ActivityStack.java revision aea74a5977ca9f1054926eb24f247562c3a4a6ba
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 com.android.internal.os.BatteryStatsImpl; 40import com.android.server.Watchdog; 41import com.android.server.am.ActivityManagerService.ItemMatcher; 42import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 43import com.android.server.wm.AppTransition; 44import com.android.server.wm.TaskGroup; 45import com.android.server.wm.WindowManagerService; 46 47import android.app.Activity; 48import android.app.ActivityManager; 49import android.app.ActivityOptions; 50import android.app.AppGlobals; 51import android.app.IActivityController; 52import android.app.IThumbnailReceiver; 53import android.app.ResultInfo; 54import android.app.ActivityManager.RunningTaskInfo; 55import android.content.ComponentName; 56import android.content.Intent; 57import android.content.pm.ActivityInfo; 58import android.content.pm.PackageManager; 59import android.content.res.Configuration; 60import android.content.res.Resources; 61import android.graphics.Bitmap; 62import android.net.Uri; 63import android.os.Binder; 64import android.os.Bundle; 65import android.os.Debug; 66import android.os.Handler; 67import android.os.IBinder; 68import android.os.Looper; 69import android.os.Message; 70import android.os.RemoteException; 71import android.os.SystemClock; 72import android.os.SystemProperties; 73import android.os.Trace; 74import android.os.UserHandle; 75import android.util.EventLog; 76import android.util.Slog; 77import android.view.Display; 78 79import java.io.FileDescriptor; 80import java.io.PrintWriter; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.Iterator; 84import java.util.List; 85import java.util.Objects; 86 87/** 88 * State and management of a single stack of activities. 89 */ 90final class ActivityStack { 91 92 // Ticks during which we check progress while waiting for an app to launch. 93 static final int LAUNCH_TICK = 500; 94 95 // How long we wait until giving up on the last activity to pause. This 96 // is short because it directly impacts the responsiveness of starting the 97 // next activity. 98 static final int PAUSE_TIMEOUT = 500; 99 100 // How long we wait for the activity to tell us it has stopped before 101 // giving up. This is a good amount of time because we really need this 102 // from the application in order to get its saved state. 103 static final int STOP_TIMEOUT = 10*1000; 104 105 // How long we wait until giving up on an activity telling us it has 106 // finished destroying itself. 107 static final int DESTROY_TIMEOUT = 10*1000; 108 109 // How long until we reset a task when the user returns to it. Currently 110 // disabled. 111 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 112 113 // How long between activity launches that we consider safe to not warn 114 // the user about an unexpected activity being launched on top. 115 static final long START_WARN_TIME = 5*1000; 116 117 // Set to false to disable the preview that is shown while a new activity 118 // is being started. 119 static final boolean SHOW_APP_STARTING_PREVIEW = true; 120 121 // How long to wait for all background Activities to redraw following a call to 122 // convertToTranslucent(). 123 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 124 125 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 126 127 enum ActivityState { 128 INITIALIZING, 129 RESUMED, 130 PAUSING, 131 PAUSED, 132 STOPPING, 133 STOPPED, 134 FINISHING, 135 DESTROYING, 136 DESTROYED 137 } 138 139 final ActivityManagerService mService; 140 final WindowManagerService mWindowManager; 141 142 /** 143 * The back history of all previous (and possibly still 144 * running) activities. It contains #TaskRecord objects. 145 */ 146 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 147 148 /** 149 * Used for validating app tokens with window manager. 150 */ 151 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 152 153 /** 154 * List of running activities, sorted by recent usage. 155 * The first entry in the list is the least recently used. 156 * It contains HistoryRecord objects. 157 */ 158 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 159 160 /** 161 * Animations that for the current transition have requested not to 162 * be considered for the transition animation. 163 */ 164 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 165 166 /** 167 * When we are in the process of pausing an activity, before starting the 168 * next one, this variable holds the activity that is currently being paused. 169 */ 170 ActivityRecord mPausingActivity = null; 171 172 /** 173 * This is the last activity that we put into the paused state. This is 174 * used to determine if we need to do an activity transition while sleeping, 175 * when we normally hold the top activity paused. 176 */ 177 ActivityRecord mLastPausedActivity = null; 178 179 /** 180 * Activities that specify No History must be removed once the user navigates away from them. 181 * If the device goes to sleep with such an activity in the paused state then we save it here 182 * and finish it later if another activity replaces it on wakeup. 183 */ 184 ActivityRecord mLastNoHistoryActivity = null; 185 186 /** 187 * Current activity that is resumed, or null if there is none. 188 */ 189 ActivityRecord mResumedActivity = null; 190 191 /** 192 * This is the last activity that has been started. It is only used to 193 * identify when multiple activities are started at once so that the user 194 * can be warned they may not be in the activity they think they are. 195 */ 196 ActivityRecord mLastStartedActivity = null; 197 198 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 199 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 200 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 201 // Activity in mTranslucentActivityWaiting is notified via 202 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 203 // background activity being drawn then the same call will be made with a true value. 204 ActivityRecord mTranslucentActivityWaiting = null; 205 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 206 new ArrayList<ActivityRecord>(); 207 208 /** 209 * Set when we know we are going to be calling updateConfiguration() 210 * soon, so want to skip intermediate config checks. 211 */ 212 boolean mConfigWillChange; 213 214 long mLaunchStartTime = 0; 215 long mFullyDrawnStartTime = 0; 216 217 /** 218 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 219 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 220 */ 221 private ActivityRecord mLastScreenshotActivity = null; 222 private Bitmap mLastScreenshotBitmap = null; 223 224 int mThumbnailWidth = -1; 225 int mThumbnailHeight = -1; 226 227 int mCurrentUser; 228 229 final int mStackId; 230 final ActivityContainer mActivityContainer; 231 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 232 ArrayList<ActivityStack> mStacks; 233 /** The attached Display's unique identifier, or -1 if detached */ 234 int mDisplayId; 235 236 /** Run all ActivityStacks through this */ 237 final ActivityStackSupervisor mStackSupervisor; 238 239 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 240 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 241 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 242 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 243 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 244 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 245 246 static class ScheduleDestroyArgs { 247 final ProcessRecord mOwner; 248 final boolean mOomAdj; 249 final String mReason; 250 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 251 mOwner = owner; 252 mOomAdj = oomAdj; 253 mReason = reason; 254 } 255 } 256 257 final Handler mHandler; 258 259 final class ActivityStackHandler extends Handler { 260 //public Handler() { 261 // if (localLOGV) Slog.v(TAG, "Handler started!"); 262 //} 263 ActivityStackHandler(Looper looper) { 264 super(looper); 265 } 266 267 @Override 268 public void handleMessage(Message msg) { 269 switch (msg.what) { 270 case PAUSE_TIMEOUT_MSG: { 271 ActivityRecord r = (ActivityRecord)msg.obj; 272 // We don't at this point know if the activity is fullscreen, 273 // so we need to be conservative and assume it isn't. 274 Slog.w(TAG, "Activity pause timeout for " + r); 275 synchronized (mService) { 276 if (r.app != null) { 277 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 278 } 279 activityPausedLocked(r.appToken, true); 280 } 281 } break; 282 case LAUNCH_TICK_MSG: { 283 ActivityRecord r = (ActivityRecord)msg.obj; 284 synchronized (mService) { 285 if (r.continueLaunchTickingLocked()) { 286 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 287 } 288 } 289 } break; 290 case DESTROY_TIMEOUT_MSG: { 291 ActivityRecord r = (ActivityRecord)msg.obj; 292 // We don't at this point know if the activity is fullscreen, 293 // so we need to be conservative and assume it isn't. 294 Slog.w(TAG, "Activity destroy timeout for " + r); 295 synchronized (mService) { 296 activityDestroyedLocked(r != null ? r.appToken : null); 297 } 298 } break; 299 case STOP_TIMEOUT_MSG: { 300 ActivityRecord r = (ActivityRecord)msg.obj; 301 // We don't at this point know if the activity is fullscreen, 302 // so we need to be conservative and assume it isn't. 303 Slog.w(TAG, "Activity stop timeout for " + r); 304 synchronized (mService) { 305 if (r.isInHistory()) { 306 activityStoppedLocked(r, null, null, null); 307 } 308 } 309 } break; 310 case DESTROY_ACTIVITIES_MSG: { 311 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 312 synchronized (mService) { 313 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 314 } 315 } break; 316 case TRANSLUCENT_TIMEOUT_MSG: { 317 synchronized (mService) { 318 notifyActivityDrawnLocked(null); 319 } 320 } break; 321 } 322 } 323 } 324 325 int numActivities() { 326 int count = 0; 327 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 328 count += mTaskHistory.get(taskNdx).mActivities.size(); 329 } 330 return count; 331 } 332 333 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 334 mActivityContainer = activityContainer; 335 mStackSupervisor = activityContainer.getOuter(); 336 mService = mStackSupervisor.mService; 337 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 338 mWindowManager = mService.mWindowManager; 339 mStackId = activityContainer.mStackId; 340 mCurrentUser = mService.mCurrentUserId; 341 } 342 343 /** 344 * Checks whether the userid is either the current user or a related user. 345 */ 346 private boolean isRelatedToOrCurrentUserLocked(int userId) { 347 if (mCurrentUser == userId) return true; 348 for (int i = 0; i < mService.mRelatedUserIds.length; i++) { 349 if (mService.mRelatedUserIds[i] == userId) return true; 350 } 351 return false; 352 } 353 354 boolean okToShowLocked(ActivityRecord r) { 355 return isRelatedToOrCurrentUserLocked(r.userId) 356 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 357 } 358 359 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 360 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 361 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 362 if (r != null) { 363 return r; 364 } 365 } 366 return null; 367 } 368 369 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 370 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 371 final TaskRecord task = mTaskHistory.get(taskNdx); 372 final ArrayList<ActivityRecord> activities = task.mActivities; 373 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 374 ActivityRecord r = activities.get(activityNdx); 375 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 376 return r; 377 } 378 } 379 } 380 return null; 381 } 382 383 /** 384 * This is a simplified version of topRunningActivityLocked that provides a number of 385 * optional skip-over modes. It is intended for use with the ActivityController hook only. 386 * 387 * @param token If non-null, any history records matching this token will be skipped. 388 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 389 * 390 * @return Returns the HistoryRecord of the next activity on the stack. 391 */ 392 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 393 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 394 TaskRecord task = mTaskHistory.get(taskNdx); 395 if (task.taskId == taskId) { 396 continue; 397 } 398 ArrayList<ActivityRecord> activities = task.mActivities; 399 for (int i = activities.size() - 1; i >= 0; --i) { 400 final ActivityRecord r = activities.get(i); 401 // Note: the taskId check depends on real taskId fields being non-zero 402 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 403 return r; 404 } 405 } 406 } 407 return null; 408 } 409 410 final ActivityRecord topActivity() { 411 // Iterate to find the first non-empty task stack. Note that this code can 412 // be simplified once we stop storing tasks with empty mActivities lists. 413 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 414 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 415 final int topActivityNdx = activities.size() - 1; 416 if (topActivityNdx >= 0) { 417 return activities.get(topActivityNdx); 418 } 419 } 420 return null; 421 } 422 423 final TaskRecord topTask() { 424 final int size = mTaskHistory.size(); 425 if (size > 0) { 426 return mTaskHistory.get(size - 1); 427 } 428 return null; 429 } 430 431 TaskRecord taskForIdLocked(int id) { 432 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 433 final TaskRecord task = mTaskHistory.get(taskNdx); 434 if (task.taskId == id) { 435 return task; 436 } 437 } 438 return null; 439 } 440 441 ActivityRecord isInStackLocked(IBinder token) { 442 final ActivityRecord r = ActivityRecord.forToken(token); 443 if (r != null) { 444 final TaskRecord task = r.task; 445 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 446 if (task.stack != this) Slog.w(TAG, 447 "Illegal state! task does not point to stack it is in."); 448 return r; 449 } 450 } 451 return null; 452 } 453 454 final boolean updateLRUListLocked(ActivityRecord r) { 455 final boolean hadit = mLRUActivities.remove(r); 456 mLRUActivities.add(r); 457 return hadit; 458 } 459 460 final boolean isHomeStack() { 461 return mStackId == HOME_STACK_ID; 462 } 463 464 final boolean isOnHomeDisplay() { 465 return isAttached() && 466 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 467 } 468 469 final void moveToFront() { 470 if (isAttached()) { 471 if (isOnHomeDisplay()) { 472 mStackSupervisor.moveHomeStack(isHomeStack()); 473 } 474 mStacks.remove(this); 475 mStacks.add(this); 476 } 477 } 478 479 final boolean isAttached() { 480 return mStacks != null; 481 } 482 483 /** 484 * Returns the top activity in any existing task matching the given 485 * Intent. Returns null if no such task is found. 486 */ 487 ActivityRecord findTaskLocked(ActivityRecord target) { 488 Intent intent = target.intent; 489 ActivityInfo info = target.info; 490 ComponentName cls = intent.getComponent(); 491 if (info.targetActivity != null) { 492 cls = new ComponentName(info.packageName, info.targetActivity); 493 } 494 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 495 496 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 497 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 498 final TaskRecord task = mTaskHistory.get(taskNdx); 499 if (task.userId != userId) { 500 // Looking for a different task. 501 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 502 continue; 503 } 504 final ActivityRecord r = task.getTopActivity(); 505 if (r == null || r.finishing || r.userId != userId || 506 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 507 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 508 continue; 509 } 510 511 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 512 + r.task.intent.getComponent().flattenToShortString() 513 + "/aff=" + r.task.affinity + " to new cls=" 514 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 515 if (task.affinity != null) { 516 if (task.affinity.equals(info.taskAffinity)) { 517 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 518 return r; 519 } 520 } else if (task.intent != null && task.intent.getComponent().equals(cls)) { 521 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 522 //dump(); 523 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 524 + r.intent); 525 return r; 526 } else if (task.affinityIntent != null 527 && task.affinityIntent.getComponent().equals(cls)) { 528 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 529 //dump(); 530 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 531 + r.intent); 532 return r; 533 } else if (DEBUG_TASKS) { 534 Slog.d(TAG, "Not a match: " + task); 535 } 536 } 537 538 return null; 539 } 540 541 /** 542 * Returns the first activity (starting from the top of the stack) that 543 * is the same as the given activity. Returns null if no such activity 544 * is found. 