ActivityManager.java revision 10abe2fe297ce1ec60c15a3bd947757aee5b14b3
1/* 2 * Copyright (C) 2007 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 android.app; 18 19import android.Manifest; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.RequiresPermission; 24import android.annotation.SystemApi; 25import android.annotation.TestApi; 26import android.content.pm.ActivityInfo; 27import android.content.res.Configuration; 28import android.graphics.Canvas; 29import android.graphics.GraphicBuffer; 30import android.graphics.Matrix; 31import android.graphics.Point; 32import android.os.BatteryStats; 33import android.os.IBinder; 34import android.os.ParcelFileDescriptor; 35 36import com.android.internal.app.procstats.ProcessStats; 37import com.android.internal.os.RoSystemProperties; 38import com.android.internal.os.TransferPipe; 39import com.android.internal.util.FastPrintWriter; 40import com.android.server.LocalServices; 41 42import android.content.ComponentName; 43import android.content.Context; 44import android.content.Intent; 45import android.content.UriPermission; 46import android.content.pm.ApplicationInfo; 47import android.content.pm.ConfigurationInfo; 48import android.content.pm.IPackageDataObserver; 49import android.content.pm.PackageManager; 50import android.content.pm.ParceledListSlice; 51import android.content.pm.UserInfo; 52import android.content.res.Resources; 53import android.graphics.Bitmap; 54import android.graphics.Color; 55import android.graphics.Rect; 56import android.os.Bundle; 57import android.os.Debug; 58import android.os.Handler; 59import android.os.Parcel; 60import android.os.Parcelable; 61import android.os.Process; 62import android.os.RemoteException; 63import android.os.ServiceManager; 64import android.os.SystemProperties; 65import android.os.UserHandle; 66import android.text.TextUtils; 67import android.util.ArrayMap; 68import android.util.DisplayMetrics; 69import android.util.Singleton; 70import android.util.Size; 71 72import org.xmlpull.v1.XmlSerializer; 73 74import java.io.FileDescriptor; 75import java.io.FileOutputStream; 76import java.io.IOException; 77import java.io.PrintWriter; 78import java.lang.annotation.Retention; 79import java.lang.annotation.RetentionPolicy; 80import java.util.ArrayList; 81import java.util.List; 82 83/** 84 * <p> 85 * This class gives information about, and interacts 86 * with, activities, services, and the containing 87 * process. 88 * </p> 89 * 90 * <p> 91 * A number of the methods in this class are for 92 * debugging or informational purposes and they should 93 * not be used to affect any runtime behavior of 94 * your app. These methods are called out as such in 95 * the method level documentation. 96 * </p> 97 * 98 *<p> 99 * Most application developers should not have the need to 100 * use this class, most of whose methods are for specialized 101 * use cases. However, a few methods are more broadly applicable. 102 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 103 * enables your app to detect whether it is running on a low-memory device, 104 * and behave accordingly. 105 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 106 * is for apps with reset-data functionality. 107 * </p> 108 * 109 * <p> 110 * In some special use cases, where an app interacts with 111 * its Task stack, the app may use the 112 * {@link android.app.ActivityManager.AppTask} and 113 * {@link android.app.ActivityManager.RecentTaskInfo} inner 114 * classes. However, in general, the methods in this class should 115 * be used for testing and debugging purposes only. 116 * </p> 117 */ 118public class ActivityManager { 119 private static String TAG = "ActivityManager"; 120 121 private static int gMaxRecentTasks = -1; 122 123 private static final int NUM_ALLOWED_PIP_ACTIONS = 3; 124 125 private final Context mContext; 126 127 private static volatile boolean sSystemReady = false; 128 129 /** 130 * System property to enable task snapshots. 131 * @hide 132 */ 133 public final static boolean ENABLE_TASK_SNAPSHOTS; 134 135 static { 136 ENABLE_TASK_SNAPSHOTS = SystemProperties.getBoolean("persist.enable_task_snapshots", false); 137 } 138 139 static final class UidObserver extends IUidObserver.Stub { 140 final OnUidImportanceListener mListener; 141 142 UidObserver(OnUidImportanceListener listener) { 143 mListener = listener; 144 } 145 146 @Override 147 public void onUidStateChanged(int uid, int procState) { 148 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportance(procState)); 149 } 150 151 @Override 152 public void onUidGone(int uid, boolean disabled) { 153 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 154 } 155 156 @Override 157 public void onUidActive(int uid) { 158 } 159 160 @Override 161 public void onUidIdle(int uid, boolean disabled) { 162 } 163 } 164 165 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 166 167 /** 168 * Defines acceptable types of bugreports. 169 * @hide 170 */ 171 @Retention(RetentionPolicy.SOURCE) 172 @IntDef({ 173 BUGREPORT_OPTION_FULL, 174 BUGREPORT_OPTION_INTERACTIVE, 175 BUGREPORT_OPTION_REMOTE, 176 BUGREPORT_OPTION_WEAR, 177 BUGREPORT_OPTION_TELEPHONY 178 }) 179 public @interface BugreportMode {} 180 /** 181 * Takes a bugreport without user interference (and hence causing less 182 * interference to the system), but includes all sections. 183 * @hide 184 */ 185 public static final int BUGREPORT_OPTION_FULL = 0; 186 /** 187 * Allows user to monitor progress and enter additional data; might not include all 188 * sections. 189 * @hide 190 */ 191 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 192 /** 193 * Takes a bugreport requested remotely by administrator of the Device Owner app, 194 * not the device's user. 195 * @hide 196 */ 197 public static final int BUGREPORT_OPTION_REMOTE = 2; 198 /** 199 * Takes a bugreport on a wearable device. 200 * @hide 201 */ 202 public static final int BUGREPORT_OPTION_WEAR = 3; 203 204 /** 205 * Takes a lightweight version of bugreport that only includes a few, urgent sections 206 * used to report telephony bugs. 207 * @hide 208 */ 209 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 210 211 /** 212 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 213 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 214 * uninstalled in lieu of the declaring one. The package named here must be 215 * signed with the same certificate as the one declaring the {@code <meta-data>}. 216 */ 217 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 218 219 /** 220 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 221 * @hide 222 */ 223 public static final int START_VOICE_HIDDEN_SESSION = -10; 224 225 /** 226 * Result for IActivityManager.startVoiceActivity: active session does not match 227 * the requesting token. 228 * @hide 229 */ 230 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 231 232 /** 233 * Result for IActivityManager.startActivity: trying to start a background user 234 * activity that shouldn't be displayed for all users. 235 * @hide 236 */ 237 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 238 239 /** 240 * Result for IActivityManager.startActivity: trying to start an activity under voice 241 * control when that activity does not support the VOICE category. 242 * @hide 243 */ 244 public static final int START_NOT_VOICE_COMPATIBLE = -7; 245 246 /** 247 * Result for IActivityManager.startActivity: an error where the 248 * start had to be canceled. 249 * @hide 250 */ 251 public static final int START_CANCELED = -6; 252 253 /** 254 * Result for IActivityManager.startActivity: an error where the 255 * thing being started is not an activity. 256 * @hide 257 */ 258 public static final int START_NOT_ACTIVITY = -5; 259 260 /** 261 * Result for IActivityManager.startActivity: an error where the 262 * caller does not have permission to start the activity. 263 * @hide 264 */ 265 public static final int START_PERMISSION_DENIED = -4; 266 267 /** 268 * Result for IActivityManager.startActivity: an error where the 269 * caller has requested both to forward a result and to receive 270 * a result. 271 * @hide 272 */ 273 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 274 275 /** 276 * Result for IActivityManager.startActivity: an error where the 277 * requested class is not found. 278 * @hide 279 */ 280 public static final int START_CLASS_NOT_FOUND = -2; 281 282 /** 283 * Result for IActivityManager.startActivity: an error where the 284 * given Intent could not be resolved to an activity. 285 * @hide 286 */ 287 public static final int START_INTENT_NOT_RESOLVED = -1; 288 289 /** 290 * Result for IActivityManaqer.startActivity: the activity was started 291 * successfully as normal. 292 * @hide 293 */ 294 public static final int START_SUCCESS = 0; 295 296 /** 297 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 298 * be executed if it is the recipient, and that is indeed the case. 299 * @hide 300 */ 301 public static final int START_RETURN_INTENT_TO_CALLER = 1; 302 303 /** 304 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 305 * a task was simply brought to the foreground. 306 * @hide 307 */ 308 public static final int START_TASK_TO_FRONT = 2; 309 310 /** 311 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 312 * the given Intent was given to the existing top activity. 313 * @hide 314 */ 315 public static final int START_DELIVERED_TO_TOP = 3; 316 317 /** 318 * Result for IActivityManaqer.startActivity: request was canceled because 319 * app switches are temporarily canceled to ensure the user's last request 320 * (such as pressing home) is performed. 321 * @hide 322 */ 323 public static final int START_SWITCHES_CANCELED = 4; 324 325 /** 326 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 327 * while in Lock Task Mode. 328 * @hide 329 */ 330 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 331 332 /** 333 * Flag for IActivityManaqer.startActivity: do special start mode where 334 * a new activity is launched only if it is needed. 335 * @hide 336 */ 337 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 338 339 /** 340 * Flag for IActivityManaqer.startActivity: launch the app for 341 * debugging. 342 * @hide 343 */ 344 public static final int START_FLAG_DEBUG = 1<<1; 345 346 /** 347 * Flag for IActivityManaqer.startActivity: launch the app for 348 * allocation tracking. 349 * @hide 350 */ 351 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 352 353 /** 354 * Flag for IActivityManaqer.startActivity: launch the app with 355 * native debugging support. 356 * @hide 357 */ 358 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 359 360 /** 361 * Result for IActivityManaqer.broadcastIntent: success! 362 * @hide 363 */ 364 public static final int BROADCAST_SUCCESS = 0; 365 366 /** 367 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 368 * a sticky intent without appropriate permission. 369 * @hide 370 */ 371 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 372 373 /** 374 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 375 * to a stopped user. Fail. 376 * @hide 377 */ 378 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 379 380 /** 381 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 382 * for a sendBroadcast operation. 383 * @hide 384 */ 385 public static final int INTENT_SENDER_BROADCAST = 1; 386 387 /** 388 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 389 * for a startActivity operation. 390 * @hide 391 */ 392 public static final int INTENT_SENDER_ACTIVITY = 2; 393 394 /** 395 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 396 * for an activity result operation. 397 * @hide 398 */ 399 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 400 401 /** 402 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 403 * for a startService operation. 404 * @hide 405 */ 406 public static final int INTENT_SENDER_SERVICE = 4; 407 408 /** @hide User operation call: success! */ 409 public static final int USER_OP_SUCCESS = 0; 410 411 /** @hide User operation call: given user id is not known. */ 412 public static final int USER_OP_UNKNOWN_USER = -1; 413 414 /** @hide User operation call: given user id is the current user, can't be stopped. */ 415 public static final int USER_OP_IS_CURRENT = -2; 416 417 /** @hide User operation call: system user can't be stopped. */ 418 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 419 420 /** @hide User operation call: one of related users cannot be stopped. */ 421 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 422 423 /** @hide Not a real process state. */ 424 public static final int PROCESS_STATE_UNKNOWN = -1; 425 426 /** @hide Process is a persistent system process. */ 427 public static final int PROCESS_STATE_PERSISTENT = 0; 428 429 /** @hide Process is a persistent system process and is doing UI. */ 430 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 431 432 /** @hide Process is hosting the current top activities. Note that this covers 433 * all activities that are visible to the user. */ 434 public static final int PROCESS_STATE_TOP = 2; 435 436 /** @hide Process is hosting a foreground service due to a system binding. */ 437 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 438 439 /** @hide Process is hosting a foreground service. */ 440 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 441 442 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 443 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 444 445 /** @hide Process is important to the user, and something they are aware of. */ 446 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 447 448 /** @hide Process is important to the user, but not something they are aware of. */ 449 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 450 451 /** @hide Process is in the background running a backup/restore operation. */ 452 public static final int PROCESS_STATE_BACKUP = 8; 453 454 /** @hide Process is in the background, but it can't restore its state so we want 455 * to try to avoid killing it. */ 456 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 457 458 /** @hide Process is in the background running a service. Unlike oom_adj, this level 459 * is used for both the normal running in background state and the executing 460 * operations state. */ 461 public static final int PROCESS_STATE_SERVICE = 10; 462 463 /** @hide Process is in the background running a receiver. Note that from the 464 * perspective of oom_adj receivers run at a higher foreground level, but for our 465 * prioritization here that is not necessary and putting them below services means 466 * many fewer changes in some process states as they receive broadcasts. */ 467 public static final int PROCESS_STATE_RECEIVER = 11; 468 469 /** @hide Process is in the background but hosts the home activity. */ 470 public static final int PROCESS_STATE_HOME = 12; 471 472 /** @hide Process is in the background but hosts the last shown activity. */ 473 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 474 475 /** @hide Process is being cached for later use and contains activities. */ 476 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 477 478 /** @hide Process is being cached for later use and is a client of another cached 479 * process that contains activities. */ 480 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 481 482 /** @hide Process is being cached for later use and is empty. */ 483 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 484 485 /** @hide Process does not exist. */ 486 public static final int PROCESS_STATE_NONEXISTENT = 17; 487 488 /** @hide The lowest process state number */ 489 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 490 491 /** @hide The highest process state number */ 492 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 493 494 /** @hide Should this process state be considered a background state? */ 495 public static final boolean isProcStateBackground(int procState) { 496 return procState >= PROCESS_STATE_BACKUP; 497 } 498 499 /** @hide requestType for assist context: only basic information. */ 500 public static final int ASSIST_CONTEXT_BASIC = 0; 501 502 /** @hide requestType for assist context: generate full AssistStructure. */ 503 public static final int ASSIST_CONTEXT_FULL = 1; 504 505 /** @hide requestType for assist context: generate full AssistStructure for auto-fill. */ 506 public static final int ASSIST_CONTEXT_AUTO_FILL = 2; 507 508 /** @hide requestType for assist context: generate full AssistStructure for auto-fill save. */ 509 public static final int ASSIST_CONTEXT_AUTO_FILL_SAVE = 3; 510 511 /** @hide Flag for registerUidObserver: report changes in process state. */ 512 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 513 514 /** @hide Flag for registerUidObserver: report uid gone. */ 515 public static final int UID_OBSERVER_GONE = 1<<1; 516 517 /** @hide Flag for registerUidObserver: report uid has become idle. */ 518 public static final int UID_OBSERVER_IDLE = 1<<2; 519 520 /** @hide Flag for registerUidObserver: report uid has become active. */ 521 public static final int UID_OBSERVER_ACTIVE = 1<<3; 522 523 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 524 public static final int APP_START_MODE_NORMAL = 0; 525 526 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 527 public static final int APP_START_MODE_DELAYED = 1; 528 529 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 530 * launches. */ 531 public static final int APP_START_MODE_DISABLED = 2; 532 533 /** 534 * Lock task mode is not active. 