ActivityStack.java revision f6ead5d62e62ff9a466bd4cbbea77390ce00605b
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 com.android.internal.os.BatteryStatsImpl; 42import com.android.server.Watchdog; 43import com.android.server.am.ActivityManagerService.ItemMatcher; 44import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 45import com.android.server.wm.AppTransition; 46import com.android.server.wm.TaskGroup; 47import com.android.server.wm.WindowManagerService; 48 49import android.app.Activity; 50import android.app.ActivityManager; 51import android.app.ActivityOptions; 52import android.app.AppGlobals; 53import android.app.IActivityController; 54import android.app.IThumbnailReceiver; 55import android.app.ResultInfo; 56import android.app.ActivityManager.RunningTaskInfo; 57import android.content.ComponentName; 58import android.content.Intent; 59import android.content.pm.ActivityInfo; 60import android.content.pm.PackageManager; 61import android.content.res.Configuration; 62import android.content.res.Resources; 63import android.graphics.Bitmap; 64import android.net.Uri; 65import android.os.Binder; 66import android.os.Bundle; 67import android.os.Debug; 68import android.os.Handler; 69import android.os.IBinder; 70import android.os.Looper; 71import android.os.Message; 72import android.os.RemoteException; 73import android.os.SystemClock; 74import android.os.SystemProperties; 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.userId != userId) { 505 // Looking for a different task. 506 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 507 continue; 508 } 509 final ActivityRecord r = task.getTopActivity(); 510 if (r == null || r.finishing || r.userId != userId || 511 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 512 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 513 continue; 514 } 515 516 final Intent taskIntent = task.intent; 517 final Intent affinityIntent = task.affinityIntent; 518 final boolean taskIsDocument; 519 final Uri taskDocumentData; 520 if (taskIntent != null && taskIntent.isDocument()) { 521 taskIsDocument = true; 522 taskDocumentData = taskIntent.getData(); 523 } else if (affinityIntent != null && affinityIntent.isDocument()) { 524 taskIsDocument = true; 525 taskDocumentData = affinityIntent.getData(); 526 } else { 527 taskIsDocument = false; 528 taskDocumentData = null; 529 } 530 531 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 532 + taskIntent.getComponent().flattenToShortString() 533 + "/aff=" + r.task.affinity + " to new cls=" 534 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 535 if (!isDocument && !taskIsDocument && task.affinity != null) { 536 if (task.affinity.equals(target.taskAffinity)) { 537 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 538 return r; 539 } 540 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 541 Objects.equals(documentData, taskDocumentData)) { 542 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 543 //dump(); 544 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 545 + r.intent); 546 return r; 547 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 548 Objects.equals(documentData, taskDocumentData)) { 549 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 550 //dump(); 551 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 552 + r.intent); 553 return r; 554 } else if (DEBUG_TASKS) { 555 Slog.d(TAG, "Not a match: " + task); 556 } 557 } 558 559 return null; 560 } 561 562 /** 563 * Returns the first activity (starting from the top of the stack) that 564 * is the same as the given activity. Returns null if no such activity 565 * is found. 566 */ 567 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 568 ComponentName cls = intent.getComponent(); 569 if (info.targetActivity != null) { 570 cls = new ComponentName(info.packageName, info.targetActivity); 571 } 572 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 573 574 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 575 TaskRecord task = mTaskHistory.get(taskNdx); 576 if (!isCurrentProfileLocked(task.userId)) { 577 return null; 578 } 579 final ArrayList<ActivityRecord> activities = task.mActivities; 580 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 581 ActivityRecord r = activities.get(activityNdx); 582 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 583 //Slog.i(TAG, "Found matching class!"); 584 //dump(); 585 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 586 return r; 587 } 588 } 589 } 590 591 return null; 592 } 593 594 /* 595 * Move the activities around in the stack to bring a user to the foreground. 596 */ 597 final void switchUserLocked(int userId) { 598 if (mCurrentUser == userId) { 599 return; 600 } 601 mCurrentUser = userId; 602 603 // Move userId's tasks to the top. 604 int index = mTaskHistory.size(); 605 for (int i = 0; i < index; ) { 606 TaskRecord task = mTaskHistory.get(i); 607 if (isCurrentProfileLocked(task.userId)) { 608 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 609 " moving " + task + " to top"); 610 mTaskHistory.remove(i); 611 mTaskHistory.add(task); 612 --index; 613 // Use same value for i. 614 } else { 615 ++i; 616 } 617 } 618 if (VALIDATE_TOKENS) { 619 validateAppTokensLocked(); 620 } 621 } 622 623 void minimalResumeActivityLocked(ActivityRecord r) { 624 r.state = ActivityState.RESUMED; 625 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 626 + " (starting new instance)"); 627 r.stopped = false; 628 mResumedActivity = r; 629 r.task.touchActiveTime(); 630 mService.addRecentTaskLocked(r.task); 631 completeResumeLocked(r); 632 mStackSupervisor.checkReadyForSleepLocked(); 633 setLaunchTime(r); 634 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 635 } 636 637 private void startLaunchTraces() { 638 if (mFullyDrawnStartTime != 0) { 639 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 640 } 641 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 642 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 643 } 644 645 private void stopFullyDrawnTraceIfNeeded() { 646 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 647 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 648 mFullyDrawnStartTime = 0; 649 } 650 } 651 652 void setLaunchTime(ActivityRecord r) { 653 if (r.displayStartTime == 0) { 654 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 655 if (mLaunchStartTime == 0) { 656 startLaunchTraces(); 657 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 658 } 659 } else if (mLaunchStartTime == 0) { 660 startLaunchTraces(); 661 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 662 } 663 } 664 665 void clearLaunchTime(ActivityRecord r) { 666 // Make sure that there is no activity waiting for this to launch. 667 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 668 r.displayStartTime = r.fullyDrawnStartTime = 0; 669 } else { 670 mStackSupervisor.removeTimeoutsForActivityLocked(r); 671 mStackSupervisor.scheduleIdleTimeoutLocked(r); 672 } 673 } 674 675 void awakeFromSleepingLocked() { 676 // Ensure activities are no longer sleeping. 677 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 678 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 679 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 680 activities.get(activityNdx).setSleeping(false); 681 } 682 } 683 } 684 685 /** 686 * @return true if something must be done before going to sleep. 687 */ 688 boolean checkReadyForSleepLocked() { 689 if (mResumedActivity != null) { 690 // Still have something resumed; can't sleep until it is paused. 691 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 692 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 693 startPausingLocked(false, true); 694 return true; 695 } 696 if (mPausingActivity != null) { 697 // Still waiting for something to pause; can't sleep yet. 698 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 699 return true; 700 } 701 702 return false; 703 } 704 705 void goToSleep() { 706 ensureActivitiesVisibleLocked(null, 0); 707 708 // Make sure any stopped but visible activities are now sleeping. 709 // This ensures that the activity's onStop() is called. 710 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 711 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 712 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 713 final ActivityRecord r = activities.get(activityNdx); 714 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 715 r.setSleeping(true); 716 } 717 } 718 } 719 } 720 721 public final Bitmap screenshotActivities(ActivityRecord who) { 722 if (who.noDisplay) { 723 return null; 724 } 725 726 TaskRecord tr = who.task; 727 if (mService.getMostRecentTask() != tr && tr.intent != null && 728 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 729 // If this task is being excluded from recents, we don't want to take 730 // the expense of capturing a thumbnail, since we will never show it. 731 return null; 732 } 733 734 Resources res = mService.mContext.getResources(); 735 int w = mThumbnailWidth; 736 int h = mThumbnailHeight; 737 if (w < 0) { 738 if (SystemProperties.getBoolean("persist.recents.use_alternate", false)) { 739 mThumbnailWidth = w = 740 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 741 mThumbnailHeight = h = 742 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 743 } else { 744 mThumbnailWidth = w = 745 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 746 mThumbnailHeight = h = 747 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 748 } 749 } 750 751 if (w > 0) { 752 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 753 || mLastScreenshotActivity.state == ActivityState.RESUMED 754 || mLastScreenshotBitmap.getWidth() != w 755 || mLastScreenshotBitmap.getHeight() != h) { 756 mLastScreenshotActivity = who; 757 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 758 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 759 } 760 if (mLastScreenshotBitmap != null) { 761 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 762 } 763 } 764 return null; 765 } 766 767 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 768 if (mPausingActivity != null) { 769 Slog.e(TAG, "Trying to pause when pause is already pending for " 770 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 771 } 772 ActivityRecord prev = mResumedActivity; 773 if (prev == null) { 774 Slog.e(TAG, "Trying to pause when nothing is resumed", 775 new RuntimeException("here").fillInStackTrace()); 776 mStackSupervisor.resumeTopActivitiesLocked(); 777 return; 778 } 779 780 if (mActivityContainer.mParentActivity == null) { 781 // Top level stack, not a child. Look for child stacks. 782 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 783 } 784 785 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 786 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 787 mResumedActivity = null; 788 mPausingActivity = prev; 789 mLastPausedActivity = prev; 790 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 791 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 792 prev.state = ActivityState.PAUSING; 793 prev.task.touchActiveTime(); 794 clearLaunchTime(prev); 795 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 796 if (next == null || next.noDisplay || next.task != prev.task) { 797 prev.updateThumbnail(screenshotActivities(prev), null); 798 } 799 stopFullyDrawnTraceIfNeeded(); 800 801 mService.updateCpuStats(); 802 803 if (prev.app != null && prev.app.thread != null) { 804 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 805 try { 806 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 807 prev.userId, System.identityHashCode(prev), 808 prev.shortComponentName); 809 mService.updateUsageStats(prev, false); 810 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 811 userLeaving, prev.configChangeFlags); 812 } catch (Exception e) { 813 // Ignore exception, if process died other code will cleanup. 814 Slog.w(TAG, "Exception thrown during pause", e); 815 mPausingActivity = null; 816 mLastPausedActivity = null; 817 mLastNoHistoryActivity = null; 818 } 819 } else { 820 mPausingActivity = null; 821 mLastPausedActivity = null; 822 mLastNoHistoryActivity = null; 823 } 824 825 // If we are not going to sleep, we want to ensure the device is 826 // awake until the next activity is started. 827 if (!mService.isSleepingOrShuttingDown()) { 828 mStackSupervisor.acquireLaunchWakelock(); 829 } 830 831 if (mPausingActivity != null) { 832 // Have the window manager pause its key dispatching until the new 833 // activity has started. If we're pausing the activity just because 834 // the screen is being turned off and the UI is sleeping, don't interrupt 835 // key dispatch; the same activity will pick it up again on wakeup. 836 if (!uiSleeping) { 837 prev.pauseKeyDispatchingLocked(); 838 } else { 839 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 840 } 841 842 // Schedule a pause timeout in case the app doesn't respond. 843 // We don't give it much time because this directly impacts the 844 // responsiveness seen by the user. 845 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 846 msg.obj = prev; 847 prev.pauseTime = SystemClock.uptimeMillis(); 848 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 849 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 850 } else { 851 // This activity failed to schedule the 852 // pause, so just treat it as being paused now. 853 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 854 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 855 } 856 } 857 858 final void activityPausedLocked(IBinder token, boolean timeout) { 859 if (DEBUG_PAUSE) Slog.v( 860 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 861 862 final ActivityRecord r = isInStackLocked(token); 863 if (r != null) { 864 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 865 if (mPausingActivity == r) { 866 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 867 + (timeout ? " (due to timeout)" : " (pause complete)")); 868 r.state = ActivityState.PAUSED; 869 completePauseLocked(); 870 } else { 871 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 872 r.userId, System.identityHashCode(r), r.shortComponentName, 873 mPausingActivity != null 874 ? mPausingActivity.shortComponentName : "(none)"); 875 } 876 } 877 } 878 879 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 880 CharSequence description) { 881 if (r.state != ActivityState.STOPPING) { 882 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 883 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 884 return; 885 } 886 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 887 if (icicle != null) { 888 // If icicle is null, this is happening due to a timeout, so we 889 // haven't really saved the state. 