545 */ 546 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 547 ComponentName cls = intent.getComponent(); 548 if (info.targetActivity != null) { 549 cls = new ComponentName(info.packageName, info.targetActivity); 550 } 551 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 552 553 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 554 TaskRecord task = mTaskHistory.get(taskNdx); 555 if (!isRelatedToOrCurrentUserLocked(task.userId)) { 556 return null; 557 } 558 final ArrayList<ActivityRecord> activities = task.mActivities; 559 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 560 ActivityRecord r = activities.get(activityNdx); 561 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 562 //Slog.i(TAG, "Found matching class!"); 563 //dump(); 564 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 565 return r; 566 } 567 } 568 } 569 570 return null; 571 } 572 573 /* 574 * Move the activities around in the stack to bring a user to the foreground. 575 */ 576 final void switchUserLocked(int userId) { 577 if (mCurrentUser == userId) { 578 return; 579 } 580 mCurrentUser = userId; 581 582 // Move userId's tasks to the top. 583 int index = mTaskHistory.size(); 584 for (int i = 0; i < index; ) { 585 TaskRecord task = mTaskHistory.get(i); 586 if (isRelatedToOrCurrentUserLocked(task.userId)) { 587 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 588 " moving " + task + " to top"); 589 mTaskHistory.remove(i); 590 mTaskHistory.add(task); 591 --index; 592 // Use same value for i. 593 } else { 594 ++i; 595 } 596 } 597 if (VALIDATE_TOKENS) { 598 validateAppTokensLocked(); 599 } 600 } 601 602 void minimalResumeActivityLocked(ActivityRecord r) { 603 r.state = ActivityState.RESUMED; 604 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 605 + " (starting new instance)"); 606 r.stopped = false; 607 mResumedActivity = r; 608 r.task.touchActiveTime(); 609 mService.addRecentTaskLocked(r.task); 610 completeResumeLocked(r); 611 mStackSupervisor.checkReadyForSleepLocked(); 612 setLaunchTime(r); 613 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 614 } 615 616 private void startLaunchTraces() { 617 if (mFullyDrawnStartTime != 0) { 618 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 619 } 620 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 621 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 622 } 623 624 private void stopFullyDrawnTraceIfNeeded() { 625 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 626 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 627 mFullyDrawnStartTime = 0; 628 } 629 } 630 631 void setLaunchTime(ActivityRecord r) { 632 if (r.displayStartTime == 0) { 633 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 634 if (mLaunchStartTime == 0) { 635 startLaunchTraces(); 636 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 637 } 638 } else if (mLaunchStartTime == 0) { 639 startLaunchTraces(); 640 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 641 } 642 } 643 644 void clearLaunchTime(ActivityRecord r) { 645 // Make sure that there is no activity waiting for this to launch. 646 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 647 r.displayStartTime = r.fullyDrawnStartTime = 0; 648 } else { 649 mStackSupervisor.removeTimeoutsForActivityLocked(r); 650 mStackSupervisor.scheduleIdleTimeoutLocked(r); 651 } 652 } 653 654 void awakeFromSleepingLocked() { 655 // Ensure activities are no longer sleeping. 656 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 657 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 658 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 659 activities.get(activityNdx).setSleeping(false); 660 } 661 } 662 } 663 664 /** 665 * @return true if something must be done before going to sleep. 666 */ 667 boolean checkReadyForSleepLocked() { 668 if (mResumedActivity != null) { 669 // Still have something resumed; can't sleep until it is paused. 670 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 671 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 672 startPausingLocked(false, true); 673 return true; 674 } 675 if (mPausingActivity != null) { 676 // Still waiting for something to pause; can't sleep yet. 677 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 678 return true; 679 } 680 681 return false; 682 } 683 684 void goToSleep() { 685 ensureActivitiesVisibleLocked(null, 0); 686 687 // Make sure any stopped but visible activities are now sleeping. 688 // This ensures that the activity's onStop() is called. 689 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 690 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 691 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 692 final ActivityRecord r = activities.get(activityNdx); 693 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 694 r.setSleeping(true); 695 } 696 } 697 } 698 } 699 700 public final Bitmap screenshotActivities(ActivityRecord who) { 701 if (who.noDisplay) { 702 return null; 703 } 704 705 TaskRecord tr = who.task; 706 if (mService.getMostRecentTask() != tr && tr.intent != null && 707 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 708 // If this task is being excluded from recents, we don't want to take 709 // the expense of capturing a thumbnail, since we will never show it. 710 return null; 711 } 712 713 Resources res = mService.mContext.getResources(); 714 int w = mThumbnailWidth; 715 int h = mThumbnailHeight; 716 if (w < 0) { 717 if (SystemProperties.getBoolean("persist.recents.use_alternate", false)) { 718 mThumbnailWidth = w = 719 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 720 mThumbnailHeight = h = 721 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 722 } else { 723 mThumbnailWidth = w = 724 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 725 mThumbnailHeight = h = 726 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 727 } 728 } 729 730 if (w > 0) { 731 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 732 || mLastScreenshotActivity.state == ActivityState.RESUMED 733 || mLastScreenshotBitmap.getWidth() != w 734 || mLastScreenshotBitmap.getHeight() != h) { 735 mLastScreenshotActivity = who; 736 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 737 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 738 } 739 if (mLastScreenshotBitmap != null) { 740 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 741 } 742 } 743 return null; 744 } 745 746 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 747 if (mPausingActivity != null) { 748 Slog.e(TAG, "Trying to pause when pause is already pending for " 749 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 750 } 751 ActivityRecord prev = mResumedActivity; 752 if (prev == null) { 753 Slog.e(TAG, "Trying to pause when nothing is resumed", 754 new RuntimeException("here").fillInStackTrace()); 755 mStackSupervisor.resumeTopActivitiesLocked(); 756 return; 757 } 758 759 if (mActivityContainer.mParentActivity == null) { 760 // Top level stack, not a child. Look for child stacks. 761 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 762 } 763 764 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 765 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 766 mResumedActivity = null; 767 mPausingActivity = prev; 768 mLastPausedActivity = prev; 769 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 770 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 771 prev.state = ActivityState.PAUSING; 772 prev.task.touchActiveTime(); 773 clearLaunchTime(prev); 774 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 775 if (next == null || next.task != prev.task) { 776 prev.updateThumbnail(screenshotActivities(prev), null); 777 } 778 stopFullyDrawnTraceIfNeeded(); 779 780 mService.updateCpuStats(); 781 782 if (prev.app != null && prev.app.thread != null) { 783 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 784 try { 785 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 786 prev.userId, System.identityHashCode(prev), 787 prev.shortComponentName); 788 mService.updateUsageStats(prev, false); 789 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 790 userLeaving, prev.configChangeFlags); 791 } catch (Exception e) { 792 // Ignore exception, if process died other code will cleanup. 793 Slog.w(TAG, "Exception thrown during pause", e); 794 mPausingActivity = null; 795 mLastPausedActivity = null; 796 mLastNoHistoryActivity = null; 797 } 798 } else { 799 mPausingActivity = null; 800 mLastPausedActivity = null; 801 mLastNoHistoryActivity = null; 802 } 803 804 // If we are not going to sleep, we want to ensure the device is 805 // awake until the next activity is started. 806 if (!mService.isSleepingOrShuttingDown()) { 807 mStackSupervisor.acquireLaunchWakelock(); 808 } 809 810 if (mPausingActivity != null) { 811 // Have the window manager pause its key dispatching until the new 812 // activity has started. If we're pausing the activity just because 813 // the screen is being turned off and the UI is sleeping, don't interrupt 814 // key dispatch; the same activity will pick it up again on wakeup. 815 if (!uiSleeping) { 816 prev.pauseKeyDispatchingLocked(); 817 } else { 818 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 819 } 820 821 // Schedule a pause timeout in case the app doesn't respond. 822 // We don't give it much time because this directly impacts the 823 // responsiveness seen by the user. 824 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 825 msg.obj = prev; 826 prev.pauseTime = SystemClock.uptimeMillis(); 827 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 828 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 829 } else { 830 // This activity failed to schedule the 831 // pause, so just treat it as being paused now. 832 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 833 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 834 } 835 } 836 837 final void activityPausedLocked(IBinder token, boolean timeout) { 838 if (DEBUG_PAUSE) Slog.v( 839 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 840 841 final ActivityRecord r = isInStackLocked(token); 842 if (r != null) { 843 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 844 if (mPausingActivity == r) { 845 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 846 + (timeout ? " (due to timeout)" : " (pause complete)")); 847 r.state = ActivityState.PAUSED; 848 completePauseLocked(); 849 } else { 850 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 851 r.userId, System.identityHashCode(r), r.shortComponentName, 852 mPausingActivity != null 853 ? mPausingActivity.shortComponentName : "(none)"); 854 } 855 } 856 } 857 858 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 859 CharSequence description) { 860 if (r.state != ActivityState.STOPPING) { 861 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 862 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 863 return; 864 } 865 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 866 if (icicle != null) { 867 // If icicle is null, this is happening due to a timeout, so we 868 // haven't really saved the state. 869 r.icicle = icicle; 870 r.haveState = true; 871 r.launchCount = 0; 872 r.updateThumbnail(thumbnail, description); 873 } 874 if (!r.stopped) { 875 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 876 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 877 r.stopped = true; 878 r.state = ActivityState.STOPPED; 879 if (r.finishing) { 880 r.clearOptionsLocked(); 881 } else { 882 if (r.configDestroy) { 883 destroyActivityLocked(r, true, false, "stop-config"); 884 mStackSupervisor.resumeTopActivitiesLocked(); 885 } else { 886 mStackSupervisor.updatePreviousProcessLocked(r); 887 } 888 } 889 } 890 } 891 892 private void completePauseLocked() { 893 ActivityRecord prev = mPausingActivity; 894 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 895 896 if (prev != null) { 897 if (prev.finishing) { 898 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 899 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 900 } else if (prev.app != null) { 901 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 902 if (prev.waitingVisible) { 903 prev.waitingVisible = false; 904 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 905 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 906 TAG, "Complete pause, no longer waiting: " + prev); 907 } 908 if (prev.configDestroy) { 909 // The previous is being paused because the configuration 910 // is changing, which means it is actually stopping... 911 // To juggle the fact that we are also starting a new 912 // instance right now, we need to first completely stop 913 // the current instance before starting the new one. 914 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 915 destroyActivityLocked(prev, true, false, "pause-config"); 916 } else { 917 mStackSupervisor.mStoppingActivities.add(prev); 918 if (mStackSupervisor.mStoppingActivities.size() > 3 || 919 prev.frontOfTask && mTaskHistory.size() <= 1) { 920 // If we already have a few activities waiting to stop, 921 // then give up on things going idle and start clearing 922 // them out. Or if r is the last of activity of the last task the stack 923 // will be empty and must be cleared immediately. 924 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 925 mStackSupervisor.scheduleIdleLocked(); 926 } else { 927 mStackSupervisor.checkReadyForSleepLocked(); 928 } 929 } 930 } else { 931 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 932 prev = null; 933 } 934 mPausingActivity = null; 935 } 936 937 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 938 if (!mService.isSleepingOrShuttingDown()) { 939 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 940 } else { 941 mStackSupervisor.checkReadyForSleepLocked(); 942 ActivityRecord top = topStack.topRunningActivityLocked(null); 943 if (top == null || (prev != null && top != prev)) { 944 // If there are no more activities available to run, 945 // do resume anyway to start something. Also if the top 946 // activity on the stack is not the just paused activity, 947 // we need to go ahead and resume it to ensure we complete 948 // an in-flight app switch. 949 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 950 } 951 } 952 953 if (prev != null) { 954 prev.resumeKeyDispatchingLocked(); 955 956 if (prev.app != null && prev.cpuTimeAtResume > 0 957 && mService.mBatteryStatsService.isOnBattery()) { 958 long diff; 959 synchronized (mService.mProcessCpuThread) { 960 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 961 - prev.cpuTimeAtResume; 962 } 963 if (diff > 0) { 964 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 965 synchronized (bsi) { 966 BatteryStatsImpl.Uid.Proc ps = 967 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 968 prev.info.packageName); 969 if (ps != null) { 970 ps.addForegroundTimeLocked(diff); 971 } 972 } 973 } 974 } 975 prev.cpuTimeAtResume = 0; // reset it 976 } 977 } 978 979 /** 980 * Once we know that we have asked an application to put an activity in 981 * the resumed state (either by launching it or explicitly telling it), 982 * this function updates the rest of our state to match that fact. 983 */ 984 private void completeResumeLocked(ActivityRecord next) { 985 next.idle = false; 986 next.results = null; 987 next.newIntents = null; 988 if (next.nowVisible) { 989 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 990 mStackSupervisor.dismissKeyguard(); 991 } 992 993 // schedule an idle timeout in case the app doesn't do it for us. 994 mStackSupervisor.scheduleIdleTimeoutLocked(next); 995 996 mStackSupervisor.reportResumedActivityLocked(next); 997 998 next.resumeKeyDispatchingLocked(); 999 mNoAnimActivities.clear(); 1000 1001 // Mark the point when the activity is resuming 1002 // TODO: To be more accurate, the mark should be before the onCreate, 1003 // not after the onResume. But for subsequent starts, onResume is fine. 1004 if (next.app != null) { 1005 synchronized (mService.mProcessCpuThread) { 1006 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1007 } 1008 } else { 1009 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1010 } 1011 } 1012 1013 /** 1014 * Determine if home should be visible below the passed record. 