535 */ 536 public static final int LOCK_TASK_MODE_NONE = 0; 537 538 /** 539 * Full lock task mode is active. 540 */ 541 public static final int LOCK_TASK_MODE_LOCKED = 1; 542 543 /** 544 * App pinning mode is active. 545 */ 546 public static final int LOCK_TASK_MODE_PINNED = 2; 547 548 Point mAppTaskThumbnailSize; 549 550 /*package*/ ActivityManager(Context context, Handler handler) { 551 mContext = context; 552 } 553 554 /** 555 * Screen compatibility mode: the application most always run in 556 * compatibility mode. 557 * @hide 558 */ 559 public static final int COMPAT_MODE_ALWAYS = -1; 560 561 /** 562 * Screen compatibility mode: the application can never run in 563 * compatibility mode. 564 * @hide 565 */ 566 public static final int COMPAT_MODE_NEVER = -2; 567 568 /** 569 * Screen compatibility mode: unknown. 570 * @hide 571 */ 572 public static final int COMPAT_MODE_UNKNOWN = -3; 573 574 /** 575 * Screen compatibility mode: the application currently has compatibility 576 * mode disabled. 577 * @hide 578 */ 579 public static final int COMPAT_MODE_DISABLED = 0; 580 581 /** 582 * Screen compatibility mode: the application currently has compatibility 583 * mode enabled. 584 * @hide 585 */ 586 public static final int COMPAT_MODE_ENABLED = 1; 587 588 /** 589 * Screen compatibility mode: request to toggle the application's 590 * compatibility mode. 591 * @hide 592 */ 593 public static final int COMPAT_MODE_TOGGLE = 2; 594 595 /** @hide */ 596 public static class StackId { 597 /** Invalid stack ID. */ 598 public static final int INVALID_STACK_ID = -1; 599 600 /** First static stack ID. */ 601 public static final int FIRST_STATIC_STACK_ID = 0; 602 603 /** Home activity stack ID. */ 604 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 605 606 /** ID of stack where fullscreen activities are normally launched into. */ 607 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 608 609 /** ID of stack where freeform/resized activities are normally launched into. */ 610 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 611 612 /** ID of stack that occupies a dedicated region of the screen. */ 613 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 614 615 /** ID of stack that always on top (always visible) when it exist. */ 616 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 617 618 /** Recents activity stack ID. */ 619 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 620 621 /** Last static stack stack ID. */ 622 public static final int LAST_STATIC_STACK_ID = RECENTS_STACK_ID; 623 624 /** Start of ID range used by stacks that are created dynamically. */ 625 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 626 627 public static boolean isStaticStack(int stackId) { 628 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 629 } 630 631 /** 632 * Returns true if the activities contained in the input stack display a shadow around 633 * their border. 634 */ 635 public static boolean hasWindowShadow(int stackId) { 636 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 637 } 638 639 /** 640 * Returns true if the activities contained in the input stack display a decor view. 641 */ 642 public static boolean hasWindowDecor(int stackId) { 643 return stackId == FREEFORM_WORKSPACE_STACK_ID; 644 } 645 646 /** 647 * Returns true if the tasks contained in the stack can be resized independently of the 648 * stack. 649 */ 650 public static boolean isTaskResizeAllowed(int stackId) { 651 return stackId == FREEFORM_WORKSPACE_STACK_ID; 652 } 653 654 /** Returns true if the task bounds should persist across power cycles. */ 655 public static boolean persistTaskBounds(int stackId) { 656 return stackId == FREEFORM_WORKSPACE_STACK_ID; 657 } 658 659 /** 660 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 661 */ 662 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 663 return stackId == PINNED_STACK_ID; 664 } 665 666 /** 667 * Returns true if we try to maintain focus in the current stack when the top activity 668 * finishes. 669 */ 670 public static boolean keepFocusInStackIfPossible(int stackId) { 671 return stackId == FREEFORM_WORKSPACE_STACK_ID 672 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 673 } 674 675 /** 676 * Returns true if Stack size is affected by the docked stack changing size. 677 */ 678 public static boolean isResizeableByDockedStack(int stackId) { 679 return isStaticStack(stackId) && 680 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 681 } 682 683 /** 684 * Returns true if the size of tasks in the input stack are affected by the docked stack 685 * changing size. 686 */ 687 public static boolean isTaskResizeableByDockedStack(int stackId) { 688 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 689 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 690 } 691 692 /** 693 * Returns true if the windows of tasks being moved to the target stack from the source 694 * stack should be replaced, meaning that window manager will keep the old window around 695 * until the new is ready. 696 */ 697 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 698 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 699 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 700 } 701 702 /** 703 * Return whether a stackId is a stack containing floating windows. Floating windows 704 * are laid out differently as they are allowed to extend past the display bounds 705 * without overscan insets. 706 */ 707 public static boolean tasksAreFloating(int stackId) { 708 return stackId == FREEFORM_WORKSPACE_STACK_ID 709 || stackId == PINNED_STACK_ID; 710 } 711 712 /** 713 * Returns true if animation specs should be constructed for app transition that moves 714 * the task to the specified stack. 715 */ 716 public static boolean useAnimationSpecForAppTransition(int stackId) { 717 718 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 719 // reboots. 720 return stackId == FREEFORM_WORKSPACE_STACK_ID 721 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 722 || stackId == INVALID_STACK_ID; 723 } 724 725 /** Returns true if the windows in the stack can receive input keys. */ 726 public static boolean canReceiveKeys(int stackId) { 727 return stackId != PINNED_STACK_ID; 728 } 729 730 /** 731 * Returns true if the stack can be visible above lockscreen. 732 */ 733 public static boolean isAllowedOverLockscreen(int stackId) { 734 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 735 } 736 737 public static boolean isAlwaysOnTop(int stackId) { 738 return stackId == PINNED_STACK_ID; 739 } 740 741 /** 742 * Returns true if the top task in the task is allowed to return home when finished and 743 * there are other tasks in the stack. 744 */ 745 public static boolean allowTopTaskToReturnHome(int stackId) { 746 return stackId != PINNED_STACK_ID; 747 } 748 749 /** 750 * Returns true if the stack should be resized to match the bounds specified by 751 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 752 */ 753 public static boolean resizeStackWithLaunchBounds(int stackId) { 754 return stackId == PINNED_STACK_ID; 755 } 756 757 /** 758 * Returns true if any visible windows belonging to apps in this stack should be kept on 759 * screen when the app is killed due to something like the low memory killer. 760 */ 761 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 762 return stackId != PINNED_STACK_ID; 763 } 764 765 /** 766 * Returns true if the backdrop on the client side should match the frame of the window. 767 * Returns false, if the backdrop should be fullscreen. 768 */ 769 public static boolean useWindowFrameForBackdrop(int stackId) { 770 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 771 } 772 773 /** 774 * Returns true if a window from the specified stack with {@param stackId} are normally 775 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 776 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 777 * etc. 778 */ 779 public static boolean normallyFullscreenWindows(int stackId) { 780 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 781 && stackId != DOCKED_STACK_ID; 782 } 783 784 /** 785 * Returns true if the input stack id should only be present on a device that supports 786 * multi-window mode. 787 * @see android.app.ActivityManager#supportsMultiWindow 788 */ 789 public static boolean isMultiWindowStack(int stackId) { 790 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 791 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 792 } 793 794 /** 795 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 796 */ 797 public static boolean isHomeOrRecentsStack(int stackId) { 798 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 799 } 800 801 /** 802 * Returns true if activities contained in this stack can request visible behind by 803 * calling {@link Activity#requestVisibleBehind}. 804 */ 805 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 806 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 807 } 808 809 /** 810 * Returns true if this stack may be scaled without resizing, 811 * and windows within may need to be configured as such. 812 */ 813 public static boolean windowsAreScaleable(int stackId) { 814 return stackId == PINNED_STACK_ID; 815 } 816 817 /** 818 * Returns true if windows in this stack should be given move animations 819 * by default. 820 */ 821 public static boolean hasMovementAnimations(int stackId) { 822 return stackId != PINNED_STACK_ID; 823 } 824 825 /** Returns true if the input stack and its content can affect the device orientation. */ 826 public static boolean canSpecifyOrientation(int stackId) { 827 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID 828 || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 829 } 830 } 831 832 /** 833 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 834 * specifies the position of the created docked stack at the top half of the screen if 835 * in portrait mode or at the left half of the screen if in landscape mode. 836 * @hide 837 */ 838 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 839 840 /** 841 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 842 * specifies the position of the created docked stack at the bottom half of the screen if 843 * in portrait mode or at the right half of the screen if in landscape mode. 844 * @hide 845 */ 846 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 847 848 /** 849 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 850 * that the resize doesn't need to preserve the window, and can be skipped if bounds 851 * is unchanged. This mode is used by window manager in most cases. 852 * @hide 853 */ 854 public static final int RESIZE_MODE_SYSTEM = 0; 855 856 /** 857 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 858 * that the resize should preserve the window if possible. 859 * @hide 860 */ 861 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 862 863 /** 864 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 865 * that the resize should be performed even if the bounds appears unchanged. 866 * @hide 867 */ 868 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 869 870 /** 871 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 872 * manager during a screen rotation. 873 * @hide 874 */ 875 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 876 877 /** 878 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 879 * resize is due to a drag action. 880 * @hide 881 */ 882 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 883 884 /** 885 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 886 * that the resize should preserve the window if possible, and should not be skipped 887 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 888 * is ending. 889 * @hide 890 */ 891 public static final int RESIZE_MODE_USER_FORCED = 892 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 893 894 /** @hide */ 895 public int getFrontActivityScreenCompatMode() { 896 try { 897 return getService().getFrontActivityScreenCompatMode(); 898 } catch (RemoteException e) { 899 throw e.rethrowFromSystemServer(); 900 } 901 } 902 903 /** @hide */ 904 public void setFrontActivityScreenCompatMode(int mode) { 905 try { 906 getService().setFrontActivityScreenCompatMode(mode); 907 } catch (RemoteException e) { 908 throw e.rethrowFromSystemServer(); 909 } 910 } 911 912 /** @hide */ 913 public int getPackageScreenCompatMode(String packageName) { 914 try { 915 return getService().getPackageScreenCompatMode(packageName); 916 } catch (RemoteException e) { 917 throw e.rethrowFromSystemServer(); 918 } 919 } 920 921 /** @hide */ 922 public void setPackageScreenCompatMode(String packageName, int mode) { 923 try { 924 getService().setPackageScreenCompatMode(packageName, mode); 925 } catch (RemoteException e) { 926 throw e.rethrowFromSystemServer(); 927 } 928 } 929 930 /** @hide */ 931 public boolean getPackageAskScreenCompat(String packageName) { 932 try { 933 return getService().getPackageAskScreenCompat(packageName); 934 } catch (RemoteException e) { 935 throw e.rethrowFromSystemServer(); 936 } 937 } 938 939 /** @hide */ 940 public void setPackageAskScreenCompat(String packageName, boolean ask) { 941 try { 942 getService().setPackageAskScreenCompat(packageName, ask); 943 } catch (RemoteException e) { 944 throw e.rethrowFromSystemServer(); 945 } 946 } 947 948 /** 949 * Return the approximate per-application memory class of the current 950 * device. This gives you an idea of how hard a memory limit you should 951 * impose on your application to let the overall system work best. The 952 * returned value is in megabytes; the baseline Android memory class is 953 * 16 (which happens to be the Java heap limit of those devices); some 954 * device with more memory may return 24 or even higher numbers. 955 */ 956 public int getMemoryClass() { 957 return staticGetMemoryClass(); 958 } 959 960 /** @hide */ 961 static public int staticGetMemoryClass() { 962 // Really brain dead right now -- just take this from the configured 963 // vm heap size, and assume it is in megabytes and thus ends with "m". 964 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 965 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 966 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 967 } 968 return staticGetLargeMemoryClass(); 969 } 970 971 /** 972 * Return the approximate per-application memory class of the current 973 * device when an application is running with a large heap. This is the 974 * space available for memory-intensive applications; most applications 975 * should not need this amount of memory, and should instead stay with the 976 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 977 * This may be the same size as {@link #getMemoryClass()} on memory 978 * constrained devices, or it may be significantly larger on devices with 979 * a large amount of available RAM. 980 * 981 * <p>The is the size of the application's Dalvik heap if it has 982 * specified <code>android:largeHeap="true"</code> in its manifest. 983 */ 984 public int getLargeMemoryClass() { 985 return staticGetLargeMemoryClass(); 986 } 987 988 /** @hide */ 989 static public int staticGetLargeMemoryClass() { 990 // Really brain dead right now -- just take this from the configured 991 // vm heap size, and assume it is in megabytes and thus ends with "m". 992 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 993 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 994 } 995 996 /** 997 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 998 * is ultimately up to the device configuration, but currently it generally means 999 * something in the class of a 512MB device with about a 800x480 or less screen. 