ActivityStack.java revision ffcfcaadfefec2fb56f67a0a614a54bf4599d62b
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_SCREENSHOTS; 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 38import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 39 40import android.service.voice.IVoiceInteractionSession; 41import com.android.internal.app.IVoiceInteractor; 42import com.android.internal.os.BatteryStatsImpl; 43import com.android.server.Watchdog; 44import com.android.server.am.ActivityManagerService.ItemMatcher; 45import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 46import com.android.server.wm.AppTransition; 47import com.android.server.wm.TaskGroup; 48import com.android.server.wm.WindowManagerService; 49 50import android.app.Activity; 51import android.app.ActivityManager; 52import android.app.ActivityOptions; 53import android.app.AppGlobals; 54import android.app.IActivityController; 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.PersistableBundle; 73import android.os.RemoteException; 74import android.os.SystemClock; 75import android.os.Trace; 76import android.os.UserHandle; 77import android.util.EventLog; 78import android.util.Slog; 79import android.view.Display; 80 81import java.io.FileDescriptor; 82import java.io.PrintWriter; 83import java.lang.ref.WeakReference; 84import java.util.ArrayList; 85import java.util.Iterator; 86import java.util.List; 87import java.util.Objects; 88 89/** 90 * State and management of a single stack of activities. 91 */ 92final class ActivityStack { 93 94 // Ticks during which we check progress while waiting for an app to launch. 95 static final int LAUNCH_TICK = 500; 96 97 // How long we wait until giving up on the last activity to pause. This 98 // is short because it directly impacts the responsiveness of starting the 99 // next activity. 100 static final int PAUSE_TIMEOUT = 500; 101 102 // How long we wait for the activity to tell us it has stopped before 103 // giving up. This is a good amount of time because we really need this 104 // from the application in order to get its saved state. 105 static final int STOP_TIMEOUT = 10*1000; 106 107 // How long we wait until giving up on an activity telling us it has 108 // finished destroying itself. 109 static final int DESTROY_TIMEOUT = 10*1000; 110 111 // How long until we reset a task when the user returns to it. Currently 112 // disabled. 113 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 114 115 // How long between activity launches that we consider safe to not warn 116 // the user about an unexpected activity being launched on top. 117 static final long START_WARN_TIME = 5*1000; 118 119 // Set to false to disable the preview that is shown while a new activity 120 // is being started. 121 static final boolean SHOW_APP_STARTING_PREVIEW = true; 122 123 // How long to wait for all background Activities to redraw following a call to 124 // convertToTranslucent(). 125 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 126 127 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 128 129 enum ActivityState { 130 INITIALIZING, 131 RESUMED, 132 PAUSING, 133 PAUSED, 134 STOPPING, 135 STOPPED, 136 FINISHING, 137 DESTROYING, 138 DESTROYED 139 } 140 141 final ActivityManagerService mService; 142 final WindowManagerService mWindowManager; 143 144 /** 145 * The back history of all previous (and possibly still 146 * running) activities. It contains #TaskRecord objects. 147 */ 148 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 149 150 /** 151 * Used for validating app tokens with window manager. 152 */ 153 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 154 155 /** 156 * List of running activities, sorted by recent usage. 157 * The first entry in the list is the least recently used. 158 * It contains HistoryRecord objects. 159 */ 160 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 161 162 /** 163 * Animations that for the current transition have requested not to 164 * be considered for the transition animation. 165 */ 166 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * When we are in the process of pausing an activity, before starting the 170 * next one, this variable holds the activity that is currently being paused. 171 */ 172 ActivityRecord mPausingActivity = null; 173 174 /** 175 * This is the last activity that we put into the paused state. This is 176 * used to determine if we need to do an activity transition while sleeping, 177 * when we normally hold the top activity paused. 178 */ 179 ActivityRecord mLastPausedActivity = null; 180 181 /** 182 * Activities that specify No History must be removed once the user navigates away from them. 183 * If the device goes to sleep with such an activity in the paused state then we save it here 184 * and finish it later if another activity replaces it on wakeup. 185 */ 186 ActivityRecord mLastNoHistoryActivity = null; 187 188 /** 189 * Current activity that is resumed, or null if there is none. 190 */ 191 ActivityRecord mResumedActivity = null; 192 193 /** 194 * This is the last activity that has been started. It is only used to 195 * identify when multiple activities are started at once so that the user 196 * can be warned they may not be in the activity they think they are. 197 */ 198 ActivityRecord mLastStartedActivity = null; 199 200 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 201 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 202 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 203 // Activity in mTranslucentActivityWaiting is notified via 204 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 205 // background activity being drawn then the same call will be made with a true value. 206 ActivityRecord mTranslucentActivityWaiting = null; 207 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 208 new ArrayList<ActivityRecord>(); 209 // Options passed from the caller of the convertToTranslucent to the activity that will 210 // appear below it. 211 ActivityOptions mReturningActivityOptions = null; 212 213 /** 214 * Set when we know we are going to be calling updateConfiguration() 215 * soon, so want to skip intermediate config checks. 216 */ 217 boolean mConfigWillChange; 218 219 long mLaunchStartTime = 0; 220 long mFullyDrawnStartTime = 0; 221 222 /** 223 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 224 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 225 */ 226 private ActivityRecord mLastScreenshotActivity = null; 227 private Bitmap mLastScreenshotBitmap = null; 228 229 int mThumbnailWidth = -1; 230 int mThumbnailHeight = -1; 231 232 int mCurrentUser; 233 234 final int mStackId; 235 final ActivityContainer mActivityContainer; 236 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 237 ArrayList<ActivityStack> mStacks; 238 /** The attached Display's unique identifier, or -1 if detached */ 239 int mDisplayId; 240 241 /** Run all ActivityStacks through this */ 242 final ActivityStackSupervisor mStackSupervisor; 243 244 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 245 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 246 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 247 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 248 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 249 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 250 251 static class ScheduleDestroyArgs { 252 final ProcessRecord mOwner; 253 final boolean mOomAdj; 254 final String mReason; 255 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 256 mOwner = owner; 257 mOomAdj = oomAdj; 258 mReason = reason; 259 } 260 } 261 262 final Handler mHandler; 263 264 final class ActivityStackHandler extends Handler { 265 //public Handler() { 266 // if (localLOGV) Slog.v(TAG, "Handler started!"); 267 //} 268 ActivityStackHandler(Looper looper) { 269 super(looper); 270 } 271 272 @Override 273 public void handleMessage(Message msg) { 274 switch (msg.what) { 275 case PAUSE_TIMEOUT_MSG: { 276 ActivityRecord r = (ActivityRecord)msg.obj; 277 // We don't at this point know if the activity is fullscreen, 278 // so we need to be conservative and assume it isn't. 279 Slog.w(TAG, "Activity pause timeout for " + r); 280 synchronized (mService) { 281 if (r.app != null) { 282 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 283 } 284 activityPausedLocked(r.appToken, true, r.persistentState); 285 } 286 } break; 287 case LAUNCH_TICK_MSG: { 288 ActivityRecord r = (ActivityRecord)msg.obj; 289 synchronized (mService) { 290 if (r.continueLaunchTickingLocked()) { 291 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 292 } 293 } 294 } break; 295 case DESTROY_TIMEOUT_MSG: { 296 ActivityRecord r = (ActivityRecord)msg.obj; 297 // We don't at this point know if the activity is fullscreen, 298 // so we need to be conservative and assume it isn't. 299 Slog.w(TAG, "Activity destroy timeout for " + r); 300 synchronized (mService) { 301 activityDestroyedLocked(r != null ? r.appToken : null); 302 } 303 } break; 304 case STOP_TIMEOUT_MSG: { 305 ActivityRecord r = (ActivityRecord)msg.obj; 306 // We don't at this point know if the activity is fullscreen, 307 // so we need to be conservative and assume it isn't. 308 Slog.w(TAG, "Activity stop timeout for " + r); 309 synchronized (mService) { 310 if (r.isInHistory()) { 311 activityStoppedLocked(r, null, null, null); 312 } 313 } 314 } break; 315 case DESTROY_ACTIVITIES_MSG: { 316 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 317 synchronized (mService) { 318 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 319 } 320 } break; 321 case TRANSLUCENT_TIMEOUT_MSG: { 322 synchronized (mService) { 323 notifyActivityDrawnLocked(null); 324 } 325 } break; 326 } 327 } 328 } 329 330 int numActivities() { 331 int count = 0; 332 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 333 count += mTaskHistory.get(taskNdx).mActivities.size(); 334 } 335 return count; 336 } 337 338 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 339 mActivityContainer = activityContainer; 340 mStackSupervisor = activityContainer.getOuter(); 341 mService = mStackSupervisor.mService; 342 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 343 mWindowManager = mService.mWindowManager; 344 mStackId = activityContainer.mStackId; 345 mCurrentUser = mService.mCurrentUserId; 346 // Get the activity screenshot thumbnail dimensions 347 Resources res = mService.mContext.getResources(); 348 mThumbnailWidth = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 349 mThumbnailHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 350 } 351 352 /** 353 * Checks whether the userid is a profile of the current user. 354 */ 355 private boolean isCurrentProfileLocked(int userId) { 356 if (userId == mCurrentUser) return true; 357 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 358 if (mService.mCurrentProfileIds[i] == userId) return true; 359 } 360 return false; 361 } 362 363 boolean okToShowLocked(ActivityRecord r) { 364 return isCurrentProfileLocked(r.userId) 365 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 366 } 367 368 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 369 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 370 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 371 if (r != null) { 372 return r; 373 } 374 } 375 return null; 376 } 377 378 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 379 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 380 final TaskRecord task = mTaskHistory.get(taskNdx); 381 final ArrayList<ActivityRecord> activities = task.mActivities; 382 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 383 ActivityRecord r = activities.get(activityNdx); 384 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 385 return r; 386 } 387 } 388 } 389 return null; 390 } 391 392 /** 393 * This is a simplified version of topRunningActivityLocked that provides a number of 394 * optional skip-over modes. It is intended for use with the ActivityController hook only. 395 * 396 * @param token If non-null, any history records matching this token will be skipped. 397 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 398 * 399 * @return Returns the HistoryRecord of the next activity on the stack. 400 */ 401 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 402 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 403 TaskRecord task = mTaskHistory.get(taskNdx); 404 if (task.taskId == taskId) { 405 continue; 406 } 407 ArrayList<ActivityRecord> activities = task.mActivities; 408 for (int i = activities.size() - 1; i >= 0; --i) { 409 final ActivityRecord r = activities.get(i); 410 // Note: the taskId check depends on real taskId fields being non-zero 411 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 412 return r; 413 } 414 } 415 } 416 return null; 417 } 418 419 final ActivityRecord topActivity() { 420 // Iterate to find the first non-empty task stack. Note that this code can 421 // be simplified once we stop storing tasks with empty mActivities lists. 422 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 423 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 424 final int topActivityNdx = activities.size() - 1; 425 if (topActivityNdx >= 0) { 426 return activities.get(topActivityNdx); 427 } 428 } 429 return null; 430 } 431 432 final TaskRecord topTask() { 433 final int size = mTaskHistory.size(); 434 if (size > 0) { 435 return mTaskHistory.get(size - 1); 436 } 437 return null; 438 } 439 440 TaskRecord taskForIdLocked(int id) { 441 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 442 final TaskRecord task = mTaskHistory.get(taskNdx); 443 if (task.taskId == id) { 444 return task; 445 } 446 } 447 return null; 448 } 449 450 ActivityRecord isInStackLocked(IBinder token) { 451 final ActivityRecord r = ActivityRecord.forToken(token); 452 if (r != null) { 453 final TaskRecord task = r.task; 454 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 455 if (task.stack != this) Slog.w(TAG, 456 "Illegal state! task does not point to stack it is in."); 457 return r; 458 } 459 } 460 return null; 461 } 462 463 final boolean updateLRUListLocked(ActivityRecord r) { 464 final boolean hadit = mLRUActivities.remove(r); 465 mLRUActivities.add(r); 466 return hadit; 467 } 468 469 final boolean isHomeStack() { 470 return mStackId == HOME_STACK_ID; 471 } 472 473 final boolean isOnHomeDisplay() { 474 return isAttached() && 475 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 476 } 477 478 final void moveToFront() { 479 if (isAttached()) { 480 if (isOnHomeDisplay()) { 481 mStackSupervisor.moveHomeStack(isHomeStack()); 482 } 483 mStacks.remove(this); 484 mStacks.add(this); 485 } 486 } 487 488 final boolean isAttached() { 489 return mStacks != null; 490 } 491 492 /** 493 * Returns the top activity in any existing task matching the given 494 * Intent. Returns null if no such task is found. 495 */ 496 ActivityRecord findTaskLocked(ActivityRecord target) { 497 Intent intent = target.intent; 498 ActivityInfo info = target.info; 499 ComponentName cls = intent.getComponent(); 500 if (info.targetActivity != null) { 501 cls = new ComponentName(info.packageName, info.targetActivity); 502 } 503 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 504 boolean isDocument = intent != null & intent.isDocument(); 505 // If documentData is non-null then it must match the existing task data. 506 Uri documentData = isDocument ? intent.getData() : null; 507 508 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 509 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 510 final TaskRecord task = mTaskHistory.get(taskNdx); 511 if (task.voiceSession != null) { 512 // We never match voice sessions; those always run independently. 