ActivityStack.java revision 303e1ff1fec8b240b587bb18b981247a99833aa8
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 android.os.Trace; 40import android.util.Log; 41import com.android.internal.os.BatteryStatsImpl; 42import com.android.server.Watchdog; 43import com.android.server.am.ActivityManagerService.ItemMatcher; 44import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 45import com.android.server.wm.AppTransition; 46import com.android.server.wm.TaskGroup; 47import com.android.server.wm.WindowManagerService; 48 49import android.app.Activity; 50import android.app.ActivityManager; 51import android.app.ActivityOptions; 52import android.app.AppGlobals; 53import android.app.IActivityController; 54import android.app.IThumbnailReceiver; 55import android.app.ResultInfo; 56import android.app.ActivityManager.RunningTaskInfo; 57import android.content.ComponentName; 58import android.content.Intent; 59import android.content.pm.ActivityInfo; 60import android.content.pm.PackageManager; 61import android.content.res.Configuration; 62import android.content.res.Resources; 63import android.graphics.Bitmap; 64import android.net.Uri; 65import android.os.Binder; 66import android.os.Bundle; 67import android.os.Debug; 68import android.os.Handler; 69import android.os.IBinder; 70import android.os.Looper; 71import android.os.Message; 72import android.os.RemoteException; 73import android.os.SystemClock; 74import android.os.SystemProperties; 75import android.os.Trace; 76import android.os.UserHandle; 77import android.util.EventLog; 78import android.util.Slog; 79import android.view.Display; 80 81import java.io.FileDescriptor; 82import java.io.PrintWriter; 83import java.lang.ref.WeakReference; 84import java.util.ArrayList; 85import java.util.Iterator; 86import java.util.List; 87import java.util.Objects; 88 89/** 90 * State and management of a single stack of activities. 91 */ 92final class ActivityStack { 93 94 // Ticks during which we check progress while waiting for an app to launch. 95 static final int LAUNCH_TICK = 500; 96 97 // How long we wait until giving up on the last activity to pause. This 98 // is short because it directly impacts the responsiveness of starting the 99 // next activity. 100 static final int PAUSE_TIMEOUT = 500; 101 102 // How long we wait for the activity to tell us it has stopped before 103 // giving up. This is a good amount of time because we really need this 104 // from the application in order to get its saved state. 105 static final int STOP_TIMEOUT = 10*1000; 106 107 // How long we wait until giving up on an activity telling us it has 108 // finished destroying itself. 109 static final int DESTROY_TIMEOUT = 10*1000; 110 111 // How long until we reset a task when the user returns to it. Currently 112 // disabled. 113 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 114 115 // How long between activity launches that we consider safe to not warn 116 // the user about an unexpected activity being launched on top. 117 static final long START_WARN_TIME = 5*1000; 118 119 // Set to false to disable the preview that is shown while a new activity 120 // is being started. 121 static final boolean SHOW_APP_STARTING_PREVIEW = true; 122 123 // How long to wait for all background Activities to redraw following a call to 124 // convertToTranslucent(). 125 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 126 127 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 128 129 enum ActivityState { 130 INITIALIZING, 131 RESUMED, 132 PAUSING, 133 PAUSED, 134 STOPPING, 135 STOPPED, 136 FINISHING, 137 DESTROYING, 138 DESTROYED 139 } 140 141 final ActivityManagerService mService; 142 final WindowManagerService mWindowManager; 143 144 /** 145 * The back history of all previous (and possibly still 146 * running) activities. It contains #TaskRecord objects. 147 */ 148 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 149 150 /** 151 * Used for validating app tokens with window manager. 152 */ 153 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 154 155 /** 156 * List of running activities, sorted by recent usage. 157 * The first entry in the list is the least recently used. 158 * It contains HistoryRecord objects. 159 */ 160 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 161 162 /** 163 * Animations that for the current transition have requested not to 164 * be considered for the transition animation. 165 */ 166 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * When we are in the process of pausing an activity, before starting the 170 * next one, this variable holds the activity that is currently being paused. 171 */ 172 ActivityRecord mPausingActivity = null; 173 174 /** 175 * This is the last activity that we put into the paused state. This is 176 * used to determine if we need to do an activity transition while sleeping, 177 * when we normally hold the top activity paused. 178 */ 179 ActivityRecord mLastPausedActivity = null; 180 181 /** 182 * Activities that specify No History must be removed once the user navigates away from them. 183 * If the device goes to sleep with such an activity in the paused state then we save it here 184 * and finish it later if another activity replaces it on wakeup. 185 */ 186 ActivityRecord mLastNoHistoryActivity = null; 187 188 /** 189 * Current activity that is resumed, or null if there is none. 190 */ 191 ActivityRecord mResumedActivity = null; 192 193 /** 194 * This is the last activity that has been started. It is only used to 195 * identify when multiple activities are started at once so that the user 196 * can be warned they may not be in the activity they think they are. 197 */ 198 ActivityRecord mLastStartedActivity = null; 199 200 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 201 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 202 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 203 // Activity in mTranslucentActivityWaiting is notified via 204 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 205 // background activity being drawn then the same call will be made with a true value. 206 ActivityRecord mTranslucentActivityWaiting = null; 207 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 208 new ArrayList<ActivityRecord>(); 209 210 /** 211 * Set when we know we are going to be calling updateConfiguration() 212 * soon, so want to skip intermediate config checks. 213 */ 214 boolean mConfigWillChange; 215 216 long mLaunchStartTime = 0; 217 long mFullyDrawnStartTime = 0; 218 219 /** 220 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 221 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 222 */ 223 private ActivityRecord mLastScreenshotActivity = null; 224 private Bitmap mLastScreenshotBitmap = null; 225 226 int mThumbnailWidth = -1; 227 int mThumbnailHeight = -1; 228 229 int mCurrentUser; 230 231 final int mStackId; 232 final ActivityContainer mActivityContainer; 233 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 234 ArrayList<ActivityStack> mStacks; 235 /** The attached Display's unique identifier, or -1 if detached */ 236 int mDisplayId; 237 238 /** Run all ActivityStacks through this */ 239 final ActivityStackSupervisor mStackSupervisor; 240 241 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 242 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 243 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 244 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 245 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 246 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 247 248 static class ScheduleDestroyArgs { 249 final ProcessRecord mOwner; 250 final boolean mOomAdj; 251 final String mReason; 252 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 253 mOwner = owner; 254 mOomAdj = oomAdj; 255 mReason = reason; 256 } 257 } 258 259 final Handler mHandler; 260 261 final class ActivityStackHandler extends Handler { 262 //public Handler() { 263 // if (localLOGV) Slog.v(TAG, "Handler started!"); 264 //} 265 ActivityStackHandler(Looper looper) { 266 super(looper); 267 } 268 269 @Override 270 public void handleMessage(Message msg) { 271 switch (msg.what) { 272 case PAUSE_TIMEOUT_MSG: { 273 ActivityRecord r = (ActivityRecord)msg.obj; 274 // We don't at this point know if the activity is fullscreen, 275 // so we need to be conservative and assume it isn't. 276 Slog.w(TAG, "Activity pause timeout for " + r); 277 synchronized (mService) { 278 if (r.app != null) { 279 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 280 } 281 activityPausedLocked(r.appToken, true); 282 } 283 } break; 284 case LAUNCH_TICK_MSG: { 285 ActivityRecord r = (ActivityRecord)msg.obj; 286 synchronized (mService) { 287 if (r.continueLaunchTickingLocked()) { 288 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 289 } 290 } 291 } break; 292 case DESTROY_TIMEOUT_MSG: { 293 ActivityRecord r = (ActivityRecord)msg.obj; 294 // We don't at this point know if the activity is fullscreen, 295 // so we need to be conservative and assume it isn't. 296 Slog.w(TAG, "Activity destroy timeout for " + r); 297 synchronized (mService) { 298 activityDestroyedLocked(r != null ? r.appToken : null); 299 } 300 } break; 301 case STOP_TIMEOUT_MSG: { 302 ActivityRecord r = (ActivityRecord)msg.obj; 303 // We don't at this point know if the activity is fullscreen, 304 // so we need to be conservative and assume it isn't. 305 Slog.w(TAG, "Activity stop timeout for " + r); 306 synchronized (mService) { 307 if (r.isInHistory()) { 308 activityStoppedLocked(r, null, null, null); 309 } 310 } 311 } break; 312 case DESTROY_ACTIVITIES_MSG: { 313 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 314 synchronized (mService) { 315 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 316 } 317 } break; 318 case TRANSLUCENT_TIMEOUT_MSG: { 319 synchronized (mService) { 320 notifyActivityDrawnLocked(null); 321 } 322 } break; 323 } 324 } 325 } 326 327 int numActivities() { 328 int count = 0; 329 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 330 count += mTaskHistory.get(taskNdx).mActivities.size(); 331 } 332 return count; 333 } 334 335 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 336 mActivityContainer = activityContainer; 337 mStackSupervisor = activityContainer.getOuter(); 338 mService = mStackSupervisor.mService; 339 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 340 mWindowManager = mService.mWindowManager; 341 mStackId = activityContainer.mStackId; 342 mCurrentUser = mService.mCurrentUserId; 343 } 344 345 /** 346 * Checks whether the userid is either the current user or a related user. 347 */ 348 private boolean isRelatedToOrCurrentUserLocked(int userId) { 349 if (mCurrentUser == userId) return true; 350 for (int i = 0; i < mService.mRelatedUserIds.length; i++) { 351 if (mService.mRelatedUserIds[i] == userId) return true; 352 } 353 return false; 354 } 355 356 boolean okToShowLocked(ActivityRecord r) { 357 return isRelatedToOrCurrentUserLocked(r.userId) 358 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 359 } 360 361 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 362 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 363 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 364 if (r != null) { 365 return r; 366 } 367 } 368 return null; 369 } 370 371 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 372 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 373 final TaskRecord task = mTaskHistory.get(taskNdx); 374 final ArrayList<ActivityRecord> activities = task.mActivities; 375 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 376 ActivityRecord r = activities.get(activityNdx); 377 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 378 return r; 379 } 380 } 381 } 382 return null; 383 } 384 385 /** 386 * This is a simplified version of topRunningActivityLocked that provides a number of 387 * optional skip-over modes. It is intended for use with the ActivityController hook only. 388 * 389 * @param token If non-null, any history records matching this token will be skipped. 390 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 391 * 392 * @return Returns the HistoryRecord of the next activity on the stack. 393 */ 394 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 395 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 396 TaskRecord task = mTaskHistory.get(taskNdx); 397 if (task.taskId == taskId) { 398 continue; 399 } 400 ArrayList<ActivityRecord> activities = task.mActivities; 401 for (int i = activities.size() - 1; i >= 0; --i) { 402 final ActivityRecord r = activities.get(i); 403 // Note: the taskId check depends on real taskId fields being non-zero 404 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 405 return r; 406 } 407 } 408 } 409 return null; 410 } 411 412 final ActivityRecord topActivity() { 413 // Iterate to find the first non-empty task stack. Note that this code can 414 // be simplified once we stop storing tasks with empty mActivities lists. 415 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 416 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 417 final int topActivityNdx = activities.size() - 1; 418 if (topActivityNdx >= 0) { 419 return activities.get(topActivityNdx); 420 } 421 } 422 return null; 423 } 424 425 final TaskRecord topTask() { 426 final int size = mTaskHistory.size(); 427 if (size > 0) { 428 return mTaskHistory.get(size - 1); 429 } 430 return null; 431 } 432 433 TaskRecord taskForIdLocked(int id) { 434 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 435 final TaskRecord task = mTaskHistory.get(taskNdx); 436 if (task.taskId == id) { 437 return task; 438 } 439 } 440 return null; 441 } 442 443 ActivityRecord isInStackLocked(IBinder token) { 444 final ActivityRecord r = ActivityRecord.forToken(token); 445 if (r != null) { 446 final TaskRecord task = r.task; 447 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 448 if (task.stack != this) Slog.w(TAG, 449 "Illegal state! task does not point to stack it is in."); 450 return r; 451 } 452 } 453 return null; 454 } 455 456 final boolean updateLRUListLocked(ActivityRecord r) { 457 final boolean hadit = mLRUActivities.remove(r); 458 mLRUActivities.add(r); 459 return hadit; 460 } 461 462 final boolean isHomeStack() { 463 return mStackId == HOME_STACK_ID; 464 } 465 466 final boolean isOnHomeDisplay() { 467 return isAttached() && 468 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 469 } 470 471 final void moveToFront() { 472 if (isAttached()) { 473 if (isOnHomeDisplay()) { 474 mStackSupervisor.moveHomeStack(isHomeStack()); 475 } 476 mStacks.remove(this); 477 mStacks.add(this); 478 } 479 } 480 481 final boolean isAttached() { 482 return mStacks != null; 483 } 484 485 /** 486 * Returns the top activity in any existing task matching the given 487 * Intent. Returns null if no such task is found. 488 */ 489 ActivityRecord findTaskLocked(ActivityRecord target) { 490 Intent intent = target.intent; 491 ActivityInfo info = target.info; 492 ComponentName cls = intent.getComponent(); 493 if (info.targetActivity != null) { 494 cls = new ComponentName(info.packageName, info.targetActivity); 495 } 496 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 497 498 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 499 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 500 final TaskRecord task = mTaskHistory.get(taskNdx); 501 if (task.userId != userId) { 502 // Looking for a different task. 503 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 504 continue; 505 } 506 final ActivityRecord r = task.getTopActivity(); 507 if (r == null || r.finishing || r.userId != userId || 508 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 509 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 510 continue; 511 } 512 513 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 514 + r.task.intent.getComponent().flattenToShortString() 515 + "/aff=" + r.task.affinity + " to new cls=" 516 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 517 if (task.affinity != null) { 518 if (task.affinity.equals(info.taskAffinity)) { 519 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 520 return r; 521 } 522 } else if (task.intent != null && task.intent.getComponent().equals(cls)) { 523 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 524 //dump(); 525 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 526 + r.intent); 527 return r; 528 } else if (task.affinityIntent != null 529 && task.affinityIntent.getComponent().equals(cls)) { 530 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 531 //dump(); 532 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 533 + r.intent); 534 return r; 535 } else if (DEBUG_TASKS) { 536 Slog.d(TAG, "Not a match: " + task); 537 } 538 } 539 540 return null; 541 } 542 543 /** 544 * Returns the first activity (starting from the top of the stack) that 545 * is the same as the given activity. Returns null if no such activity 546 * is found. 