1015 * @param record activity we are querying for. 1016 * @return true if home is visible below the passed activity, false otherwise. 1017 */ 1018 boolean isActivityOverHome(ActivityRecord record) { 1019 // Start at record and go down, look for either home or a visible fullscreen activity. 1020 final TaskRecord recordTask = record.task; 1021 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1022 TaskRecord task = mTaskHistory.get(taskNdx); 1023 final ArrayList<ActivityRecord> activities = task.mActivities; 1024 final int startNdx = 1025 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1026 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1027 final ActivityRecord r = activities.get(activityNdx); 1028 if (r.isHomeActivity()) { 1029 return true; 1030 } 1031 if (!r.finishing && r.fullscreen) { 1032 // Passed activity is over a fullscreen activity. 1033 return false; 1034 } 1035 } 1036 if (task.mOnTopOfHome) { 1037 // Got to the bottom of a task on top of home without finding a visible fullscreen 1038 // activity. Home is visible. 1039 return true; 1040 } 1041 } 1042 // Got to the bottom of this stack and still don't know. If this is over the home stack 1043 // then record is over home. May not work if we ever get more than two layers. 1044 return mStackSupervisor.isFrontStack(this); 1045 } 1046 1047 /** 1048 * Version of ensureActivitiesVisible that can easily be called anywhere. 1049 */ 1050 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1051 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1052 } 1053 1054 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1055 boolean forceHomeShown) { 1056 ActivityRecord r = topRunningActivityLocked(null); 1057 return r != null && 1058 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1059 } 1060 1061 /** 1062 * Make sure that all activities that need to be visible (that is, they 1063 * currently can be seen by the user) actually are. 1064 */ 1065 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1066 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1067 if (DEBUG_VISBILITY) Slog.v( 1068 TAG, "ensureActivitiesVisible behind " + top 1069 + " configChanges=0x" + Integer.toHexString(configChanges)); 1070 1071 if (mTranslucentActivityWaiting != top) { 1072 mUndrawnActivitiesBelowTopTranslucent.clear(); 1073 if (mTranslucentActivityWaiting != null) { 1074 // Call the callback with a timeout indication. 1075 notifyActivityDrawnLocked(null); 1076 mTranslucentActivityWaiting = null; 1077 } 1078 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1079 } 1080 1081 // If the top activity is not fullscreen, then we need to 1082 // make sure any activities under it are now visible. 1083 boolean aboveTop = true; 1084 boolean showHomeBehindStack = false; 1085 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1086 !(forceHomeShown && isHomeStack()); 1087 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1088 final TaskRecord task = mTaskHistory.get(taskNdx); 1089 final ArrayList<ActivityRecord> activities = task.mActivities; 1090 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1091 final ActivityRecord r = activities.get(activityNdx); 1092 if (r.finishing) { 1093 continue; 1094 } 1095 if (aboveTop && r != top) { 1096 continue; 1097 } 1098 aboveTop = false; 1099 if (!behindFullscreen) { 1100 if (DEBUG_VISBILITY) Slog.v( 1101 TAG, "Make visible? " + r + " finishing=" + r.finishing 1102 + " state=" + r.state); 1103 1104 final boolean doThisProcess = onlyThisProcess == null 1105 || onlyThisProcess.equals(r.processName); 1106 1107 // First: if this is not the current activity being started, make 1108 // sure it matches the current configuration. 1109 if (r != starting && doThisProcess) { 1110 ensureActivityConfigurationLocked(r, 0); 1111 } 1112 1113 if (r.app == null || r.app.thread == null) { 1114 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1115 // This activity needs to be visible, but isn't even 1116 // running... get it started, but don't resume it 1117 // at this point. 1118 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1119 if (r != starting) { 1120 r.startFreezingScreenLocked(r.app, configChanges); 1121 } 1122 if (!r.visible) { 1123 if (DEBUG_VISBILITY) Slog.v( 1124 TAG, "Starting and making visible: " + r); 1125 r.visible = true; 1126 mWindowManager.setAppVisibility(r.appToken, true); 1127 } 1128 if (r != starting) { 1129 mStackSupervisor.startSpecificActivityLocked(r, false, false, null); 1130 } 1131 } 1132 1133 } else if (r.visible) { 1134 // If this activity is already visible, then there is nothing 1135 // else to do here. 1136 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1137 r.stopFreezingScreenLocked(false); 1138 1139 } else if (onlyThisProcess == null) { 1140 // This activity is not currently visible, but is running. 1141 // Tell it to become visible. 1142 r.visible = true; 1143 if (r.state != ActivityState.RESUMED && r != starting) { 1144 // If this activity is paused, tell it 1145 // to now show its window. 1146 if (DEBUG_VISBILITY) Slog.v( 1147 TAG, "Making visible and scheduling visibility: " + r); 1148 try { 1149 if (mTranslucentActivityWaiting != null) { 1150 mUndrawnActivitiesBelowTopTranslucent.add(r); 1151 } 1152 mWindowManager.setAppVisibility(r.appToken, true); 1153 r.sleeping = false; 1154 r.app.pendingUiClean = true; 1155 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1156 r.stopFreezingScreenLocked(false); 1157 } catch (Exception e) { 1158 // Just skip on any failure; we'll make it 1159 // visible when it next restarts. 1160 Slog.w(TAG, "Exception thrown making visibile: " 1161 + r.intent.getComponent(), e); 1162 } 1163 } 1164 } 1165 1166 // Aggregate current change flags. 1167 configChanges |= r.configChangeFlags; 1168 1169 if (r.fullscreen) { 1170 // At this point, nothing else needs to be shown 1171 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1172 behindFullscreen = true; 1173 } else if (isActivityOverHome(r)) { 1174 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1175 showHomeBehindStack = true; 1176 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1177 } 1178 } else { 1179 if (DEBUG_VISBILITY) Slog.v( 1180 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1181 + " state=" + r.state 1182 + " behindFullscreen=" + behindFullscreen); 1183 // Now for any activities that aren't visible to the user, make 1184 // sure they no longer are keeping the screen frozen. 1185 if (r.visible) { 1186 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1187 r.visible = false; 1188 try { 1189 mWindowManager.setAppVisibility(r.appToken, false); 1190 switch (r.state) { 1191 case STOPPING: 1192 case STOPPED: 1193 if (r.app != null && r.app.thread != null) { 1194 if (DEBUG_VISBILITY) Slog.v( 1195 TAG, "Scheduling invisibility: " + r); 1196 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1197 } 1198 break; 1199 1200 case INITIALIZING: 1201 case RESUMED: 1202 case PAUSING: 1203 case PAUSED: 1204 // This case created for transitioning activities from 1205 // translucent to opaque {@link Activity#convertToOpaque}. 1206 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1207 mStackSupervisor.mStoppingActivities.add(r); 1208 } 1209 mStackSupervisor.scheduleIdleLocked(); 1210 break; 1211 1212 default: 1213 break; 1214 } 1215 } catch (Exception e) { 1216 // Just skip on any failure; we'll make it 1217 // visible when it next restarts. 1218 Slog.w(TAG, "Exception thrown making hidden: " 1219 + r.intent.getComponent(), e); 1220 } 1221 } else { 1222 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1223 } 1224 } 1225 } 1226 } 1227 return showHomeBehindStack; 1228 } 1229 1230 void convertToTranslucent(ActivityRecord r) { 1231 mTranslucentActivityWaiting = r; 1232 mUndrawnActivitiesBelowTopTranslucent.clear(); 1233 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1234 } 1235 1236 /** 1237 * Called as activities below the top translucent activity are redrawn. When the last one is 1238 * redrawn notify the top activity by calling 1239 * {@link Activity#onTranslucentConversionComplete}. 1240 * 1241 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1242 * occurred and the activity will be notified immediately. 1243 */ 1244 void notifyActivityDrawnLocked(ActivityRecord r) { 1245 if ((r == null) 1246 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1247 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1248 // The last undrawn activity below the top has just been drawn. If there is an 1249 // opaque activity at the top, notify it that it can become translucent safely now. 1250 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1251 mTranslucentActivityWaiting = null; 1252 mUndrawnActivitiesBelowTopTranslucent.clear(); 1253 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1254 1255 if (waitingActivity != null) { 1256 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1257 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1258 try { 1259 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1260 waitingActivity.appToken, r != null); 1261 } catch (RemoteException e) { 1262 } 1263 } 1264 } 1265 } 1266 } 1267 1268 /** If any activities below the top running one are in the INITIALIZING state and they have a 1269 * starting window displayed then remove that starting window. It is possible that the activity 1270 * in this state will never resumed in which case that starting window will be orphaned. */ 1271 void cancelInitializingActivities() { 1272 final ActivityRecord topActivity = topRunningActivityLocked(null); 1273 boolean aboveTop = true; 1274 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1275 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1276 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1277 final ActivityRecord r = activities.get(activityNdx); 1278 if (aboveTop) { 1279 if (r == topActivity) { 1280 aboveTop = false; 1281 } 1282 continue; 1283 } 1284 1285 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1286 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1287 r.mStartingWindowShown = false; 1288 mWindowManager.removeAppStartingWindow(r.appToken); 1289 } 1290 } 1291 } 1292 } 1293 1294 /** 1295 * Ensure that the top activity in the stack is resumed. 1296 * 1297 * @param prev The previously resumed activity, for when in the process 1298 * of pausing; can be null to call from elsewhere. 1299 * 1300 * @return Returns true if something is being resumed, or false if 1301 * nothing happened. 1302 */ 1303 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1304 return resumeTopActivityLocked(prev, null); 1305 } 1306 1307 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1308 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1309 1310 ActivityRecord parent = mActivityContainer.mParentActivity; 1311 if (parent != null && parent.state != ActivityState.RESUMED) { 1312 // Do not resume this stack if its parent is not resumed. 1313 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1314 return false; 1315 } 1316 1317 cancelInitializingActivities(); 1318 1319 // Find the first activity that is not finishing. 1320 ActivityRecord next = topRunningActivityLocked(null); 1321 1322 // Remember how we'll process this pause/resume situation, and ensure 1323 // that the state is reset however we wind up proceeding. 1324 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1325 mStackSupervisor.mUserLeaving = false; 1326 1327 if (next == null) { 1328 // There are no more activities! Let's just start up the 1329 // Launcher... 1330 ActivityOptions.abort(options); 1331 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1332 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1333 // Only resume home if on home display 1334 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1335 } 1336 1337 next.delayedResume = false; 1338 1339 // If the top activity is the resumed one, nothing to do. 1340 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1341 mStackSupervisor.allResumedActivitiesComplete()) { 1342 // Make sure we have executed any pending transitions, since there 1343 // should be nothing left to do at this point. 1344 mWindowManager.executeAppTransition(); 1345 mNoAnimActivities.clear(); 1346 ActivityOptions.abort(options); 1347 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1348 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1349 return false; 1350 } 1351 1352 final TaskRecord nextTask = next.task; 1353 final TaskRecord prevTask = prev != null ? prev.task : null; 1354 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1355 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1356 if (prevTask == nextTask) { 1357 prevTask.setFrontOfTask(); 1358 } else if (prevTask != topTask()) { 1359 // This task is going away but it was supposed to return to the home task. 1360 // Now the task above it has to return to the home task instead. 1361 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1362 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1363 } else { 1364 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1365 "resumeTopActivityLocked: Launching home next"); 1366 // Only resume home if on home display 1367 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1368 } 1369 } 1370 1371 // If we are sleeping, and there is no resumed activity, and the top 1372 // activity is paused, well that is the state we want. 1373 if (mService.isSleepingOrShuttingDown() 1374 && mLastPausedActivity == next 1375 && mStackSupervisor.allPausedActivitiesComplete()) { 1376 // Make sure we have executed any pending transitions, since there 1377 // should be nothing left to do at this point. 1378 mWindowManager.executeAppTransition(); 1379 mNoAnimActivities.clear(); 1380 ActivityOptions.abort(options); 1381 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1382 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1383 return false; 1384 } 1385 1386 // Make sure that the user who owns this activity is started. If not, 1387 // we will just leave it as is because someone should be bringing 1388 // another user's activities to the top of the stack. 1389 if (mService.mStartedUsers.get(next.userId) == null) { 1390 Slog.w(TAG, "Skipping resume of top activity " + next 1391 + ": user " + next.userId + " is stopped"); 1392 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1393 return false; 1394 } 1395 1396 // The activity may be waiting for stop, but that is no longer 1397 // appropriate for it. 1398 mStackSupervisor.mStoppingActivities.remove(next); 1399 mStackSupervisor.mGoingToSleepActivities.remove(next); 1400 next.sleeping = false; 1401 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1402 1403 next.updateOptionsLocked(options); 1404 1405 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1406 1407 // If we are currently pausing an activity, then don't do anything 1408 // until that is done. 1409 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1410 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1411 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1412 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1413 return false; 1414 } 1415 1416 // Okay we are now going to start a switch, to 'next'. We may first 1417 // have to pause the current activity, but this is an important point 1418 // where we have decided to go to 'next' so keep track of that. 1419 // XXX "App Redirected" dialog is getting too many false positives 1420 // at this point, so turn off for now. 1421 if (false) { 1422 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1423 long now = SystemClock.uptimeMillis(); 1424 final boolean inTime = mLastStartedActivity.startTime != 0 1425 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1426 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1427 final int nextUid = next.info.applicationInfo.uid; 1428 if (inTime && lastUid != nextUid 1429 && lastUid != next.launchedFromUid 1430 && mService.checkPermission( 1431 android.Manifest.permission.STOP_APP_SWITCHES, 1432 -1, next.launchedFromUid) 1433 != PackageManager.PERMISSION_GRANTED) { 1434 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1435 } else { 1436 next.startTime = now; 1437 mLastStartedActivity = next; 1438 } 1439 } else { 1440 next.startTime = SystemClock.uptimeMillis(); 1441 mLastStartedActivity = next; 1442 } 1443 } 1444 1445 // We need to start pausing the current activity so the top one 1446 // can be resumed... 