1000 * This is mostly intended to be used by apps to determine whether they should turn 1001 * off certain features that require more RAM. 1002 */ 1003 public boolean isLowRamDevice() { 1004 return isLowRamDeviceStatic(); 1005 } 1006 1007 /** @hide */ 1008 public static boolean isLowRamDeviceStatic() { 1009 return RoSystemProperties.CONFIG_LOW_RAM; 1010 } 1011 1012 /** 1013 * Used by persistent processes to determine if they are running on a 1014 * higher-end device so should be okay using hardware drawing acceleration 1015 * (which tends to consume a lot more RAM). 1016 * @hide 1017 */ 1018 static public boolean isHighEndGfx() { 1019 return !isLowRamDeviceStatic() && 1020 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1021 } 1022 1023 /** 1024 * Return the maximum number of recents entries that we will maintain and show. 1025 * @hide 1026 */ 1027 static public int getMaxRecentTasksStatic() { 1028 if (gMaxRecentTasks < 0) { 1029 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1030 } 1031 return gMaxRecentTasks; 1032 } 1033 1034 /** 1035 * Return the default limit on the number of recents that an app can make. 1036 * @hide 1037 */ 1038 static public int getDefaultAppRecentsLimitStatic() { 1039 return getMaxRecentTasksStatic() / 6; 1040 } 1041 1042 /** 1043 * Return the maximum limit on the number of recents that an app can make. 1044 * @hide 1045 */ 1046 static public int getMaxAppRecentsLimitStatic() { 1047 return getMaxRecentTasksStatic() / 2; 1048 } 1049 1050 /** 1051 * Returns true if the system supports at least one form of multi-window. 1052 * E.g. freeform, split-screen, picture-in-picture. 1053 * @hide 1054 */ 1055 static public boolean supportsMultiWindow() { 1056 return !isLowRamDeviceStatic() 1057 && Resources.getSystem().getBoolean( 1058 com.android.internal.R.bool.config_supportsMultiWindow); 1059 } 1060 1061 /** 1062 * Returns true if the system supports split screen multi-window. 1063 * @hide 1064 */ 1065 static public boolean supportsSplitScreenMultiWindow() { 1066 return supportsMultiWindow() 1067 && Resources.getSystem().getBoolean( 1068 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1069 } 1070 1071 /** 1072 * Return the maximum number of actions that will be displayed in the picture-in-picture UI when 1073 * the user interacts with the activity currently in picture-in-picture mode. 1074 */ 1075 public static int getMaxNumPictureInPictureActions() { 1076 return NUM_ALLOWED_PIP_ACTIONS; 1077 } 1078 1079 /** 1080 * Information you can set and retrieve about the current activity within the recent task list. 1081 */ 1082 public static class TaskDescription implements Parcelable { 1083 /** @hide */ 1084 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1085 private static final String ATTR_TASKDESCRIPTIONLABEL = 1086 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1087 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1088 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1089 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1090 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1091 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1092 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1093 1094 private String mLabel; 1095 private Bitmap mIcon; 1096 private String mIconFilename; 1097 private int mColorPrimary; 1098 private int mColorBackground; 1099 1100 /** 1101 * Creates the TaskDescription to the specified values. 1102 * 1103 * @param label A label and description of the current state of this task. 1104 * @param icon An icon that represents the current state of this task. 1105 * @param colorPrimary A color to override the theme's primary color. This color must be 1106 * opaque. 1107 */ 1108 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1109 this(label, icon, null, colorPrimary, 0); 1110 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1111 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1112 } 1113 } 1114 1115 /** 1116 * Creates the TaskDescription to the specified values. 1117 * 1118 * @param label A label and description of the current state of this activity. 1119 * @param icon An icon that represents the current state of this activity. 1120 */ 1121 public TaskDescription(String label, Bitmap icon) { 1122 this(label, icon, null, 0, 0); 1123 } 1124 1125 /** 1126 * Creates the TaskDescription to the specified values. 1127 * 1128 * @param label A label and description of the current state of this activity. 1129 */ 1130 public TaskDescription(String label) { 1131 this(label, null, null, 0, 0); 1132 } 1133 1134 /** 1135 * Creates an empty TaskDescription. 1136 */ 1137 public TaskDescription() { 1138 this(null, null, null, 0, 0); 1139 } 1140 1141 /** @hide */ 1142 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1143 int colorBackground) { 1144 mLabel = label; 1145 mIcon = icon; 1146 mIconFilename = iconFilename; 1147 mColorPrimary = colorPrimary; 1148 mColorBackground = colorBackground; 1149 } 1150 1151 /** 1152 * Creates a copy of another TaskDescription. 1153 */ 1154 public TaskDescription(TaskDescription td) { 1155 copyFrom(td); 1156 } 1157 1158 /** 1159 * Copies this the values from another TaskDescription. 1160 * @hide 1161 */ 1162 public void copyFrom(TaskDescription other) { 1163 mLabel = other.mLabel; 1164 mIcon = other.mIcon; 1165 mIconFilename = other.mIconFilename; 1166 mColorPrimary = other.mColorPrimary; 1167 mColorBackground = other.mColorBackground; 1168 } 1169 1170 private TaskDescription(Parcel source) { 1171 readFromParcel(source); 1172 } 1173 1174 /** 1175 * Sets the label for this task description. 1176 * @hide 1177 */ 1178 public void setLabel(String label) { 1179 mLabel = label; 1180 } 1181 1182 /** 1183 * Sets the primary color for this task description. 1184 * @hide 1185 */ 1186 public void setPrimaryColor(int primaryColor) { 1187 // Ensure that the given color is valid 1188 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1189 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1190 } 1191 mColorPrimary = primaryColor; 1192 } 1193 1194 /** 1195 * Sets the background color for this task description. 1196 * @hide 1197 */ 1198 public void setBackgroundColor(int backgroundColor) { 1199 // Ensure that the given color is valid 1200 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1201 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1202 } 1203 mColorBackground = backgroundColor; 1204 } 1205 1206 /** 1207 * Sets the icon for this task description. 1208 * @hide 1209 */ 1210 public void setIcon(Bitmap icon) { 1211 mIcon = icon; 1212 } 1213 1214 /** 1215 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1216 * bitmap. 1217 * @hide 1218 */ 1219 public void setIconFilename(String iconFilename) { 1220 mIconFilename = iconFilename; 1221 mIcon = null; 1222 } 1223 1224 /** 1225 * @return The label and description of the current state of this task. 1226 */ 1227 public String getLabel() { 1228 return mLabel; 1229 } 1230 1231 /** 1232 * @return The icon that represents the current state of this task. 1233 */ 1234 public Bitmap getIcon() { 1235 if (mIcon != null) { 1236 return mIcon; 1237 } 1238 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1239 } 1240 1241 /** @hide */ 1242 public String getIconFilename() { 1243 return mIconFilename; 1244 } 1245 1246 /** @hide */ 1247 public Bitmap getInMemoryIcon() { 1248 return mIcon; 1249 } 1250 1251 /** @hide */ 1252 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1253 if (iconFilename != null) { 1254 try { 1255 return getService().getTaskDescriptionIcon(iconFilename, 1256 userId); 1257 } catch (RemoteException e) { 1258 throw e.rethrowFromSystemServer(); 1259 } 1260 } 1261 return null; 1262 } 1263 1264 /** 1265 * @return The color override on the theme's primary color. 1266 */ 1267 public int getPrimaryColor() { 1268 return mColorPrimary; 1269 } 1270 1271 /** 1272 * @return The background color. 1273 * @hide 1274 */ 1275 public int getBackgroundColor() { 1276 return mColorBackground; 1277 } 1278 1279 /** @hide */ 1280 public void saveToXml(XmlSerializer out) throws IOException { 1281 if (mLabel != null) { 1282 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1283 } 1284 if (mColorPrimary != 0) { 1285 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1286 Integer.toHexString(mColorPrimary)); 1287 } 1288 if (mColorBackground != 0) { 1289 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1290 Integer.toHexString(mColorBackground)); 1291 } 1292 if (mIconFilename != null) { 1293 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1294 } 1295 } 1296 1297 /** @hide */ 1298 public void restoreFromXml(String attrName, String attrValue) { 1299 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1300 setLabel(attrValue); 1301 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1302 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1303 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1304 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1305 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1306 setIconFilename(attrValue); 1307 } 1308 } 1309 1310 @Override 1311 public int describeContents() { 1312 return 0; 1313 } 1314 1315 @Override 1316 public void writeToParcel(Parcel dest, int flags) { 1317 if (mLabel == null) { 1318 dest.writeInt(0); 1319 } else { 1320 dest.writeInt(1); 1321 dest.writeString(mLabel); 1322 } 1323 if (mIcon == null) { 1324 dest.writeInt(0); 1325 } else { 1326 dest.writeInt(1); 1327 mIcon.writeToParcel(dest, 0); 1328 } 1329 dest.writeInt(mColorPrimary); 1330 dest.writeInt(mColorBackground); 1331 if (mIconFilename == null) { 1332 dest.writeInt(0); 1333 } else { 1334 dest.writeInt(1); 1335 dest.writeString(mIconFilename); 1336 } 1337 } 1338 1339 public void readFromParcel(Parcel source) { 1340 mLabel = source.readInt() > 0 ? source.readString() : null; 1341 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1342 mColorPrimary = source.readInt(); 1343 mColorBackground = source.readInt(); 1344 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1345 } 1346 1347 public static final Creator<TaskDescription> CREATOR 1348 = new Creator<TaskDescription>() { 1349 public TaskDescription createFromParcel(Parcel source) { 1350 return new TaskDescription(source); 1351 } 1352 public TaskDescription[] newArray(int size) { 1353 return new TaskDescription[size]; 1354 } 1355 }; 1356 1357 @Override 1358 public String toString() { 1359 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1360 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1361 " colorBackground: " + mColorBackground; 1362 } 1363 } 1364 1365 /** 1366 * Information you can retrieve about tasks that the user has most recently 1367 * started or visited. 1368 */ 1369 public static class RecentTaskInfo implements Parcelable { 1370 /** 1371 * If this task is currently running, this is the identifier for it. 1372 * If it is not running, this will be -1. 1373 */ 1374 public int id; 1375 1376 /** 1377 * The true identifier of this task, valid even if it is not running. 1378 */ 1379 public int persistentId; 1380 1381 /** 1382 * The original Intent used to launch the task. You can use this 1383 * Intent to re-launch the task (if it is no longer running) or bring 1384 * the current task to the front. 1385 */ 1386 public Intent baseIntent; 1387 1388 /** 1389 * If this task was started from an alias, this is the actual 1390 * activity component that was initially started; the component of 1391 * the baseIntent in this case is the name of the actual activity 1392 * implementation that the alias referred to. Otherwise, this is null. 1393 */ 1394 public ComponentName origActivity; 1395 1396 /** 1397 * The actual activity component that started the task. 1398 * @hide 1399 */ 1400 @Nullable 1401 public ComponentName realActivity; 1402 1403 /** 1404 * Description of the task's last state. 1405 */ 1406 public CharSequence description; 1407 1408 /** 1409 * The id of the ActivityStack this Task was on most recently. 1410 * @hide 1411 */ 1412 public int stackId; 1413 1414 /** 1415 * The id of the user the task was running as. 1416 * @hide 1417 */ 1418 public int userId; 1419 1420 /** 1421 * The first time this task was active. 1422 * @hide 1423 */ 1424 public long firstActiveTime; 1425 1426 /** 1427 * The last time this task was active. 1428 * @hide 1429 */ 1430 public long lastActiveTime; 1431 1432 /** 1433 * The recent activity values for the highest activity in the stack to have set the values. 1434 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1435 */ 1436 public TaskDescription taskDescription; 1437 1438 /** 1439 * Task affiliation for grouping with other tasks. 1440 */ 1441 public int affiliatedTaskId; 1442 1443 /** 1444 * Task affiliation color of the source task with the affiliated task id. 1445 * 1446 * @hide 1447 */ 1448 public int affiliatedTaskColor; 1449 1450 /** 1451 * The component launched as the first activity in the task. 1452 * This can be considered the "application" of this task. 1453 */ 1454 public ComponentName baseActivity; 1455 1456 /** 1457 * The activity component at the top of the history stack of the task. 1458 * This is what the user is currently doing. 1459 */ 1460 public ComponentName topActivity; 1461 1462 /** 1463 * Number of activities in this task. 1464 */ 1465 public int numActivities; 1466 1467 /** 1468 * The bounds of the task. 1469 * @hide 1470 */ 1471 public Rect bounds; 1472 1473 /** 1474 * True if the task can go in the docked stack. 1475 * @hide 1476 */ 1477 public boolean isDockable; 1478 1479 /** 1480 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1481 * @hide 1482 */ 1483 public int resizeMode; 1484 1485 public RecentTaskInfo() { 1486 } 1487 1488 @Override 1489 public int describeContents() { 1490 return 0; 1491 } 1492 1493 @Override 1494 public void writeToParcel(Parcel dest, int flags) { 1495 dest.writeInt(id); 1496 dest.writeInt(persistentId); 1497 if (baseIntent != null) { 1498 dest.writeInt(1); 1499 baseIntent.writeToParcel(dest, 0); 1500 } else { 1501 dest.writeInt(0); 1502 } 1503 ComponentName.writeToParcel(origActivity, dest); 1504 ComponentName.writeToParcel(realActivity, dest); 1505 TextUtils.writeToParcel(description, dest, 1506 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1507 if (taskDescription != null) { 1508 dest.writeInt(1); 1509 taskDescription.writeToParcel(dest, 0); 1510 } else { 1511 dest.writeInt(0); 1512 } 1513 dest.writeInt(stackId); 1514 dest.writeInt(userId); 1515 dest.writeLong(firstActiveTime); 1516 dest.writeLong(lastActiveTime); 1517 dest.writeInt(affiliatedTaskId); 1518 dest.writeInt(affiliatedTaskColor); 1519 ComponentName.writeToParcel(baseActivity, dest); 1520 ComponentName.writeToParcel(topActivity, dest); 1521 dest.writeInt(numActivities); 1522 if (bounds != null) { 1523 dest.writeInt(1); 1524 bounds.writeToParcel(dest, 0); 1525 } else { 1526 dest.writeInt(0); 1527 } 1528 dest.writeInt(isDockable ? 1 : 0); 1529 dest.writeInt(resizeMode); 1530 } 1531 1532 public void readFromParcel(Parcel source) { 1533 id = source.readInt(); 1534 persistentId = source.readInt(); 1535 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1536 origActivity = ComponentName.readFromParcel(source); 1537 realActivity = ComponentName.readFromParcel(source); 1538 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1539 taskDescription = source.readInt() > 0 ? 1540 TaskDescription.CREATOR.createFromParcel(source) : null; 1541 stackId = source.readInt(); 1542 userId = source.readInt(); 1543 firstActiveTime = source.readLong(); 1544 lastActiveTime = source.readLong(); 1545 affiliatedTaskId = source.readInt(); 1546 affiliatedTaskColor = source.readInt(); 1547 baseActivity = ComponentName.readFromParcel(source); 1548 topActivity = ComponentName.readFromParcel(source); 1549 numActivities = source.readInt(); 1550 bounds = source.readInt() > 0 ? 1551 Rect.CREATOR.createFromParcel(source) : null; 1552 isDockable = source.readInt() == 1; 1553 resizeMode = source.readInt(); 1554 } 1555 1556 public static final Creator<RecentTaskInfo> CREATOR 1557 = new Creator<RecentTaskInfo>() { 1558 public RecentTaskInfo createFromParcel(Parcel source) { 1559 return new RecentTaskInfo(source); 1560 } 1561 public RecentTaskInfo[] newArray(int size) { 1562 return new RecentTaskInfo[size]; 1563 } 1564 }; 1565 1566 private RecentTaskInfo(Parcel source) { 1567 readFromParcel(source); 1568 } 1569 } 1570 1571 /** 1572 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1573 * that have set their 1574 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1575 */ 1576 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1577 1578 /** 1579 * Provides a list that does not contain any 1580 * recent tasks that currently are not available to the user. 1581 */ 1582 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1583 1584 /** 1585 * Provides a list that contains recent tasks for all 1586 * profiles of a user. 1587 * @hide 1588 */ 1589 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1590 1591 /** 1592 * Ignores all tasks that are on the home stack. 