547 */ 548 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 549 ComponentName cls = intent.getComponent(); 550 if (info.targetActivity != null) { 551 cls = new ComponentName(info.packageName, info.targetActivity); 552 } 553 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 554 555 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 556 TaskRecord task = mTaskHistory.get(taskNdx); 557 if (!isRelatedToOrCurrentUserLocked(task.userId)) { 558 return null; 559 } 560 final ArrayList<ActivityRecord> activities = task.mActivities; 561 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 562 ActivityRecord r = activities.get(activityNdx); 563 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 564 //Slog.i(TAG, "Found matching class!"); 565 //dump(); 566 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 567 return r; 568 } 569 } 570 } 571 572 return null; 573 } 574 575 /* 576 * Move the activities around in the stack to bring a user to the foreground. 577 */ 578 final void switchUserLocked(int userId) { 579 if (mCurrentUser == userId) { 580 return; 581 } 582 mCurrentUser = userId; 583 584 // Move userId's tasks to the top. 585 int index = mTaskHistory.size(); 586 for (int i = 0; i < index; ) { 587 TaskRecord task = mTaskHistory.get(i); 588 if (isRelatedToOrCurrentUserLocked(task.userId)) { 589 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 590 " moving " + task + " to top"); 591 mTaskHistory.remove(i); 592 mTaskHistory.add(task); 593 --index; 594 // Use same value for i. 595 } else { 596 ++i; 597 } 598 } 599 if (VALIDATE_TOKENS) { 600 validateAppTokensLocked(); 601 } 602 } 603 604 void minimalResumeActivityLocked(ActivityRecord r) { 605 r.state = ActivityState.RESUMED; 606 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 607 + " (starting new instance)"); 608 r.stopped = false; 609 mResumedActivity = r; 610 r.task.touchActiveTime(); 611 mService.addRecentTaskLocked(r.task); 612 completeResumeLocked(r); 613 mStackSupervisor.checkReadyForSleepLocked(); 614 setLaunchTime(r); 615 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 616 } 617 618 private void startLaunchTraces() { 619 if (mFullyDrawnStartTime != 0) { 620 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 621 } 622 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 623 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 624 } 625 626 private void stopFullyDrawnTraceIfNeeded() { 627 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 628 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 629 mFullyDrawnStartTime = 0; 630 } 631 } 632 633 void setLaunchTime(ActivityRecord r) { 634 if (r.displayStartTime == 0) { 635 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 636 if (mLaunchStartTime == 0) { 637 startLaunchTraces(); 638 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 639 } 640 } else if (mLaunchStartTime == 0) { 641 startLaunchTraces(); 642 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 643 } 644 } 645 646 void clearLaunchTime(ActivityRecord r) { 647 // Make sure that there is no activity waiting for this to launch. 648 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 649 r.displayStartTime = r.fullyDrawnStartTime = 0; 650 } else { 651 mStackSupervisor.removeTimeoutsForActivityLocked(r); 652 mStackSupervisor.scheduleIdleTimeoutLocked(r); 653 } 654 } 655 656 void awakeFromSleepingLocked() { 657 // Ensure activities are no longer sleeping. 658 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 659 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 660 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 661 activities.get(activityNdx).setSleeping(false); 662 } 663 } 664 } 665 666 /** 667 * @return true if something must be done before going to sleep. 668 */ 669 boolean checkReadyForSleepLocked() { 670 if (mResumedActivity != null) { 671 // Still have something resumed; can't sleep until it is paused. 672 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 673 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 674 startPausingLocked(false, true); 675 return true; 676 } 677 if (mPausingActivity != null) { 678 // Still waiting for something to pause; can't sleep yet. 679 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 680 return true; 681 } 682 683 return false; 684 } 685 686 void goToSleep() { 687 ensureActivitiesVisibleLocked(null, 0); 688 689 // Make sure any stopped but visible activities are now sleeping. 690 // This ensures that the activity's onStop() is called. 691 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 692 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 693 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 694 final ActivityRecord r = activities.get(activityNdx); 695 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 696 r.setSleeping(true); 697 } 698 } 699 } 700 } 701 702 public final Bitmap screenshotActivities(ActivityRecord who) { 703 if (who.noDisplay) { 704 return null; 705 } 706 707 TaskRecord tr = who.task; 708 if (mService.getMostRecentTask() != tr && tr.intent != null && 709 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 710 // If this task is being excluded from recents, we don't want to take 711 // the expense of capturing a thumbnail, since we will never show it. 712 return null; 713 } 714 715 Resources res = mService.mContext.getResources(); 716 int w = mThumbnailWidth; 717 int h = mThumbnailHeight; 718 if (w < 0) { 719 if (SystemProperties.getBoolean("persist.recents.use_alternate", false)) { 720 mThumbnailWidth = w = 721 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 722 mThumbnailHeight = h = 723 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 724 } else { 725 mThumbnailWidth = w = 726 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 727 mThumbnailHeight = h = 728 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 729 } 730 } 731 732 if (w > 0) { 733 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 734 || mLastScreenshotActivity.state == ActivityState.RESUMED 735 || mLastScreenshotBitmap.getWidth() != w 736 || mLastScreenshotBitmap.getHeight() != h) { 737 mLastScreenshotActivity = who; 738 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 739 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 740 } 741 if (mLastScreenshotBitmap != null) { 742 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 743 } 744 } 745 return null; 746 } 747 748 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 749 if (mPausingActivity != null) { 750 Slog.e(TAG, "Trying to pause when pause is already pending for " 751 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 752 } 753 ActivityRecord prev = mResumedActivity; 754 if (prev == null) { 755 Slog.e(TAG, "Trying to pause when nothing is resumed", 756 new RuntimeException("here").fillInStackTrace()); 757 mStackSupervisor.resumeTopActivitiesLocked(); 758 return; 759 } 760 761 if (mActivityContainer.mParentActivity == null) { 762 // Top level stack, not a child. Look for child stacks. 763 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 764 } 765 766 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 767 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 768 mResumedActivity = null; 769 mPausingActivity = prev; 770 mLastPausedActivity = prev; 771 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 772 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 773 prev.state = ActivityState.PAUSING; 774 prev.task.touchActiveTime(); 775 clearLaunchTime(prev); 776 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 777 if (next == null || next.task != prev.task) { 778 prev.updateThumbnail(screenshotActivities(prev), null); 779 } 780 stopFullyDrawnTraceIfNeeded(); 781 782 mService.updateCpuStats(); 783 784 if (prev.app != null && prev.app.thread != null) { 785 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 786 try { 787 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 788 prev.userId, System.identityHashCode(prev), 789 prev.shortComponentName); 790 mService.updateUsageStats(prev, false); 791 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 792 userLeaving, prev.configChangeFlags); 793 } catch (Exception e) { 794 // Ignore exception, if process died other code will cleanup. 795 Slog.w(TAG, "Exception thrown during pause", e); 796 mPausingActivity = null; 797 mLastPausedActivity = null; 798 mLastNoHistoryActivity = null; 799 } 800 } else { 801 mPausingActivity = null; 802 mLastPausedActivity = null; 803 mLastNoHistoryActivity = null; 804 } 805 806 // If we are not going to sleep, we want to ensure the device is 807 // awake until the next activity is started. 808 if (!mService.isSleepingOrShuttingDown()) { 809 mStackSupervisor.acquireLaunchWakelock(); 810 } 811 812 if (mPausingActivity != null) { 813 // Have the window manager pause its key dispatching until the new 814 // activity has started. If we're pausing the activity just because 815 // the screen is being turned off and the UI is sleeping, don't interrupt 816 // key dispatch; the same activity will pick it up again on wakeup. 817 if (!uiSleeping) { 818 prev.pauseKeyDispatchingLocked(); 819 } else { 820 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 821 } 822 823 // Schedule a pause timeout in case the app doesn't respond. 824 // We don't give it much time because this directly impacts the 825 // responsiveness seen by the user. 826 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 827 msg.obj = prev; 828 prev.pauseTime = SystemClock.uptimeMillis(); 829 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 830 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 831 } else { 832 // This activity failed to schedule the 833 // pause, so just treat it as being paused now. 834 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 835 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 836 } 837 } 838 839 final void activityPausedLocked(IBinder token, boolean timeout) { 840 if (DEBUG_PAUSE) Slog.v( 841 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 842 843 final ActivityRecord r = isInStackLocked(token); 844 if (r != null) { 845 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 846 if (mPausingActivity == r) { 847 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 848 + (timeout ? " (due to timeout)" : " (pause complete)")); 849 r.state = ActivityState.PAUSED; 850 completePauseLocked(); 851 } else { 852 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 853 r.userId, System.identityHashCode(r), r.shortComponentName, 854 mPausingActivity != null 855 ? mPausingActivity.shortComponentName : "(none)"); 856 } 857 } 858 } 859 860 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 861 CharSequence description) { 862 if (r.state != ActivityState.STOPPING) { 863 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 864 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 865 return; 866 } 867 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 868 if (icicle != null) { 869 // If icicle is null, this is happening due to a timeout, so we 870 // haven't really saved the state. 871 r.icicle = icicle; 872 r.haveState = true; 873 r.launchCount = 0; 874 r.updateThumbnail(thumbnail, description); 875 } 876 if (!r.stopped) { 877 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 878 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 879 r.stopped = true; 880 r.state = ActivityState.STOPPED; 881 if (r.finishing) { 882 r.clearOptionsLocked(); 883 } else { 884 if (r.configDestroy) { 885 destroyActivityLocked(r, true, false, "stop-config"); 886 mStackSupervisor.resumeTopActivitiesLocked(); 887 } else { 888 mStackSupervisor.updatePreviousProcessLocked(r); 889 } 890 } 891 } 892 } 893 894 private void completePauseLocked() { 895 ActivityRecord prev = mPausingActivity; 896 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 897 898 if (prev != null) { 899 if (prev.finishing) { 900 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 901 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 902 } else if (prev.app != null) { 903 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 904 if (prev.waitingVisible) { 905 prev.waitingVisible = false; 906 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 907 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 908 TAG, "Complete pause, no longer waiting: " + prev); 909 } 910 if (prev.configDestroy) { 911 // The previous is being paused because the configuration 912 // is changing, which means it is actually stopping... 913 // To juggle the fact that we are also starting a new 914 // instance right now, we need to first completely stop 915 // the current instance before starting the new one. 916 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 917 destroyActivityLocked(prev, true, false, "pause-config"); 918 } else { 919 mStackSupervisor.mStoppingActivities.add(prev); 920 if (mStackSupervisor.mStoppingActivities.size() > 3 || 921 prev.frontOfTask && mTaskHistory.size() <= 1) { 922 // If we already have a few activities waiting to stop, 923 // then give up on things going idle and start clearing 924 // them out. Or if r is the last of activity of the last task the stack 925 // will be empty and must be cleared immediately. 926 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 927 mStackSupervisor.scheduleIdleLocked(); 928 } else { 929 mStackSupervisor.checkReadyForSleepLocked(); 930 } 931 } 932 } else { 933 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 934 prev = null; 935 } 936 mPausingActivity = null; 937 } 938 939 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 940 if (!mService.isSleepingOrShuttingDown()) { 941 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 942 } else { 943 mStackSupervisor.checkReadyForSleepLocked(); 944 ActivityRecord top = topStack.topRunningActivityLocked(null); 945 if (top == null || (prev != null && top != prev)) { 946 // If there are no more activities available to run, 947 // do resume anyway to start something. Also if the top 948 // activity on the stack is not the just paused activity, 949 // we need to go ahead and resume it to ensure we complete 950 // an in-flight app switch. 951 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 952 } 953 } 954 955 if (prev != null) { 956 prev.resumeKeyDispatchingLocked(); 957 958 if (prev.app != null && prev.cpuTimeAtResume > 0 959 && mService.mBatteryStatsService.isOnBattery()) { 960 long diff; 961 synchronized (mService.mProcessCpuThread) { 962 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 963 - prev.cpuTimeAtResume; 964 } 965 if (diff > 0) { 966 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 967 synchronized (bsi) { 968 BatteryStatsImpl.Uid.Proc ps = 969 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 970 prev.info.packageName); 971 if (ps != null) { 972 ps.addForegroundTimeLocked(diff); 973 } 974 } 975 } 976 } 977 prev.cpuTimeAtResume = 0; // reset it 978 } 979 } 980 981 /** 982 * Once we know that we have asked an application to put an activity in 983 * the resumed state (either by launching it or explicitly telling it), 984 * this function updates the rest of our state to match that fact. 985 */ 986 private void completeResumeLocked(ActivityRecord next) { 987 next.idle = false; 988 next.results = null; 989 next.newIntents = null; 990 if (next.nowVisible) { 991 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 992 mStackSupervisor.dismissKeyguard(); 993 } 994 995 // schedule an idle timeout in case the app doesn't do it for us. 996 mStackSupervisor.scheduleIdleTimeoutLocked(next); 997 998 mStackSupervisor.reportResumedActivityLocked(next); 999 1000 next.resumeKeyDispatchingLocked(); 1001 mNoAnimActivities.clear(); 1002 1003 // Mark the point when the activity is resuming 1004 // TODO: To be more accurate, the mark should be before the onCreate, 1005 // not after the onResume. But for subsequent starts, onResume is fine. 1006 if (next.app != null) { 1007 synchronized (mService.mProcessCpuThread) { 1008 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1009 } 1010 } else { 1011 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1012 } 1013 } 1014 1015 /** 1016 * Determine if home should be visible below the passed record. 