ActivityManager.java revision 08992ac57e973d6bf32693725ebb341a481e5944
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", true); 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, long procStateSeq) { 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 /** 409 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 410 * for a startForegroundService operation. 411 * @hide 412 */ 413 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 414 415 /** @hide User operation call: success! */ 416 public static final int USER_OP_SUCCESS = 0; 417 418 /** @hide User operation call: given user id is not known. */ 419 public static final int USER_OP_UNKNOWN_USER = -1; 420 421 /** @hide User operation call: given user id is the current user, can't be stopped. */ 422 public static final int USER_OP_IS_CURRENT = -2; 423 424 /** @hide User operation call: system user can't be stopped. */ 425 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 426 427 /** @hide User operation call: one of related users cannot be stopped. */ 428 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 429 430 /** @hide Not a real process state. */ 431 public static final int PROCESS_STATE_UNKNOWN = -1; 432 433 /** @hide Process is a persistent system process. */ 434 public static final int PROCESS_STATE_PERSISTENT = 0; 435 436 /** @hide Process is a persistent system process and is doing UI. */ 437 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 438 439 /** @hide Process is hosting the current top activities. Note that this covers 440 * all activities that are visible to the user. */ 441 public static final int PROCESS_STATE_TOP = 2; 442 443 /** @hide Process is hosting a foreground service due to a system binding. */ 444 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 445 446 /** @hide Process is hosting a foreground service. */ 447 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 448 449 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 450 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 451 452 /** @hide Process is important to the user, and something they are aware of. */ 453 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 454 455 /** @hide Process is important to the user, but not something they are aware of. */ 456 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 457 458 /** @hide Process is in the background running a backup/restore operation. */ 459 public static final int PROCESS_STATE_BACKUP = 8; 460 461 /** @hide Process is in the background, but it can't restore its state so we want 462 * to try to avoid killing it. */ 463 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 464 465 /** @hide Process is in the background running a service. Unlike oom_adj, this level 466 * is used for both the normal running in background state and the executing 467 * operations state. */ 468 public static final int PROCESS_STATE_SERVICE = 10; 469 470 /** @hide Process is in the background running a receiver. Note that from the 471 * perspective of oom_adj receivers run at a higher foreground level, but for our 472 * prioritization here that is not necessary and putting them below services means 473 * many fewer changes in some process states as they receive broadcasts. */ 474 public static final int PROCESS_STATE_RECEIVER = 11; 475 476 /** @hide Process is in the background but hosts the home activity. */ 477 public static final int PROCESS_STATE_HOME = 12; 478 479 /** @hide Process is in the background but hosts the last shown activity. */ 480 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 481 482 /** @hide Process is being cached for later use and contains activities. */ 483 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 484 485 /** @hide Process is being cached for later use and is a client of another cached 486 * process that contains activities. */ 487 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 488 489 /** @hide Process is being cached for later use and is empty. */ 490 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 491 492 /** @hide Process does not exist. */ 493 public static final int PROCESS_STATE_NONEXISTENT = 17; 494 495 /** @hide The lowest process state number */ 496 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 497 498 /** @hide The highest process state number */ 499 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 500 501 /** @hide Should this process state be considered a background state? */ 502 public static final boolean isProcStateBackground(int procState) { 503 return procState >= PROCESS_STATE_BACKUP; 504 } 505 506 /** @hide requestType for assist context: only basic information. */ 507 public static final int ASSIST_CONTEXT_BASIC = 0; 508 509 /** @hide requestType for assist context: generate full AssistStructure. */ 510 public static final int ASSIST_CONTEXT_FULL = 1; 511 512 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 513 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 514 515 /** @hide Flag for registerUidObserver: report changes in process state. */ 516 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 517 518 /** @hide Flag for registerUidObserver: report uid gone. */ 519 public static final int UID_OBSERVER_GONE = 1<<1; 520 521 /** @hide Flag for registerUidObserver: report uid has become idle. */ 522 public static final int UID_OBSERVER_IDLE = 1<<2; 523 524 /** @hide Flag for registerUidObserver: report uid has become active. */ 525 public static final int UID_OBSERVER_ACTIVE = 1<<3; 526 527 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 528 public static final int APP_START_MODE_NORMAL = 0; 529 530 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 531 public static final int APP_START_MODE_DELAYED = 1; 532 533 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 534 * rigid errors (throwing exception). */ 535 public static final int APP_START_MODE_DELAYED_RIGID = 2; 536 537 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 538 * launches; this is the mode for ephemeral apps. */ 539 public static final int APP_START_MODE_DISABLED = 3; 540 541 /** 542 * Lock task mode is not active. 543 */ 544 public static final int LOCK_TASK_MODE_NONE = 0; 545 546 /** 547 * Full lock task mode is active. 548 */ 549 public static final int LOCK_TASK_MODE_LOCKED = 1; 550 551 /** 552 * App pinning mode is active. 553 */ 554 public static final int LOCK_TASK_MODE_PINNED = 2; 555 556 Point mAppTaskThumbnailSize; 557 558 /*package*/ ActivityManager(Context context, Handler handler) { 559 mContext = context; 560 } 561 562 /** 563 * Screen compatibility mode: the application most always run in 564 * compatibility mode. 565 * @hide 566 */ 567 public static final int COMPAT_MODE_ALWAYS = -1; 568 569 /** 570 * Screen compatibility mode: the application can never run in 571 * compatibility mode. 572 * @hide 573 */ 574 public static final int COMPAT_MODE_NEVER = -2; 575 576 /** 577 * Screen compatibility mode: unknown. 578 * @hide 579 */ 580 public static final int COMPAT_MODE_UNKNOWN = -3; 581 582 /** 583 * Screen compatibility mode: the application currently has compatibility 584 * mode disabled. 585 * @hide 586 */ 587 public static final int COMPAT_MODE_DISABLED = 0; 588 589 /** 590 * Screen compatibility mode: the application currently has compatibility 591 * mode enabled. 592 * @hide 593 */ 594 public static final int COMPAT_MODE_ENABLED = 1; 595 596 /** 597 * Screen compatibility mode: request to toggle the application's 598 * compatibility mode. 599 * @hide 600 */ 601 public static final int COMPAT_MODE_TOGGLE = 2; 602 603 /** @hide */ 604 public static class StackId { 605 /** Invalid stack ID. */ 606 public static final int INVALID_STACK_ID = -1; 607 608 /** First static stack ID. */ 609 public static final int FIRST_STATIC_STACK_ID = 0; 610 611 /** Home activity stack ID. */ 612 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 613 614 /** ID of stack where fullscreen activities are normally launched into. */ 615 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 616 617 /** ID of stack where freeform/resized activities are normally launched into. */ 618 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 619 620 /** ID of stack that occupies a dedicated region of the screen. */ 621 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 622 623 /** ID of stack that always on top (always visible) when it exist. */ 624 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 625 626 /** ID of stack that contains the Recents activity. */ 627 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 628 629 /** ID of stack that contains activities launched by the assistant. */ 630 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 631 632 /** Last static stack stack ID. */ 633 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 634 635 /** Start of ID range used by stacks that are created dynamically. */ 636 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 637 638 public static boolean isStaticStack(int stackId) { 639 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 640 } 641 642 public static boolean isDynamicStack(int stackId) { 643 return stackId >= FIRST_DYNAMIC_STACK_ID; 644 } 645 646 /** 647 * Returns true if the activities contained in the input stack display a shadow around 648 * their border. 649 */ 650 public static boolean hasWindowShadow(int stackId) { 651 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 652 } 653 654 /** 655 * Returns true if the activities contained in the input stack display a decor view. 656 */ 657 public static boolean hasWindowDecor(int stackId) { 658 return stackId == FREEFORM_WORKSPACE_STACK_ID; 659 } 660 661 /** 662 * Returns true if the tasks contained in the stack can be resized independently of the 663 * stack. 664 */ 665 public static boolean isTaskResizeAllowed(int stackId) { 666 return stackId == FREEFORM_WORKSPACE_STACK_ID; 667 } 668 669 /** Returns true if the task bounds should persist across power cycles. */ 670 public static boolean persistTaskBounds(int stackId) { 671 return stackId == FREEFORM_WORKSPACE_STACK_ID; 672 } 673 674 /** 675 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 676 */ 677 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 678 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 679 } 680 681 /** 682 * Returns true if we try to maintain focus in the current stack when the top activity 683 * finishes. 684 */ 685 public static boolean keepFocusInStackIfPossible(int stackId) { 686 return stackId == FREEFORM_WORKSPACE_STACK_ID 687 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 688 } 689 690 /** 691 * Returns true if Stack size is affected by the docked stack changing size. 692 */ 693 public static boolean isResizeableByDockedStack(int stackId) { 694 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 695 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 696 } 697 698 /** 699 * Returns true if the size of tasks in the input stack are affected by the docked stack 700 * changing size. 701 */ 702 public static boolean isTaskResizeableByDockedStack(int stackId) { 703 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 704 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 705 && stackId != ASSISTANT_STACK_ID; 706 } 707 708 /** 709 * Returns true if the input stack is affected by drag resizing. 710 */ 711 public static boolean isStackAffectedByDragResizing(int stackId) { 712 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 713 && stackId != ASSISTANT_STACK_ID; 714 } 715 716 /** 717 * Returns true if the windows of tasks being moved to the target stack from the source 718 * stack should be replaced, meaning that window manager will keep the old window around 719 * until the new is ready. 720 */ 721 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 722 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 723 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 724 } 725 726 /** 727 * Return whether a stackId is a stack containing floating windows. Floating windows 728 * are laid out differently as they are allowed to extend past the display bounds 729 * without overscan insets. 730 */ 731 public static boolean tasksAreFloating(int stackId) { 732 return stackId == FREEFORM_WORKSPACE_STACK_ID 733 || stackId == PINNED_STACK_ID; 734 } 735 736 /** 737 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 738 * are generally fullscreen stacks. 739 */ 740 public static boolean isBackdropToTranslucentActivity(int stackId) { 741 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 742 || stackId == ASSISTANT_STACK_ID; 743 } 744 745 /** 746 * Returns true if animation specs should be constructed for app transition that moves 747 * the task to the specified stack. 748 */ 749 public static boolean useAnimationSpecForAppTransition(int stackId) { 750 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 751 // reboots. 752 return stackId == FREEFORM_WORKSPACE_STACK_ID 753 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 754 || stackId == ASSISTANT_STACK_ID 755 || stackId == DOCKED_STACK_ID 756 || stackId == INVALID_STACK_ID; 757 } 758 759 /** 760 * Returns true if the windows in the stack can receive input keys. 761 */ 762 public static boolean canReceiveKeys(int stackId) { 763 return stackId != PINNED_STACK_ID; 764 } 765 766 /** 767 * Returns true if the stack can be visible above lockscreen. 768 */ 769 public static boolean isAllowedOverLockscreen(int stackId) { 770 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 771 stackId == ASSISTANT_STACK_ID; 772 } 773 774 /** 775 * Returns true if activities from stasks in the given {@param stackId} are allowed to 776 * enter picture-in-picture. 777 */ 778 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 779 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 780 stackId != RECENTS_STACK_ID; 781 } 782 783 public static boolean isAlwaysOnTop(int stackId) { 784 return stackId == PINNED_STACK_ID; 785 } 786 787 /** 788 * Returns true if the top task in the task is allowed to return home when finished and 789 * there are other tasks in the stack. 790 */ 791 public static boolean allowTopTaskToReturnHome(int stackId) { 792 return stackId != PINNED_STACK_ID; 793 } 794 795 /** 796 * Returns true if the stack should be resized to match the bounds specified by 797 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 798 */ 799 public static boolean resizeStackWithLaunchBounds(int stackId) { 800 return stackId == PINNED_STACK_ID; 801 } 802 803 /** 804 * Returns true if any visible windows belonging to apps in this stack should be kept on 805 * screen when the app is killed due to something like the low memory killer. 806 */ 807 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 808 return stackId != PINNED_STACK_ID; 809 } 810 811 /** 812 * Returns true if the backdrop on the client side should match the frame of the window. 813 * Returns false, if the backdrop should be fullscreen. 814 */ 815 public static boolean useWindowFrameForBackdrop(int stackId) { 816 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 817 } 818 819 /** 820 * Returns true if a window from the specified stack with {@param stackId} are normally 821 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 822 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 823 * etc. 824 */ 825 public static boolean normallyFullscreenWindows(int stackId) { 826 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 827 && stackId != DOCKED_STACK_ID; 828 } 829 830 /** 831 * Returns true if the input stack id should only be present on a device that supports 832 * multi-window mode. 833 * @see android.app.ActivityManager#supportsMultiWindow 834 */ 835 public static boolean isMultiWindowStack(int stackId) { 836 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 837 || stackId == DOCKED_STACK_ID; 838 } 839 840 /** 841 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 842 */ 843 public static boolean isHomeOrRecentsStack(int stackId) { 844 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 845 } 846 847 /** 848 * Returns true if activities contained in this stack can request visible behind by 849 * calling {@link Activity#requestVisibleBehind}. 