ActivityStack.java revision df6523f2703920a1d2a84c45b862b325b8cebf40
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.ActivityRecord.HOME_ACTIVITY_TYPE; 34import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE; 35import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE; 36 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 38import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 39import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 40import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS; 41import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 42import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 43 44import android.service.voice.IVoiceInteractionSession; 45import com.android.internal.app.IVoiceInteractor; 46import com.android.internal.os.BatteryStatsImpl; 47import com.android.server.Watchdog; 48import com.android.server.am.ActivityManagerService.ItemMatcher; 49import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 50import com.android.server.wm.AppTransition; 51import com.android.server.wm.TaskGroup; 52import com.android.server.wm.WindowManagerService; 53 54import android.app.Activity; 55import android.app.ActivityManager; 56import android.app.ActivityOptions; 57import android.app.AppGlobals; 58import android.app.IActivityController; 59import android.app.ResultInfo; 60import android.app.ActivityManager.RunningTaskInfo; 61import android.content.ComponentName; 62import android.content.Intent; 63import android.content.pm.ActivityInfo; 64import android.content.pm.PackageManager; 65import android.content.res.Configuration; 66import android.content.res.Resources; 67import android.graphics.Bitmap; 68import android.net.Uri; 69import android.os.Binder; 70import android.os.Bundle; 71import android.os.Debug; 72import android.os.Handler; 73import android.os.IBinder; 74import android.os.Looper; 75import android.os.Message; 76import android.os.PersistableBundle; 77import android.os.RemoteException; 78import android.os.SystemClock; 79import android.os.Trace; 80import android.os.UserHandle; 81import android.util.EventLog; 82import android.util.Slog; 83import android.view.Display; 84 85import java.io.FileDescriptor; 86import java.io.PrintWriter; 87import java.lang.ref.WeakReference; 88import java.util.ArrayList; 89import java.util.Iterator; 90import java.util.List; 91import java.util.Objects; 92 93/** 94 * State and management of a single stack of activities. 95 */ 96final class ActivityStack { 97 98 // Ticks during which we check progress while waiting for an app to launch. 99 static final int LAUNCH_TICK = 500; 100 101 // How long we wait until giving up on the last activity to pause. This 102 // is short because it directly impacts the responsiveness of starting the 103 // next activity. 104 static final int PAUSE_TIMEOUT = 500; 105 106 // How long we wait for the activity to tell us it has stopped before 107 // giving up. This is a good amount of time because we really need this 108 // from the application in order to get its saved state. 109 static final int STOP_TIMEOUT = 10*1000; 110 111 // How long we wait until giving up on an activity telling us it has 112 // finished destroying itself. 113 static final int DESTROY_TIMEOUT = 10*1000; 114 115 // How long until we reset a task when the user returns to it. Currently 116 // disabled. 117 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 118 119 // How long between activity launches that we consider safe to not warn 120 // the user about an unexpected activity being launched on top. 121 static final long START_WARN_TIME = 5*1000; 122 123 // Set to false to disable the preview that is shown while a new activity 124 // is being started. 125 static final boolean SHOW_APP_STARTING_PREVIEW = true; 126 127 // How long to wait for all background Activities to redraw following a call to 128 // convertToTranslucent(). 129 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 130 131 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 132 133 enum ActivityState { 134 INITIALIZING, 135 RESUMED, 136 PAUSING, 137 PAUSED, 138 STOPPING, 139 STOPPED, 140 FINISHING, 141 DESTROYING, 142 DESTROYED 143 } 144 145 final ActivityManagerService mService; 146 final WindowManagerService mWindowManager; 147 148 /** 149 * The back history of all previous (and possibly still 150 * running) activities. It contains #TaskRecord objects. 151 */ 152 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 153 154 /** 155 * Used for validating app tokens with window manager. 156 */ 157 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 158 159 /** 160 * List of running activities, sorted by recent usage. 161 * The first entry in the list is the least recently used. 162 * It contains HistoryRecord objects. 163 */ 164 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 165 166 /** 167 * Animations that for the current transition have requested not to 168 * be considered for the transition animation. 169 */ 170 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 171 172 /** 173 * When we are in the process of pausing an activity, before starting the 174 * next one, this variable holds the activity that is currently being paused. 175 */ 176 ActivityRecord mPausingActivity = null; 177 178 /** 179 * This is the last activity that we put into the paused state. This is 180 * used to determine if we need to do an activity transition while sleeping, 181 * when we normally hold the top activity paused. 182 */ 183 ActivityRecord mLastPausedActivity = null; 184 185 /** 186 * Activities that specify No History must be removed once the user navigates away from them. 187 * If the device goes to sleep with such an activity in the paused state then we save it here 188 * and finish it later if another activity replaces it on wakeup. 189 */ 190 ActivityRecord mLastNoHistoryActivity = null; 191 192 /** 193 * Current activity that is resumed, or null if there is none. 194 */ 195 ActivityRecord mResumedActivity = null; 196 197 /** 198 * This is the last activity that has been started. It is only used to 199 * identify when multiple activities are started at once so that the user 200 * can be warned they may not be in the activity they think they are. 201 */ 202 ActivityRecord mLastStartedActivity = null; 203 204 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 205 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 206 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 207 // Activity in mTranslucentActivityWaiting is notified via 208 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 209 // background activity being drawn then the same call will be made with a true value. 210 ActivityRecord mTranslucentActivityWaiting = null; 211 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 212 new ArrayList<ActivityRecord>(); 213 // Options passed from the caller of the convertToTranslucent to the activity that will 214 // appear below it. 215 ActivityOptions mReturningActivityOptions = null; 216 217 /** 218 * Set when we know we are going to be calling updateConfiguration() 219 * soon, so want to skip intermediate config checks. 220 */ 221 boolean mConfigWillChange; 222 223 long mLaunchStartTime = 0; 224 long mFullyDrawnStartTime = 0; 225 226 /** 227 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 228 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 229 */ 230 private ActivityRecord mLastScreenshotActivity = null; 231 private Bitmap mLastScreenshotBitmap = null; 232 233 int mThumbnailWidth = -1; 234 int mThumbnailHeight = -1; 235 236 int mCurrentUser; 237 238 final int mStackId; 239 final ActivityContainer mActivityContainer; 240 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 241 ArrayList<ActivityStack> mStacks; 242 /** The attached Display's unique identifier, or -1 if detached */ 243 int mDisplayId; 244 245 /** Run all ActivityStacks through this */ 246 final ActivityStackSupervisor mStackSupervisor; 247 248 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 249 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 250 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 251 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 252 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 253 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 254 255 static class ScheduleDestroyArgs { 256 final ProcessRecord mOwner; 257 final boolean mOomAdj; 258 final String mReason; 259 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 260 mOwner = owner; 261 mOomAdj = oomAdj; 262 mReason = reason; 263 } 264 } 265 266 final Handler mHandler; 267 268 final class ActivityStackHandler extends Handler { 269 //public Handler() { 270 // if (localLOGV) Slog.v(TAG, "Handler started!"); 271 //} 272 ActivityStackHandler(Looper looper) { 273 super(looper); 274 } 275 276 @Override 277 public void handleMessage(Message msg) { 278 switch (msg.what) { 279 case PAUSE_TIMEOUT_MSG: { 280 ActivityRecord r = (ActivityRecord)msg.obj; 281 // We don't at this point know if the activity is fullscreen, 282 // so we need to be conservative and assume it isn't. 283 Slog.w(TAG, "Activity pause timeout for " + r); 284 synchronized (mService) { 285 if (r.app != null) { 286 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 287 } 288 activityPausedLocked(r.appToken, true, r.persistentState); 289 } 290 } break; 291 case LAUNCH_TICK_MSG: { 292 ActivityRecord r = (ActivityRecord)msg.obj; 293 synchronized (mService) { 294 if (r.continueLaunchTickingLocked()) { 295 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 296 } 297 } 298 } break; 299 case DESTROY_TIMEOUT_MSG: { 300 ActivityRecord r = (ActivityRecord)msg.obj; 301 // We don't at this point know if the activity is fullscreen, 302 // so we need to be conservative and assume it isn't. 303 Slog.w(TAG, "Activity destroy timeout for " + r); 304 synchronized (mService) { 305 activityDestroyedLocked(r != null ? r.appToken : null); 306 } 307 } break; 308 case STOP_TIMEOUT_MSG: { 309 ActivityRecord r = (ActivityRecord)msg.obj; 310 // We don't at this point know if the activity is fullscreen, 311 // so we need to be conservative and assume it isn't. 312 Slog.w(TAG, "Activity stop timeout for " + r); 313 synchronized (mService) { 314 if (r.isInHistory()) { 315 activityStoppedLocked(r, null, null, null); 316 } 317 } 318 } break; 319 case DESTROY_ACTIVITIES_MSG: { 320 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 321 synchronized (mService) { 322 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 323 } 324 } break; 325 case TRANSLUCENT_TIMEOUT_MSG: { 326 synchronized (mService) { 327 notifyActivityDrawnLocked(null); 328 } 329 } break; 330 } 331 } 332 } 333 334 int numActivities() { 335 int count = 0; 336 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 337 count += mTaskHistory.get(taskNdx).mActivities.size(); 338 } 339 return count; 340 } 341 342 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 343 mActivityContainer = activityContainer; 344 mStackSupervisor = activityContainer.getOuter(); 345 mService = mStackSupervisor.mService; 346 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 347 mWindowManager = mService.mWindowManager; 348 mStackId = activityContainer.mStackId; 349 mCurrentUser = mService.mCurrentUserId; 350 // Get the activity screenshot thumbnail dimensions 351 Resources res = mService.mContext.getResources(); 352 mThumbnailWidth = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 353 mThumbnailHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 354 } 355 356 /** 357 * Checks whether the userid is a profile of the current user. 358 */ 359 private boolean isCurrentProfileLocked(int userId) { 360 if (userId == mCurrentUser) return true; 361 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 362 if (mService.mCurrentProfileIds[i] == userId) return true; 363 } 364 return false; 365 } 366 367 boolean okToShowLocked(ActivityRecord r) { 368 return isCurrentProfileLocked(r.userId) 369 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 370 } 371 372 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 373 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 374 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 375 if (r != null) { 376 return r; 377 } 378 } 379 return null; 380 } 381 382 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 383 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 384 final TaskRecord task = mTaskHistory.get(taskNdx); 385 final ArrayList<ActivityRecord> activities = task.mActivities; 386 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 387 ActivityRecord r = activities.get(activityNdx); 388 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 389 return r; 390 } 391 } 392 } 393 return null; 394 } 395 396 /** 397 * This is a simplified version of topRunningActivityLocked that provides a number of 398 * optional skip-over modes. It is intended for use with the ActivityController hook only. 399 * 400 * @param token If non-null, any history records matching this token will be skipped. 401 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 402 * 403 * @return Returns the HistoryRecord of the next activity on the stack. 404 */ 405 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 406 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 407 TaskRecord task = mTaskHistory.get(taskNdx); 408 if (task.taskId == taskId) { 409 continue; 410 } 411 ArrayList<ActivityRecord> activities = task.mActivities; 412 for (int i = activities.size() - 1; i >= 0; --i) { 413 final ActivityRecord r = activities.get(i); 414 // Note: the taskId check depends on real taskId fields being non-zero 415 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 416 return r; 417 } 418 } 419 } 420 return null; 421 } 422 423 final ActivityRecord topActivity() { 424 // Iterate to find the first non-empty task stack. Note that this code can 425 // be simplified once we stop storing tasks with empty mActivities lists. 426 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 427 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 428 final int topActivityNdx = activities.size() - 1; 429 if (topActivityNdx >= 0) { 430 return activities.get(topActivityNdx); 431 } 432 } 433 return null; 434 } 435 436 final TaskRecord topTask() { 437 final int size = mTaskHistory.size(); 438 if (size > 0) { 439 return mTaskHistory.get(size - 1); 440 } 441 return null; 442 } 443 444 TaskRecord taskForIdLocked(int id) { 445 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 446 final TaskRecord task = mTaskHistory.get(taskNdx); 447 if (task.taskId == id) { 448 return task; 449 } 450 } 451 return null; 452 } 453 454 ActivityRecord isInStackLocked(IBinder token) { 455 final ActivityRecord r = ActivityRecord.forToken(token); 456 if (r != null) { 457 final TaskRecord task = r.task; 458 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 459 if (task.stack != this) Slog.w(TAG, 460 "Illegal state! task does not point to stack it is in."); 461 return r; 462 } 463 } 464 return null; 465 } 466 467 final boolean updateLRUListLocked(ActivityRecord r) { 468 final boolean hadit = mLRUActivities.remove(r); 469 mLRUActivities.add(r); 470 return hadit; 471 } 472 473 final boolean isHomeStack() { 474 return mStackId == HOME_STACK_ID; 475 } 476 477 final boolean isOnHomeDisplay() { 478 return isAttached() && 479 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 480 } 481 482 final void moveToFront() { 483 if (isAttached()) { 484 if (isOnHomeDisplay()) { 485 mStackSupervisor.moveHomeStack(isHomeStack()); 486 } 487 mStacks.remove(this); 488 mStacks.add(this); 489 } 490 } 491 492 final boolean isAttached() { 493 return mStacks != null; 494 } 495 496 /** 497 * Returns the top activity in any existing task matching the given 498 * Intent. Returns null if no such task is found. 499 */ 500 ActivityRecord findTaskLocked(ActivityRecord target) { 501 Intent intent = target.intent; 502 ActivityInfo info = target.info; 503 ComponentName cls = intent.getComponent(); 504 if (info.targetActivity != null) { 505 cls = new ComponentName(info.packageName, info.targetActivity); 506 } 507 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 508 boolean isDocument = intent != null & intent.isDocument(); 509 // If documentData is non-null then it must match the existing task data. 510 Uri documentData = isDocument ? intent.getData() : null; 511 512 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 513 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 514 final TaskRecord task = mTaskHistory.get(taskNdx); 515 if (task.voiceSession != null) { 516 // We never match voice sessions; those always run independently. 