1017 * @param record activity we are querying for. 1018 * @return true if home is visible below the passed activity, false otherwise. 1019 */ 1020 boolean isActivityOverHome(ActivityRecord record) { 1021 // Start at record and go down, look for either home or a visible fullscreen activity. 1022 final TaskRecord recordTask = record.task; 1023 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1024 TaskRecord task = mTaskHistory.get(taskNdx); 1025 final ArrayList<ActivityRecord> activities = task.mActivities; 1026 final int startNdx = 1027 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1028 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1029 final ActivityRecord r = activities.get(activityNdx); 1030 if (r.isHomeActivity()) { 1031 return true; 1032 } 1033 if (!r.finishing && r.fullscreen) { 1034 // Passed activity is over a fullscreen activity. 1035 return false; 1036 } 1037 } 1038 if (task.mOnTopOfHome) { 1039 // Got to the bottom of a task on top of home without finding a visible fullscreen 1040 // activity. Home is visible. 1041 return true; 1042 } 1043 } 1044 // Got to the bottom of this stack and still don't know. If this is over the home stack 1045 // then record is over home. May not work if we ever get more than two layers. 1046 return mStackSupervisor.isFrontStack(this); 1047 } 1048 1049 /** 1050 * Version of ensureActivitiesVisible that can easily be called anywhere. 1051 */ 1052 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1053 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1054 } 1055 1056 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1057 boolean forceHomeShown) { 1058 ActivityRecord r = topRunningActivityLocked(null); 1059 return r != null && 1060 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1061 } 1062 1063 /** 1064 * Make sure that all activities that need to be visible (that is, they 1065 * currently can be seen by the user) actually are. 1066 */ 1067 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1068 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1069 if (DEBUG_VISBILITY) Slog.v( 1070 TAG, "ensureActivitiesVisible behind " + top 1071 + " configChanges=0x" + Integer.toHexString(configChanges)); 1072 1073 if (mTranslucentActivityWaiting != top) { 1074 mUndrawnActivitiesBelowTopTranslucent.clear(); 1075 if (mTranslucentActivityWaiting != null) { 1076 // Call the callback with a timeout indication. 1077 notifyActivityDrawnLocked(null); 1078 mTranslucentActivityWaiting = null; 1079 } 1080 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1081 } 1082 1083 // If the top activity is not fullscreen, then we need to 1084 // make sure any activities under it are now visible. 1085 boolean aboveTop = true; 1086 boolean showHomeBehindStack = false; 1087 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1088 !(forceHomeShown && isHomeStack()); 1089 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1090 final TaskRecord task = mTaskHistory.get(taskNdx); 1091 final ArrayList<ActivityRecord> activities = task.mActivities; 1092 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1093 final ActivityRecord r = activities.get(activityNdx); 1094 if (r.finishing) { 1095 continue; 1096 } 1097 if (aboveTop && r != top) { 1098 continue; 1099 } 1100 aboveTop = false; 1101 if (!behindFullscreen) { 1102 if (DEBUG_VISBILITY) Slog.v( 1103 TAG, "Make visible? " + r + " finishing=" + r.finishing 1104 + " state=" + r.state); 1105 1106 final boolean doThisProcess = onlyThisProcess == null 1107 || onlyThisProcess.equals(r.processName); 1108 1109 // First: if this is not the current activity being started, make 1110 // sure it matches the current configuration. 1111 if (r != starting && doThisProcess) { 1112 ensureActivityConfigurationLocked(r, 0); 1113 } 1114 1115 if (r.app == null || r.app.thread == null) { 1116 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1117 // This activity needs to be visible, but isn't even 1118 // running... get it started, but don't resume it 1119 // at this point. 1120 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1121 if (r != starting) { 1122 r.startFreezingScreenLocked(r.app, configChanges); 1123 } 1124 if (!r.visible) { 1125 if (DEBUG_VISBILITY) Slog.v( 1126 TAG, "Starting and making visible: " + r); 1127 r.visible = true; 1128 mWindowManager.setAppVisibility(r.appToken, true); 1129 } 1130 if (r != starting) { 1131 mStackSupervisor.startSpecificActivityLocked(r, false, false, null); 1132 } 1133 } 1134 1135 } else if (r.visible) { 1136 // If this activity is already visible, then there is nothing 1137 // else to do here. 1138 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1139 r.stopFreezingScreenLocked(false); 1140 1141 } else if (onlyThisProcess == null) { 1142 // This activity is not currently visible, but is running. 1143 // Tell it to become visible. 1144 r.visible = true; 1145 if (r.state != ActivityState.RESUMED && r != starting) { 1146 // If this activity is paused, tell it 1147 // to now show its window. 1148 if (DEBUG_VISBILITY) Slog.v( 1149 TAG, "Making visible and scheduling visibility: " + r); 1150 try { 1151 if (mTranslucentActivityWaiting != null) { 1152 mUndrawnActivitiesBelowTopTranslucent.add(r); 1153 } 1154 mWindowManager.setAppVisibility(r.appToken, true); 1155 r.sleeping = false; 1156 r.app.pendingUiClean = true; 1157 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1158 r.stopFreezingScreenLocked(false); 1159 } catch (Exception e) { 1160 // Just skip on any failure; we'll make it 1161 // visible when it next restarts. 1162 Slog.w(TAG, "Exception thrown making visibile: " 1163 + r.intent.getComponent(), e); 1164 } 1165 } 1166 } 1167 1168 // Aggregate current change flags. 1169 configChanges |= r.configChangeFlags; 1170 1171 if (r.fullscreen) { 1172 // At this point, nothing else needs to be shown 1173 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1174 behindFullscreen = true; 1175 } else if (isActivityOverHome(r)) { 1176 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1177 showHomeBehindStack = true; 1178 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1179 } 1180 } else { 1181 if (DEBUG_VISBILITY) Slog.v( 1182 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1183 + " state=" + r.state 1184 + " behindFullscreen=" + behindFullscreen); 1185 // Now for any activities that aren't visible to the user, make 1186 // sure they no longer are keeping the screen frozen. 1187 if (r.visible) { 1188 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1189 r.visible = false; 1190 try { 1191 mWindowManager.setAppVisibility(r.appToken, false); 1192 switch (r.state) { 1193 case STOPPING: 1194 case STOPPED: 1195 if (r.app != null && r.app.thread != null) { 1196 if (DEBUG_VISBILITY) Slog.v( 1197 TAG, "Scheduling invisibility: " + r); 1198 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1199 } 1200 break; 1201 1202 case INITIALIZING: 1203 case RESUMED: 1204 case PAUSING: 1205 case PAUSED: 1206 // This case created for transitioning activities from 1207 // translucent to opaque {@link Activity#convertToOpaque}. 1208 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1209 mStackSupervisor.mStoppingActivities.add(r); 1210 } 1211 mStackSupervisor.scheduleIdleLocked(); 1212 break; 1213 1214 default: 1215 break; 1216 } 1217 } catch (Exception e) { 1218 // Just skip on any failure; we'll make it 1219 // visible when it next restarts. 1220 Slog.w(TAG, "Exception thrown making hidden: " 1221 + r.intent.getComponent(), e); 1222 } 1223 } else { 1224 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1225 } 1226 } 1227 } 1228 } 1229 return showHomeBehindStack; 1230 } 1231 1232 void convertToTranslucent(ActivityRecord r) { 1233 mTranslucentActivityWaiting = r; 1234 mUndrawnActivitiesBelowTopTranslucent.clear(); 1235 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1236 } 1237 1238 /** 1239 * Called as activities below the top translucent activity are redrawn. When the last one is 1240 * redrawn notify the top activity by calling 1241 * {@link Activity#onTranslucentConversionComplete}. 1242 * 1243 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1244 * occurred and the activity will be notified immediately. 1245 */ 1246 void notifyActivityDrawnLocked(ActivityRecord r) { 1247 if ((r == null) 1248 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1249 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1250 // The last undrawn activity below the top has just been drawn. If there is an 1251 // opaque activity at the top, notify it that it can become translucent safely now. 1252 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1253 mTranslucentActivityWaiting = null; 1254 mUndrawnActivitiesBelowTopTranslucent.clear(); 1255 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1256 1257 if (waitingActivity != null) { 1258 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1259 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1260 try { 1261 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1262 waitingActivity.appToken, r != null); 1263 } catch (RemoteException e) { 1264 } 1265 } 1266 } 1267 } 1268 } 1269 1270 /** If any activities below the top running one are in the INITIALIZING state and they have a 1271 * starting window displayed then remove that starting window. It is possible that the activity 1272 * in this state will never resumed in which case that starting window will be orphaned. */ 1273 void cancelInitializingActivities() { 1274 final ActivityRecord topActivity = topRunningActivityLocked(null); 1275 boolean aboveTop = true; 1276 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1277 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1278 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1279 final ActivityRecord r = activities.get(activityNdx); 1280 if (aboveTop) { 1281 if (r == topActivity) { 1282 aboveTop = false; 1283 } 1284 continue; 1285 } 1286 1287 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1288 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1289 r.mStartingWindowShown = false; 1290 mWindowManager.removeAppStartingWindow(r.appToken); 1291 } 1292 } 1293 } 1294 } 1295 1296 /** 1297 * Ensure that the top activity in the stack is resumed. 1298 * 1299 * @param prev The previously resumed activity, for when in the process 1300 * of pausing; can be null to call from elsewhere. 1301 * 1302 * @return Returns true if something is being resumed, or false if 1303 * nothing happened. 1304 */ 1305 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1306 return resumeTopActivityLocked(prev, null); 1307 } 1308 1309 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1310 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1311 1312 ActivityRecord parent = mActivityContainer.mParentActivity; 1313 if (parent != null && parent.state != ActivityState.RESUMED) { 1314 // Do not resume this stack if its parent is not resumed. 1315 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1316 return false; 1317 } 1318 1319 cancelInitializingActivities(); 1320 1321 // Find the first activity that is not finishing. 1322 ActivityRecord next = topRunningActivityLocked(null); 1323 1324 // Remember how we'll process this pause/resume situation, and ensure 1325 // that the state is reset however we wind up proceeding. 1326 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1327 mStackSupervisor.mUserLeaving = false; 1328 1329 if (next == null) { 1330 // There are no more activities! Let's just start up the 1331 // Launcher... 1332 ActivityOptions.abort(options); 1333 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1334 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1335 // Only resume home if on home display 1336 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1337 } 1338 1339 next.delayedResume = false; 1340 1341 // If the top activity is the resumed one, nothing to do. 1342 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1343 mStackSupervisor.allResumedActivitiesComplete()) { 1344 // Make sure we have executed any pending transitions, since there 1345 // should be nothing left to do at this point. 1346 mWindowManager.executeAppTransition(); 1347 mNoAnimActivities.clear(); 1348 ActivityOptions.abort(options); 1349 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1350 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1351 return false; 1352 } 1353 1354 final TaskRecord nextTask = next.task; 1355 final TaskRecord prevTask = prev != null ? prev.task : null; 1356 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1357 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1358 if (prevTask == nextTask) { 1359 prevTask.setFrontOfTask(); 1360 } else if (prevTask != topTask()) { 1361 // This task is going away but it was supposed to return to the home task. 1362 // Now the task above it has to return to the home task instead. 1363 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1364 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1365 } else { 1366 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1367 "resumeTopActivityLocked: Launching home next"); 1368 // Only resume home if on home display 1369 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1370 } 1371 } 1372 1373 // If we are sleeping, and there is no resumed activity, and the top 1374 // activity is paused, well that is the state we want. 1375 if (mService.isSleepingOrShuttingDown() 1376 && mLastPausedActivity == next 1377 && mStackSupervisor.allPausedActivitiesComplete()) { 1378 // Make sure we have executed any pending transitions, since there 1379 // should be nothing left to do at this point. 1380 mWindowManager.executeAppTransition(); 1381 mNoAnimActivities.clear(); 1382 ActivityOptions.abort(options); 1383 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1384 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1385 return false; 1386 } 1387 1388 // Make sure that the user who owns this activity is started. If not, 1389 // we will just leave it as is because someone should be bringing 1390 // another user's activities to the top of the stack. 1391 if (mService.mStartedUsers.get(next.userId) == null) { 1392 Slog.w(TAG, "Skipping resume of top activity " + next 1393 + ": user " + next.userId + " is stopped"); 1394 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1395 return false; 1396 } 1397 1398 // The activity may be waiting for stop, but that is no longer 1399 // appropriate for it. 1400 mStackSupervisor.mStoppingActivities.remove(next); 1401 mStackSupervisor.mGoingToSleepActivities.remove(next); 1402 next.sleeping = false; 1403 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1404 1405 next.updateOptionsLocked(options); 1406 1407 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1408 1409 // If we are currently pausing an activity, then don't do anything 1410 // until that is done. 1411 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1412 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1413 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1414 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1415 return false; 1416 } 1417 1418 // Okay we are now going to start a switch, to 'next'. We may first 1419 // have to pause the current activity, but this is an important point 1420 // where we have decided to go to 'next' so keep track of that. 1421 // XXX "App Redirected" dialog is getting too many false positives 1422 // at this point, so turn off for now. 1423 if (false) { 1424 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1425 long now = SystemClock.uptimeMillis(); 1426 final boolean inTime = mLastStartedActivity.startTime != 0 1427 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1428 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1429 final int nextUid = next.info.applicationInfo.uid; 1430 if (inTime && lastUid != nextUid 1431 && lastUid != next.launchedFromUid 1432 && mService.checkPermission( 1433 android.Manifest.permission.STOP_APP_SWITCHES, 1434 -1, next.launchedFromUid) 1435 != PackageManager.PERMISSION_GRANTED) { 1436 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1437 } else { 1438 next.startTime = now; 1439 mLastStartedActivity = next; 1440 } 1441 } else { 1442 next.startTime = SystemClock.uptimeMillis(); 1443 mLastStartedActivity = next; 1444 } 1445 } 1446 1447 // We need to start pausing the current activity so the top one 1448 // can be resumed... 