ActivityManager.java revision 35e3f53a30588b79e0309fdbeef29a8c18eef65d
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 /** @hide User operation call: success! */ 409 public static final int USER_OP_SUCCESS = 0; 410 411 /** @hide User operation call: given user id is not known. */ 412 public static final int USER_OP_UNKNOWN_USER = -1; 413 414 /** @hide User operation call: given user id is the current user, can't be stopped. */ 415 public static final int USER_OP_IS_CURRENT = -2; 416 417 /** @hide User operation call: system user can't be stopped. */ 418 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 419 420 /** @hide User operation call: one of related users cannot be stopped. */ 421 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 422 423 /** @hide Not a real process state. */ 424 public static final int PROCESS_STATE_UNKNOWN = -1; 425 426 /** @hide Process is a persistent system process. */ 427 public static final int PROCESS_STATE_PERSISTENT = 0; 428 429 /** @hide Process is a persistent system process and is doing UI. */ 430 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 431 432 /** @hide Process is hosting the current top activities. Note that this covers 433 * all activities that are visible to the user. */ 434 public static final int PROCESS_STATE_TOP = 2; 435 436 /** @hide Process is hosting a foreground service due to a system binding. */ 437 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 438 439 /** @hide Process is hosting a foreground service. */ 440 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 441 442 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 443 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 444 445 /** @hide Process is important to the user, and something they are aware of. */ 446 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 447 448 /** @hide Process is important to the user, but not something they are aware of. */ 449 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 450 451 /** @hide Process is in the background running a backup/restore operation. */ 452 public static final int PROCESS_STATE_BACKUP = 8; 453 454 /** @hide Process is in the background, but it can't restore its state so we want 455 * to try to avoid killing it. */ 456 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 457 458 /** @hide Process is in the background running a service. Unlike oom_adj, this level 459 * is used for both the normal running in background state and the executing 460 * operations state. */ 461 public static final int PROCESS_STATE_SERVICE = 10; 462 463 /** @hide Process is in the background running a receiver. Note that from the 464 * perspective of oom_adj receivers run at a higher foreground level, but for our 465 * prioritization here that is not necessary and putting them below services means 466 * many fewer changes in some process states as they receive broadcasts. */ 467 public static final int PROCESS_STATE_RECEIVER = 11; 468 469 /** @hide Process is in the background but hosts the home activity. */ 470 public static final int PROCESS_STATE_HOME = 12; 471 472 /** @hide Process is in the background but hosts the last shown activity. */ 473 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 474 475 /** @hide Process is being cached for later use and contains activities. */ 476 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 477 478 /** @hide Process is being cached for later use and is a client of another cached 479 * process that contains activities. */ 480 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 481 482 /** @hide Process is being cached for later use and is empty. */ 483 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 484 485 /** @hide Process does not exist. */ 486 public static final int PROCESS_STATE_NONEXISTENT = 17; 487 488 /** @hide The lowest process state number */ 489 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 490 491 /** @hide The highest process state number */ 492 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 493 494 /** @hide Should this process state be considered a background state? */ 495 public static final boolean isProcStateBackground(int procState) { 496 return procState >= PROCESS_STATE_BACKUP; 497 } 498 499 /** @hide requestType for assist context: only basic information. */ 500 public static final int ASSIST_CONTEXT_BASIC = 0; 501 502 /** @hide requestType for assist context: generate full AssistStructure. */ 503 public static final int ASSIST_CONTEXT_FULL = 1; 504 505 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 506 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 507 508 /** @hide Flag for registerUidObserver: report changes in process state. */ 509 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 510 511 /** @hide Flag for registerUidObserver: report uid gone. */ 512 public static final int UID_OBSERVER_GONE = 1<<1; 513 514 /** @hide Flag for registerUidObserver: report uid has become idle. */ 515 public static final int UID_OBSERVER_IDLE = 1<<2; 516 517 /** @hide Flag for registerUidObserver: report uid has become active. */ 518 public static final int UID_OBSERVER_ACTIVE = 1<<3; 519 520 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 521 public static final int APP_START_MODE_NORMAL = 0; 522 523 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 524 public static final int APP_START_MODE_DELAYED = 1; 525 526 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 527 * rigid errors (throwing exception). */ 528 public static final int APP_START_MODE_DELAYED_RIGID = 2; 529 530 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 531 * launches; this is the mode for ephemeral apps. */ 532 public static final int APP_START_MODE_DISABLED = 3; 533 534 /** 535 * Lock task mode is not active. 536 */ 537 public static final int LOCK_TASK_MODE_NONE = 0; 538 539 /** 540 * Full lock task mode is active. 541 */ 542 public static final int LOCK_TASK_MODE_LOCKED = 1; 543 544 /** 545 * App pinning mode is active. 546 */ 547 public static final int LOCK_TASK_MODE_PINNED = 2; 548 549 Point mAppTaskThumbnailSize; 550 551 /*package*/ ActivityManager(Context context, Handler handler) { 552 mContext = context; 553 } 554 555 /** 556 * Screen compatibility mode: the application most always run in 557 * compatibility mode. 558 * @hide 559 */ 560 public static final int COMPAT_MODE_ALWAYS = -1; 561 562 /** 563 * Screen compatibility mode: the application can never run in 564 * compatibility mode. 565 * @hide 566 */ 567 public static final int COMPAT_MODE_NEVER = -2; 568 569 /** 570 * Screen compatibility mode: unknown. 571 * @hide 572 */ 573 public static final int COMPAT_MODE_UNKNOWN = -3; 574 575 /** 576 * Screen compatibility mode: the application currently has compatibility 577 * mode disabled. 578 * @hide 579 */ 580 public static final int COMPAT_MODE_DISABLED = 0; 581 582 /** 583 * Screen compatibility mode: the application currently has compatibility 584 * mode enabled. 585 * @hide 586 */ 587 public static final int COMPAT_MODE_ENABLED = 1; 588 589 /** 590 * Screen compatibility mode: request to toggle the application's 591 * compatibility mode. 592 * @hide 593 */ 594 public static final int COMPAT_MODE_TOGGLE = 2; 595 596 /** @hide */ 597 public static class StackId { 598 /** Invalid stack ID. */ 599 public static final int INVALID_STACK_ID = -1; 600 601 /** First static stack ID. */ 602 public static final int FIRST_STATIC_STACK_ID = 0; 603 604 /** Home activity stack ID. */ 605 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 606 607 /** ID of stack where fullscreen activities are normally launched into. */ 608 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 609 610 /** ID of stack where freeform/resized activities are normally launched into. */ 611 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 612 613 /** ID of stack that occupies a dedicated region of the screen. */ 614 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 615 616 /** ID of stack that always on top (always visible) when it exist. */ 617 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 618 619 /** ID of stack that contains the Recents activity. */ 620 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 621 622 /** ID of stack that contains activities launched by the assistant. */ 623 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 624 625 /** Last static stack stack ID. */ 626 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 627 628 /** Start of ID range used by stacks that are created dynamically. */ 629 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 630 631 public static boolean isStaticStack(int stackId) { 632 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 633 } 634 635 public static boolean isDynamicStack(int stackId) { 636 return stackId >= FIRST_DYNAMIC_STACK_ID; 637 } 638 639 /** 640 * Returns true if the activities contained in the input stack display a shadow around 641 * their border. 642 */ 643 public static boolean hasWindowShadow(int stackId) { 644 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 645 } 646 647 /** 648 * Returns true if the activities contained in the input stack display a decor view. 649 */ 650 public static boolean hasWindowDecor(int stackId) { 651 return stackId == FREEFORM_WORKSPACE_STACK_ID; 652 } 653 654 /** 655 * Returns true if the tasks contained in the stack can be resized independently of the 656 * stack. 