517 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 518 continue; 519 } 520 if (task.userId != userId) { 521 // Looking for a different task. 522 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 523 continue; 524 } 525 final ActivityRecord r = task.getTopActivity(); 526 if (r == null || r.finishing || r.userId != userId || 527 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 528 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 529 continue; 530 } 531 532 final Intent taskIntent = task.intent; 533 final Intent affinityIntent = task.affinityIntent; 534 final boolean taskIsDocument; 535 final Uri taskDocumentData; 536 if (taskIntent != null && taskIntent.isDocument()) { 537 taskIsDocument = true; 538 taskDocumentData = taskIntent.getData(); 539 } else if (affinityIntent != null && affinityIntent.isDocument()) { 540 taskIsDocument = true; 541 taskDocumentData = affinityIntent.getData(); 542 } else { 543 taskIsDocument = false; 544 taskDocumentData = null; 545 } 546 547 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 548 + taskIntent.getComponent().flattenToShortString() 549 + "/aff=" + r.task.affinity + " to new cls=" 550 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 551 if (!isDocument && !taskIsDocument && task.affinity != null) { 552 if (task.affinity.equals(target.taskAffinity)) { 553 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 554 return r; 555 } 556 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 557 Objects.equals(documentData, taskDocumentData)) { 558 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 559 //dump(); 560 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 561 + r.intent); 562 return r; 563 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 564 Objects.equals(documentData, taskDocumentData)) { 565 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 566 //dump(); 567 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 568 + r.intent); 569 return r; 570 } else if (DEBUG_TASKS) { 571 Slog.d(TAG, "Not a match: " + task); 572 } 573 } 574 575 return null; 576 } 577 578 /** 579 * Returns the first activity (starting from the top of the stack) that 580 * is the same as the given activity. Returns null if no such activity 581 * is found. 582 */ 583 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 584 ComponentName cls = intent.getComponent(); 585 if (info.targetActivity != null) { 586 cls = new ComponentName(info.packageName, info.targetActivity); 587 } 588 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 589 590 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 591 TaskRecord task = mTaskHistory.get(taskNdx); 592 if (!isCurrentProfileLocked(task.userId)) { 593 return null; 594 } 595 final ArrayList<ActivityRecord> activities = task.mActivities; 596 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 597 ActivityRecord r = activities.get(activityNdx); 598 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 599 //Slog.i(TAG, "Found matching class!"); 600 //dump(); 601 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 602 return r; 603 } 604 } 605 } 606 607 return null; 608 } 609 610 /* 611 * Move the activities around in the stack to bring a user to the foreground. 612 */ 613 final void switchUserLocked(int userId) { 614 if (mCurrentUser == userId) { 615 return; 616 } 617 mCurrentUser = userId; 618 619 // Move userId's tasks to the top. 620 int index = mTaskHistory.size(); 621 for (int i = 0; i < index; ) { 622 TaskRecord task = mTaskHistory.get(i); 623 if (isCurrentProfileLocked(task.userId)) { 624 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 625 " moving " + task + " to top"); 626 mTaskHistory.remove(i); 627 mTaskHistory.add(task); 628 --index; 629 // Use same value for i. 630 } else { 631 ++i; 632 } 633 } 634 if (VALIDATE_TOKENS) { 635 validateAppTokensLocked(); 636 } 637 } 638 639 void minimalResumeActivityLocked(ActivityRecord r) { 640 r.state = ActivityState.RESUMED; 641 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 642 + " (starting new instance)"); 643 r.stopped = false; 644 mResumedActivity = r; 645 r.task.touchActiveTime(); 646 mService.addRecentTaskLocked(r.task); 647 completeResumeLocked(r); 648 mStackSupervisor.checkReadyForSleepLocked(); 649 setLaunchTime(r); 650 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 651 } 652 653 private void startLaunchTraces() { 654 if (mFullyDrawnStartTime != 0) { 655 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 656 } 657 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 658 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 659 } 660 661 private void stopFullyDrawnTraceIfNeeded() { 662 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 663 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 664 mFullyDrawnStartTime = 0; 665 } 666 } 667 668 void setLaunchTime(ActivityRecord r) { 669 if (r.displayStartTime == 0) { 670 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 671 if (mLaunchStartTime == 0) { 672 startLaunchTraces(); 673 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 674 } 675 } else if (mLaunchStartTime == 0) { 676 startLaunchTraces(); 677 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 678 } 679 } 680 681 void clearLaunchTime(ActivityRecord r) { 682 // Make sure that there is no activity waiting for this to launch. 683 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 684 r.displayStartTime = r.fullyDrawnStartTime = 0; 685 } else { 686 mStackSupervisor.removeTimeoutsForActivityLocked(r); 687 mStackSupervisor.scheduleIdleTimeoutLocked(r); 688 } 689 } 690 691 void awakeFromSleepingLocked() { 692 // Ensure activities are no longer sleeping. 693 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 694 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 695 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 696 activities.get(activityNdx).setSleeping(false); 697 } 698 } 699 } 700 701 /** 702 * @return true if something must be done before going to sleep. 703 */ 704 boolean checkReadyForSleepLocked() { 705 if (mResumedActivity != null) { 706 // Still have something resumed; can't sleep until it is paused. 707 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 708 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 709 startPausingLocked(false, true); 710 return true; 711 } 712 if (mPausingActivity != null) { 713 // Still waiting for something to pause; can't sleep yet. 714 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 715 return true; 716 } 717 718 return false; 719 } 720 721 void goToSleep() { 722 ensureActivitiesVisibleLocked(null, 0); 723 724 // Make sure any stopped but visible activities are now sleeping. 725 // This ensures that the activity's onStop() is called. 726 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 727 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 728 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 729 final ActivityRecord r = activities.get(activityNdx); 730 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 731 r.setSleeping(true); 732 } 733 } 734 } 735 } 736 737 /** 738 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 739 * again when requested. 740 */ 741 private void invalidateLastScreenshot() { 742 mLastScreenshotActivity = null; 743 if (mLastScreenshotBitmap != null) { 744 mLastScreenshotBitmap.recycle(); 745 } 746 mLastScreenshotBitmap = null; 747 } 748 749 public final Bitmap screenshotActivities(ActivityRecord who) { 750 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 751 if (who.noDisplay) { 752 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 753 return null; 754 } 755 756 TaskRecord tr = who.task; 757 if (mService.getMostRecentTask() != tr || isHomeStack()) { 758 // This is an optimization -- since we never show Home or Recents within Recents itself, 759 // we can just go ahead and skip taking the screenshot if this is the home stack. In 760 // the case where the most recent task is not the task that was supplied, then the stack 761 // has changed, so invalidate the last screenshot(). 762 invalidateLastScreenshot(); 763 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 764 return null; 765 } 766 767 int w = mThumbnailWidth; 768 int h = mThumbnailHeight; 769 if (w > 0) { 770 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 771 || mLastScreenshotActivity.state == ActivityState.RESUMED 772 || mLastScreenshotBitmap.getWidth() != w 773 || mLastScreenshotBitmap.getHeight() != h) { 774 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 775 mLastScreenshotActivity = who; 776 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 777 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 778 } 779 if (mLastScreenshotBitmap != null) { 780 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 781 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 782 } 783 } 784 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 785 return null; 786 } 787 788 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 789 if (mPausingActivity != null) { 790 Slog.e(TAG, "Trying to pause when pause is already pending for " 791 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 792 } 793 ActivityRecord prev = mResumedActivity; 794 if (prev == null) { 795 Slog.e(TAG, "Trying to pause when nothing is resumed", 796 new RuntimeException("here").fillInStackTrace()); 797 mStackSupervisor.resumeTopActivitiesLocked(); 798 return; 799 } 800 801 if (mActivityContainer.mParentActivity == null) { 802 // Top level stack, not a child. Look for child stacks. 803 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 804 } 805 806 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 807 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 808 mResumedActivity = null; 809 mPausingActivity = prev; 810 mLastPausedActivity = prev; 811 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 812 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 813 prev.state = ActivityState.PAUSING; 814 prev.task.touchActiveTime(); 815 clearLaunchTime(prev); 816 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 817 if (next == null || next.noDisplay || next.task != prev.task) { 818 prev.updateThumbnail(screenshotActivities(prev), null); 819 } 820 stopFullyDrawnTraceIfNeeded(); 821 822 mService.updateCpuStats(); 823 824 if (prev.app != null && prev.app.thread != null) { 825 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 826 try { 827 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 828 prev.userId, System.identityHashCode(prev), 829 prev.shortComponentName); 830 mService.updateUsageStats(prev, false); 831 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 832 userLeaving, prev.configChangeFlags); 833 } catch (Exception e) { 834 // Ignore exception, if process died other code will cleanup. 835 Slog.w(TAG, "Exception thrown during pause", e); 836 mPausingActivity = null; 837 mLastPausedActivity = null; 838 mLastNoHistoryActivity = null; 839 } 840 } else { 841 mPausingActivity = null; 842 mLastPausedActivity = null; 843 mLastNoHistoryActivity = null; 844 } 845 846 // If we are not going to sleep, we want to ensure the device is 847 // awake until the next activity is started. 848 if (!mService.isSleepingOrShuttingDown()) { 849 mStackSupervisor.acquireLaunchWakelock(); 850 } 851 852 if (mPausingActivity != null) { 853 // Have the window manager pause its key dispatching until the new 854 // activity has started. If we're pausing the activity just because 855 // the screen is being turned off and the UI is sleeping, don't interrupt 856 // key dispatch; the same activity will pick it up again on wakeup. 857 if (!uiSleeping) { 858 prev.pauseKeyDispatchingLocked(); 859 } else { 860 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 861 } 862 863 // Schedule a pause timeout in case the app doesn't respond. 864 // We don't give it much time because this directly impacts the 865 // responsiveness seen by the user. 866 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 867 msg.obj = prev; 868 prev.pauseTime = SystemClock.uptimeMillis(); 869 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 870 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 871 } else { 872 // This activity failed to schedule the 873 // pause, so just treat it as being paused now. 874 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 875 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 876 } 877 } 878 879 final void activityPausedLocked(IBinder token, boolean timeout, 880 PersistableBundle persistentState) { 881 if (DEBUG_PAUSE) Slog.v( 882 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 883 884 final ActivityRecord r = isInStackLocked(token); 885 if (r != null) { 886 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 887 if (persistentState != null) { 888 r.persistentState = persistentState; 889 mService.notifyTaskPersisterLocked(r.task, false); 890 } 891 if (mPausingActivity == r) { 892 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 893 + (timeout ? " (due to timeout)" : " (pause complete)")); 894 r.state = ActivityState.PAUSED; 895 completePauseLocked(); 896 } else { 897 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 898 r.userId, System.identityHashCode(r), r.shortComponentName, 899 mPausingActivity != null 900 ? mPausingActivity.shortComponentName : "(none)"); 901 } 902 } 903 } 904 905 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 906 PersistableBundle persistentState, CharSequence description) { 907 if (r.state != ActivityState.STOPPING) { 908 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 909 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 910 return; 911 } 912 if (persistentState != null) { 913 r.persistentState = persistentState; 914 mService.notifyTaskPersisterLocked(r.task, false); 915 } 916 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 917 if (icicle != null) { 918 // If icicle is null, this is happening due to a timeout, so we 919 // haven't really saved the state. 920 r.icicle = icicle; 921 r.haveState = true; 922 r.launchCount = 0; 923 r.updateThumbnail(null, description); 924 } 925 if (!r.stopped) { 926 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 927 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 928 r.stopped = true; 929 r.state = ActivityState.STOPPED; 930 if (r.finishing) { 931 r.clearOptionsLocked(); 932 } else { 933 if (r.configDestroy) { 934 destroyActivityLocked(r, true, false, "stop-config"); 935 mStackSupervisor.resumeTopActivitiesLocked(); 936 } else { 937 mStackSupervisor.updatePreviousProcessLocked(r); 938 } 939 } 940 } 941 } 942 943 private void completePauseLocked() { 944 ActivityRecord prev = mPausingActivity; 945 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 946 947 if (prev != null) { 948 if (prev.finishing) { 949 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 950 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 951 } else if (prev.app != null) { 952 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 953 if (prev.waitingVisible) { 954 prev.waitingVisible = false; 955 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 956 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 957 TAG, "Complete pause, no longer waiting: " + prev); 958 } 959 if (prev.configDestroy) { 960 // The previous is being paused because the configuration 961 // is changing, which means it is actually stopping... 962 // To juggle the fact that we are also starting a new 963 // instance right now, we need to first completely stop 964 // the current instance before starting the new one. 965 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 966 destroyActivityLocked(prev, true, false, "pause-config"); 967 } else { 968 mStackSupervisor.mStoppingActivities.add(prev); 969 if (mStackSupervisor.mStoppingActivities.size() > 3 || 970 prev.frontOfTask && mTaskHistory.size() <= 1) { 971 // If we already have a few activities waiting to stop, 972 // then give up on things going idle and start clearing 973 // them out. Or if r is the last of activity of the last task the stack 974 // will be empty and must be cleared immediately. 975 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 976 mStackSupervisor.scheduleIdleLocked(); 977 } else { 978 mStackSupervisor.checkReadyForSleepLocked(); 979 } 980 } 981 } else { 982 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 983 prev = null; 984 } 985 mPausingActivity = null; 986 } 987 988 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 989 if (!mService.isSleepingOrShuttingDown()) { 990 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 991 } else { 992 mStackSupervisor.checkReadyForSleepLocked(); 993 ActivityRecord top = topStack.topRunningActivityLocked(null); 994 if (top == null || (prev != null && top != prev)) { 995 // If there are no more activities available to run, 996 // do resume anyway to start something. Also if the top 997 // activity on the stack is not the just paused activity, 998 // we need to go ahead and resume it to ensure we complete 999 // an in-flight app switch. 