1449 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1450 if (mResumedActivity != null) { 1451 pausing = true; 1452 startPausingLocked(userLeaving, false); 1453 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1454 } 1455 if (pausing) { 1456 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1457 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1458 // At this point we want to put the upcoming activity's process 1459 // at the top of the LRU list, since we know we will be needing it 1460 // very soon and it would be a waste to let it get killed if it 1461 // happens to be sitting towards the end. 1462 if (next.app != null && next.app.thread != null) { 1463 // No reason to do full oom adj update here; we'll let that 1464 // happen whenever it needs to later. 1465 mService.updateLruProcessLocked(next.app, true, null); 1466 } 1467 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1468 return true; 1469 } 1470 1471 // If the most recent activity was noHistory but was only stopped rather 1472 // than stopped+finished because the device went to sleep, we need to make 1473 // sure to finish it as we're making a new activity topmost. 1474 if (mService.mSleeping && mLastNoHistoryActivity != null && 1475 !mLastNoHistoryActivity.finishing) { 1476 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1477 " on new resume"); 1478 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1479 null, "no-history", false); 1480 mLastNoHistoryActivity = null; 1481 } 1482 1483 if (prev != null && prev != next) { 1484 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1485 prev.waitingVisible = true; 1486 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1487 if (DEBUG_SWITCH) Slog.v( 1488 TAG, "Resuming top, waiting visible to hide: " + prev); 1489 } else { 1490 // The next activity is already visible, so hide the previous 1491 // activity's windows right now so we can show the new one ASAP. 1492 // We only do this if the previous is finishing, which should mean 1493 // it is on top of the one being resumed so hiding it quickly 1494 // is good. Otherwise, we want to do the normal route of allowing 1495 // the resumed activity to be shown so we can decide if the 1496 // previous should actually be hidden depending on whether the 1497 // new one is found to be full-screen or not. 1498 if (prev.finishing) { 1499 mWindowManager.setAppVisibility(prev.appToken, false); 1500 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1501 + prev + ", waitingVisible=" 1502 + (prev != null ? prev.waitingVisible : null) 1503 + ", nowVisible=" + next.nowVisible); 1504 } else { 1505 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1506 + prev + ", waitingVisible=" 1507 + (prev != null ? prev.waitingVisible : null) 1508 + ", nowVisible=" + next.nowVisible); 1509 } 1510 } 1511 } 1512 1513 // Launching this app's activity, make sure the app is no longer 1514 // considered stopped. 1515 try { 1516 AppGlobals.getPackageManager().setPackageStoppedState( 1517 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1518 } catch (RemoteException e1) { 1519 } catch (IllegalArgumentException e) { 1520 Slog.w(TAG, "Failed trying to unstop package " 1521 + next.packageName + ": " + e); 1522 } 1523 1524 // We are starting up the next activity, so tell the window manager 1525 // that the previous one will be hidden soon. This way it can know 1526 // to ignore it when computing the desired screen orientation. 1527 boolean anim = true; 1528 if (prev != null) { 1529 if (prev.finishing) { 1530 if (DEBUG_TRANSITION) Slog.v(TAG, 1531 "Prepare close transition: prev=" + prev); 1532 if (mNoAnimActivities.contains(prev)) { 1533 anim = false; 1534 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1535 } else { 1536 mWindowManager.prepareAppTransition(prev.task == next.task 1537 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1538 : AppTransition.TRANSIT_TASK_CLOSE, false); 1539 } 1540 mWindowManager.setAppWillBeHidden(prev.appToken); 1541 mWindowManager.setAppVisibility(prev.appToken, false); 1542 } else { 1543 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1544 if (mNoAnimActivities.contains(next)) { 1545 anim = false; 1546 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1547 } else { 1548 mWindowManager.prepareAppTransition(prev.task == next.task 1549 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1550 : AppTransition.TRANSIT_TASK_OPEN, false); 1551 } 1552 } 1553 if (false) { 1554 mWindowManager.setAppWillBeHidden(prev.appToken); 1555 mWindowManager.setAppVisibility(prev.appToken, false); 1556 } 1557 } else { 1558 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1559 if (mNoAnimActivities.contains(next)) { 1560 anim = false; 1561 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1562 } else { 1563 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1564 } 1565 } 1566 1567 Bundle resumeAnimOptions = null; 1568 if (anim) { 1569 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1570 if (opts != null) { 1571 resumeAnimOptions = opts.toBundle(); 1572 } 1573 next.applyOptionsLocked(); 1574 } else { 1575 next.clearOptionsLocked(); 1576 } 1577 1578 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1579 if (next.app != null && next.app.thread != null) { 1580 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1581 1582 // This activity is now becoming visible. 1583 mWindowManager.setAppVisibility(next.appToken, true); 1584 1585 // schedule launch ticks to collect information about slow apps. 1586 next.startLaunchTickingLocked(); 1587 1588 ActivityRecord lastResumedActivity = 1589 lastStack == null ? null :lastStack.mResumedActivity; 1590 ActivityState lastState = next.state; 1591 1592 mService.updateCpuStats(); 1593 1594 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1595 next.state = ActivityState.RESUMED; 1596 mResumedActivity = next; 1597 next.task.touchActiveTime(); 1598 mService.addRecentTaskLocked(next.task); 1599 mService.updateLruProcessLocked(next.app, true, null); 1600 updateLRUListLocked(next); 1601 mService.updateOomAdjLocked(); 1602 1603 // Have the window manager re-evaluate the orientation of 1604 // the screen based on the new activity order. 1605 boolean notUpdated = true; 1606 if (mStackSupervisor.isFrontStack(this)) { 1607 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1608 mService.mConfiguration, 1609 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1610 if (config != null) { 1611 next.frozenBeforeDestroy = true; 1612 } 1613 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1614 } 1615 1616 if (notUpdated) { 1617 // The configuration update wasn't able to keep the existing 1618 // instance of the activity, and instead started a new one. 1619 // We should be all done, but let's just make sure our activity 1620 // is still at the top and schedule another run if something 1621 // weird happened. 1622 ActivityRecord nextNext = topRunningActivityLocked(null); 1623 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1624 "Activity config changed during resume: " + next 1625 + ", new next: " + nextNext); 1626 if (nextNext != next) { 1627 // Do over! 1628 mStackSupervisor.scheduleResumeTopActivities(); 1629 } 1630 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1631 mNoAnimActivities.clear(); 1632 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1633 return true; 1634 } 1635 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1636 return false; 1637 } 1638 1639 try { 1640 // Deliver all pending results. 1641 ArrayList<ResultInfo> a = next.results; 1642 if (a != null) { 1643 final int N = a.size(); 1644 if (!next.finishing && N > 0) { 1645 if (DEBUG_RESULTS) Slog.v( 1646 TAG, "Delivering results to " + next 1647 + ": " + a); 1648 next.app.thread.scheduleSendResult(next.appToken, a); 1649 } 1650 } 1651 1652 if (next.newIntents != null) { 1653 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1654 } 1655 1656 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1657 next.userId, System.identityHashCode(next), 1658 next.task.taskId, next.shortComponentName); 1659 1660 next.sleeping = false; 1661 mService.showAskCompatModeDialogLocked(next); 1662 next.app.pendingUiClean = true; 1663 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1664 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1665 mService.isNextTransitionForward(), resumeAnimOptions); 1666 1667 mStackSupervisor.checkReadyForSleepLocked(); 1668 1669 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1670 } catch (Exception e) { 1671 // Whoops, need to restart this activity! 1672 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1673 + lastState + ": " + next); 1674 next.state = lastState; 1675 if (lastStack != null) { 1676 lastStack.mResumedActivity = lastResumedActivity; 1677 } 1678 Slog.i(TAG, "Restarting because process died: " + next); 1679 if (!next.hasBeenLaunched) { 1680 next.hasBeenLaunched = true; 1681 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1682 mStackSupervisor.isFrontStack(lastStack)) { 1683 mWindowManager.setAppStartingWindow( 1684 next.appToken, next.packageName, next.theme, 1685 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1686 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1687 next.windowFlags, null, true); 1688 } 1689 mStackSupervisor.startSpecificActivityLocked(next, true, false, resumeAnimOptions); 1690 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1691 return true; 1692 } 1693 1694 // From this point on, if something goes wrong there is no way 1695 // to recover the activity. 1696 try { 1697 next.visible = true; 1698 completeResumeLocked(next); 1699 } catch (Exception e) { 1700 // If any exception gets thrown, toss away this 1701 // activity and try the next one. 1702 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1703 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1704 "resume-exception", true); 1705 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1706 return true; 1707 } 1708 next.stopped = false; 1709 1710 } else { 1711 // Whoops, need to restart this activity! 1712 if (!next.hasBeenLaunched) { 1713 next.hasBeenLaunched = true; 1714 } else { 1715 if (SHOW_APP_STARTING_PREVIEW) { 1716 mWindowManager.setAppStartingWindow( 1717 next.appToken, next.packageName, next.theme, 1718 mService.compatibilityInfoForPackageLocked( 1719 next.info.applicationInfo), 1720 next.nonLocalizedLabel, 1721 next.labelRes, next.icon, next.logo, next.windowFlags, 1722 null, true); 1723 } 1724 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1725 } 1726 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1727 mStackSupervisor.startSpecificActivityLocked(next, true, true, resumeAnimOptions); 1728 } 1729 1730 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1731 return true; 1732 } 1733 1734 private void insertTaskAtTop(TaskRecord task) { 1735 // If this is being moved to the top by another activity or being launched from the home 1736 // activity, set mOnTopOfHome accordingly. 1737 if (isOnHomeDisplay()) { 1738 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1739 final boolean fromHome = lastStack.isHomeStack(); 1740 if (!isHomeStack() && (fromHome || topTask() != task)) { 1741 task.mOnTopOfHome = fromHome; 1742 } 1743 } else { 1744 task.mOnTopOfHome = false; 1745 } 1746 1747 mTaskHistory.remove(task); 1748 // Now put task at top. 1749 int stackNdx = mTaskHistory.size(); 1750 if (!isRelatedToOrCurrentUserLocked(task.userId)) { 1751 // Put non-current user tasks below current user tasks. 1752 while (--stackNdx >= 0) { 1753 if (!isRelatedToOrCurrentUserLocked(mTaskHistory.get(stackNdx).userId)) { 1754 break; 1755 } 1756 } 1757 ++stackNdx; 1758 } 1759 mTaskHistory.add(stackNdx, task); 1760 } 1761 1762 final void startActivityLocked(ActivityRecord r, boolean newTask, 1763 boolean doResume, boolean keepCurTransition, Bundle options) { 1764 TaskRecord rTask = r.task; 1765 final int taskId = rTask.taskId; 1766 if (taskForIdLocked(taskId) == null || newTask) { 1767 // Last activity in task had been removed or ActivityManagerService is reusing task. 1768 // Insert or replace. 1769 // Might not even be in. 1770 insertTaskAtTop(rTask); 1771 mWindowManager.moveTaskToTop(taskId); 1772 } 1773 TaskRecord task = null; 1774 if (!newTask) { 1775 // If starting in an existing task, find where that is... 1776 boolean startIt = true; 1777 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1778 task = mTaskHistory.get(taskNdx); 1779 if (task == r.task) { 1780 // Here it is! Now, if this is not yet visible to the 1781 // user, then just add it without starting; it will 1782 // get started when the user navigates back to it. 1783 if (!startIt) { 1784 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1785 + task, new RuntimeException("here").fillInStackTrace()); 1786 task.addActivityToTop(r); 1787 r.putInHistory(); 1788 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1789 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1790 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1791 r.userId, r.info.configChanges); 1792 if (VALIDATE_TOKENS) { 1793 validateAppTokensLocked(); 1794 } 1795 ActivityOptions.abort(options); 1796 return; 1797 } 1798 break; 1799 } else if (task.numFullscreen > 0) { 1800 startIt = false; 1801 } 1802 } 1803 } 1804 1805 // Place a new activity at top of stack, so it is next to interact 1806 // with the user. 1807 1808 // If we are not placing the new activity frontmost, we do not want 1809 // to deliver the onUserLeaving callback to the actual frontmost 1810 // activity 1811 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1812 mStackSupervisor.mUserLeaving = false; 1813 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1814 "startActivity() behind front, mUserLeaving=false"); 1815 } 1816 1817 task = r.task; 1818 1819 // Slot the activity into the history stack and proceed 1820 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1821 new RuntimeException("here").fillInStackTrace()); 1822 task.addActivityToTop(r); 1823 task.setFrontOfTask(); 1824 1825 r.putInHistory(); 1826 if (!isHomeStack() || numActivities() > 0) { 1827 // We want to show the starting preview window if we are 1828 // switching to a new task, or the next activity's process is 1829 // not currently running. 1830 boolean showStartingIcon = newTask; 1831 ProcessRecord proc = r.app; 1832 if (proc == null) { 1833 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1834 } 1835 if (proc == null || proc.thread == null) { 1836 showStartingIcon = true; 1837 } 1838 if (DEBUG_TRANSITION) Slog.v(TAG, 1839 "Prepare open transition: starting " + r); 1840 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1841 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1842 mNoAnimActivities.add(r); 1843 } else { 1844 mWindowManager.prepareAppTransition(newTask 1845 ? AppTransition.TRANSIT_TASK_OPEN 1846 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1847 mNoAnimActivities.remove(r); 1848 } 1849 r.updateOptionsLocked(options); 1850 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1851 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1852 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1853 r.info.configChanges); 1854 boolean doShow = true; 1855 if (newTask) { 1856 // Even though this activity is starting fresh, we still need 1857 // to reset it to make sure we apply affinities to move any 1858 // existing activities from other tasks in to it. 1859 // If the caller has requested that the target task be 1860 // reset, then do so. 1861 if ((r.intent.getFlags() 1862 &Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1863 resetTaskIfNeededLocked(r, r); 1864 doShow = topRunningNonDelayedActivityLocked(null) == r; 1865 } 1866 } 1867 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1868 // Figure out if we are transitioning from another activity that is 1869 // "has the same starting icon" as the next one. This allows the 1870 // window manager to keep the previous window it had previously 1871 // created, if it still had one. 1872 ActivityRecord prev = mResumedActivity; 1873 if (prev != null) { 1874 // We don't want to reuse the previous starting preview if: 1875 // (1) The current activity is in a different task. 1876 if (prev.task != r.task) { 1877 prev = null; 1878 } 1879 // (2) The current activity is already displayed. 