890 r.icicle = icicle; 891 r.haveState = true; 892 r.launchCount = 0; 893 r.updateThumbnail(thumbnail, description); 894 } 895 if (!r.stopped) { 896 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 897 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 898 r.stopped = true; 899 r.state = ActivityState.STOPPED; 900 if (r.finishing) { 901 r.clearOptionsLocked(); 902 } else { 903 if (r.configDestroy) { 904 destroyActivityLocked(r, true, false, "stop-config"); 905 mStackSupervisor.resumeTopActivitiesLocked(); 906 } else { 907 mStackSupervisor.updatePreviousProcessLocked(r); 908 } 909 } 910 } 911 } 912 913 private void completePauseLocked() { 914 ActivityRecord prev = mPausingActivity; 915 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 916 917 if (prev != null) { 918 if (prev.finishing) { 919 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 920 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 921 } else if (prev.app != null) { 922 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 923 if (prev.waitingVisible) { 924 prev.waitingVisible = false; 925 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 926 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 927 TAG, "Complete pause, no longer waiting: " + prev); 928 } 929 if (prev.configDestroy) { 930 // The previous is being paused because the configuration 931 // is changing, which means it is actually stopping... 932 // To juggle the fact that we are also starting a new 933 // instance right now, we need to first completely stop 934 // the current instance before starting the new one. 935 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 936 destroyActivityLocked(prev, true, false, "pause-config"); 937 } else { 938 mStackSupervisor.mStoppingActivities.add(prev); 939 if (mStackSupervisor.mStoppingActivities.size() > 3 || 940 prev.frontOfTask && mTaskHistory.size() <= 1) { 941 // If we already have a few activities waiting to stop, 942 // then give up on things going idle and start clearing 943 // them out. Or if r is the last of activity of the last task the stack 944 // will be empty and must be cleared immediately. 945 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 946 mStackSupervisor.scheduleIdleLocked(); 947 } else { 948 mStackSupervisor.checkReadyForSleepLocked(); 949 } 950 } 951 } else { 952 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 953 prev = null; 954 } 955 mPausingActivity = null; 956 } 957 958 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 959 if (!mService.isSleepingOrShuttingDown()) { 960 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 961 } else { 962 mStackSupervisor.checkReadyForSleepLocked(); 963 ActivityRecord top = topStack.topRunningActivityLocked(null); 964 if (top == null || (prev != null && top != prev)) { 965 // If there are no more activities available to run, 966 // do resume anyway to start something. Also if the top 967 // activity on the stack is not the just paused activity, 968 // we need to go ahead and resume it to ensure we complete 969 // an in-flight app switch. 970 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 971 } 972 } 973 974 if (prev != null) { 975 prev.resumeKeyDispatchingLocked(); 976 977 if (prev.app != null && prev.cpuTimeAtResume > 0 978 && mService.mBatteryStatsService.isOnBattery()) { 979 long diff; 980 synchronized (mService.mProcessCpuThread) { 981 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 982 - prev.cpuTimeAtResume; 983 } 984 if (diff > 0) { 985 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 986 synchronized (bsi) { 987 BatteryStatsImpl.Uid.Proc ps = 988 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 989 prev.info.packageName); 990 if (ps != null) { 991 ps.addForegroundTimeLocked(diff); 992 } 993 } 994 } 995 } 996 prev.cpuTimeAtResume = 0; // reset it 997 } 998 } 999 1000 /** 1001 * Once we know that we have asked an application to put an activity in 1002 * the resumed state (either by launching it or explicitly telling it), 1003 * this function updates the rest of our state to match that fact. 1004 */ 1005 private void completeResumeLocked(ActivityRecord next) { 1006 next.idle = false; 1007 next.results = null; 1008 next.newIntents = null; 1009 if (next.nowVisible) { 1010 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1011 mStackSupervisor.dismissKeyguard(); 1012 } 1013 1014 // schedule an idle timeout in case the app doesn't do it for us. 1015 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1016 1017 mStackSupervisor.reportResumedActivityLocked(next); 1018 1019 next.resumeKeyDispatchingLocked(); 1020 mNoAnimActivities.clear(); 1021 1022 // Mark the point when the activity is resuming 1023 // TODO: To be more accurate, the mark should be before the onCreate, 1024 // not after the onResume. But for subsequent starts, onResume is fine. 1025 if (next.app != null) { 1026 synchronized (mService.mProcessCpuThread) { 1027 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1028 } 1029 } else { 1030 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1031 } 1032 } 1033 1034 /** 1035 * Determine if home should be visible below the passed record. 1036 * @param record activity we are querying for. 1037 * @return true if home is visible below the passed activity, false otherwise. 1038 */ 1039 boolean isActivityOverHome(ActivityRecord record) { 1040 // Start at record and go down, look for either home or a visible fullscreen activity. 1041 final TaskRecord recordTask = record.task; 1042 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1043 TaskRecord task = mTaskHistory.get(taskNdx); 1044 final ArrayList<ActivityRecord> activities = task.mActivities; 1045 final int startNdx = 1046 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1047 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1048 final ActivityRecord r = activities.get(activityNdx); 1049 if (r.isHomeActivity()) { 1050 return true; 1051 } 1052 if (!r.finishing && r.fullscreen) { 1053 // Passed activity is over a fullscreen activity. 1054 return false; 1055 } 1056 } 1057 if (task.mOnTopOfHome) { 1058 // Got to the bottom of a task on top of home without finding a visible fullscreen 1059 // activity. Home is visible. 1060 return true; 1061 } 1062 } 1063 // Got to the bottom of this stack and still don't know. If this is over the home stack 1064 // then record is over home. May not work if we ever get more than two layers. 1065 return mStackSupervisor.isFrontStack(this); 1066 } 1067 1068 private void setVisibile(ActivityRecord r, boolean visible) { 1069 r.visible = visible; 1070 mWindowManager.setAppVisibility(r.appToken, visible); 1071 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1072 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1073 ActivityContainer container = containers.get(containerNdx); 1074 container.setVisible(visible); 1075 } 1076 } 1077 1078 /** 1079 * Version of ensureActivitiesVisible that can easily be called anywhere. 1080 */ 1081 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1082 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1083 } 1084 1085 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1086 boolean forceHomeShown) { 1087 ActivityRecord r = topRunningActivityLocked(null); 1088 return r != null && 1089 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1090 } 1091 1092 /** 1093 * Make sure that all activities that need to be visible (that is, they 1094 * currently can be seen by the user) actually are. 1095 */ 1096 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1097 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1098 if (DEBUG_VISBILITY) Slog.v( 1099 TAG, "ensureActivitiesVisible behind " + top 1100 + " configChanges=0x" + Integer.toHexString(configChanges)); 1101 1102 if (mTranslucentActivityWaiting != top) { 1103 mUndrawnActivitiesBelowTopTranslucent.clear(); 1104 if (mTranslucentActivityWaiting != null) { 1105 // Call the callback with a timeout indication. 1106 notifyActivityDrawnLocked(null); 1107 mTranslucentActivityWaiting = null; 1108 } 1109 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1110 } 1111 1112 // If the top activity is not fullscreen, then we need to 1113 // make sure any activities under it are now visible. 1114 boolean aboveTop = true; 1115 boolean showHomeBehindStack = false; 1116 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1117 !(forceHomeShown && isHomeStack()); 1118 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1119 final TaskRecord task = mTaskHistory.get(taskNdx); 1120 final ArrayList<ActivityRecord> activities = task.mActivities; 1121 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1122 final ActivityRecord r = activities.get(activityNdx); 1123 if (r.finishing) { 1124 continue; 1125 } 1126 if (aboveTop && r != top) { 1127 continue; 1128 } 1129 aboveTop = false; 1130 if (!behindFullscreen) { 1131 if (DEBUG_VISBILITY) Slog.v( 1132 TAG, "Make visible? " + r + " finishing=" + r.finishing 1133 + " state=" + r.state); 1134 1135 final boolean doThisProcess = onlyThisProcess == null 1136 || onlyThisProcess.equals(r.processName); 1137 1138 // First: if this is not the current activity being started, make 1139 // sure it matches the current configuration. 1140 if (r != starting && doThisProcess) { 1141 ensureActivityConfigurationLocked(r, 0); 1142 } 1143 1144 if (r.app == null || r.app.thread == null) { 1145 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1146 // This activity needs to be visible, but isn't even 1147 // running... get it started, but don't resume it 1148 // at this point. 1149 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1150 if (r != starting) { 1151 r.startFreezingScreenLocked(r.app, configChanges); 1152 } 1153 if (!r.visible) { 1154 if (DEBUG_VISBILITY) Slog.v( 1155 TAG, "Starting and making visible: " + r); 1156 setVisibile(r, true); 1157 } 1158 if (r != starting) { 1159 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1160 } 1161 } 1162 1163 } else if (r.visible) { 1164 // If this activity is already visible, then there is nothing 1165 // else to do here. 1166 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1167 r.stopFreezingScreenLocked(false); 1168 1169 } else if (onlyThisProcess == null) { 1170 // This activity is not currently visible, but is running. 1171 // Tell it to become visible. 1172 r.visible = true; 1173 if (r.state != ActivityState.RESUMED && r != starting) { 1174 // If this activity is paused, tell it 1175 // to now show its window. 1176 if (DEBUG_VISBILITY) Slog.v( 1177 TAG, "Making visible and scheduling visibility: " + r); 1178 try { 1179 if (mTranslucentActivityWaiting != null) { 1180 mUndrawnActivitiesBelowTopTranslucent.add(r); 1181 } 1182 setVisibile(r, true); 1183 r.sleeping = false; 1184 r.app.pendingUiClean = true; 1185 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1186 r.stopFreezingScreenLocked(false); 1187 } catch (Exception e) { 1188 // Just skip on any failure; we'll make it 1189 // visible when it next restarts. 1190 Slog.w(TAG, "Exception thrown making visibile: " 1191 + r.intent.getComponent(), e); 1192 } 1193 } 1194 } 1195 1196 // Aggregate current change flags. 1197 configChanges |= r.configChangeFlags; 1198 1199 if (r.fullscreen) { 1200 // At this point, nothing else needs to be shown 1201 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1202 behindFullscreen = true; 1203 showHomeBehindStack = false; 1204 } else if (isActivityOverHome(r)) { 1205 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1206 showHomeBehindStack = true; 1207 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1208 } 1209 } else { 1210 if (DEBUG_VISBILITY) Slog.v( 1211 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1212 + " state=" + r.state 1213 + " behindFullscreen=" + behindFullscreen); 1214 // Now for any activities that aren't visible to the user, make 1215 // sure they no longer are keeping the screen frozen. 1216 if (r.visible) { 1217 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1218 try { 1219 setVisibile(r, false); 1220 switch (r.state) { 1221 case STOPPING: 1222 case STOPPED: 1223 if (r.app != null && r.app.thread != null) { 1224 if (DEBUG_VISBILITY) Slog.v( 1225 TAG, "Scheduling invisibility: " + r); 1226 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1227 } 1228 break; 1229 1230 case INITIALIZING: 1231 case RESUMED: 1232 case PAUSING: 1233 case PAUSED: 1234 // This case created for transitioning activities from 1235 // translucent to opaque {@link Activity#convertToOpaque}. 1236 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1237 mStackSupervisor.mStoppingActivities.add(r); 1238 } 1239 mStackSupervisor.scheduleIdleLocked(); 1240 break; 1241 1242 default: 1243 break; 1244 } 1245 } catch (Exception e) { 1246 // Just skip on any failure; we'll make it 1247 // visible when it next restarts. 1248 Slog.w(TAG, "Exception thrown making hidden: " 1249 + r.intent.getComponent(), e); 1250 } 1251 } else { 1252 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1253 } 1254 } 1255 } 1256 } 1257 return showHomeBehindStack; 1258 } 1259 1260 void convertToTranslucent(ActivityRecord r) { 1261 mTranslucentActivityWaiting = r; 1262 mUndrawnActivitiesBelowTopTranslucent.clear(); 1263 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1264 } 1265 1266 /** 1267 * Called as activities below the top translucent activity are redrawn. When the last one is 1268 * redrawn notify the top activity by calling 1269 * {@link Activity#onTranslucentConversionComplete}. 1270 * 1271 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1272 * occurred and the activity will be notified immediately. 1273 */ 1274 void notifyActivityDrawnLocked(ActivityRecord r) { 1275 mActivityContainer.setDrawn(); 1276 if ((r == null) 1277 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1278 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1279 // The last undrawn activity below the top has just been drawn. If there is an 1280 // opaque activity at the top, notify it that it can become translucent safely now. 1281 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1282 mTranslucentActivityWaiting = null; 1283 mUndrawnActivitiesBelowTopTranslucent.clear(); 1284 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1285 1286 if (waitingActivity != null) { 1287 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1288 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1289 try { 1290 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1291 waitingActivity.appToken, r != null); 1292 } catch (RemoteException e) { 1293 } 1294 } 1295 } 1296 } 1297 } 1298 1299 /** If any activities below the top running one are in the INITIALIZING state and they have a 1300 * starting window displayed then remove that starting window. It is possible that the activity 1301 * in this state will never resumed in which case that starting window will be orphaned. */ 1302 void cancelInitializingActivities() { 1303 final ActivityRecord topActivity = topRunningActivityLocked(null); 1304 boolean aboveTop = true; 1305 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1306 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1307 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1308 final ActivityRecord r = activities.get(activityNdx); 1309 if (aboveTop) { 1310 if (r == topActivity) { 1311 aboveTop = false; 1312 } 1313 continue; 1314 } 1315 1316 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1317 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1318 r.mStartingWindowShown = false; 1319 mWindowManager.removeAppStartingWindow(r.appToken); 1320 } 1321 } 1322 } 1323 } 1324 1325 /** 1326 * Ensure that the top activity in the stack is resumed. 