configuration, since we always send configuration changes to all 3386 // process when they happen so it can just use whatever configuration 3387 // it last got. 3388 if (r.app != null && r.app.thread != null) { 3389 try { 3390 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3391 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3392 } catch (RemoteException e) { 3393 // If process died, whatever. 3394 } 3395 } 3396 r.stopFreezingScreenLocked(false); 3397 3398 return true; 3399 } 3400 3401 private boolean relaunchActivityLocked(ActivityRecord r, 3402 int changes, boolean andResume) { 3403 List<ResultInfo> results = null; 3404 List<Intent> newIntents = null; 3405 if (andResume) { 3406 results = r.results; 3407 newIntents = r.newIntents; 3408 } 3409 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3410 + " with results=" + results + " newIntents=" + newIntents 3411 + " andResume=" + andResume); 3412 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3413 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3414 r.task.taskId, r.shortComponentName); 3415 3416 r.startFreezingScreenLocked(r.app, 0); 3417 3418 mStackSupervisor.removeChildActivityContainers(r); 3419 3420 try { 3421 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3422 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3423 + r); 3424 r.forceNewConfig = false; 3425 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3426 changes, !andResume, new Configuration(mService.mConfiguration)); 3427 // Note: don't need to call pauseIfSleepingLocked() here, because 3428 // the caller will only pass in 'andResume' if this activity is 3429 // currently resumed, which implies we aren't sleeping. 3430 } catch (RemoteException e) { 3431 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3432 } 3433 3434 if (andResume) { 3435 r.results = null; 3436 r.newIntents = null; 3437 r.state = ActivityState.RESUMED; 3438 } else { 3439 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3440 r.state = ActivityState.PAUSED; 3441 } 3442 3443 return true; 3444 } 3445 3446 boolean willActivityBeVisibleLocked(IBinder token) { 3447 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3448 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3449 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3450 final ActivityRecord r = activities.get(activityNdx); 3451 if (r.appToken == token) { 3452 return true; 3453 } 3454 if (r.fullscreen && !r.finishing) { 3455 return false; 3456 } 3457 } 3458 } 3459 final ActivityRecord r = ActivityRecord.forToken(token); 3460 if (r == null) { 3461 return false; 3462 } 3463 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3464 + " would have returned true for r=" + r); 3465 return !r.finishing; 3466 } 3467 3468 void closeSystemDialogsLocked() { 3469 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3470 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3471 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3472 final ActivityRecord r = activities.get(activityNdx); 3473 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3474 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3475 } 3476 } 3477 } 3478 } 3479 3480 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3481 boolean didSomething = false; 3482 TaskRecord lastTask = null; 3483 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3484 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3485 int numActivities = activities.size(); 3486 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3487 ActivityRecord r = activities.get(activityNdx); 3488 final boolean samePackage = r.packageName.equals(name) 3489 || (name == null && r.userId == userId); 3490 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3491 && (samePackage || r.task == lastTask) 3492 && (r.app == null || evenPersistent || !r.app.persistent)) { 3493 if (!doit) { 3494 if (r.finishing) { 3495 // If this activity is just finishing, then it is not 3496 // interesting as far as something to stop. 3497 continue; 3498 } 3499 return true; 3500 } 3501 didSomething = true; 3502 Slog.i(TAG, " Force finishing activity " + r); 3503 if (samePackage) { 3504 if (r.app != null) { 3505 r.app.removed = true; 3506 } 3507 r.app = null; 3508 } 3509 lastTask = r.task; 3510 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3511 true)) { 3512 // r has been deleted from mActivities, accommodate. 3513 --numActivities; 3514 --activityNdx; 3515 } 3516 } 3517 } 3518 } 3519 return didSomething; 3520 } 3521 3522 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3523 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3524 final TaskRecord task = mTaskHistory.get(taskNdx); 3525 ActivityRecord r = null; 3526 ActivityRecord top = null; 3527 int numActivities = 0; 3528 int numRunning = 0; 3529 final ArrayList<ActivityRecord> activities = task.mActivities; 3530 if (activities.isEmpty()) { 3531 continue; 3532 } 3533 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3534 continue; 3535 } 3536 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3537 r = activities.get(activityNdx); 3538 3539 // Initialize state for next task if needed. 