1880 else if (prev.nowVisible) { 1881 prev = null; 1882 } 1883 } 1884 mWindowManager.setAppStartingWindow( 1885 r.appToken, r.packageName, r.theme, 1886 mService.compatibilityInfoForPackageLocked( 1887 r.info.applicationInfo), r.nonLocalizedLabel, 1888 r.labelRes, r.icon, r.logo, r.windowFlags, 1889 prev != null ? prev.appToken : null, showStartingIcon); 1890 r.mStartingWindowShown = true; 1891 } 1892 } else { 1893 // If this is the first activity, don't do any fancy animations, 1894 // because there is nothing for it to animate on top of. 1895 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1896 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1897 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1898 r.info.configChanges); 1899 ActivityOptions.abort(options); 1900 } 1901 if (VALIDATE_TOKENS) { 1902 validateAppTokensLocked(); 1903 } 1904 1905 if (doResume) { 1906 mStackSupervisor.resumeTopActivitiesLocked(); 1907 } 1908 } 1909 1910 final void validateAppTokensLocked() { 1911 mValidateAppTokens.clear(); 1912 mValidateAppTokens.ensureCapacity(numActivities()); 1913 final int numTasks = mTaskHistory.size(); 1914 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1915 TaskRecord task = mTaskHistory.get(taskNdx); 1916 final ArrayList<ActivityRecord> activities = task.mActivities; 1917 if (activities.isEmpty()) { 1918 continue; 1919 } 1920 TaskGroup group = new TaskGroup(); 1921 group.taskId = task.taskId; 1922 mValidateAppTokens.add(group); 1923 final int numActivities = activities.size(); 1924 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1925 final ActivityRecord r = activities.get(activityNdx); 1926 group.tokens.add(r.appToken); 1927 } 1928 } 1929 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1930 } 1931 1932 /** 1933 * Perform a reset of the given task, if needed as part of launching it. 1934 * Returns the new HistoryRecord at the top of the task. 1935 */ 1936 /** 1937 * Helper method for #resetTaskIfNeededLocked. 1938 * We are inside of the task being reset... we'll either finish this activity, push it out 1939 * for another task, or leave it as-is. 1940 * @param task The task containing the Activity (taskTop) that might be reset. 1941 * @param forceReset 1942 * @return An ActivityOptions that needs to be processed. 1943 */ 1944 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1945 ActivityOptions topOptions = null; 1946 1947 int replyChainEnd = -1; 1948 boolean canMoveOptions = true; 1949 1950 // We only do this for activities that are not the root of the task (since if we finish 1951 // the root, we may no longer have the task!). 1952 final ArrayList<ActivityRecord> activities = task.mActivities; 1953 final int numActivities = activities.size(); 1954 for (int i = numActivities - 1; i > 0; --i ) { 1955 ActivityRecord target = activities.get(i); 1956 1957 final int flags = target.info.flags; 1958 final boolean finishOnTaskLaunch = 1959 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1960 final boolean allowTaskReparenting = 1961 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1962 final boolean clearWhenTaskReset = 1963 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 1964 1965 if (!finishOnTaskLaunch 1966 && !clearWhenTaskReset 1967 && target.resultTo != null) { 1968 // If this activity is sending a reply to a previous 1969 // activity, we can't do anything with it now until 1970 // we reach the start of the reply chain. 1971 // XXX note that we are assuming the result is always 1972 // to the previous activity, which is almost always 1973 // the case but we really shouldn't count on. 1974 if (replyChainEnd < 0) { 1975 replyChainEnd = i; 1976 } 1977 } else if (!finishOnTaskLaunch 1978 && !clearWhenTaskReset 1979 && allowTaskReparenting 1980 && target.taskAffinity != null 1981 && !target.taskAffinity.equals(task.affinity)) { 1982 // If this activity has an affinity for another 1983 // task, then we need to move it out of here. We will 1984 // move it as far out of the way as possible, to the 1985 // bottom of the activity stack. This also keeps it 1986 // correctly ordered with any activities we previously 1987 // moved. 1988 final ThumbnailHolder newThumbHolder; 1989 final TaskRecord targetTask; 1990 final ActivityRecord bottom = 1991 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 1992 mTaskHistory.get(0).mActivities.get(0) : null; 1993 if (bottom != null && target.taskAffinity != null 1994 && target.taskAffinity.equals(bottom.task.affinity)) { 1995 // If the activity currently at the bottom has the 1996 // same task affinity as the one we are moving, 1997 // then merge it into the same task. 1998 targetTask = bottom.task; 1999 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2000 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2001 + " out to bottom task " + bottom.task); 2002 } else { 2003 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2004 null, false); 2005 newThumbHolder = targetTask; 2006 targetTask.affinityIntent = target.intent; 2007 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2008 + " out to new task " + target.task); 2009 } 2010 2011 if (clearWhenTaskReset) { 2012 // This is the start of a new sub-task. 2013 if (target.thumbHolder == null) { 2014 target.thumbHolder = new ThumbnailHolder(); 2015 } 2016 } else { 2017 target.thumbHolder = newThumbHolder; 2018 } 2019 2020 final int targetTaskId = targetTask.taskId; 2021 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2022 2023 boolean noOptions = canMoveOptions; 2024 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2025 for (int srcPos = start; srcPos >= i; --srcPos) { 2026 final ActivityRecord p = activities.get(srcPos); 2027 if (p.finishing) { 2028 continue; 2029 } 2030 2031 ThumbnailHolder curThumbHolder = p.thumbHolder; 2032 canMoveOptions = false; 2033 if (noOptions && topOptions == null) { 2034 topOptions = p.takeOptionsLocked(); 2035 if (topOptions != null) { 2036 noOptions = false; 2037 } 2038 } 2039 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2040 + task + " adding to task=" + targetTask 2041 + " Callers=" + Debug.getCallers(4)); 2042 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2043 + " out to target's task " + target.task); 2044 p.setTask(targetTask, curThumbHolder, false); 2045 targetTask.addActivityAtBottom(p); 2046 2047 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2048 } 2049 2050 mWindowManager.moveTaskToBottom(targetTaskId); 2051 if (VALIDATE_TOKENS) { 2052 validateAppTokensLocked(); 2053 } 2054 2055 replyChainEnd = -1; 2056 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2057 // If the activity should just be removed -- either 2058 // because it asks for it, or the task should be 2059 // cleared -- then finish it and anything that is 2060 // part of its reply chain. 2061 int end; 2062 if (clearWhenTaskReset) { 2063 // In this case, we want to finish this activity 2064 // and everything above it, so be sneaky and pretend 2065 // like these are all in the reply chain. 2066 end = numActivities - 1; 2067 } else if (replyChainEnd < 0) { 2068 end = i; 2069 } else { 2070 end = replyChainEnd; 2071 } 2072 boolean noOptions = canMoveOptions; 2073 for (int srcPos = i; srcPos <= end; srcPos++) { 2074 ActivityRecord p = activities.get(srcPos); 2075 if (p.finishing) { 2076 continue; 2077 } 2078 canMoveOptions = false; 2079 if (noOptions && topOptions == null) { 2080 topOptions = p.takeOptionsLocked(); 2081 if (topOptions != null) { 2082 noOptions = false; 2083 } 2084 } 2085 if (DEBUG_TASKS) Slog.w(TAG, 2086 "resetTaskIntendedTask: calling finishActivity on " + p); 2087 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2088 end--; 2089 srcPos--; 2090 } 2091 } 2092 replyChainEnd = -1; 2093 } else { 2094 // If we were in the middle of a chain, well the 2095 // activity that started it all doesn't want anything 2096 // special, so leave it all as-is. 2097 replyChainEnd = -1; 2098 } 2099 } 2100 2101 return topOptions; 2102 } 2103 2104 /** 2105 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2106 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2107 * @param affinityTask The task we are looking for an affinity to. 2108 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2109 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2110 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2111 */ 2112 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2113 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2114 int replyChainEnd = -1; 2115 final int taskId = task.taskId; 2116 final String taskAffinity = task.affinity; 2117 2118 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2119 final int numActivities = activities.size(); 2120 // Do not operate on the root Activity. 2121 for (int i = numActivities - 1; i > 0; --i) { 2122 ActivityRecord target = activities.get(i); 2123 2124 final int flags = target.info.flags; 2125 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2126 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2127 2128 if (target.resultTo != null) { 2129 // If this activity is sending a reply to a previous 2130 // activity, we can't do anything with it now until 2131 // we reach the start of the reply chain. 2132 // XXX note that we are assuming the result is always 2133 // to the previous activity, which is almost always 2134 // the case but we really shouldn't count on. 2135 if (replyChainEnd < 0) { 2136 replyChainEnd = i; 2137 } 2138 } else if (topTaskIsHigher 2139 && allowTaskReparenting 2140 && taskAffinity != null 2141 && taskAffinity.equals(target.taskAffinity)) { 2142 // This activity has an affinity for our task. Either remove it if we are 2143 // clearing or move it over to our task. Note that 2144 // we currently punt on the case where we are resetting a 2145 // task that is not at the top but who has activities above 2146 // with an affinity to it... this is really not a normal 2147 // case, and we will need to later pull that task to the front 2148 // and usually at that point we will do the reset and pick 2149 // up those remaining activities. (This only happens if 2150 // someone starts an activity in a new task from an activity 2151 // in a task that is not currently on top.) 2152 if (forceReset || finishOnTaskLaunch) { 2153 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2154 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2155 for (int srcPos = start; srcPos >= i; --srcPos) { 2156 final ActivityRecord p = activities.get(srcPos); 2157 if (p.finishing) { 2158 continue; 2159 } 2160 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2161 } 2162 } else { 2163 if (taskInsertionPoint < 0) { 2164 taskInsertionPoint = task.mActivities.size(); 2165 2166 } 2167 2168 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2169 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2170 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2171 for (int srcPos = start; srcPos >= i; --srcPos) { 2172 final ActivityRecord p = activities.get(srcPos); 2173 p.setTask(task, null, false); 2174 task.addActivityAtIndex(taskInsertionPoint, p); 2175 2176 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2177 + " to stack at " + task, 2178 new RuntimeException("here").fillInStackTrace()); 2179 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2180 + " in to resetting task " + task); 2181 mWindowManager.setAppGroupId(p.appToken, taskId); 2182 } 2183 mWindowManager.moveTaskToTop(taskId); 2184 if (VALIDATE_TOKENS) { 2185 validateAppTokensLocked(); 2186 } 2187 2188 // Now we've moved it in to place... but what if this is 2189 // a singleTop activity and we have put it on top of another 2190 // instance of the same activity? Then we drop the instance 2191 // below so it remains singleTop. 2192 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2193 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2194 int targetNdx = taskActivities.indexOf(target); 2195 if (targetNdx > 0) { 2196 ActivityRecord p = taskActivities.get(targetNdx - 1); 2197 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2198 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2199 false); 2200 } 2201 } 2202 } 2203 } 2204 2205 replyChainEnd = -1; 2206 } 2207 } 2208 return taskInsertionPoint; 2209 } 2210 2211 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2212 ActivityRecord newActivity) { 2213 boolean forceReset = 2214 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2215 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2216 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2217 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2218 forceReset = true; 2219 } 2220 } 2221 2222 final TaskRecord task = taskTop.task; 2223 2224 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2225 * for remaining tasks. Used for later tasks to reparent to task. */ 2226 boolean taskFound = false; 2227 2228 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2229 ActivityOptions topOptions = null; 2230 2231 // Preserve the location for reparenting in the new task. 2232 int reparentInsertionPoint = -1; 2233 2234 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2235 final TaskRecord targetTask = mTaskHistory.get(i); 2236 2237 if (targetTask == task) { 2238 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2239 taskFound = true; 2240 } else { 2241 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2242 taskFound, forceReset, reparentInsertionPoint); 2243 } 2244 } 2245 2246 int taskNdx = mTaskHistory.indexOf(task); 2247 do { 2248 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2249 } while (taskTop == null && taskNdx >= 0); 2250 2251 if (topOptions != null) { 2252 // If we got some ActivityOptions from an activity on top that 2253 // was removed from the task, propagate them to the new real top. 2254 if (taskTop != null) { 2255 taskTop.updateOptionsLocked(topOptions); 2256 } else { 2257 topOptions.abort(); 2258 } 2259 } 2260 2261 return taskTop; 2262 } 2263 2264 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2265 String resultWho, int requestCode, int resultCode, Intent data) { 2266 2267 if (callingUid > 0) { 2268 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2269 data, r.getUriPermissionsLocked()); 2270 } 2271 2272 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2273 + " : who=" + resultWho + " req=" + requestCode 2274 + " res=" + resultCode + " data=" + data); 2275 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2276 try { 2277 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2278 list.add(new ResultInfo(resultWho, requestCode, 2279 resultCode, data)); 2280 r.app.thread.scheduleSendResult(r.appToken, list); 2281 return; 2282 } catch (Exception e) { 2283 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2284 } 2285 } 2286 2287 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2288 } 2289 2290 private void adjustFocusedActivityLocked(ActivityRecord r) { 2291 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2292 ActivityRecord next = topRunningActivityLocked(null); 2293 if (next != r) { 2294 final TaskRecord task = r.task; 2295 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2296 mStackSupervisor.moveHomeToTop(); 2297 } 2298 } 2299 mService.setFocusedActivityLocked(mStackSupervisor.topRunningActivityLocked()); 2300 } 2301 } 2302 2303 final void stopActivityLocked(ActivityRecord r) { 2304 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2305 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2306 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2307 if (!r.finishing) { 2308 if (!mService.mSleeping) { 2309 if (DEBUG_STATES) { 2310 Slog.d(TAG, "no-history finish of " + r); 2311 } 2312 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2313 "no-history", false); 2314 } else { 2315 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2316 + " on stop because we're just sleeping"); 2317 } 2318 } 2319 } 2320 2321 if (r.app != null && r.app.thread != null) { 2322 adjustFocusedActivityLocked(r); 2323 r.resumeKeyDispatchingLocked(); 2324 try { 2325 r.stopped = false; 2326 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2327 + " (stop requested)"); 2328 r.state = ActivityState.STOPPING; 2329 if (DEBUG_VISBILITY) Slog.v( 2330 TAG, "Stopping visible=" + r.visible + " for " + r); 2331 if (!r.visible) { 2332 mWindowManager.setAppVisibility(r.appToken, false); 2333 } 2334 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2335 if (mService.isSleepingOrShuttingDown()) { 2336 r.setSleeping(true); 2337 } 2338 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2339 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2340 } catch (Exception e) { 2341 // Maybe just ignore exceptions here... if the process 2342 // has crashed, our death notification will clean things 2343 // up. 2344 Slog.w(TAG, "Exception thrown during pause", e); 2345 // Just in case, assume it to be stopped. 