1000 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 1001 } 1002 } 1003 1004 if (prev != null) { 1005 prev.resumeKeyDispatchingLocked(); 1006 1007 if (prev.app != null && prev.cpuTimeAtResume > 0 1008 && mService.mBatteryStatsService.isOnBattery()) { 1009 long diff; 1010 synchronized (mService.mProcessCpuThread) { 1011 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1012 - prev.cpuTimeAtResume; 1013 } 1014 if (diff > 0) { 1015 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1016 synchronized (bsi) { 1017 BatteryStatsImpl.Uid.Proc ps = 1018 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1019 prev.info.packageName); 1020 if (ps != null) { 1021 ps.addForegroundTimeLocked(diff); 1022 } 1023 } 1024 } 1025 } 1026 prev.cpuTimeAtResume = 0; // reset it 1027 } 1028 } 1029 1030 /** 1031 * Once we know that we have asked an application to put an activity in 1032 * the resumed state (either by launching it or explicitly telling it), 1033 * this function updates the rest of our state to match that fact. 1034 */ 1035 private void completeResumeLocked(ActivityRecord next) { 1036 next.idle = false; 1037 next.results = null; 1038 next.newIntents = null; 1039 if (next.nowVisible) { 1040 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1041 mStackSupervisor.dismissKeyguard(); 1042 } 1043 1044 // schedule an idle timeout in case the app doesn't do it for us. 1045 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1046 1047 mStackSupervisor.reportResumedActivityLocked(next); 1048 1049 next.resumeKeyDispatchingLocked(); 1050 mNoAnimActivities.clear(); 1051 1052 // Mark the point when the activity is resuming 1053 // TODO: To be more accurate, the mark should be before the onCreate, 1054 // not after the onResume. But for subsequent starts, onResume is fine. 1055 if (next.app != null) { 1056 synchronized (mService.mProcessCpuThread) { 1057 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1058 } 1059 } else { 1060 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1061 } 1062 1063 // If we are resuming the activity that we had last screenshotted, then we know it will be 1064 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1065 if (next == mLastScreenshotActivity) { 1066 invalidateLastScreenshot(); 1067 } 1068 } 1069 1070 private void setVisibile(ActivityRecord r, boolean visible) { 1071 r.visible = visible; 1072 mWindowManager.setAppVisibility(r.appToken, visible); 1073 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1074 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1075 ActivityContainer container = containers.get(containerNdx); 1076 container.setVisible(visible); 1077 } 1078 } 1079 1080 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1081 // If so, this stack is hidden, otherwise it is visible. 1082 private boolean isStackVisible() { 1083 if (!isAttached()) { 1084 return false; 1085 } 1086 1087 if (mStackSupervisor.isFrontStack(this)) { 1088 return true; 1089 } 1090 1091 /** 1092 * Start at the task above this one and go up, looking for a visible 1093 * fullscreen activity, or a translucent activity that requested the 1094 * wallpaper to be shown behind it. 1095 */ 1096 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1097 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1098 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1099 final TaskRecord task = tasks.get(taskNdx); 1100 final ArrayList<ActivityRecord> activities = task.mActivities; 1101 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1102 final ActivityRecord r = activities.get(activityNdx); 1103 1104 // Conditions for an activity to obscure the stack we're 1105 // examining: 1106 // 1. Not Finishing AND Visible AND: 1107 // 2. Either: 1108 // - Full Screen Activity OR 1109 // - On top of Home and our stack is NOT home 1110 if (!r.finishing && r.visible && (r.fullscreen || 1111 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1112 return false; 1113 } 1114 } 1115 } 1116 } 1117 1118 return true; 1119 } 1120 1121 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1122 ActivityRecord r = topRunningActivityLocked(null); 1123 if (r != null) { 1124 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1125 } 1126 } 1127 1128 /** 1129 * Make sure that all activities that need to be visible (that is, they 1130 * currently can be seen by the user) actually are. 1131 */ 1132 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1133 String onlyThisProcess, int configChanges) { 1134 if (DEBUG_VISBILITY) Slog.v( 1135 TAG, "ensureActivitiesVisible behind " + top 1136 + " configChanges=0x" + Integer.toHexString(configChanges)); 1137 1138 if (mTranslucentActivityWaiting != top) { 1139 mUndrawnActivitiesBelowTopTranslucent.clear(); 1140 if (mTranslucentActivityWaiting != null) { 1141 // Call the callback with a timeout indication. 1142 notifyActivityDrawnLocked(null); 1143 mTranslucentActivityWaiting = null; 1144 } 1145 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1146 } 1147 1148 // If the top activity is not fullscreen, then we need to 1149 // make sure any activities under it are now visible. 1150 boolean aboveTop = true; 1151 boolean behindFullscreen = !isStackVisible(); 1152 1153 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1154 final TaskRecord task = mTaskHistory.get(taskNdx); 1155 final ArrayList<ActivityRecord> activities = task.mActivities; 1156 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1157 final ActivityRecord r = activities.get(activityNdx); 1158 if (r.finishing) { 1159 continue; 1160 } 1161 if (aboveTop && r != top) { 1162 continue; 1163 } 1164 aboveTop = false; 1165 if (!behindFullscreen) { 1166 if (DEBUG_VISBILITY) Slog.v( 1167 TAG, "Make visible? " + r + " finishing=" + r.finishing 1168 + " state=" + r.state); 1169 1170 final boolean doThisProcess = onlyThisProcess == null 1171 || onlyThisProcess.equals(r.processName); 1172 1173 // First: if this is not the current activity being started, make 1174 // sure it matches the current configuration. 1175 if (r != starting && doThisProcess) { 1176 ensureActivityConfigurationLocked(r, 0); 1177 } 1178 1179 if (r.app == null || r.app.thread == null) { 1180 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1181 // This activity needs to be visible, but isn't even 1182 // running... get it started, but don't resume it 1183 // at this point. 1184 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1185 if (r != starting) { 1186 r.startFreezingScreenLocked(r.app, configChanges); 1187 } 1188 if (!r.visible) { 1189 if (DEBUG_VISBILITY) Slog.v( 1190 TAG, "Starting and making visible: " + r); 1191 setVisibile(r, true); 1192 } 1193 if (r != starting) { 1194 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1195 } 1196 } 1197 1198 } else if (r.visible) { 1199 // If this activity is already visible, then there is nothing 1200 // else to do here. 1201 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1202 r.stopFreezingScreenLocked(false); 1203 1204 } else if (onlyThisProcess == null) { 1205 // This activity is not currently visible, but is running. 1206 // Tell it to become visible. 1207 r.visible = true; 1208 if (r.state != ActivityState.RESUMED && r != starting) { 1209 // If this activity is paused, tell it 1210 // to now show its window. 1211 if (DEBUG_VISBILITY) Slog.v( 1212 TAG, "Making visible and scheduling visibility: " + r); 1213 try { 1214 if (mTranslucentActivityWaiting != null) { 1215 r.updateOptionsLocked(mReturningActivityOptions); 1216 mUndrawnActivitiesBelowTopTranslucent.add(r); 1217 } 1218 setVisibile(r, true); 1219 r.sleeping = false; 1220 r.app.pendingUiClean = true; 1221 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1222 r.stopFreezingScreenLocked(false); 1223 } catch (Exception e) { 1224 // Just skip on any failure; we'll make it 1225 // visible when it next restarts. 1226 Slog.w(TAG, "Exception thrown making visibile: " 1227 + r.intent.getComponent(), e); 1228 } 1229 } 1230 } 1231 1232 // Aggregate current change flags. 1233 configChanges |= r.configChangeFlags; 1234 1235 if (r.fullscreen) { 1236 // At this point, nothing else needs to be shown 1237 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1238 behindFullscreen = true; 1239 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1240 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1241 behindFullscreen = true; 1242 } 1243 } else { 1244 if (DEBUG_VISBILITY) Slog.v( 1245 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1246 + " state=" + r.state 1247 + " behindFullscreen=" + behindFullscreen); 1248 // Now for any activities that aren't visible to the user, make 1249 // sure they no longer are keeping the screen frozen. 1250 if (r.visible) { 1251 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1252 try { 1253 setVisibile(r, false); 1254 switch (r.state) { 1255 case STOPPING: 1256 case STOPPED: 1257 if (r.app != null && r.app.thread != null) { 1258 if (DEBUG_VISBILITY) Slog.v( 1259 TAG, "Scheduling invisibility: " + r); 1260 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1261 } 1262 break; 1263 1264 case INITIALIZING: 1265 case RESUMED: 1266 case PAUSING: 1267 case PAUSED: 1268 // This case created for transitioning activities from 1269 // translucent to opaque {@link Activity#convertToOpaque}. 1270 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1271 mStackSupervisor.mStoppingActivities.add(r); 1272 } 1273 mStackSupervisor.scheduleIdleLocked(); 1274 break; 1275 1276 default: 1277 break; 1278 } 1279 } catch (Exception e) { 1280 // Just skip on any failure; we'll make it 1281 // visible when it next restarts. 1282 Slog.w(TAG, "Exception thrown making hidden: " 1283 + r.intent.getComponent(), e); 1284 } 1285 } else { 1286 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1287 } 1288 } 1289 } 1290 } 1291 } 1292 1293 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1294 mTranslucentActivityWaiting = r; 1295 mUndrawnActivitiesBelowTopTranslucent.clear(); 1296 mReturningActivityOptions = options; 1297 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1298 } 1299 1300 /** 1301 * Called as activities below the top translucent activity are redrawn. When the last one is 1302 * redrawn notify the top activity by calling 1303 * {@link Activity#onTranslucentConversionComplete}. 1304 * 1305 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1306 * occurred and the activity will be notified immediately. 1307 */ 1308 void notifyActivityDrawnLocked(ActivityRecord r) { 1309 mActivityContainer.setDrawn(); 1310 if ((r == null) 1311 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1312 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1313 // The last undrawn activity below the top has just been drawn. If there is an 1314 // opaque activity at the top, notify it that it can become translucent safely now. 1315 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1316 mTranslucentActivityWaiting = null; 1317 mUndrawnActivitiesBelowTopTranslucent.clear(); 1318 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1319 1320 if (waitingActivity != null) { 1321 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1322 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1323 try { 1324 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1325 waitingActivity.appToken, r != null); 1326 } catch (RemoteException e) { 1327 } 1328 } 1329 } 1330 } 1331 } 1332 1333 /** If any activities below the top running one are in the INITIALIZING state and they have a 1334 * starting window displayed then remove that starting window. It is possible that the activity 1335 * in this state will never resumed in which case that starting window will be orphaned. */ 1336 void cancelInitializingActivities() { 1337 final ActivityRecord topActivity = topRunningActivityLocked(null); 1338 boolean aboveTop = true; 1339 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1340 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1341 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1342 final ActivityRecord r = activities.get(activityNdx); 1343 if (aboveTop) { 1344 if (r == topActivity) { 1345 aboveTop = false; 1346 } 1347 continue; 1348 } 1349 1350 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1351 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1352 r.mStartingWindowShown = false; 1353 mWindowManager.removeAppStartingWindow(r.appToken); 1354 } 1355 } 1356 } 1357 } 1358 1359 /** 1360 * Ensure that the top activity in the stack is resumed. 1361 * 1362 * @param prev The previously resumed activity, for when in the process 1363 * of pausing; can be null to call from elsewhere. 1364 * 1365 * @return Returns true if something is being resumed, or false if 1366 * nothing happened. 1367 */ 1368 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1369 return resumeTopActivityLocked(prev, null); 1370 } 1371 1372 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1373 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1374 1375 ActivityRecord parent = mActivityContainer.mParentActivity; 1376 if ((parent != null && parent.state != ActivityState.RESUMED) || 1377 !mActivityContainer.isAttached()) { 1378 // Do not resume this stack if its parent is not resumed. 1379 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1380 return false; 1381 } 1382 1383 cancelInitializingActivities(); 1384 1385 // Find the first activity that is not finishing. 1386 ActivityRecord next = topRunningActivityLocked(null); 1387 1388 // Remember how we'll process this pause/resume situation, and ensure 1389 // that the state is reset however we wind up proceeding. 1390 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1391 mStackSupervisor.mUserLeaving = false; 1392 1393 final TaskRecord prevTask = prev != null ? prev.task : null; 1394 if (next == null) { 1395 // There are no more activities! Let's just start up the 1396 // Launcher... 1397 ActivityOptions.abort(options); 1398 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1399 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1400 // Only resume home if on home display 1401 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1402 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1403 return isOnHomeDisplay() && 1404 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1405 } 1406 1407 next.delayedResume = false; 1408 1409 // If the top activity is the resumed one, nothing to do. 1410 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1411 mStackSupervisor.allResumedActivitiesComplete()) { 1412 // Make sure we have executed any pending transitions, since there 1413 // should be nothing left to do at this point. 1414 mWindowManager.executeAppTransition(); 1415 mNoAnimActivities.clear(); 1416 ActivityOptions.abort(options); 1417 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1418 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1419 return false; 1420 } 1421 1422 final TaskRecord nextTask = next.task; 1423 if (prevTask != null && prevTask.stack == this && 1424 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1425 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1426 if (prevTask == nextTask) { 1427 prevTask.setFrontOfTask(); 1428 } else if (prevTask != topTask()) { 1429 // This task is going away but it was supposed to return to the home stack. 1430 // Now the task above it has to return to the home task instead. 1431 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1432 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1433 } else { 1434 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1435 "resumeTopActivityLocked: Launching home next"); 1436 // Only resume home if on home display 1437 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1438 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1439 return isOnHomeDisplay() && 1440 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1441 } 1442 } 1443 1444 // If we are sleeping, and there is no resumed activity, and the top 1445 // activity is paused, well that is the state we want. 1446 if (mService.isSleepingOrShuttingDown() 1447 && mLastPausedActivity == next 1448 && mStackSupervisor.allPausedActivitiesComplete()) { 1449 // Make sure we have executed any pending transitions, since there 1450 // should be nothing left to do at this point. 1451 mWindowManager.executeAppTransition(); 1452 mNoAnimActivities.clear(); 1453 ActivityOptions.abort(options); 1454 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1455 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1456 return false; 1457 } 1458 1459 // Make sure that the user who owns this activity is started. If not, 1460 // we will just leave it as is because someone should be bringing 1461 // another user's activities to the top of the stack. 