657 */ 658 public static boolean isTaskResizeAllowed(int stackId) { 659 return stackId == FREEFORM_WORKSPACE_STACK_ID; 660 } 661 662 /** Returns true if the task bounds should persist across power cycles. */ 663 public static boolean persistTaskBounds(int stackId) { 664 return stackId == FREEFORM_WORKSPACE_STACK_ID; 665 } 666 667 /** 668 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 669 */ 670 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 671 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 672 } 673 674 /** 675 * Returns true if we try to maintain focus in the current stack when the top activity 676 * finishes. 677 */ 678 public static boolean keepFocusInStackIfPossible(int stackId) { 679 return stackId == FREEFORM_WORKSPACE_STACK_ID 680 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 681 } 682 683 /** 684 * Returns true if Stack size is affected by the docked stack changing size. 685 */ 686 public static boolean isResizeableByDockedStack(int stackId) { 687 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 688 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 689 } 690 691 /** 692 * Returns true if the size of tasks in the input stack are affected by the docked stack 693 * changing size. 694 */ 695 public static boolean isTaskResizeableByDockedStack(int stackId) { 696 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 697 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 698 && stackId != ASSISTANT_STACK_ID; 699 } 700 701 /** 702 * Returns true if the input stack is affected by drag resizing. 703 */ 704 public static boolean isStackAffectedByDragResizing(int stackId) { 705 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 706 && stackId != ASSISTANT_STACK_ID; 707 } 708 709 /** 710 * Returns true if the windows of tasks being moved to the target stack from the source 711 * stack should be replaced, meaning that window manager will keep the old window around 712 * until the new is ready. 713 */ 714 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 715 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 716 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 717 } 718 719 /** 720 * Return whether a stackId is a stack containing floating windows. Floating windows 721 * are laid out differently as they are allowed to extend past the display bounds 722 * without overscan insets. 723 */ 724 public static boolean tasksAreFloating(int stackId) { 725 return stackId == FREEFORM_WORKSPACE_STACK_ID 726 || stackId == PINNED_STACK_ID; 727 } 728 729 /** 730 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 731 * are generally fullscreen stacks. 732 */ 733 public static boolean isBackdropToTranslucentActivity(int stackId) { 734 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 735 || stackId == ASSISTANT_STACK_ID; 736 } 737 738 /** 739 * Returns true if animation specs should be constructed for app transition that moves 740 * the task to the specified stack. 741 */ 742 public static boolean useAnimationSpecForAppTransition(int stackId) { 743 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 744 // reboots. 745 return stackId == FREEFORM_WORKSPACE_STACK_ID 746 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 747 || stackId == ASSISTANT_STACK_ID 748 || stackId == DOCKED_STACK_ID 749 || stackId == INVALID_STACK_ID; 750 } 751 752 /** 753 * Returns true if the windows in the stack can receive input keys. 754 */ 755 public static boolean canReceiveKeys(int stackId) { 756 return stackId != PINNED_STACK_ID; 757 } 758 759 /** 760 * Returns true if the stack can be visible above lockscreen. 761 */ 762 public static boolean isAllowedOverLockscreen(int stackId) { 763 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 764 stackId == ASSISTANT_STACK_ID; 765 } 766 767 /** 768 * Returns true if activities from stasks in the given {@param stackId} are allowed to 769 * enter picture-in-picture. 770 */ 771 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 772 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 773 stackId != RECENTS_STACK_ID; 774 } 775 776 public static boolean isAlwaysOnTop(int stackId) { 777 return stackId == PINNED_STACK_ID; 778 } 779 780 /** 781 * Returns true if the top task in the task is allowed to return home when finished and 782 * there are other tasks in the stack. 783 */ 784 public static boolean allowTopTaskToReturnHome(int stackId) { 785 return stackId != PINNED_STACK_ID; 786 } 787 788 /** 789 * Returns true if the stack should be resized to match the bounds specified by 790 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 791 */ 792 public static boolean resizeStackWithLaunchBounds(int stackId) { 793 return stackId == PINNED_STACK_ID; 794 } 795 796 /** 797 * Returns true if any visible windows belonging to apps in this stack should be kept on 798 * screen when the app is killed due to something like the low memory killer. 799 */ 800 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 801 return stackId != PINNED_STACK_ID; 802 } 803 804 /** 805 * Returns true if the backdrop on the client side should match the frame of the window. 806 * Returns false, if the backdrop should be fullscreen. 807 */ 808 public static boolean useWindowFrameForBackdrop(int stackId) { 809 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 810 } 811 812 /** 813 * Returns true if a window from the specified stack with {@param stackId} are normally 814 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 815 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 816 * etc. 817 */ 818 public static boolean normallyFullscreenWindows(int stackId) { 819 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 820 && stackId != DOCKED_STACK_ID; 821 } 822 823 /** 824 * Returns true if the input stack id should only be present on a device that supports 825 * multi-window mode. 826 * @see android.app.ActivityManager#supportsMultiWindow 827 */ 828 public static boolean isMultiWindowStack(int stackId) { 829 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 830 || stackId == DOCKED_STACK_ID; 831 } 832 833 /** 834 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 835 */ 836 public static boolean isHomeOrRecentsStack(int stackId) { 837 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 838 } 839 840 /** 841 * Returns true if activities contained in this stack can request visible behind by 842 * calling {@link Activity#requestVisibleBehind}. 843 */ 844 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 845 return stackId == FULLSCREEN_WORKSPACE_STACK_ID || 846 stackId == ASSISTANT_STACK_ID; 847 } 848 849 /** 850 * Returns true if this stack may be scaled without resizing, and windows within may need 851 * to be configured as such. 852 */ 853 public static boolean windowsAreScaleable(int stackId) { 854 return stackId == PINNED_STACK_ID; 855 } 856 857 /** 858 * Returns true if windows in this stack should be given move animations by default. 859 */ 860 public static boolean hasMovementAnimations(int stackId) { 861 return stackId != PINNED_STACK_ID; 862 } 863 864 /** Returns true if the input stack and its content can affect the device orientation. */ 865 public static boolean canSpecifyOrientation(int stackId) { 866 return stackId == HOME_STACK_ID 867 || stackId == RECENTS_STACK_ID 868 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 869 || stackId == ASSISTANT_STACK_ID 870 || isDynamicStack(stackId); 871 } 872 } 873 874 /** 875 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 876 * specifies the position of the created docked stack at the top half of the screen if 877 * in portrait mode or at the left half of the screen if in landscape mode. 878 * @hide 879 */ 880 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 881 882 /** 883 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 884 * specifies the position of the created docked stack at the bottom half of the screen if 885 * in portrait mode or at the right half of the screen if in landscape mode. 886 * @hide 887 */ 888 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 889 890 /** 891 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 892 * that the resize doesn't need to preserve the window, and can be skipped if bounds 893 * is unchanged. This mode is used by window manager in most cases. 894 * @hide 895 */ 896 public static final int RESIZE_MODE_SYSTEM = 0; 897 898 /** 899 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 900 * that the resize should preserve the window if possible. 901 * @hide 902 */ 903 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 904 905 /** 906 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 907 * that the resize should be performed even if the bounds appears unchanged. 908 * @hide 909 */ 910 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 911 912 /** 913 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 914 * manager during a screen rotation. 915 * @hide 916 */ 917 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 918 919 /** 920 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 921 * resize is due to a drag action. 922 * @hide 923 */ 924 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 925 926 /** 927 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 928 * that the resize should preserve the window if possible, and should not be skipped 929 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 930 * is ending. 