2346 r.stopped = true; 2347 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2348 r.state = ActivityState.STOPPED; 2349 if (r.configDestroy) { 2350 destroyActivityLocked(r, true, false, "stop-except"); 2351 } 2352 } 2353 } 2354 } 2355 2356 /** 2357 * @return Returns true if the activity is being finished, false if for 2358 * some reason it is being left as-is. 2359 */ 2360 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2361 Intent resultData, String reason, boolean oomAdj) { 2362 ActivityRecord r = isInStackLocked(token); 2363 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2364 TAG, "Finishing activity token=" + token + " r=" 2365 + ", result=" + resultCode + ", data=" + resultData 2366 + ", reason=" + reason); 2367 if (r == null) { 2368 return false; 2369 } 2370 2371 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2372 return true; 2373 } 2374 2375 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2376 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2377 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2378 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2379 ActivityRecord r = activities.get(activityNdx); 2380 if (r.resultTo == self && r.requestCode == requestCode) { 2381 if ((r.resultWho == null && resultWho == null) || 2382 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2383 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2384 false); 2385 } 2386 } 2387 } 2388 } 2389 mService.updateOomAdjLocked(); 2390 } 2391 2392 final void finishTopRunningActivityLocked(ProcessRecord app) { 2393 ActivityRecord r = topRunningActivityLocked(null); 2394 if (r != null && r.app == app) { 2395 // If the top running activity is from this crashing 2396 // process, then terminate it to avoid getting in a loop. 2397 Slog.w(TAG, " Force finishing activity " 2398 + r.intent.getComponent().flattenToShortString()); 2399 int taskNdx = mTaskHistory.indexOf(r.task); 2400 int activityNdx = r.task.mActivities.indexOf(r); 2401 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2402 // Also terminate any activities below it that aren't yet 2403 // stopped, to avoid a situation where one will get 2404 // re-start our crashing activity once it gets resumed again. 2405 --activityNdx; 2406 if (activityNdx < 0) { 2407 do { 2408 --taskNdx; 2409 if (taskNdx < 0) { 2410 break; 2411 } 2412 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2413 } while (activityNdx < 0); 2414 } 2415 if (activityNdx >= 0) { 2416 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2417 if (r.state == ActivityState.RESUMED 2418 || r.state == ActivityState.PAUSING 2419 || r.state == ActivityState.PAUSED) { 2420 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2421 Slog.w(TAG, " Force finishing activity " 2422 + r.intent.getComponent().flattenToShortString()); 2423 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2424 } 2425 } 2426 } 2427 } 2428 } 2429 2430 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2431 ArrayList<ActivityRecord> activities = r.task.mActivities; 2432 for (int index = activities.indexOf(r); index >= 0; --index) { 2433 ActivityRecord cur = activities.get(index); 2434 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2435 break; 2436 } 2437 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2438 } 2439 return true; 2440 } 2441 2442 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2443 // send the result 2444 ActivityRecord resultTo = r.resultTo; 2445 if (resultTo != null) { 2446 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2447 + " who=" + r.resultWho + " req=" + r.requestCode 2448 + " res=" + resultCode + " data=" + resultData); 2449 if (r.info.applicationInfo.uid > 0) { 2450 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2451 resultTo.packageName, resultData, 2452 resultTo.getUriPermissionsLocked()); 2453 } 2454 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2455 resultData); 2456 r.resultTo = null; 2457 } 2458 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2459 2460 // Make sure this HistoryRecord is not holding on to other resources, 2461 // because clients have remote IPC references to this object so we 2462 // can't assume that will go away and want to avoid circular IPC refs. 2463 r.results = null; 2464 r.pendingResults = null; 2465 r.newIntents = null; 2466 r.icicle = null; 2467 } 2468 2469 /** 2470 * @return Returns true if this activity has been removed from the history 2471 * list, or false if it is still in the list and will be removed later. 2472 */ 2473 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2474 String reason, boolean oomAdj) { 2475 if (r.finishing) { 2476 Slog.w(TAG, "Duplicate finish request for " + r); 2477 return false; 2478 } 2479 2480 r.makeFinishing(); 2481 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2482 r.userId, System.identityHashCode(r), 2483 r.task.taskId, r.shortComponentName, reason); 2484 final ArrayList<ActivityRecord> activities = r.task.mActivities; 2485 final int index = activities.indexOf(r); 2486 if (index < (activities.size() - 1)) { 2487 r.task.setFrontOfTask(); 2488 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2489 // If the caller asked that this activity (and all above it) 2490 // be cleared when the task is reset, don't lose that information, 2491 // but propagate it up to the next activity. 2492 ActivityRecord next = activities.get(index+1); 2493 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2494 } 2495 } 2496 2497 r.pauseKeyDispatchingLocked(); 2498 2499 adjustFocusedActivityLocked(r); 2500 2501 finishActivityResultsLocked(r, resultCode, resultData); 2502 2503 if (!mService.mPendingThumbnails.isEmpty()) { 2504 // There are clients waiting to receive thumbnails so, in case 2505 // this is an activity that someone is waiting for, add it 2506 // to the pending list so we can correctly update the clients. 2507 mStackSupervisor.mCancelledThumbnails.add(r); 2508 } 2509 2510 if (mResumedActivity == r) { 2511 boolean endTask = index <= 0; 2512 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2513 "Prepare close transition: finishing " + r); 2514 mWindowManager.prepareAppTransition(endTask 2515 ? AppTransition.TRANSIT_TASK_CLOSE 2516 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2517 2518 // Tell window manager to prepare for this one to be removed. 2519 mWindowManager.setAppVisibility(r.appToken, false); 2520 2521 if (mPausingActivity == null) { 2522 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2523 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2524 startPausingLocked(false, false); 2525 } 2526 2527 } else if (r.state != ActivityState.PAUSING) { 2528 // If the activity is PAUSING, we will complete the finish once 2529 // it is done pausing; else we can just directly finish it here. 2530 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2531 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2532 } else { 2533 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2534 } 2535 2536 return false; 2537 } 2538 2539 static final int FINISH_IMMEDIATELY = 0; 2540 static final int FINISH_AFTER_PAUSE = 1; 2541 static final int FINISH_AFTER_VISIBLE = 2; 2542 2543 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2544 // First things first: if this activity is currently visible, 2545 // and the resumed activity is not yet visible, then hold off on 2546 // finishing until the resumed one becomes visible. 2547 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2548 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2549 mStackSupervisor.mStoppingActivities.add(r); 2550 if (mStackSupervisor.mStoppingActivities.size() > 3 2551 || r.frontOfTask && mTaskHistory.size() <= 1) { 2552 // If we already have a few activities waiting to stop, 2553 // then give up on things going idle and start clearing 2554 // them out. Or if r is the last of activity of the last task the stack 2555 // will be empty and must be cleared immediately. 2556 mStackSupervisor.scheduleIdleLocked(); 2557 } else { 2558 mStackSupervisor.checkReadyForSleepLocked(); 2559 } 2560 } 2561 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2562 + " (finish requested)"); 2563 r.state = ActivityState.STOPPING; 2564 if (oomAdj) { 2565 mService.updateOomAdjLocked(); 2566 } 2567 return r; 2568 } 2569 2570 // make sure the record is cleaned out of other places. 2571 mStackSupervisor.mStoppingActivities.remove(r); 2572 mStackSupervisor.mGoingToSleepActivities.remove(r); 2573 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2574 if (mResumedActivity == r) { 2575 mResumedActivity = null; 2576 } 2577 final ActivityState prevState = r.state; 2578 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2579 r.state = ActivityState.FINISHING; 2580 2581 if (mode == FINISH_IMMEDIATELY 2582 || prevState == ActivityState.STOPPED 2583 || prevState == ActivityState.INITIALIZING) { 2584 // If this activity is already stopped, we can just finish 2585 // it right now. 2586 boolean activityRemoved = destroyActivityLocked(r, true, 2587 oomAdj, "finish-imm"); 2588 if (activityRemoved) { 2589 mStackSupervisor.resumeTopActivitiesLocked(); 2590 } 2591 return activityRemoved ? null : r; 2592 } 2593 2594 // Need to go through the full pause cycle to get this 2595 // activity into the stopped state and then finish it. 2596 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2597 mStackSupervisor.mFinishingActivities.add(r); 2598 r.resumeKeyDispatchingLocked(); 2599 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2600 return r; 2601 } 2602 2603 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2604 Intent resultData) { 2605 final ActivityRecord srec = ActivityRecord.forToken(token); 2606 final TaskRecord task = srec.task; 2607 final ArrayList<ActivityRecord> activities = task.mActivities; 2608 final int start = activities.indexOf(srec); 2609 if (!mTaskHistory.contains(task) || (start < 0)) { 2610 return false; 2611 } 2612 int finishTo = start - 1; 2613 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2614 boolean foundParentInTask = false; 2615 final ComponentName dest = destIntent.getComponent(); 2616 if (start > 0 && dest != null) { 2617 for (int i = finishTo; i >= 0; i--) { 2618 ActivityRecord r = activities.get(i); 2619 if (r.info.packageName.equals(dest.getPackageName()) && 2620 r.info.name.equals(dest.getClassName())) { 2621 finishTo = i; 2622 parent = r; 2623 foundParentInTask = true; 2624 break; 2625 } 2626 } 2627 } 2628 2629 IActivityController controller = mService.mController; 2630 if (controller != null) { 2631 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2632 if (next != null) { 2633 // ask watcher if this is allowed 2634 boolean resumeOK = true; 2635 try { 2636 resumeOK = controller.activityResuming(next.packageName); 2637 } catch (RemoteException e) { 2638 mService.mController = null; 2639 Watchdog.getInstance().setActivityController(null); 2640 } 2641 2642 if (!resumeOK) { 2643 return false; 2644 } 2645 } 2646 } 2647 final long origId = Binder.clearCallingIdentity(); 2648 for (int i = start; i > finishTo; i--) { 2649 ActivityRecord r = activities.get(i); 2650 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2651 // Only return the supplied result for the first activity finished 2652 resultCode = Activity.RESULT_CANCELED; 2653 resultData = null; 2654 } 2655 2656 if (parent != null && foundParentInTask) { 2657 final int parentLaunchMode = parent.info.launchMode; 2658 final int destIntentFlags = destIntent.getFlags(); 2659 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2660 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2661 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2662 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2663 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2664 } else { 2665 try { 2666 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2667 destIntent.getComponent(), 0, srec.userId); 2668 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2669 null, aInfo, parent.appToken, null, 2670 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2671 0, null, true, null, null); 2672 foundParentInTask = res == ActivityManager.START_SUCCESS; 2673 } catch (RemoteException e) { 2674 foundParentInTask = false; 2675 } 2676 requestFinishActivityLocked(parent.appToken, resultCode, 2677 resultData, "navigate-up", true); 2678 } 2679 } 2680 Binder.restoreCallingIdentity(origId); 2681 return foundParentInTask; 2682 } 2683 /** 2684 * Perform the common clean-up of an activity record. This is called both 2685 * as part of destroyActivityLocked() (when destroying the client-side 2686 * representation) and cleaning things up as a result of its hosting 2687 * processing going away, in which case there is no remaining client-side 2688 * state to destroy so only the cleanup here is needed. 2689 */ 2690 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2691 boolean setState) { 2692 if (mResumedActivity == r) { 2693 mResumedActivity = null; 2694 } 2695 if (mService.mFocusedActivity == r) { 2696 mService.mFocusedActivity = null; 2697 } 2698 2699 r.configDestroy = false; 2700 r.frozenBeforeDestroy = false; 2701 2702 if (setState) { 2703 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2704 r.state = ActivityState.DESTROYED; 2705 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2706 r.app = null; 2707 } 2708 2709 // Make sure this record is no longer in the pending finishes list. 2710 // This could happen, for example, if we are trimming activities 2711 // down to the max limit while they are still waiting to finish. 2712 mStackSupervisor.mFinishingActivities.remove(r); 2713 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2714 2715 // Remove any pending results. 2716 if (r.finishing && r.pendingResults != null) { 2717 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2718 PendingIntentRecord rec = apr.get(); 2719 if (rec != null) { 2720 mService.cancelIntentSenderLocked(rec, false); 2721 } 2722 } 2723 r.pendingResults = null; 2724 } 2725 2726 if (cleanServices) { 2727 cleanUpActivityServicesLocked(r); 2728 } 2729 2730 if (!mService.mPendingThumbnails.isEmpty()) { 2731 // There are clients waiting to receive thumbnails so, in case 2732 // this is an activity that someone is waiting for, add it 2733 // to the pending list so we can correctly update the clients. 2734 mStackSupervisor.mCancelledThumbnails.add(r); 2735 } 2736 2737 // Get rid of any pending idle timeouts. 2738 removeTimeoutsForActivityLocked(r); 2739 } 2740 2741 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2742 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2743 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2744 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2745 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2746 r.finishLaunchTickingLocked(); 2747 } 2748 2749 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2750 mStackSupervisor.removeChildActivityContainers(r); 2751 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2752 r.makeFinishing(); 2753 if (DEBUG_ADD_REMOVE) { 2754 RuntimeException here = new RuntimeException("here"); 2755 here.fillInStackTrace(); 2756 Slog.i(TAG, "Removing activity " + r + " from stack"); 2757 } 2758 r.takeFromHistory(); 2759 removeTimeoutsForActivityLocked(r); 2760 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2761 r.state = ActivityState.DESTROYED; 2762 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2763 r.app = null; 2764 mWindowManager.removeAppToken(r.appToken); 2765 if (VALIDATE_TOKENS) { 2766 validateAppTokensLocked(); 2767 } 2768 final TaskRecord task = r.task; 2769 if (task != null && task.removeActivity(r)) { 2770 if (DEBUG_STACK) Slog.i(TAG, 2771 "removeActivityFromHistoryLocked: last activity removed from " + this); 2772 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2773 mStackSupervisor.moveHomeToTop(); 2774 } 2775 removeTask(task); 2776 } 2777 cleanUpActivityServicesLocked(r); 2778 r.removeUriPermissionsLocked(); 2779 } 2780 2781 /** 2782 * Perform clean-up of service connections in an activity record. 