3540 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3541 top = r; 3542 numActivities = numRunning = 0; 3543 } 3544 3545 // Add 'r' into the current task. 3546 numActivities++; 3547 if (r.app != null && r.app.thread != null) { 3548 numRunning++; 3549 } 3550 3551 if (localLOGV) Slog.v( 3552 TAG, r.intent.getComponent().flattenToShortString() 3553 + ": task=" + r.task); 3554 } 3555 3556 RunningTaskInfo ci = new RunningTaskInfo(); 3557 ci.id = task.taskId; 3558 ci.baseActivity = r.intent.getComponent(); 3559 ci.topActivity = top.intent.getComponent(); 3560 ci.lastActiveTime = task.lastActiveTime; 3561 3562 if (top.thumbHolder != null) { 3563 ci.description = top.thumbHolder.lastDescription; 3564 } 3565 ci.numActivities = numActivities; 3566 ci.numRunning = numRunning; 3567 //System.out.println( 3568 // "#" + maxNum + ": " + " descr=" + ci.description); 3569 list.add(ci); 3570 } 3571 } 3572 3573 public void unhandledBackLocked() { 3574 final int top = mTaskHistory.size() - 1; 3575 if (DEBUG_SWITCH) Slog.d( 3576 TAG, "Performing unhandledBack(): top activity at " + top); 3577 if (top >= 0) { 3578 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3579 int activityTop = activities.size() - 1; 3580 if (activityTop > 0) { 3581 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3582 "unhandled-back", true); 3583 } 3584 } 3585 } 3586 3587 /** 3588 * Reset local parameters because an app's activity died. 3589 * @param app The app of the activity that died. 3590 * @return result from removeHistoryRecordsForAppLocked. 3591 */ 3592 boolean handleAppDiedLocked(ProcessRecord app) { 3593 if (mPausingActivity != null && mPausingActivity.app == app) { 3594 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3595 "App died while pausing: " + mPausingActivity); 3596 mPausingActivity = null; 3597 } 3598 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3599 mLastPausedActivity = null; 3600 mLastNoHistoryActivity = null; 3601 } 3602 3603 return removeHistoryRecordsForAppLocked(app); 3604 } 3605 3606 void handleAppCrashLocked(ProcessRecord app) { 3607 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3608 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3609 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3610 final ActivityRecord r = activities.get(activityNdx); 3611 if (r.app == app) { 3612 Slog.w(TAG, " Force finishing activity " 3613 + r.intent.getComponent().flattenToShortString()); 3614 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3615 } 3616 } 3617 } 3618 } 3619 3620 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3621 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3622 boolean printed = false; 3623 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3624 final TaskRecord task = mTaskHistory.get(taskNdx); 3625 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3626 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3627 dumpClient, dumpPackage, needSep, header, 3628 " Task id #" + task.taskId); 3629 if (printed) { 3630 header = null; 3631 } 3632 } 3633 return printed; 3634 } 3635 3636 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3637 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3638 3639 if ("all".equals(name)) { 3640 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3641 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3642 } 3643 } else if ("top".equals(name)) { 3644 final int top = mTaskHistory.size() - 1; 3645 if (top >= 0) { 3646 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3647 int listTop = list.size() - 1; 3648 if (listTop >= 0) { 3649 activities.add(list.get(listTop)); 3650 } 3651 } 3652 } else { 3653 ItemMatcher matcher = new ItemMatcher(); 3654 matcher.build(name); 3655 3656 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3657 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3658 if (matcher.match(r1, r1.intent.getComponent())) { 3659 activities.add(r1); 3660 } 3661 } 3662 } 3663 } 3664 3665 return activities; 3666 } 3667 3668 ActivityRecord restartPackage(String packageName) { 3669 ActivityRecord starting = topRunningActivityLocked(null); 3670 3671 // All activities that came from the package must be 3672 // restarted as if there was a config change. 3673 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3674 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3675 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3676 final ActivityRecord a = activities.get(activityNdx); 3677 if (a.info.packageName.equals(packageName)) { 3678 a.forceNewConfig = true; 3679 if (starting != null && a == starting && a.visible) { 3680 a.startFreezingScreenLocked(starting.app, 3681 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3682 } 3683 } 3684 } 3685 } 3686 3687 return starting; 3688 } 3689 3690 void removeTask(TaskRecord task) { 3691 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3692 mWindowManager.removeTask(task.taskId); 3693 final ActivityRecord r = mResumedActivity; 3694 if (r != null && r.task == task) { 3695 mResumedActivity = null; 3696 } 3697 3698 final int taskNdx = mTaskHistory.indexOf(task); 3699 final int topTaskNdx = mTaskHistory.size() - 1; 3700 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3701 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3702 } 3703 mTaskHistory.remove(task); 3704 if (task.voiceInteractor != null) { 3705 // This task was a voice interaction, so it should not remain on the 3706 // recent tasks list. 3707 mService.mRecentTasks.remove(task); 3708 } 3709 3710 if (mTaskHistory.isEmpty()) { 3711 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3712 if (isOnHomeDisplay()) { 3713 mStackSupervisor.moveHomeStack(!isHomeStack()); 3714 } 3715 if (mStacks != null) { 3716 mStacks.remove(this); 3717 mStacks.add(0, this); 3718 } 3719 } 3720 } 3721 3722 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3723 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3724 boolean toTop) { 3725 TaskRecord task = new TaskRecord(taskId, info, intent, voiceSession, voiceInteractor); 3726 addTask(task, toTop); 3727 return task; 3728 } 3729 3730 ArrayList<TaskRecord> getAllTasks() { 3731 return new ArrayList<TaskRecord>(mTaskHistory); 3732 } 3733 3734 void addTask(final TaskRecord task, final boolean toTop) { 3735 task.stack = this; 3736 if (toTop) { 3737 insertTaskAtTop(task); 3738 } else { 3739 mTaskHistory.add(0, task); 3740 } 3741 } 3742 3743 public int getStackId() { 3744 return mStackId; 3745 } 3746 3747 @Override 3748 public String toString() { 3749 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3750 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3751 } 3752} 3753