1462 if (mService.mStartedUsers.get(next.userId) == null) { 1463 Slog.w(TAG, "Skipping resume of top activity " + next 1464 + ": user " + next.userId + " is stopped"); 1465 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1466 return false; 1467 } 1468 1469 // The activity may be waiting for stop, but that is no longer 1470 // appropriate for it. 1471 mStackSupervisor.mStoppingActivities.remove(next); 1472 mStackSupervisor.mGoingToSleepActivities.remove(next); 1473 next.sleeping = false; 1474 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1475 1476 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1477 1478 // If we are currently pausing an activity, then don't do anything 1479 // until that is done. 1480 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1481 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1482 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1483 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1484 return false; 1485 } 1486 1487 // Okay we are now going to start a switch, to 'next'. We may first 1488 // have to pause the current activity, but this is an important point 1489 // where we have decided to go to 'next' so keep track of that. 1490 // XXX "App Redirected" dialog is getting too many false positives 1491 // at this point, so turn off for now. 1492 if (false) { 1493 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1494 long now = SystemClock.uptimeMillis(); 1495 final boolean inTime = mLastStartedActivity.startTime != 0 1496 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1497 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1498 final int nextUid = next.info.applicationInfo.uid; 1499 if (inTime && lastUid != nextUid 1500 && lastUid != next.launchedFromUid 1501 && mService.checkPermission( 1502 android.Manifest.permission.STOP_APP_SWITCHES, 1503 -1, next.launchedFromUid) 1504 != PackageManager.PERMISSION_GRANTED) { 1505 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1506 } else { 1507 next.startTime = now; 1508 mLastStartedActivity = next; 1509 } 1510 } else { 1511 next.startTime = SystemClock.uptimeMillis(); 1512 mLastStartedActivity = next; 1513 } 1514 } 1515 1516 // We need to start pausing the current activity so the top one 1517 // can be resumed... 1518 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1519 if (mResumedActivity != null) { 1520 pausing = true; 1521 startPausingLocked(userLeaving, false); 1522 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1523 } 1524 if (pausing) { 1525 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1526 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1527 // At this point we want to put the upcoming activity's process 1528 // at the top of the LRU list, since we know we will be needing it 1529 // very soon and it would be a waste to let it get killed if it 1530 // happens to be sitting towards the end. 1531 if (next.app != null && next.app.thread != null) { 1532 // No reason to do full oom adj update here; we'll let that 1533 // happen whenever it needs to later. 1534 mService.updateLruProcessLocked(next.app, true, null); 1535 } 1536 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1537 return true; 1538 } 1539 1540 // If the most recent activity was noHistory but was only stopped rather 1541 // than stopped+finished because the device went to sleep, we need to make 1542 // sure to finish it as we're making a new activity topmost. 1543 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1544 !mLastNoHistoryActivity.finishing) { 1545 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1546 " on new resume"); 1547 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1548 null, "no-history", false); 1549 mLastNoHistoryActivity = null; 1550 } 1551 1552 if (prev != null && prev != next) { 1553 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1554 prev.waitingVisible = true; 1555 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1556 if (DEBUG_SWITCH) Slog.v( 1557 TAG, "Resuming top, waiting visible to hide: " + prev); 1558 } else { 1559 // The next activity is already visible, so hide the previous 1560 // activity's windows right now so we can show the new one ASAP. 1561 // We only do this if the previous is finishing, which should mean 1562 // it is on top of the one being resumed so hiding it quickly 1563 // is good. Otherwise, we want to do the normal route of allowing 1564 // the resumed activity to be shown so we can decide if the 1565 // previous should actually be hidden depending on whether the 1566 // new one is found to be full-screen or not. 1567 if (prev.finishing) { 1568 mWindowManager.setAppVisibility(prev.appToken, false); 1569 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1570 + prev + ", waitingVisible=" 1571 + (prev != null ? prev.waitingVisible : null) 1572 + ", nowVisible=" + next.nowVisible); 1573 } else { 1574 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1575 + prev + ", waitingVisible=" 1576 + (prev != null ? prev.waitingVisible : null) 1577 + ", nowVisible=" + next.nowVisible); 1578 } 1579 } 1580 } 1581 1582 // Launching this app's activity, make sure the app is no longer 1583 // considered stopped. 1584 try { 1585 AppGlobals.getPackageManager().setPackageStoppedState( 1586 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1587 } catch (RemoteException e1) { 1588 } catch (IllegalArgumentException e) { 1589 Slog.w(TAG, "Failed trying to unstop package " 1590 + next.packageName + ": " + e); 1591 } 1592 1593 // We are starting up the next activity, so tell the window manager 1594 // that the previous one will be hidden soon. This way it can know 1595 // to ignore it when computing the desired screen orientation. 1596 boolean anim = true; 1597 if (prev != null) { 1598 if (prev.finishing) { 1599 if (DEBUG_TRANSITION) Slog.v(TAG, 1600 "Prepare close transition: prev=" + prev); 1601 if (mNoAnimActivities.contains(prev)) { 1602 anim = false; 1603 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1604 } else { 1605 mWindowManager.prepareAppTransition(prev.task == next.task 1606 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1607 : AppTransition.TRANSIT_TASK_CLOSE, false); 1608 } 1609 mWindowManager.setAppWillBeHidden(prev.appToken); 1610 mWindowManager.setAppVisibility(prev.appToken, false); 1611 } else { 1612 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1613 if (mNoAnimActivities.contains(next)) { 1614 anim = false; 1615 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1616 } else { 1617 mWindowManager.prepareAppTransition(prev.task == next.task 1618 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1619 : AppTransition.TRANSIT_TASK_OPEN, false); 1620 } 1621 } 1622 if (false) { 1623 mWindowManager.setAppWillBeHidden(prev.appToken); 1624 mWindowManager.setAppVisibility(prev.appToken, false); 1625 } 1626 } else { 1627 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1628 if (mNoAnimActivities.contains(next)) { 1629 anim = false; 1630 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1631 } else { 1632 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1633 } 1634 } 1635 1636 Bundle resumeAnimOptions = null; 1637 if (anim) { 1638 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1639 if (opts != null) { 1640 resumeAnimOptions = opts.toBundle(); 1641 } 1642 next.applyOptionsLocked(); 1643 } else { 1644 next.clearOptionsLocked(); 1645 } 1646 1647 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1648 if (next.app != null && next.app.thread != null) { 1649 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1650 1651 // This activity is now becoming visible. 1652 mWindowManager.setAppVisibility(next.appToken, true); 1653 1654 // schedule launch ticks to collect information about slow apps. 1655 next.startLaunchTickingLocked(); 1656 1657 ActivityRecord lastResumedActivity = 1658 lastStack == null ? null :lastStack.mResumedActivity; 1659 ActivityState lastState = next.state; 1660 1661 mService.updateCpuStats(); 1662 1663 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1664 next.state = ActivityState.RESUMED; 1665 mResumedActivity = next; 1666 next.task.touchActiveTime(); 1667 mService.addRecentTaskLocked(next.task); 1668 mService.updateLruProcessLocked(next.app, true, null); 1669 updateLRUListLocked(next); 1670 mService.updateOomAdjLocked(); 1671 1672 // Have the window manager re-evaluate the orientation of 1673 // the screen based on the new activity order. 1674 boolean notUpdated = true; 1675 if (mStackSupervisor.isFrontStack(this)) { 1676 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1677 mService.mConfiguration, 1678 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1679 if (config != null) { 1680 next.frozenBeforeDestroy = true; 1681 } 1682 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1683 } 1684 1685 if (notUpdated) { 1686 // The configuration update wasn't able to keep the existing 1687 // instance of the activity, and instead started a new one. 1688 // We should be all done, but let's just make sure our activity 1689 // is still at the top and schedule another run if something 1690 // weird happened. 1691 ActivityRecord nextNext = topRunningActivityLocked(null); 1692 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1693 "Activity config changed during resume: " + next 1694 + ", new next: " + nextNext); 1695 if (nextNext != next) { 1696 // Do over! 1697 mStackSupervisor.scheduleResumeTopActivities(); 1698 } 1699 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1700 mNoAnimActivities.clear(); 1701 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1702 return true; 1703 } 1704 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1705 return false; 1706 } 1707 1708 try { 1709 // Deliver all pending results. 1710 ArrayList<ResultInfo> a = next.results; 1711 if (a != null) { 1712 final int N = a.size(); 1713 if (!next.finishing && N > 0) { 1714 if (DEBUG_RESULTS) Slog.v( 1715 TAG, "Delivering results to " + next 1716 + ": " + a); 1717 next.app.thread.scheduleSendResult(next.appToken, a); 1718 } 1719 } 1720 1721 if (next.newIntents != null) { 1722 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1723 } 1724 1725 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1726 next.userId, System.identityHashCode(next), 1727 next.task.taskId, next.shortComponentName); 1728 1729 next.sleeping = false; 1730 mService.showAskCompatModeDialogLocked(next); 1731 next.app.pendingUiClean = true; 1732 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1733 next.clearOptionsLocked(); 1734 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1735 mService.isNextTransitionForward(), resumeAnimOptions); 1736 1737 mStackSupervisor.checkReadyForSleepLocked(); 1738 1739 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1740 } catch (Exception e) { 1741 // Whoops, need to restart this activity! 1742 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1743 + lastState + ": " + next); 1744 next.state = lastState; 1745 if (lastStack != null) { 1746 lastStack.mResumedActivity = lastResumedActivity; 1747 } 1748 Slog.i(TAG, "Restarting because process died: " + next); 1749 if (!next.hasBeenLaunched) { 1750 next.hasBeenLaunched = true; 1751 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1752 mStackSupervisor.isFrontStack(lastStack)) { 1753 mWindowManager.setAppStartingWindow( 1754 next.appToken, next.packageName, next.theme, 1755 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1756 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1757 next.windowFlags, null, true); 1758 } 1759 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1760 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1761 return true; 1762 } 1763 1764 // From this point on, if something goes wrong there is no way 1765 // to recover the activity. 1766 try { 1767 next.visible = true; 1768 completeResumeLocked(next); 1769 } catch (Exception e) { 1770 // If any exception gets thrown, toss away this 1771 // activity and try the next one. 1772 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1773 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1774 "resume-exception", true); 1775 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1776 return true; 1777 } 1778 next.stopped = false; 1779 1780 } else { 1781 // Whoops, need to restart this activity! 1782 if (!next.hasBeenLaunched) { 1783 next.hasBeenLaunched = true; 1784 } else { 1785 if (SHOW_APP_STARTING_PREVIEW) { 1786 mWindowManager.setAppStartingWindow( 1787 next.appToken, next.packageName, next.theme, 1788 mService.compatibilityInfoForPackageLocked( 1789 next.info.applicationInfo), 1790 next.nonLocalizedLabel, 1791 next.labelRes, next.icon, next.logo, next.windowFlags, 1792 null, true); 1793 } 1794 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1795 } 1796 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1797 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1798 } 1799 1800 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1801 return true; 1802 } 1803 1804 private void insertTaskAtTop(TaskRecord task) { 1805 // If this is being moved to the top by another activity or being launched from the home 1806 // activity, set mOnTopOfHome accordingly. 1807 if (isOnHomeDisplay()) { 1808 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1809 final boolean fromHome = lastStack.isHomeStack(); 1810 if (!isHomeStack() && (fromHome || topTask() != task)) { 1811 task.setTaskToReturnTo(fromHome ? 1812 lastStack.topTask().taskType : APPLICATION_ACTIVITY_TYPE); 1813 } 1814 } else { 1815 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1816 } 1817 1818 mTaskHistory.remove(task); 1819 // Now put task at top. 1820 int stackNdx = mTaskHistory.size(); 1821 if (!isCurrentProfileLocked(task.userId)) { 1822 // Put non-current user tasks below current user tasks. 1823 while (--stackNdx >= 0) { 1824 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1825 break; 1826 } 1827 } 1828 ++stackNdx; 1829 } 1830 mTaskHistory.add(stackNdx, task); 1831 updateTaskMovement(task, true); 1832 } 1833 1834 final void startActivityLocked(ActivityRecord r, boolean newTask, 1835 boolean doResume, boolean keepCurTransition, Bundle options) { 1836 TaskRecord rTask = r.task; 1837 final int taskId = rTask.taskId; 1838 if (taskForIdLocked(taskId) == null || newTask) { 1839 // Last activity in task had been removed or ActivityManagerService is reusing task. 1840 // Insert or replace. 1841 // Might not even be in. 1842 insertTaskAtTop(rTask); 1843 mWindowManager.moveTaskToTop(taskId); 1844 } 1845 TaskRecord task = null; 1846 if (!newTask) { 1847 // If starting in an existing task, find where that is... 1848 boolean startIt = true; 1849 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1850 task = mTaskHistory.get(taskNdx); 1851 if (task == r.task) { 1852 // Here it is! Now, if this is not yet visible to the 1853 // user, then just add it without starting; it will 1854 // get started when the user navigates back to it. 1855 if (!startIt) { 1856 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1857 + task, new RuntimeException("here").fillInStackTrace()); 1858 task.addActivityToTop(r); 1859 r.putInHistory(); 1860 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1861 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1862 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1863 r.userId, r.info.configChanges); 1864 if (VALIDATE_TOKENS) { 1865 validateAppTokensLocked(); 1866 } 1867 ActivityOptions.abort(options); 1868 return; 1869 } 1870 break; 1871 } else if (task.numFullscreen > 0) { 1872 startIt = false; 1873 } 1874 } 1875 } 1876 1877 // Place a new activity at top of stack, so it is next to interact 1878 // with the user. 1879 1880 // If we are not placing the new activity frontmost, we do not want 1881 // to deliver the onUserLeaving callback to the actual frontmost 1882 // activity 1883 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1884 mStackSupervisor.mUserLeaving = false; 1885 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1886 "startActivity() behind front, mUserLeaving=false"); 1887 } 1888 1889 task = r.task; 1890 1891 // Slot the activity into the history stack and proceed 1892 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1893 new RuntimeException("here").fillInStackTrace()); 1894 task.addActivityToTop(r); 1895 task.setFrontOfTask(); 1896 1897 r.putInHistory(); 1898 if (!isHomeStack() || numActivities() > 0) { 1899 // We want to show the starting preview window if we are 1900 // switching to a new task, or the next activity's process is 1901 // not currently running. 