1327 * 1328 * @param prev The previously resumed activity, for when in the process 1329 * of pausing; can be null to call from elsewhere. 1330 * 1331 * @return Returns true if something is being resumed, or false if 1332 * nothing happened. 1333 */ 1334 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1335 return resumeTopActivityLocked(prev, null); 1336 } 1337 1338 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1339 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1340 1341 ActivityRecord parent = mActivityContainer.mParentActivity; 1342 if ((parent != null && parent.state != ActivityState.RESUMED) || 1343 !mActivityContainer.isAttached()) { 1344 // Do not resume this stack if its parent is not resumed. 1345 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1346 return false; 1347 } 1348 1349 cancelInitializingActivities(); 1350 1351 // Find the first activity that is not finishing. 1352 ActivityRecord next = topRunningActivityLocked(null); 1353 1354 // Remember how we'll process this pause/resume situation, and ensure 1355 // that the state is reset however we wind up proceeding. 1356 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1357 mStackSupervisor.mUserLeaving = false; 1358 1359 if (next == null) { 1360 // There are no more activities! Let's just start up the 1361 // Launcher... 1362 ActivityOptions.abort(options); 1363 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1364 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1365 // Only resume home if on home display 1366 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1367 } 1368 1369 next.delayedResume = false; 1370 1371 // If the top activity is the resumed one, nothing to do. 1372 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1373 mStackSupervisor.allResumedActivitiesComplete()) { 1374 // Make sure we have executed any pending transitions, since there 1375 // should be nothing left to do at this point. 1376 mWindowManager.executeAppTransition(); 1377 mNoAnimActivities.clear(); 1378 ActivityOptions.abort(options); 1379 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1380 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1381 return false; 1382 } 1383 1384 final TaskRecord nextTask = next.task; 1385 final TaskRecord prevTask = prev != null ? prev.task : null; 1386 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1387 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1388 if (prevTask == nextTask) { 1389 prevTask.setFrontOfTask(); 1390 } else if (prevTask != topTask()) { 1391 // This task is going away but it was supposed to return to the home task. 1392 // Now the task above it has to return to the home task instead. 1393 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1394 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1395 } else { 1396 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1397 "resumeTopActivityLocked: Launching home next"); 1398 // Only resume home if on home display 1399 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1400 } 1401 } 1402 1403 // If we are sleeping, and there is no resumed activity, and the top 1404 // activity is paused, well that is the state we want. 1405 if (mService.isSleepingOrShuttingDown() 1406 && mLastPausedActivity == next 1407 && mStackSupervisor.allPausedActivitiesComplete()) { 1408 // Make sure we have executed any pending transitions, since there 1409 // should be nothing left to do at this point. 1410 mWindowManager.executeAppTransition(); 1411 mNoAnimActivities.clear(); 1412 ActivityOptions.abort(options); 1413 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1414 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1415 return false; 1416 } 1417 1418 // Make sure that the user who owns this activity is started. If not, 1419 // we will just leave it as is because someone should be bringing 1420 // another user's activities to the top of the stack. 1421 if (mService.mStartedUsers.get(next.userId) == null) { 1422 Slog.w(TAG, "Skipping resume of top activity " + next 1423 + ": user " + next.userId + " is stopped"); 1424 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1425 return false; 1426 } 1427 1428 // The activity may be waiting for stop, but that is no longer 1429 // appropriate for it. 1430 mStackSupervisor.mStoppingActivities.remove(next); 1431 mStackSupervisor.mGoingToSleepActivities.remove(next); 1432 next.sleeping = false; 1433 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1434 1435 next.updateOptionsLocked(options); 1436 1437 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1438 1439 // If we are currently pausing an activity, then don't do anything 1440 // until that is done. 1441 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1442 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1443 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1444 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1445 return false; 1446 } 1447 1448 // Okay we are now going to start a switch, to 'next'. We may first 1449 // have to pause the current activity, but this is an important point 1450 // where we have decided to go to 'next' so keep track of that. 1451 // XXX "App Redirected" dialog is getting too many false positives 1452 // at this point, so turn off for now. 1453 if (false) { 1454 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1455 long now = SystemClock.uptimeMillis(); 1456 final boolean inTime = mLastStartedActivity.startTime != 0 1457 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1458 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1459 final int nextUid = next.info.applicationInfo.uid; 1460 if (inTime && lastUid != nextUid 1461 && lastUid != next.launchedFromUid 1462 && mService.checkPermission( 1463 android.Manifest.permission.STOP_APP_SWITCHES, 1464 -1, next.launchedFromUid) 1465 != PackageManager.PERMISSION_GRANTED) { 1466 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1467 } else { 1468 next.startTime = now; 1469 mLastStartedActivity = next; 1470 } 1471 } else { 1472 next.startTime = SystemClock.uptimeMillis(); 1473 mLastStartedActivity = next; 1474 } 1475 } 1476 1477 // We need to start pausing the current activity so the top one 1478 // can be resumed... 1479 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1480 if (mResumedActivity != null) { 1481 pausing = true; 1482 startPausingLocked(userLeaving, false); 1483 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1484 } 1485 if (pausing) { 1486 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1487 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1488 // At this point we want to put the upcoming activity's process 1489 // at the top of the LRU list, since we know we will be needing it 1490 // very soon and it would be a waste to let it get killed if it 1491 // happens to be sitting towards the end. 1492 if (next.app != null && next.app.thread != null) { 1493 // No reason to do full oom adj update here; we'll let that 1494 // happen whenever it needs to later. 1495 mService.updateLruProcessLocked(next.app, true, null); 1496 } 1497 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1498 return true; 1499 } 1500 1501 // If the most recent activity was noHistory but was only stopped rather 1502 // than stopped+finished because the device went to sleep, we need to make 1503 // sure to finish it as we're making a new activity topmost. 1504 if (mService.mSleeping && mLastNoHistoryActivity != null && 1505 !mLastNoHistoryActivity.finishing) { 1506 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1507 " on new resume"); 1508 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1509 null, "no-history", false); 1510 mLastNoHistoryActivity = null; 1511 } 1512 1513 if (prev != null && prev != next) { 1514 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1515 prev.waitingVisible = true; 1516 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1517 if (DEBUG_SWITCH) Slog.v( 1518 TAG, "Resuming top, waiting visible to hide: " + prev); 1519 } else { 1520 // The next activity is already visible, so hide the previous 1521 // activity's windows right now so we can show the new one ASAP. 1522 // We only do this if the previous is finishing, which should mean 1523 // it is on top of the one being resumed so hiding it quickly 1524 // is good. Otherwise, we want to do the normal route of allowing 1525 // the resumed activity to be shown so we can decide if the 1526 // previous should actually be hidden depending on whether the 1527 // new one is found to be full-screen or not. 1528 if (prev.finishing) { 1529 mWindowManager.setAppVisibility(prev.appToken, false); 1530 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1531 + prev + ", waitingVisible=" 1532 + (prev != null ? prev.waitingVisible : null) 1533 + ", nowVisible=" + next.nowVisible); 1534 } else { 1535 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1536 + prev + ", waitingVisible=" 1537 + (prev != null ? prev.waitingVisible : null) 1538 + ", nowVisible=" + next.nowVisible); 1539 } 1540 } 1541 } 1542 1543 // Launching this app's activity, make sure the app is no longer 1544 // considered stopped. 1545 try { 1546 AppGlobals.getPackageManager().setPackageStoppedState( 1547 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1548 } catch (RemoteException e1) { 1549 } catch (IllegalArgumentException e) { 1550 Slog.w(TAG, "Failed trying to unstop package " 1551 + next.packageName + ": " + e); 1552 } 1553 1554 // We are starting up the next activity, so tell the window manager 1555 // that the previous one will be hidden soon. This way it can know 1556 // to ignore it when computing the desired screen orientation. 1557 boolean anim = true; 1558 if (prev != null) { 1559 if (prev.finishing) { 1560 if (DEBUG_TRANSITION) Slog.v(TAG, 1561 "Prepare close transition: prev=" + prev); 1562 if (mNoAnimActivities.contains(prev)) { 1563 anim = false; 1564 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1565 } else { 1566 mWindowManager.prepareAppTransition(prev.task == next.task 1567 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1568 : AppTransition.TRANSIT_TASK_CLOSE, false); 1569 } 1570 mWindowManager.setAppWillBeHidden(prev.appToken); 1571 mWindowManager.setAppVisibility(prev.appToken, false); 1572 } else { 1573 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1574 if (mNoAnimActivities.contains(next)) { 1575 anim = false; 1576 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1577 } else { 1578 mWindowManager.prepareAppTransition(prev.task == next.task 1579 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1580 : AppTransition.TRANSIT_TASK_OPEN, false); 1581 } 1582 } 1583 if (false) { 1584 mWindowManager.setAppWillBeHidden(prev.appToken); 1585 mWindowManager.setAppVisibility(prev.appToken, false); 1586 } 1587 } else { 1588 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1589 if (mNoAnimActivities.contains(next)) { 1590 anim = false; 1591 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1592 } else { 1593 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1594 } 1595 } 1596 1597 Bundle resumeAnimOptions = null; 1598 if (anim) { 1599 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1600 if (opts != null) { 1601 resumeAnimOptions = opts.toBundle(); 1602 } 1603 next.applyOptionsLocked(); 1604 } else { 1605 next.clearOptionsLocked(); 1606 } 1607 1608 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1609 if (next.app != null && next.app.thread != null) { 1610 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1611 1612 // This activity is now becoming visible. 1613 mWindowManager.setAppVisibility(next.appToken, true); 1614 1615 // schedule launch ticks to collect information about slow apps. 1616 next.startLaunchTickingLocked(); 1617 1618 ActivityRecord lastResumedActivity = 1619 lastStack == null ? null :lastStack.mResumedActivity; 1620 ActivityState lastState = next.state; 1621 1622 mService.updateCpuStats(); 1623 1624 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1625 next.state = ActivityState.RESUMED; 1626 mResumedActivity = next; 1627 next.task.touchActiveTime(); 1628 mService.addRecentTaskLocked(next.task); 1629 mService.updateLruProcessLocked(next.app, true, null); 1630 updateLRUListLocked(next); 1631 mService.updateOomAdjLocked(); 1632 1633 // Have the window manager re-evaluate the orientation of 1634 // the screen based on the new activity order. 1635 boolean notUpdated = true; 1636 if (mStackSupervisor.isFrontStack(this)) { 1637 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1638 mService.mConfiguration, 1639 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1640 if (config != null) { 1641 next.frozenBeforeDestroy = true; 1642 } 1643 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1644 } 1645 1646 if (notUpdated) { 1647 // The configuration update wasn't able to keep the existing 1648 // instance of the activity, and instead started a new one. 1649 // We should be all done, but let's just make sure our activity 1650 // is still at the top and schedule another run if something 1651 // weird happened. 1652 ActivityRecord nextNext = topRunningActivityLocked(null); 1653 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1654 "Activity config changed during resume: " + next 1655 + ", new next: " + nextNext); 1656 if (nextNext != next) { 1657 // Do over! 1658 mStackSupervisor.scheduleResumeTopActivities(); 1659 } 1660 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1661 mNoAnimActivities.clear(); 1662 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1663 return true; 1664 } 1665 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1666 return false; 1667 } 1668 1669 try { 1670 // Deliver all pending results. 