931 * @hide 932 */ 933 public static final int RESIZE_MODE_USER_FORCED = 934 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 935 936 /** @hide */ 937 public int getFrontActivityScreenCompatMode() { 938 try { 939 return getService().getFrontActivityScreenCompatMode(); 940 } catch (RemoteException e) { 941 throw e.rethrowFromSystemServer(); 942 } 943 } 944 945 /** @hide */ 946 public void setFrontActivityScreenCompatMode(int mode) { 947 try { 948 getService().setFrontActivityScreenCompatMode(mode); 949 } catch (RemoteException e) { 950 throw e.rethrowFromSystemServer(); 951 } 952 } 953 954 /** @hide */ 955 public int getPackageScreenCompatMode(String packageName) { 956 try { 957 return getService().getPackageScreenCompatMode(packageName); 958 } catch (RemoteException e) { 959 throw e.rethrowFromSystemServer(); 960 } 961 } 962 963 /** @hide */ 964 public void setPackageScreenCompatMode(String packageName, int mode) { 965 try { 966 getService().setPackageScreenCompatMode(packageName, mode); 967 } catch (RemoteException e) { 968 throw e.rethrowFromSystemServer(); 969 } 970 } 971 972 /** @hide */ 973 public boolean getPackageAskScreenCompat(String packageName) { 974 try { 975 return getService().getPackageAskScreenCompat(packageName); 976 } catch (RemoteException e) { 977 throw e.rethrowFromSystemServer(); 978 } 979 } 980 981 /** @hide */ 982 public void setPackageAskScreenCompat(String packageName, boolean ask) { 983 try { 984 getService().setPackageAskScreenCompat(packageName, ask); 985 } catch (RemoteException e) { 986 throw e.rethrowFromSystemServer(); 987 } 988 } 989 990 /** 991 * Return the approximate per-application memory class of the current 992 * device. This gives you an idea of how hard a memory limit you should 993 * impose on your application to let the overall system work best. The 994 * returned value is in megabytes; the baseline Android memory class is 995 * 16 (which happens to be the Java heap limit of those devices); some 996 * device with more memory may return 24 or even higher numbers. 997 */ 998 public int getMemoryClass() { 999 return staticGetMemoryClass(); 1000 } 1001 1002 /** @hide */ 1003 static public int staticGetMemoryClass() { 1004 // Really brain dead right now -- just take this from the configured 1005 // vm heap size, and assume it is in megabytes and thus ends with "m". 1006 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1007 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1008 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1009 } 1010 return staticGetLargeMemoryClass(); 1011 } 1012 1013 /** 1014 * Return the approximate per-application memory class of the current 1015 * device when an application is running with a large heap. This is the 1016 * space available for memory-intensive applications; most applications 1017 * should not need this amount of memory, and should instead stay with the 1018 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1019 * This may be the same size as {@link #getMemoryClass()} on memory 1020 * constrained devices, or it may be significantly larger on devices with 1021 * a large amount of available RAM. 1022 * 1023 * <p>The is the size of the application's Dalvik heap if it has 1024 * specified <code>android:largeHeap="true"</code> in its manifest. 1025 */ 1026 public int getLargeMemoryClass() { 1027 return staticGetLargeMemoryClass(); 1028 } 1029 1030 /** @hide */ 1031 static public int staticGetLargeMemoryClass() { 1032 // Really brain dead right now -- just take this from the configured 1033 // vm heap size, and assume it is in megabytes and thus ends with "m". 1034 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1035 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1036 } 1037 1038 /** 1039 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1040 * is ultimately up to the device configuration, but currently it generally means 1041 * something in the class of a 512MB device with about a 800x480 or less screen. 1042 * This is mostly intended to be used by apps to determine whether they should turn 1043 * off certain features that require more RAM. 1044 */ 1045 public boolean isLowRamDevice() { 1046 return isLowRamDeviceStatic(); 1047 } 1048 1049 /** @hide */ 1050 public static boolean isLowRamDeviceStatic() { 1051 return RoSystemProperties.CONFIG_LOW_RAM; 1052 } 1053 1054 /** 1055 * Used by persistent processes to determine if they are running on a 1056 * higher-end device so should be okay using hardware drawing acceleration 1057 * (which tends to consume a lot more RAM). 1058 * @hide 1059 */ 1060 static public boolean isHighEndGfx() { 1061 return !isLowRamDeviceStatic() && 1062 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1063 } 1064 1065 /** 1066 * Return the maximum number of recents entries that we will maintain and show. 1067 * @hide 1068 */ 1069 static public int getMaxRecentTasksStatic() { 1070 if (gMaxRecentTasks < 0) { 1071 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1072 } 1073 return gMaxRecentTasks; 1074 } 1075 1076 /** 1077 * Return the default limit on the number of recents that an app can make. 1078 * @hide 1079 */ 1080 static public int getDefaultAppRecentsLimitStatic() { 1081 return getMaxRecentTasksStatic() / 6; 1082 } 1083 1084 /** 1085 * Return the maximum limit on the number of recents that an app can make. 1086 * @hide 1087 */ 1088 static public int getMaxAppRecentsLimitStatic() { 1089 return getMaxRecentTasksStatic() / 2; 1090 } 1091 1092 /** 1093 * Returns true if the system supports at least one form of multi-window. 1094 * E.g. freeform, split-screen, picture-in-picture. 1095 * @hide 1096 */ 1097 static public boolean supportsMultiWindow() { 1098 return !isLowRamDeviceStatic() 1099 && Resources.getSystem().getBoolean( 1100 com.android.internal.R.bool.config_supportsMultiWindow); 1101 } 1102 1103 /** 1104 * Returns true if the system supports split screen multi-window. 1105 * @hide 1106 */ 1107 static public boolean supportsSplitScreenMultiWindow() { 1108 return supportsMultiWindow() 1109 && Resources.getSystem().getBoolean( 1110 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1111 } 1112 1113 /** 1114 * Return the maximum number of actions that will be displayed in the picture-in-picture UI when 1115 * the user interacts with the activity currently in picture-in-picture mode. 1116 */ 1117 public static int getMaxNumPictureInPictureActions() { 1118 return NUM_ALLOWED_PIP_ACTIONS; 1119 } 1120 1121 /** 1122 * Information you can set and retrieve about the current activity within the recent task list. 1123 */ 1124 public static class TaskDescription implements Parcelable { 1125 /** @hide */ 1126 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1127 private static final String ATTR_TASKDESCRIPTIONLABEL = 1128 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1129 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1130 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1131 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1132 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1133 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1134 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1135 1136 private String mLabel; 1137 private Bitmap mIcon; 1138 private String mIconFilename; 1139 private int mColorPrimary; 1140 private int mColorBackground; 1141 1142 /** 1143 * Creates the TaskDescription to the specified values. 1144 * 1145 * @param label A label and description of the current state of this task. 1146 * @param icon An icon that represents the current state of this task. 1147 * @param colorPrimary A color to override the theme's primary color. This color must be 1148 * opaque. 1149 */ 1150 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1151 this(label, icon, null, colorPrimary, 0); 1152 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1153 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1154 } 1155 } 1156 1157 /** 1158 * Creates the TaskDescription to the specified values. 1159 * 1160 * @param label A label and description of the current state of this activity. 1161 * @param icon An icon that represents the current state of this activity. 1162 */ 1163 public TaskDescription(String label, Bitmap icon) { 1164 this(label, icon, null, 0, 0); 1165 } 1166 1167 /** 1168 * Creates the TaskDescription to the specified values. 1169 * 1170 * @param label A label and description of the current state of this activity. 1171 */ 1172 public TaskDescription(String label) { 1173 this(label, null, null, 0, 0); 1174 } 1175 1176 /** 1177 * Creates an empty TaskDescription. 1178 */ 1179 public TaskDescription() { 1180 this(null, null, null, 0, 0); 1181 } 1182 1183 /** @hide */ 1184 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1185 int colorBackground) { 1186 mLabel = label; 1187 mIcon = icon; 1188 mIconFilename = iconFilename; 1189 mColorPrimary = colorPrimary; 1190 mColorBackground = colorBackground; 1191 } 1192 1193 /** 1194 * Creates a copy of another TaskDescription. 1195 */ 1196 public TaskDescription(TaskDescription td) { 1197 copyFrom(td); 1198 } 1199 1200 /** 1201 * Copies this the values from another TaskDescription. 1202 * @hide 1203 */ 1204 public void copyFrom(TaskDescription other) { 1205 mLabel = other.mLabel; 1206 mIcon = other.mIcon; 1207 mIconFilename = other.mIconFilename; 1208 mColorPrimary = other.mColorPrimary; 1209 mColorBackground = other.mColorBackground; 1210 } 1211 1212 private TaskDescription(Parcel source) { 1213 readFromParcel(source); 1214 } 1215 1216 /** 1217 * Sets the label for this task description. 1218 * @hide 1219 */ 1220 public void setLabel(String label) { 1221 mLabel = label; 1222 } 1223 1224 /** 1225 * Sets the primary color for this task description. 1226 * @hide 1227 */ 1228 public void setPrimaryColor(int primaryColor) { 1229 // Ensure that the given color is valid 1230 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1231 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1232 } 1233 mColorPrimary = primaryColor; 1234 } 1235 1236 /** 1237 * Sets the background color for this task description. 