1902 boolean showStartingIcon = newTask; 1903 ProcessRecord proc = r.app; 1904 if (proc == null) { 1905 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1906 } 1907 if (proc == null || proc.thread == null) { 1908 showStartingIcon = true; 1909 } 1910 if (DEBUG_TRANSITION) Slog.v(TAG, 1911 "Prepare open transition: starting " + r); 1912 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1913 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1914 mNoAnimActivities.add(r); 1915 } else { 1916 mWindowManager.prepareAppTransition(newTask 1917 ? AppTransition.TRANSIT_TASK_OPEN 1918 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1919 mNoAnimActivities.remove(r); 1920 } 1921 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1922 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1923 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1924 r.info.configChanges); 1925 boolean doShow = true; 1926 if (newTask) { 1927 // Even though this activity is starting fresh, we still need 1928 // to reset it to make sure we apply affinities to move any 1929 // existing activities from other tasks in to it. 1930 // If the caller has requested that the target task be 1931 // reset, then do so. 1932 if ((r.intent.getFlags() 1933 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1934 resetTaskIfNeededLocked(r, r); 1935 doShow = topRunningNonDelayedActivityLocked(null) == r; 1936 } 1937 } 1938 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1939 // Figure out if we are transitioning from another activity that is 1940 // "has the same starting icon" as the next one. This allows the 1941 // window manager to keep the previous window it had previously 1942 // created, if it still had one. 1943 ActivityRecord prev = mResumedActivity; 1944 if (prev != null) { 1945 // We don't want to reuse the previous starting preview if: 1946 // (1) The current activity is in a different task. 1947 if (prev.task != r.task) { 1948 prev = null; 1949 } 1950 // (2) The current activity is already displayed. 1951 else if (prev.nowVisible) { 1952 prev = null; 1953 } 1954 } 1955 mWindowManager.setAppStartingWindow( 1956 r.appToken, r.packageName, r.theme, 1957 mService.compatibilityInfoForPackageLocked( 1958 r.info.applicationInfo), r.nonLocalizedLabel, 1959 r.labelRes, r.icon, r.logo, r.windowFlags, 1960 prev != null ? prev.appToken : null, showStartingIcon); 1961 r.mStartingWindowShown = true; 1962 } 1963 } else { 1964 // If this is the first activity, don't do any fancy animations, 1965 // because there is nothing for it to animate on top of. 1966 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1967 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1968 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1969 r.info.configChanges); 1970 ActivityOptions.abort(options); 1971 options = null; 1972 } 1973 if (VALIDATE_TOKENS) { 1974 validateAppTokensLocked(); 1975 } 1976 1977 if (doResume) { 1978 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 1979 } 1980 } 1981 1982 final void validateAppTokensLocked() { 1983 mValidateAppTokens.clear(); 1984 mValidateAppTokens.ensureCapacity(numActivities()); 1985 final int numTasks = mTaskHistory.size(); 1986 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1987 TaskRecord task = mTaskHistory.get(taskNdx); 1988 final ArrayList<ActivityRecord> activities = task.mActivities; 1989 if (activities.isEmpty()) { 1990 continue; 1991 } 1992 TaskGroup group = new TaskGroup(); 1993 group.taskId = task.taskId; 1994 mValidateAppTokens.add(group); 1995 final int numActivities = activities.size(); 1996 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1997 final ActivityRecord r = activities.get(activityNdx); 1998 group.tokens.add(r.appToken); 1999 } 2000 } 2001 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2002 } 2003 2004 /** 2005 * Perform a reset of the given task, if needed as part of launching it. 2006 * Returns the new HistoryRecord at the top of the task. 2007 */ 2008 /** 2009 * Helper method for #resetTaskIfNeededLocked. 2010 * We are inside of the task being reset... we'll either finish this activity, push it out 2011 * for another task, or leave it as-is. 2012 * @param task The task containing the Activity (taskTop) that might be reset. 2013 * @param forceReset 2014 * @return An ActivityOptions that needs to be processed. 2015 */ 2016 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2017 ActivityOptions topOptions = null; 2018 2019 int replyChainEnd = -1; 2020 boolean canMoveOptions = true; 2021 2022 // We only do this for activities that are not the root of the task (since if we finish 2023 // the root, we may no longer have the task!). 2024 final ArrayList<ActivityRecord> activities = task.mActivities; 2025 final int numActivities = activities.size(); 2026 for (int i = numActivities - 1; i > 0; --i ) { 2027 ActivityRecord target = activities.get(i); 2028 2029 final int flags = target.info.flags; 2030 final boolean finishOnTaskLaunch = 2031 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2032 final boolean allowTaskReparenting = 2033 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2034 final boolean clearWhenTaskReset = 2035 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2036 2037 if (!finishOnTaskLaunch 2038 && !clearWhenTaskReset 2039 && target.resultTo != null) { 2040 // If this activity is sending a reply to a previous 2041 // activity, we can't do anything with it now until 2042 // we reach the start of the reply chain. 2043 // XXX note that we are assuming the result is always 2044 // to the previous activity, which is almost always 2045 // the case but we really shouldn't count on. 2046 if (replyChainEnd < 0) { 2047 replyChainEnd = i; 2048 } 2049 } else if (!finishOnTaskLaunch 2050 && !clearWhenTaskReset 2051 && allowTaskReparenting 2052 && target.taskAffinity != null 2053 && !target.taskAffinity.equals(task.affinity)) { 2054 // If this activity has an affinity for another 2055 // task, then we need to move it out of here. We will 2056 // move it as far out of the way as possible, to the 2057 // bottom of the activity stack. This also keeps it 2058 // correctly ordered with any activities we previously 2059 // moved. 2060 final ThumbnailHolder newThumbHolder; 2061 final TaskRecord targetTask; 2062 final ActivityRecord bottom = 2063 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2064 mTaskHistory.get(0).mActivities.get(0) : null; 2065 if (bottom != null && target.taskAffinity != null 2066 && target.taskAffinity.equals(bottom.task.affinity)) { 2067 // If the activity currently at the bottom has the 2068 // same task affinity as the one we are moving, 2069 // then merge it into the same task. 2070 targetTask = bottom.task; 2071 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2072 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2073 + " out to bottom task " + bottom.task); 2074 } else { 2075 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2076 null, null, null, false); 2077 newThumbHolder = targetTask; 2078 targetTask.affinityIntent = target.intent; 2079 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2080 + " out to new task " + target.task); 2081 } 2082 2083 target.thumbHolder = newThumbHolder; 2084 2085 final int targetTaskId = targetTask.taskId; 2086 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2087 2088 boolean noOptions = canMoveOptions; 2089 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2090 for (int srcPos = start; srcPos >= i; --srcPos) { 2091 final ActivityRecord p = activities.get(srcPos); 2092 if (p.finishing) { 2093 continue; 2094 } 2095 2096 ThumbnailHolder curThumbHolder = p.thumbHolder; 2097 canMoveOptions = false; 2098 if (noOptions && topOptions == null) { 2099 topOptions = p.takeOptionsLocked(); 2100 if (topOptions != null) { 2101 noOptions = false; 2102 } 2103 } 2104 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2105 + task + " adding to task=" + targetTask 2106 + " Callers=" + Debug.getCallers(4)); 2107 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2108 + " out to target's task " + target.task); 2109 p.setTask(targetTask, curThumbHolder, false); 2110 targetTask.addActivityAtBottom(p); 2111 2112 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2113 } 2114 2115 mWindowManager.moveTaskToBottom(targetTaskId); 2116 if (VALIDATE_TOKENS) { 2117 validateAppTokensLocked(); 2118 } 2119 2120 replyChainEnd = -1; 2121 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2122 // If the activity should just be removed -- either 2123 // because it asks for it, or the task should be 2124 // cleared -- then finish it and anything that is 2125 // part of its reply chain. 2126 int end; 2127 if (clearWhenTaskReset) { 2128 // In this case, we want to finish this activity 2129 // and everything above it, so be sneaky and pretend 2130 // like these are all in the reply chain. 2131 end = numActivities - 1; 2132 } else if (replyChainEnd < 0) { 2133 end = i; 2134 } else { 2135 end = replyChainEnd; 2136 } 2137 boolean noOptions = canMoveOptions; 2138 for (int srcPos = i; srcPos <= end; srcPos++) { 2139 ActivityRecord p = activities.get(srcPos); 2140 if (p.finishing) { 2141 continue; 2142 } 2143 canMoveOptions = false; 2144 if (noOptions && topOptions == null) { 2145 topOptions = p.takeOptionsLocked(); 2146 if (topOptions != null) { 2147 noOptions = false; 2148 } 2149 } 2150 if (DEBUG_TASKS) Slog.w(TAG, 2151 "resetTaskIntendedTask: calling finishActivity on " + p); 2152 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2153 end--; 2154 srcPos--; 2155 } 2156 } 2157 replyChainEnd = -1; 2158 } else { 2159 // If we were in the middle of a chain, well the 2160 // activity that started it all doesn't want anything 2161 // special, so leave it all as-is. 2162 replyChainEnd = -1; 2163 } 2164 } 2165 2166 return topOptions; 2167 } 2168 2169 /** 2170 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2171 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2172 * @param affinityTask The task we are looking for an affinity to. 2173 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2174 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2175 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2176 */ 2177 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2178 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2179 int replyChainEnd = -1; 2180 final int taskId = task.taskId; 2181 final String taskAffinity = task.affinity; 2182 2183 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2184 final int numActivities = activities.size(); 2185 // Do not operate on the root Activity. 2186 for (int i = numActivities - 1; i > 0; --i) { 2187 ActivityRecord target = activities.get(i); 2188 2189 final int flags = target.info.flags; 2190 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2191 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2192 2193 if (target.resultTo != null) { 2194 // If this activity is sending a reply to a previous 2195 // activity, we can't do anything with it now until 2196 // we reach the start of the reply chain. 2197 // XXX note that we are assuming the result is always 2198 // to the previous activity, which is almost always 2199 // the case but we really shouldn't count on. 2200 if (replyChainEnd < 0) { 2201 replyChainEnd = i; 2202 } 2203 } else if (topTaskIsHigher 2204 && allowTaskReparenting 2205 && taskAffinity != null 2206 && taskAffinity.equals(target.taskAffinity)) { 2207 // This activity has an affinity for our task. Either remove it if we are 2208 // clearing or move it over to our task. Note that 2209 // we currently punt on the case where we are resetting a 2210 // task that is not at the top but who has activities above 2211 // with an affinity to it... this is really not a normal 2212 // case, and we will need to later pull that task to the front 2213 // and usually at that point we will do the reset and pick 2214 // up those remaining activities. (This only happens if 2215 // someone starts an activity in a new task from an activity 2216 // in a task that is not currently on top.) 2217 if (forceReset || finishOnTaskLaunch) { 2218 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2219 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2220 for (int srcPos = start; srcPos >= i; --srcPos) { 2221 final ActivityRecord p = activities.get(srcPos); 2222 if (p.finishing) { 2223 continue; 2224 } 2225 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2226 } 2227 } else { 2228 if (taskInsertionPoint < 0) { 2229 taskInsertionPoint = task.mActivities.size(); 2230 2231 } 2232 2233 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2234 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2235 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2236 for (int srcPos = start; srcPos >= i; --srcPos) { 2237 final ActivityRecord p = activities.get(srcPos); 2238 p.setTask(task, null, false); 2239 task.addActivityAtIndex(taskInsertionPoint, p); 2240 2241 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2242 + " to stack at " + task, 2243 new RuntimeException("here").fillInStackTrace()); 2244 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2245 + " in to resetting task " + task); 2246 mWindowManager.setAppGroupId(p.appToken, taskId); 2247 } 2248 mWindowManager.moveTaskToTop(taskId); 2249 if (VALIDATE_TOKENS) { 2250 validateAppTokensLocked(); 2251 } 2252 2253 // Now we've moved it in to place... but what if this is 2254 // a singleTop activity and we have put it on top of another 2255 // instance of the same activity? Then we drop the instance 2256 // below so it remains singleTop. 2257 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2258 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2259 int targetNdx = taskActivities.indexOf(target); 2260 if (targetNdx > 0) { 2261 ActivityRecord p = taskActivities.get(targetNdx - 1); 2262 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2263 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2264 false); 2265 } 2266 } 2267 } 2268 } 2269 2270 replyChainEnd = -1; 2271 } 2272 } 2273 return taskInsertionPoint; 2274 } 2275 2276 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2277 ActivityRecord newActivity) { 2278 boolean forceReset = 2279 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2280 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2281 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2282 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2283 forceReset = true; 2284 } 2285 } 2286 2287 final TaskRecord task = taskTop.task; 2288 2289 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2290 * for remaining tasks. Used for later tasks to reparent to task. */ 2291 boolean taskFound = false; 2292 2293 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2294 ActivityOptions topOptions = null; 2295 2296 // Preserve the location for reparenting in the new task. 2297 int reparentInsertionPoint = -1; 2298 2299 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2300 final TaskRecord targetTask = mTaskHistory.get(i); 2301 2302 if (targetTask == task) { 2303 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2304 taskFound = true; 2305 } else { 2306 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2307 taskFound, forceReset, reparentInsertionPoint); 2308 } 2309 } 2310 2311 int taskNdx = mTaskHistory.indexOf(task); 2312 do { 2313 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2314 } while (taskTop == null && taskNdx >= 0); 2315 2316 if (topOptions != null) { 2317 // If we got some ActivityOptions from an activity on top that 2318 // was removed from the task, propagate them to the new real top. 2319 if (taskTop != null) { 2320 taskTop.updateOptionsLocked(topOptions); 2321 } else { 2322 topOptions.abort(); 2323 } 2324 } 2325 2326 return taskTop; 2327 } 2328 2329 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2330 String resultWho, int requestCode, int resultCode, Intent data) { 2331 2332 if (callingUid > 0) { 2333 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2334 data, r.getUriPermissionsLocked()); 2335 } 2336 2337 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2338 + " : who=" + resultWho + " req=" + requestCode 2339 + " res=" + resultCode + " data=" + data); 2340 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2341 try { 2342 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2343 list.add(new ResultInfo(resultWho, requestCode, 2344 resultCode, data)); 2345 r.app.thread.scheduleSendResult(r.appToken, list); 2346 return; 2347 } catch (Exception e) { 2348 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2349 } 2350 } 2351 2352 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2353 } 2354 2355 private void adjustFocusedActivityLocked(ActivityRecord r) { 2356 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2357 ActivityRecord next = topRunningActivityLocked(null); 2358 if (next != r) { 2359 final TaskRecord task = r.task; 2360 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2361 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2362 } 2363 } 2364 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2365 if (top != null) { 2366 mService.setFocusedActivityLocked(top); 2367 } 2368 } 2369 } 2370 2371 final void stopActivityLocked(ActivityRecord r) { 2372 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2373 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2374 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2375 if (!r.finishing) { 2376 if (!mService.isSleeping()) { 2377 if (DEBUG_STATES) { 2378 Slog.d(TAG, "no-history finish of " + r); 2379 } 2380 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2381 "no-history", false); 2382 } else { 2383 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2384 + " on stop because we're just sleeping"); 2385 } 2386 } 2387 } 2388 2389 if (r.app != null && r.app.thread != null) { 2390 adjustFocusedActivityLocked(r); 2391 r.resumeKeyDispatchingLocked(); 2392 try { 2393 r.stopped = false; 2394 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2395 + " (stop requested)"); 2396 r.state = ActivityState.STOPPING; 2397 if (DEBUG_VISBILITY) Slog.v( 2398 TAG, "Stopping visible=" + r.visible + " for " + r); 2399 if (!r.visible) { 2400 mWindowManager.setAppVisibility(r.appToken, false); 2401 } 2402 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2403 if (mService.isSleepingOrShuttingDown()) { 2404 r.setSleeping(true); 2405 } 2406 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2407 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2408 } catch (Exception e) { 2409 // Maybe just ignore exceptions here... if the process 2410 // has crashed, our death notification will clean things 2411 // up. 2412 Slog.w(TAG, "Exception thrown during pause", e); 2413 // Just in case, assume it to be stopped. 