1593 * @hide 1594 */ 1595 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1596 1597 /** 1598 * Ignores the top task in the docked stack. 1599 * @hide 1600 */ 1601 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1602 1603 /** 1604 * Ignores all tasks that are on the pinned stack. 1605 * @hide 1606 */ 1607 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1608 1609 /** 1610 * <p></p>Return a list of the tasks that the user has recently launched, with 1611 * the most recent being first and older ones after in order. 1612 * 1613 * <p><b>Note: this method is only intended for debugging and presenting 1614 * task management user interfaces</b>. This should never be used for 1615 * core logic in an application, such as deciding between different 1616 * behaviors based on the information found here. Such uses are 1617 * <em>not</em> supported, and will likely break in the future. For 1618 * example, if multiple applications can be actively running at the 1619 * same time, assumptions made about the meaning of the data here for 1620 * purposes of control flow will be incorrect.</p> 1621 * 1622 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1623 * no longer available to third party applications: the introduction of 1624 * document-centric recents means 1625 * it can leak personal information to the caller. For backwards compatibility, 1626 * it will still return a small subset of its data: at least the caller's 1627 * own tasks (though see {@link #getAppTasks()} for the correct supported 1628 * way to retrieve that information), and possibly some other tasks 1629 * such as home that are known to not be sensitive. 1630 * 1631 * @param maxNum The maximum number of entries to return in the list. The 1632 * actual number returned may be smaller, depending on how many tasks the 1633 * user has started and the maximum number the system can remember. 1634 * @param flags Information about what to return. May be any combination 1635 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1636 * 1637 * @return Returns a list of RecentTaskInfo records describing each of 1638 * the recent tasks. 1639 */ 1640 @Deprecated 1641 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1642 throws SecurityException { 1643 try { 1644 return getService().getRecentTasks(maxNum, 1645 flags, UserHandle.myUserId()).getList(); 1646 } catch (RemoteException e) { 1647 throw e.rethrowFromSystemServer(); 1648 } 1649 } 1650 1651 /** 1652 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1653 * specific user. It requires holding 1654 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1655 * @param maxNum The maximum number of entries to return in the list. The 1656 * actual number returned may be smaller, depending on how many tasks the 1657 * user has started and the maximum number the system can remember. 1658 * @param flags Information about what to return. May be any combination 1659 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1660 * 1661 * @return Returns a list of RecentTaskInfo records describing each of 1662 * the recent tasks. Most recently activated tasks go first. 1663 * 1664 * @hide 1665 */ 1666 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1667 throws SecurityException { 1668 try { 1669 return getService().getRecentTasks(maxNum, 1670 flags, userId).getList(); 1671 } catch (RemoteException e) { 1672 throw e.rethrowFromSystemServer(); 1673 } 1674 } 1675 1676 /** 1677 * Information you can retrieve about a particular task that is currently 1678 * "running" in the system. Note that a running task does not mean the 1679 * given task actually has a process it is actively running in; it simply 1680 * means that the user has gone to it and never closed it, but currently 1681 * the system may have killed its process and is only holding on to its 1682 * last state in order to restart it when the user returns. 1683 */ 1684 public static class RunningTaskInfo implements Parcelable { 1685 /** 1686 * A unique identifier for this task. 1687 */ 1688 public int id; 1689 1690 /** 1691 * The stack that currently contains this task. 1692 * @hide 1693 */ 1694 public int stackId; 1695 1696 /** 1697 * The component launched as the first activity in the task. This can 1698 * be considered the "application" of this task. 1699 */ 1700 public ComponentName baseActivity; 1701 1702 /** 1703 * The activity component at the top of the history stack of the task. 1704 * This is what the user is currently doing. 1705 */ 1706 public ComponentName topActivity; 1707 1708 /** 1709 * Thumbnail representation of the task's current state. Currently 1710 * always null. 1711 */ 1712 public Bitmap thumbnail; 1713 1714 /** 1715 * Description of the task's current state. 1716 */ 1717 public CharSequence description; 1718 1719 /** 1720 * Number of activities in this task. 1721 */ 1722 public int numActivities; 1723 1724 /** 1725 * Number of activities that are currently running (not stopped 1726 * and persisted) in this task. 1727 */ 1728 public int numRunning; 1729 1730 /** 1731 * Last time task was run. For sorting. 1732 * @hide 1733 */ 1734 public long lastActiveTime; 1735 1736 /** 1737 * True if the task can go in the docked stack. 1738 * @hide 1739 */ 1740 public boolean isDockable; 1741 1742 /** 1743 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1744 * @hide 1745 */ 1746 public int resizeMode; 1747 1748 public RunningTaskInfo() { 1749 } 1750 1751 public int describeContents() { 1752 return 0; 1753 } 1754 1755 public void writeToParcel(Parcel dest, int flags) { 1756 dest.writeInt(id); 1757 dest.writeInt(stackId); 1758 ComponentName.writeToParcel(baseActivity, dest); 1759 ComponentName.writeToParcel(topActivity, dest); 1760 if (thumbnail != null) { 1761 dest.writeInt(1); 1762 thumbnail.writeToParcel(dest, 0); 1763 } else { 1764 dest.writeInt(0); 1765 } 1766 TextUtils.writeToParcel(description, dest, 1767 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1768 dest.writeInt(numActivities); 1769 dest.writeInt(numRunning); 1770 dest.writeInt(isDockable ? 1 : 0); 1771 dest.writeInt(resizeMode); 1772 } 1773 1774 public void readFromParcel(Parcel source) { 1775 id = source.readInt(); 1776 stackId = source.readInt(); 1777 baseActivity = ComponentName.readFromParcel(source); 1778 topActivity = ComponentName.readFromParcel(source); 1779 if (source.readInt() != 0) { 1780 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1781 } else { 1782 thumbnail = null; 1783 } 1784 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1785 numActivities = source.readInt(); 1786 numRunning = source.readInt(); 1787 isDockable = source.readInt() != 0; 1788 resizeMode = source.readInt(); 1789 } 1790 1791 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1792 public RunningTaskInfo createFromParcel(Parcel source) { 1793 return new RunningTaskInfo(source); 1794 } 1795 public RunningTaskInfo[] newArray(int size) { 1796 return new RunningTaskInfo[size]; 1797 } 1798 }; 1799 1800 private RunningTaskInfo(Parcel source) { 1801 readFromParcel(source); 1802 } 1803 } 1804 1805 /** 1806 * Get the list of tasks associated with the calling application. 1807 * 1808 * @return The list of tasks associated with the application making this call. 1809 * @throws SecurityException 1810 */ 1811 public List<ActivityManager.AppTask> getAppTasks() { 1812 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1813 List<IBinder> appTasks; 1814 try { 1815 appTasks = getService().getAppTasks(mContext.getPackageName()); 1816 } catch (RemoteException e) { 1817 throw e.rethrowFromSystemServer(); 1818 } 1819 int numAppTasks = appTasks.size(); 1820 for (int i = 0; i < numAppTasks; i++) { 1821 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1822 } 1823 return tasks; 1824 } 1825 1826 /** 1827 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1828 * with {@link #addAppTask}. 1829 */ 1830 public Size getAppTaskThumbnailSize() { 1831 synchronized (this) { 1832 ensureAppTaskThumbnailSizeLocked(); 1833 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1834 } 1835 } 1836 1837 private void ensureAppTaskThumbnailSizeLocked() { 1838 if (mAppTaskThumbnailSize == null) { 1839 try { 1840 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1841 } catch (RemoteException e) { 1842 throw e.rethrowFromSystemServer(); 1843 } 1844 } 1845 } 1846 1847 /** 1848 * Add a new {@link AppTask} for the calling application. This will create a new 1849 * recents entry that is added to the <b>end</b> of all existing recents. 1850 * 1851 * @param activity The activity that is adding the entry. This is used to help determine 1852 * the context that the new recents entry will be in. 1853 * @param intent The Intent that describes the recents entry. This is the same Intent that 1854 * you would have used to launch the activity for it. In generally you will want to set 1855 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1856 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1857 * entry will exist without an activity, so it doesn't make sense to not retain it when 1858 * its activity disappears. The given Intent here also must have an explicit ComponentName 1859 * set on it. 1860 * @param description Optional additional description information. 1861 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1862 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1863 * recreated in your process, probably in a way you don't like, before the recents entry 1864 * is added. 1865 * 1866 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1867 * most likely cause of failure is that there is no more room for more tasks for your app. 1868 */ 1869 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1870 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1871 Point size; 1872 synchronized (this) { 1873 ensureAppTaskThumbnailSizeLocked(); 1874 size = mAppTaskThumbnailSize; 1875 } 1876 final int tw = thumbnail.getWidth(); 1877 final int th = thumbnail.getHeight(); 1878 if (tw != size.x || th != size.y) { 1879 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1880 1881 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1882 float scale; 1883 float dx = 0, dy = 0; 1884 if (tw * size.x > size.y * th) { 1885 scale = (float) size.x / (float) th; 1886 dx = (size.y - tw * scale) * 0.5f; 1887 } else { 1888 scale = (float) size.y / (float) tw; 1889 dy = (size.x - th * scale) * 0.5f; 1890 } 1891 Matrix matrix = new Matrix(); 1892 matrix.setScale(scale, scale); 1893 matrix.postTranslate((int) (dx + 0.5f), 0); 1894 1895 Canvas canvas = new Canvas(bm); 1896 canvas.drawBitmap(thumbnail, matrix, null); 1897 canvas.setBitmap(null); 1898 1899 thumbnail = bm; 1900 } 1901 if (description == null) { 1902 description = new TaskDescription(); 1903 } 1904 try { 1905 return getService().addAppTask(activity.getActivityToken(), 1906 intent, description, thumbnail); 1907 } catch (RemoteException e) { 1908 throw e.rethrowFromSystemServer(); 1909 } 1910 } 1911 1912 /** 1913 * Return a list of the tasks that are currently running, with 1914 * the most recent being first and older ones after in order. Note that 1915 * "running" does not mean any of the task's code is currently loaded or 1916 * activity -- the task may have been frozen by the system, so that it 1917 * can be restarted in its previous state when next brought to the 1918 * foreground. 1919 * 1920 * <p><b>Note: this method is only intended for debugging and presenting 1921 * task management user interfaces</b>. This should never be used for 1922 * core logic in an application, such as deciding between different 1923 * behaviors based on the information found here. Such uses are 1924 * <em>not</em> supported, and will likely break in the future. For 1925 * example, if multiple applications can be actively running at the 1926 * same time, assumptions made about the meaning of the data here for 1927 * purposes of control flow will be incorrect.</p> 1928 * 1929 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1930 * is no longer available to third party 1931 * applications: the introduction of document-centric recents means 1932 * it can leak person information to the caller. For backwards compatibility, 1933 * it will still retu rn a small subset of its data: at least the caller's 1934 * own tasks, and possibly some other tasks 1935 * such as home that are known to not be sensitive. 1936 * 1937 * @param maxNum The maximum number of entries to return in the list. The 1938 * actual number returned may be smaller, depending on how many tasks the 1939 * user has started. 1940 * 1941 * @return Returns a list of RunningTaskInfo records describing each of 1942 * the running tasks. 1943 */ 1944 @Deprecated 1945 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1946 throws SecurityException { 1947 try { 1948 return getService().getTasks(maxNum, 0); 1949 } catch (RemoteException e) { 1950 throw e.rethrowFromSystemServer(); 1951 } 1952 } 1953 1954 /** 1955 * Completely remove the given task. 1956 * 1957 * @param taskId Identifier of the task to be removed. 1958 * @return Returns true if the given task was found and removed. 1959 * 1960 * @hide 1961 */ 1962 public boolean removeTask(int taskId) throws SecurityException { 1963 try { 1964 return getService().removeTask(taskId); 1965 } catch (RemoteException e) { 1966 throw e.rethrowFromSystemServer(); 1967 } 1968 } 1969 1970 /** 1971 * Metadata related to the {@link TaskThumbnail}. 1972 * 1973 * @hide 1974 */ 1975 public static class TaskThumbnailInfo implements Parcelable { 1976 /** @hide */ 1977 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1978 private static final String ATTR_TASK_WIDTH = 1979 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1980 private static final String ATTR_TASK_HEIGHT = 1981 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1982 private static final String ATTR_SCREEN_ORIENTATION = 1983 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1984 1985 public int taskWidth; 1986 public int taskHeight; 1987 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1988 1989 public TaskThumbnailInfo() { 1990 // Do nothing 1991 } 1992 1993 private TaskThumbnailInfo(Parcel source) { 1994 readFromParcel(source); 1995 } 1996 1997 /** 1998 * Resets this info state to the initial state. 1999 * @hide 2000 */ 2001 public void reset() { 2002 taskWidth = 0; 2003 taskHeight = 0; 2004 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2005 } 2006 2007 /** 2008 * Copies from another ThumbnailInfo. 