1238 * @hide 1239 */ 1240 public void setBackgroundColor(int backgroundColor) { 1241 // Ensure that the given color is valid 1242 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1243 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1244 } 1245 mColorBackground = backgroundColor; 1246 } 1247 1248 /** 1249 * Sets the icon for this task description. 1250 * @hide 1251 */ 1252 public void setIcon(Bitmap icon) { 1253 mIcon = icon; 1254 } 1255 1256 /** 1257 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1258 * bitmap. 1259 * @hide 1260 */ 1261 public void setIconFilename(String iconFilename) { 1262 mIconFilename = iconFilename; 1263 mIcon = null; 1264 } 1265 1266 /** 1267 * @return The label and description of the current state of this task. 1268 */ 1269 public String getLabel() { 1270 return mLabel; 1271 } 1272 1273 /** 1274 * @return The icon that represents the current state of this task. 1275 */ 1276 public Bitmap getIcon() { 1277 if (mIcon != null) { 1278 return mIcon; 1279 } 1280 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1281 } 1282 1283 /** @hide */ 1284 public String getIconFilename() { 1285 return mIconFilename; 1286 } 1287 1288 /** @hide */ 1289 public Bitmap getInMemoryIcon() { 1290 return mIcon; 1291 } 1292 1293 /** @hide */ 1294 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1295 if (iconFilename != null) { 1296 try { 1297 return getService().getTaskDescriptionIcon(iconFilename, 1298 userId); 1299 } catch (RemoteException e) { 1300 throw e.rethrowFromSystemServer(); 1301 } 1302 } 1303 return null; 1304 } 1305 1306 /** 1307 * @return The color override on the theme's primary color. 1308 */ 1309 public int getPrimaryColor() { 1310 return mColorPrimary; 1311 } 1312 1313 /** 1314 * @return The background color. 1315 * @hide 1316 */ 1317 public int getBackgroundColor() { 1318 return mColorBackground; 1319 } 1320 1321 /** @hide */ 1322 public void saveToXml(XmlSerializer out) throws IOException { 1323 if (mLabel != null) { 1324 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1325 } 1326 if (mColorPrimary != 0) { 1327 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1328 Integer.toHexString(mColorPrimary)); 1329 } 1330 if (mColorBackground != 0) { 1331 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1332 Integer.toHexString(mColorBackground)); 1333 } 1334 if (mIconFilename != null) { 1335 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1336 } 1337 } 1338 1339 /** @hide */ 1340 public void restoreFromXml(String attrName, String attrValue) { 1341 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1342 setLabel(attrValue); 1343 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1344 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1345 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1346 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1347 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1348 setIconFilename(attrValue); 1349 } 1350 } 1351 1352 @Override 1353 public int describeContents() { 1354 return 0; 1355 } 1356 1357 @Override 1358 public void writeToParcel(Parcel dest, int flags) { 1359 if (mLabel == null) { 1360 dest.writeInt(0); 1361 } else { 1362 dest.writeInt(1); 1363 dest.writeString(mLabel); 1364 } 1365 if (mIcon == null) { 1366 dest.writeInt(0); 1367 } else { 1368 dest.writeInt(1); 1369 mIcon.writeToParcel(dest, 0); 1370 } 1371 dest.writeInt(mColorPrimary); 1372 dest.writeInt(mColorBackground); 1373 if (mIconFilename == null) { 1374 dest.writeInt(0); 1375 } else { 1376 dest.writeInt(1); 1377 dest.writeString(mIconFilename); 1378 } 1379 } 1380 1381 public void readFromParcel(Parcel source) { 1382 mLabel = source.readInt() > 0 ? source.readString() : null; 1383 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1384 mColorPrimary = source.readInt(); 1385 mColorBackground = source.readInt(); 1386 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1387 } 1388 1389 public static final Creator<TaskDescription> CREATOR 1390 = new Creator<TaskDescription>() { 1391 public TaskDescription createFromParcel(Parcel source) { 1392 return new TaskDescription(source); 1393 } 1394 public TaskDescription[] newArray(int size) { 1395 return new TaskDescription[size]; 1396 } 1397 }; 1398 1399 @Override 1400 public String toString() { 1401 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1402 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1403 " colorBackground: " + mColorBackground; 1404 } 1405 } 1406 1407 /** 1408 * Information you can retrieve about tasks that the user has most recently 1409 * started or visited. 1410 */ 1411 public static class RecentTaskInfo implements Parcelable { 1412 /** 1413 * If this task is currently running, this is the identifier for it. 1414 * If it is not running, this will be -1. 1415 */ 1416 public int id; 1417 1418 /** 1419 * The true identifier of this task, valid even if it is not running. 1420 */ 1421 public int persistentId; 1422 1423 /** 1424 * The original Intent used to launch the task. You can use this 1425 * Intent to re-launch the task (if it is no longer running) or bring 1426 * the current task to the front. 1427 */ 1428 public Intent baseIntent; 1429 1430 /** 1431 * If this task was started from an alias, this is the actual 1432 * activity component that was initially started; the component of 1433 * the baseIntent in this case is the name of the actual activity 1434 * implementation that the alias referred to. Otherwise, this is null. 1435 */ 1436 public ComponentName origActivity; 1437 1438 /** 1439 * The actual activity component that started the task. 1440 * @hide 1441 */ 1442 @Nullable 1443 public ComponentName realActivity; 1444 1445 /** 1446 * Description of the task's last state. 1447 */ 1448 public CharSequence description; 1449 1450 /** 1451 * The id of the ActivityStack this Task was on most recently. 1452 * @hide 1453 */ 1454 public int stackId; 1455 1456 /** 1457 * The id of the user the task was running as. 1458 * @hide 1459 */ 1460 public int userId; 1461 1462 /** 1463 * The first time this task was active. 1464 * @hide 1465 */ 1466 public long firstActiveTime; 1467 1468 /** 1469 * The last time this task was active. 1470 * @hide 1471 */ 1472 public long lastActiveTime; 1473 1474 /** 1475 * The recent activity values for the highest activity in the stack to have set the values. 1476 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1477 */ 1478 public TaskDescription taskDescription; 1479 1480 /** 1481 * Task affiliation for grouping with other tasks. 1482 */ 1483 public int affiliatedTaskId; 1484 1485 /** 1486 * Task affiliation color of the source task with the affiliated task id. 1487 * 1488 * @hide 1489 */ 1490 public int affiliatedTaskColor; 1491 1492 /** 1493 * The component launched as the first activity in the task. 1494 * This can be considered the "application" of this task. 1495 */ 1496 public ComponentName baseActivity; 1497 1498 /** 1499 * The activity component at the top of the history stack of the task. 1500 * This is what the user is currently doing. 1501 */ 1502 public ComponentName topActivity; 1503 1504 /** 1505 * Number of activities in this task. 1506 */ 1507 public int numActivities; 1508 1509 /** 1510 * The bounds of the task. 1511 * @hide 1512 */ 1513 public Rect bounds; 1514 1515 /** 1516 * True if the task can go in the docked stack. 1517 * @hide 1518 */ 1519 public boolean supportsSplitScreenMultiWindow; 1520 1521 /** 1522 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1523 * @hide 1524 */ 1525 public int resizeMode; 1526 1527 public RecentTaskInfo() { 1528 } 1529 1530 @Override 1531 public int describeContents() { 1532 return 0; 1533 } 1534 1535 @Override 1536 public void writeToParcel(Parcel dest, int flags) { 1537 dest.writeInt(id); 1538 dest.writeInt(persistentId); 1539 if (baseIntent != null) { 1540 dest.writeInt(1); 1541 baseIntent.writeToParcel(dest, 0); 1542 } else { 1543 dest.writeInt(0); 1544 } 1545 ComponentName.writeToParcel(origActivity, dest); 1546 ComponentName.writeToParcel(realActivity, dest); 1547 TextUtils.writeToParcel(description, dest, 1548 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1549 if (taskDescription != null) { 1550 dest.writeInt(1); 1551 taskDescription.writeToParcel(dest, 0); 1552 } else { 1553 dest.writeInt(0); 1554 } 1555 dest.writeInt(stackId); 1556 dest.writeInt(userId); 1557 dest.writeLong(firstActiveTime); 1558 dest.writeLong(lastActiveTime); 1559 dest.writeInt(affiliatedTaskId); 1560 dest.writeInt(affiliatedTaskColor); 1561 ComponentName.writeToParcel(baseActivity, dest); 1562 ComponentName.writeToParcel(topActivity, dest); 1563 dest.writeInt(numActivities); 1564 if (bounds != null) { 1565 dest.writeInt(1); 1566 bounds.writeToParcel(dest, 0); 1567 } else { 1568 dest.writeInt(0); 1569 } 1570 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1571 dest.writeInt(resizeMode); 1572 } 1573 1574 public void readFromParcel(Parcel source) { 1575 id = source.readInt(); 1576 persistentId = source.readInt(); 1577 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1578 origActivity = ComponentName.readFromParcel(source); 1579 realActivity = ComponentName.readFromParcel(source); 1580 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1581 taskDescription = source.readInt() > 0 ? 1582 TaskDescription.CREATOR.createFromParcel(source) : null; 1583 stackId = source.readInt(); 1584 userId = source.readInt(); 1585 firstActiveTime = source.readLong(); 1586 lastActiveTime = source.readLong(); 1587 affiliatedTaskId = source.readInt(); 1588 affiliatedTaskColor = source.readInt(); 1589 baseActivity = ComponentName.readFromParcel(source); 1590 topActivity = ComponentName.readFromParcel(source); 1591 numActivities = source.readInt(); 1592 bounds = source.readInt() > 0 ? 