2414 r.stopped = true; 2415 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2416 r.state = ActivityState.STOPPED; 2417 if (r.configDestroy) { 2418 destroyActivityLocked(r, true, false, "stop-except"); 2419 } 2420 } 2421 } 2422 } 2423 2424 /** 2425 * @return Returns true if the activity is being finished, false if for 2426 * some reason it is being left as-is. 2427 */ 2428 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2429 Intent resultData, String reason, boolean oomAdj) { 2430 ActivityRecord r = isInStackLocked(token); 2431 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2432 TAG, "Finishing activity token=" + token + " r=" 2433 + ", result=" + resultCode + ", data=" + resultData 2434 + ", reason=" + reason); 2435 if (r == null) { 2436 return false; 2437 } 2438 2439 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2440 return true; 2441 } 2442 2443 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2444 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2445 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2446 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2447 ActivityRecord r = activities.get(activityNdx); 2448 if (r.resultTo == self && r.requestCode == requestCode) { 2449 if ((r.resultWho == null && resultWho == null) || 2450 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2451 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2452 false); 2453 } 2454 } 2455 } 2456 } 2457 mService.updateOomAdjLocked(); 2458 } 2459 2460 final void finishTopRunningActivityLocked(ProcessRecord app) { 2461 ActivityRecord r = topRunningActivityLocked(null); 2462 if (r != null && r.app == app) { 2463 // If the top running activity is from this crashing 2464 // process, then terminate it to avoid getting in a loop. 2465 Slog.w(TAG, " Force finishing activity " 2466 + r.intent.getComponent().flattenToShortString()); 2467 int taskNdx = mTaskHistory.indexOf(r.task); 2468 int activityNdx = r.task.mActivities.indexOf(r); 2469 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2470 // Also terminate any activities below it that aren't yet 2471 // stopped, to avoid a situation where one will get 2472 // re-start our crashing activity once it gets resumed again. 2473 --activityNdx; 2474 if (activityNdx < 0) { 2475 do { 2476 --taskNdx; 2477 if (taskNdx < 0) { 2478 break; 2479 } 2480 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2481 } while (activityNdx < 0); 2482 } 2483 if (activityNdx >= 0) { 2484 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2485 if (r.state == ActivityState.RESUMED 2486 || r.state == ActivityState.PAUSING 2487 || r.state == ActivityState.PAUSED) { 2488 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2489 Slog.w(TAG, " Force finishing activity " 2490 + r.intent.getComponent().flattenToShortString()); 2491 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2492 } 2493 } 2494 } 2495 } 2496 } 2497 2498 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2499 ArrayList<ActivityRecord> activities = r.task.mActivities; 2500 for (int index = activities.indexOf(r); index >= 0; --index) { 2501 ActivityRecord cur = activities.get(index); 2502 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2503 break; 2504 } 2505 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2506 } 2507 return true; 2508 } 2509 2510 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2511 // send the result 2512 ActivityRecord resultTo = r.resultTo; 2513 if (resultTo != null) { 2514 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2515 + " who=" + r.resultWho + " req=" + r.requestCode 2516 + " res=" + resultCode + " data=" + resultData); 2517 if (r.info.applicationInfo.uid > 0) { 2518 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2519 resultTo.packageName, resultData, 2520 resultTo.getUriPermissionsLocked()); 2521 } 2522 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2523 resultData); 2524 r.resultTo = null; 2525 } 2526 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2527 2528 // Make sure this HistoryRecord is not holding on to other resources, 2529 // because clients have remote IPC references to this object so we 2530 // can't assume that will go away and want to avoid circular IPC refs. 2531 r.results = null; 2532 r.pendingResults = null; 2533 r.newIntents = null; 2534 r.icicle = null; 2535 } 2536 2537 /** 2538 * @return Returns true if this activity has been removed from the history 2539 * list, or false if it is still in the list and will be removed later. 2540 */ 2541 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2542 String reason, boolean oomAdj) { 2543 if (r.finishing) { 2544 Slog.w(TAG, "Duplicate finish request for " + r); 2545 return false; 2546 } 2547 2548 r.makeFinishing(); 2549 final TaskRecord task = r.task; 2550 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2551 r.userId, System.identityHashCode(r), 2552 task.taskId, r.shortComponentName, reason); 2553 final ArrayList<ActivityRecord> activities = task.mActivities; 2554 final int index = activities.indexOf(r); 2555 if (index < (activities.size() - 1)) { 2556 task.setFrontOfTask(); 2557 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2558 // If the caller asked that this activity (and all above it) 2559 // be cleared when the task is reset, don't lose that information, 2560 // but propagate it up to the next activity. 2561 ActivityRecord next = activities.get(index+1); 2562 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2563 } 2564 } 2565 2566 r.pauseKeyDispatchingLocked(); 2567 2568 adjustFocusedActivityLocked(r); 2569 2570 finishActivityResultsLocked(r, resultCode, resultData); 2571 2572 if (mResumedActivity == r) { 2573 boolean endTask = index <= 0; 2574 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2575 "Prepare close transition: finishing " + r); 2576 mWindowManager.prepareAppTransition(endTask 2577 ? AppTransition.TRANSIT_TASK_CLOSE 2578 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2579 2580 // Tell window manager to prepare for this one to be removed. 2581 mWindowManager.setAppVisibility(r.appToken, false); 2582 2583 if (mPausingActivity == null) { 2584 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2585 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2586 startPausingLocked(false, false); 2587 } 2588 2589 if (endTask) { 2590 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2591 } 2592 } else if (r.state != ActivityState.PAUSING) { 2593 // If the activity is PAUSING, we will complete the finish once 2594 // it is done pausing; else we can just directly finish it here. 2595 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2596 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2597 } else { 2598 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2599 } 2600 2601 return false; 2602 } 2603 2604 static final int FINISH_IMMEDIATELY = 0; 2605 static final int FINISH_AFTER_PAUSE = 1; 2606 static final int FINISH_AFTER_VISIBLE = 2; 2607 2608 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2609 // First things first: if this activity is currently visible, 2610 // and the resumed activity is not yet visible, then hold off on 2611 // finishing until the resumed one becomes visible. 2612 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2613 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2614 mStackSupervisor.mStoppingActivities.add(r); 2615 if (mStackSupervisor.mStoppingActivities.size() > 3 2616 || r.frontOfTask && mTaskHistory.size() <= 1) { 2617 // If we already have a few activities waiting to stop, 2618 // then give up on things going idle and start clearing 2619 // them out. Or if r is the last of activity of the last task the stack 2620 // will be empty and must be cleared immediately. 2621 mStackSupervisor.scheduleIdleLocked(); 2622 } else { 2623 mStackSupervisor.checkReadyForSleepLocked(); 2624 } 2625 } 2626 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2627 + " (finish requested)"); 2628 r.state = ActivityState.STOPPING; 2629 if (oomAdj) { 2630 mService.updateOomAdjLocked(); 2631 } 2632 return r; 2633 } 2634 2635 // make sure the record is cleaned out of other places. 2636 mStackSupervisor.mStoppingActivities.remove(r); 2637 mStackSupervisor.mGoingToSleepActivities.remove(r); 2638 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2639 if (mResumedActivity == r) { 2640 mResumedActivity = null; 2641 } 2642 final ActivityState prevState = r.state; 2643 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2644 r.state = ActivityState.FINISHING; 2645 2646 if (mode == FINISH_IMMEDIATELY 2647 || prevState == ActivityState.STOPPED 2648 || prevState == ActivityState.INITIALIZING) { 2649 // If this activity is already stopped, we can just finish 2650 // it right now. 2651 boolean activityRemoved = destroyActivityLocked(r, true, 2652 oomAdj, "finish-imm"); 2653 if (activityRemoved) { 2654 mStackSupervisor.resumeTopActivitiesLocked(); 2655 } 2656 return activityRemoved ? null : r; 2657 } 2658 2659 // Need to go through the full pause cycle to get this 2660 // activity into the stopped state and then finish it. 2661 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2662 mStackSupervisor.mFinishingActivities.add(r); 2663 r.resumeKeyDispatchingLocked(); 2664 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2665 return r; 2666 } 2667 2668 void finishAllActivitiesLocked() { 2669 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2670 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2671 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2672 final ActivityRecord r = activities.get(activityNdx); 2673 if (r.finishing) { 2674 continue; 2675 } 2676 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2677 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2678 } 2679 } 2680 } 2681 2682 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2683 Intent resultData) { 2684 final ActivityRecord srec = ActivityRecord.forToken(token); 2685 final TaskRecord task = srec.task; 2686 final ArrayList<ActivityRecord> activities = task.mActivities; 2687 final int start = activities.indexOf(srec); 2688 if (!mTaskHistory.contains(task) || (start < 0)) { 2689 return false; 2690 } 2691 int finishTo = start - 1; 2692 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2693 boolean foundParentInTask = false; 2694 final ComponentName dest = destIntent.getComponent(); 2695 if (start > 0 && dest != null) { 2696 for (int i = finishTo; i >= 0; i--) { 2697 ActivityRecord r = activities.get(i); 2698 if (r.info.packageName.equals(dest.getPackageName()) && 2699 r.info.name.equals(dest.getClassName())) { 2700 finishTo = i; 2701 parent = r; 2702 foundParentInTask = true; 2703 break; 2704 } 2705 } 2706 } 2707 2708 IActivityController controller = mService.mController; 2709 if (controller != null) { 2710 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2711 if (next != null) { 2712 // ask watcher if this is allowed 2713 boolean resumeOK = true; 2714 try { 2715 resumeOK = controller.activityResuming(next.packageName); 2716 } catch (RemoteException e) { 2717 mService.mController = null; 2718 Watchdog.getInstance().setActivityController(null); 2719 } 2720 2721 if (!resumeOK) { 2722 return false; 2723 } 2724 } 2725 } 2726 final long origId = Binder.clearCallingIdentity(); 2727 for (int i = start; i > finishTo; i--) { 2728 ActivityRecord r = activities.get(i); 2729 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2730 // Only return the supplied result for the first activity finished 2731 resultCode = Activity.RESULT_CANCELED; 2732 resultData = null; 2733 } 2734 2735 if (parent != null && foundParentInTask) { 2736 final int parentLaunchMode = parent.info.launchMode; 2737 final int destIntentFlags = destIntent.getFlags(); 2738 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2739 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2740 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2741 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2742 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2743 } else { 2744 try { 2745 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2746 destIntent.getComponent(), 0, srec.userId); 2747 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2748 null, aInfo, null, null, parent.appToken, null, 2749 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2750 0, null, true, null, null); 2751 foundParentInTask = res == ActivityManager.START_SUCCESS; 2752 } catch (RemoteException e) { 2753 foundParentInTask = false; 2754 } 2755 requestFinishActivityLocked(parent.appToken, resultCode, 2756 resultData, "navigate-up", true); 2757 } 2758 } 2759 Binder.restoreCallingIdentity(origId); 2760 return foundParentInTask; 2761 } 2762 /** 2763 * Perform the common clean-up of an activity record. This is called both 2764 * as part of destroyActivityLocked() (when destroying the client-side 2765 * representation) and cleaning things up as a result of its hosting 2766 * processing going away, in which case there is no remaining client-side 2767 * state to destroy so only the cleanup here is needed. 2768 */ 2769 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2770 boolean setState) { 2771 if (mResumedActivity == r) { 2772 mResumedActivity = null; 2773 } 2774 if (mPausingActivity == r) { 2775 mPausingActivity = null; 2776 } 2777 mService.clearFocusedActivity(r); 2778 2779 r.configDestroy = false; 2780 r.frozenBeforeDestroy = false; 2781 2782 if (setState) { 2783 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2784 r.state = ActivityState.DESTROYED; 2785 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2786 r.app = null; 2787 } 2788 2789 // Make sure this record is no longer in the pending finishes list. 2790 // This could happen, for example, if we are trimming activities 2791 // down to the max limit while they are still waiting to finish. 2792 mStackSupervisor.mFinishingActivities.remove(r); 2793 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2794 2795 // Remove any pending results. 2796 if (r.finishing && r.pendingResults != null) { 2797 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2798 PendingIntentRecord rec = apr.get(); 2799 if (rec != null) { 2800 mService.cancelIntentSenderLocked(rec, false); 2801 } 2802 } 2803 r.pendingResults = null; 2804 } 2805 2806 if (cleanServices) { 2807 cleanUpActivityServicesLocked(r); 2808 } 2809 2810 // Get rid of any pending idle timeouts. 2811 removeTimeoutsForActivityLocked(r); 2812 } 2813 2814 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2815 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2816 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2817 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2818 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2819 r.finishLaunchTickingLocked(); 2820 } 2821 2822 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2823 mStackSupervisor.removeChildActivityContainers(r); 2824 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2825 r.makeFinishing(); 2826 if (DEBUG_ADD_REMOVE) { 2827 RuntimeException here = new RuntimeException("here"); 2828 here.fillInStackTrace(); 2829 Slog.i(TAG, "Removing activity " + r + " from stack"); 2830 } 2831 r.takeFromHistory(); 2832 removeTimeoutsForActivityLocked(r); 2833 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2834 r.state = ActivityState.DESTROYED; 2835 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2836 r.app = null; 2837 mWindowManager.removeAppToken(r.appToken); 2838 if (VALIDATE_TOKENS) { 2839 validateAppTokensLocked(); 2840 } 2841 final TaskRecord task = r.task; 2842 if (task != null && task.removeActivity(r)) { 2843 if (DEBUG_STACK) Slog.i(TAG, 2844 "removeActivityFromHistoryLocked: last activity removed from " + this); 2845 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 2846 task.isOverHomeStack()) { 2847 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2848 } 2849 removeTask(task); 2850 } 2851 cleanUpActivityServicesLocked(r); 2852 r.removeUriPermissionsLocked(); 2853 } 2854 2855 /** 2856 * Perform clean-up of service connections in an activity record. 