513 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 514 continue; 515 } 516 if (task.userId != userId) { 517 // Looking for a different task. 518 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 519 continue; 520 } 521 final ActivityRecord r = task.getTopActivity(); 522 if (r == null || r.finishing || r.userId != userId || 523 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 524 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 525 continue; 526 } 527 528 final Intent taskIntent = task.intent; 529 final Intent affinityIntent = task.affinityIntent; 530 final boolean taskIsDocument; 531 final Uri taskDocumentData; 532 if (taskIntent != null && taskIntent.isDocument()) { 533 taskIsDocument = true; 534 taskDocumentData = taskIntent.getData(); 535 } else if (affinityIntent != null && affinityIntent.isDocument()) { 536 taskIsDocument = true; 537 taskDocumentData = affinityIntent.getData(); 538 } else { 539 taskIsDocument = false; 540 taskDocumentData = null; 541 } 542 543 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 544 + taskIntent.getComponent().flattenToShortString() 545 + "/aff=" + r.task.affinity + " to new cls=" 546 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 547 if (!isDocument && !taskIsDocument && task.affinity != null) { 548 if (task.affinity.equals(target.taskAffinity)) { 549 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 550 return r; 551 } 552 } else if (taskIntent != null && taskIntent.getComponent() != null && 553 taskIntent.getComponent().compareTo(cls) == 0 && 554 Objects.equals(documentData, taskDocumentData)) { 555 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 556 //dump(); 557 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 558 + r.intent); 559 return r; 560 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 561 affinityIntent.getComponent().compareTo(cls) == 0 && 562 Objects.equals(documentData, taskDocumentData)) { 563 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 564 //dump(); 565 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 566 + r.intent); 567 return r; 568 } else if (DEBUG_TASKS) { 569 Slog.d(TAG, "Not a match: " + task); 570 } 571 } 572 573 return null; 574 } 575 576 /** 577 * Returns the first activity (starting from the top of the stack) that 578 * is the same as the given activity. Returns null if no such activity 579 * is found. 580 */ 581 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 582 ComponentName cls = intent.getComponent(); 583 if (info.targetActivity != null) { 584 cls = new ComponentName(info.packageName, info.targetActivity); 585 } 586 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 587 588 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 589 TaskRecord task = mTaskHistory.get(taskNdx); 590 if (!isCurrentProfileLocked(task.userId)) { 591 return null; 592 } 593 final ArrayList<ActivityRecord> activities = task.mActivities; 594 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 595 ActivityRecord r = activities.get(activityNdx); 596 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 597 //Slog.i(TAG, "Found matching class!"); 598 //dump(); 599 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 600 return r; 601 } 602 } 603 } 604 605 return null; 606 } 607 608 /* 609 * Move the activities around in the stack to bring a user to the foreground. 610 */ 611 final void switchUserLocked(int userId) { 612 if (mCurrentUser == userId) { 613 return; 614 } 615 mCurrentUser = userId; 616 617 // Move userId's tasks to the top. 618 int index = mTaskHistory.size(); 619 for (int i = 0; i < index; ) { 620 TaskRecord task = mTaskHistory.get(i); 621 if (isCurrentProfileLocked(task.userId)) { 622 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 623 " moving " + task + " to top"); 624 mTaskHistory.remove(i); 625 mTaskHistory.add(task); 626 --index; 627 // Use same value for i. 628 } else { 629 ++i; 630 } 631 } 632 if (VALIDATE_TOKENS) { 633 validateAppTokensLocked(); 634 } 635 } 636 637 void minimalResumeActivityLocked(ActivityRecord r) { 638 r.state = ActivityState.RESUMED; 639 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 640 + " (starting new instance)"); 641 r.stopped = false; 642 mResumedActivity = r; 643 r.task.touchActiveTime(); 644 mService.addRecentTaskLocked(r.task); 645 completeResumeLocked(r); 646 mStackSupervisor.checkReadyForSleepLocked(); 647 setLaunchTime(r); 648 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 649 } 650 651 private void startLaunchTraces() { 652 if (mFullyDrawnStartTime != 0) { 653 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 654 } 655 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 656 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 657 } 658 659 private void stopFullyDrawnTraceIfNeeded() { 660 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 661 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 662 mFullyDrawnStartTime = 0; 663 } 664 } 665 666 void setLaunchTime(ActivityRecord r) { 667 if (r.displayStartTime == 0) { 668 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 669 if (mLaunchStartTime == 0) { 670 startLaunchTraces(); 671 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 672 } 673 } else if (mLaunchStartTime == 0) { 674 startLaunchTraces(); 675 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 676 } 677 } 678 679 void clearLaunchTime(ActivityRecord r) { 680 // Make sure that there is no activity waiting for this to launch. 681 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 682 r.displayStartTime = r.fullyDrawnStartTime = 0; 683 } else { 684 mStackSupervisor.removeTimeoutsForActivityLocked(r); 685 mStackSupervisor.scheduleIdleTimeoutLocked(r); 686 } 687 } 688 689 void awakeFromSleepingLocked() { 690 // Ensure activities are no longer sleeping. 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 activities.get(activityNdx).setSleeping(false); 695 } 696 } 697 } 698 699 /** 700 * @return true if something must be done before going to sleep. 701 */ 702 boolean checkReadyForSleepLocked() { 703 if (mResumedActivity != null) { 704 // Still have something resumed; can't sleep until it is paused. 705 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 706 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 707 startPausingLocked(false, true); 708 return true; 709 } 710 if (mPausingActivity != null) { 711 // Still waiting for something to pause; can't sleep yet. 712 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 713 return true; 714 } 715 716 return false; 717 } 718 719 void goToSleep() { 720 ensureActivitiesVisibleLocked(null, 0); 721 722 // Make sure any stopped but visible activities are now sleeping. 723 // This ensures that the activity's onStop() is called. 724 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 725 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 726 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 727 final ActivityRecord r = activities.get(activityNdx); 728 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 729 r.setSleeping(true); 730 } 731 } 732 } 733 } 734 735 /** 736 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 737 * again when requested. 738 */ 739 private void invalidateLastScreenshot() { 740 mLastScreenshotActivity = null; 741 if (mLastScreenshotBitmap != null) { 742 mLastScreenshotBitmap.recycle(); 743 } 744 mLastScreenshotBitmap = null; 745 } 746 747 public final Bitmap screenshotActivities(ActivityRecord who) { 748 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 749 if (who.noDisplay) { 750 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 751 return null; 752 } 753 754 TaskRecord tr = who.task; 755 if (mService.getMostRecentTask() != tr || isHomeStack()) { 756 // This is an optimization -- since we never show Home or Recents within Recents itself, 757 // we can just go ahead and skip taking the screenshot if this is the home stack. In 758 // the case where the most recent task is not the task that was supplied, then the stack 759 // has changed, so invalidate the last screenshot(). 760 invalidateLastScreenshot(); 761 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 762 return null; 763 } 764 765 int w = mThumbnailWidth; 766 int h = mThumbnailHeight; 767 if (w > 0) { 768 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 769 || mLastScreenshotActivity.state == ActivityState.RESUMED 770 || mLastScreenshotBitmap.getWidth() != w 771 || mLastScreenshotBitmap.getHeight() != h) { 772 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 773 mLastScreenshotActivity = who; 774 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 775 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 776 } 777 if (mLastScreenshotBitmap != null) { 778 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 779 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 780 } 781 } 782 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 783 return null; 784 } 785 786 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 787 if (mPausingActivity != null) { 788 Slog.e(TAG, "Trying to pause when pause is already pending for " 789 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 790 } 791 ActivityRecord prev = mResumedActivity; 792 if (prev == null) { 793 Slog.e(TAG, "Trying to pause when nothing is resumed", 794 new RuntimeException("here").fillInStackTrace()); 795 mStackSupervisor.resumeTopActivitiesLocked(); 796 return; 797 } 798 799 if (mActivityContainer.mParentActivity == null) { 800 // Top level stack, not a child. Look for child stacks. 801 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 802 } 803 804 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 805 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 806 mResumedActivity = null; 807 mPausingActivity = prev; 808 mLastPausedActivity = prev; 809 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 810 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 811 prev.state = ActivityState.PAUSING; 812 prev.task.touchActiveTime(); 813 clearLaunchTime(prev); 814 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 815 if (next == null || next.noDisplay || next.task != prev.task) { 816 prev.updateThumbnail(screenshotActivities(prev), null); 817 } 818 stopFullyDrawnTraceIfNeeded(); 819 820 mService.updateCpuStats(); 821 822 if (prev.app != null && prev.app.thread != null) { 823 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 824 try { 825 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 826 prev.userId, System.identityHashCode(prev), 827 prev.shortComponentName); 828 mService.updateUsageStats(prev, false); 829 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 830 userLeaving, prev.configChangeFlags); 831 } catch (Exception e) { 832 // Ignore exception, if process died other code will cleanup. 833 Slog.w(TAG, "Exception thrown during pause", e); 834 mPausingActivity = null; 835 mLastPausedActivity = null; 836 mLastNoHistoryActivity = null; 837 } 838 } else { 839 mPausingActivity = null; 840 mLastPausedActivity = null; 841 mLastNoHistoryActivity = null; 842 } 843 844 // If we are not going to sleep, we want to ensure the device is 845 // awake until the next activity is started. 846 if (!mService.isSleepingOrShuttingDown()) { 847 mStackSupervisor.acquireLaunchWakelock(); 848 } 849 850 if (mPausingActivity != null) { 851 // Have the window manager pause its key dispatching until the new 852 // activity has started. If we're pausing the activity just because 853 // the screen is being turned off and the UI is sleeping, don't interrupt 854 // key dispatch; the same activity will pick it up again on wakeup. 855 if (!uiSleeping) { 856 prev.pauseKeyDispatchingLocked(); 857 } else { 858 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 859 } 860 861 // Schedule a pause timeout in case the app doesn't respond. 862 // We don't give it much time because this directly impacts the 863 // responsiveness seen by the user. 864 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 865 msg.obj = prev; 866 prev.pauseTime = SystemClock.uptimeMillis(); 867 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 868 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 869 } else { 870 // This activity failed to schedule the 871 // pause, so just treat it as being paused now. 872 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 873 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 874 } 875 } 876 877 final void activityPausedLocked(IBinder token, boolean timeout, 878 PersistableBundle persistentState) { 879 if (DEBUG_PAUSE) Slog.v( 880 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 881 882 final ActivityRecord r = isInStackLocked(token); 883 if (r != null) { 884 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 885 if (persistentState != null) { 886 r.persistentState = persistentState; 887 mService.notifyTaskPersisterLocked(r.task, false); 888 } 889 if (mPausingActivity == r) { 890 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 891 + (timeout ? " (due to timeout)" : " (pause complete)")); 892 r.state = ActivityState.PAUSED; 893 completePauseLocked(); 894 } else { 895 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 896 r.userId, System.identityHashCode(r), r.shortComponentName, 897 mPausingActivity != null 898 ? mPausingActivity.shortComponentName : "(none)"); 899 } 900 } 901 } 902 903 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 904 PersistableBundle persistentState, CharSequence description) { 905 if (r.state != ActivityState.STOPPING) { 906 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 907 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 908 return; 909 } 910 if (persistentState != null) { 911 r.persistentState = persistentState; 912 mService.notifyTaskPersisterLocked(r.task, false); 913 } 914 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 915 if (icicle != null) { 916 // If icicle is null, this is happening due to a timeout, so we 917 // haven't really saved the state. 918 r.icicle = icicle; 919 r.haveState = true; 920 r.launchCount = 0; 921 r.updateThumbnail(null, description); 922 } 923 if (!r.stopped) { 924 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 925 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 926 r.stopped = true; 927 r.state = ActivityState.STOPPED; 928 if (r.finishing) { 929 r.clearOptionsLocked(); 930 } else { 931 if (r.configDestroy) { 932 destroyActivityLocked(r, true, false, "stop-config"); 933 mStackSupervisor.resumeTopActivitiesLocked(); 934 } else { 935 mStackSupervisor.updatePreviousProcessLocked(r); 936 } 937 } 938 } 939 } 940 941 private void completePauseLocked() { 942 ActivityRecord prev = mPausingActivity; 943 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 944 945 if (prev != null) { 946 if (prev.finishing) { 947 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 948 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 949 } else if (prev.app != null) { 950 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 951 if (prev.waitingVisible) { 952 prev.waitingVisible = false; 953 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 954 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 955 TAG, "Complete pause, no longer waiting: " + prev); 956 } 957 if (prev.configDestroy) { 958 // The previous is being paused because the configuration 959 // is changing, which means it is actually stopping... 960 // To juggle the fact that we are also starting a new 961 // instance right now, we need to first completely stop 962 // the current instance before starting the new one. 963 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 964 destroyActivityLocked(prev, true, false, "pause-config"); 965 } else { 966 mStackSupervisor.mStoppingActivities.add(prev); 967 if (mStackSupervisor.mStoppingActivities.size() > 3 || 968 prev.frontOfTask && mTaskHistory.size() <= 1) { 969 // If we already have a few activities waiting to stop, 970 // then give up on things going idle and start clearing 971 // them out. Or if r is the last of activity of the last task the stack 972 // will be empty and must be cleared immediately. 973 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 974 mStackSupervisor.scheduleIdleLocked(); 975 } else { 976 mStackSupervisor.checkReadyForSleepLocked(); 977 } 978 } 979 } else { 980 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 981 prev = null; 982 } 983 mPausingActivity = null; 984 } 985 986 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 987 if (!mService.isSleepingOrShuttingDown()) { 988 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 989 } else { 990 mStackSupervisor.checkReadyForSleepLocked(); 991 ActivityRecord top = topStack.topRunningActivityLocked(null); 992 if (top == null || (prev != null && top != prev)) { 993 // If there are no more activities available to run, 994 // do resume anyway to start something. Also if the top 995 // activity on the stack is not the just paused activity, 996 // we need to go ahead and resume it to ensure we complete 997 // an in-flight app switch. 