850 */ 851 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 852 return stackId == FULLSCREEN_WORKSPACE_STACK_ID || 853 stackId == ASSISTANT_STACK_ID; 854 } 855 856 /** 857 * Returns true if this stack may be scaled without resizing, and windows within may need 858 * to be configured as such. 859 */ 860 public static boolean windowsAreScaleable(int stackId) { 861 return stackId == PINNED_STACK_ID; 862 } 863 864 /** 865 * Returns true if windows in this stack should be given move animations by default. 866 */ 867 public static boolean hasMovementAnimations(int stackId) { 868 return stackId != PINNED_STACK_ID; 869 } 870 871 /** Returns true if the input stack and its content can affect the device orientation. */ 872 public static boolean canSpecifyOrientation(int stackId) { 873 return stackId == HOME_STACK_ID 874 || stackId == RECENTS_STACK_ID 875 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 876 || stackId == ASSISTANT_STACK_ID 877 || isDynamicStack(stackId); 878 } 879 } 880 881 /** 882 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 883 * specifies the position of the created docked stack at the top half of the screen if 884 * in portrait mode or at the left half of the screen if in landscape mode. 885 * @hide 886 */ 887 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 888 889 /** 890 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 891 * specifies the position of the created docked stack at the bottom half of the screen if 892 * in portrait mode or at the right half of the screen if in landscape mode. 893 * @hide 894 */ 895 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 896 897 /** 898 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 899 * that the resize doesn't need to preserve the window, and can be skipped if bounds 900 * is unchanged. This mode is used by window manager in most cases. 901 * @hide 902 */ 903 public static final int RESIZE_MODE_SYSTEM = 0; 904 905 /** 906 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 907 * that the resize should preserve the window if possible. 908 * @hide 909 */ 910 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 911 912 /** 913 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 914 * that the resize should be performed even if the bounds appears unchanged. 915 * @hide 916 */ 917 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 918 919 /** 920 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 921 * manager during a screen rotation. 922 * @hide 923 */ 924 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 925 926 /** 927 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 928 * resize is due to a drag action. 929 * @hide 930 */ 931 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 932 933 /** 934 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 935 * that the resize should preserve the window if possible, and should not be skipped 936 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 937 * is ending. 938 * @hide 939 */ 940 public static final int RESIZE_MODE_USER_FORCED = 941 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 942 943 /** @hide */ 944 public int getFrontActivityScreenCompatMode() { 945 try { 946 return getService().getFrontActivityScreenCompatMode(); 947 } catch (RemoteException e) { 948 throw e.rethrowFromSystemServer(); 949 } 950 } 951 952 /** @hide */ 953 public void setFrontActivityScreenCompatMode(int mode) { 954 try { 955 getService().setFrontActivityScreenCompatMode(mode); 956 } catch (RemoteException e) { 957 throw e.rethrowFromSystemServer(); 958 } 959 } 960 961 /** @hide */ 962 public int getPackageScreenCompatMode(String packageName) { 963 try { 964 return getService().getPackageScreenCompatMode(packageName); 965 } catch (RemoteException e) { 966 throw e.rethrowFromSystemServer(); 967 } 968 } 969 970 /** @hide */ 971 public void setPackageScreenCompatMode(String packageName, int mode) { 972 try { 973 getService().setPackageScreenCompatMode(packageName, mode); 974 } catch (RemoteException e) { 975 throw e.rethrowFromSystemServer(); 976 } 977 } 978 979 /** @hide */ 980 public boolean getPackageAskScreenCompat(String packageName) { 981 try { 982 return getService().getPackageAskScreenCompat(packageName); 983 } catch (RemoteException e) { 984 throw e.rethrowFromSystemServer(); 985 } 986 } 987 988 /** @hide */ 989 public void setPackageAskScreenCompat(String packageName, boolean ask) { 990 try { 991 getService().setPackageAskScreenCompat(packageName, ask); 992 } catch (RemoteException e) { 993 throw e.rethrowFromSystemServer(); 994 } 995 } 996 997 /** 998 * Return the approximate per-application memory class of the current 999 * device. This gives you an idea of how hard a memory limit you should 1000 * impose on your application to let the overall system work best. The 1001 * returned value is in megabytes; the baseline Android memory class is 1002 * 16 (which happens to be the Java heap limit of those devices); some 1003 * device with more memory may return 24 or even higher numbers. 1004 */ 1005 public int getMemoryClass() { 1006 return staticGetMemoryClass(); 1007 } 1008 1009 /** @hide */ 1010 static public int staticGetMemoryClass() { 1011 // Really brain dead right now -- just take this from the configured 1012 // vm heap size, and assume it is in megabytes and thus ends with "m". 1013 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1014 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1015 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1016 } 1017 return staticGetLargeMemoryClass(); 1018 } 1019 1020 /** 1021 * Return the approximate per-application memory class of the current 1022 * device when an application is running with a large heap. This is the 1023 * space available for memory-intensive applications; most applications 1024 * should not need this amount of memory, and should instead stay with the 1025 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1026 * This may be the same size as {@link #getMemoryClass()} on memory 1027 * constrained devices, or it may be significantly larger on devices with 1028 * a large amount of available RAM. 1029 * 1030 * <p>The is the size of the application's Dalvik heap if it has 1031 * specified <code>android:largeHeap="true"</code> in its manifest. 1032 */ 1033 public int getLargeMemoryClass() { 1034 return staticGetLargeMemoryClass(); 1035 } 1036 1037 /** @hide */ 1038 static public int staticGetLargeMemoryClass() { 1039 // Really brain dead right now -- just take this from the configured 1040 // vm heap size, and assume it is in megabytes and thus ends with "m". 1041 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1042 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1043 } 1044 1045 /** 1046 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1047 * is ultimately up to the device configuration, but currently it generally means 1048 * something in the class of a 512MB device with about a 800x480 or less screen. 1049 * This is mostly intended to be used by apps to determine whether they should turn 1050 * off certain features that require more RAM. 1051 */ 1052 public boolean isLowRamDevice() { 1053 return isLowRamDeviceStatic(); 1054 } 1055 1056 /** @hide */ 1057 public static boolean isLowRamDeviceStatic() { 1058 return RoSystemProperties.CONFIG_LOW_RAM; 1059 } 1060 1061 /** 1062 * Used by persistent processes to determine if they are running on a 1063 * higher-end device so should be okay using hardware drawing acceleration 1064 * (which tends to consume a lot more RAM). 1065 * @hide 1066 */ 1067 static public boolean isHighEndGfx() { 1068 return !isLowRamDeviceStatic() && 1069 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1070 } 1071 1072 /** 1073 * Return the maximum number of recents entries that we will maintain and show. 1074 * @hide 1075 */ 1076 static public int getMaxRecentTasksStatic() { 1077 if (gMaxRecentTasks < 0) { 1078 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1079 } 1080 return gMaxRecentTasks; 1081 } 1082 1083 /** 1084 * Return the default limit on the number of recents that an app can make. 1085 * @hide 1086 */ 1087 static public int getDefaultAppRecentsLimitStatic() { 1088 return getMaxRecentTasksStatic() / 6; 1089 } 1090 1091 /** 1092 * Return the maximum limit on the number of recents that an app can make. 1093 * @hide 1094 */ 1095 static public int getMaxAppRecentsLimitStatic() { 1096 return getMaxRecentTasksStatic() / 2; 1097 } 1098 1099 /** 1100 * Returns true if the system supports at least one form of multi-window. 1101 * E.g. freeform, split-screen, picture-in-picture. 1102 * @hide 1103 */ 1104 static public boolean supportsMultiWindow() { 1105 return !isLowRamDeviceStatic() 1106 && Resources.getSystem().getBoolean( 1107 com.android.internal.R.bool.config_supportsMultiWindow); 1108 } 1109 1110 /** 1111 * Returns true if the system supports split screen multi-window. 1112 * @hide 1113 */ 1114 static public boolean supportsSplitScreenMultiWindow() { 1115 return supportsMultiWindow() 1116 && Resources.getSystem().getBoolean( 1117 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1118 } 1119 1120 /** 1121 * Return the maximum number of actions that will be displayed in the picture-in-picture UI when 1122 * the user interacts with the activity currently in picture-in-picture mode. 1123 */ 1124 public static int getMaxNumPictureInPictureActions() { 1125 return NUM_ALLOWED_PIP_ACTIONS; 1126 } 1127 1128 /** 1129 * Information you can set and retrieve about the current activity within the recent task list. 1130 */ 1131 public static class TaskDescription implements Parcelable { 1132 /** @hide */ 1133 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1134 private static final String ATTR_TASKDESCRIPTIONLABEL = 1135 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1136 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1137 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1138 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1139 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1140 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1141 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1142 1143 private String mLabel; 1144 private Bitmap mIcon; 1145 private String mIconFilename; 1146 private int mColorPrimary; 1147 private int mColorBackground; 1148 1149 /** 1150 * Creates the TaskDescription to the specified values. 1151 * 1152 * @param label A label and description of the current state of this task. 1153 * @param icon An icon that represents the current state of this task. 1154 * @param colorPrimary A color to override the theme's primary color. This color must be 1155 * opaque. 1156 */ 1157 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1158 this(label, icon, null, colorPrimary, 0); 1159 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1160 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1161 } 1162 } 1163 1164 /** 1165 * Creates the TaskDescription to the specified values. 1166 * 1167 * @param label A label and description of the current state of this activity. 1168 * @param icon An icon that represents the current state of this activity. 1169 */ 1170 public TaskDescription(String label, Bitmap icon) { 1171 this(label, icon, null, 0, 0); 1172 } 1173 1174 /** 1175 * Creates the TaskDescription to the specified values. 1176 * 1177 * @param label A label and description of the current state of this activity. 1178 */ 1179 public TaskDescription(String label) { 1180 this(label, null, null, 0, 0); 1181 } 1182 1183 /** 1184 * Creates an empty TaskDescription. 1185 */ 1186 public TaskDescription() { 1187 this(null, null, null, 0, 0); 1188 } 1189 1190 /** @hide */ 1191 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1192 int colorBackground) { 1193 mLabel = label; 1194 mIcon = icon; 1195 mIconFilename = iconFilename; 1196 mColorPrimary = colorPrimary; 1197 mColorBackground = colorBackground; 1198 } 1199 1200 /** 1201 * Creates a copy of another TaskDescription. 1202 */ 1203 public TaskDescription(TaskDescription td) { 1204 copyFrom(td); 1205 } 1206 1207 /** 1208 * Copies this the values from another TaskDescription. 1209 * @hide 1210 */ 1211 public void copyFrom(TaskDescription other) { 1212 mLabel = other.mLabel; 1213 mIcon = other.mIcon; 1214 mIconFilename = other.mIconFilename; 1215 mColorPrimary = other.mColorPrimary; 1216 mColorBackground = other.mColorBackground; 1217 } 1218 1219 private TaskDescription(Parcel source) { 1220 readFromParcel(source); 1221 } 1222 1223 /** 1224 * Sets the label for this task description. 1225 * @hide 1226 */ 1227 public void setLabel(String label) { 1228 mLabel = label; 1229 } 1230 1231 /** 1232 * Sets the primary color for this task description. 1233 * @hide 1234 */ 1235 public void setPrimaryColor(int primaryColor) { 1236 // Ensure that the given color is valid 1237 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1238 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1239 } 1240 mColorPrimary = primaryColor; 1241 } 1242 1243 /** 1244 * Sets the background color for this task description. 1245 * @hide 1246 */ 1247 public void setBackgroundColor(int backgroundColor) { 1248 // Ensure that the given color is valid 1249 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1250 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1251 } 1252 mColorBackground = backgroundColor; 1253 } 1254 1255 /** 1256 * Sets the icon for this task description. 1257 * @hide 1258 */ 1259 public void setIcon(Bitmap icon) { 1260 mIcon = icon; 1261 } 1262 1263 /** 1264 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1265 * bitmap. 1266 * @hide 1267 */ 1268 public void setIconFilename(String iconFilename) { 1269 mIconFilename = iconFilename; 1270 mIcon = null; 1271 } 1272 1273 /** 1274 * @return The label and description of the current state of this task. 1275 */ 1276 public String getLabel() { 1277 return mLabel; 1278 } 1279 1280 /** 1281 * @return The icon that represents the current state of this task. 1282 */ 1283 public Bitmap getIcon() { 1284 if (mIcon != null) { 1285 return mIcon; 1286 } 1287 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1288 } 1289 1290 /** @hide */ 1291 public String getIconFilename() { 1292 return mIconFilename; 1293 } 1294 1295 /** @hide */ 1296 public Bitmap getInMemoryIcon() { 1297 return mIcon; 1298 } 1299 1300 /** @hide */ 1301 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1302 if (iconFilename != null) { 1303 try { 1304 return getService().getTaskDescriptionIcon(iconFilename, 1305 userId); 1306 } catch (RemoteException e) { 1307 throw e.rethrowFromSystemServer(); 1308 } 1309 } 1310 return null; 1311 } 1312 1313 /** 1314 * @return The color override on the theme's primary color. 1315 */ 1316 public int getPrimaryColor() { 1317 return mColorPrimary; 1318 } 1319 1320 /** 1321 * @return The background color. 