1593 Rect.CREATOR.createFromParcel(source) : null; 1594 supportsSplitScreenMultiWindow = source.readInt() == 1; 1595 resizeMode = source.readInt(); 1596 } 1597 1598 public static final Creator<RecentTaskInfo> CREATOR 1599 = new Creator<RecentTaskInfo>() { 1600 public RecentTaskInfo createFromParcel(Parcel source) { 1601 return new RecentTaskInfo(source); 1602 } 1603 public RecentTaskInfo[] newArray(int size) { 1604 return new RecentTaskInfo[size]; 1605 } 1606 }; 1607 1608 private RecentTaskInfo(Parcel source) { 1609 readFromParcel(source); 1610 } 1611 } 1612 1613 /** 1614 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1615 * that have set their 1616 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1617 */ 1618 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1619 1620 /** 1621 * Provides a list that does not contain any 1622 * recent tasks that currently are not available to the user. 1623 */ 1624 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1625 1626 /** 1627 * Provides a list that contains recent tasks for all 1628 * profiles of a user. 1629 * @hide 1630 */ 1631 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1632 1633 /** 1634 * Ignores all tasks that are on the home stack. 1635 * @hide 1636 */ 1637 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1638 1639 /** 1640 * Ignores the top task in the docked stack. 1641 * @hide 1642 */ 1643 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1644 1645 /** 1646 * Ignores all tasks that are on the pinned stack. 1647 * @hide 1648 */ 1649 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1650 1651 /** 1652 * <p></p>Return a list of the tasks that the user has recently launched, with 1653 * the most recent being first and older ones after in order. 1654 * 1655 * <p><b>Note: this method is only intended for debugging and presenting 1656 * task management user interfaces</b>. This should never be used for 1657 * core logic in an application, such as deciding between different 1658 * behaviors based on the information found here. Such uses are 1659 * <em>not</em> supported, and will likely break in the future. For 1660 * example, if multiple applications can be actively running at the 1661 * same time, assumptions made about the meaning of the data here for 1662 * purposes of control flow will be incorrect.</p> 1663 * 1664 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1665 * no longer available to third party applications: the introduction of 1666 * document-centric recents means 1667 * it can leak personal information to the caller. For backwards compatibility, 1668 * it will still return a small subset of its data: at least the caller's 1669 * own tasks (though see {@link #getAppTasks()} for the correct supported 1670 * way to retrieve that information), and possibly some other tasks 1671 * such as home that are known to not be sensitive. 1672 * 1673 * @param maxNum The maximum number of entries to return in the list. The 1674 * actual number returned may be smaller, depending on how many tasks the 1675 * user has started and the maximum number the system can remember. 1676 * @param flags Information about what to return. May be any combination 1677 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1678 * 1679 * @return Returns a list of RecentTaskInfo records describing each of 1680 * the recent tasks. 1681 */ 1682 @Deprecated 1683 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1684 throws SecurityException { 1685 try { 1686 return getService().getRecentTasks(maxNum, 1687 flags, UserHandle.myUserId()).getList(); 1688 } catch (RemoteException e) { 1689 throw e.rethrowFromSystemServer(); 1690 } 1691 } 1692 1693 /** 1694 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1695 * specific user. It requires holding 1696 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1697 * @param maxNum The maximum number of entries to return in the list. The 1698 * actual number returned may be smaller, depending on how many tasks the 1699 * user has started and the maximum number the system can remember. 1700 * @param flags Information about what to return. May be any combination 1701 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1702 * 1703 * @return Returns a list of RecentTaskInfo records describing each of 1704 * the recent tasks. Most recently activated tasks go first. 1705 * 1706 * @hide 1707 */ 1708 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1709 throws SecurityException { 1710 try { 1711 return getService().getRecentTasks(maxNum, 1712 flags, userId).getList(); 1713 } catch (RemoteException e) { 1714 throw e.rethrowFromSystemServer(); 1715 } 1716 } 1717 1718 /** 1719 * Information you can retrieve about a particular task that is currently 1720 * "running" in the system. Note that a running task does not mean the 1721 * given task actually has a process it is actively running in; it simply 1722 * means that the user has gone to it and never closed it, but currently 1723 * the system may have killed its process and is only holding on to its 1724 * last state in order to restart it when the user returns. 1725 */ 1726 public static class RunningTaskInfo implements Parcelable { 1727 /** 1728 * A unique identifier for this task. 1729 */ 1730 public int id; 1731 1732 /** 1733 * The stack that currently contains this task. 1734 * @hide 1735 */ 1736 public int stackId; 1737 1738 /** 1739 * The component launched as the first activity in the task. This can 1740 * be considered the "application" of this task. 1741 */ 1742 public ComponentName baseActivity; 1743 1744 /** 1745 * The activity component at the top of the history stack of the task. 1746 * This is what the user is currently doing. 1747 */ 1748 public ComponentName topActivity; 1749 1750 /** 1751 * Thumbnail representation of the task's current state. Currently 1752 * always null. 1753 */ 1754 public Bitmap thumbnail; 1755 1756 /** 1757 * Description of the task's current state. 1758 */ 1759 public CharSequence description; 1760 1761 /** 1762 * Number of activities in this task. 1763 */ 1764 public int numActivities; 1765 1766 /** 1767 * Number of activities that are currently running (not stopped 1768 * and persisted) in this task. 1769 */ 1770 public int numRunning; 1771 1772 /** 1773 * Last time task was run. For sorting. 1774 * @hide 1775 */ 1776 public long lastActiveTime; 1777 1778 /** 1779 * True if the task can go in the docked stack. 1780 * @hide 1781 */ 1782 public boolean supportsSplitScreenMultiWindow; 1783 1784 /** 1785 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1786 * @hide 1787 */ 1788 public int resizeMode; 1789 1790 public RunningTaskInfo() { 1791 } 1792 1793 public int describeContents() { 1794 return 0; 1795 } 1796 1797 public void writeToParcel(Parcel dest, int flags) { 1798 dest.writeInt(id); 1799 dest.writeInt(stackId); 1800 ComponentName.writeToParcel(baseActivity, dest); 1801 ComponentName.writeToParcel(topActivity, dest); 1802 if (thumbnail != null) { 1803 dest.writeInt(1); 1804 thumbnail.writeToParcel(dest, 0); 1805 } else { 1806 dest.writeInt(0); 1807 } 1808 TextUtils.writeToParcel(description, dest, 1809 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1810 dest.writeInt(numActivities); 1811 dest.writeInt(numRunning); 1812 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1813 dest.writeInt(resizeMode); 1814 } 1815 1816 public void readFromParcel(Parcel source) { 1817 id = source.readInt(); 1818 stackId = source.readInt(); 1819 baseActivity = ComponentName.readFromParcel(source); 1820 topActivity = ComponentName.readFromParcel(source); 1821 if (source.readInt() != 0) { 1822 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1823 } else { 1824 thumbnail = null; 1825 } 1826 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1827 numActivities = source.readInt(); 1828 numRunning = source.readInt(); 1829 supportsSplitScreenMultiWindow = source.readInt() != 0; 1830 resizeMode = source.readInt(); 1831 } 1832 1833 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1834 public RunningTaskInfo createFromParcel(Parcel source) { 1835 return new RunningTaskInfo(source); 1836 } 1837 public RunningTaskInfo[] newArray(int size) { 1838 return new RunningTaskInfo[size]; 1839 } 1840 }; 1841 1842 private RunningTaskInfo(Parcel source) { 1843 readFromParcel(source); 1844 } 1845 } 1846 1847 /** 1848 * Get the list of tasks associated with the calling application. 1849 * 1850 * @return The list of tasks associated with the application making this call. 1851 * @throws SecurityException 1852 */ 1853 public List<ActivityManager.AppTask> getAppTasks() { 1854 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1855 List<IBinder> appTasks; 1856 try { 1857 appTasks = getService().getAppTasks(mContext.getPackageName()); 1858 } catch (RemoteException e) { 1859 throw e.rethrowFromSystemServer(); 1860 } 1861 int numAppTasks = appTasks.size(); 1862 for (int i = 0; i < numAppTasks; i++) { 1863 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1864 } 1865 return tasks; 1866 } 1867 1868 /** 1869 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1870 * with {@link #addAppTask}. 1871 */ 1872 public Size getAppTaskThumbnailSize() { 1873 synchronized (this) { 1874 ensureAppTaskThumbnailSizeLocked(); 1875 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1876 } 1877 } 1878 1879 private void ensureAppTaskThumbnailSizeLocked() { 1880 if (mAppTaskThumbnailSize == null) { 1881 try { 1882 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1883 } catch (RemoteException e) { 1884 throw e.rethrowFromSystemServer(); 1885 } 1886 } 1887 } 1888 1889 /** 1890 * Add a new {@link AppTask} for the calling application. This will create a new 1891 * recents entry that is added to the <b>end</b> of all existing recents. 