2009 */ 2010 public void copyFrom(TaskThumbnailInfo o) { 2011 taskWidth = o.taskWidth; 2012 taskHeight = o.taskHeight; 2013 screenOrientation = o.screenOrientation; 2014 } 2015 2016 /** @hide */ 2017 public void saveToXml(XmlSerializer out) throws IOException { 2018 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2019 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2020 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2021 } 2022 2023 /** @hide */ 2024 public void restoreFromXml(String attrName, String attrValue) { 2025 if (ATTR_TASK_WIDTH.equals(attrName)) { 2026 taskWidth = Integer.parseInt(attrValue); 2027 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2028 taskHeight = Integer.parseInt(attrValue); 2029 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2030 screenOrientation = Integer.parseInt(attrValue); 2031 } 2032 } 2033 2034 public int describeContents() { 2035 return 0; 2036 } 2037 2038 public void writeToParcel(Parcel dest, int flags) { 2039 dest.writeInt(taskWidth); 2040 dest.writeInt(taskHeight); 2041 dest.writeInt(screenOrientation); 2042 } 2043 2044 public void readFromParcel(Parcel source) { 2045 taskWidth = source.readInt(); 2046 taskHeight = source.readInt(); 2047 screenOrientation = source.readInt(); 2048 } 2049 2050 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2051 public TaskThumbnailInfo createFromParcel(Parcel source) { 2052 return new TaskThumbnailInfo(source); 2053 } 2054 public TaskThumbnailInfo[] newArray(int size) { 2055 return new TaskThumbnailInfo[size]; 2056 } 2057 }; 2058 } 2059 2060 /** @hide */ 2061 public static class TaskThumbnail implements Parcelable { 2062 public Bitmap mainThumbnail; 2063 public ParcelFileDescriptor thumbnailFileDescriptor; 2064 public TaskThumbnailInfo thumbnailInfo; 2065 2066 public TaskThumbnail() { 2067 } 2068 2069 private TaskThumbnail(Parcel source) { 2070 readFromParcel(source); 2071 } 2072 2073 public int describeContents() { 2074 if (thumbnailFileDescriptor != null) { 2075 return thumbnailFileDescriptor.describeContents(); 2076 } 2077 return 0; 2078 } 2079 2080 public void writeToParcel(Parcel dest, int flags) { 2081 if (mainThumbnail != null) { 2082 dest.writeInt(1); 2083 mainThumbnail.writeToParcel(dest, flags); 2084 } else { 2085 dest.writeInt(0); 2086 } 2087 if (thumbnailFileDescriptor != null) { 2088 dest.writeInt(1); 2089 thumbnailFileDescriptor.writeToParcel(dest, flags); 2090 } else { 2091 dest.writeInt(0); 2092 } 2093 if (thumbnailInfo != null) { 2094 dest.writeInt(1); 2095 thumbnailInfo.writeToParcel(dest, flags); 2096 } else { 2097 dest.writeInt(0); 2098 } 2099 } 2100 2101 public void readFromParcel(Parcel source) { 2102 if (source.readInt() != 0) { 2103 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2104 } else { 2105 mainThumbnail = null; 2106 } 2107 if (source.readInt() != 0) { 2108 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2109 } else { 2110 thumbnailFileDescriptor = null; 2111 } 2112 if (source.readInt() != 0) { 2113 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2114 } else { 2115 thumbnailInfo = null; 2116 } 2117 } 2118 2119 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2120 public TaskThumbnail createFromParcel(Parcel source) { 2121 return new TaskThumbnail(source); 2122 } 2123 public TaskThumbnail[] newArray(int size) { 2124 return new TaskThumbnail[size]; 2125 } 2126 }; 2127 } 2128 2129 /** 2130 * Represents a task snapshot. 2131 * @hide 2132 */ 2133 public static class TaskSnapshot implements Parcelable { 2134 2135 private final GraphicBuffer mSnapshot; 2136 private final int mOrientation; 2137 private final Rect mContentInsets; 2138 2139 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets) { 2140 mSnapshot = snapshot; 2141 mOrientation = orientation; 2142 mContentInsets = new Rect(contentInsets); 2143 } 2144 2145 private TaskSnapshot(Parcel source) { 2146 mSnapshot = source.readParcelable(null /* classLoader */); 2147 mOrientation = source.readInt(); 2148 mContentInsets = source.readParcelable(null /* classLoader */); 2149 } 2150 2151 public GraphicBuffer getSnapshot() { 2152 return mSnapshot; 2153 } 2154 2155 public int getOrientation() { 2156 return mOrientation; 2157 } 2158 2159 public Rect getContentInsets() { 2160 return mContentInsets; 2161 } 2162 2163 @Override 2164 public int describeContents() { 2165 return 0; 2166 } 2167 2168 @Override 2169 public void writeToParcel(Parcel dest, int flags) { 2170 dest.writeParcelable(mSnapshot, 0); 2171 dest.writeInt(mOrientation); 2172 dest.writeParcelable(mContentInsets, 0); 2173 } 2174 2175 @Override 2176 public String toString() { 2177 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2178 + " mContentInsets=" + mContentInsets.toShortString(); 2179 } 2180 2181 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2182 public TaskSnapshot createFromParcel(Parcel source) { 2183 return new TaskSnapshot(source); 2184 } 2185 public TaskSnapshot[] newArray(int size) { 2186 return new TaskSnapshot[size]; 2187 } 2188 }; 2189 } 2190 2191 /** @hide */ 2192 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2193 try { 2194 return getService().getTaskThumbnail(id); 2195 } catch (RemoteException e) { 2196 throw e.rethrowFromSystemServer(); 2197 } 2198 } 2199 2200 /** 2201 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2202 * activity along with the task, so it is positioned immediately behind 2203 * the task. 2204 */ 2205 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2206 2207 /** 2208 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2209 * user-instigated action, so the current activity will not receive a 2210 * hint that the user is leaving. 2211 */ 2212 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2213 2214 /** 2215 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2216 * with a null options argument. 2217 * 2218 * @param taskId The identifier of the task to be moved, as found in 2219 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2220 * @param flags Additional operational flags, 0 or more of 2221 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2222 */ 2223 public void moveTaskToFront(int taskId, int flags) { 2224 moveTaskToFront(taskId, flags, null); 2225 } 2226 2227 /** 2228 * Ask that the task associated with a given task ID be moved to the 2229 * front of the stack, so it is now visible to the user. Requires that 2230 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2231 * or a SecurityException will be thrown. 2232 * 2233 * @param taskId The identifier of the task to be moved, as found in 2234 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2235 * @param flags Additional operational flags, 0 or more of 2236 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2237 * @param options Additional options for the operation, either null or 2238 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2239 * Context.startActivity(Intent, Bundle)}. 2240 */ 2241 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2242 try { 2243 getService().moveTaskToFront(taskId, flags, options); 2244 } catch (RemoteException e) { 2245 throw e.rethrowFromSystemServer(); 2246 } 2247 } 2248 2249 /** 2250 * Information you can retrieve about a particular Service that is 2251 * currently running in the system. 2252 */ 2253 public static class RunningServiceInfo implements Parcelable { 2254 /** 2255 * The service component. 2256 */ 2257 public ComponentName service; 2258 2259 /** 2260 * If non-zero, this is the process the service is running in. 2261 */ 2262 public int pid; 2263 2264 /** 2265 * The UID that owns this service. 2266 */ 2267 public int uid; 2268 2269 /** 2270 * The name of the process this service runs in. 2271 */ 2272 public String process; 2273 2274 /** 2275 * Set to true if the service has asked to run as a foreground process. 2276 */ 2277 public boolean foreground; 2278 2279 /** 2280 * The time when the service was first made active, either by someone 2281 * starting or binding to it. This 2282 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2283 */ 2284 public long activeSince; 2285 2286 /** 2287 * Set to true if this service has been explicitly started. 2288 */ 2289 public boolean started; 2290 2291 /** 2292 * Number of clients connected to the service. 2293 */ 2294 public int clientCount; 2295 2296 /** 2297 * Number of times the service's process has crashed while the service 2298 * is running. 2299 */ 2300 public int crashCount; 2301 2302 /** 2303 * The time when there was last activity in the service (either 2304 * explicit requests to start it or clients binding to it). This 2305 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2306 */ 2307 public long lastActivityTime; 2308 2309 /** 2310 * If non-zero, this service is not currently running, but scheduled to 2311 * restart at the given time. 2312 */ 2313 public long restarting; 2314 2315 /** 2316 * Bit for {@link #flags}: set if this service has been 2317 * explicitly started. 2318 */ 2319 public static final int FLAG_STARTED = 1<<0; 2320 2321 /** 2322 * Bit for {@link #flags}: set if the service has asked to 2323 * run as a foreground process. 2324 */ 2325 public static final int FLAG_FOREGROUND = 1<<1; 2326 2327 /** 2328 * Bit for {@link #flags): set if the service is running in a 2329 * core system process. 2330 */ 2331 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2332 2333 /** 2334 * Bit for {@link #flags): set if the service is running in a 2335 * persistent process. 2336 */ 2337 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2338 2339 /** 2340 * Running flags. 2341 */ 2342 public int flags; 2343 2344 /** 2345 * For special services that are bound to by system code, this is 2346 * the package that holds the binding. 2347 */ 2348 public String clientPackage; 2349 2350 /** 2351 * For special services that are bound to by system code, this is 2352 * a string resource providing a user-visible label for who the 2353 * client is. 2354 */ 2355 public int clientLabel; 2356 2357 public RunningServiceInfo() { 2358 } 2359 2360 public int describeContents() { 2361 return 0; 2362 } 2363 2364 public void writeToParcel(Parcel dest, int flags) { 2365 ComponentName.writeToParcel(service, dest); 2366 dest.writeInt(pid); 2367 dest.writeInt(uid); 2368 dest.writeString(process); 2369 dest.writeInt(foreground ? 1 : 0); 2370 dest.writeLong(activeSince); 2371 dest.writeInt(started ? 1 : 0); 2372 dest.writeInt(clientCount); 2373 dest.writeInt(crashCount); 2374 dest.writeLong(lastActivityTime); 2375 dest.writeLong(restarting); 2376 dest.writeInt(this.flags); 2377 dest.writeString(clientPackage); 2378 dest.writeInt(clientLabel); 2379 } 2380 2381 public void readFromParcel(Parcel source) { 2382 service = ComponentName.readFromParcel(source); 2383 pid = source.readInt(); 2384 uid = source.readInt(); 2385 process = source.readString(); 2386 foreground = source.readInt() != 0; 2387 activeSince = source.readLong(); 2388 started = source.readInt() != 0; 2389 clientCount = source.readInt(); 2390 crashCount = source.readInt(); 2391 lastActivityTime = source.readLong(); 2392 restarting = source.readLong(); 2393 flags = source.readInt(); 2394 clientPackage = source.readString(); 2395 clientLabel = source.readInt(); 2396 } 2397 2398 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2399 public RunningServiceInfo createFromParcel(Parcel source) { 2400 return new RunningServiceInfo(source); 2401 } 2402 public RunningServiceInfo[] newArray(int size) { 2403 return new RunningServiceInfo[size]; 2404 } 2405 }; 2406 2407 private RunningServiceInfo(Parcel source) { 2408 readFromParcel(source); 2409 } 2410 } 2411 2412 /** 2413 * Return a list of the services that are currently running. 2414 * 2415 * <p><b>Note: this method is only intended for debugging or implementing 2416 * service management type user interfaces.</b></p> 2417 * 2418 * @param maxNum The maximum number of entries to return in the list. The 2419 * actual number returned may be smaller, depending on how many services 2420 * are running. 2421 * 2422 * @return Returns a list of RunningServiceInfo records describing each of 2423 * the running tasks. 2424 */ 2425 public List<RunningServiceInfo> getRunningServices(int maxNum) 2426 throws SecurityException { 2427 try { 2428 return getService() 2429 .getServices(maxNum, 0); 2430 } catch (RemoteException e) { 2431 throw e.rethrowFromSystemServer(); 2432 } 2433 } 2434 2435 /** 2436 * Returns a PendingIntent you can start to show a control panel for the 2437 * given running service. If the service does not have a control panel, 2438 * null is returned. 2439 */ 2440 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2441 throws SecurityException { 2442 try { 2443 return getService() 2444 .getRunningServiceControlPanel(service); 2445 } catch (RemoteException e) { 2446 throw e.rethrowFromSystemServer(); 2447 } 2448 } 2449 2450 /** 2451 * Information you can retrieve about the available memory through 2452 * {@link ActivityManager#getMemoryInfo}. 2453 */ 2454 public static class MemoryInfo implements Parcelable { 2455 /** 2456 * The available memory on the system. This number should not 2457 * be considered absolute: due to the nature of the kernel, a significant 2458 * portion of this memory is actually in use and needed for the overall 2459 * system to run well. 2460 */ 2461 public long availMem; 2462 2463 /** 2464 * The total memory accessible by the kernel. This is basically the 2465 * RAM size of the device, not including below-kernel fixed allocations 2466 * like DMA buffers, RAM for the baseband CPU, etc. 2467 */ 2468 public long totalMem; 2469 2470 /** 2471 * The threshold of {@link #availMem} at which we consider memory to be 2472 * low and start killing background services and other non-extraneous 2473 * processes. 2474 */ 2475 public long threshold; 2476 2477 /** 2478 * Set to true if the system considers itself to currently be in a low 2479 * memory situation. 2480 */ 2481 public boolean lowMemory; 2482 2483 /** @hide */ 2484 public long hiddenAppThreshold; 2485 /** @hide */ 2486 public long secondaryServerThreshold; 2487 /** @hide */ 2488 public long visibleAppThreshold; 2489 /** @hide */ 2490 public long foregroundAppThreshold; 2491 2492 public MemoryInfo() { 2493 } 2494 2495 public int describeContents() { 2496 return 0; 2497 } 2498 2499 public void writeToParcel(Parcel dest, int flags) { 2500 dest.writeLong(availMem); 2501 dest.writeLong(totalMem); 2502 dest.writeLong(threshold); 2503 dest.writeInt(lowMemory ? 1 : 0); 2504 dest.writeLong(hiddenAppThreshold); 2505 dest.writeLong(secondaryServerThreshold); 2506 dest.writeLong(visibleAppThreshold); 2507 dest.writeLong(foregroundAppThreshold); 2508 } 2509 2510 public void readFromParcel(Parcel source) { 2511 availMem = source.readLong(); 2512 totalMem = source.readLong(); 2513 threshold = source.readLong(); 2514 lowMemory = source.readInt() != 0; 2515 hiddenAppThreshold = source.readLong(); 2516 secondaryServerThreshold = source.readLong(); 2517 visibleAppThreshold = source.readLong(); 2518 foregroundAppThreshold = source.readLong(); 2519 } 2520 2521 public static final Creator<MemoryInfo> CREATOR 2522 = new Creator<MemoryInfo>() { 2523 public MemoryInfo createFromParcel(Parcel source) { 2524 return new MemoryInfo(source); 2525 } 2526 public MemoryInfo[] newArray(int size) { 2527 return new MemoryInfo[size]; 2528 } 2529 }; 2530 2531 private MemoryInfo(Parcel source) { 2532 readFromParcel(source); 2533 } 2534 } 2535 2536 /** 2537 * Return general information about the memory state of the system. This 2538 * can be used to help decide how to manage your own memory, though note 2539 * that polling is not recommended and 2540 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2541 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2542 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2543 * level of your process as needed, which gives a better hint for how to 2544 * manage its memory. 2545 */ 2546 public void getMemoryInfo(MemoryInfo outInfo) { 2547 try { 2548 getService().getMemoryInfo(outInfo); 2549 } catch (RemoteException e) { 2550 throw e.rethrowFromSystemServer(); 2551 } 2552 } 2553 2554 /** 2555 * Information you can retrieve about an ActivityStack in the system. 2556 * @hide 2557 */ 2558 public static class StackInfo implements Parcelable { 2559 public int stackId; 2560 public Rect bounds = new Rect(); 2561 public int[] taskIds; 2562 public String[] taskNames; 2563 public Rect[] taskBounds; 2564 public int[] taskUserIds; 2565 public ComponentName topActivity; 2566 public int displayId; 2567 public int userId; 2568 public boolean visible; 2569 // Index of the stack in the display's stack list, can be used for comparison of stack order 2570 public int position; 2571 2572 @Override 2573 public int describeContents() { 2574 return 0; 2575 } 2576 2577 @Override 2578 public void writeToParcel(Parcel dest, int flags) { 2579 dest.writeInt(stackId); 2580 dest.writeInt(bounds.left); 2581 dest.writeInt(bounds.top); 2582 dest.writeInt(bounds.right); 2583 dest.writeInt(bounds.bottom); 2584 dest.writeIntArray(taskIds); 2585 dest.writeStringArray(taskNames); 2586 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2587 dest.writeInt(boundsCount); 2588 for (int i = 0; i < boundsCount; i++) { 2589 dest.writeInt(taskBounds[i].left); 2590 dest.writeInt(taskBounds[i].top); 2591 dest.writeInt(taskBounds[i].right); 2592 dest.writeInt(taskBounds[i].bottom); 2593 } 2594 dest.writeIntArray(taskUserIds); 2595 dest.writeInt(displayId); 2596 dest.writeInt(userId); 2597 dest.writeInt(visible ? 