1322 * @hide 1323 */ 1324 public int getBackgroundColor() { 1325 return mColorBackground; 1326 } 1327 1328 /** @hide */ 1329 public void saveToXml(XmlSerializer out) throws IOException { 1330 if (mLabel != null) { 1331 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1332 } 1333 if (mColorPrimary != 0) { 1334 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1335 Integer.toHexString(mColorPrimary)); 1336 } 1337 if (mColorBackground != 0) { 1338 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1339 Integer.toHexString(mColorBackground)); 1340 } 1341 if (mIconFilename != null) { 1342 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1343 } 1344 } 1345 1346 /** @hide */ 1347 public void restoreFromXml(String attrName, String attrValue) { 1348 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1349 setLabel(attrValue); 1350 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1351 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1352 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1353 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1354 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1355 setIconFilename(attrValue); 1356 } 1357 } 1358 1359 @Override 1360 public int describeContents() { 1361 return 0; 1362 } 1363 1364 @Override 1365 public void writeToParcel(Parcel dest, int flags) { 1366 if (mLabel == null) { 1367 dest.writeInt(0); 1368 } else { 1369 dest.writeInt(1); 1370 dest.writeString(mLabel); 1371 } 1372 if (mIcon == null) { 1373 dest.writeInt(0); 1374 } else { 1375 dest.writeInt(1); 1376 mIcon.writeToParcel(dest, 0); 1377 } 1378 dest.writeInt(mColorPrimary); 1379 dest.writeInt(mColorBackground); 1380 if (mIconFilename == null) { 1381 dest.writeInt(0); 1382 } else { 1383 dest.writeInt(1); 1384 dest.writeString(mIconFilename); 1385 } 1386 } 1387 1388 public void readFromParcel(Parcel source) { 1389 mLabel = source.readInt() > 0 ? source.readString() : null; 1390 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1391 mColorPrimary = source.readInt(); 1392 mColorBackground = source.readInt(); 1393 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1394 } 1395 1396 public static final Creator<TaskDescription> CREATOR 1397 = new Creator<TaskDescription>() { 1398 public TaskDescription createFromParcel(Parcel source) { 1399 return new TaskDescription(source); 1400 } 1401 public TaskDescription[] newArray(int size) { 1402 return new TaskDescription[size]; 1403 } 1404 }; 1405 1406 @Override 1407 public String toString() { 1408 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1409 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1410 " colorBackground: " + mColorBackground; 1411 } 1412 } 1413 1414 /** 1415 * Information you can retrieve about tasks that the user has most recently 1416 * started or visited. 1417 */ 1418 public static class RecentTaskInfo implements Parcelable { 1419 /** 1420 * If this task is currently running, this is the identifier for it. 1421 * If it is not running, this will be -1. 1422 */ 1423 public int id; 1424 1425 /** 1426 * The true identifier of this task, valid even if it is not running. 1427 */ 1428 public int persistentId; 1429 1430 /** 1431 * The original Intent used to launch the task. You can use this 1432 * Intent to re-launch the task (if it is no longer running) or bring 1433 * the current task to the front. 1434 */ 1435 public Intent baseIntent; 1436 1437 /** 1438 * If this task was started from an alias, this is the actual 1439 * activity component that was initially started; the component of 1440 * the baseIntent in this case is the name of the actual activity 1441 * implementation that the alias referred to. Otherwise, this is null. 1442 */ 1443 public ComponentName origActivity; 1444 1445 /** 1446 * The actual activity component that started the task. 1447 * @hide 1448 */ 1449 @Nullable 1450 public ComponentName realActivity; 1451 1452 /** 1453 * Description of the task's last state. 1454 */ 1455 public CharSequence description; 1456 1457 /** 1458 * The id of the ActivityStack this Task was on most recently. 1459 * @hide 1460 */ 1461 public int stackId; 1462 1463 /** 1464 * The id of the user the task was running as. 1465 * @hide 1466 */ 1467 public int userId; 1468 1469 /** 1470 * The first time this task was active. 1471 * @hide 1472 */ 1473 public long firstActiveTime; 1474 1475 /** 1476 * The last time this task was active. 1477 * @hide 1478 */ 1479 public long lastActiveTime; 1480 1481 /** 1482 * The recent activity values for the highest activity in the stack to have set the values. 1483 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1484 */ 1485 public TaskDescription taskDescription; 1486 1487 /** 1488 * Task affiliation for grouping with other tasks. 1489 */ 1490 public int affiliatedTaskId; 1491 1492 /** 1493 * Task affiliation color of the source task with the affiliated task id. 1494 * 1495 * @hide 1496 */ 1497 public int affiliatedTaskColor; 1498 1499 /** 1500 * The component launched as the first activity in the task. 1501 * This can be considered the "application" of this task. 1502 */ 1503 public ComponentName baseActivity; 1504 1505 /** 1506 * The activity component at the top of the history stack of the task. 1507 * This is what the user is currently doing. 1508 */ 1509 public ComponentName topActivity; 1510 1511 /** 1512 * Number of activities in this task. 1513 */ 1514 public int numActivities; 1515 1516 /** 1517 * The bounds of the task. 1518 * @hide 1519 */ 1520 public Rect bounds; 1521 1522 /** 1523 * True if the task can go in the docked stack. 1524 * @hide 1525 */ 1526 public boolean supportsSplitScreenMultiWindow; 1527 1528 /** 1529 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1530 * @hide 1531 */ 1532 public int resizeMode; 1533 1534 public RecentTaskInfo() { 1535 } 1536 1537 @Override 1538 public int describeContents() { 1539 return 0; 1540 } 1541 1542 @Override 1543 public void writeToParcel(Parcel dest, int flags) { 1544 dest.writeInt(id); 1545 dest.writeInt(persistentId); 1546 if (baseIntent != null) { 1547 dest.writeInt(1); 1548 baseIntent.writeToParcel(dest, 0); 1549 } else { 1550 dest.writeInt(0); 1551 } 1552 ComponentName.writeToParcel(origActivity, dest); 1553 ComponentName.writeToParcel(realActivity, dest); 1554 TextUtils.writeToParcel(description, dest, 1555 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1556 if (taskDescription != null) { 1557 dest.writeInt(1); 1558 taskDescription.writeToParcel(dest, 0); 1559 } else { 1560 dest.writeInt(0); 1561 } 1562 dest.writeInt(stackId); 1563 dest.writeInt(userId); 1564 dest.writeLong(firstActiveTime); 1565 dest.writeLong(lastActiveTime); 1566 dest.writeInt(affiliatedTaskId); 1567 dest.writeInt(affiliatedTaskColor); 1568 ComponentName.writeToParcel(baseActivity, dest); 1569 ComponentName.writeToParcel(topActivity, dest); 1570 dest.writeInt(numActivities); 1571 if (bounds != null) { 1572 dest.writeInt(1); 1573 bounds.writeToParcel(dest, 0); 1574 } else { 1575 dest.writeInt(0); 1576 } 1577 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1578 dest.writeInt(resizeMode); 1579 } 1580 1581 public void readFromParcel(Parcel source) { 1582 id = source.readInt(); 1583 persistentId = source.readInt(); 1584 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1585 origActivity = ComponentName.readFromParcel(source); 1586 realActivity = ComponentName.readFromParcel(source); 1587 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1588 taskDescription = source.readInt() > 0 ? 1589 TaskDescription.CREATOR.createFromParcel(source) : null; 1590 stackId = source.readInt(); 1591 userId = source.readInt(); 1592 firstActiveTime = source.readLong(); 1593 lastActiveTime = source.readLong(); 1594 affiliatedTaskId = source.readInt(); 1595 affiliatedTaskColor = source.readInt(); 1596 baseActivity = ComponentName.readFromParcel(source); 1597 topActivity = ComponentName.readFromParcel(source); 1598 numActivities = source.readInt(); 1599 bounds = source.readInt() > 0 ? 1600 Rect.CREATOR.createFromParcel(source) : null; 1601 supportsSplitScreenMultiWindow = source.readInt() == 1; 1602 resizeMode = source.readInt(); 1603 } 1604 1605 public static final Creator<RecentTaskInfo> CREATOR 1606 = new Creator<RecentTaskInfo>() { 1607 public RecentTaskInfo createFromParcel(Parcel source) { 1608 return new RecentTaskInfo(source); 1609 } 1610 public RecentTaskInfo[] newArray(int size) { 1611 return new RecentTaskInfo[size]; 1612 } 1613 }; 1614 1615 private RecentTaskInfo(Parcel source) { 1616 readFromParcel(source); 1617 } 1618 } 1619 1620 /** 1621 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1622 * that have set their 1623 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1624 */ 1625 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1626 1627 /** 1628 * Provides a list that does not contain any 1629 * recent tasks that currently are not available to the user. 1630 */ 1631 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1632 1633 /** 1634 * Provides a list that contains recent tasks for all 1635 * profiles of a user. 1636 * @hide 1637 */ 1638 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1639 1640 /** 1641 * Ignores all tasks that are on the home stack. 1642 * @hide 1643 */ 1644 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1645 1646 /** 1647 * Ignores the top task in the docked stack. 1648 * @hide 1649 */ 1650 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1651 1652 /** 1653 * Ignores all tasks that are on the pinned stack. 1654 * @hide 1655 */ 1656 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1657 1658 /** 1659 * <p></p>Return a list of the tasks that the user has recently launched, with 1660 * the most recent being first and older ones after in order. 1661 * 1662 * <p><b>Note: this method is only intended for debugging and presenting 1663 * task management user interfaces</b>. This should never be used for 1664 * core logic in an application, such as deciding between different 1665 * behaviors based on the information found here. Such uses are 1666 * <em>not</em> supported, and will likely break in the future. For 1667 * example, if multiple applications can be actively running at the 1668 * same time, assumptions made about the meaning of the data here for 1669 * purposes of control flow will be incorrect.</p> 1670 * 1671 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1672 * no longer available to third party applications: the introduction of 1673 * document-centric recents means 1674 * it can leak personal information to the caller. For backwards compatibility, 1675 * it will still return a small subset of its data: at least the caller's 1676 * own tasks (though see {@link #getAppTasks()} for the correct supported 1677 * way to retrieve that information), and possibly some other tasks 1678 * such as home that are known to not be sensitive. 1679 * 1680 * @param maxNum The maximum number of entries to return in the list. The 1681 * actual number returned may be smaller, depending on how many tasks the 1682 * user has started and the maximum number the system can remember. 1683 * @param flags Information about what to return. May be any combination 1684 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1685 * 1686 * @return Returns a list of RecentTaskInfo records describing each of 1687 * the recent tasks. 1688 */ 1689 @Deprecated 1690 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1691 throws SecurityException { 1692 try { 1693 return getService().getRecentTasks(maxNum, 1694 flags, UserHandle.myUserId()).getList(); 1695 } catch (RemoteException e) { 1696 throw e.rethrowFromSystemServer(); 1697 } 1698 } 1699 1700 /** 1701 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1702 * specific user. It requires holding 1703 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1704 * @param maxNum The maximum number of entries to return in the list. The 1705 * actual number returned may be smaller, depending on how many tasks the 1706 * user has started and the maximum number the system can remember. 1707 * @param flags Information about what to return. May be any combination 1708 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1709 * 1710 * @return Returns a list of RecentTaskInfo records describing each of 1711 * the recent tasks. Most recently activated tasks go first. 1712 * 1713 * @hide 1714 */ 1715 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1716 throws SecurityException { 1717 try { 1718 return getService().getRecentTasks(maxNum, 1719 flags, userId).getList(); 1720 } catch (RemoteException e) { 1721 throw e.rethrowFromSystemServer(); 1722 } 1723 } 1724 1725 /** 1726 * Information you can retrieve about a particular task that is currently 1727 * "running" in the system. Note that a running task does not mean the 1728 * given task actually has a process it is actively running in; it simply 1729 * means that the user has gone to it and never closed it, but currently 1730 * the system may have killed its process and is only holding on to its 1731 * last state in order to restart it when the user returns. 1732 */ 1733 public static class RunningTaskInfo implements Parcelable { 1734 /** 1735 * A unique identifier for this task. 1736 */ 1737 public int id; 1738 1739 /** 1740 * The stack that currently contains this task. 1741 * @hide 1742 */ 1743 public int stackId; 1744 1745 /** 1746 * The component launched as the first activity in the task. This can 1747 * be considered the "application" of this task. 1748 */ 1749 public ComponentName baseActivity; 1750 1751 /** 1752 * The activity component at the top of the history stack of the task. 1753 * This is what the user is currently doing. 1754 */ 1755 public ComponentName topActivity; 1756 1757 /** 1758 * Thumbnail representation of the task's current state. Currently 1759 * always null. 1760 */ 1761 public Bitmap thumbnail; 1762 1763 /** 1764 * Description of the task's current state. 1765 */ 1766 public CharSequence description; 1767 1768 /** 1769 * Number of activities in this task. 1770 */ 1771 public int numActivities; 1772 1773 /** 1774 * Number of activities that are currently running (not stopped 1775 * and persisted) in this task. 1776 */ 1777 public int numRunning; 1778 1779 /** 1780 * Last time task was run. For sorting. 1781 * @hide 1782 */ 1783 public long lastActiveTime; 1784 1785 /** 1786 * True if the task can go in the docked stack. 1787 * @hide 1788 */ 1789 public boolean supportsSplitScreenMultiWindow; 1790 1791 /** 1792 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1793 * @hide 1794 */ 1795 public int resizeMode; 1796 1797 public RunningTaskInfo() { 1798 } 1799 1800 public int describeContents() { 1801 return 0; 1802 } 1803 1804 public void writeToParcel(Parcel dest, int flags) { 1805 dest.writeInt(id); 1806 dest.writeInt(stackId); 1807 ComponentName.writeToParcel(baseActivity, dest); 1808 ComponentName.writeToParcel(topActivity, dest); 1809 if (thumbnail != null) { 1810 dest.writeInt(1); 1811 thumbnail.writeToParcel(dest, 0); 1812 } else { 1813 dest.writeInt(0); 1814 } 1815 TextUtils.writeToParcel(description, dest, 1816 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1817 dest.writeInt(numActivities); 1818 dest.writeInt(numRunning); 1819 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1820 dest.writeInt(resizeMode); 1821 } 1822 1823 public void readFromParcel(Parcel source) { 1824 id = source.readInt(); 1825 stackId = source.readInt(); 1826 baseActivity = ComponentName.readFromParcel(source); 1827 topActivity = ComponentName.readFromParcel(source); 1828 if (source.readInt() != 0) { 1829 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1830 } else { 1831 thumbnail = null; 1832 } 1833 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1834 numActivities = source.readInt(); 1835 numRunning = source.readInt(); 1836 supportsSplitScreenMultiWindow = source.readInt() != 0; 1837 resizeMode = source.readInt(); 1838 } 1839 1840 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1841 public RunningTaskInfo createFromParcel(Parcel source) { 1842 return new RunningTaskInfo(source); 1843 } 1844 public RunningTaskInfo[] newArray(int size) { 1845 return new RunningTaskInfo[size]; 1846 } 1847 }; 1848 1849 private RunningTaskInfo(Parcel source) { 1850 readFromParcel(source); 1851 } 1852 } 1853 1854 /** 1855 * Get the list of tasks associated with the calling application. 