1892 * 1893 * @param activity The activity that is adding the entry. This is used to help determine 1894 * the context that the new recents entry will be in. 1895 * @param intent The Intent that describes the recents entry. This is the same Intent that 1896 * you would have used to launch the activity for it. In generally you will want to set 1897 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1898 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1899 * entry will exist without an activity, so it doesn't make sense to not retain it when 1900 * its activity disappears. The given Intent here also must have an explicit ComponentName 1901 * set on it. 1902 * @param description Optional additional description information. 1903 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1904 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1905 * recreated in your process, probably in a way you don't like, before the recents entry 1906 * is added. 1907 * 1908 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1909 * most likely cause of failure is that there is no more room for more tasks for your app. 1910 */ 1911 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1912 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1913 Point size; 1914 synchronized (this) { 1915 ensureAppTaskThumbnailSizeLocked(); 1916 size = mAppTaskThumbnailSize; 1917 } 1918 final int tw = thumbnail.getWidth(); 1919 final int th = thumbnail.getHeight(); 1920 if (tw != size.x || th != size.y) { 1921 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1922 1923 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1924 float scale; 1925 float dx = 0, dy = 0; 1926 if (tw * size.x > size.y * th) { 1927 scale = (float) size.x / (float) th; 1928 dx = (size.y - tw * scale) * 0.5f; 1929 } else { 1930 scale = (float) size.y / (float) tw; 1931 dy = (size.x - th * scale) * 0.5f; 1932 } 1933 Matrix matrix = new Matrix(); 1934 matrix.setScale(scale, scale); 1935 matrix.postTranslate((int) (dx + 0.5f), 0); 1936 1937 Canvas canvas = new Canvas(bm); 1938 canvas.drawBitmap(thumbnail, matrix, null); 1939 canvas.setBitmap(null); 1940 1941 thumbnail = bm; 1942 } 1943 if (description == null) { 1944 description = new TaskDescription(); 1945 } 1946 try { 1947 return getService().addAppTask(activity.getActivityToken(), 1948 intent, description, thumbnail); 1949 } catch (RemoteException e) { 1950 throw e.rethrowFromSystemServer(); 1951 } 1952 } 1953 1954 /** 1955 * Return a list of the tasks that are currently running, with 1956 * the most recent being first and older ones after in order. Note that 1957 * "running" does not mean any of the task's code is currently loaded or 1958 * activity -- the task may have been frozen by the system, so that it 1959 * can be restarted in its previous state when next brought to the 1960 * foreground. 1961 * 1962 * <p><b>Note: this method is only intended for debugging and presenting 1963 * task management user interfaces</b>. This should never be used for 1964 * core logic in an application, such as deciding between different 1965 * behaviors based on the information found here. Such uses are 1966 * <em>not</em> supported, and will likely break in the future. For 1967 * example, if multiple applications can be actively running at the 1968 * same time, assumptions made about the meaning of the data here for 1969 * purposes of control flow will be incorrect.</p> 1970 * 1971 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1972 * is no longer available to third party 1973 * applications: the introduction of document-centric recents means 1974 * it can leak person information to the caller. For backwards compatibility, 1975 * it will still retu rn a small subset of its data: at least the caller's 1976 * own tasks, and possibly some other tasks 1977 * such as home that are known to not be sensitive. 1978 * 1979 * @param maxNum The maximum number of entries to return in the list. The 1980 * actual number returned may be smaller, depending on how many tasks the 1981 * user has started. 1982 * 1983 * @return Returns a list of RunningTaskInfo records describing each of 1984 * the running tasks. 1985 */ 1986 @Deprecated 1987 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1988 throws SecurityException { 1989 try { 1990 return getService().getTasks(maxNum, 0); 1991 } catch (RemoteException e) { 1992 throw e.rethrowFromSystemServer(); 1993 } 1994 } 1995 1996 /** 1997 * Completely remove the given task. 1998 * 1999 * @param taskId Identifier of the task to be removed. 2000 * @return Returns true if the given task was found and removed. 2001 * 2002 * @hide 2003 */ 2004 public boolean removeTask(int taskId) throws SecurityException { 2005 try { 2006 return getService().removeTask(taskId); 2007 } catch (RemoteException e) { 2008 throw e.rethrowFromSystemServer(); 2009 } 2010 } 2011 2012 /** 2013 * Metadata related to the {@link TaskThumbnail}. 2014 * 2015 * @hide 2016 */ 2017 public static class TaskThumbnailInfo implements Parcelable { 2018 /** @hide */ 2019 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2020 private static final String ATTR_TASK_WIDTH = 2021 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2022 private static final String ATTR_TASK_HEIGHT = 2023 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2024 private static final String ATTR_SCREEN_ORIENTATION = 2025 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2026 2027 public int taskWidth; 2028 public int taskHeight; 2029 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2030 2031 public TaskThumbnailInfo() { 2032 // Do nothing 2033 } 2034 2035 private TaskThumbnailInfo(Parcel source) { 2036 readFromParcel(source); 2037 } 2038 2039 /** 2040 * Resets this info state to the initial state. 2041 * @hide 2042 */ 2043 public void reset() { 2044 taskWidth = 0; 2045 taskHeight = 0; 2046 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2047 } 2048 2049 /** 2050 * Copies from another ThumbnailInfo. 2051 */ 2052 public void copyFrom(TaskThumbnailInfo o) { 2053 taskWidth = o.taskWidth; 2054 taskHeight = o.taskHeight; 2055 screenOrientation = o.screenOrientation; 2056 } 2057 2058 /** @hide */ 2059 public void saveToXml(XmlSerializer out) throws IOException { 2060 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2061 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2062 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2063 } 2064 2065 /** @hide */ 2066 public void restoreFromXml(String attrName, String attrValue) { 2067 if (ATTR_TASK_WIDTH.equals(attrName)) { 2068 taskWidth = Integer.parseInt(attrValue); 2069 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2070 taskHeight = Integer.parseInt(attrValue); 2071 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2072 screenOrientation = Integer.parseInt(attrValue); 2073 } 2074 } 2075 2076 public int describeContents() { 2077 return 0; 2078 } 2079 2080 public void writeToParcel(Parcel dest, int flags) { 2081 dest.writeInt(taskWidth); 2082 dest.writeInt(taskHeight); 2083 dest.writeInt(screenOrientation); 2084 } 2085 2086 public void readFromParcel(Parcel source) { 2087 taskWidth = source.readInt(); 2088 taskHeight = source.readInt(); 2089 screenOrientation = source.readInt(); 2090 } 2091 2092 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2093 public TaskThumbnailInfo createFromParcel(Parcel source) { 2094 return new TaskThumbnailInfo(source); 2095 } 2096 public TaskThumbnailInfo[] newArray(int size) { 2097 return new TaskThumbnailInfo[size]; 2098 } 2099 }; 2100 } 2101 2102 /** @hide */ 2103 public static class TaskThumbnail implements Parcelable { 2104 public Bitmap mainThumbnail; 2105 public ParcelFileDescriptor thumbnailFileDescriptor; 2106 public TaskThumbnailInfo thumbnailInfo; 2107 2108 public TaskThumbnail() { 2109 } 2110 2111 private TaskThumbnail(Parcel source) { 2112 readFromParcel(source); 2113 } 2114 2115 public int describeContents() { 2116 if (thumbnailFileDescriptor != null) { 2117 return thumbnailFileDescriptor.describeContents(); 2118 } 2119 return 0; 2120 } 2121 2122 public void writeToParcel(Parcel dest, int flags) { 2123 if (mainThumbnail != null) { 2124 dest.writeInt(1); 2125 mainThumbnail.writeToParcel(dest, flags); 2126 } else { 2127 dest.writeInt(0); 2128 } 2129 if (thumbnailFileDescriptor != null) { 2130 dest.writeInt(1); 2131 thumbnailFileDescriptor.writeToParcel(dest, flags); 2132 } else { 2133 dest.writeInt(0); 2134 } 2135 if (thumbnailInfo != null) { 2136 dest.writeInt(1); 2137 thumbnailInfo.writeToParcel(dest, flags); 2138 } else { 2139 dest.writeInt(0); 2140 } 2141 } 2142 2143 public void readFromParcel(Parcel source) { 2144 if (source.readInt() != 0) { 2145 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2146 } else { 2147 mainThumbnail = null; 2148 } 2149 if (source.readInt() != 0) { 2150 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2151 } else { 2152 thumbnailFileDescriptor = null; 2153 } 2154 if (source.readInt() != 0) { 2155 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2156 } else { 2157 thumbnailInfo = null; 2158 } 2159 } 2160 2161 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2162 public TaskThumbnail createFromParcel(Parcel source) { 2163 return new TaskThumbnail(source); 2164 } 2165 public TaskThumbnail[] newArray(int size) { 2166 return new TaskThumbnail[size]; 2167 } 2168 }; 2169 } 2170 2171 /** 2172 * Represents a task snapshot. 