1 : 0); 2598 dest.writeInt(position); 2599 if (topActivity != null) { 2600 dest.writeInt(1); 2601 topActivity.writeToParcel(dest, 0); 2602 } else { 2603 dest.writeInt(0); 2604 } 2605 } 2606 2607 public void readFromParcel(Parcel source) { 2608 stackId = source.readInt(); 2609 bounds = new Rect( 2610 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2611 taskIds = source.createIntArray(); 2612 taskNames = source.createStringArray(); 2613 final int boundsCount = source.readInt(); 2614 if (boundsCount > 0) { 2615 taskBounds = new Rect[boundsCount]; 2616 for (int i = 0; i < boundsCount; i++) { 2617 taskBounds[i] = new Rect(); 2618 taskBounds[i].set( 2619 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2620 } 2621 } else { 2622 taskBounds = null; 2623 } 2624 taskUserIds = source.createIntArray(); 2625 displayId = source.readInt(); 2626 userId = source.readInt(); 2627 visible = source.readInt() > 0; 2628 position = source.readInt(); 2629 if (source.readInt() > 0) { 2630 topActivity = ComponentName.readFromParcel(source); 2631 } 2632 } 2633 2634 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2635 @Override 2636 public StackInfo createFromParcel(Parcel source) { 2637 return new StackInfo(source); 2638 } 2639 @Override 2640 public StackInfo[] newArray(int size) { 2641 return new StackInfo[size]; 2642 } 2643 }; 2644 2645 public StackInfo() { 2646 } 2647 2648 private StackInfo(Parcel source) { 2649 readFromParcel(source); 2650 } 2651 2652 public String toString(String prefix) { 2653 StringBuilder sb = new StringBuilder(256); 2654 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2655 sb.append(" bounds="); sb.append(bounds.toShortString()); 2656 sb.append(" displayId="); sb.append(displayId); 2657 sb.append(" userId="); sb.append(userId); 2658 sb.append("\n"); 2659 prefix = prefix + " "; 2660 for (int i = 0; i < taskIds.length; ++i) { 2661 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2662 sb.append(": "); sb.append(taskNames[i]); 2663 if (taskBounds != null) { 2664 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2665 } 2666 sb.append(" userId=").append(taskUserIds[i]); 2667 sb.append(" visible=").append(visible); 2668 if (topActivity != null) { 2669 sb.append(" topActivity=").append(topActivity); 2670 } 2671 sb.append("\n"); 2672 } 2673 return sb.toString(); 2674 } 2675 2676 @Override 2677 public String toString() { 2678 return toString(""); 2679 } 2680 } 2681 2682 /** 2683 * @hide 2684 */ 2685 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2686 try { 2687 return getService().clearApplicationUserData(packageName, 2688 observer, UserHandle.myUserId()); 2689 } catch (RemoteException e) { 2690 throw e.rethrowFromSystemServer(); 2691 } 2692 } 2693 2694 /** 2695 * Permits an application to erase its own data from disk. This is equivalent to 2696 * the user choosing to clear the app's data from within the device settings UI. It 2697 * erases all dynamic data associated with the app -- its private data and data in its 2698 * private area on external storage -- but does not remove the installed application 2699 * itself, nor any OBB files. 2700 * 2701 * @return {@code true} if the application successfully requested that the application's 2702 * data be erased; {@code false} otherwise. 2703 */ 2704 public boolean clearApplicationUserData() { 2705 return clearApplicationUserData(mContext.getPackageName(), null); 2706 } 2707 2708 2709 /** 2710 * Permits an application to get the persistent URI permissions granted to another. 2711 * 2712 * <p>Typically called by Settings. 2713 * 2714 * @param packageName application to look for the granted permissions 2715 * @return list of granted URI permissions 2716 * 2717 * @hide 2718 */ 2719 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2720 try { 2721 return getService().getGrantedUriPermissions(packageName, 2722 UserHandle.myUserId()); 2723 } catch (RemoteException e) { 2724 throw e.rethrowFromSystemServer(); 2725 } 2726 } 2727 2728 /** 2729 * Permits an application to clear the persistent URI permissions granted to another. 2730 * 2731 * <p>Typically called by Settings. 2732 * 2733 * @param packageName application to clear its granted permissions 2734 * 2735 * @hide 2736 */ 2737 public void clearGrantedUriPermissions(String packageName) { 2738 try { 2739 getService().clearGrantedUriPermissions(packageName, 2740 UserHandle.myUserId()); 2741 } catch (RemoteException e) { 2742 throw e.rethrowFromSystemServer(); 2743 } 2744 } 2745 2746 /** 2747 * Information you can retrieve about any processes that are in an error condition. 2748 */ 2749 public static class ProcessErrorStateInfo implements Parcelable { 2750 /** 2751 * Condition codes 2752 */ 2753 public static final int NO_ERROR = 0; 2754 public static final int CRASHED = 1; 2755 public static final int NOT_RESPONDING = 2; 2756 2757 /** 2758 * The condition that the process is in. 2759 */ 2760 public int condition; 2761 2762 /** 2763 * The process name in which the crash or error occurred. 2764 */ 2765 public String processName; 2766 2767 /** 2768 * The pid of this process; 0 if none 2769 */ 2770 public int pid; 2771 2772 /** 2773 * The kernel user-ID that has been assigned to this process; 2774 * currently this is not a unique ID (multiple applications can have 2775 * the same uid). 2776 */ 2777 public int uid; 2778 2779 /** 2780 * The activity name associated with the error, if known. May be null. 2781 */ 2782 public String tag; 2783 2784 /** 2785 * A short message describing the error condition. 2786 */ 2787 public String shortMsg; 2788 2789 /** 2790 * A long message describing the error condition. 2791 */ 2792 public String longMsg; 2793 2794 /** 2795 * The stack trace where the error originated. May be null. 2796 */ 2797 public String stackTrace; 2798 2799 /** 2800 * to be deprecated: This value will always be null. 2801 */ 2802 public byte[] crashData = null; 2803 2804 public ProcessErrorStateInfo() { 2805 } 2806 2807 @Override 2808 public int describeContents() { 2809 return 0; 2810 } 2811 2812 @Override 2813 public void writeToParcel(Parcel dest, int flags) { 2814 dest.writeInt(condition); 2815 dest.writeString(processName); 2816 dest.writeInt(pid); 2817 dest.writeInt(uid); 2818 dest.writeString(tag); 2819 dest.writeString(shortMsg); 2820 dest.writeString(longMsg); 2821 dest.writeString(stackTrace); 2822 } 2823 2824 public void readFromParcel(Parcel source) { 2825 condition = source.readInt(); 2826 processName = source.readString(); 2827 pid = source.readInt(); 2828 uid = source.readInt(); 2829 tag = source.readString(); 2830 shortMsg = source.readString(); 2831 longMsg = source.readString(); 2832 stackTrace = source.readString(); 2833 } 2834 2835 public static final Creator<ProcessErrorStateInfo> CREATOR = 2836 new Creator<ProcessErrorStateInfo>() { 2837 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2838 return new ProcessErrorStateInfo(source); 2839 } 2840 public ProcessErrorStateInfo[] newArray(int size) { 2841 return new ProcessErrorStateInfo[size]; 2842 } 2843 }; 2844 2845 private ProcessErrorStateInfo(Parcel source) { 2846 readFromParcel(source); 2847 } 2848 } 2849 2850 /** 2851 * Returns a list of any processes that are currently in an error condition. The result 2852 * will be null if all processes are running properly at this time. 2853 * 2854 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2855 * current error conditions (it will not return an empty list). This list ordering is not 2856 * specified. 2857 */ 2858 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2859 try { 2860 return getService().getProcessesInErrorState(); 2861 } catch (RemoteException e) { 2862 throw e.rethrowFromSystemServer(); 2863 } 2864 } 2865 2866 /** 2867 * Information you can retrieve about a running process. 2868 */ 2869 public static class RunningAppProcessInfo implements Parcelable { 2870 /** 2871 * The name of the process that this object is associated with 2872 */ 2873 public String processName; 2874 2875 /** 2876 * The pid of this process; 0 if none 2877 */ 2878 public int pid; 2879 2880 /** 2881 * The user id of this process. 2882 */ 2883 public int uid; 2884 2885 /** 2886 * All packages that have been loaded into the process. 2887 */ 2888 public String pkgList[]; 2889 2890 /** 2891 * Constant for {@link #flags}: this is an app that is unable to 2892 * correctly save its state when going to the background, 2893 * so it can not be killed while in the background. 2894 * @hide 2895 */ 2896 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2897 2898 /** 2899 * Constant for {@link #flags}: this process is associated with a 2900 * persistent system app. 2901 * @hide 2902 */ 2903 public static final int FLAG_PERSISTENT = 1<<1; 2904 2905 /** 2906 * Constant for {@link #flags}: this process is associated with a 2907 * persistent system app. 2908 * @hide 2909 */ 2910 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2911 2912 /** 2913 * Flags of information. May be any of 2914 * {@link #FLAG_CANT_SAVE_STATE}. 2915 * @hide 2916 */ 2917 public int flags; 2918 2919 /** 2920 * Last memory trim level reported to the process: corresponds to 2921 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2922 * ComponentCallbacks2.onTrimMemory(int)}. 2923 */ 2924 public int lastTrimLevel; 2925 2926 /** 2927 * Constant for {@link #importance}: This process is running the 2928 * foreground UI; that is, it is the thing currently at the top of the screen 2929 * that the user is interacting with. 2930 */ 2931 public static final int IMPORTANCE_FOREGROUND = 100; 2932 2933 /** 2934 * Constant for {@link #importance}: This process is running a foreground 2935 * service, for example to perform music playback even while the user is 2936 * not immediately in the app. This generally indicates that the process 2937 * is doing something the user actively cares about. 2938 */ 2939 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2940 2941 /** 2942 * Constant for {@link #importance}: This process is running the foreground 2943 * UI, but the device is asleep so it is not visible to the user. This means 2944 * the user is not really aware of the process, because they can not see or 2945 * interact with it, but it is quite important because it what they expect to 2946 * return to once unlocking the device. 2947 */ 2948 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2949 2950 /** 2951 * Constant for {@link #importance}: This process is running something 2952 * that is actively visible to the user, though not in the immediate 2953 * foreground. This may be running a window that is behind the current 2954 * foreground (so paused and with its state saved, not interacting with 2955 * the user, but visible to them to some degree); it may also be running 2956 * other services under the system's control that it inconsiders important. 2957 */ 2958 public static final int IMPORTANCE_VISIBLE = 200; 2959 2960 /** 2961 * Constant for {@link #importance}: This process is not something the user 2962 * is directly aware of, but is otherwise perceptable to them to some degree. 2963 */ 2964 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2965 2966 /** 2967 * Constant for {@link #importance}: This process is running an 2968 * application that can not save its state, and thus can't be killed 2969 * while in the background. 2970 * @hide 2971 */ 2972 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2973 2974 /** 2975 * Constant for {@link #importance}: This process is contains services 2976 * that should remain running. These are background services apps have 2977 * started, not something the user is aware of, so they may be killed by 2978 * the system relatively freely (though it is generally desired that they 2979 * stay running as long as they want to). 2980 */ 2981 public static final int IMPORTANCE_SERVICE = 300; 2982 2983 /** 2984 * Constant for {@link #importance}: This process process contains 2985 * background code that is expendable. 2986 */ 2987 public static final int IMPORTANCE_BACKGROUND = 400; 2988 2989 /** 2990 * Constant for {@link #importance}: This process is empty of any 2991 * actively running code. 2992 */ 2993 public static final int IMPORTANCE_EMPTY = 500; 2994 2995 /** 2996 * Constant for {@link #importance}: This process does not exist. 2997 */ 2998 public static final int IMPORTANCE_GONE = 1000; 2999 3000 /** @hide */ 3001 public static int procStateToImportance(int procState) { 3002 if (procState == PROCESS_STATE_NONEXISTENT) { 3003 return IMPORTANCE_GONE; 3004 } else if (procState >= PROCESS_STATE_HOME) { 3005 return IMPORTANCE_BACKGROUND; 3006 } else if (procState >= PROCESS_STATE_SERVICE) { 3007 return IMPORTANCE_SERVICE; 3008 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3009 return IMPORTANCE_CANT_SAVE_STATE; 3010 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 3011 return IMPORTANCE_PERCEPTIBLE; 3012 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3013 return IMPORTANCE_VISIBLE; 3014 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3015 return IMPORTANCE_TOP_SLEEPING; 3016 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3017 return IMPORTANCE_FOREGROUND_SERVICE; 3018 } else { 3019 return IMPORTANCE_FOREGROUND; 3020 } 3021 } 3022 3023 /** @hide */ 3024 public static int importanceToProcState(int importance) { 3025 if (importance == IMPORTANCE_GONE) { 3026 return PROCESS_STATE_NONEXISTENT; 3027 } else if (importance >= IMPORTANCE_BACKGROUND) { 3028 return PROCESS_STATE_HOME; 3029 } else if (importance >= IMPORTANCE_SERVICE) { 3030 return PROCESS_STATE_SERVICE; 3031 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3032 return PROCESS_STATE_HEAVY_WEIGHT; 3033 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3034 return PROCESS_STATE_IMPORTANT_BACKGROUND; 3035 } else if (importance >= IMPORTANCE_VISIBLE) { 3036 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3037 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3038 return PROCESS_STATE_TOP_SLEEPING; 3039 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3040 return PROCESS_STATE_FOREGROUND_SERVICE; 3041 } else { 3042 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3043 } 3044 } 3045 3046 /** 3047 * The relative importance level that the system places on this 3048 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 3049 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 3050 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 3051 * constants are numbered so that "more important" values are always 3052 * smaller than "less important" values. 3053 */ 3054 public int importance; 3055 3056 /** 3057 * An additional ordering within a particular {@link #importance} 3058 * category, providing finer-grained information about the relative 3059 * utility of processes within a category. This number means nothing 3060 * except that a smaller values are more recently used (and thus 3061 * more important). Currently an LRU value is only maintained for 3062 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 3063 * be maintained in the future. 3064 */ 3065 public int lru; 3066 3067 /** 3068 * Constant for {@link #importanceReasonCode}: nothing special has 3069 * been specified for the reason for this level. 3070 */ 3071 public static final int REASON_UNKNOWN = 0; 3072 3073 /** 3074 * Constant for {@link #importanceReasonCode}: one of the application's 3075 * content providers is being used by another process. The pid of 3076 * the client process is in {@link #importanceReasonPid} and the 3077 * target provider in this process is in 3078 * {@link #importanceReasonComponent}. 3079 */ 3080 public static final int REASON_PROVIDER_IN_USE = 1; 3081 3082 /** 3083 * Constant for {@link #importanceReasonCode}: one of the application's 3084 * content providers is being used by another process. The pid of 3085 * the client process is in {@link #importanceReasonPid} and the 3086 * target provider in this process is in 3087 * {@link #importanceReasonComponent}. 3088 */ 3089 public static final int REASON_SERVICE_IN_USE = 2; 3090 3091 /** 3092 * The reason for {@link #importance}, if any. 3093 */ 3094 public int importanceReasonCode; 3095 3096 /** 3097 * For the specified values of {@link #importanceReasonCode}, this 3098 * is the process ID of the other process that is a client of this 3099 * process. This will be 0 if no other process is using this one. 3100 */ 3101 public int importanceReasonPid; 3102 3103 /** 3104 * For the specified values of {@link #importanceReasonCode}, this 3105 * is the name of the component that is being used in this process. 3106 */ 3107 public ComponentName importanceReasonComponent; 3108 3109 /** 3110 * When {@link #importanceReasonPid} is non-0, this is the importance 3111 * of the other pid. @hide 3112 */ 3113 public int importanceReasonImportance; 3114 3115 /** 3116 * Current process state, as per PROCESS_STATE_* constants. 