1447 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1448 if (mResumedActivity != null) { 1449 pausing = true; 1450 startPausingLocked(userLeaving, false); 1451 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1452 } 1453 if (pausing) { 1454 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1455 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1456 // At this point we want to put the upcoming activity's process 1457 // at the top of the LRU list, since we know we will be needing it 1458 // very soon and it would be a waste to let it get killed if it 1459 // happens to be sitting towards the end. 1460 if (next.app != null && next.app.thread != null) { 1461 // No reason to do full oom adj update here; we'll let that 1462 // happen whenever it needs to later. 1463 mService.updateLruProcessLocked(next.app, true, null); 1464 } 1465 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1466 return true; 1467 } 1468 1469 // If the most recent activity was noHistory but was only stopped rather 1470 // than stopped+finished because the device went to sleep, we need to make 1471 // sure to finish it as we're making a new activity topmost. 1472 if (mService.mSleeping && mLastNoHistoryActivity != null && 1473 !mLastNoHistoryActivity.finishing) { 1474 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1475 " on new resume"); 1476 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1477 null, "no-history", false); 1478 mLastNoHistoryActivity = null; 1479 } 1480 1481 if (prev != null && prev != next) { 1482 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1483 prev.waitingVisible = true; 1484 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1485 if (DEBUG_SWITCH) Slog.v( 1486 TAG, "Resuming top, waiting visible to hide: " + prev); 1487 } else { 1488 // The next activity is already visible, so hide the previous 1489 // activity's windows right now so we can show the new one ASAP. 1490 // We only do this if the previous is finishing, which should mean 1491 // it is on top of the one being resumed so hiding it quickly 1492 // is good. Otherwise, we want to do the normal route of allowing 1493 // the resumed activity to be shown so we can decide if the 1494 // previous should actually be hidden depending on whether the 1495 // new one is found to be full-screen or not. 1496 if (prev.finishing) { 1497 mWindowManager.setAppVisibility(prev.appToken, false); 1498 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1499 + prev + ", waitingVisible=" 1500 + (prev != null ? prev.waitingVisible : null) 1501 + ", nowVisible=" + next.nowVisible); 1502 } else { 1503 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1504 + prev + ", waitingVisible=" 1505 + (prev != null ? prev.waitingVisible : null) 1506 + ", nowVisible=" + next.nowVisible); 1507 } 1508 } 1509 } 1510 1511 // Launching this app's activity, make sure the app is no longer 1512 // considered stopped. 1513 try { 1514 AppGlobals.getPackageManager().setPackageStoppedState( 1515 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1516 } catch (RemoteException e1) { 1517 } catch (IllegalArgumentException e) { 1518 Slog.w(TAG, "Failed trying to unstop package " 1519 + next.packageName + ": " + e); 1520 } 1521 1522 // We are starting up the next activity, so tell the window manager 1523 // that the previous one will be hidden soon. This way it can know 1524 // to ignore it when computing the desired screen orientation. 1525 boolean anim = true; 1526 if (prev != null) { 1527 if (prev.finishing) { 1528 if (DEBUG_TRANSITION) Slog.v(TAG, 1529 "Prepare close transition: prev=" + prev); 1530 if (mNoAnimActivities.contains(prev)) { 1531 anim = false; 1532 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1533 } else { 1534 mWindowManager.prepareAppTransition(prev.task == next.task 1535 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1536 : AppTransition.TRANSIT_TASK_CLOSE, false); 1537 } 1538 mWindowManager.setAppWillBeHidden(prev.appToken); 1539 mWindowManager.setAppVisibility(prev.appToken, false); 1540 } else { 1541 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1542 if (mNoAnimActivities.contains(next)) { 1543 anim = false; 1544 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1545 } else { 1546 mWindowManager.prepareAppTransition(prev.task == next.task 1547 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1548 : AppTransition.TRANSIT_TASK_OPEN, false); 1549 } 1550 } 1551 if (false) { 1552 mWindowManager.setAppWillBeHidden(prev.appToken); 1553 mWindowManager.setAppVisibility(prev.appToken, false); 1554 } 1555 } else { 1556 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1557 if (mNoAnimActivities.contains(next)) { 1558 anim = false; 1559 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1560 } else { 1561 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1562 } 1563 } 1564 1565 Bundle resumeAnimOptions = null; 1566 if (anim) { 1567 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1568 if (opts != null) { 1569 resumeAnimOptions = opts.toBundle(); 1570 } 1571 next.applyOptionsLocked(); 1572 } else { 1573 next.clearOptionsLocked(); 1574 } 1575 1576 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1577 if (next.app != null && next.app.thread != null) { 1578 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1579 1580 // This activity is now becoming visible. 1581 mWindowManager.setAppVisibility(next.appToken, true); 1582 1583 // schedule launch ticks to collect information about slow apps. 1584 next.startLaunchTickingLocked(); 1585 1586 ActivityRecord lastResumedActivity = 1587 lastStack == null ? null :lastStack.mResumedActivity; 1588 ActivityState lastState = next.state; 1589 1590 mService.updateCpuStats(); 1591 1592 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1593 next.state = ActivityState.RESUMED; 1594 mResumedActivity = next; 1595 next.task.touchActiveTime(); 1596 mService.addRecentTaskLocked(next.task); 1597 mService.updateLruProcessLocked(next.app, true, null); 1598 updateLRUListLocked(next); 1599 mService.updateOomAdjLocked(); 1600 1601 // Have the window manager re-evaluate the orientation of 1602 // the screen based on the new activity order. 1603 boolean notUpdated = true; 1604 if (mStackSupervisor.isFrontStack(this)) { 1605 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1606 mService.mConfiguration, 1607 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1608 if (config != null) { 1609 next.frozenBeforeDestroy = true; 1610 } 1611 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1612 } 1613 1614 if (notUpdated) { 1615 // The configuration update wasn't able to keep the existing 1616 // instance of the activity, and instead started a new one. 1617 // We should be all done, but let's just make sure our activity 1618 // is still at the top and schedule another run if something 1619 // weird happened. 1620 ActivityRecord nextNext = topRunningActivityLocked(null); 1621 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1622 "Activity config changed during resume: " + next 1623 + ", new next: " + nextNext); 1624 if (nextNext != next) { 1625 // Do over! 1626 mStackSupervisor.scheduleResumeTopActivities(); 1627 } 1628 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1629 mNoAnimActivities.clear(); 1630 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1631 return true; 1632 } 1633 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1634 return false; 1635 } 1636 1637 try { 1638 // Deliver all pending results. 1639 ArrayList<ResultInfo> a = next.results; 1640 if (a != null) { 1641 final int N = a.size(); 1642 if (!next.finishing && N > 0) { 1643 if (DEBUG_RESULTS) Slog.v( 1644 TAG, "Delivering results to " + next 1645 + ": " + a); 1646 next.app.thread.scheduleSendResult(next.appToken, a); 1647 } 1648 } 1649 1650 if (next.newIntents != null) { 1651 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1652 } 1653 1654 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1655 next.userId, System.identityHashCode(next), 1656 next.task.taskId, next.shortComponentName); 1657 1658 next.sleeping = false; 1659 mService.showAskCompatModeDialogLocked(next); 1660 next.app.pendingUiClean = true; 1661 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1662 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1663 mService.isNextTransitionForward(), resumeAnimOptions); 1664 1665 mStackSupervisor.checkReadyForSleepLocked(); 1666 1667 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1668 } catch (Exception e) { 1669 // Whoops, need to restart this activity! 1670 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1671 + lastState + ": " + next); 1672 next.state = lastState; 1673 if (lastStack != null) { 1674 lastStack.mResumedActivity = lastResumedActivity; 1675 } 1676 Slog.i(TAG, "Restarting because process died: " + next); 1677 if (!next.hasBeenLaunched) { 1678 next.hasBeenLaunched = true; 1679 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1680 mStackSupervisor.isFrontStack(lastStack)) { 1681 mWindowManager.setAppStartingWindow( 1682 next.appToken, next.packageName, next.theme, 1683 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1684 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1685 next.windowFlags, null, true); 1686 } 1687 mStackSupervisor.startSpecificActivityLocked(next, true, false, resumeAnimOptions); 1688 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1689 return true; 1690 } 1691 1692 // From this point on, if something goes wrong there is no way 1693 // to recover the activity. 1694 try { 1695 next.visible = true; 1696 completeResumeLocked(next); 1697 } catch (Exception e) { 1698 // If any exception gets thrown, toss away this 1699 // activity and try the next one. 1700 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1701 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1702 "resume-exception", true); 1703 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1704 return true; 1705 } 1706 next.stopped = false; 1707 1708 } else { 1709 // Whoops, need to restart this activity! 1710 if (!next.hasBeenLaunched) { 1711 next.hasBeenLaunched = true; 1712 } else { 1713 if (SHOW_APP_STARTING_PREVIEW) { 1714 mWindowManager.setAppStartingWindow( 1715 next.appToken, next.packageName, next.theme, 1716 mService.compatibilityInfoForPackageLocked( 1717 next.info.applicationInfo), 1718 next.nonLocalizedLabel, 1719 next.labelRes, next.icon, next.logo, next.windowFlags, 1720 null, true); 1721 } 1722 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1723 } 1724 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1725 mStackSupervisor.startSpecificActivityLocked(next, true, true, resumeAnimOptions); 1726 } 1727 1728 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1729 return true; 1730 } 1731 1732 private void insertTaskAtTop(TaskRecord task) { 1733 // If this is being moved to the top by another activity or being launched from the home 1734 // activity, set mOnTopOfHome accordingly. 1735 if (isOnHomeDisplay()) { 1736 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1737 final boolean fromHome = lastStack.isHomeStack(); 1738 if (!isHomeStack() && (fromHome || topTask() != task)) { 1739 task.mOnTopOfHome = fromHome; 1740 } 1741 } else { 1742 task.mOnTopOfHome = false; 1743 } 1744 1745 mTaskHistory.remove(task); 1746 // Now put task at top. 1747 int stackNdx = mTaskHistory.size(); 1748 if (!isRelatedToOrCurrentUserLocked(task.userId)) { 1749 // Put non-current user tasks below current user tasks. 1750 while (--stackNdx >= 0) { 1751 if (!isRelatedToOrCurrentUserLocked(mTaskHistory.get(stackNdx).userId)) { 1752 break; 1753 } 1754 } 1755 ++stackNdx; 1756 } 1757 mTaskHistory.add(stackNdx, task); 1758 } 1759 1760 final void startActivityLocked(ActivityRecord r, boolean newTask, 1761 boolean doResume, boolean keepCurTransition, Bundle options) { 1762 TaskRecord rTask = r.task; 1763 final int taskId = rTask.taskId; 1764 if (taskForIdLocked(taskId) == null || newTask) { 1765 // Last activity in task had been removed or ActivityManagerService is reusing task. 1766 // Insert or replace. 1767 // Might not even be in. 1768 insertTaskAtTop(rTask); 1769 mWindowManager.moveTaskToTop(taskId); 1770 } 1771 TaskRecord task = null; 1772 if (!newTask) { 1773 // If starting in an existing task, find where that is... 1774 boolean startIt = true; 1775 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1776 task = mTaskHistory.get(taskNdx); 1777 if (task == r.task) { 1778 // Here it is! Now, if this is not yet visible to the 1779 // user, then just add it without starting; it will 1780 // get started when the user navigates back to it. 1781 if (!startIt) { 1782 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1783 + task, new RuntimeException("here").fillInStackTrace()); 1784 task.addActivityToTop(r); 1785 r.putInHistory(); 1786 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1787 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1788 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1789 r.userId, r.info.configChanges); 1790 if (VALIDATE_TOKENS) { 1791 validateAppTokensLocked(); 1792 } 1793 ActivityOptions.abort(options); 1794 return; 1795 } 1796 break; 1797 } else if (task.numFullscreen > 0) { 1798 startIt = false; 1799 } 1800 } 1801 } 1802 1803 // Place a new activity at top of stack, so it is next to interact 1804 // with the user. 1805 1806 // If we are not placing the new activity frontmost, we do not want 1807 // to deliver the onUserLeaving callback to the actual frontmost 1808 // activity 1809 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1810 mStackSupervisor.mUserLeaving = false; 1811 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1812 "startActivity() behind front, mUserLeaving=false"); 1813 } 1814 1815 task = r.task; 1816 1817 // Slot the activity into the history stack and proceed 1818 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1819 new RuntimeException("here").fillInStackTrace()); 1820 task.addActivityToTop(r); 1821 task.setFrontOfTask(); 1822 1823 r.putInHistory(); 1824 if (!isHomeStack() || numActivities() > 0) { 1825 // We want to show the starting preview window if we are 1826 // switching to a new task, or the next activity's process is 1827 // not currently running. 1828 boolean showStartingIcon = newTask; 1829 ProcessRecord proc = r.app; 1830 if (proc == null) { 1831 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1832 } 1833 if (proc == null || proc.thread == null) { 1834 showStartingIcon = true; 1835 } 1836 if (DEBUG_TRANSITION) Slog.v(TAG, 1837 "Prepare open transition: starting " + r); 1838 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1839 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1840 mNoAnimActivities.add(r); 1841 } else { 1842 mWindowManager.prepareAppTransition(newTask 1843 ? AppTransition.TRANSIT_TASK_OPEN 1844 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1845 mNoAnimActivities.remove(r); 1846 } 1847 r.updateOptionsLocked(options); 1848 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1849 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1850 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1851 r.info.configChanges); 1852 boolean doShow = true; 1853 if (newTask) { 1854 // Even though this activity is starting fresh, we still need 1855 // to reset it to make sure we apply affinities to move any 1856 // existing activities from other tasks in to it. 1857 // If the caller has requested that the target task be 1858 // reset, then do so. 1859 if ((r.intent.getFlags() 1860 &Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1861 resetTaskIfNeededLocked(r, r); 1862 doShow = topRunningNonDelayedActivityLocked(null) == r; 1863 } 1864 } 1865 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1866 // Figure out if we are transitioning from another activity that is 1867 // "has the same starting icon" as the next one. This allows the 1868 // window manager to keep the previous window it had previously 1869 // created, if it still had one. 1870 ActivityRecord prev = mResumedActivity; 1871 if (prev != null) { 1872 // We don't want to reuse the previous starting preview if: 1873 // (1) The current activity is in a different task. 1874 if (prev.task != r.task) { 1875 prev = null; 1876 } 1877 // (2) The current activity is already displayed. 