1856 * 1857 * @return The list of tasks associated with the application making this call. 1858 * @throws SecurityException 1859 */ 1860 public List<ActivityManager.AppTask> getAppTasks() { 1861 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1862 List<IBinder> appTasks; 1863 try { 1864 appTasks = getService().getAppTasks(mContext.getPackageName()); 1865 } catch (RemoteException e) { 1866 throw e.rethrowFromSystemServer(); 1867 } 1868 int numAppTasks = appTasks.size(); 1869 for (int i = 0; i < numAppTasks; i++) { 1870 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1871 } 1872 return tasks; 1873 } 1874 1875 /** 1876 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1877 * with {@link #addAppTask}. 1878 */ 1879 public Size getAppTaskThumbnailSize() { 1880 synchronized (this) { 1881 ensureAppTaskThumbnailSizeLocked(); 1882 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1883 } 1884 } 1885 1886 private void ensureAppTaskThumbnailSizeLocked() { 1887 if (mAppTaskThumbnailSize == null) { 1888 try { 1889 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1890 } catch (RemoteException e) { 1891 throw e.rethrowFromSystemServer(); 1892 } 1893 } 1894 } 1895 1896 /** 1897 * Add a new {@link AppTask} for the calling application. This will create a new 1898 * recents entry that is added to the <b>end</b> of all existing recents. 1899 * 1900 * @param activity The activity that is adding the entry. This is used to help determine 1901 * the context that the new recents entry will be in. 1902 * @param intent The Intent that describes the recents entry. This is the same Intent that 1903 * you would have used to launch the activity for it. In generally you will want to set 1904 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1905 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1906 * entry will exist without an activity, so it doesn't make sense to not retain it when 1907 * its activity disappears. The given Intent here also must have an explicit ComponentName 1908 * set on it. 1909 * @param description Optional additional description information. 1910 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1911 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1912 * recreated in your process, probably in a way you don't like, before the recents entry 1913 * is added. 1914 * 1915 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1916 * most likely cause of failure is that there is no more room for more tasks for your app. 1917 */ 1918 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1919 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1920 Point size; 1921 synchronized (this) { 1922 ensureAppTaskThumbnailSizeLocked(); 1923 size = mAppTaskThumbnailSize; 1924 } 1925 final int tw = thumbnail.getWidth(); 1926 final int th = thumbnail.getHeight(); 1927 if (tw != size.x || th != size.y) { 1928 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1929 1930 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1931 float scale; 1932 float dx = 0, dy = 0; 1933 if (tw * size.x > size.y * th) { 1934 scale = (float) size.x / (float) th; 1935 dx = (size.y - tw * scale) * 0.5f; 1936 } else { 1937 scale = (float) size.y / (float) tw; 1938 dy = (size.x - th * scale) * 0.5f; 1939 } 1940 Matrix matrix = new Matrix(); 1941 matrix.setScale(scale, scale); 1942 matrix.postTranslate((int) (dx + 0.5f), 0); 1943 1944 Canvas canvas = new Canvas(bm); 1945 canvas.drawBitmap(thumbnail, matrix, null); 1946 canvas.setBitmap(null); 1947 1948 thumbnail = bm; 1949 } 1950 if (description == null) { 1951 description = new TaskDescription(); 1952 } 1953 try { 1954 return getService().addAppTask(activity.getActivityToken(), 1955 intent, description, thumbnail); 1956 } catch (RemoteException e) { 1957 throw e.rethrowFromSystemServer(); 1958 } 1959 } 1960 1961 /** 1962 * Return a list of the tasks that are currently running, with 1963 * the most recent being first and older ones after in order. Note that 1964 * "running" does not mean any of the task's code is currently loaded or 1965 * activity -- the task may have been frozen by the system, so that it 1966 * can be restarted in its previous state when next brought to the 1967 * foreground. 1968 * 1969 * <p><b>Note: this method is only intended for debugging and presenting 1970 * task management user interfaces</b>. This should never be used for 1971 * core logic in an application, such as deciding between different 1972 * behaviors based on the information found here. Such uses are 1973 * <em>not</em> supported, and will likely break in the future. For 1974 * example, if multiple applications can be actively running at the 1975 * same time, assumptions made about the meaning of the data here for 1976 * purposes of control flow will be incorrect.</p> 1977 * 1978 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1979 * is no longer available to third party 1980 * applications: the introduction of document-centric recents means 1981 * it can leak person information to the caller. For backwards compatibility, 1982 * it will still retu rn a small subset of its data: at least the caller's 1983 * own tasks, and possibly some other tasks 1984 * such as home that are known to not be sensitive. 1985 * 1986 * @param maxNum The maximum number of entries to return in the list. The 1987 * actual number returned may be smaller, depending on how many tasks the 1988 * user has started. 1989 * 1990 * @return Returns a list of RunningTaskInfo records describing each of 1991 * the running tasks. 1992 */ 1993 @Deprecated 1994 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1995 throws SecurityException { 1996 try { 1997 return getService().getTasks(maxNum, 0); 1998 } catch (RemoteException e) { 1999 throw e.rethrowFromSystemServer(); 2000 } 2001 } 2002 2003 /** 2004 * Completely remove the given task. 2005 * 2006 * @param taskId Identifier of the task to be removed. 2007 * @return Returns true if the given task was found and removed. 2008 * 2009 * @hide 2010 */ 2011 public boolean removeTask(int taskId) throws SecurityException { 2012 try { 2013 return getService().removeTask(taskId); 2014 } catch (RemoteException e) { 2015 throw e.rethrowFromSystemServer(); 2016 } 2017 } 2018 2019 /** 2020 * Metadata related to the {@link TaskThumbnail}. 2021 * 2022 * @hide 2023 */ 2024 public static class TaskThumbnailInfo implements Parcelable { 2025 /** @hide */ 2026 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2027 private static final String ATTR_TASK_WIDTH = 2028 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2029 private static final String ATTR_TASK_HEIGHT = 2030 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2031 private static final String ATTR_SCREEN_ORIENTATION = 2032 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2033 2034 public int taskWidth; 2035 public int taskHeight; 2036 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2037 2038 public TaskThumbnailInfo() { 2039 // Do nothing 2040 } 2041 2042 private TaskThumbnailInfo(Parcel source) { 2043 readFromParcel(source); 2044 } 2045 2046 /** 2047 * Resets this info state to the initial state. 2048 * @hide 2049 */ 2050 public void reset() { 2051 taskWidth = 0; 2052 taskHeight = 0; 2053 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2054 } 2055 2056 /** 2057 * Copies from another ThumbnailInfo. 2058 */ 2059 public void copyFrom(TaskThumbnailInfo o) { 2060 taskWidth = o.taskWidth; 2061 taskHeight = o.taskHeight; 2062 screenOrientation = o.screenOrientation; 2063 } 2064 2065 /** @hide */ 2066 public void saveToXml(XmlSerializer out) throws IOException { 2067 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2068 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2069 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2070 } 2071 2072 /** @hide */ 2073 public void restoreFromXml(String attrName, String attrValue) { 2074 if (ATTR_TASK_WIDTH.equals(attrName)) { 2075 taskWidth = Integer.parseInt(attrValue); 2076 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2077 taskHeight = Integer.parseInt(attrValue); 2078 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2079 screenOrientation = Integer.parseInt(attrValue); 2080 } 2081 } 2082 2083 public int describeContents() { 2084 return 0; 2085 } 2086 2087 public void writeToParcel(Parcel dest, int flags) { 2088 dest.writeInt(taskWidth); 2089 dest.writeInt(taskHeight); 2090 dest.writeInt(screenOrientation); 2091 } 2092 2093 public void readFromParcel(Parcel source) { 2094 taskWidth = source.readInt(); 2095 taskHeight = source.readInt(); 2096 screenOrientation = source.readInt(); 2097 } 2098 2099 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2100 public TaskThumbnailInfo createFromParcel(Parcel source) { 2101 return new TaskThumbnailInfo(source); 2102 } 2103 public TaskThumbnailInfo[] newArray(int size) { 2104 return new TaskThumbnailInfo[size]; 2105 } 2106 }; 2107 } 2108 2109 /** @hide */ 2110 public static class TaskThumbnail implements Parcelable { 2111 public Bitmap mainThumbnail; 2112 public ParcelFileDescriptor thumbnailFileDescriptor; 2113 public TaskThumbnailInfo thumbnailInfo; 2114 2115 public TaskThumbnail() { 2116 } 2117 2118 private TaskThumbnail(Parcel source) { 2119 readFromParcel(source); 2120 } 2121 2122 public int describeContents() { 2123 if (thumbnailFileDescriptor != null) { 2124 return thumbnailFileDescriptor.describeContents(); 2125 } 2126 return 0; 2127 } 2128 2129 public void writeToParcel(Parcel dest, int flags) { 2130 if (mainThumbnail != null) { 2131 dest.writeInt(1); 2132 mainThumbnail.writeToParcel(dest, flags); 2133 } else { 2134 dest.writeInt(0); 2135 } 2136 if (thumbnailFileDescriptor != null) { 2137 dest.writeInt(1); 2138 thumbnailFileDescriptor.writeToParcel(dest, flags); 2139 } else { 2140 dest.writeInt(0); 2141 } 2142 if (thumbnailInfo != null) { 2143 dest.writeInt(1); 2144 thumbnailInfo.writeToParcel(dest, flags); 2145 } else { 2146 dest.writeInt(0); 2147 } 2148 } 2149 2150 public void readFromParcel(Parcel source) { 2151 if (source.readInt() != 0) { 2152 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2153 } else { 2154 mainThumbnail = null; 2155 } 2156 if (source.readInt() != 0) { 2157 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2158 } else { 2159 thumbnailFileDescriptor = null; 2160 } 2161 if (source.readInt() != 0) { 2162 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2163 } else { 2164 thumbnailInfo = null; 2165 } 2166 } 2167 2168 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2169 public TaskThumbnail createFromParcel(Parcel source) { 2170 return new TaskThumbnail(source); 2171 } 2172 public TaskThumbnail[] newArray(int size) { 2173 return new TaskThumbnail[size]; 2174 } 2175 }; 2176 } 2177 2178 /** 2179 * Represents a task snapshot. 2180 * @hide 2181 */ 2182 public static class TaskSnapshot implements Parcelable { 2183 2184 private final GraphicBuffer mSnapshot; 2185 private final int mOrientation; 2186 private final Rect mContentInsets; 2187 private final boolean mReducedResolution; 2188 private final float mScale; 2189 2190 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2191 boolean reducedResolution, float scale) { 2192 mSnapshot = snapshot; 2193 mOrientation = orientation; 2194 mContentInsets = new Rect(contentInsets); 2195 mReducedResolution = reducedResolution; 2196 mScale = scale; 2197 } 2198 2199 private TaskSnapshot(Parcel source) { 2200 mSnapshot = source.readParcelable(null /* classLoader */); 2201 mOrientation = source.readInt(); 2202 mContentInsets = source.readParcelable(null /* classLoader */); 2203 mReducedResolution = source.readBoolean(); 2204 mScale = source.readFloat(); 2205 } 2206 2207 /** 2208 * @return The graphic buffer representing the screenshot. 2209 */ 2210 public GraphicBuffer getSnapshot() { 2211 return mSnapshot; 2212 } 2213 2214 /** 2215 * @return The screen orientation the screenshot was taken in. 2216 */ 2217 public int getOrientation() { 2218 return mOrientation; 2219 } 2220 2221 /** 2222 * @return The system/content insets on the snapshot. These can be clipped off in order to 2223 * remove any areas behind system bars in the snapshot. 2224 */ 2225 public Rect getContentInsets() { 2226 return mContentInsets; 2227 } 2228 2229 /** 2230 * @return Whether this snapshot is a down-sampled version of the full resolution. 2231 */ 2232 public boolean isReducedResolution() { 2233 return mReducedResolution; 2234 } 2235 2236 /** 2237 * @return The scale this snapshot was taken in. 2238 */ 2239 public float getScale() { 2240 return mScale; 2241 } 2242 2243 @Override 2244 public int describeContents() { 2245 return 0; 2246 } 2247 2248 @Override 2249 public void writeToParcel(Parcel dest, int flags) { 2250 dest.writeParcelable(mSnapshot, 0); 2251 dest.writeInt(mOrientation); 2252 dest.writeParcelable(mContentInsets, 0); 2253 dest.writeBoolean(mReducedResolution); 2254 dest.writeFloat(mScale); 2255 } 2256 2257 @Override 2258 public String toString() { 2259 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2260 + " mContentInsets=" + mContentInsets.toShortString() 2261 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2262 } 2263 2264 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2265 public TaskSnapshot createFromParcel(Parcel source) { 2266 return new TaskSnapshot(source); 2267 } 2268 public TaskSnapshot[] newArray(int size) { 2269 return new TaskSnapshot[size]; 2270 } 2271 }; 2272 } 2273 2274 /** @hide */ 2275 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2276 try { 2277 return getService().getTaskThumbnail(id); 2278 } catch (RemoteException e) { 2279 throw e.rethrowFromSystemServer(); 2280 } 2281 } 2282 2283 /** 2284 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2285 * activity along with the task, so it is positioned immediately behind 2286 * the task. 2287 */ 2288 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2289 2290 /** 2291 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2292 * user-instigated action, so the current activity will not receive a 2293 * hint that the user is leaving. 2294 */ 2295 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2296 2297 /** 2298 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2299 * with a null options argument. 2300 * 2301 * @param taskId The identifier of the task to be moved, as found in 2302 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2303 * @param flags Additional operational flags, 0 or more of 2304 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2305 */ 2306 public void moveTaskToFront(int taskId, int flags) { 2307 moveTaskToFront(taskId, flags, null); 2308 } 2309 2310 /** 2311 * Ask that the task associated with a given task ID be moved to the 2312 * front of the stack, so it is now visible to the user. Requires that 2313 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2314 * or a SecurityException will be thrown. 2315 * 2316 * @param taskId The identifier of the task to be moved, as found in 2317 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2318 * @param flags Additional operational flags, 0 or more of 2319 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2320 * @param options Additional options for the operation, either null or 2321 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2322 * Context.startActivity(Intent, Bundle)}. 