1671 ArrayList<ResultInfo> a = next.results; 1672 if (a != null) { 1673 final int N = a.size(); 1674 if (!next.finishing && N > 0) { 1675 if (DEBUG_RESULTS) Slog.v( 1676 TAG, "Delivering results to " + next 1677 + ": " + a); 1678 next.app.thread.scheduleSendResult(next.appToken, a); 1679 } 1680 } 1681 1682 if (next.newIntents != null) { 1683 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1684 } 1685 1686 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1687 next.userId, System.identityHashCode(next), 1688 next.task.taskId, next.shortComponentName); 1689 1690 next.sleeping = false; 1691 mService.showAskCompatModeDialogLocked(next); 1692 next.app.pendingUiClean = true; 1693 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1694 next.clearOptionsLocked(); 1695 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1696 mService.isNextTransitionForward(), resumeAnimOptions); 1697 1698 mStackSupervisor.checkReadyForSleepLocked(); 1699 1700 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1701 } catch (Exception e) { 1702 // Whoops, need to restart this activity! 1703 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1704 + lastState + ": " + next); 1705 next.state = lastState; 1706 if (lastStack != null) { 1707 lastStack.mResumedActivity = lastResumedActivity; 1708 } 1709 Slog.i(TAG, "Restarting because process died: " + next); 1710 if (!next.hasBeenLaunched) { 1711 next.hasBeenLaunched = true; 1712 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1713 mStackSupervisor.isFrontStack(lastStack)) { 1714 mWindowManager.setAppStartingWindow( 1715 next.appToken, next.packageName, next.theme, 1716 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1717 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1718 next.windowFlags, null, true); 1719 } 1720 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1721 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1722 return true; 1723 } 1724 1725 // From this point on, if something goes wrong there is no way 1726 // to recover the activity. 1727 try { 1728 next.visible = true; 1729 completeResumeLocked(next); 1730 } catch (Exception e) { 1731 // If any exception gets thrown, toss away this 1732 // activity and try the next one. 1733 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1734 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1735 "resume-exception", true); 1736 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1737 return true; 1738 } 1739 next.stopped = false; 1740 1741 } else { 1742 // Whoops, need to restart this activity! 1743 if (!next.hasBeenLaunched) { 1744 next.hasBeenLaunched = true; 1745 } else { 1746 if (SHOW_APP_STARTING_PREVIEW) { 1747 mWindowManager.setAppStartingWindow( 1748 next.appToken, next.packageName, next.theme, 1749 mService.compatibilityInfoForPackageLocked( 1750 next.info.applicationInfo), 1751 next.nonLocalizedLabel, 1752 next.labelRes, next.icon, next.logo, next.windowFlags, 1753 null, true); 1754 } 1755 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1756 } 1757 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1758 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1759 } 1760 1761 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1762 return true; 1763 } 1764 1765 private void insertTaskAtTop(TaskRecord task) { 1766 // If this is being moved to the top by another activity or being launched from the home 1767 // activity, set mOnTopOfHome accordingly. 1768 if (isOnHomeDisplay()) { 1769 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1770 final boolean fromHome = lastStack.isHomeStack(); 1771 if (!isHomeStack() && (fromHome || topTask() != task)) { 1772 task.mOnTopOfHome = fromHome; 1773 } 1774 } else { 1775 task.mOnTopOfHome = false; 1776 } 1777 1778 mTaskHistory.remove(task); 1779 // Now put task at top. 1780 int stackNdx = mTaskHistory.size(); 1781 if (!isCurrentProfileLocked(task.userId)) { 1782 // Put non-current user tasks below current user tasks. 1783 while (--stackNdx >= 0) { 1784 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1785 break; 1786 } 1787 } 1788 ++stackNdx; 1789 } 1790 mTaskHistory.add(stackNdx, task); 1791 } 1792 1793 final void startActivityLocked(ActivityRecord r, boolean newTask, 1794 boolean doResume, boolean keepCurTransition, Bundle options) { 1795 TaskRecord rTask = r.task; 1796 final int taskId = rTask.taskId; 1797 if (taskForIdLocked(taskId) == null || newTask) { 1798 // Last activity in task had been removed or ActivityManagerService is reusing task. 1799 // Insert or replace. 1800 // Might not even be in. 1801 insertTaskAtTop(rTask); 1802 mWindowManager.moveTaskToTop(taskId); 1803 } 1804 TaskRecord task = null; 1805 if (!newTask) { 1806 // If starting in an existing task, find where that is... 1807 boolean startIt = true; 1808 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1809 task = mTaskHistory.get(taskNdx); 1810 if (task == r.task) { 1811 // Here it is! Now, if this is not yet visible to the 1812 // user, then just add it without starting; it will 1813 // get started when the user navigates back to it. 1814 if (!startIt) { 1815 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1816 + task, new RuntimeException("here").fillInStackTrace()); 1817 task.addActivityToTop(r); 1818 r.putInHistory(); 1819 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1820 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1821 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1822 r.userId, r.info.configChanges); 1823 if (VALIDATE_TOKENS) { 1824 validateAppTokensLocked(); 1825 } 1826 ActivityOptions.abort(options); 1827 return; 1828 } 1829 break; 1830 } else if (task.numFullscreen > 0) { 1831 startIt = false; 1832 } 1833 } 1834 } 1835 1836 // Place a new activity at top of stack, so it is next to interact 1837 // with the user. 1838 1839 // If we are not placing the new activity frontmost, we do not want 1840 // to deliver the onUserLeaving callback to the actual frontmost 1841 // activity 1842 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1843 mStackSupervisor.mUserLeaving = false; 1844 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1845 "startActivity() behind front, mUserLeaving=false"); 1846 } 1847 1848 task = r.task; 1849 1850 // Slot the activity into the history stack and proceed 1851 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1852 new RuntimeException("here").fillInStackTrace()); 1853 task.addActivityToTop(r); 1854 task.setFrontOfTask(); 1855 1856 r.putInHistory(); 1857 if (!isHomeStack() || numActivities() > 0) { 1858 // We want to show the starting preview window if we are 1859 // switching to a new task, or the next activity's process is 1860 // not currently running. 1861 boolean showStartingIcon = newTask; 1862 ProcessRecord proc = r.app; 1863 if (proc == null) { 1864 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1865 } 1866 if (proc == null || proc.thread == null) { 1867 showStartingIcon = true; 1868 } 1869 if (DEBUG_TRANSITION) Slog.v(TAG, 1870 "Prepare open transition: starting " + r); 1871 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1872 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1873 mNoAnimActivities.add(r); 1874 } else { 1875 mWindowManager.prepareAppTransition(newTask 1876 ? AppTransition.TRANSIT_TASK_OPEN 1877 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1878 mNoAnimActivities.remove(r); 1879 } 1880 r.updateOptionsLocked(options); 1881 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1882 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1883 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1884 r.info.configChanges); 1885 boolean doShow = true; 1886 if (newTask) { 1887 // Even though this activity is starting fresh, we still need 1888 // to reset it to make sure we apply affinities to move any 1889 // existing activities from other tasks in to it. 1890 // If the caller has requested that the target task be 1891 // reset, then do so. 1892 if ((r.intent.getFlags() 1893 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1894 resetTaskIfNeededLocked(r, r); 1895 doShow = topRunningNonDelayedActivityLocked(null) == r; 1896 } 1897 } 1898 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1899 // Figure out if we are transitioning from another activity that is 1900 // "has the same starting icon" as the next one. This allows the 1901 // window manager to keep the previous window it had previously 1902 // created, if it still had one. 1903 ActivityRecord prev = mResumedActivity; 1904 if (prev != null) { 1905 // We don't want to reuse the previous starting preview if: 1906 // (1) The current activity is in a different task. 1907 if (prev.task != r.task) { 1908 prev = null; 1909 } 1910 // (2) The current activity is already displayed. 1911 else if (prev.nowVisible) { 1912 prev = null; 1913 } 1914 } 1915 mWindowManager.setAppStartingWindow( 1916 r.appToken, r.packageName, r.theme, 1917 mService.compatibilityInfoForPackageLocked( 1918 r.info.applicationInfo), r.nonLocalizedLabel, 1919 r.labelRes, r.icon, r.logo, r.windowFlags, 1920 prev != null ? prev.appToken : null, showStartingIcon); 1921 r.mStartingWindowShown = true; 1922 } 1923 } else { 1924 // If this is the first activity, don't do any fancy animations, 1925 // because there is nothing for it to animate on top of. 1926 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1927 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1928 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1929 r.info.configChanges); 1930 ActivityOptions.abort(options); 1931 } 1932 if (VALIDATE_TOKENS) { 1933 validateAppTokensLocked(); 1934 } 1935 1936 if (doResume) { 1937 mStackSupervisor.resumeTopActivitiesLocked(); 1938 } 1939 } 1940 1941 final void validateAppTokensLocked() { 1942 mValidateAppTokens.clear(); 1943 mValidateAppTokens.ensureCapacity(numActivities()); 1944 final int numTasks = mTaskHistory.size(); 1945 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1946 TaskRecord task = mTaskHistory.get(taskNdx); 1947 final ArrayList<ActivityRecord> activities = task.mActivities; 1948 if (activities.isEmpty()) { 1949 continue; 1950 } 1951 TaskGroup group = new TaskGroup(); 1952 group.taskId = task.taskId; 1953 mValidateAppTokens.add(group); 1954 final int numActivities = activities.size(); 1955 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1956 final ActivityRecord r = activities.get(activityNdx); 1957 group.tokens.add(r.appToken); 1958 } 1959 } 1960 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1961 } 1962 1963 /** 1964 * Perform a reset of the given task, if needed as part of launching it. 1965 * Returns the new HistoryRecord at the top of the task. 1966 */ 1967 /** 1968 * Helper method for #resetTaskIfNeededLocked. 1969 * We are inside of the task being reset... we'll either finish this activity, push it out 1970 * for another task, or leave it as-is. 1971 * @param task The task containing the Activity (taskTop) that might be reset. 1972 * @param forceReset 1973 * @return An ActivityOptions that needs to be processed. 1974 */ 1975 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1976 ActivityOptions topOptions = null; 1977 1978 int replyChainEnd = -1; 1979 boolean canMoveOptions = true; 1980 1981 // We only do this for activities that are not the root of the task (since if we finish 1982 // the root, we may no longer have the task!). 1983 final ArrayList<ActivityRecord> activities = task.mActivities; 1984 final int numActivities = activities.size(); 1985 for (int i = numActivities - 1; i > 0; --i ) { 1986 ActivityRecord target = activities.get(i); 1987 1988 final int flags = target.info.flags; 1989 final boolean finishOnTaskLaunch = 1990 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1991 final boolean allowTaskReparenting = 1992 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1993 final boolean clearWhenTaskReset = 1994 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 1995 1996 if (!finishOnTaskLaunch 1997 && !clearWhenTaskReset 1998 && target.resultTo != null) { 1999 // If this activity is sending a reply to a previous 2000 // activity, we can't do anything with it now until 2001 // we reach the start of the reply chain. 2002 // XXX note that we are assuming the result is always 2003 // to the previous activity, which is almost always 2004 // the case but we really shouldn't count on. 2005 if (replyChainEnd < 0) { 2006 replyChainEnd = i; 2007 } 2008 } else if (!finishOnTaskLaunch 2009 && !clearWhenTaskReset 2010 && allowTaskReparenting 2011 && target.taskAffinity != null 2012 && !target.taskAffinity.equals(task.affinity)) { 2013 // If this activity has an affinity for another 2014 // task, then we need to move it out of here. We will 2015 // move it as far out of the way as possible, to the 2016 // bottom of the activity stack. This also keeps it 2017 // correctly ordered with any activities we previously 2018 // moved. 2019 final ThumbnailHolder newThumbHolder; 2020 final TaskRecord targetTask; 2021 final ActivityRecord bottom = 2022 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2023 mTaskHistory.get(0).mActivities.get(0) : null; 2024 if (bottom != null && target.taskAffinity != null 2025 && target.taskAffinity.equals(bottom.task.affinity)) { 2026 // If the activity currently at the bottom has the 2027 // same task affinity as the one we are moving, 2028 // then merge it into the same task. 2029 targetTask = bottom.task; 2030 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2031 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2032 + " out to bottom task " + bottom.task); 2033 } else { 2034 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2035 null, false); 2036 newThumbHolder = targetTask; 2037 targetTask.affinityIntent = target.intent; 2038 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2039 + " out to new task " + target.task); 2040 } 2041 2042 target.thumbHolder = newThumbHolder; 2043 2044 final int targetTaskId = targetTask.taskId; 2045 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2046 2047 boolean noOptions = canMoveOptions; 2048 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2049 for (int srcPos = start; srcPos >= i; --srcPos) { 2050 final ActivityRecord p = activities.get(srcPos); 2051 if (p.finishing) { 2052 continue; 2053 } 2054 2055 ThumbnailHolder curThumbHolder = p.thumbHolder; 2056 canMoveOptions = false; 2057 if (noOptions && topOptions == null) { 2058 topOptions = p.takeOptionsLocked(); 2059 if (topOptions != null) { 2060 noOptions = false; 2061 } 2062 } 2063 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2064 + task + " adding to task=" + targetTask 2065 + " Callers=" + Debug.getCallers(4)); 2066 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2067 + " out to target's task " + target.task); 2068 p.setTask(targetTask, curThumbHolder, false); 2069 targetTask.addActivityAtBottom(p); 2070 2071 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2072 } 2073 2074 mWindowManager.moveTaskToBottom(targetTaskId); 2075 if (VALIDATE_TOKENS) { 2076 validateAppTokensLocked(); 2077 } 2078 2079 replyChainEnd = -1; 2080 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2081 // If the activity should just be removed -- either 2082 // because it asks for it, or the task should be 2083 // cleared -- then finish it and anything that is 2084 // part of its reply chain. 