1878 else if (prev.nowVisible) { 1879 prev = null; 1880 } 1881 } 1882 mWindowManager.setAppStartingWindow( 1883 r.appToken, r.packageName, r.theme, 1884 mService.compatibilityInfoForPackageLocked( 1885 r.info.applicationInfo), r.nonLocalizedLabel, 1886 r.labelRes, r.icon, r.logo, r.windowFlags, 1887 prev != null ? prev.appToken : null, showStartingIcon); 1888 r.mStartingWindowShown = true; 1889 } 1890 } else { 1891 // If this is the first activity, don't do any fancy animations, 1892 // because there is nothing for it to animate on top of. 1893 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1894 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1895 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1896 r.info.configChanges); 1897 ActivityOptions.abort(options); 1898 } 1899 if (VALIDATE_TOKENS) { 1900 validateAppTokensLocked(); 1901 } 1902 1903 if (doResume) { 1904 mStackSupervisor.resumeTopActivitiesLocked(); 1905 } 1906 } 1907 1908 final void validateAppTokensLocked() { 1909 mValidateAppTokens.clear(); 1910 mValidateAppTokens.ensureCapacity(numActivities()); 1911 final int numTasks = mTaskHistory.size(); 1912 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1913 TaskRecord task = mTaskHistory.get(taskNdx); 1914 final ArrayList<ActivityRecord> activities = task.mActivities; 1915 if (activities.isEmpty()) { 1916 continue; 1917 } 1918 TaskGroup group = new TaskGroup(); 1919 group.taskId = task.taskId; 1920 mValidateAppTokens.add(group); 1921 final int numActivities = activities.size(); 1922 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1923 final ActivityRecord r = activities.get(activityNdx); 1924 group.tokens.add(r.appToken); 1925 } 1926 } 1927 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1928 } 1929 1930 /** 1931 * Perform a reset of the given task, if needed as part of launching it. 1932 * Returns the new HistoryRecord at the top of the task. 1933 */ 1934 /** 1935 * Helper method for #resetTaskIfNeededLocked. 1936 * We are inside of the task being reset... we'll either finish this activity, push it out 1937 * for another task, or leave it as-is. 1938 * @param task The task containing the Activity (taskTop) that might be reset. 1939 * @param forceReset 1940 * @return An ActivityOptions that needs to be processed. 1941 */ 1942 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1943 ActivityOptions topOptions = null; 1944 1945 int replyChainEnd = -1; 1946 boolean canMoveOptions = true; 1947 1948 // We only do this for activities that are not the root of the task (since if we finish 1949 // the root, we may no longer have the task!). 1950 final ArrayList<ActivityRecord> activities = task.mActivities; 1951 final int numActivities = activities.size(); 1952 for (int i = numActivities - 1; i > 0; --i ) { 1953 ActivityRecord target = activities.get(i); 1954 1955 final int flags = target.info.flags; 1956 final boolean finishOnTaskLaunch = 1957 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1958 final boolean allowTaskReparenting = 1959 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1960 final boolean clearWhenTaskReset = 1961 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 1962 1963 if (!finishOnTaskLaunch 1964 && !clearWhenTaskReset 1965 && target.resultTo != null) { 1966 // If this activity is sending a reply to a previous 1967 // activity, we can't do anything with it now until 1968 // we reach the start of the reply chain. 1969 // XXX note that we are assuming the result is always 1970 // to the previous activity, which is almost always 1971 // the case but we really shouldn't count on. 1972 if (replyChainEnd < 0) { 1973 replyChainEnd = i; 1974 } 1975 } else if (!finishOnTaskLaunch 1976 && !clearWhenTaskReset 1977 && allowTaskReparenting 1978 && target.taskAffinity != null 1979 && !target.taskAffinity.equals(task.affinity)) { 1980 // If this activity has an affinity for another 1981 // task, then we need to move it out of here. We will 1982 // move it as far out of the way as possible, to the 1983 // bottom of the activity stack. This also keeps it 1984 // correctly ordered with any activities we previously 1985 // moved. 1986 final ThumbnailHolder newThumbHolder; 1987 final TaskRecord targetTask; 1988 final ActivityRecord bottom = 1989 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 1990 mTaskHistory.get(0).mActivities.get(0) : null; 1991 if (bottom != null && target.taskAffinity != null 1992 && target.taskAffinity.equals(bottom.task.affinity)) { 1993 // If the activity currently at the bottom has the 1994 // same task affinity as the one we are moving, 1995 // then merge it into the same task. 1996 targetTask = bottom.task; 1997 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 1998 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1999 + " out to bottom task " + bottom.task); 2000 } else { 2001 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2002 null, false); 2003 newThumbHolder = targetTask; 2004 targetTask.affinityIntent = target.intent; 2005 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2006 + " out to new task " + target.task); 2007 } 2008 2009 if (clearWhenTaskReset) { 2010 // This is the start of a new sub-task. 2011 if (target.thumbHolder == null) { 2012 target.thumbHolder = new ThumbnailHolder(); 2013 } 2014 } else { 2015 target.thumbHolder = newThumbHolder; 2016 } 2017 2018 final int targetTaskId = targetTask.taskId; 2019 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2020 2021 boolean noOptions = canMoveOptions; 2022 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2023 for (int srcPos = start; srcPos >= i; --srcPos) { 2024 final ActivityRecord p = activities.get(srcPos); 2025 if (p.finishing) { 2026 continue; 2027 } 2028 2029 ThumbnailHolder curThumbHolder = p.thumbHolder; 2030 canMoveOptions = false; 2031 if (noOptions && topOptions == null) { 2032 topOptions = p.takeOptionsLocked(); 2033 if (topOptions != null) { 2034 noOptions = false; 2035 } 2036 } 2037 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2038 + task + " adding to task=" + targetTask 2039 + " Callers=" + Debug.getCallers(4)); 2040 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2041 + " out to target's task " + target.task); 2042 p.setTask(targetTask, curThumbHolder, false); 2043 targetTask.addActivityAtBottom(p); 2044 2045 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2046 } 2047 2048 mWindowManager.moveTaskToBottom(targetTaskId); 2049 if (VALIDATE_TOKENS) { 2050 validateAppTokensLocked(); 2051 } 2052 2053 replyChainEnd = -1; 2054 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2055 // If the activity should just be removed -- either 2056 // because it asks for it, or the task should be 2057 // cleared -- then finish it and anything that is 2058 // part of its reply chain. 2059 int end; 2060 if (clearWhenTaskReset) { 2061 // In this case, we want to finish this activity 2062 // and everything above it, so be sneaky and pretend 2063 // like these are all in the reply chain. 2064 end = numActivities - 1; 2065 } else if (replyChainEnd < 0) { 2066 end = i; 2067 } else { 2068 end = replyChainEnd; 2069 } 2070 boolean noOptions = canMoveOptions; 2071 for (int srcPos = i; srcPos <= end; srcPos++) { 2072 ActivityRecord p = activities.get(srcPos); 2073 if (p.finishing) { 2074 continue; 2075 } 2076 canMoveOptions = false; 2077 if (noOptions && topOptions == null) { 2078 topOptions = p.takeOptionsLocked(); 2079 if (topOptions != null) { 2080 noOptions = false; 2081 } 2082 } 2083 if (DEBUG_TASKS) Slog.w(TAG, 2084 "resetTaskIntendedTask: calling finishActivity on " + p); 2085 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2086 end--; 2087 srcPos--; 2088 } 2089 } 2090 replyChainEnd = -1; 2091 } else { 2092 // If we were in the middle of a chain, well the 2093 // activity that started it all doesn't want anything 2094 // special, so leave it all as-is. 2095 replyChainEnd = -1; 2096 } 2097 } 2098 2099 return topOptions; 2100 } 2101 2102 /** 2103 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2104 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2105 * @param affinityTask The task we are looking for an affinity to. 2106 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2107 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2108 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2109 */ 2110 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2111 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2112 int replyChainEnd = -1; 2113 final int taskId = task.taskId; 2114 final String taskAffinity = task.affinity; 2115 2116 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2117 final int numActivities = activities.size(); 2118 // Do not operate on the root Activity. 2119 for (int i = numActivities - 1; i > 0; --i) { 2120 ActivityRecord target = activities.get(i); 2121 2122 final int flags = target.info.flags; 2123 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2124 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2125 2126 if (target.resultTo != null) { 2127 // If this activity is sending a reply to a previous 2128 // activity, we can't do anything with it now until 2129 // we reach the start of the reply chain. 2130 // XXX note that we are assuming the result is always 2131 // to the previous activity, which is almost always 2132 // the case but we really shouldn't count on. 2133 if (replyChainEnd < 0) { 2134 replyChainEnd = i; 2135 } 2136 } else if (topTaskIsHigher 2137 && allowTaskReparenting 2138 && taskAffinity != null 2139 && taskAffinity.equals(target.taskAffinity)) { 2140 // This activity has an affinity for our task. Either remove it if we are 2141 // clearing or move it over to our task. Note that 2142 // we currently punt on the case where we are resetting a 2143 // task that is not at the top but who has activities above 2144 // with an affinity to it... this is really not a normal 2145 // case, and we will need to later pull that task to the front 2146 // and usually at that point we will do the reset and pick 2147 // up those remaining activities. (This only happens if 2148 // someone starts an activity in a new task from an activity 2149 // in a task that is not currently on top.) 2150 if (forceReset || finishOnTaskLaunch) { 2151 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2152 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2153 for (int srcPos = start; srcPos >= i; --srcPos) { 2154 final ActivityRecord p = activities.get(srcPos); 2155 if (p.finishing) { 2156 continue; 2157 } 2158 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2159 } 2160 } else { 2161 if (taskInsertionPoint < 0) { 2162 taskInsertionPoint = task.mActivities.size(); 2163 2164 } 2165 2166 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2167 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2168 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2169 for (int srcPos = start; srcPos >= i; --srcPos) { 2170 final ActivityRecord p = activities.get(srcPos); 2171 p.setTask(task, null, false); 2172 task.addActivityAtIndex(taskInsertionPoint, p); 2173 2174 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2175 + " to stack at " + task, 2176 new RuntimeException("here").fillInStackTrace()); 2177 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2178 + " in to resetting task " + task); 2179 mWindowManager.setAppGroupId(p.appToken, taskId); 2180 } 2181 mWindowManager.moveTaskToTop(taskId); 2182 if (VALIDATE_TOKENS) { 2183 validateAppTokensLocked(); 2184 } 2185 2186 // Now we've moved it in to place... but what if this is 2187 // a singleTop activity and we have put it on top of another 2188 // instance of the same activity? Then we drop the instance 2189 // below so it remains singleTop. 2190 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2191 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2192 int targetNdx = taskActivities.indexOf(target); 2193 if (targetNdx > 0) { 2194 ActivityRecord p = taskActivities.get(targetNdx - 1); 2195 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2196 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2197 false); 2198 } 2199 } 2200 } 2201 } 2202 2203 replyChainEnd = -1; 2204 } 2205 } 2206 return taskInsertionPoint; 2207 } 2208 2209 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2210 ActivityRecord newActivity) { 2211 boolean forceReset = 2212 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2213 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2214 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2215 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2216 forceReset = true; 2217 } 2218 } 2219 2220 final TaskRecord task = taskTop.task; 2221 2222 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2223 * for remaining tasks. Used for later tasks to reparent to task. */ 2224 boolean taskFound = false; 2225 2226 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2227 ActivityOptions topOptions = null; 2228 2229 // Preserve the location for reparenting in the new task. 2230 int reparentInsertionPoint = -1; 2231 2232 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2233 final TaskRecord targetTask = mTaskHistory.get(i); 2234 2235 if (targetTask == task) { 2236 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2237 taskFound = true; 2238 } else { 2239 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2240 taskFound, forceReset, reparentInsertionPoint); 2241 } 2242 } 2243 2244 int taskNdx = mTaskHistory.indexOf(task); 2245 do { 2246 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2247 } while (taskTop == null && taskNdx >= 0); 2248 2249 if (topOptions != null) { 2250 // If we got some ActivityOptions from an activity on top that 2251 // was removed from the task, propagate them to the new real top. 2252 if (taskTop != null) { 2253 taskTop.updateOptionsLocked(topOptions); 2254 } else { 2255 topOptions.abort(); 2256 } 2257 } 2258 2259 return taskTop; 2260 } 2261 2262 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2263 String resultWho, int requestCode, int resultCode, Intent data) { 2264 2265 if (callingUid > 0) { 2266 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2267 data, r.getUriPermissionsLocked()); 2268 } 2269 2270 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2271 + " : who=" + resultWho + " req=" + requestCode 2272 + " res=" + resultCode + " data=" + data); 2273 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2274 try { 2275 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2276 list.add(new ResultInfo(resultWho, requestCode, 2277 resultCode, data)); 2278 r.app.thread.scheduleSendResult(r.appToken, list); 2279 return; 2280 } catch (Exception e) { 2281 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2282 } 2283 } 2284 2285 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2286 } 2287 2288 private void adjustFocusedActivityLocked(ActivityRecord r) { 2289 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2290 ActivityRecord next = topRunningActivityLocked(null); 2291 if (next != r) { 2292 final TaskRecord task = r.task; 2293 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2294 mStackSupervisor.moveHomeToTop(); 2295 } 2296 } 2297 mService.setFocusedActivityLocked(mStackSupervisor.topRunningActivityLocked()); 2298 } 2299 } 2300 2301 final void stopActivityLocked(ActivityRecord r) { 2302 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2303 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2304 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2305 if (!r.finishing) { 2306 if (!mService.mSleeping) { 2307 if (DEBUG_STATES) { 2308 Slog.d(TAG, "no-history finish of " + r); 2309 } 2310 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2311 "no-history", false); 2312 } else { 2313 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2314 + " on stop because we're just sleeping"); 2315 } 2316 } 2317 } 2318 2319 if (r.app != null && r.app.thread != null) { 2320 adjustFocusedActivityLocked(r); 2321 r.resumeKeyDispatchingLocked(); 2322 try { 2323 r.stopped = false; 2324 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2325 + " (stop requested)"); 2326 r.state = ActivityState.STOPPING; 2327 if (DEBUG_VISBILITY) Slog.v( 2328 TAG, "Stopping visible=" + r.visible + " for " + r); 2329 if (!r.visible) { 2330 mWindowManager.setAppVisibility(r.appToken, false); 2331 } 2332 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2333 if (mService.isSleepingOrShuttingDown()) { 2334 r.setSleeping(true); 2335 } 2336 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2337 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2338 } catch (Exception e) { 2339 // Maybe just ignore exceptions here... if the process 2340 // has crashed, our death notification will clean things 2341 // up. 2342 Slog.w(TAG, "Exception thrown during pause", e); 2343 // Just in case, assume it to be stopped. 