2173 * @hide 2174 */ 2175 public static class TaskSnapshot implements Parcelable { 2176 2177 private final GraphicBuffer mSnapshot; 2178 private final int mOrientation; 2179 private final Rect mContentInsets; 2180 private final boolean mReducedResolution; 2181 private final float mScale; 2182 2183 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2184 boolean reducedResolution, float scale) { 2185 mSnapshot = snapshot; 2186 mOrientation = orientation; 2187 mContentInsets = new Rect(contentInsets); 2188 mReducedResolution = reducedResolution; 2189 mScale = scale; 2190 } 2191 2192 private TaskSnapshot(Parcel source) { 2193 mSnapshot = source.readParcelable(null /* classLoader */); 2194 mOrientation = source.readInt(); 2195 mContentInsets = source.readParcelable(null /* classLoader */); 2196 mReducedResolution = source.readBoolean(); 2197 mScale = source.readFloat(); 2198 } 2199 2200 /** 2201 * @return The graphic buffer representing the screenshot. 2202 */ 2203 public GraphicBuffer getSnapshot() { 2204 return mSnapshot; 2205 } 2206 2207 /** 2208 * @return The screen orientation the screenshot was taken in. 2209 */ 2210 public int getOrientation() { 2211 return mOrientation; 2212 } 2213 2214 /** 2215 * @return The system/content insets on the snapshot. These can be clipped off in order to 2216 * remove any areas behind system bars in the snapshot. 2217 */ 2218 public Rect getContentInsets() { 2219 return mContentInsets; 2220 } 2221 2222 /** 2223 * @return Whether this snapshot is a down-sampled version of the full resolution. 2224 */ 2225 public boolean isReducedResolution() { 2226 return mReducedResolution; 2227 } 2228 2229 /** 2230 * @return The scale this snapshot was taken in. 2231 */ 2232 public float getScale() { 2233 return mScale; 2234 } 2235 2236 @Override 2237 public int describeContents() { 2238 return 0; 2239 } 2240 2241 @Override 2242 public void writeToParcel(Parcel dest, int flags) { 2243 dest.writeParcelable(mSnapshot, 0); 2244 dest.writeInt(mOrientation); 2245 dest.writeParcelable(mContentInsets, 0); 2246 dest.writeBoolean(mReducedResolution); 2247 dest.writeFloat(mScale); 2248 } 2249 2250 @Override 2251 public String toString() { 2252 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2253 + " mContentInsets=" + mContentInsets.toShortString() 2254 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2255 } 2256 2257 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2258 public TaskSnapshot createFromParcel(Parcel source) { 2259 return new TaskSnapshot(source); 2260 } 2261 public TaskSnapshot[] newArray(int size) { 2262 return new TaskSnapshot[size]; 2263 } 2264 }; 2265 } 2266 2267 /** @hide */ 2268 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2269 try { 2270 return getService().getTaskThumbnail(id); 2271 } catch (RemoteException e) { 2272 throw e.rethrowFromSystemServer(); 2273 } 2274 } 2275 2276 /** 2277 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2278 * activity along with the task, so it is positioned immediately behind 2279 * the task. 2280 */ 2281 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2282 2283 /** 2284 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2285 * user-instigated action, so the current activity will not receive a 2286 * hint that the user is leaving. 2287 */ 2288 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2289 2290 /** 2291 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2292 * with a null options argument. 2293 * 2294 * @param taskId The identifier of the task to be moved, as found in 2295 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2296 * @param flags Additional operational flags, 0 or more of 2297 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2298 */ 2299 public void moveTaskToFront(int taskId, int flags) { 2300 moveTaskToFront(taskId, flags, null); 2301 } 2302 2303 /** 2304 * Ask that the task associated with a given task ID be moved to the 2305 * front of the stack, so it is now visible to the user. Requires that 2306 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2307 * or a SecurityException will be thrown. 2308 * 2309 * @param taskId The identifier of the task to be moved, as found in 2310 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2311 * @param flags Additional operational flags, 0 or more of 2312 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2313 * @param options Additional options for the operation, either null or 2314 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2315 * Context.startActivity(Intent, Bundle)}. 2316 */ 2317 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2318 try { 2319 getService().moveTaskToFront(taskId, flags, options); 2320 } catch (RemoteException e) { 2321 throw e.rethrowFromSystemServer(); 2322 } 2323 } 2324 2325 /** 2326 * Information you can retrieve about a particular Service that is 2327 * currently running in the system. 2328 */ 2329 public static class RunningServiceInfo implements Parcelable { 2330 /** 2331 * The service component. 2332 */ 2333 public ComponentName service; 2334 2335 /** 2336 * If non-zero, this is the process the service is running in. 2337 */ 2338 public int pid; 2339 2340 /** 2341 * The UID that owns this service. 2342 */ 2343 public int uid; 2344 2345 /** 2346 * The name of the process this service runs in. 2347 */ 2348 public String process; 2349 2350 /** 2351 * Set to true if the service has asked to run as a foreground process. 2352 */ 2353 public boolean foreground; 2354 2355 /** 2356 * The time when the service was first made active, either by someone 2357 * starting or binding to it. This 2358 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2359 */ 2360 public long activeSince; 2361 2362 /** 2363 * Set to true if this service has been explicitly started. 2364 */ 2365 public boolean started; 2366 2367 /** 2368 * Number of clients connected to the service. 2369 */ 2370 public int clientCount; 2371 2372 /** 2373 * Number of times the service's process has crashed while the service 2374 * is running. 2375 */ 2376 public int crashCount; 2377 2378 /** 2379 * The time when there was last activity in the service (either 2380 * explicit requests to start it or clients binding to it). This 2381 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2382 */ 2383 public long lastActivityTime; 2384 2385 /** 2386 * If non-zero, this service is not currently running, but scheduled to 2387 * restart at the given time. 2388 */ 2389 public long restarting; 2390 2391 /** 2392 * Bit for {@link #flags}: set if this service has been 2393 * explicitly started. 2394 */ 2395 public static final int FLAG_STARTED = 1<<0; 2396 2397 /** 2398 * Bit for {@link #flags}: set if the service has asked to 2399 * run as a foreground process. 2400 */ 2401 public static final int FLAG_FOREGROUND = 1<<1; 2402 2403 /** 2404 * Bit for {@link #flags}: set if the service is running in a 2405 * core system process. 2406 */ 2407 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2408 2409 /** 2410 * Bit for {@link #flags}: set if the service is running in a 2411 * persistent process. 2412 */ 2413 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2414 2415 /** 2416 * Running flags. 2417 */ 2418 public int flags; 2419 2420 /** 2421 * For special services that are bound to by system code, this is 2422 * the package that holds the binding. 2423 */ 2424 public String clientPackage; 2425 2426 /** 2427 * For special services that are bound to by system code, this is 2428 * a string resource providing a user-visible label for who the 2429 * client is. 2430 */ 2431 public int clientLabel; 2432 2433 public RunningServiceInfo() { 2434 } 2435 2436 public int describeContents() { 2437 return 0; 2438 } 2439 2440 public void writeToParcel(Parcel dest, int flags) { 2441 ComponentName.writeToParcel(service, dest); 2442 dest.writeInt(pid); 2443 dest.writeInt(uid); 2444 dest.writeString(process); 2445 dest.writeInt(foreground ? 1 : 0); 2446 dest.writeLong(activeSince); 2447 dest.writeInt(started ? 1 : 0); 2448 dest.writeInt(clientCount); 2449 dest.writeInt(crashCount); 2450 dest.writeLong(lastActivityTime); 2451 dest.writeLong(restarting); 2452 dest.writeInt(this.flags); 2453 dest.writeString(clientPackage); 2454 dest.writeInt(clientLabel); 2455 } 2456 2457 public void readFromParcel(Parcel source) { 2458 service = ComponentName.readFromParcel(source); 2459 pid = source.readInt(); 2460 uid = source.readInt(); 2461 process = source.readString(); 2462 foreground = source.readInt() != 0; 2463 activeSince = source.readLong(); 2464 started = source.readInt() != 0; 2465 clientCount = source.readInt(); 2466 crashCount = source.readInt(); 2467 lastActivityTime = source.readLong(); 2468 restarting = source.readLong(); 2469 flags = source.readInt(); 2470 clientPackage = source.readString(); 2471 clientLabel = source.readInt(); 2472 } 2473 2474 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2475 public RunningServiceInfo createFromParcel(Parcel source) { 2476 return new RunningServiceInfo(source); 2477 } 2478 public RunningServiceInfo[] newArray(int size) { 2479 return new RunningServiceInfo[size]; 2480 } 2481 }; 2482 2483 private RunningServiceInfo(Parcel source) { 2484 readFromParcel(source); 2485 } 2486 } 2487 2488 /** 2489 * Return a list of the services that are currently running. 2490 * 2491 * <p><b>Note: this method is only intended for debugging or implementing 2492 * service management type user interfaces.</b></p> 2493 * 2494 * @param maxNum The maximum number of entries to return in the list. The 2495 * actual number returned may be smaller, depending on how many services 2496 * are running. 2497 * 2498 * @return Returns a list of RunningServiceInfo records describing each of 2499 * the running tasks. 