998 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 999 } 1000 } 1001 1002 if (prev != null) { 1003 prev.resumeKeyDispatchingLocked(); 1004 1005 if (prev.app != null && prev.cpuTimeAtResume > 0 1006 && mService.mBatteryStatsService.isOnBattery()) { 1007 long diff; 1008 synchronized (mService.mProcessCpuThread) { 1009 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1010 - prev.cpuTimeAtResume; 1011 } 1012 if (diff > 0) { 1013 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1014 synchronized (bsi) { 1015 BatteryStatsImpl.Uid.Proc ps = 1016 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1017 prev.info.packageName); 1018 if (ps != null) { 1019 ps.addForegroundTimeLocked(diff); 1020 } 1021 } 1022 } 1023 } 1024 prev.cpuTimeAtResume = 0; // reset it 1025 } 1026 } 1027 1028 /** 1029 * Once we know that we have asked an application to put an activity in 1030 * the resumed state (either by launching it or explicitly telling it), 1031 * this function updates the rest of our state to match that fact. 1032 */ 1033 private void completeResumeLocked(ActivityRecord next) { 1034 next.idle = false; 1035 next.results = null; 1036 next.newIntents = null; 1037 if (next.nowVisible) { 1038 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1039 mStackSupervisor.dismissKeyguard(); 1040 } 1041 1042 // schedule an idle timeout in case the app doesn't do it for us. 1043 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1044 1045 mStackSupervisor.reportResumedActivityLocked(next); 1046 1047 next.resumeKeyDispatchingLocked(); 1048 mNoAnimActivities.clear(); 1049 1050 // Mark the point when the activity is resuming 1051 // TODO: To be more accurate, the mark should be before the onCreate, 1052 // not after the onResume. But for subsequent starts, onResume is fine. 1053 if (next.app != null) { 1054 synchronized (mService.mProcessCpuThread) { 1055 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1056 } 1057 } else { 1058 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1059 } 1060 1061 // If we are resuming the activity that we had last screenshotted, then we know it will be 1062 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1063 if (next == mLastScreenshotActivity) { 1064 invalidateLastScreenshot(); 1065 } 1066 } 1067 1068 /** 1069 * Determine if home should be visible below the passed record. 1070 * @param record activity we are querying for. 1071 * @return true if home is visible below the passed activity, false otherwise. 1072 */ 1073 boolean isActivityOverHome(ActivityRecord record) { 1074 // Start at record and go down, look for either home or a visible fullscreen activity. 1075 final TaskRecord recordTask = record.task; 1076 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1077 TaskRecord task = mTaskHistory.get(taskNdx); 1078 final ArrayList<ActivityRecord> activities = task.mActivities; 1079 final int startNdx = 1080 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1081 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1082 final ActivityRecord r = activities.get(activityNdx); 1083 if (r.isHomeActivity()) { 1084 return true; 1085 } 1086 if (!r.finishing && r.fullscreen) { 1087 // Passed activity is over a fullscreen activity. 1088 return false; 1089 } 1090 } 1091 if (task.mOnTopOfHome) { 1092 // Got to the bottom of a task on top of home without finding a visible fullscreen 1093 // activity. Home is visible. 1094 return true; 1095 } 1096 } 1097 // Got to the bottom of this stack and still don't know. If this is over the home stack 1098 // then record is over home. May not work if we ever get more than two layers. 1099 return mStackSupervisor.isFrontStack(this); 1100 } 1101 1102 private void setVisibile(ActivityRecord r, boolean visible) { 1103 r.visible = visible; 1104 mWindowManager.setAppVisibility(r.appToken, visible); 1105 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1106 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1107 ActivityContainer container = containers.get(containerNdx); 1108 container.setVisible(visible); 1109 } 1110 } 1111 1112 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1113 // If so, this stack is hidden, otherwise it is visible. 1114 private boolean isStackVisible() { 1115 if (!isAttached()) { 1116 return false; 1117 } 1118 1119 if (mStackSupervisor.isFrontStack(this)) { 1120 return true; 1121 } 1122 1123 /** 1124 * Start at the task above this one and go up, looking for a visible 1125 * fullscreen activity, or a translucent activity that requested the 1126 * wallpaper to be shown behind it. 1127 */ 1128 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1129 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1130 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1131 final ArrayList<ActivityRecord> activities = tasks.get(taskNdx).mActivities; 1132 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1133 final ActivityRecord r = activities.get(activityNdx); 1134 1135 // Conditions for an activity to obscure the stack we're 1136 // examining: 1137 // 1. Not Finishing AND Visible AND: 1138 // 2. Either: 1139 // - Full Screen Activity OR 1140 // - On top of Home and our stack is NOT home 1141 if (!r.finishing && r.visible && (r.fullscreen || 1142 (!isHomeStack() && r.frontOfTask && tasks.get(taskNdx).mOnTopOfHome))) { 1143 return false; 1144 } 1145 } 1146 } 1147 } 1148 1149 return true; 1150 } 1151 1152 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1153 ActivityRecord r = topRunningActivityLocked(null); 1154 if (r != null) { 1155 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1156 } 1157 } 1158 1159 /** 1160 * Make sure that all activities that need to be visible (that is, they 1161 * currently can be seen by the user) actually are. 1162 */ 1163 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1164 String onlyThisProcess, int configChanges) { 1165 if (DEBUG_VISBILITY) Slog.v( 1166 TAG, "ensureActivitiesVisible behind " + top 1167 + " configChanges=0x" + Integer.toHexString(configChanges)); 1168 1169 if (mTranslucentActivityWaiting != top) { 1170 mUndrawnActivitiesBelowTopTranslucent.clear(); 1171 if (mTranslucentActivityWaiting != null) { 1172 // Call the callback with a timeout indication. 1173 notifyActivityDrawnLocked(null); 1174 mTranslucentActivityWaiting = null; 1175 } 1176 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1177 } 1178 1179 // If the top activity is not fullscreen, then we need to 1180 // make sure any activities under it are now visible. 1181 boolean aboveTop = true; 1182 boolean behindFullscreen = !isStackVisible(); 1183 1184 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1185 final TaskRecord task = mTaskHistory.get(taskNdx); 1186 final ArrayList<ActivityRecord> activities = task.mActivities; 1187 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1188 final ActivityRecord r = activities.get(activityNdx); 1189 if (r.finishing) { 1190 continue; 1191 } 1192 if (aboveTop && r != top) { 1193 continue; 1194 } 1195 aboveTop = false; 1196 if (!behindFullscreen) { 1197 if (DEBUG_VISBILITY) Slog.v( 1198 TAG, "Make visible? " + r + " finishing=" + r.finishing 1199 + " state=" + r.state); 1200 1201 final boolean doThisProcess = onlyThisProcess == null 1202 || onlyThisProcess.equals(r.processName); 1203 1204 // First: if this is not the current activity being started, make 1205 // sure it matches the current configuration. 1206 if (r != starting && doThisProcess) { 1207 ensureActivityConfigurationLocked(r, 0); 1208 } 1209 1210 if (r.app == null || r.app.thread == null) { 1211 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1212 // This activity needs to be visible, but isn't even 1213 // running... get it started, but don't resume it 1214 // at this point. 1215 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1216 if (r != starting) { 1217 r.startFreezingScreenLocked(r.app, configChanges); 1218 } 1219 if (!r.visible) { 1220 if (DEBUG_VISBILITY) Slog.v( 1221 TAG, "Starting and making visible: " + r); 1222 setVisibile(r, true); 1223 } 1224 if (r != starting) { 1225 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1226 } 1227 } 1228 1229 } else if (r.visible) { 1230 // If this activity is already visible, then there is nothing 1231 // else to do here. 1232 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1233 r.stopFreezingScreenLocked(false); 1234 1235 } else if (onlyThisProcess == null) { 1236 // This activity is not currently visible, but is running. 1237 // Tell it to become visible. 1238 r.visible = true; 1239 if (r.state != ActivityState.RESUMED && r != starting) { 1240 // If this activity is paused, tell it 1241 // to now show its window. 1242 if (DEBUG_VISBILITY) Slog.v( 1243 TAG, "Making visible and scheduling visibility: " + r); 1244 try { 1245 if (mTranslucentActivityWaiting != null) { 1246 r.updateOptionsLocked(mReturningActivityOptions); 1247 mUndrawnActivitiesBelowTopTranslucent.add(r); 1248 } 1249 setVisibile(r, true); 1250 r.sleeping = false; 1251 r.app.pendingUiClean = true; 1252 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1253 r.stopFreezingScreenLocked(false); 1254 } catch (Exception e) { 1255 // Just skip on any failure; we'll make it 1256 // visible when it next restarts. 1257 Slog.w(TAG, "Exception thrown making visibile: " 1258 + r.intent.getComponent(), e); 1259 } 1260 } 1261 } 1262 1263 // Aggregate current change flags. 1264 configChanges |= r.configChangeFlags; 1265 1266 if (r.fullscreen) { 1267 // At this point, nothing else needs to be shown 1268 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1269 behindFullscreen = true; 1270 } else if (!isHomeStack() && r.frontOfTask && task.mOnTopOfHome) { 1271 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1272 behindFullscreen = true; 1273 } 1274 } else { 1275 if (DEBUG_VISBILITY) Slog.v( 1276 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1277 + " state=" + r.state 1278 + " behindFullscreen=" + behindFullscreen); 1279 // Now for any activities that aren't visible to the user, make 1280 // sure they no longer are keeping the screen frozen. 1281 if (r.visible) { 1282 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1283 try { 1284 setVisibile(r, false); 1285 switch (r.state) { 1286 case STOPPING: 1287 case STOPPED: 1288 if (r.app != null && r.app.thread != null) { 1289 if (DEBUG_VISBILITY) Slog.v( 1290 TAG, "Scheduling invisibility: " + r); 1291 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1292 } 1293 break; 1294 1295 case INITIALIZING: 1296 case RESUMED: 1297 case PAUSING: 1298 case PAUSED: 1299 // This case created for transitioning activities from 1300 // translucent to opaque {@link Activity#convertToOpaque}. 1301 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1302 mStackSupervisor.mStoppingActivities.add(r); 1303 } 1304 mStackSupervisor.scheduleIdleLocked(); 1305 break; 1306 1307 default: 1308 break; 1309 } 1310 } catch (Exception e) { 1311 // Just skip on any failure; we'll make it 1312 // visible when it next restarts. 1313 Slog.w(TAG, "Exception thrown making hidden: " 1314 + r.intent.getComponent(), e); 1315 } 1316 } else { 1317 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1318 } 1319 } 1320 } 1321 } 1322 } 1323 1324 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1325 mTranslucentActivityWaiting = r; 1326 mUndrawnActivitiesBelowTopTranslucent.clear(); 1327 mReturningActivityOptions = options; 1328 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1329 } 1330 1331 /** 1332 * Called as activities below the top translucent activity are redrawn. When the last one is 1333 * redrawn notify the top activity by calling 1334 * {@link Activity#onTranslucentConversionComplete}. 1335 * 1336 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1337 * occurred and the activity will be notified immediately. 1338 */ 1339 void notifyActivityDrawnLocked(ActivityRecord r) { 1340 mActivityContainer.setDrawn(); 1341 if ((r == null) 1342 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1343 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1344 // The last undrawn activity below the top has just been drawn. If there is an 1345 // opaque activity at the top, notify it that it can become translucent safely now. 1346 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1347 mTranslucentActivityWaiting = null; 1348 mUndrawnActivitiesBelowTopTranslucent.clear(); 1349 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1350 1351 if (waitingActivity != null) { 1352 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1353 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1354 try { 1355 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1356 waitingActivity.appToken, r != null); 1357 } catch (RemoteException e) { 1358 } 1359 } 1360 } 1361 } 1362 } 1363 1364 /** If any activities below the top running one are in the INITIALIZING state and they have a 1365 * starting window displayed then remove that starting window. It is possible that the activity 1366 * in this state will never resumed in which case that starting window will be orphaned. */ 1367 void cancelInitializingActivities() { 1368 final ActivityRecord topActivity = topRunningActivityLocked(null); 1369 boolean aboveTop = true; 1370 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1371 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1372 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1373 final ActivityRecord r = activities.get(activityNdx); 1374 if (aboveTop) { 1375 if (r == topActivity) { 1376 aboveTop = false; 1377 } 1378 continue; 1379 } 1380 1381 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1382 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1383 r.mStartingWindowShown = false; 1384 mWindowManager.removeAppStartingWindow(r.appToken); 1385 } 1386 } 1387 } 1388 } 1389 1390 /** 1391 * Ensure that the top activity in the stack is resumed. 1392 * 1393 * @param prev The previously resumed activity, for when in the process 1394 * of pausing; can be null to call from elsewhere. 1395 * 1396 * @return Returns true if something is being resumed, or false if 1397 * nothing happened. 1398 */ 1399 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1400 return resumeTopActivityLocked(prev, null); 1401 } 1402 1403 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1404 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1405 1406 ActivityRecord parent = mActivityContainer.mParentActivity; 1407 if ((parent != null && parent.state != ActivityState.RESUMED) || 1408 !mActivityContainer.isAttached()) { 1409 // Do not resume this stack if its parent is not resumed. 1410 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1411 return false; 1412 } 1413 1414 cancelInitializingActivities(); 1415 1416 // Find the first activity that is not finishing. 1417 ActivityRecord next = topRunningActivityLocked(null); 1418 1419 // Remember how we'll process this pause/resume situation, and ensure 1420 // that the state is reset however we wind up proceeding. 1421 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1422 mStackSupervisor.mUserLeaving = false; 1423 1424 if (next == null) { 1425 // There are no more activities! Let's just start up the 1426 // Launcher... 1427 ActivityOptions.abort(options); 1428 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1429 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1430 // Only resume home if on home display 1431 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1432 } 1433 1434 next.delayedResume = false; 1435 1436 // If the top activity is the resumed one, nothing to do. 1437 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1438 mStackSupervisor.allResumedActivitiesComplete()) { 1439 // Make sure we have executed any pending transitions, since there 1440 // should be nothing left to do at this point. 1441 mWindowManager.executeAppTransition(); 1442 mNoAnimActivities.clear(); 1443 ActivityOptions.abort(options); 1444 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1445 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1446 return false; 1447 } 1448 1449 final TaskRecord nextTask = next.task; 1450 final TaskRecord prevTask = prev != null ? prev.task : null; 1451 if (prevTask != null && prevTask.stack == this && 1452 prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1453 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1454 if (prevTask == nextTask) { 1455 prevTask.setFrontOfTask(); 1456 } else if (prevTask != topTask()) { 1457 // This task is going away but it was supposed to return to the home task. 1458 // Now the task above it has to return to the home task instead. 1459 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1460 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1461 } else { 1462 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1463 "resumeTopActivityLocked: Launching home next"); 1464 // Only resume home if on home display 1465 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1466 } 1467 } 1468 1469 // If we are sleeping, and there is no resumed activity, and the top 1470 // activity is paused, well that is the state we want. 1471 if (mService.isSleepingOrShuttingDown() 1472 && mLastPausedActivity == next 1473 && mStackSupervisor.allPausedActivitiesComplete()) { 1474 // Make sure we have executed any pending transitions, since there 1475 // should be nothing left to do at this point. 1476 mWindowManager.executeAppTransition(); 1477 mNoAnimActivities.clear(); 1478 ActivityOptions.abort(options); 1479 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1480 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1481 return false; 1482 } 1483 1484 // Make sure that the user who owns this activity is started. If not, 1485 // we will just leave it as is because someone should be bringing 1486 // another user's activities to the top of the stack. 