2344 r.stopped = true; 2345 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2346 r.state = ActivityState.STOPPED; 2347 if (r.configDestroy) { 2348 destroyActivityLocked(r, true, false, "stop-except"); 2349 } 2350 } 2351 } 2352 } 2353 2354 /** 2355 * @return Returns true if the activity is being finished, false if for 2356 * some reason it is being left as-is. 2357 */ 2358 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2359 Intent resultData, String reason, boolean oomAdj) { 2360 ActivityRecord r = isInStackLocked(token); 2361 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2362 TAG, "Finishing activity token=" + token + " r=" 2363 + ", result=" + resultCode + ", data=" + resultData 2364 + ", reason=" + reason); 2365 if (r == null) { 2366 return false; 2367 } 2368 2369 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2370 return true; 2371 } 2372 2373 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2374 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2375 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2376 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2377 ActivityRecord r = activities.get(activityNdx); 2378 if (r.resultTo == self && r.requestCode == requestCode) { 2379 if ((r.resultWho == null && resultWho == null) || 2380 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2381 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2382 false); 2383 } 2384 } 2385 } 2386 } 2387 mService.updateOomAdjLocked(); 2388 } 2389 2390 final void finishTopRunningActivityLocked(ProcessRecord app) { 2391 ActivityRecord r = topRunningActivityLocked(null); 2392 if (r != null && r.app == app) { 2393 // If the top running activity is from this crashing 2394 // process, then terminate it to avoid getting in a loop. 2395 Slog.w(TAG, " Force finishing activity " 2396 + r.intent.getComponent().flattenToShortString()); 2397 int taskNdx = mTaskHistory.indexOf(r.task); 2398 int activityNdx = r.task.mActivities.indexOf(r); 2399 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2400 // Also terminate any activities below it that aren't yet 2401 // stopped, to avoid a situation where one will get 2402 // re-start our crashing activity once it gets resumed again. 2403 --activityNdx; 2404 if (activityNdx < 0) { 2405 do { 2406 --taskNdx; 2407 if (taskNdx < 0) { 2408 break; 2409 } 2410 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2411 } while (activityNdx < 0); 2412 } 2413 if (activityNdx >= 0) { 2414 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2415 if (r.state == ActivityState.RESUMED 2416 || r.state == ActivityState.PAUSING 2417 || r.state == ActivityState.PAUSED) { 2418 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2419 Slog.w(TAG, " Force finishing activity " 2420 + r.intent.getComponent().flattenToShortString()); 2421 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2422 } 2423 } 2424 } 2425 } 2426 } 2427 2428 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2429 ArrayList<ActivityRecord> activities = r.task.mActivities; 2430 for (int index = activities.indexOf(r); index >= 0; --index) { 2431 ActivityRecord cur = activities.get(index); 2432 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2433 break; 2434 } 2435 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2436 } 2437 return true; 2438 } 2439 2440 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2441 // send the result 2442 ActivityRecord resultTo = r.resultTo; 2443 if (resultTo != null) { 2444 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2445 + " who=" + r.resultWho + " req=" + r.requestCode 2446 + " res=" + resultCode + " data=" + resultData); 2447 if (r.info.applicationInfo.uid > 0) { 2448 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2449 resultTo.packageName, resultData, 2450 resultTo.getUriPermissionsLocked()); 2451 } 2452 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2453 resultData); 2454 r.resultTo = null; 2455 } 2456 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2457 2458 // Make sure this HistoryRecord is not holding on to other resources, 2459 // because clients have remote IPC references to this object so we 2460 // can't assume that will go away and want to avoid circular IPC refs. 2461 r.results = null; 2462 r.pendingResults = null; 2463 r.newIntents = null; 2464 r.icicle = null; 2465 } 2466 2467 /** 2468 * @return Returns true if this activity has been removed from the history 2469 * list, or false if it is still in the list and will be removed later. 2470 */ 2471 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2472 String reason, boolean oomAdj) { 2473 if (r.finishing) { 2474 Slog.w(TAG, "Duplicate finish request for " + r); 2475 return false; 2476 } 2477 2478 r.makeFinishing(); 2479 final TaskRecord task = r.task; 2480 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2481 r.userId, System.identityHashCode(r), 2482 task.taskId, r.shortComponentName, reason); 2483 final ArrayList<ActivityRecord> activities = task.mActivities; 2484 final int index = activities.indexOf(r); 2485 if (index < (activities.size() - 1)) { 2486 task.setFrontOfTask(); 2487 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2488 // If the caller asked that this activity (and all above it) 2489 // be cleared when the task is reset, don't lose that information, 2490 // but propagate it up to the next activity. 2491 ActivityRecord next = activities.get(index+1); 2492 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2493 } 2494 } 2495 2496 r.pauseKeyDispatchingLocked(); 2497 2498 adjustFocusedActivityLocked(r); 2499 2500 finishActivityResultsLocked(r, resultCode, resultData); 2501 2502 if (!mService.mPendingThumbnails.isEmpty()) { 2503 // There are clients waiting to receive thumbnails so, in case 2504 // this is an activity that someone is waiting for, add it 2505 // to the pending list so we can correctly update the clients. 2506 mStackSupervisor.mCancelledThumbnails.add(r); 2507 } 2508 2509 if (mResumedActivity == r) { 2510 boolean endTask = index <= 0; 2511 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2512 "Prepare close transition: finishing " + r); 2513 mWindowManager.prepareAppTransition(endTask 2514 ? AppTransition.TRANSIT_TASK_CLOSE 2515 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2516 2517 // Tell window manager to prepare for this one to be removed. 2518 mWindowManager.setAppVisibility(r.appToken, false); 2519 2520 if (mPausingActivity == null) { 2521 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2522 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2523 startPausingLocked(false, false); 2524 } 2525 2526 if (endTask) { 2527 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2528 } 2529 } else if (r.state != ActivityState.PAUSING) { 2530 // If the activity is PAUSING, we will complete the finish once 2531 // it is done pausing; else we can just directly finish it here. 2532 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2533 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2534 } else { 2535 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2536 } 2537 2538 return false; 2539 } 2540 2541 static final int FINISH_IMMEDIATELY = 0; 2542 static final int FINISH_AFTER_PAUSE = 1; 2543 static final int FINISH_AFTER_VISIBLE = 2; 2544 2545 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2546 // First things first: if this activity is currently visible, 2547 // and the resumed activity is not yet visible, then hold off on 2548 // finishing until the resumed one becomes visible. 2549 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2550 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2551 mStackSupervisor.mStoppingActivities.add(r); 2552 if (mStackSupervisor.mStoppingActivities.size() > 3 2553 || r.frontOfTask && mTaskHistory.size() <= 1) { 2554 // If we already have a few activities waiting to stop, 2555 // then give up on things going idle and start clearing 2556 // them out. Or if r is the last of activity of the last task the stack 2557 // will be empty and must be cleared immediately. 2558 mStackSupervisor.scheduleIdleLocked(); 2559 } else { 2560 mStackSupervisor.checkReadyForSleepLocked(); 2561 } 2562 } 2563 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2564 + " (finish requested)"); 2565 r.state = ActivityState.STOPPING; 2566 if (oomAdj) { 2567 mService.updateOomAdjLocked(); 2568 } 2569 return r; 2570 } 2571 2572 // make sure the record is cleaned out of other places. 2573 mStackSupervisor.mStoppingActivities.remove(r); 2574 mStackSupervisor.mGoingToSleepActivities.remove(r); 2575 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2576 if (mResumedActivity == r) { 2577 mResumedActivity = null; 2578 } 2579 final ActivityState prevState = r.state; 2580 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2581 r.state = ActivityState.FINISHING; 2582 2583 if (mode == FINISH_IMMEDIATELY 2584 || prevState == ActivityState.STOPPED 2585 || prevState == ActivityState.INITIALIZING) { 2586 // If this activity is already stopped, we can just finish 2587 // it right now. 2588 boolean activityRemoved = destroyActivityLocked(r, true, 2589 oomAdj, "finish-imm"); 2590 if (activityRemoved) { 2591 mStackSupervisor.resumeTopActivitiesLocked(); 2592 } 2593 return activityRemoved ? null : r; 2594 } 2595 2596 // Need to go through the full pause cycle to get this 2597 // activity into the stopped state and then finish it. 2598 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2599 mStackSupervisor.mFinishingActivities.add(r); 2600 r.resumeKeyDispatchingLocked(); 2601 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2602 return r; 2603 } 2604 2605 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2606 Intent resultData) { 2607 final ActivityRecord srec = ActivityRecord.forToken(token); 2608 final TaskRecord task = srec.task; 2609 final ArrayList<ActivityRecord> activities = task.mActivities; 2610 final int start = activities.indexOf(srec); 2611 if (!mTaskHistory.contains(task) || (start < 0)) { 2612 return false; 2613 } 2614 int finishTo = start - 1; 2615 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2616 boolean foundParentInTask = false; 2617 final ComponentName dest = destIntent.getComponent(); 2618 if (start > 0 && dest != null) { 2619 for (int i = finishTo; i >= 0; i--) { 2620 ActivityRecord r = activities.get(i); 2621 if (r.info.packageName.equals(dest.getPackageName()) && 2622 r.info.name.equals(dest.getClassName())) { 2623 finishTo = i; 2624 parent = r; 2625 foundParentInTask = true; 2626 break; 2627 } 2628 } 2629 } 2630 2631 IActivityController controller = mService.mController; 2632 if (controller != null) { 2633 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2634 if (next != null) { 2635 // ask watcher if this is allowed 2636 boolean resumeOK = true; 2637 try { 2638 resumeOK = controller.activityResuming(next.packageName); 2639 } catch (RemoteException e) { 2640 mService.mController = null; 2641 Watchdog.getInstance().setActivityController(null); 2642 } 2643 2644 if (!resumeOK) { 2645 return false; 2646 } 2647 } 2648 } 2649 final long origId = Binder.clearCallingIdentity(); 2650 for (int i = start; i > finishTo; i--) { 2651 ActivityRecord r = activities.get(i); 2652 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2653 // Only return the supplied result for the first activity finished 2654 resultCode = Activity.RESULT_CANCELED; 2655 resultData = null; 2656 } 2657 2658 if (parent != null && foundParentInTask) { 2659 final int parentLaunchMode = parent.info.launchMode; 2660 final int destIntentFlags = destIntent.getFlags(); 2661 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2662 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2663 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2664 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2665 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2666 } else { 2667 try { 2668 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2669 destIntent.getComponent(), 0, srec.userId); 2670 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2671 null, aInfo, parent.appToken, null, 2672 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2673 0, null, true, null, null); 2674 foundParentInTask = res == ActivityManager.START_SUCCESS; 2675 } catch (RemoteException e) { 2676 foundParentInTask = false; 2677 } 2678 requestFinishActivityLocked(parent.appToken, resultCode, 2679 resultData, "navigate-up", true); 2680 } 2681 } 2682 Binder.restoreCallingIdentity(origId); 2683 return foundParentInTask; 2684 } 2685 /** 2686 * Perform the common clean-up of an activity record. This is called both 2687 * as part of destroyActivityLocked() (when destroying the client-side 2688 * representation) and cleaning things up as a result of its hosting 2689 * processing going away, in which case there is no remaining client-side 2690 * state to destroy so only the cleanup here is needed. 2691 */ 2692 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2693 boolean setState) { 2694 if (mResumedActivity == r) { 2695 mResumedActivity = null; 2696 } 2697 if (mService.mFocusedActivity == r) { 2698 mService.mFocusedActivity = null; 2699 } 2700 2701 r.configDestroy = false; 2702 r.frozenBeforeDestroy = false; 2703 2704 if (setState) { 2705 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2706 r.state = ActivityState.DESTROYED; 2707 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2708 r.app = null; 2709 } 2710 2711 // Make sure this record is no longer in the pending finishes list. 2712 // This could happen, for example, if we are trimming activities 2713 // down to the max limit while they are still waiting to finish. 2714 mStackSupervisor.mFinishingActivities.remove(r); 2715 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2716 2717 // Remove any pending results. 2718 if (r.finishing && r.pendingResults != null) { 2719 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2720 PendingIntentRecord rec = apr.get(); 2721 if (rec != null) { 2722 mService.cancelIntentSenderLocked(rec, false); 2723 } 2724 } 2725 r.pendingResults = null; 2726 } 2727 2728 if (cleanServices) { 2729 cleanUpActivityServicesLocked(r); 2730 } 2731 2732 if (!mService.mPendingThumbnails.isEmpty()) { 2733 // There are clients waiting to receive thumbnails so, in case 2734 // this is an activity that someone is waiting for, add it 2735 // to the pending list so we can correctly update the clients. 2736 mStackSupervisor.mCancelledThumbnails.add(r); 2737 } 2738 2739 // Get rid of any pending idle timeouts. 