2857 */ 2858 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2859 // Throw away any services that have been bound by this activity. 2860 if (r.connections != null) { 2861 Iterator<ConnectionRecord> it = r.connections.iterator(); 2862 while (it.hasNext()) { 2863 ConnectionRecord c = it.next(); 2864 mService.mServices.removeConnectionLocked(c, null, r); 2865 } 2866 r.connections = null; 2867 } 2868 } 2869 2870 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2871 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2872 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2873 mHandler.sendMessage(msg); 2874 } 2875 2876 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2877 boolean lastIsOpaque = false; 2878 boolean activityRemoved = false; 2879 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2880 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2881 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2882 final ActivityRecord r = activities.get(activityNdx); 2883 if (r.finishing) { 2884 continue; 2885 } 2886 if (r.fullscreen) { 2887 lastIsOpaque = true; 2888 } 2889 if (owner != null && r.app != owner) { 2890 continue; 2891 } 2892 if (!lastIsOpaque) { 2893 continue; 2894 } 2895 // We can destroy this one if we have its icicle saved and 2896 // it is not in the process of pausing/stopping/finishing. 2897 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2898 && r.haveState && !r.visible && r.stopped 2899 && r.state != ActivityState.DESTROYING 2900 && r.state != ActivityState.DESTROYED) { 2901 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2902 + " resumed=" + mResumedActivity 2903 + " pausing=" + mPausingActivity); 2904 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2905 activityRemoved = true; 2906 } 2907 } 2908 } 2909 } 2910 if (activityRemoved) { 2911 mStackSupervisor.resumeTopActivitiesLocked(); 2912 } 2913 } 2914 2915 /** 2916 * Destroy the current CLIENT SIDE instance of an activity. This may be 2917 * called both when actually finishing an activity, or when performing 2918 * a configuration switch where we destroy the current client-side object 2919 * but then create a new client-side object for this same HistoryRecord. 2920 */ 2921 final boolean destroyActivityLocked(ActivityRecord r, 2922 boolean removeFromApp, boolean oomAdj, String reason) { 2923 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2924 TAG, "Removing activity from " + reason + ": token=" + r 2925 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2926 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2927 r.userId, System.identityHashCode(r), 2928 r.task.taskId, r.shortComponentName, reason); 2929 2930 boolean removedFromHistory = false; 2931 2932 cleanUpActivityLocked(r, false, false); 2933 2934 final boolean hadApp = r.app != null; 2935 2936 if (hadApp) { 2937 if (removeFromApp) { 2938 r.app.activities.remove(r); 2939 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2940 mService.mHeavyWeightProcess = null; 2941 mService.mHandler.sendEmptyMessage( 2942 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2943 } 2944 if (r.app.activities.isEmpty()) { 2945 // No longer have activities, so update LRU list and oom adj. 2946 mService.updateLruProcessLocked(r.app, false, null); 2947 mService.updateOomAdjLocked(); 2948 } 2949 } 2950 2951 boolean skipDestroy = false; 2952 2953 try { 2954 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2955 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2956 r.configChangeFlags); 2957 } catch (Exception e) { 2958 // We can just ignore exceptions here... if the process 2959 // has crashed, our death notification will clean things 2960 // up. 2961 //Slog.w(TAG, "Exception thrown during finish", e); 2962 if (r.finishing) { 2963 removeActivityFromHistoryLocked(r); 2964 removedFromHistory = true; 2965 skipDestroy = true; 2966 } 2967 } 2968 2969 r.nowVisible = false; 2970 2971 // If the activity is finishing, we need to wait on removing it 2972 // from the list to give it a chance to do its cleanup. During 2973 // that time it may make calls back with its token so we need to 2974 // be able to find it on the list and so we don't want to remove 2975 // it from the list yet. Otherwise, we can just immediately put 2976 // it in the destroyed state since we are not removing it from the 2977 // list. 2978 if (r.finishing && !skipDestroy) { 2979 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2980 + " (destroy requested)"); 2981 r.state = ActivityState.DESTROYING; 2982 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2983 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2984 } else { 2985 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2986 r.state = ActivityState.DESTROYED; 2987 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2988 r.app = null; 2989 } 2990 } else { 2991 // remove this record from the history. 2992 if (r.finishing) { 2993 removeActivityFromHistoryLocked(r); 2994 removedFromHistory = true; 2995 } else { 2996 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2997 r.state = ActivityState.DESTROYED; 2998 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2999 r.app = null; 3000 } 3001 } 3002 3003 r.configChangeFlags = 0; 3004 3005 if (!mLRUActivities.remove(r) && hadApp) { 3006 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3007 } 3008 3009 return removedFromHistory; 3010 } 3011 3012 final void activityDestroyedLocked(IBinder token) { 3013 final long origId = Binder.clearCallingIdentity(); 3014 try { 3015 ActivityRecord r = ActivityRecord.forToken(token); 3016 if (r != null) { 3017 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3018 } 3019 3020 if (isInStackLocked(token) != null) { 3021 if (r.state == ActivityState.DESTROYING) { 3022 cleanUpActivityLocked(r, true, false); 3023 removeActivityFromHistoryLocked(r); 3024 } 3025 } 3026 mStackSupervisor.resumeTopActivitiesLocked(); 3027 } finally { 3028 Binder.restoreCallingIdentity(origId); 3029 } 3030 } 3031 3032 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3033 ProcessRecord app, String listName) { 3034 int i = list.size(); 3035 if (DEBUG_CLEANUP) Slog.v( 3036 TAG, "Removing app " + app + " from list " + listName 3037 + " with " + i + " entries"); 3038 while (i > 0) { 3039 i--; 3040 ActivityRecord r = list.get(i); 3041 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3042 if (r.app == app) { 3043 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3044 list.remove(i); 3045 removeTimeoutsForActivityLocked(r); 3046 } 3047 } 3048 } 3049 3050 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3051 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3052 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3053 "mStoppingActivities"); 3054 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3055 "mGoingToSleepActivities"); 3056 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3057 "mWaitingVisibleActivities"); 3058 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3059 "mFinishingActivities"); 3060 3061 boolean hasVisibleActivities = false; 3062 3063 // Clean out the history list. 3064 int i = numActivities(); 3065 if (DEBUG_CLEANUP) Slog.v( 3066 TAG, "Removing app " + app + " from history with " + i + " entries"); 3067 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3068 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3069 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3070 final ActivityRecord r = activities.get(activityNdx); 3071 --i; 3072 if (DEBUG_CLEANUP) Slog.v( 3073 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3074 if (r.app == app) { 3075 boolean remove; 3076 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3077 // Don't currently have state for the activity, or 3078 // it is finishing -- always remove it. 3079 remove = true; 3080 } else if (r.launchCount > 2 && 3081 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3082 // We have launched this activity too many times since it was 3083 // able to run, so give up and remove it. 3084 remove = true; 3085 } else { 3086 // The process may be gone, but the activity lives on! 3087 remove = false; 3088 } 3089 if (remove) { 3090 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3091 RuntimeException here = new RuntimeException("here"); 3092 here.fillInStackTrace(); 3093 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3094 + ": haveState=" + r.haveState 3095 + " stateNotNeeded=" + r.stateNotNeeded 3096 + " finishing=" + r.finishing 3097 + " state=" + r.state, here); 3098 } 3099 if (!r.finishing) { 3100 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3101 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3102 r.userId, System.identityHashCode(r), 3103 r.task.taskId, r.shortComponentName, 3104 "proc died without state saved"); 3105 if (r.state == ActivityState.RESUMED) { 3106 mService.updateUsageStats(r, false); 3107 } 3108 } 3109 removeActivityFromHistoryLocked(r); 3110 3111 } else { 3112 // We have the current state for this activity, so 3113 // it can be restarted later when needed. 3114 if (localLOGV) Slog.v( 3115 TAG, "Keeping entry, setting app to null"); 3116 if (r.visible) { 3117 hasVisibleActivities = true; 3118 } 3119 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3120 + r); 3121 r.app = null; 3122 r.nowVisible = false; 3123 if (!r.haveState) { 3124 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3125 "App died, clearing saved state of " + r); 3126 r.icicle = null; 3127 } 3128 } 3129 3130 cleanUpActivityLocked(r, true, true); 3131 } 3132 } 3133 } 3134 3135 return hasVisibleActivities; 3136 } 3137 3138 final void updateTransitLocked(int transit, Bundle options) { 3139 if (options != null) { 3140 ActivityRecord r = topRunningActivityLocked(null); 3141 if (r != null && r.state != ActivityState.RESUMED) { 3142 r.updateOptionsLocked(options); 3143 } else { 3144 ActivityOptions.abort(options); 3145 } 3146 } 3147 mWindowManager.prepareAppTransition(transit, false); 3148 } 3149 3150 void updateTaskMovement(TaskRecord task, boolean toFront) { 3151 if (task.isPersistable) { 3152 task.mLastTimeMoved = System.currentTimeMillis(); 3153 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3154 // recently will be most negative, tasks sent to the bottom before that will be less 3155 // negative. Similarly for recent tasks moved to the top which will be most positive. 3156 if (!toFront) { 3157 task.mLastTimeMoved *= -1; 3158 } 3159 } 3160 } 3161 3162 void moveHomeStackTaskToTop(int homeStackTaskType) { 3163 final int top = mTaskHistory.size() - 1; 3164 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3165 final TaskRecord task = mTaskHistory.get(taskNdx); 3166 if (task.taskType == homeStackTaskType) { 3167 if (DEBUG_TASKS || DEBUG_STACK) 3168 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3169 mTaskHistory.remove(taskNdx); 3170 mTaskHistory.add(top, task); 3171 updateTaskMovement(task, true); 3172 mWindowManager.moveTaskToTop(task.taskId); 3173 return; 3174 } 3175 } 3176 } 3177 3178 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3179 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3180 3181 final int numTasks = mTaskHistory.size(); 3182 final int index = mTaskHistory.indexOf(tr); 3183 if (numTasks == 0 || index < 0) { 3184 // nothing to do! 3185 if (reason != null && 3186 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3187 ActivityOptions.abort(options); 3188 } else { 3189 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3190 } 3191 return; 3192 } 3193 3194 moveToFront(); 3195 3196 // Shift all activities with this task up to the top 3197 // of the stack, keeping them in the same internal order. 3198 insertTaskAtTop(tr); 3199 3200 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3201 if (reason != null && 3202 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3203 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3204 ActivityRecord r = topRunningActivityLocked(null); 3205 if (r != null) { 3206 mNoAnimActivities.add(r); 3207 } 3208 ActivityOptions.abort(options); 3209 } else { 3210 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3211 } 3212 3213 mWindowManager.moveTaskToTop(tr.taskId); 3214 3215 mStackSupervisor.resumeTopActivitiesLocked(); 3216 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3217 3218 if (VALIDATE_TOKENS) { 3219 validateAppTokensLocked(); 3220 } 3221 } 3222 3223 /** 3224 * Worker method for rearranging history stack. Implements the function of moving all 3225 * activities for a specific task (gathering them if disjoint) into a single group at the 3226 * bottom of the stack. 3227 * 3228 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3229 * to premeptively cancel the move. 3230 * 3231 * @param taskId The taskId to collect and move to the bottom. 3232 * @return Returns true if the move completed, false if not. 3233 */ 3234 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3235 final TaskRecord tr = taskForIdLocked(taskId); 3236 if (tr == null) { 3237 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3238 return false; 3239 } 3240 3241 Slog.i(TAG, "moveTaskToBack: " + tr); 3242 3243 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3244 3245 // If we have a watcher, preflight the move before committing to it. First check 3246 // for *other* available tasks, but if none are available, then try again allowing the 3247 // current task to be selected. 3248 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3249 ActivityRecord next = topRunningActivityLocked(null, taskId); 3250 if (next == null) { 3251 next = topRunningActivityLocked(null, 0); 3252 } 3253 if (next != null) { 3254 // ask watcher if this is allowed 3255 boolean moveOK = true; 3256 try { 3257 moveOK = mService.mController.activityResuming(next.packageName); 3258 } catch (RemoteException e) { 3259 mService.mController = null; 3260 Watchdog.getInstance().setActivityController(null); 3261 } 3262 if (!moveOK) { 3263 return false; 3264 } 3265 } 3266 } 3267 3268 if (DEBUG_TRANSITION) Slog.v(TAG, 3269 "Prepare to back transition: task=" + taskId); 3270 3271 mTaskHistory.remove(tr); 3272 mTaskHistory.add(0, tr); 3273 updateTaskMovement(tr, false); 3274 3275 // There is an assumption that moving a task to the back moves it behind the home activity. 3276 // We make sure here that some activity in the stack will launch home. 3277 int numTasks = mTaskHistory.size(); 3278 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3279 final TaskRecord task = mTaskHistory.get(taskNdx); 3280 if (task.isOverHomeStack()) { 3281 break; 3282 } 3283 if (taskNdx == 1) { 3284 // Set the last task before tr to go to home. 3285 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3286 } 3287 } 3288 3289 if (reason != null && 3290 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3291 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3292 ActivityRecord r = topRunningActivityLocked(null); 3293 if (r != null) { 3294 mNoAnimActivities.add(r); 3295 } 3296 } else { 3297 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3298 } 3299 mWindowManager.moveTaskToBottom(taskId); 3300 3301 if (VALIDATE_TOKENS) { 3302 validateAppTokensLocked(); 3303 } 3304 3305 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3306 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3307 final int taskToReturnTo = tr.getTaskToReturnTo(); 3308 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3309 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3310 } 3311 3312 mStackSupervisor.resumeTopActivitiesLocked(); 3313 return true; 3314 } 3315 3316 static final void logStartActivity(int tag, ActivityRecord r, 3317 TaskRecord task) { 3318 final Uri data = r.intent.getData(); 3319 final String strData = data != null ? data.toSafeString() : null; 3320 3321 EventLog.writeEvent(tag, 3322 r.userId, System.identityHashCode(r), task.taskId, 3323 r.shortComponentName, r.intent.getAction(), 3324 r.intent.getType(), strData, r.intent.getFlags()); 3325 } 3326 3327 /** 3328 * Make sure the given activity matches the current configuration. Returns 3329 * false if the activity had to be destroyed. Returns true if the 3330 * configuration is the same, or the activity will remain running as-is 3331 * for whatever reason. Ensures the HistoryRecord is updated with the 3332 * correct configuration and all other bookkeeping is handled. 