1487 if (mService.mStartedUsers.get(next.userId) == null) { 1488 Slog.w(TAG, "Skipping resume of top activity " + next 1489 + ": user " + next.userId + " is stopped"); 1490 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1491 return false; 1492 } 1493 1494 // The activity may be waiting for stop, but that is no longer 1495 // appropriate for it. 1496 mStackSupervisor.mStoppingActivities.remove(next); 1497 mStackSupervisor.mGoingToSleepActivities.remove(next); 1498 next.sleeping = false; 1499 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1500 1501 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1502 1503 // If we are currently pausing an activity, then don't do anything 1504 // until that is done. 1505 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1506 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1507 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1508 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1509 return false; 1510 } 1511 1512 // Okay we are now going to start a switch, to 'next'. We may first 1513 // have to pause the current activity, but this is an important point 1514 // where we have decided to go to 'next' so keep track of that. 1515 // XXX "App Redirected" dialog is getting too many false positives 1516 // at this point, so turn off for now. 1517 if (false) { 1518 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1519 long now = SystemClock.uptimeMillis(); 1520 final boolean inTime = mLastStartedActivity.startTime != 0 1521 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1522 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1523 final int nextUid = next.info.applicationInfo.uid; 1524 if (inTime && lastUid != nextUid 1525 && lastUid != next.launchedFromUid 1526 && mService.checkPermission( 1527 android.Manifest.permission.STOP_APP_SWITCHES, 1528 -1, next.launchedFromUid) 1529 != PackageManager.PERMISSION_GRANTED) { 1530 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1531 } else { 1532 next.startTime = now; 1533 mLastStartedActivity = next; 1534 } 1535 } else { 1536 next.startTime = SystemClock.uptimeMillis(); 1537 mLastStartedActivity = next; 1538 } 1539 } 1540 1541 // We need to start pausing the current activity so the top one 1542 // can be resumed... 1543 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1544 if (mResumedActivity != null) { 1545 pausing = true; 1546 startPausingLocked(userLeaving, false); 1547 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1548 } 1549 if (pausing) { 1550 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1551 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1552 // At this point we want to put the upcoming activity's process 1553 // at the top of the LRU list, since we know we will be needing it 1554 // very soon and it would be a waste to let it get killed if it 1555 // happens to be sitting towards the end. 1556 if (next.app != null && next.app.thread != null) { 1557 // No reason to do full oom adj update here; we'll let that 1558 // happen whenever it needs to later. 1559 mService.updateLruProcessLocked(next.app, true, null); 1560 } 1561 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1562 return true; 1563 } 1564 1565 // If the most recent activity was noHistory but was only stopped rather 1566 // than stopped+finished because the device went to sleep, we need to make 1567 // sure to finish it as we're making a new activity topmost. 1568 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1569 !mLastNoHistoryActivity.finishing) { 1570 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1571 " on new resume"); 1572 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1573 null, "no-history", false); 1574 mLastNoHistoryActivity = null; 1575 } 1576 1577 if (prev != null && prev != next) { 1578 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1579 prev.waitingVisible = true; 1580 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1581 if (DEBUG_SWITCH) Slog.v( 1582 TAG, "Resuming top, waiting visible to hide: " + prev); 1583 } else { 1584 // The next activity is already visible, so hide the previous 1585 // activity's windows right now so we can show the new one ASAP. 1586 // We only do this if the previous is finishing, which should mean 1587 // it is on top of the one being resumed so hiding it quickly 1588 // is good. Otherwise, we want to do the normal route of allowing 1589 // the resumed activity to be shown so we can decide if the 1590 // previous should actually be hidden depending on whether the 1591 // new one is found to be full-screen or not. 1592 if (prev.finishing) { 1593 mWindowManager.setAppVisibility(prev.appToken, false); 1594 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1595 + prev + ", waitingVisible=" 1596 + (prev != null ? prev.waitingVisible : null) 1597 + ", nowVisible=" + next.nowVisible); 1598 } else { 1599 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1600 + prev + ", waitingVisible=" 1601 + (prev != null ? prev.waitingVisible : null) 1602 + ", nowVisible=" + next.nowVisible); 1603 } 1604 } 1605 } 1606 1607 // Launching this app's activity, make sure the app is no longer 1608 // considered stopped. 1609 try { 1610 AppGlobals.getPackageManager().setPackageStoppedState( 1611 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1612 } catch (RemoteException e1) { 1613 } catch (IllegalArgumentException e) { 1614 Slog.w(TAG, "Failed trying to unstop package " 1615 + next.packageName + ": " + e); 1616 } 1617 1618 // We are starting up the next activity, so tell the window manager 1619 // that the previous one will be hidden soon. This way it can know 1620 // to ignore it when computing the desired screen orientation. 1621 boolean anim = true; 1622 if (prev != null) { 1623 if (prev.finishing) { 1624 if (DEBUG_TRANSITION) Slog.v(TAG, 1625 "Prepare close transition: prev=" + prev); 1626 if (mNoAnimActivities.contains(prev)) { 1627 anim = false; 1628 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1629 } else { 1630 mWindowManager.prepareAppTransition(prev.task == next.task 1631 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1632 : AppTransition.TRANSIT_TASK_CLOSE, false); 1633 } 1634 mWindowManager.setAppWillBeHidden(prev.appToken); 1635 mWindowManager.setAppVisibility(prev.appToken, false); 1636 } else { 1637 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1638 if (mNoAnimActivities.contains(next)) { 1639 anim = false; 1640 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1641 } else { 1642 mWindowManager.prepareAppTransition(prev.task == next.task 1643 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1644 : AppTransition.TRANSIT_TASK_OPEN, false); 1645 } 1646 } 1647 if (false) { 1648 mWindowManager.setAppWillBeHidden(prev.appToken); 1649 mWindowManager.setAppVisibility(prev.appToken, false); 1650 } 1651 } else { 1652 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1653 if (mNoAnimActivities.contains(next)) { 1654 anim = false; 1655 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1656 } else { 1657 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1658 } 1659 } 1660 1661 Bundle resumeAnimOptions = null; 1662 if (anim) { 1663 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1664 if (opts != null) { 1665 resumeAnimOptions = opts.toBundle(); 1666 } 1667 next.applyOptionsLocked(); 1668 } else { 1669 next.clearOptionsLocked(); 1670 } 1671 1672 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1673 if (next.app != null && next.app.thread != null) { 1674 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1675 1676 // This activity is now becoming visible. 1677 mWindowManager.setAppVisibility(next.appToken, true); 1678 1679 // schedule launch ticks to collect information about slow apps. 1680 next.startLaunchTickingLocked(); 1681 1682 ActivityRecord lastResumedActivity = 1683 lastStack == null ? null :lastStack.mResumedActivity; 1684 ActivityState lastState = next.state; 1685 1686 mService.updateCpuStats(); 1687 1688 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1689 next.state = ActivityState.RESUMED; 1690 mResumedActivity = next; 1691 next.task.touchActiveTime(); 1692 mService.addRecentTaskLocked(next.task); 1693 mService.updateLruProcessLocked(next.app, true, null); 1694 updateLRUListLocked(next); 1695 mService.updateOomAdjLocked(); 1696 1697 // Have the window manager re-evaluate the orientation of 1698 // the screen based on the new activity order. 1699 boolean notUpdated = true; 1700 if (mStackSupervisor.isFrontStack(this)) { 1701 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1702 mService.mConfiguration, 1703 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1704 if (config != null) { 1705 next.frozenBeforeDestroy = true; 1706 } 1707 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1708 } 1709 1710 if (notUpdated) { 1711 // The configuration update wasn't able to keep the existing 1712 // instance of the activity, and instead started a new one. 1713 // We should be all done, but let's just make sure our activity 1714 // is still at the top and schedule another run if something 1715 // weird happened. 1716 ActivityRecord nextNext = topRunningActivityLocked(null); 1717 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1718 "Activity config changed during resume: " + next 1719 + ", new next: " + nextNext); 1720 if (nextNext != next) { 1721 // Do over! 1722 mStackSupervisor.scheduleResumeTopActivities(); 1723 } 1724 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1725 mNoAnimActivities.clear(); 1726 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1727 return true; 1728 } 1729 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1730 return false; 1731 } 1732 1733 try { 1734 // Deliver all pending results. 1735 ArrayList<ResultInfo> a = next.results; 1736 if (a != null) { 1737 final int N = a.size(); 1738 if (!next.finishing && N > 0) { 1739 if (DEBUG_RESULTS) Slog.v( 1740 TAG, "Delivering results to " + next 1741 + ": " + a); 1742 next.app.thread.scheduleSendResult(next.appToken, a); 1743 } 1744 } 1745 1746 if (next.newIntents != null) { 1747 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1748 } 1749 1750 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1751 next.userId, System.identityHashCode(next), 1752 next.task.taskId, next.shortComponentName); 1753 1754 next.sleeping = false; 1755 mService.showAskCompatModeDialogLocked(next); 1756 next.app.pendingUiClean = true; 1757 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1758 next.clearOptionsLocked(); 1759 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1760 mService.isNextTransitionForward(), resumeAnimOptions); 1761 1762 mStackSupervisor.checkReadyForSleepLocked(); 1763 1764 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1765 } catch (Exception e) { 1766 // Whoops, need to restart this activity! 1767 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1768 + lastState + ": " + next); 1769 next.state = lastState; 1770 if (lastStack != null) { 1771 lastStack.mResumedActivity = lastResumedActivity; 1772 } 1773 Slog.i(TAG, "Restarting because process died: " + next); 1774 if (!next.hasBeenLaunched) { 1775 next.hasBeenLaunched = true; 1776 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1777 mStackSupervisor.isFrontStack(lastStack)) { 1778 mWindowManager.setAppStartingWindow( 1779 next.appToken, next.packageName, next.theme, 1780 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1781 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1782 next.windowFlags, null, true); 1783 } 1784 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1785 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1786 return true; 1787 } 1788 1789 // From this point on, if something goes wrong there is no way 1790 // to recover the activity. 1791 try { 1792 next.visible = true; 1793 completeResumeLocked(next); 1794 } catch (Exception e) { 1795 // If any exception gets thrown, toss away this 1796 // activity and try the next one. 1797 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1798 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1799 "resume-exception", true); 1800 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1801 return true; 1802 } 1803 next.stopped = false; 1804 1805 } else { 1806 // Whoops, need to restart this activity! 1807 if (!next.hasBeenLaunched) { 1808 next.hasBeenLaunched = true; 1809 } else { 1810 if (SHOW_APP_STARTING_PREVIEW) { 1811 mWindowManager.setAppStartingWindow( 1812 next.appToken, next.packageName, next.theme, 1813 mService.compatibilityInfoForPackageLocked( 1814 next.info.applicationInfo), 1815 next.nonLocalizedLabel, 1816 next.labelRes, next.icon, next.logo, next.windowFlags, 1817 null, true); 1818 } 1819 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1820 } 1821 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1822 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1823 } 1824 1825 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1826 return true; 1827 } 1828 1829 private void insertTaskAtTop(TaskRecord task) { 1830 // If this is being moved to the top by another activity or being launched from the home 1831 // activity, set mOnTopOfHome accordingly. 1832 if (isOnHomeDisplay()) { 1833 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1834 final boolean fromHome = lastStack.isHomeStack(); 1835 if (!isHomeStack() && (fromHome || topTask() != task)) { 1836 task.mOnTopOfHome = fromHome; 1837 } 1838 } else { 1839 task.mOnTopOfHome = false; 1840 } 1841 1842 mTaskHistory.remove(task); 1843 // Now put task at top. 1844 int stackNdx = mTaskHistory.size(); 1845 if (!isCurrentProfileLocked(task.userId)) { 1846 // Put non-current user tasks below current user tasks. 1847 while (--stackNdx >= 0) { 1848 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1849 break; 1850 } 1851 } 1852 ++stackNdx; 1853 } 1854 mTaskHistory.add(stackNdx, task); 1855 updateTaskMovement(task, true); 1856 } 1857 1858 final void startActivityLocked(ActivityRecord r, boolean newTask, 1859 boolean doResume, boolean keepCurTransition, Bundle options) { 1860 TaskRecord rTask = r.task; 1861 final int taskId = rTask.taskId; 1862 if (taskForIdLocked(taskId) == null || newTask) { 1863 // Last activity in task had been removed or ActivityManagerService is reusing task. 1864 // Insert or replace. 1865 // Might not even be in. 1866 insertTaskAtTop(rTask); 1867 mWindowManager.moveTaskToTop(taskId); 1868 } 1869 TaskRecord task = null; 1870 if (!newTask) { 1871 // If starting in an existing task, find where that is... 1872 boolean startIt = true; 1873 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1874 task = mTaskHistory.get(taskNdx); 1875 if (task == r.task) { 1876 // Here it is! Now, if this is not yet visible to the 1877 // user, then just add it without starting; it will 1878 // get started when the user navigates back to it. 1879 if (!startIt) { 1880 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1881 + task, new RuntimeException("here").fillInStackTrace()); 1882 task.addActivityToTop(r); 1883 r.putInHistory(); 1884 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1885 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1886 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1887 r.userId, r.info.configChanges, task.voiceSession != null); 1888 if (VALIDATE_TOKENS) { 1889 validateAppTokensLocked(); 1890 } 1891 ActivityOptions.abort(options); 1892 return; 1893 } 1894 break; 1895 } else if (task.numFullscreen > 0) { 1896 startIt = false; 1897 } 1898 } 1899 } 1900 1901 // Place a new activity at top of stack, so it is next to interact 1902 // with the user. 1903 1904 // If we are not placing the new activity frontmost, we do not want 1905 // to deliver the onUserLeaving callback to the actual frontmost 1906 // activity 1907 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1908 mStackSupervisor.mUserLeaving = false; 1909 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1910 "startActivity() behind front, mUserLeaving=false"); 1911 } 1912 1913 task = r.task; 1914 1915 // Slot the activity into the history stack and proceed 1916 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1917 new RuntimeException("here").fillInStackTrace()); 1918 task.addActivityToTop(r); 1919 task.setFrontOfTask(); 1920 1921 r.putInHistory(); 1922 if (!isHomeStack() || numActivities() > 0) { 1923 // We want to show the starting preview window if we are 1924 // switching to a new task, or the next activity's process is 1925 // not currently running. 