3117 * @hide 3118 */ 3119 public int processState; 3120 3121 public RunningAppProcessInfo() { 3122 importance = IMPORTANCE_FOREGROUND; 3123 importanceReasonCode = REASON_UNKNOWN; 3124 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3125 } 3126 3127 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3128 processName = pProcessName; 3129 pid = pPid; 3130 pkgList = pArr; 3131 } 3132 3133 public int describeContents() { 3134 return 0; 3135 } 3136 3137 public void writeToParcel(Parcel dest, int flags) { 3138 dest.writeString(processName); 3139 dest.writeInt(pid); 3140 dest.writeInt(uid); 3141 dest.writeStringArray(pkgList); 3142 dest.writeInt(this.flags); 3143 dest.writeInt(lastTrimLevel); 3144 dest.writeInt(importance); 3145 dest.writeInt(lru); 3146 dest.writeInt(importanceReasonCode); 3147 dest.writeInt(importanceReasonPid); 3148 ComponentName.writeToParcel(importanceReasonComponent, dest); 3149 dest.writeInt(importanceReasonImportance); 3150 dest.writeInt(processState); 3151 } 3152 3153 public void readFromParcel(Parcel source) { 3154 processName = source.readString(); 3155 pid = source.readInt(); 3156 uid = source.readInt(); 3157 pkgList = source.readStringArray(); 3158 flags = source.readInt(); 3159 lastTrimLevel = source.readInt(); 3160 importance = source.readInt(); 3161 lru = source.readInt(); 3162 importanceReasonCode = source.readInt(); 3163 importanceReasonPid = source.readInt(); 3164 importanceReasonComponent = ComponentName.readFromParcel(source); 3165 importanceReasonImportance = source.readInt(); 3166 processState = source.readInt(); 3167 } 3168 3169 public static final Creator<RunningAppProcessInfo> CREATOR = 3170 new Creator<RunningAppProcessInfo>() { 3171 public RunningAppProcessInfo createFromParcel(Parcel source) { 3172 return new RunningAppProcessInfo(source); 3173 } 3174 public RunningAppProcessInfo[] newArray(int size) { 3175 return new RunningAppProcessInfo[size]; 3176 } 3177 }; 3178 3179 private RunningAppProcessInfo(Parcel source) { 3180 readFromParcel(source); 3181 } 3182 } 3183 3184 /** 3185 * Returns a list of application processes installed on external media 3186 * that are running on the device. 3187 * 3188 * <p><b>Note: this method is only intended for debugging or building 3189 * a user-facing process management UI.</b></p> 3190 * 3191 * @return Returns a list of ApplicationInfo records, or null if none 3192 * This list ordering is not specified. 3193 * @hide 3194 */ 3195 public List<ApplicationInfo> getRunningExternalApplications() { 3196 try { 3197 return getService().getRunningExternalApplications(); 3198 } catch (RemoteException e) { 3199 throw e.rethrowFromSystemServer(); 3200 } 3201 } 3202 3203 /** 3204 * Sets the memory trim mode for a process and schedules a memory trim operation. 3205 * 3206 * <p><b>Note: this method is only intended for testing framework.</b></p> 3207 * 3208 * @return Returns true if successful. 3209 * @hide 3210 */ 3211 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3212 try { 3213 return getService().setProcessMemoryTrimLevel(process, userId, 3214 level); 3215 } catch (RemoteException e) { 3216 throw e.rethrowFromSystemServer(); 3217 } 3218 } 3219 3220 /** 3221 * Returns a list of application processes that are running on the device. 3222 * 3223 * <p><b>Note: this method is only intended for debugging or building 3224 * a user-facing process management UI.</b></p> 3225 * 3226 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3227 * running processes (it will not return an empty list). This list ordering is not 3228 * specified. 3229 */ 3230 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3231 try { 3232 return getService().getRunningAppProcesses(); 3233 } catch (RemoteException e) { 3234 throw e.rethrowFromSystemServer(); 3235 } 3236 } 3237 3238 /** 3239 * Return the importance of a given package name, based on the processes that are 3240 * currently running. The return value is one of the importance constants defined 3241 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3242 * processes that this package has code running inside of. If there are no processes 3243 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3244 * @hide 3245 */ 3246 @SystemApi @TestApi 3247 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3248 public int getPackageImportance(String packageName) { 3249 try { 3250 int procState = getService().getPackageProcessState(packageName, 3251 mContext.getOpPackageName()); 3252 return RunningAppProcessInfo.procStateToImportance(procState); 3253 } catch (RemoteException e) { 3254 throw e.rethrowFromSystemServer(); 3255 } 3256 } 3257 3258 /** 3259 * Callback to get reports about changes to the importance of a uid. Use with 3260 * {@link #addOnUidImportanceListener}. 3261 * @hide 3262 */ 3263 @SystemApi @TestApi 3264 public interface OnUidImportanceListener { 3265 /** 3266 * The importance if a given uid has changed. Will be one of the importance 3267 * values in {@link RunningAppProcessInfo}; 3268 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3269 * when the uid is no longer running at all. This callback will happen on a thread 3270 * from a thread pool, not the main UI thread. 3271 * @param uid The uid whose importance has changed. 3272 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3273 */ 3274 void onUidImportance(int uid, int importance); 3275 } 3276 3277 /** 3278 * Start monitoring changes to the imoportance of uids running in the system. 3279 * @param listener The listener callback that will receive change reports. 3280 * @param importanceCutpoint The level of importance in which the caller is interested 3281 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3282 * is used here, you will receive a call each time a uids importance transitions between 3283 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3284 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3285 * 3286 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3287 * permission to use this feature.</p> 3288 * 3289 * @throws IllegalArgumentException If the listener is already registered. 3290 * @throws SecurityException If the caller does not hold 3291 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3292 * @hide 3293 */ 3294 @SystemApi @TestApi 3295 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3296 int importanceCutpoint) { 3297 synchronized (this) { 3298 if (mImportanceListeners.containsKey(listener)) { 3299 throw new IllegalArgumentException("Listener already registered: " + listener); 3300 } 3301 // TODO: implement the cut point in the system process to avoid IPCs. 3302 UidObserver observer = new UidObserver(listener); 3303 try { 3304 getService().registerUidObserver(observer, 3305 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3306 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3307 mContext.getOpPackageName()); 3308 } catch (RemoteException e) { 3309 throw e.rethrowFromSystemServer(); 3310 } 3311 mImportanceListeners.put(listener, observer); 3312 } 3313 } 3314 3315 /** 3316 * Remove an importance listener that was previously registered with 3317 * {@link #addOnUidImportanceListener}. 3318 * 3319 * @throws IllegalArgumentException If the listener is not registered. 3320 * @hide 3321 */ 3322 @SystemApi @TestApi 3323 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3324 synchronized (this) { 3325 UidObserver observer = mImportanceListeners.remove(listener); 3326 if (observer == null) { 3327 throw new IllegalArgumentException("Listener not registered: " + listener); 3328 } 3329 try { 3330 getService().unregisterUidObserver(observer); 3331 } catch (RemoteException e) { 3332 throw e.rethrowFromSystemServer(); 3333 } 3334 } 3335 } 3336 3337 /** 3338 * Return global memory state information for the calling process. This 3339 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3340 * only fields that will be filled in are 3341 * {@link RunningAppProcessInfo#pid}, 3342 * {@link RunningAppProcessInfo#uid}, 3343 * {@link RunningAppProcessInfo#lastTrimLevel}, 3344 * {@link RunningAppProcessInfo#importance}, 3345 * {@link RunningAppProcessInfo#lru}, and 3346 * {@link RunningAppProcessInfo#importanceReasonCode}. 3347 */ 3348 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3349 try { 3350 getService().getMyMemoryState(outState); 3351 } catch (RemoteException e) { 3352 throw e.rethrowFromSystemServer(); 3353 } 3354 } 3355 3356 /** 3357 * Return information about the memory usage of one or more processes. 3358 * 3359 * <p><b>Note: this method is only intended for debugging or building 3360 * a user-facing process management UI.</b></p> 3361 * 3362 * @param pids The pids of the processes whose memory usage is to be 3363 * retrieved. 3364 * @return Returns an array of memory information, one for each 3365 * requested pid. 3366 */ 3367 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3368 try { 3369 return getService().getProcessMemoryInfo(pids); 3370 } catch (RemoteException e) { 3371 throw e.rethrowFromSystemServer(); 3372 } 3373 } 3374 3375 /** 3376 * @deprecated This is now just a wrapper for 3377 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3378 * is no longer available to applications because it allows them to 3379 * break other applications by removing their alarms, stopping their 3380 * services, etc. 3381 */ 3382 @Deprecated 3383 public void restartPackage(String packageName) { 3384 killBackgroundProcesses(packageName); 3385 } 3386 3387 /** 3388 * Have the system immediately kill all background processes associated 3389 * with the given package. This is the same as the kernel killing those 3390 * processes to reclaim memory; the system will take care of restarting 3391 * these processes in the future as needed. 3392 * 3393 * <p>You must hold the permission 3394 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3395 * call this method. 3396 * 3397 * @param packageName The name of the package whose processes are to 3398 * be killed. 3399 */ 3400 public void killBackgroundProcesses(String packageName) { 3401 try { 3402 getService().killBackgroundProcesses(packageName, 3403 UserHandle.myUserId()); 3404 } catch (RemoteException e) { 3405 throw e.rethrowFromSystemServer(); 3406 } 3407 } 3408 3409 /** 3410 * Kills the specified UID. 3411 * @param uid The UID to kill. 3412 * @param reason The reason for the kill. 3413 * 3414 * @hide 3415 */ 3416 @SystemApi 3417 @RequiresPermission(Manifest.permission.KILL_UID) 3418 public void killUid(int uid, String reason) { 3419 try { 3420 getService().killUid(UserHandle.getAppId(uid), 3421 UserHandle.getUserId(uid), reason); 3422 } catch (RemoteException e) { 3423 throw e.rethrowFromSystemServer(); 3424 } 3425 } 3426 3427 /** 3428 * Have the system perform a force stop of everything associated with 3429 * the given application package. All processes that share its uid 3430 * will be killed, all services it has running stopped, all activities 3431 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3432 * broadcast will be sent, so that any of its registered alarms can 3433 * be stopped, notifications removed, etc. 3434 * 3435 * <p>You must hold the permission 3436 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3437 * call this method. 3438 * 3439 * @param packageName The name of the package to be stopped. 3440 * @param userId The user for which the running package is to be stopped. 3441 * 3442 * @hide This is not available to third party applications due to 3443 * it allowing them to break other applications by stopping their 3444 * services, removing their alarms, etc. 3445 */ 3446 public void forceStopPackageAsUser(String packageName, int userId) { 3447 try { 3448 getService().forceStopPackage(packageName, userId); 3449 } catch (RemoteException e) { 3450 throw e.rethrowFromSystemServer(); 3451 } 3452 } 3453 3454 /** 3455 * @see #forceStopPackageAsUser(String, int) 3456 * @hide 3457 */ 3458 @SystemApi 3459 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3460 public void forceStopPackage(String packageName) { 3461 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3462 } 3463 3464 /** 3465 * Get the device configuration attributes. 3466 */ 3467 public ConfigurationInfo getDeviceConfigurationInfo() { 3468 try { 3469 return getService().getDeviceConfigurationInfo(); 3470 } catch (RemoteException e) { 3471 throw e.rethrowFromSystemServer(); 3472 } 3473 } 3474 3475 /** 3476 * Get the preferred density of icons for the launcher. This is used when 3477 * custom drawables are created (e.g., for shortcuts). 3478 * 3479 * @return density in terms of DPI 3480 */ 3481 public int getLauncherLargeIconDensity() { 3482 final Resources res = mContext.getResources(); 3483 final int density = res.getDisplayMetrics().densityDpi; 3484 final int sw = res.getConfiguration().smallestScreenWidthDp; 3485 3486 if (sw < 600) { 3487 // Smaller than approx 7" tablets, use the regular icon size. 3488 return density; 3489 } 3490 3491 switch (density) { 3492 case DisplayMetrics.DENSITY_LOW: 3493 return DisplayMetrics.DENSITY_MEDIUM; 3494 case DisplayMetrics.DENSITY_MEDIUM: 3495 return DisplayMetrics.DENSITY_HIGH; 3496 case DisplayMetrics.DENSITY_TV: 3497 return DisplayMetrics.DENSITY_XHIGH; 3498 case DisplayMetrics.DENSITY_HIGH: 3499 return DisplayMetrics.DENSITY_XHIGH; 3500 case DisplayMetrics.DENSITY_XHIGH: 3501 return DisplayMetrics.DENSITY_XXHIGH; 3502 case DisplayMetrics.DENSITY_XXHIGH: 3503 return DisplayMetrics.DENSITY_XHIGH * 2; 3504 default: 3505 // The density is some abnormal value. Return some other 3506 // abnormal value that is a reasonable scaling of it. 3507 return (int)((density*1.5f)+.5f); 3508 } 3509 } 3510 3511 /** 3512 * Get the preferred launcher icon size. This is used when custom drawables 3513 * are created (e.g., for shortcuts). 3514 * 3515 * @return dimensions of square icons in terms of pixels 3516 */ 3517 public int getLauncherLargeIconSize() { 3518 return getLauncherLargeIconSizeInner(mContext); 3519 } 3520 3521 static int getLauncherLargeIconSizeInner(Context context) { 3522 final Resources res = context.getResources(); 3523 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3524 final int sw = res.getConfiguration().smallestScreenWidthDp; 3525 3526 if (sw < 600) { 3527 // Smaller than approx 7" tablets, use the regular icon size. 3528 return size; 3529 } 3530 3531 final int density = res.getDisplayMetrics().densityDpi; 3532 3533 switch (density) { 3534 case DisplayMetrics.DENSITY_LOW: 3535 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3536 case DisplayMetrics.DENSITY_MEDIUM: 3537 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3538 case DisplayMetrics.DENSITY_TV: 3539 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3540 case DisplayMetrics.DENSITY_HIGH: 3541 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3542 case DisplayMetrics.DENSITY_XHIGH: 3543 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3544 case DisplayMetrics.DENSITY_XXHIGH: 3545 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3546 default: 3547 // The density is some abnormal value. Return some other 3548 // abnormal value that is a reasonable scaling of it. 3549 return (int)((size*1.5f) + .5f); 3550 } 3551 } 3552 3553 /** 3554 * Returns "true" if the user interface is currently being messed with 3555 * by a monkey. 3556 */ 3557 public static boolean isUserAMonkey() { 3558 try { 3559 return getService().isUserAMonkey(); 3560 } catch (RemoteException e) { 3561 throw e.rethrowFromSystemServer(); 3562 } 3563 } 3564 3565 /** 3566 * Returns "true" if device is running in a test harness. 3567 */ 3568 public static boolean isRunningInTestHarness() { 3569 return SystemProperties.getBoolean("ro.test_harness", false); 3570 } 3571 3572 /** 3573 * Returns the launch count of each installed package. 3574 * 3575 * @hide 3576 */ 3577 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3578 try { 3579 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3580 ServiceManager.getService("usagestats")); 3581 if (usageStatsService == null) { 3582 return new HashMap<String, Integer>(); 3583 } 3584 3585 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3586 ActivityThread.currentPackageName()); 3587 if (allPkgUsageStats == null) { 3588 return new HashMap<String, Integer>(); 3589 } 3590 3591 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3592 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3593 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3594 } 3595 3596 return launchCounts; 3597 } catch (RemoteException e) { 3598 Log.w(TAG, "Could not query launch counts", e); 3599 return new HashMap<String, Integer>(); 3600 } 3601 }*/ 3602 3603 /** @hide */ 3604 public static int checkComponentPermission(String permission, int uid, 3605 int owningUid, boolean exported) { 3606 // Root, system server get to do everything. 3607 final int appId = UserHandle.getAppId(uid); 3608 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3609 return PackageManager.PERMISSION_GRANTED; 3610 } 3611 // Isolated processes don't get any permissions. 