2085 int end; 2086 if (clearWhenTaskReset) { 2087 // In this case, we want to finish this activity 2088 // and everything above it, so be sneaky and pretend 2089 // like these are all in the reply chain. 2090 end = numActivities - 1; 2091 } else if (replyChainEnd < 0) { 2092 end = i; 2093 } else { 2094 end = replyChainEnd; 2095 } 2096 boolean noOptions = canMoveOptions; 2097 for (int srcPos = i; srcPos <= end; srcPos++) { 2098 ActivityRecord p = activities.get(srcPos); 2099 if (p.finishing) { 2100 continue; 2101 } 2102 canMoveOptions = false; 2103 if (noOptions && topOptions == null) { 2104 topOptions = p.takeOptionsLocked(); 2105 if (topOptions != null) { 2106 noOptions = false; 2107 } 2108 } 2109 if (DEBUG_TASKS) Slog.w(TAG, 2110 "resetTaskIntendedTask: calling finishActivity on " + p); 2111 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2112 end--; 2113 srcPos--; 2114 } 2115 } 2116 replyChainEnd = -1; 2117 } else { 2118 // If we were in the middle of a chain, well the 2119 // activity that started it all doesn't want anything 2120 // special, so leave it all as-is. 2121 replyChainEnd = -1; 2122 } 2123 } 2124 2125 return topOptions; 2126 } 2127 2128 /** 2129 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2130 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2131 * @param affinityTask The task we are looking for an affinity to. 2132 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2133 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2134 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2135 */ 2136 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2137 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2138 int replyChainEnd = -1; 2139 final int taskId = task.taskId; 2140 final String taskAffinity = task.affinity; 2141 2142 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2143 final int numActivities = activities.size(); 2144 // Do not operate on the root Activity. 2145 for (int i = numActivities - 1; i > 0; --i) { 2146 ActivityRecord target = activities.get(i); 2147 2148 final int flags = target.info.flags; 2149 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2150 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2151 2152 if (target.resultTo != null) { 2153 // If this activity is sending a reply to a previous 2154 // activity, we can't do anything with it now until 2155 // we reach the start of the reply chain. 2156 // XXX note that we are assuming the result is always 2157 // to the previous activity, which is almost always 2158 // the case but we really shouldn't count on. 2159 if (replyChainEnd < 0) { 2160 replyChainEnd = i; 2161 } 2162 } else if (topTaskIsHigher 2163 && allowTaskReparenting 2164 && taskAffinity != null 2165 && taskAffinity.equals(target.taskAffinity)) { 2166 // This activity has an affinity for our task. Either remove it if we are 2167 // clearing or move it over to our task. Note that 2168 // we currently punt on the case where we are resetting a 2169 // task that is not at the top but who has activities above 2170 // with an affinity to it... this is really not a normal 2171 // case, and we will need to later pull that task to the front 2172 // and usually at that point we will do the reset and pick 2173 // up those remaining activities. (This only happens if 2174 // someone starts an activity in a new task from an activity 2175 // in a task that is not currently on top.) 2176 if (forceReset || finishOnTaskLaunch) { 2177 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2178 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2179 for (int srcPos = start; srcPos >= i; --srcPos) { 2180 final ActivityRecord p = activities.get(srcPos); 2181 if (p.finishing) { 2182 continue; 2183 } 2184 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2185 } 2186 } else { 2187 if (taskInsertionPoint < 0) { 2188 taskInsertionPoint = task.mActivities.size(); 2189 2190 } 2191 2192 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2193 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2194 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2195 for (int srcPos = start; srcPos >= i; --srcPos) { 2196 final ActivityRecord p = activities.get(srcPos); 2197 p.setTask(task, null, false); 2198 task.addActivityAtIndex(taskInsertionPoint, p); 2199 2200 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2201 + " to stack at " + task, 2202 new RuntimeException("here").fillInStackTrace()); 2203 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2204 + " in to resetting task " + task); 2205 mWindowManager.setAppGroupId(p.appToken, taskId); 2206 } 2207 mWindowManager.moveTaskToTop(taskId); 2208 if (VALIDATE_TOKENS) { 2209 validateAppTokensLocked(); 2210 } 2211 2212 // Now we've moved it in to place... but what if this is 2213 // a singleTop activity and we have put it on top of another 2214 // instance of the same activity? Then we drop the instance 2215 // below so it remains singleTop. 2216 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2217 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2218 int targetNdx = taskActivities.indexOf(target); 2219 if (targetNdx > 0) { 2220 ActivityRecord p = taskActivities.get(targetNdx - 1); 2221 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2222 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2223 false); 2224 } 2225 } 2226 } 2227 } 2228 2229 replyChainEnd = -1; 2230 } 2231 } 2232 return taskInsertionPoint; 2233 } 2234 2235 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2236 ActivityRecord newActivity) { 2237 boolean forceReset = 2238 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2239 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2240 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2241 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2242 forceReset = true; 2243 } 2244 } 2245 2246 final TaskRecord task = taskTop.task; 2247 2248 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2249 * for remaining tasks. Used for later tasks to reparent to task. */ 2250 boolean taskFound = false; 2251 2252 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2253 ActivityOptions topOptions = null; 2254 2255 // Preserve the location for reparenting in the new task. 2256 int reparentInsertionPoint = -1; 2257 2258 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2259 final TaskRecord targetTask = mTaskHistory.get(i); 2260 2261 if (targetTask == task) { 2262 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2263 taskFound = true; 2264 } else { 2265 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2266 taskFound, forceReset, reparentInsertionPoint); 2267 } 2268 } 2269 2270 int taskNdx = mTaskHistory.indexOf(task); 2271 do { 2272 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2273 } while (taskTop == null && taskNdx >= 0); 2274 2275 if (topOptions != null) { 2276 // If we got some ActivityOptions from an activity on top that 2277 // was removed from the task, propagate them to the new real top. 2278 if (taskTop != null) { 2279 taskTop.updateOptionsLocked(topOptions); 2280 } else { 2281 topOptions.abort(); 2282 } 2283 } 2284 2285 return taskTop; 2286 } 2287 2288 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2289 String resultWho, int requestCode, int resultCode, Intent data) { 2290 2291 if (callingUid > 0) { 2292 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2293 data, r.getUriPermissionsLocked()); 2294 } 2295 2296 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2297 + " : who=" + resultWho + " req=" + requestCode 2298 + " res=" + resultCode + " data=" + data); 2299 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2300 try { 2301 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2302 list.add(new ResultInfo(resultWho, requestCode, 2303 resultCode, data)); 2304 r.app.thread.scheduleSendResult(r.appToken, list); 2305 return; 2306 } catch (Exception e) { 2307 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2308 } 2309 } 2310 2311 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2312 } 2313 2314 private void adjustFocusedActivityLocked(ActivityRecord r) { 2315 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2316 ActivityRecord next = topRunningActivityLocked(null); 2317 if (next != r) { 2318 final TaskRecord task = r.task; 2319 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2320 mStackSupervisor.moveHomeToTop(); 2321 } 2322 } 2323 mService.setFocusedActivityLocked(mStackSupervisor.topRunningActivityLocked()); 2324 } 2325 } 2326 2327 final void stopActivityLocked(ActivityRecord r) { 2328 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2329 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2330 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2331 if (!r.finishing) { 2332 if (!mService.mSleeping) { 2333 if (DEBUG_STATES) { 2334 Slog.d(TAG, "no-history finish of " + r); 2335 } 2336 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2337 "no-history", false); 2338 } else { 2339 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2340 + " on stop because we're just sleeping"); 2341 } 2342 } 2343 } 2344 2345 if (r.app != null && r.app.thread != null) { 2346 adjustFocusedActivityLocked(r); 2347 r.resumeKeyDispatchingLocked(); 2348 try { 2349 r.stopped = false; 2350 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2351 + " (stop requested)"); 2352 r.state = ActivityState.STOPPING; 2353 if (DEBUG_VISBILITY) Slog.v( 2354 TAG, "Stopping visible=" + r.visible + " for " + r); 2355 if (!r.visible) { 2356 mWindowManager.setAppVisibility(r.appToken, false); 2357 } 2358 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2359 if (mService.isSleepingOrShuttingDown()) { 2360 r.setSleeping(true); 2361 } 2362 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2363 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2364 } catch (Exception e) { 2365 // Maybe just ignore exceptions here... if the process 2366 // has crashed, our death notification will clean things 2367 // up. 2368 Slog.w(TAG, "Exception thrown during pause", e); 2369 // Just in case, assume it to be stopped. 2370 r.stopped = true; 2371 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2372 r.state = ActivityState.STOPPED; 2373 if (r.configDestroy) { 2374 destroyActivityLocked(r, true, false, "stop-except"); 2375 } 2376 } 2377 } 2378 } 2379 2380 /** 2381 * @return Returns true if the activity is being finished, false if for 2382 * some reason it is being left as-is. 2383 */ 2384 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2385 Intent resultData, String reason, boolean oomAdj) { 2386 ActivityRecord r = isInStackLocked(token); 2387 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2388 TAG, "Finishing activity token=" + token + " r=" 2389 + ", result=" + resultCode + ", data=" + resultData 2390 + ", reason=" + reason); 2391 if (r == null) { 2392 return false; 2393 } 2394 2395 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2396 return true; 2397 } 2398 2399 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2400 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2401 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2402 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2403 ActivityRecord r = activities.get(activityNdx); 2404 if (r.resultTo == self && r.requestCode == requestCode) { 2405 if ((r.resultWho == null && resultWho == null) || 2406 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2407 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2408 false); 2409 } 2410 } 2411 } 2412 } 2413 mService.updateOomAdjLocked(); 2414 } 2415 2416 final void finishTopRunningActivityLocked(ProcessRecord app) { 2417 ActivityRecord r = topRunningActivityLocked(null); 2418 if (r != null && r.app == app) { 2419 // If the top running activity is from this crashing 2420 // process, then terminate it to avoid getting in a loop. 2421 Slog.w(TAG, " Force finishing activity " 2422 + r.intent.getComponent().flattenToShortString()); 2423 int taskNdx = mTaskHistory.indexOf(r.task); 2424 int activityNdx = r.task.mActivities.indexOf(r); 2425 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2426 // Also terminate any activities below it that aren't yet 2427 // stopped, to avoid a situation where one will get 2428 // re-start our crashing activity once it gets resumed again. 2429 --activityNdx; 2430 if (activityNdx < 0) { 2431 do { 2432 --taskNdx; 2433 if (taskNdx < 0) { 2434 break; 2435 } 2436 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2437 } while (activityNdx < 0); 2438 } 2439 if (activityNdx >= 0) { 2440 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2441 if (r.state == ActivityState.RESUMED 2442 || r.state == ActivityState.PAUSING 2443 || r.state == ActivityState.PAUSED) { 2444 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2445 Slog.w(TAG, " Force finishing activity " 2446 + r.intent.getComponent().flattenToShortString()); 2447 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2448 } 2449 } 2450 } 2451 } 2452 } 2453 2454 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2455 ArrayList<ActivityRecord> activities = r.task.mActivities; 2456 for (int index = activities.indexOf(r); index >= 0; --index) { 2457 ActivityRecord cur = activities.get(index); 2458 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2459 break; 2460 } 2461 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2462 } 2463 return true; 2464 } 2465 2466 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2467 // send the result 2468 ActivityRecord resultTo = r.resultTo; 2469 if (resultTo != null) { 2470 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2471 + " who=" + r.resultWho + " req=" + r.requestCode 2472 + " res=" + resultCode + " data=" + resultData); 2473 if (r.info.applicationInfo.uid > 0) { 2474 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2475 resultTo.packageName, resultData, 2476 resultTo.getUriPermissionsLocked()); 2477 } 2478 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2479 resultData); 2480 r.resultTo = null; 2481 } 2482 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2483 2484 // Make sure this HistoryRecord is not holding on to other resources, 2485 // because clients have remote IPC references to this object so we 2486 // can't assume that will go away and want to avoid circular IPC refs. 2487 r.results = null; 2488 r.pendingResults = null; 2489 r.newIntents = null; 2490 r.icicle = null; 2491 } 2492 2493 /** 2494 * @return Returns true if this activity has been removed from the history 2495 * list, or false if it is still in the list and will be removed later. 