2740 removeTimeoutsForActivityLocked(r); 2741 } 2742 2743 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2744 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2745 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2746 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2747 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2748 r.finishLaunchTickingLocked(); 2749 } 2750 2751 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2752 mStackSupervisor.removeChildActivityContainers(r); 2753 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2754 r.makeFinishing(); 2755 if (DEBUG_ADD_REMOVE) { 2756 RuntimeException here = new RuntimeException("here"); 2757 here.fillInStackTrace(); 2758 Slog.i(TAG, "Removing activity " + r + " from stack"); 2759 } 2760 r.takeFromHistory(); 2761 removeTimeoutsForActivityLocked(r); 2762 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2763 r.state = ActivityState.DESTROYED; 2764 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2765 r.app = null; 2766 mWindowManager.removeAppToken(r.appToken); 2767 if (VALIDATE_TOKENS) { 2768 validateAppTokensLocked(); 2769 } 2770 final TaskRecord task = r.task; 2771 if (task != null && task.removeActivity(r)) { 2772 if (DEBUG_STACK) Slog.i(TAG, 2773 "removeActivityFromHistoryLocked: last activity removed from " + this); 2774 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2775 mStackSupervisor.moveHomeToTop(); 2776 } 2777 removeTask(task); 2778 } 2779 cleanUpActivityServicesLocked(r); 2780 r.removeUriPermissionsLocked(); 2781 } 2782 2783 /** 2784 * Perform clean-up of service connections in an activity record. 2785 */ 2786 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2787 // Throw away any services that have been bound by this activity. 2788 if (r.connections != null) { 2789 Iterator<ConnectionRecord> it = r.connections.iterator(); 2790 while (it.hasNext()) { 2791 ConnectionRecord c = it.next(); 2792 mService.mServices.removeConnectionLocked(c, null, r); 2793 } 2794 r.connections = null; 2795 } 2796 } 2797 2798 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2799 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2800 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2801 mHandler.sendMessage(msg); 2802 } 2803 2804 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2805 boolean lastIsOpaque = false; 2806 boolean activityRemoved = false; 2807 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2808 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2809 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2810 final ActivityRecord r = activities.get(activityNdx); 2811 if (r.finishing) { 2812 continue; 2813 } 2814 if (r.fullscreen) { 2815 lastIsOpaque = true; 2816 } 2817 if (owner != null && r.app != owner) { 2818 continue; 2819 } 2820 if (!lastIsOpaque) { 2821 continue; 2822 } 2823 // We can destroy this one if we have its icicle saved and 2824 // it is not in the process of pausing/stopping/finishing. 2825 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2826 && r.haveState && !r.visible && r.stopped 2827 && r.state != ActivityState.DESTROYING 2828 && r.state != ActivityState.DESTROYED) { 2829 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2830 + " resumed=" + mResumedActivity 2831 + " pausing=" + mPausingActivity); 2832 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2833 activityRemoved = true; 2834 } 2835 } 2836 } 2837 } 2838 if (activityRemoved) { 2839 mStackSupervisor.resumeTopActivitiesLocked(); 2840 2841 } 2842 } 2843 2844 /** 2845 * Destroy the current CLIENT SIDE instance of an activity. This may be 2846 * called both when actually finishing an activity, or when performing 2847 * a configuration switch where we destroy the current client-side object 2848 * but then create a new client-side object for this same HistoryRecord. 2849 */ 2850 final boolean destroyActivityLocked(ActivityRecord r, 2851 boolean removeFromApp, boolean oomAdj, String reason) { 2852 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2853 TAG, "Removing activity from " + reason + ": token=" + r 2854 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2855 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2856 r.userId, System.identityHashCode(r), 2857 r.task.taskId, r.shortComponentName, reason); 2858 2859 boolean removedFromHistory = false; 2860 2861 cleanUpActivityLocked(r, false, false); 2862 2863 final boolean hadApp = r.app != null; 2864 2865 if (hadApp) { 2866 if (removeFromApp) { 2867 r.app.activities.remove(r); 2868 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2869 mService.mHeavyWeightProcess = null; 2870 mService.mHandler.sendEmptyMessage( 2871 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2872 } 2873 if (r.app.activities.isEmpty()) { 2874 // No longer have activities, so update LRU list and oom adj. 2875 mService.updateLruProcessLocked(r.app, false, null); 2876 mService.updateOomAdjLocked(); 2877 } 2878 } 2879 2880 boolean skipDestroy = false; 2881 2882 try { 2883 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2884 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2885 r.configChangeFlags); 2886 } catch (Exception e) { 2887 // We can just ignore exceptions here... if the process 2888 // has crashed, our death notification will clean things 2889 // up. 2890 //Slog.w(TAG, "Exception thrown during finish", e); 2891 if (r.finishing) { 2892 removeActivityFromHistoryLocked(r); 2893 removedFromHistory = true; 2894 skipDestroy = true; 2895 } 2896 } 2897 2898 r.nowVisible = false; 2899 2900 // If the activity is finishing, we need to wait on removing it 2901 // from the list to give it a chance to do its cleanup. During 2902 // that time it may make calls back with its token so we need to 2903 // be able to find it on the list and so we don't want to remove 2904 // it from the list yet. Otherwise, we can just immediately put 2905 // it in the destroyed state since we are not removing it from the 2906 // list. 2907 if (r.finishing && !skipDestroy) { 2908 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2909 + " (destroy requested)"); 2910 r.state = ActivityState.DESTROYING; 2911 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2912 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2913 } else { 2914 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2915 r.state = ActivityState.DESTROYED; 2916 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2917 r.app = null; 2918 } 2919 } else { 2920 // remove this record from the history. 2921 if (r.finishing) { 2922 removeActivityFromHistoryLocked(r); 2923 removedFromHistory = true; 2924 } else { 2925 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2926 r.state = ActivityState.DESTROYED; 2927 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2928 r.app = null; 2929 } 2930 } 2931 2932 r.configChangeFlags = 0; 2933 2934 if (!mLRUActivities.remove(r) && hadApp) { 2935 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2936 } 2937 2938 return removedFromHistory; 2939 } 2940 2941 final void activityDestroyedLocked(IBinder token) { 2942 final long origId = Binder.clearCallingIdentity(); 2943 try { 2944 ActivityRecord r = ActivityRecord.forToken(token); 2945 if (r != null) { 2946 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2947 } 2948 2949 if (isInStackLocked(token) != null) { 2950 if (r.state == ActivityState.DESTROYING) { 2951 cleanUpActivityLocked(r, true, false); 2952 removeActivityFromHistoryLocked(r); 2953 } 2954 } 2955 mStackSupervisor.resumeTopActivitiesLocked(); 2956 } finally { 2957 Binder.restoreCallingIdentity(origId); 2958 } 2959 } 2960 2961 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 2962 ProcessRecord app, String listName) { 2963 int i = list.size(); 2964 if (DEBUG_CLEANUP) Slog.v( 2965 TAG, "Removing app " + app + " from list " + listName 2966 + " with " + i + " entries"); 2967 while (i > 0) { 2968 i--; 2969 ActivityRecord r = list.get(i); 2970 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 2971 if (r.app == app) { 2972 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 2973 list.remove(i); 2974 removeTimeoutsForActivityLocked(r); 2975 } 2976 } 2977 } 2978 2979 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 2980 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 2981 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 2982 "mStoppingActivities"); 2983 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 2984 "mGoingToSleepActivities"); 2985 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 2986 "mWaitingVisibleActivities"); 2987 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 2988 "mFinishingActivities"); 2989 2990 boolean hasVisibleActivities = false; 2991 2992 // Clean out the history list. 2993 int i = numActivities(); 2994 if (DEBUG_CLEANUP) Slog.v( 2995 TAG, "Removing app " + app + " from history with " + i + " entries"); 2996 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2997 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2998 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2999 final ActivityRecord r = activities.get(activityNdx); 3000 --i; 3001 if (DEBUG_CLEANUP) Slog.v( 3002 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3003 if (r.app == app) { 3004 boolean remove; 3005 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3006 // Don't currently have state for the activity, or 3007 // it is finishing -- always remove it. 3008 remove = true; 3009 } else if (r.launchCount > 2 && 3010 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3011 // We have launched this activity too many times since it was 3012 // able to run, so give up and remove it. 3013 remove = true; 3014 } else { 3015 // The process may be gone, but the activity lives on! 3016 remove = false; 3017 } 3018 if (remove) { 3019 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3020 RuntimeException here = new RuntimeException("here"); 3021 here.fillInStackTrace(); 3022 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3023 + ": haveState=" + r.haveState 3024 + " stateNotNeeded=" + r.stateNotNeeded 3025 + " finishing=" + r.finishing 3026 + " state=" + r.state, here); 3027 } 3028 if (!r.finishing) { 3029 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3030 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3031 r.userId, System.identityHashCode(r), 3032 r.task.taskId, r.shortComponentName, 3033 "proc died without state saved"); 3034 if (r.state == ActivityState.RESUMED) { 3035 mService.updateUsageStats(r, false); 3036 } 3037 } 3038 removeActivityFromHistoryLocked(r); 3039 3040 } else { 3041 // We have the current state for this activity, so 3042 // it can be restarted later when needed. 3043 if (localLOGV) Slog.v( 3044 TAG, "Keeping entry, setting app to null"); 3045 if (r.visible) { 3046 hasVisibleActivities = true; 3047 } 3048 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3049 + r); 3050 r.app = null; 3051 r.nowVisible = false; 3052 if (!r.haveState) { 3053 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3054 "App died, clearing saved state of " + r); 3055 r.icicle = null; 3056 } 3057 } 3058 3059 cleanUpActivityLocked(r, true, true); 3060 } 3061 } 3062 } 3063 3064 return hasVisibleActivities; 3065 } 3066 3067 final void updateTransitLocked(int transit, Bundle options) { 3068 if (options != null) { 3069 ActivityRecord r = topRunningActivityLocked(null); 3070 if (r != null && r.state != ActivityState.RESUMED) { 3071 r.updateOptionsLocked(options); 3072 } else { 3073 ActivityOptions.abort(options); 3074 } 3075 } 3076 mWindowManager.prepareAppTransition(transit, false); 3077 } 3078 3079 void moveHomeTaskToTop() { 3080 final int top = mTaskHistory.size() - 1; 3081 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3082 final TaskRecord task = mTaskHistory.get(taskNdx); 3083 if (task.isHomeTask()) { 3084 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3085 mTaskHistory.remove(taskNdx); 3086 mTaskHistory.add(top, task); 3087 mWindowManager.moveTaskToTop(task.taskId); 3088 return; 3089 } 3090 } 3091 } 3092 3093 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3094 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3095 3096 final int numTasks = mTaskHistory.size(); 3097 final int index = mTaskHistory.indexOf(tr); 3098 if (numTasks == 0 || index < 0) { 3099 // nothing to do! 3100 if (reason != null && 3101 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3102 ActivityOptions.abort(options); 3103 } else { 3104 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3105 } 3106 return; 3107 } 3108 3109 moveToFront(); 3110 3111 // Shift all activities with this task up to the top 3112 // of the stack, keeping them in the same internal order. 3113 insertTaskAtTop(tr); 3114 3115 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3116 if (reason != null && 3117 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3118 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3119 ActivityRecord r = topRunningActivityLocked(null); 3120 if (r != null) { 3121 mNoAnimActivities.add(r); 3122 } 3123 ActivityOptions.abort(options); 3124 } else { 3125 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3126 } 3127 3128 mWindowManager.moveTaskToTop(tr.taskId); 3129 3130 mStackSupervisor.resumeTopActivitiesLocked(); 3131 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3132 3133 if (VALIDATE_TOKENS) { 3134 validateAppTokensLocked(); 3135 } 3136 } 3137 3138 /** 3139 * Worker method for rearranging history stack. Implements the function of moving all 3140 * activities for a specific task (gathering them if disjoint) into a single group at the 3141 * bottom of the stack. 3142 * 3143 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3144 * to premeptively cancel the move. 3145 * 3146 * @param taskId The taskId to collect and move to the bottom. 3147 * @return Returns true if the move completed, false if not. 3148 */ 3149 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3150 final TaskRecord tr = taskForIdLocked(taskId); 3151 if (tr == null) { 3152 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3153 return false; 3154 } 3155 3156 Slog.i(TAG, "moveTaskToBack: " + tr); 3157 3158 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3159 3160 // If we have a watcher, preflight the move before committing to it. First check 3161 // for *other* available tasks, but if none are available, then try again allowing the 3162 // current task to be selected. 3163 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3164 ActivityRecord next = topRunningActivityLocked(null, taskId); 3165 if (next == null) { 3166 next = topRunningActivityLocked(null, 0); 3167 } 3168 if (next != null) { 3169 // ask watcher if this is allowed 3170 boolean moveOK = true; 3171 try { 3172 moveOK = mService.mController.activityResuming(next.packageName); 3173 } catch (RemoteException e) { 3174 mService.mController = null; 3175 Watchdog.getInstance().setActivityController(null); 3176 } 3177 if (!moveOK) { 3178 return false; 3179 } 3180 } 3181 } 3182 3183 if (DEBUG_TRANSITION) Slog.v(TAG, 3184 "Prepare to back transition: task=" + taskId); 3185 3186 mTaskHistory.remove(tr); 3187 mTaskHistory.add(0, tr); 3188 3189 // There is an assumption that moving a task to the back moves it behind the home activity. 3190 // We make sure here that some activity in the stack will launch home. 3191 ActivityRecord lastActivity = null; 3192 int numTasks = mTaskHistory.size(); 3193 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3194 final TaskRecord task = mTaskHistory.get(taskNdx); 3195 if (task.mOnTopOfHome) { 3196 break; 3197 } 3198 if (taskNdx == 1) { 3199 // Set the last task before tr to go to home. 3200 task.mOnTopOfHome = true; 3201 } 3202 } 3203 3204 if (reason != null && 3205 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3206 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3207 ActivityRecord r = topRunningActivityLocked(null); 3208 if (r != null) { 3209 mNoAnimActivities.add(r); 3210 } 3211 } else { 3212 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3213 } 3214 mWindowManager.moveTaskToBottom(taskId); 3215 3216 if (VALIDATE_TOKENS) { 3217 validateAppTokensLocked(); 3218 } 3219 3220 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3221 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3222 tr.mOnTopOfHome = false; 3223 return mStackSupervisor.resumeHomeActivity(null); 3224 } 3225 3226 mStackSupervisor.resumeTopActivitiesLocked(); 3227 return true; 3228 } 3229 3230 static final void logStartActivity(int tag, ActivityRecord r, 3231 TaskRecord task) { 3232 final Uri data = r.intent.getData(); 3233 final String strData = data != null ? data.toSafeString() : null; 3234 3235 EventLog.writeEvent(tag, 3236 r.userId, System.identityHashCode(r), task.taskId, 3237 r.shortComponentName, r.intent.getAction(), 3238 r.intent.getType(), strData, r.intent.getFlags()); 3239 } 3240 3241 /** 3242 * Make sure the given activity matches the current configuration. Returns 3243 * false if the activity had to be destroyed. Returns true if the 3244 * configuration is the same, or the activity will remain running as-is 3245 * for whatever reason. Ensures the HistoryRecord is updated with the 3246 * correct configuration and all other bookkeeping is handled. 