2323 */ 2324 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2325 try { 2326 getService().moveTaskToFront(taskId, flags, options); 2327 } catch (RemoteException e) { 2328 throw e.rethrowFromSystemServer(); 2329 } 2330 } 2331 2332 /** 2333 * Information you can retrieve about a particular Service that is 2334 * currently running in the system. 2335 */ 2336 public static class RunningServiceInfo implements Parcelable { 2337 /** 2338 * The service component. 2339 */ 2340 public ComponentName service; 2341 2342 /** 2343 * If non-zero, this is the process the service is running in. 2344 */ 2345 public int pid; 2346 2347 /** 2348 * The UID that owns this service. 2349 */ 2350 public int uid; 2351 2352 /** 2353 * The name of the process this service runs in. 2354 */ 2355 public String process; 2356 2357 /** 2358 * Set to true if the service has asked to run as a foreground process. 2359 */ 2360 public boolean foreground; 2361 2362 /** 2363 * The time when the service was first made active, either by someone 2364 * starting or binding to it. This 2365 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2366 */ 2367 public long activeSince; 2368 2369 /** 2370 * Set to true if this service has been explicitly started. 2371 */ 2372 public boolean started; 2373 2374 /** 2375 * Number of clients connected to the service. 2376 */ 2377 public int clientCount; 2378 2379 /** 2380 * Number of times the service's process has crashed while the service 2381 * is running. 2382 */ 2383 public int crashCount; 2384 2385 /** 2386 * The time when there was last activity in the service (either 2387 * explicit requests to start it or clients binding to it). This 2388 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2389 */ 2390 public long lastActivityTime; 2391 2392 /** 2393 * If non-zero, this service is not currently running, but scheduled to 2394 * restart at the given time. 2395 */ 2396 public long restarting; 2397 2398 /** 2399 * Bit for {@link #flags}: set if this service has been 2400 * explicitly started. 2401 */ 2402 public static final int FLAG_STARTED = 1<<0; 2403 2404 /** 2405 * Bit for {@link #flags}: set if the service has asked to 2406 * run as a foreground process. 2407 */ 2408 public static final int FLAG_FOREGROUND = 1<<1; 2409 2410 /** 2411 * Bit for {@link #flags}: set if the service is running in a 2412 * core system process. 2413 */ 2414 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2415 2416 /** 2417 * Bit for {@link #flags}: set if the service is running in a 2418 * persistent process. 2419 */ 2420 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2421 2422 /** 2423 * Running flags. 2424 */ 2425 public int flags; 2426 2427 /** 2428 * For special services that are bound to by system code, this is 2429 * the package that holds the binding. 2430 */ 2431 public String clientPackage; 2432 2433 /** 2434 * For special services that are bound to by system code, this is 2435 * a string resource providing a user-visible label for who the 2436 * client is. 2437 */ 2438 public int clientLabel; 2439 2440 public RunningServiceInfo() { 2441 } 2442 2443 public int describeContents() { 2444 return 0; 2445 } 2446 2447 public void writeToParcel(Parcel dest, int flags) { 2448 ComponentName.writeToParcel(service, dest); 2449 dest.writeInt(pid); 2450 dest.writeInt(uid); 2451 dest.writeString(process); 2452 dest.writeInt(foreground ? 1 : 0); 2453 dest.writeLong(activeSince); 2454 dest.writeInt(started ? 1 : 0); 2455 dest.writeInt(clientCount); 2456 dest.writeInt(crashCount); 2457 dest.writeLong(lastActivityTime); 2458 dest.writeLong(restarting); 2459 dest.writeInt(this.flags); 2460 dest.writeString(clientPackage); 2461 dest.writeInt(clientLabel); 2462 } 2463 2464 public void readFromParcel(Parcel source) { 2465 service = ComponentName.readFromParcel(source); 2466 pid = source.readInt(); 2467 uid = source.readInt(); 2468 process = source.readString(); 2469 foreground = source.readInt() != 0; 2470 activeSince = source.readLong(); 2471 started = source.readInt() != 0; 2472 clientCount = source.readInt(); 2473 crashCount = source.readInt(); 2474 lastActivityTime = source.readLong(); 2475 restarting = source.readLong(); 2476 flags = source.readInt(); 2477 clientPackage = source.readString(); 2478 clientLabel = source.readInt(); 2479 } 2480 2481 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2482 public RunningServiceInfo createFromParcel(Parcel source) { 2483 return new RunningServiceInfo(source); 2484 } 2485 public RunningServiceInfo[] newArray(int size) { 2486 return new RunningServiceInfo[size]; 2487 } 2488 }; 2489 2490 private RunningServiceInfo(Parcel source) { 2491 readFromParcel(source); 2492 } 2493 } 2494 2495 /** 2496 * Return a list of the services that are currently running. 2497 * 2498 * <p><b>Note: this method is only intended for debugging or implementing 2499 * service management type user interfaces.</b></p> 2500 * 2501 * @param maxNum The maximum number of entries to return in the list. The 2502 * actual number returned may be smaller, depending on how many services 2503 * are running. 2504 * 2505 * @return Returns a list of RunningServiceInfo records describing each of 2506 * the running tasks. 2507 */ 2508 public List<RunningServiceInfo> getRunningServices(int maxNum) 2509 throws SecurityException { 2510 try { 2511 return getService() 2512 .getServices(maxNum, 0); 2513 } catch (RemoteException e) { 2514 throw e.rethrowFromSystemServer(); 2515 } 2516 } 2517 2518 /** 2519 * Returns a PendingIntent you can start to show a control panel for the 2520 * given running service. If the service does not have a control panel, 2521 * null is returned. 2522 */ 2523 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2524 throws SecurityException { 2525 try { 2526 return getService() 2527 .getRunningServiceControlPanel(service); 2528 } catch (RemoteException e) { 2529 throw e.rethrowFromSystemServer(); 2530 } 2531 } 2532 2533 /** 2534 * Information you can retrieve about the available memory through 2535 * {@link ActivityManager#getMemoryInfo}. 2536 */ 2537 public static class MemoryInfo implements Parcelable { 2538 /** 2539 * The available memory on the system. This number should not 2540 * be considered absolute: due to the nature of the kernel, a significant 2541 * portion of this memory is actually in use and needed for the overall 2542 * system to run well. 2543 */ 2544 public long availMem; 2545 2546 /** 2547 * The total memory accessible by the kernel. This is basically the 2548 * RAM size of the device, not including below-kernel fixed allocations 2549 * like DMA buffers, RAM for the baseband CPU, etc. 2550 */ 2551 public long totalMem; 2552 2553 /** 2554 * The threshold of {@link #availMem} at which we consider memory to be 2555 * low and start killing background services and other non-extraneous 2556 * processes. 2557 */ 2558 public long threshold; 2559 2560 /** 2561 * Set to true if the system considers itself to currently be in a low 2562 * memory situation. 2563 */ 2564 public boolean lowMemory; 2565 2566 /** @hide */ 2567 public long hiddenAppThreshold; 2568 /** @hide */ 2569 public long secondaryServerThreshold; 2570 /** @hide */ 2571 public long visibleAppThreshold; 2572 /** @hide */ 2573 public long foregroundAppThreshold; 2574 2575 public MemoryInfo() { 2576 } 2577 2578 public int describeContents() { 2579 return 0; 2580 } 2581 2582 public void writeToParcel(Parcel dest, int flags) { 2583 dest.writeLong(availMem); 2584 dest.writeLong(totalMem); 2585 dest.writeLong(threshold); 2586 dest.writeInt(lowMemory ? 1 : 0); 2587 dest.writeLong(hiddenAppThreshold); 2588 dest.writeLong(secondaryServerThreshold); 2589 dest.writeLong(visibleAppThreshold); 2590 dest.writeLong(foregroundAppThreshold); 2591 } 2592 2593 public void readFromParcel(Parcel source) { 2594 availMem = source.readLong(); 2595 totalMem = source.readLong(); 2596 threshold = source.readLong(); 2597 lowMemory = source.readInt() != 0; 2598 hiddenAppThreshold = source.readLong(); 2599 secondaryServerThreshold = source.readLong(); 2600 visibleAppThreshold = source.readLong(); 2601 foregroundAppThreshold = source.readLong(); 2602 } 2603 2604 public static final Creator<MemoryInfo> CREATOR 2605 = new Creator<MemoryInfo>() { 2606 public MemoryInfo createFromParcel(Parcel source) { 2607 return new MemoryInfo(source); 2608 } 2609 public MemoryInfo[] newArray(int size) { 2610 return new MemoryInfo[size]; 2611 } 2612 }; 2613 2614 private MemoryInfo(Parcel source) { 2615 readFromParcel(source); 2616 } 2617 } 2618 2619 /** 2620 * Return general information about the memory state of the system. This 2621 * can be used to help decide how to manage your own memory, though note 2622 * that polling is not recommended and 2623 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2624 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2625 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2626 * level of your process as needed, which gives a better hint for how to 2627 * manage its memory. 2628 */ 2629 public void getMemoryInfo(MemoryInfo outInfo) { 2630 try { 2631 getService().getMemoryInfo(outInfo); 2632 } catch (RemoteException e) { 2633 throw e.rethrowFromSystemServer(); 2634 } 2635 } 2636 2637 /** 2638 * Information you can retrieve about an ActivityStack in the system. 2639 * @hide 2640 */ 2641 public static class StackInfo implements Parcelable { 2642 public int stackId; 2643 public Rect bounds = new Rect(); 2644 public int[] taskIds; 2645 public String[] taskNames; 2646 public Rect[] taskBounds; 2647 public int[] taskUserIds; 2648 public ComponentName topActivity; 2649 public int displayId; 2650 public int userId; 2651 public boolean visible; 2652 // Index of the stack in the display's stack list, can be used for comparison of stack order 2653 public int position; 2654 2655 @Override 2656 public int describeContents() { 2657 return 0; 2658 } 2659 2660 @Override 2661 public void writeToParcel(Parcel dest, int flags) { 2662 dest.writeInt(stackId); 2663 dest.writeInt(bounds.left); 2664 dest.writeInt(bounds.top); 2665 dest.writeInt(bounds.right); 2666 dest.writeInt(bounds.bottom); 2667 dest.writeIntArray(taskIds); 2668 dest.writeStringArray(taskNames); 2669 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2670 dest.writeInt(boundsCount); 2671 for (int i = 0; i < boundsCount; i++) { 2672 dest.writeInt(taskBounds[i].left); 2673 dest.writeInt(taskBounds[i].top); 2674 dest.writeInt(taskBounds[i].right); 2675 dest.writeInt(taskBounds[i].bottom); 2676 } 2677 dest.writeIntArray(taskUserIds); 2678 dest.writeInt(displayId); 2679 dest.writeInt(userId); 2680 dest.writeInt(visible ? 1 : 0); 2681 dest.writeInt(position); 2682 if (topActivity != null) { 2683 dest.writeInt(1); 2684 topActivity.writeToParcel(dest, 0); 2685 } else { 2686 dest.writeInt(0); 2687 } 2688 } 2689 2690 public void readFromParcel(Parcel source) { 2691 stackId = source.readInt(); 2692 bounds = new Rect( 2693 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2694 taskIds = source.createIntArray(); 2695 taskNames = source.createStringArray(); 2696 final int boundsCount = source.readInt(); 2697 if (boundsCount > 0) { 2698 taskBounds = new Rect[boundsCount]; 2699 for (int i = 0; i < boundsCount; i++) { 2700 taskBounds[i] = new Rect(); 2701 taskBounds[i].set( 2702 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2703 } 2704 } else { 2705 taskBounds = null; 2706 } 2707 taskUserIds = source.createIntArray(); 2708 displayId = source.readInt(); 2709 userId = source.readInt(); 2710 visible = source.readInt() > 0; 2711 position = source.readInt(); 2712 if (source.readInt() > 0) { 2713 topActivity = ComponentName.readFromParcel(source); 2714 } 2715 } 2716 2717 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2718 @Override 2719 public StackInfo createFromParcel(Parcel source) { 2720 return new StackInfo(source); 2721 } 2722 @Override 2723 public StackInfo[] newArray(int size) { 2724 return new StackInfo[size]; 2725 } 2726 }; 2727 2728 public StackInfo() { 2729 } 2730 2731 private StackInfo(Parcel source) { 2732 readFromParcel(source); 2733 } 2734 2735 public String toString(String prefix) { 2736 StringBuilder sb = new StringBuilder(256); 2737 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2738 sb.append(" bounds="); sb.append(bounds.toShortString()); 2739 sb.append(" displayId="); sb.append(displayId); 2740 sb.append(" userId="); sb.append(userId); 2741 sb.append("\n"); 2742 prefix = prefix + " "; 2743 for (int i = 0; i < taskIds.length; ++i) { 2744 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2745 sb.append(": "); sb.append(taskNames[i]); 2746 if (taskBounds != null) { 2747 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2748 } 2749 sb.append(" userId=").append(taskUserIds[i]); 2750 sb.append(" visible=").append(visible); 2751 if (topActivity != null) { 2752 sb.append(" topActivity=").append(topActivity); 2753 } 2754 sb.append("\n"); 2755 } 2756 return sb.toString(); 2757 } 2758 2759 @Override 2760 public String toString() { 2761 return toString(""); 2762 } 2763 } 2764 2765 /** 2766 * @hide 2767 */ 2768 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2769 try { 2770 return getService().clearApplicationUserData(packageName, 2771 observer, UserHandle.myUserId()); 2772 } catch (RemoteException e) { 2773 throw e.rethrowFromSystemServer(); 2774 } 2775 } 2776 2777 /** 2778 * Permits an application to erase its own data from disk. This is equivalent to 2779 * the user choosing to clear the app's data from within the device settings UI. It 2780 * erases all dynamic data associated with the app -- its private data and data in its 2781 * private area on external storage -- but does not remove the installed application 2782 * itself, nor any OBB files. 2783 * 2784 * @return {@code true} if the application successfully requested that the application's 2785 * data be erased; {@code false} otherwise. 2786 */ 2787 public boolean clearApplicationUserData() { 2788 return clearApplicationUserData(mContext.getPackageName(), null); 2789 } 2790 2791 2792 /** 2793 * Permits an application to get the persistent URI permissions granted to another. 2794 * 2795 * <p>Typically called by Settings. 2796 * 2797 * @param packageName application to look for the granted permissions 2798 * @return list of granted URI permissions 2799 * 2800 * @hide 2801 */ 2802 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2803 try { 2804 return getService().getGrantedUriPermissions(packageName, 2805 UserHandle.myUserId()); 2806 } catch (RemoteException e) { 2807 throw e.rethrowFromSystemServer(); 2808 } 2809 } 2810 2811 /** 2812 * Permits an application to clear the persistent URI permissions granted to another. 2813 * 2814 * <p>Typically called by Settings. 2815 * 2816 * @param packageName application to clear its granted permissions 2817 * 2818 * @hide 2819 */ 2820 public void clearGrantedUriPermissions(String packageName) { 2821 try { 2822 getService().clearGrantedUriPermissions(packageName, 2823 UserHandle.myUserId()); 2824 } catch (RemoteException e) { 2825 throw e.rethrowFromSystemServer(); 2826 } 2827 } 2828 2829 /** 2830 * Information you can retrieve about any processes that are in an error condition. 2831 */ 2832 public static class ProcessErrorStateInfo implements Parcelable { 2833 /** 2834 * Condition codes 2835 */ 2836 public static final int NO_ERROR = 0; 2837 public static final int CRASHED = 1; 2838 public static final int NOT_RESPONDING = 2; 2839 2840 /** 2841 * The condition that the process is in. 2842 */ 2843 public int condition; 2844 2845 /** 2846 * The process name in which the crash or error occurred. 