3612 if (UserHandle.isIsolated(uid)) { 3613 return PackageManager.PERMISSION_DENIED; 3614 } 3615 // If there is a uid that owns whatever is being accessed, it has 3616 // blanket access to it regardless of the permissions it requires. 3617 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3618 return PackageManager.PERMISSION_GRANTED; 3619 } 3620 // If the target is not exported, then nobody else can get to it. 3621 if (!exported) { 3622 /* 3623 RuntimeException here = new RuntimeException("here"); 3624 here.fillInStackTrace(); 3625 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3626 here); 3627 */ 3628 return PackageManager.PERMISSION_DENIED; 3629 } 3630 if (permission == null) { 3631 return PackageManager.PERMISSION_GRANTED; 3632 } 3633 try { 3634 return AppGlobals.getPackageManager() 3635 .checkUidPermission(permission, uid); 3636 } catch (RemoteException e) { 3637 throw e.rethrowFromSystemServer(); 3638 } 3639 } 3640 3641 /** @hide */ 3642 public static int checkUidPermission(String permission, int uid) { 3643 try { 3644 return AppGlobals.getPackageManager() 3645 .checkUidPermission(permission, uid); 3646 } catch (RemoteException e) { 3647 throw e.rethrowFromSystemServer(); 3648 } 3649 } 3650 3651 /** 3652 * @hide 3653 * Helper for dealing with incoming user arguments to system service calls. 3654 * Takes care of checking permissions and converting USER_CURRENT to the 3655 * actual current user. 3656 * 3657 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3658 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3659 * @param userId The user id argument supplied by the caller -- this is the user 3660 * they want to run as. 3661 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3662 * to get a USER_ALL returned and deal with it correctly. If false, 3663 * an exception will be thrown if USER_ALL is supplied. 3664 * @param requireFull If true, the caller must hold 3665 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3666 * different user than their current process; otherwise they must hold 3667 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3668 * @param name Optional textual name of the incoming call; only for generating error messages. 3669 * @param callerPackage Optional package name of caller; only for error messages. 3670 * 3671 * @return Returns the user ID that the call should run as. Will always be a concrete 3672 * user number, unless <var>allowAll</var> is true in which case it could also be 3673 * USER_ALL. 3674 */ 3675 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3676 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3677 if (UserHandle.getUserId(callingUid) == userId) { 3678 return userId; 3679 } 3680 try { 3681 return getService().handleIncomingUser(callingPid, 3682 callingUid, userId, allowAll, requireFull, name, callerPackage); 3683 } catch (RemoteException e) { 3684 throw e.rethrowFromSystemServer(); 3685 } 3686 } 3687 3688 /** 3689 * Gets the userId of the current foreground user. Requires system permissions. 3690 * @hide 3691 */ 3692 @SystemApi 3693 public static int getCurrentUser() { 3694 UserInfo ui; 3695 try { 3696 ui = getService().getCurrentUser(); 3697 return ui != null ? ui.id : 0; 3698 } catch (RemoteException e) { 3699 throw e.rethrowFromSystemServer(); 3700 } 3701 } 3702 3703 /** 3704 * @param userid the user's id. Zero indicates the default user. 3705 * @hide 3706 */ 3707 public boolean switchUser(int userid) { 3708 try { 3709 return getService().switchUser(userid); 3710 } catch (RemoteException e) { 3711 throw e.rethrowFromSystemServer(); 3712 } 3713 } 3714 3715 /** 3716 * Logs out current current foreground user by switching to the system user and stopping the 3717 * user being switched from. 3718 * @hide 3719 */ 3720 public static void logoutCurrentUser() { 3721 int currentUser = ActivityManager.getCurrentUser(); 3722 if (currentUser != UserHandle.USER_SYSTEM) { 3723 try { 3724 getService().switchUser(UserHandle.USER_SYSTEM); 3725 getService().stopUser(currentUser, /* force= */ false, null); 3726 } catch (RemoteException e) { 3727 e.rethrowFromSystemServer(); 3728 } 3729 } 3730 } 3731 3732 /** {@hide} */ 3733 public static final int FLAG_OR_STOPPED = 1 << 0; 3734 /** {@hide} */ 3735 public static final int FLAG_AND_LOCKED = 1 << 1; 3736 /** {@hide} */ 3737 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3738 /** {@hide} */ 3739 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3740 3741 /** 3742 * Return whether the given user is actively running. This means that 3743 * the user is in the "started" state, not "stopped" -- it is currently 3744 * allowed to run code through scheduled alarms, receiving broadcasts, 3745 * etc. A started user may be either the current foreground user or a 3746 * background user; the result here does not distinguish between the two. 3747 * @param userId the user's id. Zero indicates the default user. 3748 * @hide 3749 */ 3750 public boolean isUserRunning(int userId) { 3751 try { 3752 return getService().isUserRunning(userId, 0); 3753 } catch (RemoteException e) { 3754 throw e.rethrowFromSystemServer(); 3755 } 3756 } 3757 3758 /** {@hide} */ 3759 public boolean isVrModePackageEnabled(ComponentName component) { 3760 try { 3761 return getService().isVrModePackageEnabled(component); 3762 } catch (RemoteException e) { 3763 throw e.rethrowFromSystemServer(); 3764 } 3765 } 3766 3767 /** 3768 * Perform a system dump of various state associated with the given application 3769 * package name. This call blocks while the dump is being performed, so should 3770 * not be done on a UI thread. The data will be written to the given file 3771 * descriptor as text. An application must hold the 3772 * {@link android.Manifest.permission#DUMP} permission to make this call. 3773 * @param fd The file descriptor that the dump should be written to. The file 3774 * descriptor is <em>not</em> closed by this function; the caller continues to 3775 * own it. 3776 * @param packageName The name of the package that is to be dumped. 3777 */ 3778 public void dumpPackageState(FileDescriptor fd, String packageName) { 3779 dumpPackageStateStatic(fd, packageName); 3780 } 3781 3782 /** 3783 * @hide 3784 */ 3785 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3786 FileOutputStream fout = new FileOutputStream(fd); 3787 PrintWriter pw = new FastPrintWriter(fout); 3788 dumpService(pw, fd, "package", new String[] { packageName }); 3789 pw.println(); 3790 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3791 "-a", "package", packageName }); 3792 pw.println(); 3793 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3794 pw.println(); 3795 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3796 pw.println(); 3797 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3798 pw.println(); 3799 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3800 pw.flush(); 3801 } 3802 3803 /** 3804 * @hide 3805 */ 3806 public static boolean isSystemReady() { 3807 if (!sSystemReady) { 3808 if (ActivityThread.isSystem()) { 3809 sSystemReady = 3810 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3811 } else { 3812 // Since this is being called from outside system server, system should be 3813 // ready by now. 3814 sSystemReady = true; 3815 } 3816 } 3817 return sSystemReady; 3818 } 3819 3820 /** 3821 * @hide 3822 */ 3823 public static void broadcastStickyIntent(Intent intent, int userId) { 3824 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3825 } 3826 3827 /** 3828 * Convenience for sending a sticky broadcast. For internal use only. 3829 * 3830 * @hide 3831 */ 3832 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3833 try { 3834 getService().broadcastIntent( 3835 null, intent, null, null, Activity.RESULT_OK, null, null, 3836 null /*permission*/, appOp, null, false, true, userId); 3837 } catch (RemoteException ex) { 3838 } 3839 } 3840 3841 /** 3842 * @hide 3843 */ 3844 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3845 String tag) { 3846 try { 3847 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3848 sourceUid, sourcePkg, tag); 3849 } catch (RemoteException ex) { 3850 } 3851 } 3852 3853 /** 3854 * @hide 3855 */ 3856 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3857 try { 3858 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3859 } catch (RemoteException ex) { 3860 } 3861 } 3862 3863 /** 3864 * @hide 3865 */ 3866 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3867 try { 3868 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3869 } catch (RemoteException ex) { 3870 } 3871 } 3872 3873 /** 3874 * @hide 3875 */ 3876 public static IActivityManager getService() { 3877 return IActivityManagerSingleton.get(); 3878 } 3879 3880 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3881 new Singleton<IActivityManager>() { 3882 @Override 3883 protected IActivityManager create() { 3884 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3885 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3886 return am; 3887 } 3888 }; 3889 3890 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3891 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3892 IBinder service = ServiceManager.checkService(name); 3893 if (service == null) { 3894 pw.println(" (Service not found)"); 3895 return; 3896 } 3897 TransferPipe tp = null; 3898 try { 3899 pw.flush(); 3900 tp = new TransferPipe(); 3901 tp.setBufferPrefix(" "); 3902 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3903 tp.go(fd, 10000); 3904 } catch (Throwable e) { 3905 if (tp != null) { 3906 tp.kill(); 3907 } 3908 pw.println("Failure dumping service:"); 3909 e.printStackTrace(pw); 3910 } 3911 } 3912 3913 /** 3914 * Request that the system start watching for the calling process to exceed a pss 3915 * size as given here. Once called, the system will look for any occasions where it 3916 * sees the associated process with a larger pss size and, when this happens, automatically 3917 * pull a heap dump from it and allow the user to share the data. Note that this request 3918 * continues running even if the process is killed and restarted. To remove the watch, 3919 * use {@link #clearWatchHeapLimit()}. 3920 * 3921 * <p>This API only work if the calling process has been marked as 3922 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3923 * (userdebug or eng) build.</p> 3924 * 3925 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3926 * handle heap limit reports themselves.</p> 3927 * 3928 * @param pssSize The size in bytes to set the limit at. 3929 */ 3930 public void setWatchHeapLimit(long pssSize) { 3931 try { 3932 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3933 mContext.getPackageName()); 3934 } catch (RemoteException e) { 3935 throw e.rethrowFromSystemServer(); 3936 } 3937 } 3938 3939 /** 3940 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3941 * If your package has an activity handling this action, it will be launched with the 3942 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3943 * match the activty must support this action and a MIME type of "*/*". 3944 */ 3945 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3946 3947 /** 3948 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3949 */ 3950 public void clearWatchHeapLimit() { 3951 try { 3952 getService().setDumpHeapDebugLimit(null, 0, 0, null); 3953 } catch (RemoteException e) { 3954 throw e.rethrowFromSystemServer(); 3955 } 3956 } 3957 3958 /** 3959 * @hide 3960 */ 3961 public void startLockTaskMode(int taskId) { 3962 try { 3963 getService().startLockTaskModeById(taskId); 3964 } catch (RemoteException e) { 3965 throw e.rethrowFromSystemServer(); 3966 } 3967 } 3968 3969 /** 3970 * @hide 3971 */ 3972 public void stopLockTaskMode() { 3973 try { 3974 getService().stopLockTaskMode(); 3975 } catch (RemoteException e) { 3976 throw e.rethrowFromSystemServer(); 3977 } 3978 } 3979 3980 /** 3981 * Return whether currently in lock task mode. When in this mode 3982 * no new tasks can be created or switched to. 3983 * 3984 * @see Activity#startLockTask() 3985 * 3986 * @deprecated Use {@link #getLockTaskModeState} instead. 3987 */ 3988 @Deprecated 3989 public boolean isInLockTaskMode() { 3990 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3991 } 3992 3993 /** 3994 * Return the current state of task locking. The three possible outcomes 3995 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3996 * and {@link #LOCK_TASK_MODE_PINNED}. 3997 * 3998 * @see Activity#startLockTask() 3999 */ 4000 public int getLockTaskModeState() { 4001 try { 4002 return getService().getLockTaskModeState(); 4003 } catch (RemoteException e) { 4004 throw e.rethrowFromSystemServer(); 4005 } 4006 } 4007 4008 /** 4009 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4010 * thread can be a VR thread in a process at a time, and that thread may be subject to 4011 * restrictions on the amount of time it can run. 4012 * 4013 * To reset the VR thread for an application, a tid of 0 can be passed. 4014 * 4015 * @see android.os.Process#myTid() 4016 * @param tid tid of the VR thread 4017 */ 4018 public static void setVrThread(int tid) { 4019 try { 4020 getService().setVrThread(tid); 4021 } catch (RemoteException e) { 4022 // pass 4023 } 4024 } 4025 4026 /** 4027 * The AppTask allows you to manage your own application's tasks. 4028 * See {@link android.app.ActivityManager#getAppTasks()} 4029 */ 4030 public static class AppTask { 4031 private IAppTask mAppTaskImpl; 4032 4033 /** @hide */ 4034 public AppTask(IAppTask task) { 4035 mAppTaskImpl = task; 4036 } 4037 4038 /** 4039 * Finishes all activities in this task and removes it from the recent tasks list. 4040 */ 4041 public void finishAndRemoveTask() { 4042 try { 4043 mAppTaskImpl.finishAndRemoveTask(); 4044 } catch (RemoteException e) { 4045 throw e.rethrowFromSystemServer(); 4046 } 4047 } 4048 4049 /** 4050 * Get the RecentTaskInfo associated with this task. 4051 * 4052 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4053 */ 4054 public RecentTaskInfo getTaskInfo() { 4055 try { 4056 return mAppTaskImpl.getTaskInfo(); 4057 } catch (RemoteException e) { 4058 throw e.rethrowFromSystemServer(); 4059 } 4060 } 4061 4062 /** 4063 * Bring this task to the foreground. If it contains activities, they will be 4064 * brought to the foreground with it and their instances re-created if needed. 4065 * If it doesn't contain activities, the root activity of the task will be 4066 * re-launched. 4067 */ 4068 public void moveToFront() { 4069 try { 4070 mAppTaskImpl.moveToFront(); 4071 } catch (RemoteException e) { 4072 throw e.rethrowFromSystemServer(); 4073 } 4074 } 4075 4076 /** 4077 * Start an activity in this task. Brings the task to the foreground. If this task 4078 * is not currently active (that is, its id < 0), then a new activity for the given 4079 * Intent will be launched as the root of the task and the task brought to the 4080 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4081 * an activity to launch in a new task, then a new activity for the given Intent will 4082 * be launched on top of the task and the task brought to the foreground. If this 4083 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4084 * or would otherwise be launched in to a new task, then the activity not launched but 4085 * this task be brought to the foreground and a new intent delivered to the top 4086 * activity if appropriate. 4087 * 4088 * <p>In other words, you generally want to use an Intent here that does not specify 4089 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4090 * and let the system do the right thing.</p> 4091 * 4092 * @param intent The Intent describing the new activity to be launched on the task. 4093 * @param options Optional launch options. 4094 * 4095 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4096 */ 4097 public void startActivity(Context context, Intent intent, Bundle options) { 4098 ActivityThread thread = ActivityThread.currentActivityThread(); 4099 thread.getInstrumentation().execStartActivityFromAppTask(context, 4100 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4101 } 4102 4103 /** 4104 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4105 * Intent of this AppTask. 4106 * 4107 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4108 * be set; otherwise, it will be cleared. 4109 */ 4110 public void setExcludeFromRecents(boolean exclude) { 4111 try { 4112 mAppTaskImpl.setExcludeFromRecents(exclude); 4113 } catch (RemoteException e) { 4114 throw e.rethrowFromSystemServer(); 4115 } 4116 } 4117 } 4118} 4119