2783 */ 2784 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2785 // Throw away any services that have been bound by this activity. 2786 if (r.connections != null) { 2787 Iterator<ConnectionRecord> it = r.connections.iterator(); 2788 while (it.hasNext()) { 2789 ConnectionRecord c = it.next(); 2790 mService.mServices.removeConnectionLocked(c, null, r); 2791 } 2792 r.connections = null; 2793 } 2794 } 2795 2796 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2797 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2798 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2799 mHandler.sendMessage(msg); 2800 } 2801 2802 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2803 boolean lastIsOpaque = false; 2804 boolean activityRemoved = false; 2805 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2806 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2807 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2808 final ActivityRecord r = activities.get(activityNdx); 2809 if (r.finishing) { 2810 continue; 2811 } 2812 if (r.fullscreen) { 2813 lastIsOpaque = true; 2814 } 2815 if (owner != null && r.app != owner) { 2816 continue; 2817 } 2818 if (!lastIsOpaque) { 2819 continue; 2820 } 2821 // We can destroy this one if we have its icicle saved and 2822 // it is not in the process of pausing/stopping/finishing. 2823 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2824 && r.haveState && !r.visible && r.stopped 2825 && r.state != ActivityState.DESTROYING 2826 && r.state != ActivityState.DESTROYED) { 2827 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2828 + " resumed=" + mResumedActivity 2829 + " pausing=" + mPausingActivity); 2830 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2831 activityRemoved = true; 2832 } 2833 } 2834 } 2835 } 2836 if (activityRemoved) { 2837 mStackSupervisor.resumeTopActivitiesLocked(); 2838 2839 } 2840 } 2841 2842 /** 2843 * Destroy the current CLIENT SIDE instance of an activity. This may be 2844 * called both when actually finishing an activity, or when performing 2845 * a configuration switch where we destroy the current client-side object 2846 * but then create a new client-side object for this same HistoryRecord. 2847 */ 2848 final boolean destroyActivityLocked(ActivityRecord r, 2849 boolean removeFromApp, boolean oomAdj, String reason) { 2850 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2851 TAG, "Removing activity from " + reason + ": token=" + r 2852 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2853 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2854 r.userId, System.identityHashCode(r), 2855 r.task.taskId, r.shortComponentName, reason); 2856 2857 boolean removedFromHistory = false; 2858 2859 cleanUpActivityLocked(r, false, false); 2860 2861 final boolean hadApp = r.app != null; 2862 2863 if (hadApp) { 2864 if (removeFromApp) { 2865 r.app.activities.remove(r); 2866 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2867 mService.mHeavyWeightProcess = null; 2868 mService.mHandler.sendEmptyMessage( 2869 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2870 } 2871 if (r.app.activities.isEmpty()) { 2872 // No longer have activities, so update LRU list and oom adj. 2873 mService.updateLruProcessLocked(r.app, false, null); 2874 mService.updateOomAdjLocked(); 2875 } 2876 } 2877 2878 boolean skipDestroy = false; 2879 2880 try { 2881 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2882 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2883 r.configChangeFlags); 2884 } catch (Exception e) { 2885 // We can just ignore exceptions here... if the process 2886 // has crashed, our death notification will clean things 2887 // up. 2888 //Slog.w(TAG, "Exception thrown during finish", e); 2889 if (r.finishing) { 2890 removeActivityFromHistoryLocked(r); 2891 removedFromHistory = true; 2892 skipDestroy = true; 2893 } 2894 } 2895 2896 r.nowVisible = false; 2897 2898 // If the activity is finishing, we need to wait on removing it 2899 // from the list to give it a chance to do its cleanup. During 2900 // that time it may make calls back with its token so we need to 2901 // be able to find it on the list and so we don't want to remove 2902 // it from the list yet. Otherwise, we can just immediately put 2903 // it in the destroyed state since we are not removing it from the 2904 // list. 2905 if (r.finishing && !skipDestroy) { 2906 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2907 + " (destroy requested)"); 2908 r.state = ActivityState.DESTROYING; 2909 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2910 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2911 } else { 2912 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2913 r.state = ActivityState.DESTROYED; 2914 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2915 r.app = null; 2916 } 2917 } else { 2918 // remove this record from the history. 2919 if (r.finishing) { 2920 removeActivityFromHistoryLocked(r); 2921 removedFromHistory = true; 2922 } else { 2923 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2924 r.state = ActivityState.DESTROYED; 2925 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2926 r.app = null; 2927 } 2928 } 2929 2930 r.configChangeFlags = 0; 2931 2932 if (!mLRUActivities.remove(r) && hadApp) { 2933 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2934 } 2935 2936 return removedFromHistory; 2937 } 2938 2939 final void activityDestroyedLocked(IBinder token) { 2940 final long origId = Binder.clearCallingIdentity(); 2941 try { 2942 ActivityRecord r = ActivityRecord.forToken(token); 2943 if (r != null) { 2944 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2945 } 2946 2947 if (isInStackLocked(token) != null) { 2948 if (r.state == ActivityState.DESTROYING) { 2949 cleanUpActivityLocked(r, true, false); 2950 removeActivityFromHistoryLocked(r); 2951 } 2952 } 2953 mStackSupervisor.resumeTopActivitiesLocked(); 2954 } finally { 2955 Binder.restoreCallingIdentity(origId); 2956 } 2957 } 2958 2959 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 2960 ProcessRecord app, String listName) { 2961 int i = list.size(); 2962 if (DEBUG_CLEANUP) Slog.v( 2963 TAG, "Removing app " + app + " from list " + listName 2964 + " with " + i + " entries"); 2965 while (i > 0) { 2966 i--; 2967 ActivityRecord r = list.get(i); 2968 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 2969 if (r.app == app) { 2970 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 2971 list.remove(i); 2972 removeTimeoutsForActivityLocked(r); 2973 } 2974 } 2975 } 2976 2977 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 2978 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 2979 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 2980 "mStoppingActivities"); 2981 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 2982 "mGoingToSleepActivities"); 2983 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 2984 "mWaitingVisibleActivities"); 2985 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 2986 "mFinishingActivities"); 2987 2988 boolean hasVisibleActivities = false; 2989 2990 // Clean out the history list. 2991 int i = numActivities(); 2992 if (DEBUG_CLEANUP) Slog.v( 2993 TAG, "Removing app " + app + " from history with " + i + " entries"); 2994 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2995 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2996 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2997 final ActivityRecord r = activities.get(activityNdx); 2998 --i; 2999 if (DEBUG_CLEANUP) Slog.v( 3000 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3001 if (r.app == app) { 3002 boolean remove; 3003 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3004 // Don't currently have state for the activity, or 3005 // it is finishing -- always remove it. 3006 remove = true; 3007 } else if (r.launchCount > 2 && 3008 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3009 // We have launched this activity too many times since it was 3010 // able to run, so give up and remove it. 3011 remove = true; 3012 } else { 3013 // The process may be gone, but the activity lives on! 3014 remove = false; 3015 } 3016 if (remove) { 3017 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3018 RuntimeException here = new RuntimeException("here"); 3019 here.fillInStackTrace(); 3020 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3021 + ": haveState=" + r.haveState 3022 + " stateNotNeeded=" + r.stateNotNeeded 3023 + " finishing=" + r.finishing 3024 + " state=" + r.state, here); 3025 } 3026 if (!r.finishing) { 3027 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3028 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3029 r.userId, System.identityHashCode(r), 3030 r.task.taskId, r.shortComponentName, 3031 "proc died without state saved"); 3032 if (r.state == ActivityState.RESUMED) { 3033 mService.updateUsageStats(r, false); 3034 } 3035 } 3036 removeActivityFromHistoryLocked(r); 3037 3038 } else { 3039 // We have the current state for this activity, so 3040 // it can be restarted later when needed. 3041 if (localLOGV) Slog.v( 3042 TAG, "Keeping entry, setting app to null"); 3043 if (r.visible) { 3044 hasVisibleActivities = true; 3045 } 3046 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3047 + r); 3048 r.app = null; 3049 r.nowVisible = false; 3050 if (!r.haveState) { 3051 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3052 "App died, clearing saved state of " + r); 3053 r.icicle = null; 3054 } 3055 } 3056 3057 cleanUpActivityLocked(r, true, true); 3058 } 3059 } 3060 } 3061 3062 return hasVisibleActivities; 3063 } 3064 3065 final void updateTransitLocked(int transit, Bundle options) { 3066 if (options != null) { 3067 ActivityRecord r = topRunningActivityLocked(null); 3068 if (r != null && r.state != ActivityState.RESUMED) { 3069 r.updateOptionsLocked(options); 3070 } else { 3071 ActivityOptions.abort(options); 3072 } 3073 } 3074 mWindowManager.prepareAppTransition(transit, false); 3075 } 3076 3077 void moveHomeTaskToTop() { 3078 final int top = mTaskHistory.size() - 1; 3079 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3080 final TaskRecord task = mTaskHistory.get(taskNdx); 3081 if (task.isHomeTask()) { 3082 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3083 mTaskHistory.remove(taskNdx); 3084 mTaskHistory.add(top, task); 3085 mWindowManager.moveTaskToTop(task.taskId); 3086 return; 3087 } 3088 } 3089 } 3090 3091 final boolean findTaskToMoveToFrontLocked(int taskId, int flags, Bundle options) { 3092 final TaskRecord task = taskForIdLocked(taskId); 3093 if (task != null) { 3094 if ((flags & ActivityManager.MOVE_TASK_NO_USER_ACTION) == 0) { 3095 mStackSupervisor.mUserLeaving = true; 3096 } 3097 if ((flags & ActivityManager.MOVE_TASK_WITH_HOME) != 0) { 3098 // Caller wants the home activity moved with it. To accomplish this, 3099 // we'll just indicate that this task returns to the home task. 3100 task.mOnTopOfHome = true; 3101 } 3102 moveTaskToFrontLocked(task, null, options); 3103 return true; 3104 } 3105 return false; 3106 } 3107 3108 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3109 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3110 3111 final int numTasks = mTaskHistory.size(); 3112 final int index = mTaskHistory.indexOf(tr); 3113 if (numTasks == 0 || index < 0) { 3114 // nothing to do! 3115 if (reason != null && 3116 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3117 ActivityOptions.abort(options); 3118 } else { 3119 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3120 } 3121 return; 3122 } 3123 3124 moveToFront(); 3125 3126 // Shift all activities with this task up to the top 3127 // of the stack, keeping them in the same internal order. 3128 insertTaskAtTop(tr); 3129 3130 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3131 if (reason != null && 3132 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3133 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3134 ActivityRecord r = topRunningActivityLocked(null); 3135 if (r != null) { 3136 mNoAnimActivities.add(r); 3137 } 3138 ActivityOptions.abort(options); 3139 } else { 3140 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3141 } 3142 3143 mWindowManager.moveTaskToTop(tr.taskId); 3144 3145 mStackSupervisor.resumeTopActivitiesLocked(); 3146 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3147 3148 if (VALIDATE_TOKENS) { 3149 validateAppTokensLocked(); 3150 } 3151 } 3152 3153 /** 3154 * Worker method for rearranging history stack. Implements the function of moving all 3155 * activities for a specific task (gathering them if disjoint) into a single group at the 3156 * bottom of the stack. 3157 * 3158 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3159 * to premeptively cancel the move. 3160 * 3161 * @param taskId The taskId to collect and move to the bottom. 3162 * @return Returns true if the move completed, false if not. 3163 */ 3164 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3165 Slog.i(TAG, "moveTaskToBack: " + taskId); 3166 3167 // If we have a watcher, preflight the move before committing to it. First check 3168 // for *other* available tasks, but if none are available, then try again allowing the 3169 // current task to be selected. 3170 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3171 ActivityRecord next = topRunningActivityLocked(null, taskId); 3172 if (next == null) { 3173 next = topRunningActivityLocked(null, 0); 3174 } 3175 if (next != null) { 3176 // ask watcher if this is allowed 3177 boolean moveOK = true; 3178 try { 3179 moveOK = mService.mController.activityResuming(next.packageName); 3180 } catch (RemoteException e) { 3181 mService.mController = null; 3182 Watchdog.getInstance().setActivityController(null); 3183 } 3184 if (!moveOK) { 3185 return false; 3186 } 3187 } 3188 } 3189 3190 if (DEBUG_TRANSITION) Slog.v(TAG, 3191 "Prepare to back transition: task=" + taskId); 3192 3193 final TaskRecord tr = taskForIdLocked(taskId); 3194 if (tr == null) { 3195 return false; 3196 } 3197 3198 mTaskHistory.remove(tr); 3199 mTaskHistory.add(0, tr); 3200 3201 // There is an assumption that moving a task to the back moves it behind the home activity. 3202 // We make sure here that some activity in the stack will launch home. 3203 ActivityRecord lastActivity = null; 3204 int numTasks = mTaskHistory.size(); 3205 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3206 final TaskRecord task = mTaskHistory.get(taskNdx); 3207 if (task.mOnTopOfHome) { 3208 break; 3209 } 3210 if (taskNdx == 1) { 3211 // Set the last task before tr to go to home. 3212 task.mOnTopOfHome = true; 3213 } 3214 } 3215 3216 if (reason != null && 3217 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3218 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3219 ActivityRecord r = topRunningActivityLocked(null); 3220 if (r != null) { 3221 mNoAnimActivities.add(r); 3222 } 3223 } else { 3224 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3225 } 3226 mWindowManager.moveTaskToBottom(taskId); 3227 3228 if (VALIDATE_TOKENS) { 3229 validateAppTokensLocked(); 3230 } 3231 3232 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3233 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3234 tr.mOnTopOfHome = false; 3235 return mStackSupervisor.resumeHomeActivity(null); 3236 } 3237 3238 mStackSupervisor.resumeTopActivitiesLocked(); 3239 return true; 3240 } 3241 3242 static final void logStartActivity(int tag, ActivityRecord r, 3243 TaskRecord task) { 3244 final Uri data = r.intent.getData(); 3245 final String strData = data != null ? data.toSafeString() : null; 3246 3247 EventLog.writeEvent(tag, 3248 r.userId, System.identityHashCode(r), task.taskId, 3249 r.shortComponentName, r.intent.getAction(), 3250 r.intent.getType(), strData, r.intent.getFlags()); 3251 } 3252 3253 /** 3254 * Make sure the given activity matches the current configuration. Returns 3255 * false if the activity had to be destroyed. Returns true if the 3256 * configuration is the same, or the activity will remain running as-is 3257 * for whatever reason. Ensures the HistoryRecord is updated with the 3258 * correct configuration and all other bookkeeping is handled. 