1926 boolean showStartingIcon = newTask; 1927 ProcessRecord proc = r.app; 1928 if (proc == null) { 1929 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1930 } 1931 if (proc == null || proc.thread == null) { 1932 showStartingIcon = true; 1933 } 1934 if (DEBUG_TRANSITION) Slog.v(TAG, 1935 "Prepare open transition: starting " + r); 1936 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1937 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1938 mNoAnimActivities.add(r); 1939 } else { 1940 mWindowManager.prepareAppTransition(newTask 1941 ? AppTransition.TRANSIT_TASK_OPEN 1942 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1943 mNoAnimActivities.remove(r); 1944 } 1945 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1946 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1947 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1948 r.info.configChanges, task.voiceSession != null); 1949 boolean doShow = true; 1950 if (newTask) { 1951 // Even though this activity is starting fresh, we still need 1952 // to reset it to make sure we apply affinities to move any 1953 // existing activities from other tasks in to it. 1954 // If the caller has requested that the target task be 1955 // reset, then do so. 1956 if ((r.intent.getFlags() 1957 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1958 resetTaskIfNeededLocked(r, r); 1959 doShow = topRunningNonDelayedActivityLocked(null) == r; 1960 } 1961 } 1962 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1963 // Figure out if we are transitioning from another activity that is 1964 // "has the same starting icon" as the next one. This allows the 1965 // window manager to keep the previous window it had previously 1966 // created, if it still had one. 1967 ActivityRecord prev = mResumedActivity; 1968 if (prev != null) { 1969 // We don't want to reuse the previous starting preview if: 1970 // (1) The current activity is in a different task. 1971 if (prev.task != r.task) { 1972 prev = null; 1973 } 1974 // (2) The current activity is already displayed. 1975 else if (prev.nowVisible) { 1976 prev = null; 1977 } 1978 } 1979 mWindowManager.setAppStartingWindow( 1980 r.appToken, r.packageName, r.theme, 1981 mService.compatibilityInfoForPackageLocked( 1982 r.info.applicationInfo), r.nonLocalizedLabel, 1983 r.labelRes, r.icon, r.logo, r.windowFlags, 1984 prev != null ? prev.appToken : null, showStartingIcon); 1985 r.mStartingWindowShown = true; 1986 } 1987 } else { 1988 // If this is the first activity, don't do any fancy animations, 1989 // because there is nothing for it to animate on top of. 1990 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1991 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1992 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1993 r.info.configChanges, task.voiceSession != null); 1994 ActivityOptions.abort(options); 1995 options = null; 1996 } 1997 if (VALIDATE_TOKENS) { 1998 validateAppTokensLocked(); 1999 } 2000 2001 if (doResume) { 2002 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 2003 } 2004 } 2005 2006 final void validateAppTokensLocked() { 2007 mValidateAppTokens.clear(); 2008 mValidateAppTokens.ensureCapacity(numActivities()); 2009 final int numTasks = mTaskHistory.size(); 2010 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2011 TaskRecord task = mTaskHistory.get(taskNdx); 2012 final ArrayList<ActivityRecord> activities = task.mActivities; 2013 if (activities.isEmpty()) { 2014 continue; 2015 } 2016 TaskGroup group = new TaskGroup(); 2017 group.taskId = task.taskId; 2018 mValidateAppTokens.add(group); 2019 final int numActivities = activities.size(); 2020 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2021 final ActivityRecord r = activities.get(activityNdx); 2022 group.tokens.add(r.appToken); 2023 } 2024 } 2025 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2026 } 2027 2028 /** 2029 * Perform a reset of the given task, if needed as part of launching it. 2030 * Returns the new HistoryRecord at the top of the task. 2031 */ 2032 /** 2033 * Helper method for #resetTaskIfNeededLocked. 2034 * We are inside of the task being reset... we'll either finish this activity, push it out 2035 * for another task, or leave it as-is. 2036 * @param task The task containing the Activity (taskTop) that might be reset. 2037 * @param forceReset 2038 * @return An ActivityOptions that needs to be processed. 2039 */ 2040 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2041 ActivityOptions topOptions = null; 2042 2043 int replyChainEnd = -1; 2044 boolean canMoveOptions = true; 2045 2046 // We only do this for activities that are not the root of the task (since if we finish 2047 // the root, we may no longer have the task!). 2048 final ArrayList<ActivityRecord> activities = task.mActivities; 2049 final int numActivities = activities.size(); 2050 for (int i = numActivities - 1; i > 0; --i ) { 2051 ActivityRecord target = activities.get(i); 2052 2053 final int flags = target.info.flags; 2054 final boolean finishOnTaskLaunch = 2055 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2056 final boolean allowTaskReparenting = 2057 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2058 final boolean clearWhenTaskReset = 2059 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2060 2061 if (!finishOnTaskLaunch 2062 && !clearWhenTaskReset 2063 && target.resultTo != null) { 2064 // If this activity is sending a reply to a previous 2065 // activity, we can't do anything with it now until 2066 // we reach the start of the reply chain. 2067 // XXX note that we are assuming the result is always 2068 // to the previous activity, which is almost always 2069 // the case but we really shouldn't count on. 2070 if (replyChainEnd < 0) { 2071 replyChainEnd = i; 2072 } 2073 } else if (!finishOnTaskLaunch 2074 && !clearWhenTaskReset 2075 && allowTaskReparenting 2076 && target.taskAffinity != null 2077 && !target.taskAffinity.equals(task.affinity)) { 2078 // If this activity has an affinity for another 2079 // task, then we need to move it out of here. We will 2080 // move it as far out of the way as possible, to the 2081 // bottom of the activity stack. This also keeps it 2082 // correctly ordered with any activities we previously 2083 // moved. 2084 final ThumbnailHolder newThumbHolder; 2085 final TaskRecord targetTask; 2086 final ActivityRecord bottom = 2087 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2088 mTaskHistory.get(0).mActivities.get(0) : null; 2089 if (bottom != null && target.taskAffinity != null 2090 && target.taskAffinity.equals(bottom.task.affinity)) { 2091 // If the activity currently at the bottom has the 2092 // same task affinity as the one we are moving, 2093 // then merge it into the same task. 2094 targetTask = bottom.task; 2095 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2096 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2097 + " out to bottom task " + bottom.task); 2098 } else { 2099 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2100 null, null, null, false); 2101 newThumbHolder = targetTask; 2102 targetTask.affinityIntent = target.intent; 2103 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2104 + " out to new task " + target.task); 2105 } 2106 2107 target.thumbHolder = newThumbHolder; 2108 2109 final int targetTaskId = targetTask.taskId; 2110 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2111 2112 boolean noOptions = canMoveOptions; 2113 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2114 for (int srcPos = start; srcPos >= i; --srcPos) { 2115 final ActivityRecord p = activities.get(srcPos); 2116 if (p.finishing) { 2117 continue; 2118 } 2119 2120 ThumbnailHolder curThumbHolder = p.thumbHolder; 2121 canMoveOptions = false; 2122 if (noOptions && topOptions == null) { 2123 topOptions = p.takeOptionsLocked(); 2124 if (topOptions != null) { 2125 noOptions = false; 2126 } 2127 } 2128 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2129 + task + " adding to task=" + targetTask 2130 + " Callers=" + Debug.getCallers(4)); 2131 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2132 + " out to target's task " + target.task); 2133 p.setTask(targetTask, curThumbHolder, false); 2134 targetTask.addActivityAtBottom(p); 2135 2136 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2137 } 2138 2139 mWindowManager.moveTaskToBottom(targetTaskId); 2140 if (VALIDATE_TOKENS) { 2141 validateAppTokensLocked(); 2142 } 2143 2144 replyChainEnd = -1; 2145 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2146 // If the activity should just be removed -- either 2147 // because it asks for it, or the task should be 2148 // cleared -- then finish it and anything that is 2149 // part of its reply chain. 2150 int end; 2151 if (clearWhenTaskReset) { 2152 // In this case, we want to finish this activity 2153 // and everything above it, so be sneaky and pretend 2154 // like these are all in the reply chain. 2155 end = numActivities - 1; 2156 } else if (replyChainEnd < 0) { 2157 end = i; 2158 } else { 2159 end = replyChainEnd; 2160 } 2161 boolean noOptions = canMoveOptions; 2162 for (int srcPos = i; srcPos <= end; srcPos++) { 2163 ActivityRecord p = activities.get(srcPos); 2164 if (p.finishing) { 2165 continue; 2166 } 2167 canMoveOptions = false; 2168 if (noOptions && topOptions == null) { 2169 topOptions = p.takeOptionsLocked(); 2170 if (topOptions != null) { 2171 noOptions = false; 2172 } 2173 } 2174 if (DEBUG_TASKS) Slog.w(TAG, 2175 "resetTaskIntendedTask: calling finishActivity on " + p); 2176 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2177 end--; 2178 srcPos--; 2179 } 2180 } 2181 replyChainEnd = -1; 2182 } else { 2183 // If we were in the middle of a chain, well the 2184 // activity that started it all doesn't want anything 2185 // special, so leave it all as-is. 2186 replyChainEnd = -1; 2187 } 2188 } 2189 2190 return topOptions; 2191 } 2192 2193 /** 2194 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2195 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2196 * @param affinityTask The task we are looking for an affinity to. 2197 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2198 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2199 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2200 */ 2201 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2202 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2203 int replyChainEnd = -1; 2204 final int taskId = task.taskId; 2205 final String taskAffinity = task.affinity; 2206 2207 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2208 final int numActivities = activities.size(); 2209 // Do not operate on the root Activity. 2210 for (int i = numActivities - 1; i > 0; --i) { 2211 ActivityRecord target = activities.get(i); 2212 2213 final int flags = target.info.flags; 2214 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2215 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2216 2217 if (target.resultTo != null) { 2218 // If this activity is sending a reply to a previous 2219 // activity, we can't do anything with it now until 2220 // we reach the start of the reply chain. 2221 // XXX note that we are assuming the result is always 2222 // to the previous activity, which is almost always 2223 // the case but we really shouldn't count on. 2224 if (replyChainEnd < 0) { 2225 replyChainEnd = i; 2226 } 2227 } else if (topTaskIsHigher 2228 && allowTaskReparenting 2229 && taskAffinity != null 2230 && taskAffinity.equals(target.taskAffinity)) { 2231 // This activity has an affinity for our task. Either remove it if we are 2232 // clearing or move it over to our task. Note that 2233 // we currently punt on the case where we are resetting a 2234 // task that is not at the top but who has activities above 2235 // with an affinity to it... this is really not a normal 2236 // case, and we will need to later pull that task to the front 2237 // and usually at that point we will do the reset and pick 2238 // up those remaining activities. (This only happens if 2239 // someone starts an activity in a new task from an activity 2240 // in a task that is not currently on top.) 2241 if (forceReset || finishOnTaskLaunch) { 2242 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2243 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2244 for (int srcPos = start; srcPos >= i; --srcPos) { 2245 final ActivityRecord p = activities.get(srcPos); 2246 if (p.finishing) { 2247 continue; 2248 } 2249 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2250 } 2251 } else { 2252 if (taskInsertionPoint < 0) { 2253 taskInsertionPoint = task.mActivities.size(); 2254 2255 } 2256 2257 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2258 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2259 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2260 for (int srcPos = start; srcPos >= i; --srcPos) { 2261 final ActivityRecord p = activities.get(srcPos); 2262 p.setTask(task, null, false); 2263 task.addActivityAtIndex(taskInsertionPoint, p); 2264 2265 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2266 + " to stack at " + task, 2267 new RuntimeException("here").fillInStackTrace()); 2268 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2269 + " in to resetting task " + task); 2270 mWindowManager.setAppGroupId(p.appToken, taskId); 2271 } 2272 mWindowManager.moveTaskToTop(taskId); 2273 if (VALIDATE_TOKENS) { 2274 validateAppTokensLocked(); 2275 } 2276 2277 // Now we've moved it in to place... but what if this is 2278 // a singleTop activity and we have put it on top of another 2279 // instance of the same activity? Then we drop the instance 2280 // below so it remains singleTop. 2281 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2282 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2283 int targetNdx = taskActivities.indexOf(target); 2284 if (targetNdx > 0) { 2285 ActivityRecord p = taskActivities.get(targetNdx - 1); 2286 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2287 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2288 false); 2289 } 2290 } 2291 } 2292 } 2293 2294 replyChainEnd = -1; 2295 } 2296 } 2297 return taskInsertionPoint; 2298 } 2299 2300 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2301 ActivityRecord newActivity) { 2302 boolean forceReset = 2303 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2304 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2305 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2306 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2307 forceReset = true; 2308 } 2309 } 2310 2311 final TaskRecord task = taskTop.task; 2312 2313 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2314 * for remaining tasks. Used for later tasks to reparent to task. */ 2315 boolean taskFound = false; 2316 2317 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2318 ActivityOptions topOptions = null; 2319 2320 // Preserve the location for reparenting in the new task. 2321 int reparentInsertionPoint = -1; 2322 2323 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2324 final TaskRecord targetTask = mTaskHistory.get(i); 2325 2326 if (targetTask == task) { 2327 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2328 taskFound = true; 2329 } else { 2330 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2331 taskFound, forceReset, reparentInsertionPoint); 2332 } 2333 } 2334 2335 int taskNdx = mTaskHistory.indexOf(task); 2336 do { 2337 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2338 } while (taskTop == null && taskNdx >= 0); 2339 2340 if (topOptions != null) { 2341 // If we got some ActivityOptions from an activity on top that 2342 // was removed from the task, propagate them to the new real top. 2343 if (taskTop != null) { 2344 taskTop.updateOptionsLocked(topOptions); 2345 } else { 2346 topOptions.abort(); 2347 } 2348 } 2349 2350 return taskTop; 2351 } 2352 2353 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2354 String resultWho, int requestCode, int resultCode, Intent data) { 2355 2356 if (callingUid > 0) { 2357 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2358 data, r.getUriPermissionsLocked()); 2359 } 2360 2361 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2362 + " : who=" + resultWho + " req=" + requestCode 2363 + " res=" + resultCode + " data=" + data); 2364 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2365 try { 2366 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2367 list.add(new ResultInfo(resultWho, requestCode, 2368 resultCode, data)); 2369 r.app.thread.scheduleSendResult(r.appToken, list); 2370 return; 2371 } catch (Exception e) { 2372 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2373 } 2374 } 2375 2376 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2377 } 2378 2379 private void adjustFocusedActivityLocked(ActivityRecord r) { 2380 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2381 ActivityRecord next = topRunningActivityLocked(null); 2382 if (next != r) { 2383 final TaskRecord task = r.task; 2384 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2385 mStackSupervisor.moveHomeToTop(); 2386 } 2387 } 2388 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2389 if (top != null) { 2390 mService.setFocusedActivityLocked(top); 2391 } 2392 } 2393 } 2394 2395 final void stopActivityLocked(ActivityRecord r) { 2396 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2397 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2398 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2399 if (!r.finishing) { 2400 if (!mService.isSleeping()) { 2401 if (DEBUG_STATES) { 2402 Slog.d(TAG, "no-history finish of " + r); 2403 } 2404 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2405 "no-history", false); 2406 } else { 2407 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2408 + " on stop because we're just sleeping"); 2409 } 2410 } 2411 } 2412 2413 if (r.app != null && r.app.thread != null) { 2414 adjustFocusedActivityLocked(r); 2415 r.resumeKeyDispatchingLocked(); 2416 try { 2417 r.stopped = false; 2418 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2419 + " (stop requested)"); 2420 r.state = ActivityState.STOPPING; 2421 if (DEBUG_VISBILITY) Slog.v( 2422 TAG, "Stopping visible=" + r.visible + " for " + r); 2423 if (!r.visible) { 2424 mWindowManager.setAppVisibility(r.appToken, false); 2425 } 2426 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2427 if (mService.isSleepingOrShuttingDown()) { 2428 r.setSleeping(true); 2429 } 2430 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2431 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2432 } catch (Exception e) { 2433 // Maybe just ignore exceptions here... if the process 2434 // has crashed, our death notification will clean things 2435 // up. 2436 Slog.w(TAG, "Exception thrown during pause", e); 2437 // Just in case, assume it to be stopped. 