2847 */ 2848 public String processName; 2849 2850 /** 2851 * The pid of this process; 0 if none 2852 */ 2853 public int pid; 2854 2855 /** 2856 * The kernel user-ID that has been assigned to this process; 2857 * currently this is not a unique ID (multiple applications can have 2858 * the same uid). 2859 */ 2860 public int uid; 2861 2862 /** 2863 * The activity name associated with the error, if known. May be null. 2864 */ 2865 public String tag; 2866 2867 /** 2868 * A short message describing the error condition. 2869 */ 2870 public String shortMsg; 2871 2872 /** 2873 * A long message describing the error condition. 2874 */ 2875 public String longMsg; 2876 2877 /** 2878 * The stack trace where the error originated. May be null. 2879 */ 2880 public String stackTrace; 2881 2882 /** 2883 * to be deprecated: This value will always be null. 2884 */ 2885 public byte[] crashData = null; 2886 2887 public ProcessErrorStateInfo() { 2888 } 2889 2890 @Override 2891 public int describeContents() { 2892 return 0; 2893 } 2894 2895 @Override 2896 public void writeToParcel(Parcel dest, int flags) { 2897 dest.writeInt(condition); 2898 dest.writeString(processName); 2899 dest.writeInt(pid); 2900 dest.writeInt(uid); 2901 dest.writeString(tag); 2902 dest.writeString(shortMsg); 2903 dest.writeString(longMsg); 2904 dest.writeString(stackTrace); 2905 } 2906 2907 public void readFromParcel(Parcel source) { 2908 condition = source.readInt(); 2909 processName = source.readString(); 2910 pid = source.readInt(); 2911 uid = source.readInt(); 2912 tag = source.readString(); 2913 shortMsg = source.readString(); 2914 longMsg = source.readString(); 2915 stackTrace = source.readString(); 2916 } 2917 2918 public static final Creator<ProcessErrorStateInfo> CREATOR = 2919 new Creator<ProcessErrorStateInfo>() { 2920 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2921 return new ProcessErrorStateInfo(source); 2922 } 2923 public ProcessErrorStateInfo[] newArray(int size) { 2924 return new ProcessErrorStateInfo[size]; 2925 } 2926 }; 2927 2928 private ProcessErrorStateInfo(Parcel source) { 2929 readFromParcel(source); 2930 } 2931 } 2932 2933 /** 2934 * Returns a list of any processes that are currently in an error condition. The result 2935 * will be null if all processes are running properly at this time. 2936 * 2937 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2938 * current error conditions (it will not return an empty list). This list ordering is not 2939 * specified. 2940 */ 2941 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2942 try { 2943 return getService().getProcessesInErrorState(); 2944 } catch (RemoteException e) { 2945 throw e.rethrowFromSystemServer(); 2946 } 2947 } 2948 2949 /** 2950 * Information you can retrieve about a running process. 2951 */ 2952 public static class RunningAppProcessInfo implements Parcelable { 2953 /** 2954 * The name of the process that this object is associated with 2955 */ 2956 public String processName; 2957 2958 /** 2959 * The pid of this process; 0 if none 2960 */ 2961 public int pid; 2962 2963 /** 2964 * The user id of this process. 2965 */ 2966 public int uid; 2967 2968 /** 2969 * All packages that have been loaded into the process. 2970 */ 2971 public String pkgList[]; 2972 2973 /** 2974 * Constant for {@link #flags}: this is an app that is unable to 2975 * correctly save its state when going to the background, 2976 * so it can not be killed while in the background. 2977 * @hide 2978 */ 2979 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2980 2981 /** 2982 * Constant for {@link #flags}: this process is associated with a 2983 * persistent system app. 2984 * @hide 2985 */ 2986 public static final int FLAG_PERSISTENT = 1<<1; 2987 2988 /** 2989 * Constant for {@link #flags}: this process is associated with a 2990 * persistent system app. 2991 * @hide 2992 */ 2993 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2994 2995 /** 2996 * Flags of information. May be any of 2997 * {@link #FLAG_CANT_SAVE_STATE}. 2998 * @hide 2999 */ 3000 public int flags; 3001 3002 /** 3003 * Last memory trim level reported to the process: corresponds to 3004 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 3005 * ComponentCallbacks2.onTrimMemory(int)}. 3006 */ 3007 public int lastTrimLevel; 3008 3009 /** 3010 * Constant for {@link #importance}: This process is running the 3011 * foreground UI; that is, it is the thing currently at the top of the screen 3012 * that the user is interacting with. 3013 */ 3014 public static final int IMPORTANCE_FOREGROUND = 100; 3015 3016 /** 3017 * Constant for {@link #importance}: This process is running a foreground 3018 * service, for example to perform music playback even while the user is 3019 * not immediately in the app. This generally indicates that the process 3020 * is doing something the user actively cares about. 3021 */ 3022 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3023 3024 /** 3025 * Constant for {@link #importance}: This process is running the foreground 3026 * UI, but the device is asleep so it is not visible to the user. This means 3027 * the user is not really aware of the process, because they can not see or 3028 * interact with it, but it is quite important because it what they expect to 3029 * return to once unlocking the device. 3030 */ 3031 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3032 3033 /** 3034 * Constant for {@link #importance}: This process is running something 3035 * that is actively visible to the user, though not in the immediate 3036 * foreground. This may be running a window that is behind the current 3037 * foreground (so paused and with its state saved, not interacting with 3038 * the user, but visible to them to some degree); it may also be running 3039 * other services under the system's control that it inconsiders important. 3040 */ 3041 public static final int IMPORTANCE_VISIBLE = 200; 3042 3043 /** 3044 * Constant for {@link #importance}: This process is not something the user 3045 * is directly aware of, but is otherwise perceptable to them to some degree. 3046 */ 3047 public static final int IMPORTANCE_PERCEPTIBLE = 130; 3048 3049 /** 3050 * Constant for {@link #importance}: This process is running an 3051 * application that can not save its state, and thus can't be killed 3052 * while in the background. 3053 * @hide 3054 */ 3055 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 3056 3057 /** 3058 * Constant for {@link #importance}: This process is contains services 3059 * that should remain running. These are background services apps have 3060 * started, not something the user is aware of, so they may be killed by 3061 * the system relatively freely (though it is generally desired that they 3062 * stay running as long as they want to). 3063 */ 3064 public static final int IMPORTANCE_SERVICE = 300; 3065 3066 /** 3067 * Constant for {@link #importance}: This process process contains 3068 * cached code that is expendable, not actively running any app components 3069 * we care about. 3070 */ 3071 public static final int IMPORTANCE_CACHED = 400; 3072 3073 /** 3074 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3075 */ 3076 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3077 3078 /** 3079 * Constant for {@link #importance}: This process is empty of any 3080 * actively running code. 3081 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3082 */ 3083 @Deprecated 3084 public static final int IMPORTANCE_EMPTY = 500; 3085 3086 /** 3087 * Constant for {@link #importance}: This process does not exist. 3088 */ 3089 public static final int IMPORTANCE_GONE = 1000; 3090 3091 /** @hide */ 3092 public static int procStateToImportance(int procState) { 3093 if (procState == PROCESS_STATE_NONEXISTENT) { 3094 return IMPORTANCE_GONE; 3095 } else if (procState >= PROCESS_STATE_HOME) { 3096 return IMPORTANCE_CACHED; 3097 } else if (procState >= PROCESS_STATE_SERVICE) { 3098 return IMPORTANCE_SERVICE; 3099 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3100 return IMPORTANCE_CANT_SAVE_STATE; 3101 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 3102 return IMPORTANCE_PERCEPTIBLE; 3103 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3104 return IMPORTANCE_VISIBLE; 3105 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3106 return IMPORTANCE_TOP_SLEEPING; 3107 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3108 return IMPORTANCE_FOREGROUND_SERVICE; 3109 } else { 3110 return IMPORTANCE_FOREGROUND; 3111 } 3112 } 3113 3114 /** @hide */ 3115 public static int importanceToProcState(int importance) { 3116 if (importance == IMPORTANCE_GONE) { 3117 return PROCESS_STATE_NONEXISTENT; 3118 } else if (importance >= IMPORTANCE_CACHED) { 3119 return PROCESS_STATE_HOME; 3120 } else if (importance >= IMPORTANCE_SERVICE) { 3121 return PROCESS_STATE_SERVICE; 3122 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3123 return PROCESS_STATE_HEAVY_WEIGHT; 3124 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3125 return PROCESS_STATE_IMPORTANT_BACKGROUND; 3126 } else if (importance >= IMPORTANCE_VISIBLE) { 3127 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3128 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3129 return PROCESS_STATE_TOP_SLEEPING; 3130 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3131 return PROCESS_STATE_FOREGROUND_SERVICE; 3132 } else { 3133 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3134 } 3135 } 3136 3137 /** 3138 * The relative importance level that the system places on this 3139 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 3140 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, or 3141 * {@link #IMPORTANCE_CACHED}. These 3142 * constants are numbered so that "more important" values are always 3143 * smaller than "less important" values. 3144 */ 3145 public int importance; 3146 3147 /** 3148 * An additional ordering within a particular {@link #importance} 3149 * category, providing finer-grained information about the relative 3150 * utility of processes within a category. This number means nothing 3151 * except that a smaller values are more recently used (and thus 3152 * more important). Currently an LRU value is only maintained for 3153 * the {@link #IMPORTANCE_CACHED} category, though others may 3154 * be maintained in the future. 3155 */ 3156 public int lru; 3157 3158 /** 3159 * Constant for {@link #importanceReasonCode}: nothing special has 3160 * been specified for the reason for this level. 3161 */ 3162 public static final int REASON_UNKNOWN = 0; 3163 3164 /** 3165 * Constant for {@link #importanceReasonCode}: one of the application's 3166 * content providers is being used by another process. The pid of 3167 * the client process is in {@link #importanceReasonPid} and the 3168 * target provider in this process is in 3169 * {@link #importanceReasonComponent}. 3170 */ 3171 public static final int REASON_PROVIDER_IN_USE = 1; 3172 3173 /** 3174 * Constant for {@link #importanceReasonCode}: one of the application's 3175 * content providers is being used by another process. The pid of 3176 * the client process is in {@link #importanceReasonPid} and the 3177 * target provider in this process is in 3178 * {@link #importanceReasonComponent}. 3179 */ 3180 public static final int REASON_SERVICE_IN_USE = 2; 3181 3182 /** 3183 * The reason for {@link #importance}, if any. 3184 */ 3185 public int importanceReasonCode; 3186 3187 /** 3188 * For the specified values of {@link #importanceReasonCode}, this 3189 * is the process ID of the other process that is a client of this 3190 * process. This will be 0 if no other process is using this one. 3191 */ 3192 public int importanceReasonPid; 3193 3194 /** 3195 * For the specified values of {@link #importanceReasonCode}, this 3196 * is the name of the component that is being used in this process. 3197 */ 3198 public ComponentName importanceReasonComponent; 3199 3200 /** 3201 * When {@link #importanceReasonPid} is non-0, this is the importance 3202 * of the other pid. @hide 3203 */ 3204 public int importanceReasonImportance; 3205 3206 /** 3207 * Current process state, as per PROCESS_STATE_* constants. 3208 * @hide 3209 */ 3210 public int processState; 3211 3212 public RunningAppProcessInfo() { 3213 importance = IMPORTANCE_FOREGROUND; 3214 importanceReasonCode = REASON_UNKNOWN; 3215 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3216 } 3217 3218 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3219 processName = pProcessName; 3220 pid = pPid; 3221 pkgList = pArr; 3222 } 3223 3224 public int describeContents() { 3225 return 0; 3226 } 3227 3228 public void writeToParcel(Parcel dest, int flags) { 3229 dest.writeString(processName); 3230 dest.writeInt(pid); 3231 dest.writeInt(uid); 3232 dest.writeStringArray(pkgList); 3233 dest.writeInt(this.flags); 3234 dest.writeInt(lastTrimLevel); 3235 dest.writeInt(importance); 3236 dest.writeInt(lru); 3237 dest.writeInt(importanceReasonCode); 3238 dest.writeInt(importanceReasonPid); 3239 ComponentName.writeToParcel(importanceReasonComponent, dest); 3240 dest.writeInt(importanceReasonImportance); 3241 dest.writeInt(processState); 3242 } 3243 3244 public void readFromParcel(Parcel source) { 3245 processName = source.readString(); 3246 pid = source.readInt(); 3247 uid = source.readInt(); 3248 pkgList = source.readStringArray(); 3249 flags = source.readInt(); 3250 lastTrimLevel = source.readInt(); 3251 importance = source.readInt(); 3252 lru = source.readInt(); 3253 importanceReasonCode = source.readInt(); 3254 importanceReasonPid = source.readInt(); 3255 importanceReasonComponent = ComponentName.readFromParcel(source); 3256 importanceReasonImportance = source.readInt(); 3257 processState = source.readInt(); 3258 } 3259 3260 public static final Creator<RunningAppProcessInfo> CREATOR = 3261 new Creator<RunningAppProcessInfo>() { 3262 public RunningAppProcessInfo createFromParcel(Parcel source) { 3263 return new RunningAppProcessInfo(source); 3264 } 3265 public RunningAppProcessInfo[] newArray(int size) { 3266 return new RunningAppProcessInfo[size]; 3267 } 3268 }; 3269 3270 private RunningAppProcessInfo(Parcel source) { 3271 readFromParcel(source); 3272 } 3273 } 3274 3275 /** 3276 * Returns a list of application processes installed on external media 3277 * that are running on the device. 3278 * 3279 * <p><b>Note: this method is only intended for debugging or building 3280 * a user-facing process management UI.</b></p> 3281 * 3282 * @return Returns a list of ApplicationInfo records, or null if none 3283 * This list ordering is not specified. 3284 * @hide 3285 */ 3286 public List<ApplicationInfo> getRunningExternalApplications() { 3287 try { 3288 return getService().getRunningExternalApplications(); 3289 } catch (RemoteException e) { 3290 throw e.rethrowFromSystemServer(); 3291 } 3292 } 3293 3294 /** 3295 * Sets the memory trim mode for a process and schedules a memory trim operation. 3296 * 3297 * <p><b>Note: this method is only intended for testing framework.</b></p> 3298 * 3299 * @return Returns true if successful. 3300 * @hide 3301 */ 3302 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3303 try { 3304 return getService().setProcessMemoryTrimLevel(process, userId, 3305 level); 3306 } catch (RemoteException e) { 3307 throw e.rethrowFromSystemServer(); 3308 } 3309 } 3310 3311 /** 3312 * Returns a list of application processes that are running on the device. 3313 * 3314 * <p><b>Note: this method is only intended for debugging or building 3315 * a user-facing process management UI.