2496 */ 2497 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2498 String reason, boolean oomAdj) { 2499 if (r.finishing) { 2500 Slog.w(TAG, "Duplicate finish request for " + r); 2501 return false; 2502 } 2503 2504 r.makeFinishing(); 2505 final TaskRecord task = r.task; 2506 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2507 r.userId, System.identityHashCode(r), 2508 task.taskId, r.shortComponentName, reason); 2509 final ArrayList<ActivityRecord> activities = task.mActivities; 2510 final int index = activities.indexOf(r); 2511 if (index < (activities.size() - 1)) { 2512 task.setFrontOfTask(); 2513 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2514 // If the caller asked that this activity (and all above it) 2515 // be cleared when the task is reset, don't lose that information, 2516 // but propagate it up to the next activity. 2517 ActivityRecord next = activities.get(index+1); 2518 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2519 } 2520 } 2521 2522 r.pauseKeyDispatchingLocked(); 2523 2524 adjustFocusedActivityLocked(r); 2525 2526 finishActivityResultsLocked(r, resultCode, resultData); 2527 2528 if (!mService.mPendingThumbnails.isEmpty()) { 2529 // There are clients waiting to receive thumbnails so, in case 2530 // this is an activity that someone is waiting for, add it 2531 // to the pending list so we can correctly update the clients. 2532 mStackSupervisor.mCancelledThumbnails.add(r); 2533 } 2534 2535 if (mResumedActivity == r) { 2536 boolean endTask = index <= 0; 2537 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2538 "Prepare close transition: finishing " + r); 2539 mWindowManager.prepareAppTransition(endTask 2540 ? AppTransition.TRANSIT_TASK_CLOSE 2541 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2542 2543 // Tell window manager to prepare for this one to be removed. 2544 mWindowManager.setAppVisibility(r.appToken, false); 2545 2546 if (mPausingActivity == null) { 2547 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2548 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2549 startPausingLocked(false, false); 2550 } 2551 2552 if (endTask) { 2553 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2554 } 2555 } else if (r.state != ActivityState.PAUSING) { 2556 // If the activity is PAUSING, we will complete the finish once 2557 // it is done pausing; else we can just directly finish it here. 2558 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2559 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2560 } else { 2561 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2562 } 2563 2564 return false; 2565 } 2566 2567 static final int FINISH_IMMEDIATELY = 0; 2568 static final int FINISH_AFTER_PAUSE = 1; 2569 static final int FINISH_AFTER_VISIBLE = 2; 2570 2571 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2572 // First things first: if this activity is currently visible, 2573 // and the resumed activity is not yet visible, then hold off on 2574 // finishing until the resumed one becomes visible. 2575 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2576 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2577 mStackSupervisor.mStoppingActivities.add(r); 2578 if (mStackSupervisor.mStoppingActivities.size() > 3 2579 || r.frontOfTask && mTaskHistory.size() <= 1) { 2580 // If we already have a few activities waiting to stop, 2581 // then give up on things going idle and start clearing 2582 // them out. Or if r is the last of activity of the last task the stack 2583 // will be empty and must be cleared immediately. 2584 mStackSupervisor.scheduleIdleLocked(); 2585 } else { 2586 mStackSupervisor.checkReadyForSleepLocked(); 2587 } 2588 } 2589 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2590 + " (finish requested)"); 2591 r.state = ActivityState.STOPPING; 2592 if (oomAdj) { 2593 mService.updateOomAdjLocked(); 2594 } 2595 return r; 2596 } 2597 2598 // make sure the record is cleaned out of other places. 2599 mStackSupervisor.mStoppingActivities.remove(r); 2600 mStackSupervisor.mGoingToSleepActivities.remove(r); 2601 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2602 if (mResumedActivity == r) { 2603 mResumedActivity = null; 2604 } 2605 final ActivityState prevState = r.state; 2606 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2607 r.state = ActivityState.FINISHING; 2608 2609 if (mode == FINISH_IMMEDIATELY 2610 || prevState == ActivityState.STOPPED 2611 || prevState == ActivityState.INITIALIZING) { 2612 // If this activity is already stopped, we can just finish 2613 // it right now. 2614 boolean activityRemoved = destroyActivityLocked(r, true, 2615 oomAdj, "finish-imm"); 2616 if (activityRemoved) { 2617 mStackSupervisor.resumeTopActivitiesLocked(); 2618 } 2619 return activityRemoved ? null : r; 2620 } 2621 2622 // Need to go through the full pause cycle to get this 2623 // activity into the stopped state and then finish it. 2624 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2625 mStackSupervisor.mFinishingActivities.add(r); 2626 r.resumeKeyDispatchingLocked(); 2627 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2628 return r; 2629 } 2630 2631 void finishAllActivitiesLocked() { 2632 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2633 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2634 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2635 final ActivityRecord r = activities.get(activityNdx); 2636 if (r.finishing) { 2637 continue; 2638 } 2639 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2640 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2641 } 2642 } 2643 } 2644 2645 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2646 Intent resultData) { 2647 final ActivityRecord srec = ActivityRecord.forToken(token); 2648 final TaskRecord task = srec.task; 2649 final ArrayList<ActivityRecord> activities = task.mActivities; 2650 final int start = activities.indexOf(srec); 2651 if (!mTaskHistory.contains(task) || (start < 0)) { 2652 return false; 2653 } 2654 int finishTo = start - 1; 2655 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2656 boolean foundParentInTask = false; 2657 final ComponentName dest = destIntent.getComponent(); 2658 if (start > 0 && dest != null) { 2659 for (int i = finishTo; i >= 0; i--) { 2660 ActivityRecord r = activities.get(i); 2661 if (r.info.packageName.equals(dest.getPackageName()) && 2662 r.info.name.equals(dest.getClassName())) { 2663 finishTo = i; 2664 parent = r; 2665 foundParentInTask = true; 2666 break; 2667 } 2668 } 2669 } 2670 2671 IActivityController controller = mService.mController; 2672 if (controller != null) { 2673 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2674 if (next != null) { 2675 // ask watcher if this is allowed 2676 boolean resumeOK = true; 2677 try { 2678 resumeOK = controller.activityResuming(next.packageName); 2679 } catch (RemoteException e) { 2680 mService.mController = null; 2681 Watchdog.getInstance().setActivityController(null); 2682 } 2683 2684 if (!resumeOK) { 2685 return false; 2686 } 2687 } 2688 } 2689 final long origId = Binder.clearCallingIdentity(); 2690 for (int i = start; i > finishTo; i--) { 2691 ActivityRecord r = activities.get(i); 2692 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2693 // Only return the supplied result for the first activity finished 2694 resultCode = Activity.RESULT_CANCELED; 2695 resultData = null; 2696 } 2697 2698 if (parent != null && foundParentInTask) { 2699 final int parentLaunchMode = parent.info.launchMode; 2700 final int destIntentFlags = destIntent.getFlags(); 2701 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2702 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2703 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2704 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2705 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2706 } else { 2707 try { 2708 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2709 destIntent.getComponent(), 0, srec.userId); 2710 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2711 null, aInfo, parent.appToken, null, 2712 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2713 0, null, true, null, null); 2714 foundParentInTask = res == ActivityManager.START_SUCCESS; 2715 } catch (RemoteException e) { 2716 foundParentInTask = false; 2717 } 2718 requestFinishActivityLocked(parent.appToken, resultCode, 2719 resultData, "navigate-up", true); 2720 } 2721 } 2722 Binder.restoreCallingIdentity(origId); 2723 return foundParentInTask; 2724 } 2725 /** 2726 * Perform the common clean-up of an activity record. This is called both 2727 * as part of destroyActivityLocked() (when destroying the client-side 2728 * representation) and cleaning things up as a result of its hosting 2729 * processing going away, in which case there is no remaining client-side 2730 * state to destroy so only the cleanup here is needed. 2731 */ 2732 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2733 boolean setState) { 2734 if (mResumedActivity == r) { 2735 mResumedActivity = null; 2736 } 2737 if (mPausingActivity == r) { 2738 mPausingActivity = null; 2739 } 2740 if (mService.mFocusedActivity == r) { 2741 mService.mFocusedActivity = null; 2742 } 2743 2744 r.configDestroy = false; 2745 r.frozenBeforeDestroy = false; 2746 2747 if (setState) { 2748 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2749 r.state = ActivityState.DESTROYED; 2750 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2751 r.app = null; 2752 } 2753 2754 // Make sure this record is no longer in the pending finishes list. 2755 // This could happen, for example, if we are trimming activities 2756 // down to the max limit while they are still waiting to finish. 2757 mStackSupervisor.mFinishingActivities.remove(r); 2758 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2759 2760 // Remove any pending results. 2761 if (r.finishing && r.pendingResults != null) { 2762 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2763 PendingIntentRecord rec = apr.get(); 2764 if (rec != null) { 2765 mService.cancelIntentSenderLocked(rec, false); 2766 } 2767 } 2768 r.pendingResults = null; 2769 } 2770 2771 if (cleanServices) { 2772 cleanUpActivityServicesLocked(r); 2773 } 2774 2775 if (!mService.mPendingThumbnails.isEmpty()) { 2776 // There are clients waiting to receive thumbnails so, in case 2777 // this is an activity that someone is waiting for, add it 2778 // to the pending list so we can correctly update the clients. 2779 mStackSupervisor.mCancelledThumbnails.add(r); 2780 } 2781 2782 // Get rid of any pending idle timeouts. 2783 removeTimeoutsForActivityLocked(r); 2784 } 2785 2786 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2787 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2788 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2789 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2790 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2791 r.finishLaunchTickingLocked(); 2792 } 2793 2794 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2795 mStackSupervisor.removeChildActivityContainers(r); 2796 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2797 r.makeFinishing(); 2798 if (DEBUG_ADD_REMOVE) { 2799 RuntimeException here = new RuntimeException("here"); 2800 here.fillInStackTrace(); 2801 Slog.i(TAG, "Removing activity " + r + " from stack"); 2802 } 2803 r.takeFromHistory(); 2804 removeTimeoutsForActivityLocked(r); 2805 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2806 r.state = ActivityState.DESTROYED; 2807 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2808 r.app = null; 2809 mWindowManager.removeAppToken(r.appToken); 2810 if (VALIDATE_TOKENS) { 2811 validateAppTokensLocked(); 2812 } 2813 final TaskRecord task = r.task; 2814 if (task != null && task.removeActivity(r)) { 2815 if (DEBUG_STACK) Slog.i(TAG, 2816 "removeActivityFromHistoryLocked: last activity removed from " + this); 2817 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2818 mStackSupervisor.moveHomeToTop(); 2819 } 2820 removeTask(task); 2821 } 2822 cleanUpActivityServicesLocked(r); 2823 r.removeUriPermissionsLocked(); 2824 } 2825 2826 /** 2827 * Perform clean-up of service connections in an activity record. 2828 */ 2829 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2830 // Throw away any services that have been bound by this activity. 2831 if (r.connections != null) { 2832 Iterator<ConnectionRecord> it = r.connections.iterator(); 2833 while (it.hasNext()) { 2834 ConnectionRecord c = it.next(); 2835 mService.mServices.removeConnectionLocked(c, null, r); 2836 } 2837 r.connections = null; 2838 } 2839 } 2840 2841 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2842 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2843 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2844 mHandler.sendMessage(msg); 2845 } 2846 2847 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2848 boolean lastIsOpaque = false; 2849 boolean activityRemoved = false; 2850 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2851 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2852 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2853 final ActivityRecord r = activities.get(activityNdx); 2854 if (r.finishing) { 2855 continue; 2856 } 2857 if (r.fullscreen) { 2858 lastIsOpaque = true; 2859 } 2860 if (owner != null && r.app != owner) { 2861 continue; 2862 } 2863 if (!lastIsOpaque) { 2864 continue; 2865 } 2866 // We can destroy this one if we have its icicle saved and 2867 // it is not in the process of pausing/stopping/finishing. 2868 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2869 && r.haveState && !r.visible && r.stopped 2870 && r.state != ActivityState.DESTROYING 2871 && r.state != ActivityState.DESTROYED) { 2872 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2873 + " resumed=" + mResumedActivity 2874 + " pausing=" + mPausingActivity); 2875 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2876 activityRemoved = true; 2877 } 2878 } 2879 } 2880 } 2881 if (activityRemoved) { 2882 mStackSupervisor.resumeTopActivitiesLocked(); 2883 } 2884 } 2885 2886 /** 2887 * Destroy the current CLIENT SIDE instance of an activity. This may be 2888 * called both when actually finishing an activity, or when performing 2889 * a configuration switch where we destroy the current client-side object 2890 * but then create a new client-side object for this same HistoryRecord. 