2438 r.stopped = true; 2439 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2440 r.state = ActivityState.STOPPED; 2441 if (r.configDestroy) { 2442 destroyActivityLocked(r, true, false, "stop-except"); 2443 } 2444 } 2445 } 2446 } 2447 2448 /** 2449 * @return Returns true if the activity is being finished, false if for 2450 * some reason it is being left as-is. 2451 */ 2452 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2453 Intent resultData, String reason, boolean oomAdj) { 2454 ActivityRecord r = isInStackLocked(token); 2455 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2456 TAG, "Finishing activity token=" + token + " r=" 2457 + ", result=" + resultCode + ", data=" + resultData 2458 + ", reason=" + reason); 2459 if (r == null) { 2460 return false; 2461 } 2462 2463 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2464 return true; 2465 } 2466 2467 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2468 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2469 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2470 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2471 ActivityRecord r = activities.get(activityNdx); 2472 if (r.resultTo == self && r.requestCode == requestCode) { 2473 if ((r.resultWho == null && resultWho == null) || 2474 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2475 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2476 false); 2477 } 2478 } 2479 } 2480 } 2481 mService.updateOomAdjLocked(); 2482 } 2483 2484 final void finishTopRunningActivityLocked(ProcessRecord app) { 2485 ActivityRecord r = topRunningActivityLocked(null); 2486 if (r != null && r.app == app) { 2487 // If the top running activity is from this crashing 2488 // process, then terminate it to avoid getting in a loop. 2489 Slog.w(TAG, " Force finishing activity " 2490 + r.intent.getComponent().flattenToShortString()); 2491 int taskNdx = mTaskHistory.indexOf(r.task); 2492 int activityNdx = r.task.mActivities.indexOf(r); 2493 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2494 // Also terminate any activities below it that aren't yet 2495 // stopped, to avoid a situation where one will get 2496 // re-start our crashing activity once it gets resumed again. 2497 --activityNdx; 2498 if (activityNdx < 0) { 2499 do { 2500 --taskNdx; 2501 if (taskNdx < 0) { 2502 break; 2503 } 2504 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2505 } while (activityNdx < 0); 2506 } 2507 if (activityNdx >= 0) { 2508 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2509 if (r.state == ActivityState.RESUMED 2510 || r.state == ActivityState.PAUSING 2511 || r.state == ActivityState.PAUSED) { 2512 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2513 Slog.w(TAG, " Force finishing activity " 2514 + r.intent.getComponent().flattenToShortString()); 2515 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2516 } 2517 } 2518 } 2519 } 2520 } 2521 2522 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2523 ArrayList<ActivityRecord> activities = r.task.mActivities; 2524 for (int index = activities.indexOf(r); index >= 0; --index) { 2525 ActivityRecord cur = activities.get(index); 2526 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2527 break; 2528 } 2529 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2530 } 2531 return true; 2532 } 2533 2534 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2535 // send the result 2536 ActivityRecord resultTo = r.resultTo; 2537 if (resultTo != null) { 2538 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2539 + " who=" + r.resultWho + " req=" + r.requestCode 2540 + " res=" + resultCode + " data=" + resultData); 2541 if (r.info.applicationInfo.uid > 0) { 2542 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2543 resultTo.packageName, resultData, 2544 resultTo.getUriPermissionsLocked()); 2545 } 2546 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2547 resultData); 2548 r.resultTo = null; 2549 } 2550 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2551 2552 // Make sure this HistoryRecord is not holding on to other resources, 2553 // because clients have remote IPC references to this object so we 2554 // can't assume that will go away and want to avoid circular IPC refs. 2555 r.results = null; 2556 r.pendingResults = null; 2557 r.newIntents = null; 2558 r.icicle = null; 2559 } 2560 2561 /** 2562 * @return Returns true if this activity has been removed from the history 2563 * list, or false if it is still in the list and will be removed later. 2564 */ 2565 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2566 String reason, boolean oomAdj) { 2567 if (r.finishing) { 2568 Slog.w(TAG, "Duplicate finish request for " + r); 2569 return false; 2570 } 2571 2572 r.makeFinishing(); 2573 final TaskRecord task = r.task; 2574 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2575 r.userId, System.identityHashCode(r), 2576 task.taskId, r.shortComponentName, reason); 2577 final ArrayList<ActivityRecord> activities = task.mActivities; 2578 final int index = activities.indexOf(r); 2579 if (index < (activities.size() - 1)) { 2580 task.setFrontOfTask(); 2581 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2582 // If the caller asked that this activity (and all above it) 2583 // be cleared when the task is reset, don't lose that information, 2584 // but propagate it up to the next activity. 2585 ActivityRecord next = activities.get(index+1); 2586 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2587 } 2588 } 2589 2590 r.pauseKeyDispatchingLocked(); 2591 2592 adjustFocusedActivityLocked(r); 2593 2594 finishActivityResultsLocked(r, resultCode, resultData); 2595 2596 if (mResumedActivity == r) { 2597 boolean endTask = index <= 0; 2598 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2599 "Prepare close transition: finishing " + r); 2600 mWindowManager.prepareAppTransition(endTask 2601 ? AppTransition.TRANSIT_TASK_CLOSE 2602 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2603 2604 // Tell window manager to prepare for this one to be removed. 2605 mWindowManager.setAppVisibility(r.appToken, false); 2606 2607 if (mPausingActivity == null) { 2608 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2609 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2610 startPausingLocked(false, false); 2611 } 2612 2613 if (endTask) { 2614 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2615 } 2616 } else if (r.state != ActivityState.PAUSING) { 2617 // If the activity is PAUSING, we will complete the finish once 2618 // it is done pausing; else we can just directly finish it here. 2619 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2620 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2621 } else { 2622 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2623 } 2624 2625 return false; 2626 } 2627 2628 static final int FINISH_IMMEDIATELY = 0; 2629 static final int FINISH_AFTER_PAUSE = 1; 2630 static final int FINISH_AFTER_VISIBLE = 2; 2631 2632 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2633 // First things first: if this activity is currently visible, 2634 // and the resumed activity is not yet visible, then hold off on 2635 // finishing until the resumed one becomes visible. 2636 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2637 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2638 mStackSupervisor.mStoppingActivities.add(r); 2639 if (mStackSupervisor.mStoppingActivities.size() > 3 2640 || r.frontOfTask && mTaskHistory.size() <= 1) { 2641 // If we already have a few activities waiting to stop, 2642 // then give up on things going idle and start clearing 2643 // them out. Or if r is the last of activity of the last task the stack 2644 // will be empty and must be cleared immediately. 2645 mStackSupervisor.scheduleIdleLocked(); 2646 } else { 2647 mStackSupervisor.checkReadyForSleepLocked(); 2648 } 2649 } 2650 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2651 + " (finish requested)"); 2652 r.state = ActivityState.STOPPING; 2653 if (oomAdj) { 2654 mService.updateOomAdjLocked(); 2655 } 2656 return r; 2657 } 2658 2659 // make sure the record is cleaned out of other places. 2660 mStackSupervisor.mStoppingActivities.remove(r); 2661 mStackSupervisor.mGoingToSleepActivities.remove(r); 2662 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2663 if (mResumedActivity == r) { 2664 mResumedActivity = null; 2665 } 2666 final ActivityState prevState = r.state; 2667 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2668 r.state = ActivityState.FINISHING; 2669 2670 if (mode == FINISH_IMMEDIATELY 2671 || prevState == ActivityState.STOPPED 2672 || prevState == ActivityState.INITIALIZING) { 2673 // If this activity is already stopped, we can just finish 2674 // it right now. 2675 boolean activityRemoved = destroyActivityLocked(r, true, 2676 oomAdj, "finish-imm"); 2677 if (activityRemoved) { 2678 mStackSupervisor.resumeTopActivitiesLocked(); 2679 } 2680 return activityRemoved ? null : r; 2681 } 2682 2683 // Need to go through the full pause cycle to get this 2684 // activity into the stopped state and then finish it. 2685 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2686 mStackSupervisor.mFinishingActivities.add(r); 2687 r.resumeKeyDispatchingLocked(); 2688 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2689 return r; 2690 } 2691 2692 void finishAllActivitiesLocked() { 2693 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2694 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2695 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2696 final ActivityRecord r = activities.get(activityNdx); 2697 if (r.finishing) { 2698 continue; 2699 } 2700 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2701 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2702 } 2703 } 2704 } 2705 2706 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2707 Intent resultData) { 2708 final ActivityRecord srec = ActivityRecord.forToken(token); 2709 final TaskRecord task = srec.task; 2710 final ArrayList<ActivityRecord> activities = task.mActivities; 2711 final int start = activities.indexOf(srec); 2712 if (!mTaskHistory.contains(task) || (start < 0)) { 2713 return false; 2714 } 2715 int finishTo = start - 1; 2716 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2717 boolean foundParentInTask = false; 2718 final ComponentName dest = destIntent.getComponent(); 2719 if (start > 0 && dest != null) { 2720 for (int i = finishTo; i >= 0; i--) { 2721 ActivityRecord r = activities.get(i); 2722 if (r.info.packageName.equals(dest.getPackageName()) && 2723 r.info.name.equals(dest.getClassName())) { 2724 finishTo = i; 2725 parent = r; 2726 foundParentInTask = true; 2727 break; 2728 } 2729 } 2730 } 2731 2732 IActivityController controller = mService.mController; 2733 if (controller != null) { 2734 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2735 if (next != null) { 2736 // ask watcher if this is allowed 2737 boolean resumeOK = true; 2738 try { 2739 resumeOK = controller.activityResuming(next.packageName); 2740 } catch (RemoteException e) { 2741 mService.mController = null; 2742 Watchdog.getInstance().setActivityController(null); 2743 } 2744 2745 if (!resumeOK) { 2746 return false; 2747 } 2748 } 2749 } 2750 final long origId = Binder.clearCallingIdentity(); 2751 for (int i = start; i > finishTo; i--) { 2752 ActivityRecord r = activities.get(i); 2753 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2754 // Only return the supplied result for the first activity finished 2755 resultCode = Activity.RESULT_CANCELED; 2756 resultData = null; 2757 } 2758 2759 if (parent != null && foundParentInTask) { 2760 final int parentLaunchMode = parent.info.launchMode; 2761 final int destIntentFlags = destIntent.getFlags(); 2762 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2763 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2764 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2765 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2766 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2767 } else { 2768 try { 2769 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2770 destIntent.getComponent(), 0, srec.userId); 2771 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2772 null, aInfo, null, null, parent.appToken, null, 2773 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2774 0, null, true, null, null); 2775 foundParentInTask = res == ActivityManager.START_SUCCESS; 2776 } catch (RemoteException e) { 2777 foundParentInTask = false; 2778 } 2779 requestFinishActivityLocked(parent.appToken, resultCode, 2780 resultData, "navigate-up", true); 2781 } 2782 } 2783 Binder.restoreCallingIdentity(origId); 2784 return foundParentInTask; 2785 } 2786 /** 2787 * Perform the common clean-up of an activity record. This is called both 2788 * as part of destroyActivityLocked() (when destroying the client-side 2789 * representation) and cleaning things up as a result of its hosting 2790 * processing going away, in which case there is no remaining client-side 2791 * state to destroy so only the cleanup here is needed. 2792 */ 2793 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2794 boolean setState) { 2795 if (mResumedActivity == r) { 2796 mResumedActivity = null; 2797 } 2798 if (mPausingActivity == r) { 2799 mPausingActivity = null; 2800 } 2801 mService.clearFocusedActivity(r); 2802 2803 r.configDestroy = false; 2804 r.frozenBeforeDestroy = false; 2805 2806 if (setState) { 2807 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2808 r.state = ActivityState.DESTROYED; 2809 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2810 r.app = null; 2811 } 2812 2813 // Make sure this record is no longer in the pending finishes list. 2814 // This could happen, for example, if we are trimming activities 2815 // down to the max limit while they are still waiting to finish. 2816 mStackSupervisor.mFinishingActivities.remove(r); 2817 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2818 2819 // Remove any pending results. 2820 if (r.finishing && r.pendingResults != null) { 2821 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2822 PendingIntentRecord rec = apr.get(); 2823 if (rec != null) { 2824 mService.cancelIntentSenderLocked(rec, false); 2825 } 2826 } 2827 r.pendingResults = null; 2828 } 2829 2830 if (cleanServices) { 2831 cleanUpActivityServicesLocked(r); 2832 } 2833 2834 // Get rid of any pending idle timeouts. 