</b></p> 3316 * 3317 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3318 * running processes (it will not return an empty list). This list ordering is not 3319 * specified. 3320 */ 3321 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3322 try { 3323 return getService().getRunningAppProcesses(); 3324 } catch (RemoteException e) { 3325 throw e.rethrowFromSystemServer(); 3326 } 3327 } 3328 3329 /** 3330 * Return the importance of a given package name, based on the processes that are 3331 * currently running. The return value is one of the importance constants defined 3332 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3333 * processes that this package has code running inside of. If there are no processes 3334 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3335 * @hide 3336 */ 3337 @SystemApi @TestApi 3338 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3339 public int getPackageImportance(String packageName) { 3340 try { 3341 int procState = getService().getPackageProcessState(packageName, 3342 mContext.getOpPackageName()); 3343 return RunningAppProcessInfo.procStateToImportance(procState); 3344 } catch (RemoteException e) { 3345 throw e.rethrowFromSystemServer(); 3346 } 3347 } 3348 3349 /** 3350 * Callback to get reports about changes to the importance of a uid. Use with 3351 * {@link #addOnUidImportanceListener}. 3352 * @hide 3353 */ 3354 @SystemApi @TestApi 3355 public interface OnUidImportanceListener { 3356 /** 3357 * The importance if a given uid has changed. Will be one of the importance 3358 * values in {@link RunningAppProcessInfo}; 3359 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3360 * when the uid is no longer running at all. This callback will happen on a thread 3361 * from a thread pool, not the main UI thread. 3362 * @param uid The uid whose importance has changed. 3363 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3364 */ 3365 void onUidImportance(int uid, int importance); 3366 } 3367 3368 /** 3369 * Start monitoring changes to the imoportance of uids running in the system. 3370 * @param listener The listener callback that will receive change reports. 3371 * @param importanceCutpoint The level of importance in which the caller is interested 3372 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3373 * is used here, you will receive a call each time a uids importance transitions between 3374 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3375 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3376 * 3377 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3378 * permission to use this feature.</p> 3379 * 3380 * @throws IllegalArgumentException If the listener is already registered. 3381 * @throws SecurityException If the caller does not hold 3382 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3383 * @hide 3384 */ 3385 @SystemApi @TestApi 3386 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3387 int importanceCutpoint) { 3388 synchronized (this) { 3389 if (mImportanceListeners.containsKey(listener)) { 3390 throw new IllegalArgumentException("Listener already registered: " + listener); 3391 } 3392 // TODO: implement the cut point in the system process to avoid IPCs. 3393 UidObserver observer = new UidObserver(listener); 3394 try { 3395 getService().registerUidObserver(observer, 3396 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3397 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3398 mContext.getOpPackageName()); 3399 } catch (RemoteException e) { 3400 throw e.rethrowFromSystemServer(); 3401 } 3402 mImportanceListeners.put(listener, observer); 3403 } 3404 } 3405 3406 /** 3407 * Remove an importance listener that was previously registered with 3408 * {@link #addOnUidImportanceListener}. 3409 * 3410 * @throws IllegalArgumentException If the listener is not registered. 3411 * @hide 3412 */ 3413 @SystemApi @TestApi 3414 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3415 synchronized (this) { 3416 UidObserver observer = mImportanceListeners.remove(listener); 3417 if (observer == null) { 3418 throw new IllegalArgumentException("Listener not registered: " + listener); 3419 } 3420 try { 3421 getService().unregisterUidObserver(observer); 3422 } catch (RemoteException e) { 3423 throw e.rethrowFromSystemServer(); 3424 } 3425 } 3426 } 3427 3428 /** 3429 * Return global memory state information for the calling process. This 3430 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3431 * only fields that will be filled in are 3432 * {@link RunningAppProcessInfo#pid}, 3433 * {@link RunningAppProcessInfo#uid}, 3434 * {@link RunningAppProcessInfo#lastTrimLevel}, 3435 * {@link RunningAppProcessInfo#importance}, 3436 * {@link RunningAppProcessInfo#lru}, and 3437 * {@link RunningAppProcessInfo#importanceReasonCode}. 3438 */ 3439 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3440 try { 3441 getService().getMyMemoryState(outState); 3442 } catch (RemoteException e) { 3443 throw e.rethrowFromSystemServer(); 3444 } 3445 } 3446 3447 /** 3448 * Return information about the memory usage of one or more processes. 3449 * 3450 * <p><b>Note: this method is only intended for debugging or building 3451 * a user-facing process management UI.</b></p> 3452 * 3453 * @param pids The pids of the processes whose memory usage is to be 3454 * retrieved. 3455 * @return Returns an array of memory information, one for each 3456 * requested pid. 3457 */ 3458 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3459 try { 3460 return getService().getProcessMemoryInfo(pids); 3461 } catch (RemoteException e) { 3462 throw e.rethrowFromSystemServer(); 3463 } 3464 } 3465 3466 /** 3467 * @deprecated This is now just a wrapper for 3468 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3469 * is no longer available to applications because it allows them to 3470 * break other applications by removing their alarms, stopping their 3471 * services, etc. 3472 */ 3473 @Deprecated 3474 public void restartPackage(String packageName) { 3475 killBackgroundProcesses(packageName); 3476 } 3477 3478 /** 3479 * Have the system immediately kill all background processes associated 3480 * with the given package. This is the same as the kernel killing those 3481 * processes to reclaim memory; the system will take care of restarting 3482 * these processes in the future as needed. 3483 * 3484 * <p>You must hold the permission 3485 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3486 * call this method. 3487 * 3488 * @param packageName The name of the package whose processes are to 3489 * be killed. 3490 */ 3491 public void killBackgroundProcesses(String packageName) { 3492 try { 3493 getService().killBackgroundProcesses(packageName, 3494 UserHandle.myUserId()); 3495 } catch (RemoteException e) { 3496 throw e.rethrowFromSystemServer(); 3497 } 3498 } 3499 3500 /** 3501 * Kills the specified UID. 3502 * @param uid The UID to kill. 3503 * @param reason The reason for the kill. 3504 * 3505 * @hide 3506 */ 3507 @SystemApi 3508 @RequiresPermission(Manifest.permission.KILL_UID) 3509 public void killUid(int uid, String reason) { 3510 try { 3511 getService().killUid(UserHandle.getAppId(uid), 3512 UserHandle.getUserId(uid), reason); 3513 } catch (RemoteException e) { 3514 throw e.rethrowFromSystemServer(); 3515 } 3516 } 3517 3518 /** 3519 * Have the system perform a force stop of everything associated with 3520 * the given application package. All processes that share its uid 3521 * will be killed, all services it has running stopped, all activities 3522 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3523 * broadcast will be sent, so that any of its registered alarms can 3524 * be stopped, notifications removed, etc. 3525 * 3526 * <p>You must hold the permission 3527 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3528 * call this method. 3529 * 3530 * @param packageName The name of the package to be stopped. 3531 * @param userId The user for which the running package is to be stopped. 3532 * 3533 * @hide This is not available to third party applications due to 3534 * it allowing them to break other applications by stopping their 3535 * services, removing their alarms, etc. 3536 */ 3537 public void forceStopPackageAsUser(String packageName, int userId) { 3538 try { 3539 getService().forceStopPackage(packageName, userId); 3540 } catch (RemoteException e) { 3541 throw e.rethrowFromSystemServer(); 3542 } 3543 } 3544 3545 /** 3546 * @see #forceStopPackageAsUser(String, int) 3547 * @hide 3548 */ 3549 @SystemApi 3550 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3551 public void forceStopPackage(String packageName) { 3552 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3553 } 3554 3555 /** 3556 * Get the device configuration attributes. 3557 */ 3558 public ConfigurationInfo getDeviceConfigurationInfo() { 3559 try { 3560 return getService().getDeviceConfigurationInfo(); 3561 } catch (RemoteException e) { 3562 throw e.rethrowFromSystemServer(); 3563 } 3564 } 3565 3566 /** 3567 * Get the preferred density of icons for the launcher. This is used when 3568 * custom drawables are created (e.g., for shortcuts). 3569 * 3570 * @return density in terms of DPI 3571 */ 3572 public int getLauncherLargeIconDensity() { 3573 final Resources res = mContext.getResources(); 3574 final int density = res.getDisplayMetrics().densityDpi; 3575 final int sw = res.getConfiguration().smallestScreenWidthDp; 3576 3577 if (sw < 600) { 3578 // Smaller than approx 7" tablets, use the regular icon size. 3579 return density; 3580 } 3581 3582 switch (density) { 3583 case DisplayMetrics.DENSITY_LOW: 3584 return DisplayMetrics.DENSITY_MEDIUM; 3585 case DisplayMetrics.DENSITY_MEDIUM: 3586 return DisplayMetrics.DENSITY_HIGH; 3587 case DisplayMetrics.DENSITY_TV: 3588 return DisplayMetrics.DENSITY_XHIGH; 3589 case DisplayMetrics.DENSITY_HIGH: 3590 return DisplayMetrics.DENSITY_XHIGH; 3591 case DisplayMetrics.DENSITY_XHIGH: 3592 return DisplayMetrics.DENSITY_XXHIGH; 3593 case DisplayMetrics.DENSITY_XXHIGH: 3594 return DisplayMetrics.DENSITY_XHIGH * 2; 3595 default: 3596 // The density is some abnormal value. Return some other 3597 // abnormal value that is a reasonable scaling of it. 3598 return (int)((density*1.5f)+.5f); 3599 } 3600 } 3601 3602 /** 3603 * Get the preferred launcher icon size. This is used when custom drawables 3604 * are created (e.g., for shortcuts). 3605 * 3606 * @return dimensions of square icons in terms of pixels 3607 */ 3608 public int getLauncherLargeIconSize() { 3609 return getLauncherLargeIconSizeInner(mContext); 3610 } 3611 3612 static int getLauncherLargeIconSizeInner(Context context) { 3613 final Resources res = context.getResources(); 3614 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3615 final int sw = res.getConfiguration().smallestScreenWidthDp; 3616 3617 if (sw < 600) { 3618 // Smaller than approx 7" tablets, use the regular icon size. 3619 return size; 3620 } 3621 3622 final int density = res.getDisplayMetrics().densityDpi; 3623 3624 switch (density) { 3625 case DisplayMetrics.DENSITY_LOW: 3626 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3627 case DisplayMetrics.DENSITY_MEDIUM: 3628 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3629 case DisplayMetrics.DENSITY_TV: 3630 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3631 case DisplayMetrics.DENSITY_HIGH: 3632 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3633 case DisplayMetrics.DENSITY_XHIGH: 3634 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3635 case DisplayMetrics.DENSITY_XXHIGH: 3636 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3637 default: 3638 // The density is some abnormal value. Return some other 3639 // abnormal value that is a reasonable scaling of it. 3640 return (int)((size*1.5f) + .5f); 3641 } 3642 } 3643 3644 /** 3645 * Returns "true" if the user interface is currently being messed with 3646 * by a monkey. 3647 */ 3648 public static boolean isUserAMonkey() { 3649 try { 3650 return getService().isUserAMonkey(); 3651 } catch (RemoteException e) { 3652 throw e.rethrowFromSystemServer(); 3653 } 3654 } 3655 3656 /** 3657 * Returns "true" if device is running in a test harness. 3658 */ 3659 public static boolean isRunningInTestHarness() { 3660 return SystemProperties.getBoolean("ro.test_harness", false); 3661 } 3662 3663 /** 3664 * Returns the launch count of each installed package. 3665 * 3666 * @hide 3667 */ 3668 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3669 try { 3670 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3671 ServiceManager.getService("usagestats")); 3672 if (usageStatsService == null) { 3673 return new HashMap<String, Integer>(); 3674 } 3675 3676 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3677 ActivityThread.currentPackageName()); 3678 if (allPkgUsageStats == null) { 3679 return new HashMap<String, Integer>(); 3680 } 3681 3682 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3683 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3684 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3685 } 3686 3687 return launchCounts; 3688 } catch (RemoteException e) { 3689 Log.w(TAG, "Could not query launch counts", e); 3690 return new HashMap<String, Integer>(); 3691 } 3692 }*/ 3693 3694 /** @hide */ 3695 public static int checkComponentPermission(String permission, int uid, 3696 int owningUid, boolean exported) { 3697 // Root, system server get to do everything. 3698 final int appId = UserHandle.getAppId(uid); 3699 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3700 return PackageManager.PERMISSION_GRANTED; 3701 } 3702 // Isolated processes don't get any permissions. 3703 if (UserHandle.isIsolated(uid)) { 3704 return PackageManager.PERMISSION_DENIED; 3705 } 3706 // If there is a uid that owns whatever is being accessed, it has 3707 // blanket access to it regardless of the permissions it requires. 3708 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3709 return PackageManager.PERMISSION_GRANTED; 3710 } 3711 // If the target is not exported, then nobody else can get to it. 3712 if (!exported) { 3713 /* 3714 RuntimeException here = new RuntimeException("here"); 3715 here.fillInStackTrace(); 3716 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3717 here); 3718 */ 3719 return PackageManager.PERMISSION_DENIED; 3720 } 3721 if (permission == null) { 3722 return PackageManager.PERMISSION_GRANTED; 3723 } 3724 try { 3725 return AppGlobals.getPackageManager() 3726 .checkUidPermission(permission, uid); 3727 } catch (RemoteException e) { 3728 throw e.rethrowFromSystemServer(); 3729 } 3730 } 3731 3732 /** @hide */ 3733 public static int checkUidPermission(String permission, int uid) { 3734 try { 3735 return AppGlobals.getPackageManager() 3736 .checkUidPermission(permission, uid); 3737 } catch (RemoteException e) { 3738 throw e.rethrowFromSystemServer(); 3739 } 3740 } 3741 3742 /** 3743 * @hide 3744 * Helper for dealing with incoming user arguments to system service calls. 3745 * Takes care of checking permissions and converting USER_CURRENT to the 3746 * actual current user. 3747 * 3748 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3749 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3750 * @param userId The user id argument supplied by the caller -- this is the user 3751 * they want to run as. 3752 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3753 * to get a USER_ALL returned and deal with it correctly. If false, 3754 * an exception will be thrown if USER_ALL is supplied. 