3259 */ 3260 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3261 int globalChanges) { 3262 if (mConfigWillChange) { 3263 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3264 "Skipping config check (will change): " + r); 3265 return true; 3266 } 3267 3268 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3269 "Ensuring correct configuration: " + r); 3270 3271 // Short circuit: if the two configurations are the exact same 3272 // object (the common case), then there is nothing to do. 3273 Configuration newConfig = mService.mConfiguration; 3274 if (r.configuration == newConfig && !r.forceNewConfig) { 3275 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3276 "Configuration unchanged in " + r); 3277 return true; 3278 } 3279 3280 // We don't worry about activities that are finishing. 3281 if (r.finishing) { 3282 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3283 "Configuration doesn't matter in finishing " + r); 3284 r.stopFreezingScreenLocked(false); 3285 return true; 3286 } 3287 3288 // Okay we now are going to make this activity have the new config. 3289 // But then we need to figure out how it needs to deal with that. 3290 Configuration oldConfig = r.configuration; 3291 r.configuration = newConfig; 3292 3293 // Determine what has changed. May be nothing, if this is a config 3294 // that has come back from the app after going idle. In that case 3295 // we just want to leave the official config object now in the 3296 // activity and do nothing else. 3297 final int changes = oldConfig.diff(newConfig); 3298 if (changes == 0 && !r.forceNewConfig) { 3299 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3300 "Configuration no differences in " + r); 3301 return true; 3302 } 3303 3304 // If the activity isn't currently running, just leave the new 3305 // configuration and it will pick that up next time it starts. 3306 if (r.app == null || r.app.thread == null) { 3307 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3308 "Configuration doesn't matter not running " + r); 3309 r.stopFreezingScreenLocked(false); 3310 r.forceNewConfig = false; 3311 return true; 3312 } 3313 3314 // Figure out how to handle the changes between the configurations. 3315 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3316 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3317 + Integer.toHexString(changes) + ", handles=0x" 3318 + Integer.toHexString(r.info.getRealConfigChanged()) 3319 + ", newConfig=" + newConfig); 3320 } 3321 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3322 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3323 r.configChangeFlags |= changes; 3324 r.startFreezingScreenLocked(r.app, globalChanges); 3325 r.forceNewConfig = false; 3326 if (r.app == null || r.app.thread == null) { 3327 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3328 "Config is destroying non-running " + r); 3329 destroyActivityLocked(r, true, false, "config"); 3330 } else if (r.state == ActivityState.PAUSING) { 3331 // A little annoying: we are waiting for this activity to 3332 // finish pausing. Let's not do anything now, but just 3333 // flag that it needs to be restarted when done pausing. 3334 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3335 "Config is skipping already pausing " + r); 3336 r.configDestroy = true; 3337 return true; 3338 } else if (r.state == ActivityState.RESUMED) { 3339 // Try to optimize this case: the configuration is changing 3340 // and we need to restart the top, resumed activity. 3341 // Instead of doing the normal handshaking, just say 3342 // "restart!". 3343 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3344 "Config is relaunching resumed " + r); 3345 relaunchActivityLocked(r, r.configChangeFlags, true); 3346 r.configChangeFlags = 0; 3347 } else { 3348 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3349 "Config is relaunching non-resumed " + r); 3350 relaunchActivityLocked(r, r.configChangeFlags, false); 3351 r.configChangeFlags = 0; 3352 } 3353 3354 // All done... tell the caller we weren't able to keep this 3355 // activity around. 3356 return false; 3357 } 3358 3359 // Default case: the activity can handle this new configuration, so 3360 // hand it over. Note that we don't need to give it the new 3361 // configuration, since we always send configuration changes to all 3362 // process when they happen so it can just use whatever configuration 3363 // it last got. 3364 if (r.app != null && r.app.thread != null) { 3365 try { 3366 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3367 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3368 } catch (RemoteException e) { 3369 // If process died, whatever. 3370 } 3371 } 3372 r.stopFreezingScreenLocked(false); 3373 3374 return true; 3375 } 3376 3377 private boolean relaunchActivityLocked(ActivityRecord r, 3378 int changes, boolean andResume) { 3379 List<ResultInfo> results = null; 3380 List<Intent> newIntents = null; 3381 if (andResume) { 3382 results = r.results; 3383 newIntents = r.newIntents; 3384 } 3385 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3386 + " with results=" + results + " newIntents=" + newIntents 3387 + " andResume=" + andResume); 3388 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3389 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3390 r.task.taskId, r.shortComponentName); 3391 3392 r.startFreezingScreenLocked(r.app, 0); 3393 3394 mStackSupervisor.removeChildActivityContainers(r); 3395 3396 try { 3397 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3398 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3399 + r); 3400 r.forceNewConfig = false; 3401 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3402 changes, !andResume, new Configuration(mService.mConfiguration)); 3403 // Note: don't need to call pauseIfSleepingLocked() here, because 3404 // the caller will only pass in 'andResume' if this activity is 3405 // currently resumed, which implies we aren't sleeping. 3406 } catch (RemoteException e) { 3407 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3408 } 3409 3410 if (andResume) { 3411 r.results = null; 3412 r.newIntents = null; 3413 r.state = ActivityState.RESUMED; 3414 } else { 3415 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3416 r.state = ActivityState.PAUSED; 3417 } 3418 3419 return true; 3420 } 3421 3422 boolean willActivityBeVisibleLocked(IBinder token) { 3423 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3424 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3425 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3426 final ActivityRecord r = activities.get(activityNdx); 3427 if (r.appToken == token) { 3428 return true; 3429 } 3430 if (r.fullscreen && !r.finishing) { 3431 return false; 3432 } 3433 } 3434 } 3435 final ActivityRecord r = ActivityRecord.forToken(token); 3436 if (r == null) { 3437 return false; 3438 } 3439 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3440 + " would have returned true for r=" + r); 3441 return !r.finishing; 3442 } 3443 3444 void closeSystemDialogsLocked() { 3445 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3446 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3447 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3448 final ActivityRecord r = activities.get(activityNdx); 3449 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3450 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3451 } 3452 } 3453 } 3454 } 3455 3456 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3457 boolean didSomething = false; 3458 TaskRecord lastTask = null; 3459 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3460 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3461 int numActivities = activities.size(); 3462 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3463 ActivityRecord r = activities.get(activityNdx); 3464 final boolean samePackage = r.packageName.equals(name) 3465 || (name == null && r.userId == userId); 3466 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3467 && (samePackage || r.task == lastTask) 3468 && (r.app == null || evenPersistent || !r.app.persistent)) { 3469 if (!doit) { 3470 if (r.finishing) { 3471 // If this activity is just finishing, then it is not 3472 // interesting as far as something to stop. 3473 continue; 3474 } 3475 return true; 3476 } 3477 didSomething = true; 3478 Slog.i(TAG, " Force finishing activity " + r); 3479 if (samePackage) { 3480 if (r.app != null) { 3481 r.app.removed = true; 3482 } 3483 r.app = null; 3484 } 3485 lastTask = r.task; 3486 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3487 true)) { 3488 // r has been deleted from mActivities, accommodate. 3489 --numActivities; 3490 --activityNdx; 3491 } 3492 } 3493 } 3494 } 3495 return didSomething; 3496 } 3497 3498 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3499 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3500 ActivityRecord topRecord = null; 3501 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3502 final TaskRecord task = mTaskHistory.get(taskNdx); 3503 ActivityRecord r = null; 3504 ActivityRecord top = null; 3505 int numActivities = 0; 3506 int numRunning = 0; 3507 final ArrayList<ActivityRecord> activities = task.mActivities; 3508 if (activities.isEmpty()) { 3509 continue; 3510 } 3511 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3512 r = activities.get(activityNdx); 3513 3514 // Initialize state for next task if needed. 3515 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3516 top = r; 3517 numActivities = numRunning = 0; 3518 } 3519 3520 // Add 'r' into the current task. 3521 numActivities++; 3522 if (r.app != null && r.app.thread != null) { 3523 numRunning++; 3524 } 3525 3526 if (localLOGV) Slog.v( 3527 TAG, r.intent.getComponent().flattenToShortString() 3528 + ": task=" + r.task); 3529 } 3530 3531 RunningTaskInfo ci = new RunningTaskInfo(); 3532 ci.id = task.taskId; 3533 ci.baseActivity = r.intent.getComponent(); 3534 ci.topActivity = top.intent.getComponent(); 3535 ci.lastActiveTime = task.lastActiveTime; 3536 3537 if (top.thumbHolder != null) { 3538 ci.description = top.thumbHolder.lastDescription; 3539 } 3540 ci.numActivities = numActivities; 3541 ci.numRunning = numRunning; 3542 //System.out.println( 3543 // "#" + maxNum + ": " + " descr=" + ci.description); 3544 if (receiver != null) { 3545 if (localLOGV) Slog.v( 3546 TAG, "State=" + top.state + "Idle=" + top.idle 3547 + " app=" + top.app 3548 + " thr=" + (top.app != null ? top.app.thread : null)); 3549 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3550 if (top.idle && top.app != null && top.app.thread != null) { 3551 topRecord = top; 3552 } else { 3553 top.thumbnailNeeded = true; 3554 } 3555 } 3556 pending.pendingRecords.add(top); 3557 } 3558 list.add(ci); 3559 } 3560 return topRecord; 3561 } 3562 3563 public void unhandledBackLocked() { 3564 final int top = mTaskHistory.size() - 1; 3565 if (DEBUG_SWITCH) Slog.d( 3566 TAG, "Performing unhandledBack(): top activity at " + top); 3567 if (top >= 0) { 3568 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3569 int activityTop = activities.size() - 1; 3570 if (activityTop > 0) { 3571 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3572 "unhandled-back", true); 3573 } 3574 } 3575 } 3576 3577 /** 3578 * Reset local parameters because an app's activity died. 3579 * @param app The app of the activity that died. 3580 * @return result from removeHistoryRecordsForAppLocked. 3581 */ 3582 boolean handleAppDiedLocked(ProcessRecord app) { 3583 if (mPausingActivity != null && mPausingActivity.app == app) { 3584 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3585 "App died while pausing: " + mPausingActivity); 3586 mPausingActivity = null; 3587 } 3588 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3589 mLastPausedActivity = null; 3590 mLastNoHistoryActivity = null; 3591 } 3592 3593 return removeHistoryRecordsForAppLocked(app); 3594 } 3595 3596 void handleAppCrashLocked(ProcessRecord app) { 3597 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3598 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3599 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3600 final ActivityRecord r = activities.get(activityNdx); 3601 if (r.app == app) { 3602 Slog.w(TAG, " Force finishing activity " 3603 + r.intent.getComponent().flattenToShortString()); 3604 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3605 } 3606 } 3607 } 3608 } 3609 3610 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3611 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3612 boolean printed = false; 3613 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3614 final TaskRecord task = mTaskHistory.get(taskNdx); 3615 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3616 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3617 dumpClient, dumpPackage, needSep, header, 3618 " Task id #" + task.taskId); 3619 if (printed) { 3620 header = null; 3621 } 3622 } 3623 return printed; 3624 } 3625 3626 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3627 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3628 3629 if ("all".equals(name)) { 3630 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3631 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3632 } 3633 } else if ("top".equals(name)) { 3634 final int top = mTaskHistory.size() - 1; 3635 if (top >= 0) { 3636 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3637 int listTop = list.size() - 1; 3638 if (listTop >= 0) { 3639 activities.add(list.get(listTop)); 3640 } 3641 } 3642 } else { 3643 ItemMatcher matcher = new ItemMatcher(); 3644 matcher.build(name); 3645 3646 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3647 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3648 if (matcher.match(r1, r1.intent.getComponent())) { 3649 activities.add(r1); 3650 } 3651 } 3652 } 3653 } 3654 3655 return activities; 3656 } 3657 3658 ActivityRecord restartPackage(String packageName) { 3659 ActivityRecord starting = topRunningActivityLocked(null); 3660 3661 // All activities that came from the package must be 3662 // restarted as if there was a config change. 3663 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3664 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3665 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3666 final ActivityRecord a = activities.get(activityNdx); 3667 if (a.info.packageName.equals(packageName)) { 3668 a.forceNewConfig = true; 3669 if (starting != null && a == starting && a.visible) { 3670 a.startFreezingScreenLocked(starting.app, 3671 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3672 } 3673 } 3674 } 3675 } 3676 3677 return starting; 3678 } 3679 3680 void removeTask(TaskRecord task) { 3681 mWindowManager.removeTask(task.taskId); 3682 final ActivityRecord r = mResumedActivity; 3683 if (r != null && r.task == task) { 3684 mResumedActivity = null; 3685 } 3686 3687 final int taskNdx = mTaskHistory.indexOf(task); 3688 final int topTaskNdx = mTaskHistory.size() - 1; 3689 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3690 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3691 } 3692 mTaskHistory.remove(task); 3693 3694 if (mTaskHistory.isEmpty()) { 3695 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3696 if (isOnHomeDisplay()) { 3697 mStackSupervisor.moveHomeStack(!isHomeStack()); 3698 } 3699 if (mStacks != null) { 3700 mStacks.remove(this); 3701 mStacks.add(0, this); 3702 } 3703 } 3704 } 3705 3706 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, boolean toTop) { 3707 TaskRecord task = new TaskRecord(taskId, info, intent); 3708 addTask(task, toTop); 3709 return task; 3710 } 3711 3712 ArrayList<TaskRecord> getAllTasks() { 3713 return new ArrayList<TaskRecord>(mTaskHistory); 3714 } 3715 3716 void addTask(final TaskRecord task, final boolean toTop) { 3717 task.stack = this; 3718 if (toTop) { 3719 insertTaskAtTop(task); 3720 } else { 3721 mTaskHistory.add(0, task); 3722 } 3723 } 3724 3725 public int getStackId() { 3726 return mStackId; 3727 } 3728 3729 @Override 3730 public String toString() { 3731 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3732 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3733 } 3734} 3735