2835 removeTimeoutsForActivityLocked(r); 2836 } 2837 2838 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2839 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2840 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2841 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2842 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2843 r.finishLaunchTickingLocked(); 2844 } 2845 2846 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2847 mStackSupervisor.removeChildActivityContainers(r); 2848 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2849 r.makeFinishing(); 2850 if (DEBUG_ADD_REMOVE) { 2851 RuntimeException here = new RuntimeException("here"); 2852 here.fillInStackTrace(); 2853 Slog.i(TAG, "Removing activity " + r + " from stack"); 2854 } 2855 r.takeFromHistory(); 2856 removeTimeoutsForActivityLocked(r); 2857 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2858 r.state = ActivityState.DESTROYED; 2859 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2860 r.app = null; 2861 mWindowManager.removeAppToken(r.appToken); 2862 if (VALIDATE_TOKENS) { 2863 validateAppTokensLocked(); 2864 } 2865 final TaskRecord task = r.task; 2866 if (task != null && task.removeActivity(r)) { 2867 if (DEBUG_STACK) Slog.i(TAG, 2868 "removeActivityFromHistoryLocked: last activity removed from " + this); 2869 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2870 mStackSupervisor.moveHomeToTop(); 2871 } 2872 removeTask(task); 2873 } 2874 cleanUpActivityServicesLocked(r); 2875 r.removeUriPermissionsLocked(); 2876 } 2877 2878 /** 2879 * Perform clean-up of service connections in an activity record. 2880 */ 2881 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2882 // Throw away any services that have been bound by this activity. 2883 if (r.connections != null) { 2884 Iterator<ConnectionRecord> it = r.connections.iterator(); 2885 while (it.hasNext()) { 2886 ConnectionRecord c = it.next(); 2887 mService.mServices.removeConnectionLocked(c, null, r); 2888 } 2889 r.connections = null; 2890 } 2891 } 2892 2893 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2894 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2895 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2896 mHandler.sendMessage(msg); 2897 } 2898 2899 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2900 boolean lastIsOpaque = false; 2901 boolean activityRemoved = false; 2902 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2903 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2904 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2905 final ActivityRecord r = activities.get(activityNdx); 2906 if (r.finishing) { 2907 continue; 2908 } 2909 if (r.fullscreen) { 2910 lastIsOpaque = true; 2911 } 2912 if (owner != null && r.app != owner) { 2913 continue; 2914 } 2915 if (!lastIsOpaque) { 2916 continue; 2917 } 2918 // We can destroy this one if we have its icicle saved and 2919 // it is not in the process of pausing/stopping/finishing. 2920 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2921 && r.haveState && !r.visible && r.stopped 2922 && r.state != ActivityState.DESTROYING 2923 && r.state != ActivityState.DESTROYED) { 2924 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2925 + " resumed=" + mResumedActivity 2926 + " pausing=" + mPausingActivity); 2927 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2928 activityRemoved = true; 2929 } 2930 } 2931 } 2932 } 2933 if (activityRemoved) { 2934 mStackSupervisor.resumeTopActivitiesLocked(); 2935 } 2936 } 2937 2938 /** 2939 * Destroy the current CLIENT SIDE instance of an activity. This may be 2940 * called both when actually finishing an activity, or when performing 2941 * a configuration switch where we destroy the current client-side object 2942 * but then create a new client-side object for this same HistoryRecord. 2943 */ 2944 final boolean destroyActivityLocked(ActivityRecord r, 2945 boolean removeFromApp, boolean oomAdj, String reason) { 2946 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2947 TAG, "Removing activity from " + reason + ": token=" + r 2948 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2949 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2950 r.userId, System.identityHashCode(r), 2951 r.task.taskId, r.shortComponentName, reason); 2952 2953 boolean removedFromHistory = false; 2954 2955 cleanUpActivityLocked(r, false, false); 2956 2957 final boolean hadApp = r.app != null; 2958 2959 if (hadApp) { 2960 if (removeFromApp) { 2961 r.app.activities.remove(r); 2962 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2963 mService.mHeavyWeightProcess = null; 2964 mService.mHandler.sendEmptyMessage( 2965 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2966 } 2967 if (r.app.activities.isEmpty()) { 2968 // No longer have activities, so update LRU list and oom adj. 2969 mService.updateLruProcessLocked(r.app, false, null); 2970 mService.updateOomAdjLocked(); 2971 } 2972 } 2973 2974 boolean skipDestroy = false; 2975 2976 try { 2977 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2978 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2979 r.configChangeFlags); 2980 } catch (Exception e) { 2981 // We can just ignore exceptions here... if the process 2982 // has crashed, our death notification will clean things 2983 // up. 2984 //Slog.w(TAG, "Exception thrown during finish", e); 2985 if (r.finishing) { 2986 removeActivityFromHistoryLocked(r); 2987 removedFromHistory = true; 2988 skipDestroy = true; 2989 } 2990 } 2991 2992 r.nowVisible = false; 2993 2994 // If the activity is finishing, we need to wait on removing it 2995 // from the list to give it a chance to do its cleanup. During 2996 // that time it may make calls back with its token so we need to 2997 // be able to find it on the list and so we don't want to remove 2998 // it from the list yet. Otherwise, we can just immediately put 2999 // it in the destroyed state since we are not removing it from the 3000 // list. 3001 if (r.finishing && !skipDestroy) { 3002 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 3003 + " (destroy requested)"); 3004 r.state = ActivityState.DESTROYING; 3005 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 3006 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3007 } else { 3008 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3009 r.state = ActivityState.DESTROYED; 3010 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3011 r.app = null; 3012 } 3013 } else { 3014 // remove this record from the history. 3015 if (r.finishing) { 3016 removeActivityFromHistoryLocked(r); 3017 removedFromHistory = true; 3018 } else { 3019 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3020 r.state = ActivityState.DESTROYED; 3021 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3022 r.app = null; 3023 } 3024 } 3025 3026 r.configChangeFlags = 0; 3027 3028 if (!mLRUActivities.remove(r) && hadApp) { 3029 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3030 } 3031 3032 return removedFromHistory; 3033 } 3034 3035 final void activityDestroyedLocked(IBinder token) { 3036 final long origId = Binder.clearCallingIdentity(); 3037 try { 3038 ActivityRecord r = ActivityRecord.forToken(token); 3039 if (r != null) { 3040 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3041 } 3042 3043 if (isInStackLocked(token) != null) { 3044 if (r.state == ActivityState.DESTROYING) { 3045 cleanUpActivityLocked(r, true, false); 3046 removeActivityFromHistoryLocked(r); 3047 } 3048 } 3049 mStackSupervisor.resumeTopActivitiesLocked(); 3050 } finally { 3051 Binder.restoreCallingIdentity(origId); 3052 } 3053 } 3054 3055 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3056 ProcessRecord app, String listName) { 3057 int i = list.size(); 3058 if (DEBUG_CLEANUP) Slog.v( 3059 TAG, "Removing app " + app + " from list " + listName 3060 + " with " + i + " entries"); 3061 while (i > 0) { 3062 i--; 3063 ActivityRecord r = list.get(i); 3064 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3065 if (r.app == app) { 3066 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3067 list.remove(i); 3068 removeTimeoutsForActivityLocked(r); 3069 } 3070 } 3071 } 3072 3073 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3074 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3075 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3076 "mStoppingActivities"); 3077 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3078 "mGoingToSleepActivities"); 3079 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3080 "mWaitingVisibleActivities"); 3081 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3082 "mFinishingActivities"); 3083 3084 boolean hasVisibleActivities = false; 3085 3086 // Clean out the history list. 3087 int i = numActivities(); 3088 if (DEBUG_CLEANUP) Slog.v( 3089 TAG, "Removing app " + app + " from history with " + i + " entries"); 3090 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3091 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3092 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3093 final ActivityRecord r = activities.get(activityNdx); 3094 --i; 3095 if (DEBUG_CLEANUP) Slog.v( 3096 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3097 if (r.app == app) { 3098 boolean remove; 3099 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3100 // Don't currently have state for the activity, or 3101 // it is finishing -- always remove it. 3102 remove = true; 3103 } else if (r.launchCount > 2 && 3104 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3105 // We have launched this activity too many times since it was 3106 // able to run, so give up and remove it. 3107 remove = true; 3108 } else { 3109 // The process may be gone, but the activity lives on! 3110 remove = false; 3111 } 3112 if (remove) { 3113 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3114 RuntimeException here = new RuntimeException("here"); 3115 here.fillInStackTrace(); 3116 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3117 + ": haveState=" + r.haveState 3118 + " stateNotNeeded=" + r.stateNotNeeded 3119 + " finishing=" + r.finishing 3120 + " state=" + r.state, here); 3121 } 3122 if (!r.finishing) { 3123 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3124 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3125 r.userId, System.identityHashCode(r), 3126 r.task.taskId, r.shortComponentName, 3127 "proc died without state saved"); 3128 if (r.state == ActivityState.RESUMED) { 3129 mService.updateUsageStats(r, false); 3130 } 3131 } 3132 removeActivityFromHistoryLocked(r); 3133 3134 } else { 3135 // We have the current state for this activity, so 3136 // it can be restarted later when needed. 3137 if (localLOGV) Slog.v( 3138 TAG, "Keeping entry, setting app to null"); 3139 if (r.visible) { 3140 hasVisibleActivities = true; 3141 } 3142 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3143 + r); 3144 r.app = null; 3145 r.nowVisible = false; 3146 if (!r.haveState) { 3147 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3148 "App died, clearing saved state of " + r); 3149 r.icicle = null; 3150 } 3151 } 3152 3153 cleanUpActivityLocked(r, true, true); 3154 } 3155 } 3156 } 3157 3158 return hasVisibleActivities; 3159 } 3160 3161 final void updateTransitLocked(int transit, Bundle options) { 3162 if (options != null) { 3163 ActivityRecord r = topRunningActivityLocked(null); 3164 if (r != null && r.state != ActivityState.RESUMED) { 3165 r.updateOptionsLocked(options); 3166 } else { 3167 ActivityOptions.abort(options); 3168 } 3169 } 3170 mWindowManager.prepareAppTransition(transit, false); 3171 } 3172 3173 void updateTaskMovement(TaskRecord task, boolean toFront) { 3174 if (task.isPersistable) { 3175 task.mLastTimeMoved = System.currentTimeMillis(); 3176 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3177 // recently will be most negative, tasks sent to the bottom before that will be less 3178 // negative. Similarly for recent tasks moved to the top which will be most positive. 3179 if (!toFront) { 3180 task.mLastTimeMoved *= -1; 3181 } 3182 } 3183 } 3184 3185 void moveHomeTaskToTop() { 3186 final int top = mTaskHistory.size() - 1; 3187 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3188 final TaskRecord task = mTaskHistory.get(taskNdx); 3189 if (task.isHomeTask()) { 3190 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3191 mTaskHistory.remove(taskNdx); 3192 mTaskHistory.add(top, task); 3193 updateTaskMovement(task, true); 3194 mWindowManager.moveTaskToTop(task.taskId); 3195 return; 3196 } 3197 } 3198 } 3199 3200 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3201 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3202 3203 final int numTasks = mTaskHistory.size(); 3204 final int index = mTaskHistory.indexOf(tr); 3205 if (numTasks == 0 || index < 0) { 3206 // nothing to do! 3207 if (reason != null && 3208 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3209 ActivityOptions.abort(options); 3210 } else { 3211 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3212 } 3213 return; 3214 } 3215 3216 moveToFront(); 3217 3218 // Shift all activities with this task up to the top 3219 // of the stack, keeping them in the same internal order. 3220 insertTaskAtTop(tr); 3221 3222 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3223 if (reason != null && 3224 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3225 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3226 ActivityRecord r = topRunningActivityLocked(null); 3227 if (r != null) { 3228 mNoAnimActivities.add(r); 3229 } 3230 ActivityOptions.abort(options); 3231 } else { 3232 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3233 } 3234 3235 mWindowManager.moveTaskToTop(tr.taskId); 3236 3237 mStackSupervisor.resumeTopActivitiesLocked(); 3238 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3239 3240 if (VALIDATE_TOKENS) { 3241 validateAppTokensLocked(); 3242 } 3243 } 3244 3245 /** 3246 * Worker method for rearranging history stack. Implements the function of moving all 3247 * activities for a specific task (gathering them if disjoint) into a single group at the 3248 * bottom of the stack. 3249 * 3250 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3251 * to premeptively cancel the move. 3252 * 3253 * @param taskId The taskId to collect and move to the bottom. 3254 * @return Returns true if the move completed, false if not. 3255 */ 3256 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3257 final TaskRecord tr = taskForIdLocked(taskId); 3258 if (tr == null) { 3259 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3260 return false; 3261 } 3262 3263 Slog.i(TAG, "moveTaskToBack: " + tr); 3264 3265 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3266 3267 // If we have a watcher, preflight the move before committing to it. First check 3268 // for *other* available tasks, but if none are available, then try again allowing the 3269 // current task to be selected. 3270 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3271 ActivityRecord next = topRunningActivityLocked(null, taskId); 3272 if (next == null) { 3273 next = topRunningActivityLocked(null, 0); 3274 } 3275 if (next != null) { 3276 // ask watcher if this is allowed 3277 boolean moveOK = true; 3278 try { 3279 moveOK = mService.mController.activityResuming(next.packageName); 3280 } catch (RemoteException e) { 3281 mService.mController = null; 3282 Watchdog.getInstance().setActivityController(null); 3283 } 3284 if (!moveOK) { 3285 return false; 3286 } 3287 } 3288 } 3289 3290 if (DEBUG_TRANSITION) Slog.v(TAG, 3291 "Prepare to back transition: task=" + taskId); 3292 3293 mTaskHistory.remove(tr); 3294 mTaskHistory.add(0, tr); 3295 updateTaskMovement(tr, false); 3296 3297 // There is an assumption that moving a task to the back moves it behind the home activity. 3298 // We make sure here that some activity in the stack will launch home. 3299 int numTasks = mTaskHistory.size(); 3300 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3301 final TaskRecord task = mTaskHistory.get(taskNdx); 3302 if (task.mOnTopOfHome) { 3303 break; 3304 } 3305 if (taskNdx == 1) { 3306 // Set the last task before tr to go to home. 3307 task.mOnTopOfHome = true; 3308 } 3309 } 3310 3311 if (reason != null && 3312 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3313 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3314 ActivityRecord r = topRunningActivityLocked(null); 3315 if (r != null) { 3316 mNoAnimActivities.add(r); 3317 } 3318 } else { 3319 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3320 } 3321 mWindowManager.moveTaskToBottom(taskId); 3322 3323 if (VALIDATE_TOKENS) { 3324 validateAppTokensLocked(); 3325 } 3326 3327 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3328 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3329 tr.mOnTopOfHome = false; 3330 return mStackSupervisor.resumeHomeActivity(null); 3331 } 3332 3333 mStackSupervisor.resumeTopActivitiesLocked(); 3334 return true; 3335 } 3336 3337 static final void logStartActivity(int tag, ActivityRecord r, 3338 TaskRecord task) { 3339 final Uri data = r.intent.getData(); 3340 final String strData = data != null ? data.toSafeString() : null; 3341 3342 EventLog.writeEvent(tag, 3343 r.userId, System.identityHashCode(r), task.taskId, 3344 r.shortComponentName, r.intent.getAction(), 3345 r.intent.getType(), strData, r.intent.getFlags()); 3346 } 3347 3348 /** 3349 * Make sure the given activity matches the current configuration. Returns 3350 * false if the activity had to be destroyed. Returns true if the 3351 * configuration is the same, or the activity will remain running as-is 3352 * for whatever reason. Ensures the HistoryRecord is updated with the 3353 * correct configuration and all other bookkeeping is handled. 