2891 */ 2892 final boolean destroyActivityLocked(ActivityRecord r, 2893 boolean removeFromApp, boolean oomAdj, String reason) { 2894 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2895 TAG, "Removing activity from " + reason + ": token=" + r 2896 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2897 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2898 r.userId, System.identityHashCode(r), 2899 r.task.taskId, r.shortComponentName, reason); 2900 2901 boolean removedFromHistory = false; 2902 2903 cleanUpActivityLocked(r, false, false); 2904 2905 final boolean hadApp = r.app != null; 2906 2907 if (hadApp) { 2908 if (removeFromApp) { 2909 r.app.activities.remove(r); 2910 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2911 mService.mHeavyWeightProcess = null; 2912 mService.mHandler.sendEmptyMessage( 2913 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2914 } 2915 if (r.app.activities.isEmpty()) { 2916 // No longer have activities, so update LRU list and oom adj. 2917 mService.updateLruProcessLocked(r.app, false, null); 2918 mService.updateOomAdjLocked(); 2919 } 2920 } 2921 2922 boolean skipDestroy = false; 2923 2924 try { 2925 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2926 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2927 r.configChangeFlags); 2928 } catch (Exception e) { 2929 // We can just ignore exceptions here... if the process 2930 // has crashed, our death notification will clean things 2931 // up. 2932 //Slog.w(TAG, "Exception thrown during finish", e); 2933 if (r.finishing) { 2934 removeActivityFromHistoryLocked(r); 2935 removedFromHistory = true; 2936 skipDestroy = true; 2937 } 2938 } 2939 2940 r.nowVisible = false; 2941 2942 // If the activity is finishing, we need to wait on removing it 2943 // from the list to give it a chance to do its cleanup. During 2944 // that time it may make calls back with its token so we need to 2945 // be able to find it on the list and so we don't want to remove 2946 // it from the list yet. Otherwise, we can just immediately put 2947 // it in the destroyed state since we are not removing it from the 2948 // list. 2949 if (r.finishing && !skipDestroy) { 2950 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2951 + " (destroy requested)"); 2952 r.state = ActivityState.DESTROYING; 2953 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2954 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2955 } else { 2956 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2957 r.state = ActivityState.DESTROYED; 2958 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2959 r.app = null; 2960 } 2961 } else { 2962 // remove this record from the history. 2963 if (r.finishing) { 2964 removeActivityFromHistoryLocked(r); 2965 removedFromHistory = true; 2966 } else { 2967 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2968 r.state = ActivityState.DESTROYED; 2969 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2970 r.app = null; 2971 } 2972 } 2973 2974 r.configChangeFlags = 0; 2975 2976 if (!mLRUActivities.remove(r) && hadApp) { 2977 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2978 } 2979 2980 return removedFromHistory; 2981 } 2982 2983 final void activityDestroyedLocked(IBinder token) { 2984 final long origId = Binder.clearCallingIdentity(); 2985 try { 2986 ActivityRecord r = ActivityRecord.forToken(token); 2987 if (r != null) { 2988 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2989 } 2990 2991 if (isInStackLocked(token) != null) { 2992 if (r.state == ActivityState.DESTROYING) { 2993 cleanUpActivityLocked(r, true, false); 2994 removeActivityFromHistoryLocked(r); 2995 } 2996 } 2997 mStackSupervisor.resumeTopActivitiesLocked(); 2998 } finally { 2999 Binder.restoreCallingIdentity(origId); 3000 } 3001 } 3002 3003 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3004 ProcessRecord app, String listName) { 3005 int i = list.size(); 3006 if (DEBUG_CLEANUP) Slog.v( 3007 TAG, "Removing app " + app + " from list " + listName 3008 + " with " + i + " entries"); 3009 while (i > 0) { 3010 i--; 3011 ActivityRecord r = list.get(i); 3012 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3013 if (r.app == app) { 3014 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3015 list.remove(i); 3016 removeTimeoutsForActivityLocked(r); 3017 } 3018 } 3019 } 3020 3021 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3022 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3023 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3024 "mStoppingActivities"); 3025 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3026 "mGoingToSleepActivities"); 3027 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3028 "mWaitingVisibleActivities"); 3029 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3030 "mFinishingActivities"); 3031 3032 boolean hasVisibleActivities = false; 3033 3034 // Clean out the history list. 3035 int i = numActivities(); 3036 if (DEBUG_CLEANUP) Slog.v( 3037 TAG, "Removing app " + app + " from history with " + i + " entries"); 3038 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3039 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3040 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3041 final ActivityRecord r = activities.get(activityNdx); 3042 --i; 3043 if (DEBUG_CLEANUP) Slog.v( 3044 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3045 if (r.app == app) { 3046 boolean remove; 3047 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3048 // Don't currently have state for the activity, or 3049 // it is finishing -- always remove it. 3050 remove = true; 3051 } else if (r.launchCount > 2 && 3052 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3053 // We have launched this activity too many times since it was 3054 // able to run, so give up and remove it. 3055 remove = true; 3056 } else { 3057 // The process may be gone, but the activity lives on! 3058 remove = false; 3059 } 3060 if (remove) { 3061 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3062 RuntimeException here = new RuntimeException("here"); 3063 here.fillInStackTrace(); 3064 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3065 + ": haveState=" + r.haveState 3066 + " stateNotNeeded=" + r.stateNotNeeded 3067 + " finishing=" + r.finishing 3068 + " state=" + r.state, here); 3069 } 3070 if (!r.finishing) { 3071 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3072 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3073 r.userId, System.identityHashCode(r), 3074 r.task.taskId, r.shortComponentName, 3075 "proc died without state saved"); 3076 if (r.state == ActivityState.RESUMED) { 3077 mService.updateUsageStats(r, false); 3078 } 3079 } 3080 removeActivityFromHistoryLocked(r); 3081 3082 } else { 3083 // We have the current state for this activity, so 3084 // it can be restarted later when needed. 3085 if (localLOGV) Slog.v( 3086 TAG, "Keeping entry, setting app to null"); 3087 if (r.visible) { 3088 hasVisibleActivities = true; 3089 } 3090 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3091 + r); 3092 r.app = null; 3093 r.nowVisible = false; 3094 if (!r.haveState) { 3095 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3096 "App died, clearing saved state of " + r); 3097 r.icicle = null; 3098 } 3099 } 3100 3101 cleanUpActivityLocked(r, true, true); 3102 } 3103 } 3104 } 3105 3106 return hasVisibleActivities; 3107 } 3108 3109 final void updateTransitLocked(int transit, Bundle options) { 3110 if (options != null) { 3111 ActivityRecord r = topRunningActivityLocked(null); 3112 if (r != null && r.state != ActivityState.RESUMED) { 3113 r.updateOptionsLocked(options); 3114 } else { 3115 ActivityOptions.abort(options); 3116 } 3117 } 3118 mWindowManager.prepareAppTransition(transit, false); 3119 } 3120 3121 void moveHomeTaskToTop() { 3122 final int top = mTaskHistory.size() - 1; 3123 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3124 final TaskRecord task = mTaskHistory.get(taskNdx); 3125 if (task.isHomeTask()) { 3126 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3127 mTaskHistory.remove(taskNdx); 3128 mTaskHistory.add(top, task); 3129 mWindowManager.moveTaskToTop(task.taskId); 3130 return; 3131 } 3132 } 3133 } 3134 3135 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3136 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3137 3138 final int numTasks = mTaskHistory.size(); 3139 final int index = mTaskHistory.indexOf(tr); 3140 if (numTasks == 0 || index < 0) { 3141 // nothing to do! 3142 if (reason != null && 3143 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3144 ActivityOptions.abort(options); 3145 } else { 3146 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3147 } 3148 return; 3149 } 3150 3151 moveToFront(); 3152 3153 // Shift all activities with this task up to the top 3154 // of the stack, keeping them in the same internal order. 3155 insertTaskAtTop(tr); 3156 3157 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3158 if (reason != null && 3159 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3160 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3161 ActivityRecord r = topRunningActivityLocked(null); 3162 if (r != null) { 3163 mNoAnimActivities.add(r); 3164 } 3165 ActivityOptions.abort(options); 3166 } else { 3167 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3168 } 3169 3170 mWindowManager.moveTaskToTop(tr.taskId); 3171 3172 mStackSupervisor.resumeTopActivitiesLocked(); 3173 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3174 3175 if (VALIDATE_TOKENS) { 3176 validateAppTokensLocked(); 3177 } 3178 } 3179 3180 /** 3181 * Worker method for rearranging history stack. Implements the function of moving all 3182 * activities for a specific task (gathering them if disjoint) into a single group at the 3183 * bottom of the stack. 3184 * 3185 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3186 * to premeptively cancel the move. 3187 * 3188 * @param taskId The taskId to collect and move to the bottom. 3189 * @return Returns true if the move completed, false if not. 3190 */ 3191 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3192 final TaskRecord tr = taskForIdLocked(taskId); 3193 if (tr == null) { 3194 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3195 return false; 3196 } 3197 3198 Slog.i(TAG, "moveTaskToBack: " + tr); 3199 3200 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3201 3202 // If we have a watcher, preflight the move before committing to it. First check 3203 // for *other* available tasks, but if none are available, then try again allowing the 3204 // current task to be selected. 3205 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3206 ActivityRecord next = topRunningActivityLocked(null, taskId); 3207 if (next == null) { 3208 next = topRunningActivityLocked(null, 0); 3209 } 3210 if (next != null) { 3211 // ask watcher if this is allowed 3212 boolean moveOK = true; 3213 try { 3214 moveOK = mService.mController.activityResuming(next.packageName); 3215 } catch (RemoteException e) { 3216 mService.mController = null; 3217 Watchdog.getInstance().setActivityController(null); 3218 } 3219 if (!moveOK) { 3220 return false; 3221 } 3222 } 3223 } 3224 3225 if (DEBUG_TRANSITION) Slog.v(TAG, 3226 "Prepare to back transition: task=" + taskId); 3227 3228 mTaskHistory.remove(tr); 3229 mTaskHistory.add(0, tr); 3230 3231 // There is an assumption that moving a task to the back moves it behind the home activity. 3232 // We make sure here that some activity in the stack will launch home. 3233 ActivityRecord lastActivity = null; 3234 int numTasks = mTaskHistory.size(); 3235 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3236 final TaskRecord task = mTaskHistory.get(taskNdx); 3237 if (task.mOnTopOfHome) { 3238 break; 3239 } 3240 if (taskNdx == 1) { 3241 // Set the last task before tr to go to home. 3242 task.mOnTopOfHome = true; 3243 } 3244 } 3245 3246 if (reason != null && 3247 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3248 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3249 ActivityRecord r = topRunningActivityLocked(null); 3250 if (r != null) { 3251 mNoAnimActivities.add(r); 3252 } 3253 } else { 3254 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3255 } 3256 mWindowManager.moveTaskToBottom(taskId); 3257 3258 if (VALIDATE_TOKENS) { 3259 validateAppTokensLocked(); 3260 } 3261 3262 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3263 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3264 tr.mOnTopOfHome = false; 3265 return mStackSupervisor.resumeHomeActivity(null); 3266 } 3267 3268 mStackSupervisor.resumeTopActivitiesLocked(); 3269 return true; 3270 } 3271 3272 static final void logStartActivity(int tag, ActivityRecord r, 3273 TaskRecord task) { 3274 final Uri data = r.intent.getData(); 3275 final String strData = data != null ? data.toSafeString() : null; 3276 3277 EventLog.writeEvent(tag, 3278 r.userId, System.identityHashCode(r), task.taskId, 3279 r.shortComponentName, r.intent.getAction(), 3280 r.intent.getType(), strData, r.intent.getFlags()); 3281 } 3282 3283 /** 3284 * Make sure the given activity matches the current configuration. Returns 3285 * false if the activity had to be destroyed. Returns true if the 3286 * configuration is the same, or the activity will remain running as-is 3287 * for whatever reason. Ensures the HistoryRecord is updated with the 3288 * correct configuration and all other bookkeeping is handled. 3289 */ 3290 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3291 int globalChanges) { 3292 if (mConfigWillChange) { 3293 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3294 "Skipping config check (will change): " + r); 3295 return true; 3296 } 3297 3298 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3299 "Ensuring correct configuration: " + r); 3300 3301 // Short circuit: if the two configurations are the exact same 3302 // object (the common case), then there is nothing to do. 3303 Configuration newConfig = mService.mConfiguration; 3304 if (r.configuration == newConfig && !r.forceNewConfig) { 3305 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3306 "Configuration unchanged in " + r); 3307 return true; 3308 } 3309 3310 // We don't worry about activities that are finishing. 3311 if (r.finishing) { 3312 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3313 "Configuration doesn't matter in finishing " + r); 3314 r.stopFreezingScreenLocked(false); 3315 return true; 3316 } 3317 3318 // Okay we now are going to make this activity have the new config. 