3755 * @param requireFull If true, the caller must hold 3756 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3757 * different user than their current process; otherwise they must hold 3758 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3759 * @param name Optional textual name of the incoming call; only for generating error messages. 3760 * @param callerPackage Optional package name of caller; only for error messages. 3761 * 3762 * @return Returns the user ID that the call should run as. Will always be a concrete 3763 * user number, unless <var>allowAll</var> is true in which case it could also be 3764 * USER_ALL. 3765 */ 3766 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3767 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3768 if (UserHandle.getUserId(callingUid) == userId) { 3769 return userId; 3770 } 3771 try { 3772 return getService().handleIncomingUser(callingPid, 3773 callingUid, userId, allowAll, requireFull, name, callerPackage); 3774 } catch (RemoteException e) { 3775 throw e.rethrowFromSystemServer(); 3776 } 3777 } 3778 3779 /** 3780 * Gets the userId of the current foreground user. Requires system permissions. 3781 * @hide 3782 */ 3783 @SystemApi 3784 public static int getCurrentUser() { 3785 UserInfo ui; 3786 try { 3787 ui = getService().getCurrentUser(); 3788 return ui != null ? ui.id : 0; 3789 } catch (RemoteException e) { 3790 throw e.rethrowFromSystemServer(); 3791 } 3792 } 3793 3794 /** 3795 * @param userid the user's id. Zero indicates the default user. 3796 * @hide 3797 */ 3798 public boolean switchUser(int userid) { 3799 try { 3800 return getService().switchUser(userid); 3801 } catch (RemoteException e) { 3802 throw e.rethrowFromSystemServer(); 3803 } 3804 } 3805 3806 /** 3807 * Logs out current current foreground user by switching to the system user and stopping the 3808 * user being switched from. 3809 * @hide 3810 */ 3811 public static void logoutCurrentUser() { 3812 int currentUser = ActivityManager.getCurrentUser(); 3813 if (currentUser != UserHandle.USER_SYSTEM) { 3814 try { 3815 getService().switchUser(UserHandle.USER_SYSTEM); 3816 getService().stopUser(currentUser, /* force= */ false, null); 3817 } catch (RemoteException e) { 3818 e.rethrowFromSystemServer(); 3819 } 3820 } 3821 } 3822 3823 /** {@hide} */ 3824 public static final int FLAG_OR_STOPPED = 1 << 0; 3825 /** {@hide} */ 3826 public static final int FLAG_AND_LOCKED = 1 << 1; 3827 /** {@hide} */ 3828 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3829 /** {@hide} */ 3830 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3831 3832 /** 3833 * Return whether the given user is actively running. This means that 3834 * the user is in the "started" state, not "stopped" -- it is currently 3835 * allowed to run code through scheduled alarms, receiving broadcasts, 3836 * etc. A started user may be either the current foreground user or a 3837 * background user; the result here does not distinguish between the two. 3838 * @param userId the user's id. Zero indicates the default user. 3839 * @hide 3840 */ 3841 public boolean isUserRunning(int userId) { 3842 try { 3843 return getService().isUserRunning(userId, 0); 3844 } catch (RemoteException e) { 3845 throw e.rethrowFromSystemServer(); 3846 } 3847 } 3848 3849 /** {@hide} */ 3850 public boolean isVrModePackageEnabled(ComponentName component) { 3851 try { 3852 return getService().isVrModePackageEnabled(component); 3853 } catch (RemoteException e) { 3854 throw e.rethrowFromSystemServer(); 3855 } 3856 } 3857 3858 /** 3859 * Perform a system dump of various state associated with the given application 3860 * package name. This call blocks while the dump is being performed, so should 3861 * not be done on a UI thread. The data will be written to the given file 3862 * descriptor as text. An application must hold the 3863 * {@link android.Manifest.permission#DUMP} permission to make this call. 3864 * @param fd The file descriptor that the dump should be written to. The file 3865 * descriptor is <em>not</em> closed by this function; the caller continues to 3866 * own it. 3867 * @param packageName The name of the package that is to be dumped. 3868 */ 3869 public void dumpPackageState(FileDescriptor fd, String packageName) { 3870 dumpPackageStateStatic(fd, packageName); 3871 } 3872 3873 /** 3874 * @hide 3875 */ 3876 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3877 FileOutputStream fout = new FileOutputStream(fd); 3878 PrintWriter pw = new FastPrintWriter(fout); 3879 dumpService(pw, fd, "package", new String[] { packageName }); 3880 pw.println(); 3881 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3882 "-a", "package", packageName }); 3883 pw.println(); 3884 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3885 pw.println(); 3886 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3887 pw.println(); 3888 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3889 pw.println(); 3890 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3891 pw.flush(); 3892 } 3893 3894 /** 3895 * @hide 3896 */ 3897 public static boolean isSystemReady() { 3898 if (!sSystemReady) { 3899 if (ActivityThread.isSystem()) { 3900 sSystemReady = 3901 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3902 } else { 3903 // Since this is being called from outside system server, system should be 3904 // ready by now. 3905 sSystemReady = true; 3906 } 3907 } 3908 return sSystemReady; 3909 } 3910 3911 /** 3912 * @hide 3913 */ 3914 public static void broadcastStickyIntent(Intent intent, int userId) { 3915 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3916 } 3917 3918 /** 3919 * Convenience for sending a sticky broadcast. For internal use only. 3920 * 3921 * @hide 3922 */ 3923 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3924 try { 3925 getService().broadcastIntent( 3926 null, intent, null, null, Activity.RESULT_OK, null, null, 3927 null /*permission*/, appOp, null, false, true, userId); 3928 } catch (RemoteException ex) { 3929 } 3930 } 3931 3932 /** 3933 * @hide 3934 */ 3935 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3936 String tag) { 3937 try { 3938 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3939 sourceUid, sourcePkg, tag); 3940 } catch (RemoteException ex) { 3941 } 3942 } 3943 3944 /** 3945 * @hide 3946 */ 3947 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3948 try { 3949 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3950 } catch (RemoteException ex) { 3951 } 3952 } 3953 3954 /** 3955 * @hide 3956 */ 3957 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3958 try { 3959 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3960 } catch (RemoteException ex) { 3961 } 3962 } 3963 3964 /** 3965 * @hide 3966 */ 3967 public static IActivityManager getService() { 3968 return IActivityManagerSingleton.get(); 3969 } 3970 3971 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3972 new Singleton<IActivityManager>() { 3973 @Override 3974 protected IActivityManager create() { 3975 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3976 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3977 return am; 3978 } 3979 }; 3980 3981 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3982 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3983 IBinder service = ServiceManager.checkService(name); 3984 if (service == null) { 3985 pw.println(" (Service not found)"); 3986 return; 3987 } 3988 TransferPipe tp = null; 3989 try { 3990 pw.flush(); 3991 tp = new TransferPipe(); 3992 tp.setBufferPrefix(" "); 3993 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3994 tp.go(fd, 10000); 3995 } catch (Throwable e) { 3996 if (tp != null) { 3997 tp.kill(); 3998 } 3999 pw.println("Failure dumping service:"); 4000 e.printStackTrace(pw); 4001 } 4002 } 4003 4004 /** 4005 * Request that the system start watching for the calling process to exceed a pss 4006 * size as given here. Once called, the system will look for any occasions where it 4007 * sees the associated process with a larger pss size and, when this happens, automatically 4008 * pull a heap dump from it and allow the user to share the data. Note that this request 4009 * continues running even if the process is killed and restarted. To remove the watch, 4010 * use {@link #clearWatchHeapLimit()}. 4011 * 4012 * <p>This API only work if the calling process has been marked as 4013 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4014 * (userdebug or eng) build.</p> 4015 * 4016 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4017 * handle heap limit reports themselves.</p> 4018 * 4019 * @param pssSize The size in bytes to set the limit at. 4020 */ 4021 public void setWatchHeapLimit(long pssSize) { 4022 try { 4023 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4024 mContext.getPackageName()); 4025 } catch (RemoteException e) { 4026 throw e.rethrowFromSystemServer(); 4027 } 4028 } 4029 4030 /** 4031 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4032 * If your package has an activity handling this action, it will be launched with the 4033 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4034 * match the activty must support this action and a MIME type of "*/*". 4035 */ 4036 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4037 4038 /** 4039 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4040 */ 4041 public void clearWatchHeapLimit() { 4042 try { 4043 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4044 } catch (RemoteException e) { 4045 throw e.rethrowFromSystemServer(); 4046 } 4047 } 4048 4049 /** 4050 * @hide 4051 */ 4052 public void startLockTaskMode(int taskId) { 4053 try { 4054 getService().startLockTaskModeById(taskId); 4055 } catch (RemoteException e) { 4056 throw e.rethrowFromSystemServer(); 4057 } 4058 } 4059 4060 /** 4061 * @hide 4062 */ 4063 public void stopLockTaskMode() { 4064 try { 4065 getService().stopLockTaskMode(); 4066 } catch (RemoteException e) { 4067 throw e.rethrowFromSystemServer(); 4068 } 4069 } 4070 4071 /** 4072 * Return whether currently in lock task mode. When in this mode 4073 * no new tasks can be created or switched to. 4074 * 4075 * @see Activity#startLockTask() 4076 * 4077 * @deprecated Use {@link #getLockTaskModeState} instead. 4078 */ 4079 @Deprecated 4080 public boolean isInLockTaskMode() { 4081 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4082 } 4083 4084 /** 4085 * Return the current state of task locking. The three possible outcomes 4086 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4087 * and {@link #LOCK_TASK_MODE_PINNED}. 4088 * 4089 * @see Activity#startLockTask() 4090 */ 4091 public int getLockTaskModeState() { 4092 try { 4093 return getService().getLockTaskModeState(); 4094 } catch (RemoteException e) { 4095 throw e.rethrowFromSystemServer(); 4096 } 4097 } 4098 4099 /** 4100 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4101 * thread can be a VR thread in a process at a time, and that thread may be subject to 4102 * restrictions on the amount of time it can run. 4103 * 4104 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4105 * method will return to normal operation, and calling this method will do nothing while 4106 * persistent VR mode is enabled. 4107 * 4108 * To reset the VR thread for an application, a tid of 0 can be passed. 4109 * 4110 * @see android.os.Process#myTid() 4111 * @param tid tid of the VR thread 4112 */ 4113 public static void setVrThread(int tid) { 4114 try { 4115 getService().setVrThread(tid); 4116 } catch (RemoteException e) { 4117 // pass 4118 } 4119 } 4120 4121 /** 4122 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4123 * beyond a single process. It requires holding the 4124 * {@link android.Manifest.permission#RESTRICTED_VR_ACCESS} permission. Only one thread can be a 4125 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4126 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4127 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4128 * persistent VR thread loses its new scheduling priority; this method must be called again to 4129 * set the persistent thread. 4130 * 4131 * To reset the persistent VR thread, a tid of 0 can be passed. 4132 * 4133 * @see android.os.Process#myTid() 4134 * @param tid tid of the VR thread 4135 * @hide 4136 */ 4137 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4138 public static void setPersistentVrThread(int tid) { 4139 try { 4140 getService().setPersistentVrThread(tid); 4141 } catch (RemoteException e) { 4142 // pass 4143 } 4144 } 4145 4146 /** 4147 * The AppTask allows you to manage your own application's tasks. 4148 * See {@link android.app.ActivityManager#getAppTasks()} 4149 */ 4150 public static class AppTask { 4151 private IAppTask mAppTaskImpl; 4152 4153 /** @hide */ 4154 public AppTask(IAppTask task) { 4155 mAppTaskImpl = task; 4156 } 4157 4158 /** 4159 * Finishes all activities in this task and removes it from the recent tasks list. 4160 */ 4161 public void finishAndRemoveTask() { 4162 try { 4163 mAppTaskImpl.finishAndRemoveTask(); 4164 } catch (RemoteException e) { 4165 throw e.rethrowFromSystemServer(); 4166 } 4167 } 4168 4169 /** 4170 * Get the RecentTaskInfo associated with this task. 4171 * 4172 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4173 */ 4174 public RecentTaskInfo getTaskInfo() { 4175 try { 4176 return mAppTaskImpl.getTaskInfo(); 4177 } catch (RemoteException e) { 4178 throw e.rethrowFromSystemServer(); 4179 } 4180 } 4181 4182 /** 4183 * Bring this task to the foreground. If it contains activities, they will be 4184 * brought to the foreground with it and their instances re-created if needed. 4185 * If it doesn't contain activities, the root activity of the task will be 4186 * re-launched. 4187 */ 4188 public void moveToFront() { 4189 try { 4190 mAppTaskImpl.moveToFront(); 4191 } catch (RemoteException e) { 4192 throw e.rethrowFromSystemServer(); 4193 } 4194 } 4195 4196 /** 4197 * Start an activity in this task. Brings the task to the foreground. If this task 4198 * is not currently active (that is, its id < 0), then a new activity for the given 4199 * Intent will be launched as the root of the task and the task brought to the 4200 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4201 * an activity to launch in a new task, then a new activity for the given Intent will 4202 * be launched on top of the task and the task brought to the foreground. If this 4203 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4204 * or would otherwise be launched in to a new task, then the activity not launched but 4205 * this task be brought to the foreground and a new intent delivered to the top 4206 * activity if appropriate. 4207 * 4208 * <p>In other words, you generally want to use an Intent here that does not specify 4209 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4210 * and let the system do the right thing.</p> 4211 * 4212 * @param intent The Intent describing the new activity to be launched on the task. 4213 * @param options Optional launch options. 4214 * 4215 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4216 */ 4217 public void startActivity(Context context, Intent intent, Bundle options) { 4218 ActivityThread thread = ActivityThread.currentActivityThread(); 4219 thread.getInstrumentation().execStartActivityFromAppTask(context, 4220 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4221 } 4222 4223 /** 4224 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4225 * Intent of this AppTask. 4226 * 4227 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4228 * be set; otherwise, it will be cleared. 4229 */ 4230 public void setExcludeFromRecents(boolean exclude) { 4231 try { 4232 mAppTaskImpl.setExcludeFromRecents(exclude); 4233 } catch (RemoteException e) { 4234 throw e.rethrowFromSystemServer(); 4235 } 4236 } 4237 } 4238} 4239