3333 */ 3334 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3335 int globalChanges) { 3336 if (mConfigWillChange) { 3337 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3338 "Skipping config check (will change): " + r); 3339 return true; 3340 } 3341 3342 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3343 "Ensuring correct configuration: " + r); 3344 3345 // Short circuit: if the two configurations are the exact same 3346 // object (the common case), then there is nothing to do. 3347 Configuration newConfig = mService.mConfiguration; 3348 if (r.configuration == newConfig && !r.forceNewConfig) { 3349 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3350 "Configuration unchanged in " + r); 3351 return true; 3352 } 3353 3354 // We don't worry about activities that are finishing. 3355 if (r.finishing) { 3356 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3357 "Configuration doesn't matter in finishing " + r); 3358 r.stopFreezingScreenLocked(false); 3359 return true; 3360 } 3361 3362 // Okay we now are going to make this activity have the new config. 3363 // But then we need to figure out how it needs to deal with that. 3364 Configuration oldConfig = r.configuration; 3365 r.configuration = newConfig; 3366 3367 // Determine what has changed. May be nothing, if this is a config 3368 // that has come back from the app after going idle. In that case 3369 // we just want to leave the official config object now in the 3370 // activity and do nothing else. 3371 final int changes = oldConfig.diff(newConfig); 3372 if (changes == 0 && !r.forceNewConfig) { 3373 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3374 "Configuration no differences in " + r); 3375 return true; 3376 } 3377 3378 // If the activity isn't currently running, just leave the new 3379 // configuration and it will pick that up next time it starts. 3380 if (r.app == null || r.app.thread == null) { 3381 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3382 "Configuration doesn't matter not running " + r); 3383 r.stopFreezingScreenLocked(false); 3384 r.forceNewConfig = false; 3385 return true; 3386 } 3387 3388 // Figure out how to handle the changes between the configurations. 3389 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3390 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3391 + Integer.toHexString(changes) + ", handles=0x" 3392 + Integer.toHexString(r.info.getRealConfigChanged()) 3393 + ", newConfig=" + newConfig); 3394 } 3395 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3396 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3397 r.configChangeFlags |= changes; 3398 r.startFreezingScreenLocked(r.app, globalChanges); 3399 r.forceNewConfig = false; 3400 if (r.app == null || r.app.thread == null) { 3401 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3402 "Config is destroying non-running " + r); 3403 destroyActivityLocked(r, true, false, "config"); 3404 } else if (r.state == ActivityState.PAUSING) { 3405 // A little annoying: we are waiting for this activity to 3406 // finish pausing. Let's not do anything now, but just 3407 // flag that it needs to be restarted when done pausing. 3408 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3409 "Config is skipping already pausing " + r); 3410 r.configDestroy = true; 3411 return true; 3412 } else if (r.state == ActivityState.RESUMED) { 3413 // Try to optimize this case: the configuration is changing 3414 // and we need to restart the top, resumed activity. 3415 // Instead of doing the normal handshaking, just say 3416 // "restart!". 3417 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3418 "Config is relaunching resumed " + r); 3419 relaunchActivityLocked(r, r.configChangeFlags, true); 3420 r.configChangeFlags = 0; 3421 } else { 3422 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3423 "Config is relaunching non-resumed " + r); 3424 relaunchActivityLocked(r, r.configChangeFlags, false); 3425 r.configChangeFlags = 0; 3426 } 3427 3428 // All done... tell the caller we weren't able to keep this 3429 // activity around. 3430 return false; 3431 } 3432 3433 // Default case: the activity can handle this new configuration, so 3434 // hand it over. Note that we don't need to give it the new 3435 // configuration, since we always send configuration changes to all 3436 // process when they happen so it can just use whatever configuration 3437 // it last got. 3438 if (r.app != null && r.app.thread != null) { 3439 try { 3440 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3441 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3442 } catch (RemoteException e) { 3443 // If process died, whatever. 3444 } 3445 } 3446 r.stopFreezingScreenLocked(false); 3447 3448 return true; 3449 } 3450 3451 private boolean relaunchActivityLocked(ActivityRecord r, 3452 int changes, boolean andResume) { 3453 List<ResultInfo> results = null; 3454 List<Intent> newIntents = null; 3455 if (andResume) { 3456 results = r.results; 3457 newIntents = r.newIntents; 3458 } 3459 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3460 + " with results=" + results + " newIntents=" + newIntents 3461 + " andResume=" + andResume); 3462 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3463 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3464 r.task.taskId, r.shortComponentName); 3465 3466 r.startFreezingScreenLocked(r.app, 0); 3467 3468 mStackSupervisor.removeChildActivityContainers(r); 3469 3470 try { 3471 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3472 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3473 + r); 3474 r.forceNewConfig = false; 3475 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3476 changes, !andResume, new Configuration(mService.mConfiguration)); 3477 // Note: don't need to call pauseIfSleepingLocked() here, because 3478 // the caller will only pass in 'andResume' if this activity is 3479 // currently resumed, which implies we aren't sleeping. 3480 } catch (RemoteException e) { 3481 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3482 } 3483 3484 if (andResume) { 3485 r.results = null; 3486 r.newIntents = null; 3487 r.state = ActivityState.RESUMED; 3488 } else { 3489 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3490 r.state = ActivityState.PAUSED; 3491 } 3492 3493 return true; 3494 } 3495 3496 boolean willActivityBeVisibleLocked(IBinder token) { 3497 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3498 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3499 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3500 final ActivityRecord r = activities.get(activityNdx); 3501 if (r.appToken == token) { 3502 return true; 3503 } 3504 if (r.fullscreen && !r.finishing) { 3505 return false; 3506 } 3507 } 3508 } 3509 final ActivityRecord r = ActivityRecord.forToken(token); 3510 if (r == null) { 3511 return false; 3512 } 3513 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3514 + " would have returned true for r=" + r); 3515 return !r.finishing; 3516 } 3517 3518 void closeSystemDialogsLocked() { 3519 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3520 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3521 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3522 final ActivityRecord r = activities.get(activityNdx); 3523 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3524 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3525 } 3526 } 3527 } 3528 } 3529 3530 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3531 boolean didSomething = false; 3532 TaskRecord lastTask = null; 3533 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3534 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3535 int numActivities = activities.size(); 3536 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3537 ActivityRecord r = activities.get(activityNdx); 3538 final boolean samePackage = r.packageName.equals(name) 3539 || (name == null && r.userId == userId); 3540 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3541 && (samePackage || r.task == lastTask) 3542 && (r.app == null || evenPersistent || !r.app.persistent)) { 3543 if (!doit) { 3544 if (r.finishing) { 3545 // If this activity is just finishing, then it is not 3546 // interesting as far as something to stop. 3547 continue; 3548 } 3549 return true; 3550 } 3551 didSomething = true; 3552 Slog.i(TAG, " Force finishing activity " + r); 3553 if (samePackage) { 3554 if (r.app != null) { 3555 r.app.removed = true; 3556 } 3557 r.app = null; 3558 } 3559 lastTask = r.task; 3560 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3561 true)) { 3562 // r has been deleted from mActivities, accommodate. 3563 --numActivities; 3564 --activityNdx; 3565 } 3566 } 3567 } 3568 } 3569 return didSomething; 3570 } 3571 3572 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3573 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3574 final TaskRecord task = mTaskHistory.get(taskNdx); 3575 ActivityRecord r = null; 3576 ActivityRecord top = null; 3577 int numActivities = 0; 3578 int numRunning = 0; 3579 final ArrayList<ActivityRecord> activities = task.mActivities; 3580 if (activities.isEmpty()) { 3581 continue; 3582 } 3583 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3584 continue; 3585 } 3586 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3587 r = activities.get(activityNdx); 3588 3589 // Initialize state for next task if needed. 3590 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3591 top = r; 3592 numActivities = numRunning = 0; 3593 } 3594 3595 // Add 'r' into the current task. 3596 numActivities++; 3597 if (r.app != null && r.app.thread != null) { 3598 numRunning++; 3599 } 3600 3601 if (localLOGV) Slog.v( 3602 TAG, r.intent.getComponent().flattenToShortString() 3603 + ": task=" + r.task); 3604 } 3605 3606 RunningTaskInfo ci = new RunningTaskInfo(); 3607 ci.id = task.taskId; 3608 ci.baseActivity = r.intent.getComponent(); 3609 ci.topActivity = top.intent.getComponent(); 3610 ci.lastActiveTime = task.lastActiveTime; 3611 3612 if (top.thumbHolder != null) { 3613 ci.description = top.thumbHolder.lastDescription; 3614 } 3615 ci.numActivities = numActivities; 3616 ci.numRunning = numRunning; 3617 //System.out.println( 3618 // "#" + maxNum + ": " + " descr=" + ci.description); 3619 list.add(ci); 3620 } 3621 } 3622 3623 public void unhandledBackLocked() { 3624 final int top = mTaskHistory.size() - 1; 3625 if (DEBUG_SWITCH) Slog.d( 3626 TAG, "Performing unhandledBack(): top activity at " + top); 3627 if (top >= 0) { 3628 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3629 int activityTop = activities.size() - 1; 3630 if (activityTop > 0) { 3631 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3632 "unhandled-back", true); 3633 } 3634 } 3635 } 3636 3637 /** 3638 * Reset local parameters because an app's activity died. 3639 * @param app The app of the activity that died. 3640 * @return result from removeHistoryRecordsForAppLocked. 3641 */ 3642 boolean handleAppDiedLocked(ProcessRecord app) { 3643 if (mPausingActivity != null && mPausingActivity.app == app) { 3644 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3645 "App died while pausing: " + mPausingActivity); 3646 mPausingActivity = null; 3647 } 3648 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3649 mLastPausedActivity = null; 3650 mLastNoHistoryActivity = null; 3651 } 3652 3653 return removeHistoryRecordsForAppLocked(app); 3654 } 3655 3656 void handleAppCrashLocked(ProcessRecord app) { 3657 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3658 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3659 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3660 final ActivityRecord r = activities.get(activityNdx); 3661 if (r.app == app) { 3662 Slog.w(TAG, " Force finishing activity " 3663 + r.intent.getComponent().flattenToShortString()); 3664 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3665 } 3666 } 3667 } 3668 } 3669 3670 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3671 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3672 boolean printed = false; 3673 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3674 final TaskRecord task = mTaskHistory.get(taskNdx); 3675 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3676 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3677 dumpClient, dumpPackage, needSep, header, 3678 " Task id #" + task.taskId); 3679 if (printed) { 3680 header = null; 3681 } 3682 } 3683 return printed; 3684 } 3685 3686 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3687 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3688 3689 if ("all".equals(name)) { 3690 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3691 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3692 } 3693 } else if ("top".equals(name)) { 3694 final int top = mTaskHistory.size() - 1; 3695 if (top >= 0) { 3696 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3697 int listTop = list.size() - 1; 3698 if (listTop >= 0) { 3699 activities.add(list.get(listTop)); 3700 } 3701 } 3702 } else { 3703 ItemMatcher matcher = new ItemMatcher(); 3704 matcher.build(name); 3705 3706 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3707 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3708 if (matcher.match(r1, r1.intent.getComponent())) { 3709 activities.add(r1); 3710 } 3711 } 3712 } 3713 } 3714 3715 return activities; 3716 } 3717 3718 ActivityRecord restartPackage(String packageName) { 3719 ActivityRecord starting = topRunningActivityLocked(null); 3720 3721 // All activities that came from the package must be 3722 // restarted as if there was a config change. 3723 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3724 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3725 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3726 final ActivityRecord a = activities.get(activityNdx); 3727 if (a.info.packageName.equals(packageName)) { 3728 a.forceNewConfig = true; 3729 if (starting != null && a == starting && a.visible) { 3730 a.startFreezingScreenLocked(starting.app, 3731 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3732 } 3733 } 3734 } 3735 } 3736 3737 return starting; 3738 } 3739 3740 void removeTask(TaskRecord task) { 3741 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3742 mWindowManager.removeTask(task.taskId); 3743 final ActivityRecord r = mResumedActivity; 3744 if (r != null && r.task == task) { 3745 mResumedActivity = null; 3746 } 3747 3748 final int taskNdx = mTaskHistory.indexOf(task); 3749 final int topTaskNdx = mTaskHistory.size() - 1; 3750 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 3751 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 3752 if (!nextTask.isOverHomeStack()) { 3753 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3754 } 3755 } 3756 mTaskHistory.remove(task); 3757 updateTaskMovement(task, true); 3758 3759 if (task.mActivities.isEmpty()) { 3760 final boolean isVoiceSession = task.voiceSession != null; 3761 if (isVoiceSession) { 3762 try { 3763 task.voiceSession.taskFinished(task.intent, task.taskId); 3764 } catch (RemoteException e) { 3765 } 3766 } 3767 if (task.autoRemoveFromRecents() || isVoiceSession) { 3768 // Task creator asked to remove this when done, or this task was a voice 3769 // interaction, so it should not remain on the recent tasks list. 3770 mService.mRecentTasks.remove(task); 3771 } 3772 } 3773 3774 if (mTaskHistory.isEmpty()) { 3775 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3776 if (isOnHomeDisplay()) { 3777 mStackSupervisor.moveHomeStack(!isHomeStack()); 3778 } 3779 if (mStacks != null) { 3780 mStacks.remove(this); 3781 mStacks.add(0, this); 3782 } 3783 } 3784 } 3785 3786 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3787 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3788 boolean toTop) { 3789 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3790 voiceInteractor); 3791 addTask(task, toTop, false); 3792 return task; 3793 } 3794 3795 ArrayList<TaskRecord> getAllTasks() { 3796 return new ArrayList<TaskRecord>(mTaskHistory); 3797 } 3798 3799 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3800 task.stack = this; 3801 if (toTop) { 3802 insertTaskAtTop(task); 3803 } else { 3804 mTaskHistory.add(0, task); 3805 updateTaskMovement(task, false); 3806 } 3807 if (!moving && task.voiceSession != null) { 3808 try { 3809 task.voiceSession.taskStarted(task.intent, task.taskId); 3810 } catch (RemoteException e) { 3811 } 3812 } 3813 } 3814 3815 public int getStackId() { 3816 return mStackId; 3817 } 3818 3819 @Override 3820 public String toString() { 3821 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3822 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3823 } 3824} 3825