3247 */ 3248 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3249 int globalChanges) { 3250 if (mConfigWillChange) { 3251 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3252 "Skipping config check (will change): " + r); 3253 return true; 3254 } 3255 3256 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3257 "Ensuring correct configuration: " + r); 3258 3259 // Short circuit: if the two configurations are the exact same 3260 // object (the common case), then there is nothing to do. 3261 Configuration newConfig = mService.mConfiguration; 3262 if (r.configuration == newConfig && !r.forceNewConfig) { 3263 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3264 "Configuration unchanged in " + r); 3265 return true; 3266 } 3267 3268 // We don't worry about activities that are finishing. 3269 if (r.finishing) { 3270 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3271 "Configuration doesn't matter in finishing " + r); 3272 r.stopFreezingScreenLocked(false); 3273 return true; 3274 } 3275 3276 // Okay we now are going to make this activity have the new config. 3277 // But then we need to figure out how it needs to deal with that. 3278 Configuration oldConfig = r.configuration; 3279 r.configuration = newConfig; 3280 3281 // Determine what has changed. May be nothing, if this is a config 3282 // that has come back from the app after going idle. In that case 3283 // we just want to leave the official config object now in the 3284 // activity and do nothing else. 3285 final int changes = oldConfig.diff(newConfig); 3286 if (changes == 0 && !r.forceNewConfig) { 3287 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3288 "Configuration no differences in " + r); 3289 return true; 3290 } 3291 3292 // If the activity isn't currently running, just leave the new 3293 // configuration and it will pick that up next time it starts. 3294 if (r.app == null || r.app.thread == null) { 3295 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3296 "Configuration doesn't matter not running " + r); 3297 r.stopFreezingScreenLocked(false); 3298 r.forceNewConfig = false; 3299 return true; 3300 } 3301 3302 // Figure out how to handle the changes between the configurations. 3303 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3304 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3305 + Integer.toHexString(changes) + ", handles=0x" 3306 + Integer.toHexString(r.info.getRealConfigChanged()) 3307 + ", newConfig=" + newConfig); 3308 } 3309 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3310 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3311 r.configChangeFlags |= changes; 3312 r.startFreezingScreenLocked(r.app, globalChanges); 3313 r.forceNewConfig = false; 3314 if (r.app == null || r.app.thread == null) { 3315 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3316 "Config is destroying non-running " + r); 3317 destroyActivityLocked(r, true, false, "config"); 3318 } else if (r.state == ActivityState.PAUSING) { 3319 // A little annoying: we are waiting for this activity to 3320 // finish pausing. Let's not do anything now, but just 3321 // flag that it needs to be restarted when done pausing. 3322 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3323 "Config is skipping already pausing " + r); 3324 r.configDestroy = true; 3325 return true; 3326 } else if (r.state == ActivityState.RESUMED) { 3327 // Try to optimize this case: the configuration is changing 3328 // and we need to restart the top, resumed activity. 3329 // Instead of doing the normal handshaking, just say 3330 // "restart!". 3331 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3332 "Config is relaunching resumed " + r); 3333 relaunchActivityLocked(r, r.configChangeFlags, true); 3334 r.configChangeFlags = 0; 3335 } else { 3336 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3337 "Config is relaunching non-resumed " + r); 3338 relaunchActivityLocked(r, r.configChangeFlags, false); 3339 r.configChangeFlags = 0; 3340 } 3341 3342 // All done... tell the caller we weren't able to keep this 3343 // activity around. 3344 return false; 3345 } 3346 3347 // Default case: the activity can handle this new configuration, so 3348 // hand it over. Note that we don't need to give it the new 3349 // configuration, since we always send configuration changes to all 3350 // process when they happen so it can just use whatever configuration 3351 // it last got. 3352 if (r.app != null && r.app.thread != null) { 3353 try { 3354 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3355 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3356 } catch (RemoteException e) { 3357 // If process died, whatever. 3358 } 3359 } 3360 r.stopFreezingScreenLocked(false); 3361 3362 return true; 3363 } 3364 3365 private boolean relaunchActivityLocked(ActivityRecord r, 3366 int changes, boolean andResume) { 3367 List<ResultInfo> results = null; 3368 List<Intent> newIntents = null; 3369 if (andResume) { 3370 results = r.results; 3371 newIntents = r.newIntents; 3372 } 3373 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3374 + " with results=" + results + " newIntents=" + newIntents 3375 + " andResume=" + andResume); 3376 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3377 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3378 r.task.taskId, r.shortComponentName); 3379 3380 r.startFreezingScreenLocked(r.app, 0); 3381 3382 mStackSupervisor.removeChildActivityContainers(r); 3383 3384 try { 3385 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3386 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3387 + r); 3388 r.forceNewConfig = false; 3389 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3390 changes, !andResume, new Configuration(mService.mConfiguration)); 3391 // Note: don't need to call pauseIfSleepingLocked() here, because 3392 // the caller will only pass in 'andResume' if this activity is 3393 // currently resumed, which implies we aren't sleeping. 3394 } catch (RemoteException e) { 3395 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3396 } 3397 3398 if (andResume) { 3399 r.results = null; 3400 r.newIntents = null; 3401 r.state = ActivityState.RESUMED; 3402 } else { 3403 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3404 r.state = ActivityState.PAUSED; 3405 } 3406 3407 return true; 3408 } 3409 3410 boolean willActivityBeVisibleLocked(IBinder token) { 3411 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3412 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3413 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3414 final ActivityRecord r = activities.get(activityNdx); 3415 if (r.appToken == token) { 3416 return true; 3417 } 3418 if (r.fullscreen && !r.finishing) { 3419 return false; 3420 } 3421 } 3422 } 3423 final ActivityRecord r = ActivityRecord.forToken(token); 3424 if (r == null) { 3425 return false; 3426 } 3427 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3428 + " would have returned true for r=" + r); 3429 return !r.finishing; 3430 } 3431 3432 void closeSystemDialogsLocked() { 3433 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3434 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3435 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3436 final ActivityRecord r = activities.get(activityNdx); 3437 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3438 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3439 } 3440 } 3441 } 3442 } 3443 3444 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3445 boolean didSomething = false; 3446 TaskRecord lastTask = null; 3447 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3448 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3449 int numActivities = activities.size(); 3450 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3451 ActivityRecord r = activities.get(activityNdx); 3452 final boolean samePackage = r.packageName.equals(name) 3453 || (name == null && r.userId == userId); 3454 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3455 && (samePackage || r.task == lastTask) 3456 && (r.app == null || evenPersistent || !r.app.persistent)) { 3457 if (!doit) { 3458 if (r.finishing) { 3459 // If this activity is just finishing, then it is not 3460 // interesting as far as something to stop. 3461 continue; 3462 } 3463 return true; 3464 } 3465 didSomething = true; 3466 Slog.i(TAG, " Force finishing activity " + r); 3467 if (samePackage) { 3468 if (r.app != null) { 3469 r.app.removed = true; 3470 } 3471 r.app = null; 3472 } 3473 lastTask = r.task; 3474 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3475 true)) { 3476 // r has been deleted from mActivities, accommodate. 3477 --numActivities; 3478 --activityNdx; 3479 } 3480 } 3481 } 3482 } 3483 return didSomething; 3484 } 3485 3486 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3487 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3488 ActivityRecord topRecord = null; 3489 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3490 final TaskRecord task = mTaskHistory.get(taskNdx); 3491 ActivityRecord r = null; 3492 ActivityRecord top = null; 3493 int numActivities = 0; 3494 int numRunning = 0; 3495 final ArrayList<ActivityRecord> activities = task.mActivities; 3496 if (activities.isEmpty()) { 3497 continue; 3498 } 3499 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3500 r = activities.get(activityNdx); 3501 3502 // Initialize state for next task if needed. 3503 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3504 top = r; 3505 numActivities = numRunning = 0; 3506 } 3507 3508 // Add 'r' into the current task. 3509 numActivities++; 3510 if (r.app != null && r.app.thread != null) { 3511 numRunning++; 3512 } 3513 3514 if (localLOGV) Slog.v( 3515 TAG, r.intent.getComponent().flattenToShortString() 3516 + ": task=" + r.task); 3517 } 3518 3519 RunningTaskInfo ci = new RunningTaskInfo(); 3520 ci.id = task.taskId; 3521 ci.baseActivity = r.intent.getComponent(); 3522 ci.topActivity = top.intent.getComponent(); 3523 ci.lastActiveTime = task.lastActiveTime; 3524 3525 if (top.thumbHolder != null) { 3526 ci.description = top.thumbHolder.lastDescription; 3527 } 3528 ci.numActivities = numActivities; 3529 ci.numRunning = numRunning; 3530 //System.out.println( 3531 // "#" + maxNum + ": " + " descr=" + ci.description); 3532 if (receiver != null) { 3533 if (localLOGV) Slog.v( 3534 TAG, "State=" + top.state + "Idle=" + top.idle 3535 + " app=" + top.app 3536 + " thr=" + (top.app != null ? top.app.thread : null)); 3537 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3538 if (top.idle && top.app != null && top.app.thread != null) { 3539 topRecord = top; 3540 } else { 3541 top.thumbnailNeeded = true; 3542 } 3543 } 3544 pending.pendingRecords.add(top); 3545 } 3546 list.add(ci); 3547 } 3548 return topRecord; 3549 } 3550 3551 public void unhandledBackLocked() { 3552 final int top = mTaskHistory.size() - 1; 3553 if (DEBUG_SWITCH) Slog.d( 3554 TAG, "Performing unhandledBack(): top activity at " + top); 3555 if (top >= 0) { 3556 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3557 int activityTop = activities.size() - 1; 3558 if (activityTop > 0) { 3559 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3560 "unhandled-back", true); 3561 } 3562 } 3563 } 3564 3565 /** 3566 * Reset local parameters because an app's activity died. 3567 * @param app The app of the activity that died. 3568 * @return result from removeHistoryRecordsForAppLocked. 3569 */ 3570 boolean handleAppDiedLocked(ProcessRecord app) { 3571 if (mPausingActivity != null && mPausingActivity.app == app) { 3572 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3573 "App died while pausing: " + mPausingActivity); 3574 mPausingActivity = null; 3575 } 3576 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3577 mLastPausedActivity = null; 3578 mLastNoHistoryActivity = null; 3579 } 3580 3581 return removeHistoryRecordsForAppLocked(app); 3582 } 3583 3584 void handleAppCrashLocked(ProcessRecord app) { 3585 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3586 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3587 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3588 final ActivityRecord r = activities.get(activityNdx); 3589 if (r.app == app) { 3590 Slog.w(TAG, " Force finishing activity " 3591 + r.intent.getComponent().flattenToShortString()); 3592 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3593 } 3594 } 3595 } 3596 } 3597 3598 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3599 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3600 boolean printed = false; 3601 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3602 final TaskRecord task = mTaskHistory.get(taskNdx); 3603 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3604 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3605 dumpClient, dumpPackage, needSep, header, 3606 " Task id #" + task.taskId); 3607 if (printed) { 3608 header = null; 3609 } 3610 } 3611 return printed; 3612 } 3613 3614 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3615 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3616 3617 if ("all".equals(name)) { 3618 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3619 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3620 } 3621 } else if ("top".equals(name)) { 3622 final int top = mTaskHistory.size() - 1; 3623 if (top >= 0) { 3624 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3625 int listTop = list.size() - 1; 3626 if (listTop >= 0) { 3627 activities.add(list.get(listTop)); 3628 } 3629 } 3630 } else { 3631 ItemMatcher matcher = new ItemMatcher(); 3632 matcher.build(name); 3633 3634 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3635 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3636 if (matcher.match(r1, r1.intent.getComponent())) { 3637 activities.add(r1); 3638 } 3639 } 3640 } 3641 } 3642 3643 return activities; 3644 } 3645 3646 ActivityRecord restartPackage(String packageName) { 3647 ActivityRecord starting = topRunningActivityLocked(null); 3648 3649 // All activities that came from the package must be 3650 // restarted as if there was a config change. 3651 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3652 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3653 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3654 final ActivityRecord a = activities.get(activityNdx); 3655 if (a.info.packageName.equals(packageName)) { 3656 a.forceNewConfig = true; 3657 if (starting != null && a == starting && a.visible) { 3658 a.startFreezingScreenLocked(starting.app, 3659 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3660 } 3661 } 3662 } 3663 } 3664 3665 return starting; 3666 } 3667 3668 void removeTask(TaskRecord task) { 3669 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3670 mWindowManager.removeTask(task.taskId); 3671 final ActivityRecord r = mResumedActivity; 3672 if (r != null && r.task == task) { 3673 mResumedActivity = null; 3674 } 3675 3676 final int taskNdx = mTaskHistory.indexOf(task); 3677 final int topTaskNdx = mTaskHistory.size() - 1; 3678 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3679 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3680 } 3681 mTaskHistory.remove(task); 3682 3683 if (mTaskHistory.isEmpty()) { 3684 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3685 if (isOnHomeDisplay()) { 3686 mStackSupervisor.moveHomeStack(!isHomeStack()); 3687 } 3688 if (mStacks != null) { 3689 mStacks.remove(this); 3690 mStacks.add(0, this); 3691 } 3692 } 3693 } 3694 3695 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, boolean toTop) { 3696 TaskRecord task = new TaskRecord(taskId, info, intent); 3697 addTask(task, toTop); 3698 return task; 3699 } 3700 3701 ArrayList<TaskRecord> getAllTasks() { 3702 return new ArrayList<TaskRecord>(mTaskHistory); 3703 } 3704 3705 void addTask(final TaskRecord task, final boolean toTop) { 3706 task.stack = this; 3707 if (toTop) { 3708 insertTaskAtTop(task); 3709 } else { 3710 mTaskHistory.add(0, task); 3711 } 3712 } 3713 3714 public int getStackId() { 3715 return mStackId; 3716 } 3717 3718 @Override 3719 public String toString() { 3720 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3721 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3722 } 3723} 3724