3354 */ 3355 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3356 int globalChanges) { 3357 if (mConfigWillChange) { 3358 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3359 "Skipping config check (will change): " + r); 3360 return true; 3361 } 3362 3363 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3364 "Ensuring correct configuration: " + r); 3365 3366 // Short circuit: if the two configurations are the exact same 3367 // object (the common case), then there is nothing to do. 3368 Configuration newConfig = mService.mConfiguration; 3369 if (r.configuration == newConfig && !r.forceNewConfig) { 3370 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3371 "Configuration unchanged in " + r); 3372 return true; 3373 } 3374 3375 // We don't worry about activities that are finishing. 3376 if (r.finishing) { 3377 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3378 "Configuration doesn't matter in finishing " + r); 3379 r.stopFreezingScreenLocked(false); 3380 return true; 3381 } 3382 3383 // Okay we now are going to make this activity have the new config. 3384 // But then we need to figure out how it needs to deal with that. 3385 Configuration oldConfig = r.configuration; 3386 r.configuration = newConfig; 3387 3388 // Determine what has changed. May be nothing, if this is a config 3389 // that has come back from the app after going idle. In that case 3390 // we just want to leave the official config object now in the 3391 // activity and do nothing else. 3392 final int changes = oldConfig.diff(newConfig); 3393 if (changes == 0 && !r.forceNewConfig) { 3394 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3395 "Configuration no differences in " + r); 3396 return true; 3397 } 3398 3399 // If the activity isn't currently running, just leave the new 3400 // configuration and it will pick that up next time it starts. 3401 if (r.app == null || r.app.thread == null) { 3402 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3403 "Configuration doesn't matter not running " + r); 3404 r.stopFreezingScreenLocked(false); 3405 r.forceNewConfig = false; 3406 return true; 3407 } 3408 3409 // Figure out how to handle the changes between the configurations. 3410 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3411 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3412 + Integer.toHexString(changes) + ", handles=0x" 3413 + Integer.toHexString(r.info.getRealConfigChanged()) 3414 + ", newConfig=" + newConfig); 3415 } 3416 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3417 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3418 r.configChangeFlags |= changes; 3419 r.startFreezingScreenLocked(r.app, globalChanges); 3420 r.forceNewConfig = false; 3421 if (r.app == null || r.app.thread == null) { 3422 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3423 "Config is destroying non-running " + r); 3424 destroyActivityLocked(r, true, false, "config"); 3425 } else if (r.state == ActivityState.PAUSING) { 3426 // A little annoying: we are waiting for this activity to 3427 // finish pausing. Let's not do anything now, but just 3428 // flag that it needs to be restarted when done pausing. 3429 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3430 "Config is skipping already pausing " + r); 3431 r.configDestroy = true; 3432 return true; 3433 } else if (r.state == ActivityState.RESUMED) { 3434 // Try to optimize this case: the configuration is changing 3435 // and we need to restart the top, resumed activity. 3436 // Instead of doing the normal handshaking, just say 3437 // "restart!". 3438 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3439 "Config is relaunching resumed " + r); 3440 relaunchActivityLocked(r, r.configChangeFlags, true); 3441 r.configChangeFlags = 0; 3442 } else { 3443 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3444 "Config is relaunching non-resumed " + r); 3445 relaunchActivityLocked(r, r.configChangeFlags, false); 3446 r.configChangeFlags = 0; 3447 } 3448 3449 // All done... tell the caller we weren't able to keep this 3450 // activity around. 3451 return false; 3452 } 3453 3454 // Default case: the activity can handle this new configuration, so 3455 // hand it over. Note that we don't need to give it the new 3456 // configuration, since we always send configuration changes to all 3457 // process when they happen so it can just use whatever configuration 3458 // it last got. 3459 if (r.app != null && r.app.thread != null) { 3460 try { 3461 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3462 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3463 } catch (RemoteException e) { 3464 // If process died, whatever. 3465 } 3466 } 3467 r.stopFreezingScreenLocked(false); 3468 3469 return true; 3470 } 3471 3472 private boolean relaunchActivityLocked(ActivityRecord r, 3473 int changes, boolean andResume) { 3474 List<ResultInfo> results = null; 3475 List<Intent> newIntents = null; 3476 if (andResume) { 3477 results = r.results; 3478 newIntents = r.newIntents; 3479 } 3480 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3481 + " with results=" + results + " newIntents=" + newIntents 3482 + " andResume=" + andResume); 3483 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3484 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3485 r.task.taskId, r.shortComponentName); 3486 3487 r.startFreezingScreenLocked(r.app, 0); 3488 3489 mStackSupervisor.removeChildActivityContainers(r); 3490 3491 try { 3492 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3493 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3494 + r); 3495 r.forceNewConfig = false; 3496 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3497 changes, !andResume, new Configuration(mService.mConfiguration)); 3498 // Note: don't need to call pauseIfSleepingLocked() here, because 3499 // the caller will only pass in 'andResume' if this activity is 3500 // currently resumed, which implies we aren't sleeping. 3501 } catch (RemoteException e) { 3502 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3503 } 3504 3505 if (andResume) { 3506 r.results = null; 3507 r.newIntents = null; 3508 r.state = ActivityState.RESUMED; 3509 } else { 3510 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3511 r.state = ActivityState.PAUSED; 3512 } 3513 3514 return true; 3515 } 3516 3517 boolean willActivityBeVisibleLocked(IBinder token) { 3518 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3519 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3520 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3521 final ActivityRecord r = activities.get(activityNdx); 3522 if (r.appToken == token) { 3523 return true; 3524 } 3525 if (r.fullscreen && !r.finishing) { 3526 return false; 3527 } 3528 } 3529 } 3530 final ActivityRecord r = ActivityRecord.forToken(token); 3531 if (r == null) { 3532 return false; 3533 } 3534 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3535 + " would have returned true for r=" + r); 3536 return !r.finishing; 3537 } 3538 3539 void closeSystemDialogsLocked() { 3540 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3541 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3542 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3543 final ActivityRecord r = activities.get(activityNdx); 3544 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3545 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3546 } 3547 } 3548 } 3549 } 3550 3551 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3552 boolean didSomething = false; 3553 TaskRecord lastTask = null; 3554 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3555 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3556 int numActivities = activities.size(); 3557 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3558 ActivityRecord r = activities.get(activityNdx); 3559 final boolean samePackage = r.packageName.equals(name) 3560 || (name == null && r.userId == userId); 3561 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3562 && (samePackage || r.task == lastTask) 3563 && (r.app == null || evenPersistent || !r.app.persistent)) { 3564 if (!doit) { 3565 if (r.finishing) { 3566 // If this activity is just finishing, then it is not 3567 // interesting as far as something to stop. 3568 continue; 3569 } 3570 return true; 3571 } 3572 didSomething = true; 3573 Slog.i(TAG, " Force finishing activity " + r); 3574 if (samePackage) { 3575 if (r.app != null) { 3576 r.app.removed = true; 3577 } 3578 r.app = null; 3579 } 3580 lastTask = r.task; 3581 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3582 true)) { 3583 // r has been deleted from mActivities, accommodate. 3584 --numActivities; 3585 --activityNdx; 3586 } 3587 } 3588 } 3589 } 3590 return didSomething; 3591 } 3592 3593 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3594 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3595 final TaskRecord task = mTaskHistory.get(taskNdx); 3596 ActivityRecord r = null; 3597 ActivityRecord top = null; 3598 int numActivities = 0; 3599 int numRunning = 0; 3600 final ArrayList<ActivityRecord> activities = task.mActivities; 3601 if (activities.isEmpty()) { 3602 continue; 3603 } 3604 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3605 continue; 3606 } 3607 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3608 r = activities.get(activityNdx); 3609 3610 // Initialize state for next task if needed. 3611 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3612 top = r; 3613 numActivities = numRunning = 0; 3614 } 3615 3616 // Add 'r' into the current task. 3617 numActivities++; 3618 if (r.app != null && r.app.thread != null) { 3619 numRunning++; 3620 } 3621 3622 if (localLOGV) Slog.v( 3623 TAG, r.intent.getComponent().flattenToShortString() 3624 + ": task=" + r.task); 3625 } 3626 3627 RunningTaskInfo ci = new RunningTaskInfo(); 3628 ci.id = task.taskId; 3629 ci.baseActivity = r.intent.getComponent(); 3630 ci.topActivity = top.intent.getComponent(); 3631 ci.lastActiveTime = task.lastActiveTime; 3632 3633 if (top.thumbHolder != null) { 3634 ci.description = top.thumbHolder.lastDescription; 3635 } 3636 ci.numActivities = numActivities; 3637 ci.numRunning = numRunning; 3638 //System.out.println( 3639 // "#" + maxNum + ": " + " descr=" + ci.description); 3640 list.add(ci); 3641 } 3642 } 3643 3644 public void unhandledBackLocked() { 3645 final int top = mTaskHistory.size() - 1; 3646 if (DEBUG_SWITCH) Slog.d( 3647 TAG, "Performing unhandledBack(): top activity at " + top); 3648 if (top >= 0) { 3649 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3650 int activityTop = activities.size() - 1; 3651 if (activityTop > 0) { 3652 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3653 "unhandled-back", true); 3654 } 3655 } 3656 } 3657 3658 /** 3659 * Reset local parameters because an app's activity died. 3660 * @param app The app of the activity that died. 3661 * @return result from removeHistoryRecordsForAppLocked. 3662 */ 3663 boolean handleAppDiedLocked(ProcessRecord app) { 3664 if (mPausingActivity != null && mPausingActivity.app == app) { 3665 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3666 "App died while pausing: " + mPausingActivity); 3667 mPausingActivity = null; 3668 } 3669 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3670 mLastPausedActivity = null; 3671 mLastNoHistoryActivity = null; 3672 } 3673 3674 return removeHistoryRecordsForAppLocked(app); 3675 } 3676 3677 void handleAppCrashLocked(ProcessRecord app) { 3678 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3679 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3680 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3681 final ActivityRecord r = activities.get(activityNdx); 3682 if (r.app == app) { 3683 Slog.w(TAG, " Force finishing activity " 3684 + r.intent.getComponent().flattenToShortString()); 3685 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3686 } 3687 } 3688 } 3689 } 3690 3691 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3692 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3693 boolean printed = false; 3694 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3695 final TaskRecord task = mTaskHistory.get(taskNdx); 3696 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3697 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3698 dumpClient, dumpPackage, needSep, header, 3699 " Task id #" + task.taskId); 3700 if (printed) { 3701 header = null; 3702 } 3703 } 3704 return printed; 3705 } 3706 3707 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3708 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3709 3710 if ("all".equals(name)) { 3711 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3712 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3713 } 3714 } else if ("top".equals(name)) { 3715 final int top = mTaskHistory.size() - 1; 3716 if (top >= 0) { 3717 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3718 int listTop = list.size() - 1; 3719 if (listTop >= 0) { 3720 activities.add(list.get(listTop)); 3721 } 3722 } 3723 } else { 3724 ItemMatcher matcher = new ItemMatcher(); 3725 matcher.build(name); 3726 3727 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3728 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3729 if (matcher.match(r1, r1.intent.getComponent())) { 3730 activities.add(r1); 3731 } 3732 } 3733 } 3734 } 3735 3736 return activities; 3737 } 3738 3739 ActivityRecord restartPackage(String packageName) { 3740 ActivityRecord starting = topRunningActivityLocked(null); 3741 3742 // All activities that came from the package must be 3743 // restarted as if there was a config change. 3744 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3745 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3746 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3747 final ActivityRecord a = activities.get(activityNdx); 3748 if (a.info.packageName.equals(packageName)) { 3749 a.forceNewConfig = true; 3750 if (starting != null && a == starting && a.visible) { 3751 a.startFreezingScreenLocked(starting.app, 3752 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3753 } 3754 } 3755 } 3756 } 3757 3758 return starting; 3759 } 3760 3761 void removeTask(TaskRecord task) { 3762 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3763 mWindowManager.removeTask(task.taskId); 3764 final ActivityRecord r = mResumedActivity; 3765 if (r != null && r.task == task) { 3766 mResumedActivity = null; 3767 } 3768 3769 final int taskNdx = mTaskHistory.indexOf(task); 3770 final int topTaskNdx = mTaskHistory.size() - 1; 3771 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3772 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3773 } 3774 mTaskHistory.remove(task); 3775 updateTaskMovement(task, true); 3776 3777 if (task.mActivities.isEmpty()) { 3778 final boolean isVoiceSession = task.voiceSession != null; 3779 if (isVoiceSession) { 3780 try { 3781 task.voiceSession.taskFinished(task.intent, task.taskId); 3782 } catch (RemoteException e) { 3783 } 3784 } 3785 if (task.autoRemoveFromRecents() || isVoiceSession) { 3786 // Task creator asked to remove this when done, or this task was a voice 3787 // interaction, so it should not remain on the recent tasks list. 3788 mService.mRecentTasks.remove(task); 3789 } 3790 } 3791 3792 if (mTaskHistory.isEmpty()) { 3793 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3794 if (isOnHomeDisplay()) { 3795 mStackSupervisor.moveHomeStack(!isHomeStack()); 3796 } 3797 if (mStacks != null) { 3798 mStacks.remove(this); 3799 mStacks.add(0, this); 3800 } 3801 } 3802 } 3803 3804 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3805 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3806 boolean toTop) { 3807 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3808 voiceInteractor); 3809 addTask(task, toTop, false); 3810 return task; 3811 } 3812 3813 ArrayList<TaskRecord> getAllTasks() { 3814 return new ArrayList<TaskRecord>(mTaskHistory); 3815 } 3816 3817 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3818 task.stack = this; 3819 if (toTop) { 3820 insertTaskAtTop(task); 3821 } else { 3822 mTaskHistory.add(0, task); 3823 updateTaskMovement(task, false); 3824 } 3825 if (!moving && task.voiceSession != null) { 3826 try { 3827 task.voiceSession.taskStarted(task.intent, task.taskId); 3828 } catch (RemoteException e) { 3829 } 3830 } 3831 } 3832 3833 public int getStackId() { 3834 return mStackId; 3835 } 3836 3837 @Override 3838 public String toString() { 3839 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3840 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3841 } 3842} 3843