3319 // But then we need to figure out how it needs to deal with that. 3320 Configuration oldConfig = r.configuration; 3321 r.configuration = newConfig; 3322 3323 // Determine what has changed. May be nothing, if this is a config 3324 // that has come back from the app after going idle. In that case 3325 // we just want to leave the official config object now in the 3326 // activity and do nothing else. 3327 final int changes = oldConfig.diff(newConfig); 3328 if (changes == 0 && !r.forceNewConfig) { 3329 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3330 "Configuration no differences in " + r); 3331 return true; 3332 } 3333 3334 // If the activity isn't currently running, just leave the new 3335 // configuration and it will pick that up next time it starts. 3336 if (r.app == null || r.app.thread == null) { 3337 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3338 "Configuration doesn't matter not running " + r); 3339 r.stopFreezingScreenLocked(false); 3340 r.forceNewConfig = false; 3341 return true; 3342 } 3343 3344 // Figure out how to handle the changes between the configurations. 3345 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3346 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3347 + Integer.toHexString(changes) + ", handles=0x" 3348 + Integer.toHexString(r.info.getRealConfigChanged()) 3349 + ", newConfig=" + newConfig); 3350 } 3351 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3352 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3353 r.configChangeFlags |= changes; 3354 r.startFreezingScreenLocked(r.app, globalChanges); 3355 r.forceNewConfig = false; 3356 if (r.app == null || r.app.thread == null) { 3357 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3358 "Config is destroying non-running " + r); 3359 destroyActivityLocked(r, true, false, "config"); 3360 } else if (r.state == ActivityState.PAUSING) { 3361 // A little annoying: we are waiting for this activity to 3362 // finish pausing. Let's not do anything now, but just 3363 // flag that it needs to be restarted when done pausing. 3364 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3365 "Config is skipping already pausing " + r); 3366 r.configDestroy = true; 3367 return true; 3368 } else if (r.state == ActivityState.RESUMED) { 3369 // Try to optimize this case: the configuration is changing 3370 // and we need to restart the top, resumed activity. 3371 // Instead of doing the normal handshaking, just say 3372 // "restart!". 3373 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3374 "Config is relaunching resumed " + r); 3375 relaunchActivityLocked(r, r.configChangeFlags, true); 3376 r.configChangeFlags = 0; 3377 } else { 3378 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3379 "Config is relaunching non-resumed " + r); 3380 relaunchActivityLocked(r, r.configChangeFlags, false); 3381 r.configChangeFlags = 0; 3382 } 3383 3384 // All done... tell the caller we weren't able to keep this 3385 // activity around. 3386 return false; 3387 } 3388 3389 // Default case: the activity can handle this new configuration, so 3390 // hand it over. Note that we don't need to give it the new 3391 // configuration, since we always send configuration changes to all 3392 // process when they happen so it can just use whatever configuration 3393 // it last got. 3394 if (r.app != null && r.app.thread != null) { 3395 try { 3396 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3397 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3398 } catch (RemoteException e) { 3399 // If process died, whatever. 3400 } 3401 } 3402 r.stopFreezingScreenLocked(false); 3403 3404 return true; 3405 } 3406 3407 private boolean relaunchActivityLocked(ActivityRecord r, 3408 int changes, boolean andResume) { 3409 List<ResultInfo> results = null; 3410 List<Intent> newIntents = null; 3411 if (andResume) { 3412 results = r.results; 3413 newIntents = r.newIntents; 3414 } 3415 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3416 + " with results=" + results + " newIntents=" + newIntents 3417 + " andResume=" + andResume); 3418 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3419 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3420 r.task.taskId, r.shortComponentName); 3421 3422 r.startFreezingScreenLocked(r.app, 0); 3423 3424 mStackSupervisor.removeChildActivityContainers(r); 3425 3426 try { 3427 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3428 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3429 + r); 3430 r.forceNewConfig = false; 3431 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3432 changes, !andResume, new Configuration(mService.mConfiguration)); 3433 // Note: don't need to call pauseIfSleepingLocked() here, because 3434 // the caller will only pass in 'andResume' if this activity is 3435 // currently resumed, which implies we aren't sleeping. 3436 } catch (RemoteException e) { 3437 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3438 } 3439 3440 if (andResume) { 3441 r.results = null; 3442 r.newIntents = null; 3443 r.state = ActivityState.RESUMED; 3444 } else { 3445 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3446 r.state = ActivityState.PAUSED; 3447 } 3448 3449 return true; 3450 } 3451 3452 boolean willActivityBeVisibleLocked(IBinder token) { 3453 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3454 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3455 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3456 final ActivityRecord r = activities.get(activityNdx); 3457 if (r.appToken == token) { 3458 return true; 3459 } 3460 if (r.fullscreen && !r.finishing) { 3461 return false; 3462 } 3463 } 3464 } 3465 final ActivityRecord r = ActivityRecord.forToken(token); 3466 if (r == null) { 3467 return false; 3468 } 3469 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3470 + " would have returned true for r=" + r); 3471 return !r.finishing; 3472 } 3473 3474 void closeSystemDialogsLocked() { 3475 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3476 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3477 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3478 final ActivityRecord r = activities.get(activityNdx); 3479 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3480 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3481 } 3482 } 3483 } 3484 } 3485 3486 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3487 boolean didSomething = false; 3488 TaskRecord lastTask = null; 3489 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3490 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3491 int numActivities = activities.size(); 3492 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3493 ActivityRecord r = activities.get(activityNdx); 3494 final boolean samePackage = r.packageName.equals(name) 3495 || (name == null && r.userId == userId); 3496 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3497 && (samePackage || r.task == lastTask) 3498 && (r.app == null || evenPersistent || !r.app.persistent)) { 3499 if (!doit) { 3500 if (r.finishing) { 3501 // If this activity is just finishing, then it is not 3502 // interesting as far as something to stop. 3503 continue; 3504 } 3505 return true; 3506 } 3507 didSomething = true; 3508 Slog.i(TAG, " Force finishing activity " + r); 3509 if (samePackage) { 3510 if (r.app != null) { 3511 r.app.removed = true; 3512 } 3513 r.app = null; 3514 } 3515 lastTask = r.task; 3516 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3517 true)) { 3518 // r has been deleted from mActivities, accommodate. 3519 --numActivities; 3520 --activityNdx; 3521 } 3522 } 3523 } 3524 } 3525 return didSomething; 3526 } 3527 3528 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3529 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3530 ActivityRecord topRecord = null; 3531 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3532 final TaskRecord task = mTaskHistory.get(taskNdx); 3533 ActivityRecord r = null; 3534 ActivityRecord top = null; 3535 int numActivities = 0; 3536 int numRunning = 0; 3537 final ArrayList<ActivityRecord> activities = task.mActivities; 3538 if (activities.isEmpty()) { 3539 continue; 3540 } 3541 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3542 r = activities.get(activityNdx); 3543 3544 // Initialize state for next task if needed. 3545 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3546 top = r; 3547 numActivities = numRunning = 0; 3548 } 3549 3550 // Add 'r' into the current task. 3551 numActivities++; 3552 if (r.app != null && r.app.thread != null) { 3553 numRunning++; 3554 } 3555 3556 if (localLOGV) Slog.v( 3557 TAG, r.intent.getComponent().flattenToShortString() 3558 + ": task=" + r.task); 3559 } 3560 3561 RunningTaskInfo ci = new RunningTaskInfo(); 3562 ci.id = task.taskId; 3563 ci.baseActivity = r.intent.getComponent(); 3564 ci.topActivity = top.intent.getComponent(); 3565 ci.lastActiveTime = task.lastActiveTime; 3566 3567 if (top.thumbHolder != null) { 3568 ci.description = top.thumbHolder.lastDescription; 3569 } 3570 ci.numActivities = numActivities; 3571 ci.numRunning = numRunning; 3572 //System.out.println( 3573 // "#" + maxNum + ": " + " descr=" + ci.description); 3574 if (receiver != null) { 3575 if (localLOGV) Slog.v( 3576 TAG, "State=" + top.state + "Idle=" + top.idle 3577 + " app=" + top.app 3578 + " thr=" + (top.app != null ? top.app.thread : null)); 3579 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3580 if (top.idle && top.app != null && top.app.thread != null) { 3581 topRecord = top; 3582 } else { 3583 top.thumbnailNeeded = true; 3584 } 3585 } 3586 pending.pendingRecords.add(top); 3587 } 3588 list.add(ci); 3589 } 3590 return topRecord; 3591 } 3592 3593 public void unhandledBackLocked() { 3594 final int top = mTaskHistory.size() - 1; 3595 if (DEBUG_SWITCH) Slog.d( 3596 TAG, "Performing unhandledBack(): top activity at " + top); 3597 if (top >= 0) { 3598 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3599 int activityTop = activities.size() - 1; 3600 if (activityTop > 0) { 3601 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3602 "unhandled-back", true); 3603 } 3604 } 3605 } 3606 3607 /** 3608 * Reset local parameters because an app's activity died. 3609 * @param app The app of the activity that died. 3610 * @return result from removeHistoryRecordsForAppLocked. 3611 */ 3612 boolean handleAppDiedLocked(ProcessRecord app) { 3613 if (mPausingActivity != null && mPausingActivity.app == app) { 3614 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3615 "App died while pausing: " + mPausingActivity); 3616 mPausingActivity = null; 3617 } 3618 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3619 mLastPausedActivity = null; 3620 mLastNoHistoryActivity = null; 3621 } 3622 3623 return removeHistoryRecordsForAppLocked(app); 3624 } 3625 3626 void handleAppCrashLocked(ProcessRecord app) { 3627 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3628 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3629 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3630 final ActivityRecord r = activities.get(activityNdx); 3631 if (r.app == app) { 3632 Slog.w(TAG, " Force finishing activity " 3633 + r.intent.getComponent().flattenToShortString()); 3634 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3635 } 3636 } 3637 } 3638 } 3639 3640 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3641 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3642 boolean printed = false; 3643 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3644 final TaskRecord task = mTaskHistory.get(taskNdx); 3645 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3646 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3647 dumpClient, dumpPackage, needSep, header, 3648 " Task id #" + task.taskId); 3649 if (printed) { 3650 header = null; 3651 } 3652 } 3653 return printed; 3654 } 3655 3656 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3657 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3658 3659 if ("all".equals(name)) { 3660 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3661 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3662 } 3663 } else if ("top".equals(name)) { 3664 final int top = mTaskHistory.size() - 1; 3665 if (top >= 0) { 3666 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3667 int listTop = list.size() - 1; 3668 if (listTop >= 0) { 3669 activities.add(list.get(listTop)); 3670 } 3671 } 3672 } else { 3673 ItemMatcher matcher = new ItemMatcher(); 3674 matcher.build(name); 3675 3676 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3677 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3678 if (matcher.match(r1, r1.intent.getComponent())) { 3679 activities.add(r1); 3680 } 3681 } 3682 } 3683 } 3684 3685 return activities; 3686 } 3687 3688 ActivityRecord restartPackage(String packageName) { 3689 ActivityRecord starting = topRunningActivityLocked(null); 3690 3691 // All activities that came from the package must be 3692 // restarted as if there was a config change. 3693 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3694 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3695 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3696 final ActivityRecord a = activities.get(activityNdx); 3697 if (a.info.packageName.equals(packageName)) { 3698 a.forceNewConfig = true; 3699 if (starting != null && a == starting && a.visible) { 3700 a.startFreezingScreenLocked(starting.app, 3701 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3702 } 3703 } 3704 } 3705 } 3706 3707 return starting; 3708 } 3709 3710 void removeTask(TaskRecord task) { 3711 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3712 mWindowManager.removeTask(task.taskId); 3713 final ActivityRecord r = mResumedActivity; 3714 if (r != null && r.task == task) { 3715 mResumedActivity = null; 3716 } 3717 3718 final int taskNdx = mTaskHistory.indexOf(task); 3719 final int topTaskNdx = mTaskHistory.size() - 1; 3720 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3721 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3722 } 3723 mTaskHistory.remove(task); 3724 3725 if (mTaskHistory.isEmpty()) { 3726 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3727 if (isOnHomeDisplay()) { 3728 mStackSupervisor.moveHomeStack(!isHomeStack()); 3729 } 3730 if (mStacks != null) { 3731 mStacks.remove(this); 3732 mStacks.add(0, this); 3733 } 3734 } 3735 } 3736 3737 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, boolean toTop) { 3738 TaskRecord task = new TaskRecord(taskId, info, intent); 3739 addTask(task, toTop); 3740 return task; 3741 } 3742 3743 ArrayList<TaskRecord> getAllTasks() { 3744 return new ArrayList<TaskRecord>(mTaskHistory); 3745 } 3746 3747 void addTask(final TaskRecord task, final boolean toTop) { 3748 task.stack = this; 3749 if (toTop) { 3750 insertTaskAtTop(task); 3751 } else { 3752 mTaskHistory.add(0, task); 3753 } 3754 } 3755 3756 public int getStackId() { 3757 return mStackId; 3758 } 3759 3760 @Override 3761 public String toString() { 3762 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3763 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3764 } 3765} 3766