2500 */ 2501 public List<RunningServiceInfo> getRunningServices(int maxNum) 2502 throws SecurityException { 2503 try { 2504 return getService() 2505 .getServices(maxNum, 0); 2506 } catch (RemoteException e) { 2507 throw e.rethrowFromSystemServer(); 2508 } 2509 } 2510 2511 /** 2512 * Returns a PendingIntent you can start to show a control panel for the 2513 * given running service. If the service does not have a control panel, 2514 * null is returned. 2515 */ 2516 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2517 throws SecurityException { 2518 try { 2519 return getService() 2520 .getRunningServiceControlPanel(service); 2521 } catch (RemoteException e) { 2522 throw e.rethrowFromSystemServer(); 2523 } 2524 } 2525 2526 /** 2527 * Information you can retrieve about the available memory through 2528 * {@link ActivityManager#getMemoryInfo}. 2529 */ 2530 public static class MemoryInfo implements Parcelable { 2531 /** 2532 * The available memory on the system. This number should not 2533 * be considered absolute: due to the nature of the kernel, a significant 2534 * portion of this memory is actually in use and needed for the overall 2535 * system to run well. 2536 */ 2537 public long availMem; 2538 2539 /** 2540 * The total memory accessible by the kernel. This is basically the 2541 * RAM size of the device, not including below-kernel fixed allocations 2542 * like DMA buffers, RAM for the baseband CPU, etc. 2543 */ 2544 public long totalMem; 2545 2546 /** 2547 * The threshold of {@link #availMem} at which we consider memory to be 2548 * low and start killing background services and other non-extraneous 2549 * processes. 2550 */ 2551 public long threshold; 2552 2553 /** 2554 * Set to true if the system considers itself to currently be in a low 2555 * memory situation. 2556 */ 2557 public boolean lowMemory; 2558 2559 /** @hide */ 2560 public long hiddenAppThreshold; 2561 /** @hide */ 2562 public long secondaryServerThreshold; 2563 /** @hide */ 2564 public long visibleAppThreshold; 2565 /** @hide */ 2566 public long foregroundAppThreshold; 2567 2568 public MemoryInfo() { 2569 } 2570 2571 public int describeContents() { 2572 return 0; 2573 } 2574 2575 public void writeToParcel(Parcel dest, int flags) { 2576 dest.writeLong(availMem); 2577 dest.writeLong(totalMem); 2578 dest.writeLong(threshold); 2579 dest.writeInt(lowMemory ? 1 : 0); 2580 dest.writeLong(hiddenAppThreshold); 2581 dest.writeLong(secondaryServerThreshold); 2582 dest.writeLong(visibleAppThreshold); 2583 dest.writeLong(foregroundAppThreshold); 2584 } 2585 2586 public void readFromParcel(Parcel source) { 2587 availMem = source.readLong(); 2588 totalMem = source.readLong(); 2589 threshold = source.readLong(); 2590 lowMemory = source.readInt() != 0; 2591 hiddenAppThreshold = source.readLong(); 2592 secondaryServerThreshold = source.readLong(); 2593 visibleAppThreshold = source.readLong(); 2594 foregroundAppThreshold = source.readLong(); 2595 } 2596 2597 public static final Creator<MemoryInfo> CREATOR 2598 = new Creator<MemoryInfo>() { 2599 public MemoryInfo createFromParcel(Parcel source) { 2600 return new MemoryInfo(source); 2601 } 2602 public MemoryInfo[] newArray(int size) { 2603 return new MemoryInfo[size]; 2604 } 2605 }; 2606 2607 private MemoryInfo(Parcel source) { 2608 readFromParcel(source); 2609 } 2610 } 2611 2612 /** 2613 * Return general information about the memory state of the system. This 2614 * can be used to help decide how to manage your own memory, though note 2615 * that polling is not recommended and 2616 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2617 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2618 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2619 * level of your process as needed, which gives a better hint for how to 2620 * manage its memory. 2621 */ 2622 public void getMemoryInfo(MemoryInfo outInfo) { 2623 try { 2624 getService().getMemoryInfo(outInfo); 2625 } catch (RemoteException e) { 2626 throw e.rethrowFromSystemServer(); 2627 } 2628 } 2629 2630 /** 2631 * Information you can retrieve about an ActivityStack in the system. 2632 * @hide 2633 */ 2634 public static class StackInfo implements Parcelable { 2635 public int stackId; 2636 public Rect bounds = new Rect(); 2637 public int[] taskIds; 2638 public String[] taskNames; 2639 public Rect[] taskBounds; 2640 public int[] taskUserIds; 2641 public ComponentName topActivity; 2642 public int displayId; 2643 public int userId; 2644 public boolean visible; 2645 // Index of the stack in the display's stack list, can be used for comparison of stack order 2646 public int position; 2647 2648 @Override 2649 public int describeContents() { 2650 return 0; 2651 } 2652 2653 @Override 2654 public void writeToParcel(Parcel dest, int flags) { 2655 dest.writeInt(stackId); 2656 dest.writeInt(bounds.left); 2657 dest.writeInt(bounds.top); 2658 dest.writeInt(bounds.right); 2659 dest.writeInt(bounds.bottom); 2660 dest.writeIntArray(taskIds); 2661 dest.writeStringArray(taskNames); 2662 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2663 dest.writeInt(boundsCount); 2664 for (int i = 0; i < boundsCount; i++) { 2665 dest.writeInt(taskBounds[i].left); 2666 dest.writeInt(taskBounds[i].top); 2667 dest.writeInt(taskBounds[i].right); 2668 dest.writeInt(taskBounds[i].bottom); 2669 } 2670 dest.writeIntArray(taskUserIds); 2671 dest.writeInt(displayId); 2672 dest.writeInt(userId); 2673 dest.writeInt(visible ? 1 : 0); 2674 dest.writeInt(position); 2675 if (topActivity != null) { 2676 dest.writeInt(1); 2677 topActivity.writeToParcel(dest, 0); 2678 } else { 2679 dest.writeInt(0); 2680 } 2681 } 2682 2683 public void readFromParcel(Parcel source) { 2684 stackId = source.readInt(); 2685 bounds = new Rect( 2686 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2687 taskIds = source.createIntArray(); 2688 taskNames = source.createStringArray(); 2689 final int boundsCount = source.readInt(); 2690 if (boundsCount > 0) { 2691 taskBounds = new Rect[boundsCount]; 2692 for (int i = 0; i < boundsCount; i++) { 2693 taskBounds[i] = new Rect(); 2694 taskBounds[i].set( 2695 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2696 } 2697 } else { 2698 taskBounds = null; 2699 } 2700 taskUserIds = source.createIntArray(); 2701 displayId = source.readInt(); 2702 userId = source.readInt(); 2703 visible = source.readInt() > 0; 2704 position = source.readInt(); 2705 if (source.readInt() > 0) { 2706 topActivity = ComponentName.readFromParcel(source); 2707 } 2708 } 2709 2710 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2711 @Override 2712 public StackInfo createFromParcel(Parcel source) { 2713 return new StackInfo(source); 2714 } 2715 @Override 2716 public StackInfo[] newArray(int size) { 2717 return new StackInfo[size]; 2718 } 2719 }; 2720 2721 public StackInfo() { 2722 } 2723 2724 private StackInfo(Parcel source) { 2725 readFromParcel(source); 2726 } 2727 2728 public String toString(String prefix) { 2729 StringBuilder sb = new StringBuilder(256); 2730 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2731 sb.append(" bounds="); sb.append(bounds.toShortString()); 2732 sb.append(" displayId="); sb.append(displayId); 2733 sb.append(" userId="); sb.append(userId); 2734 sb.append("\n"); 2735 prefix = prefix + " "; 2736 for (int i = 0; i < taskIds.length; ++i) { 2737 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2738 sb.append(": "); sb.append(taskNames[i]); 2739 if (taskBounds != null) { 2740 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2741 } 2742 sb.append(" userId=").append(taskUserIds[i]); 2743 sb.append(" visible=").append(visible); 2744 if (topActivity != null) { 2745 sb.append(" topActivity=").append(topActivity); 2746 } 2747 sb.append("\n"); 2748 } 2749 return sb.toString(); 2750 } 2751 2752 @Override 2753 public String toString() { 2754 return toString(""); 2755 } 2756 } 2757 2758 /** 2759 * @hide 2760 */ 2761 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2762 try { 2763 return getService().clearApplicationUserData(packageName, 2764 observer, UserHandle.myUserId()); 2765 } catch (RemoteException e) { 2766 throw e.rethrowFromSystemServer(); 2767 } 2768 } 2769 2770 /** 2771 * Permits an application to erase its own data from disk. This is equivalent to 2772 * the user choosing to clear the app's data from within the device settings UI. It 2773 * erases all dynamic data associated with the app -- its private data and data in its 2774 * private area on external storage -- but does not remove the installed application 2775 * itself, nor any OBB files. 2776 * 2777 * @return {@code true} if the application successfully requested that the application's 2778 * data be erased; {@code false} otherwise. 2779 */ 2780 public boolean clearApplicationUserData() { 2781 return clearApplicationUserData(mContext.getPackageName(), null); 2782 } 2783 2784 2785 /** 2786 * Permits an application to get the persistent URI permissions granted to another. 2787 * 2788 * <p>Typically called by Settings. 2789 * 2790 * @param packageName application to look for the granted permissions 2791 * @return list of granted URI permissions 2792 * 2793 * @hide 2794 */ 2795 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2796 try { 2797 return getService().getGrantedUriPermissions(packageName, 2798 UserHandle.myUserId()); 2799 } catch (RemoteException e) { 2800 throw e.rethrowFromSystemServer(); 2801 } 2802 } 2803 2804 /** 2805 * Permits an application to clear the persistent URI permissions granted to another. 2806 * 2807 * <p>Typically called by Settings. 2808 * 2809 * @param packageName application to clear its granted permissions 2810 * 2811 * @hide 2812 */ 2813 public void clearGrantedUriPermissions(String packageName) { 2814 try { 2815 getService().clearGrantedUriPermissions(packageName, 2816 UserHandle.myUserId()); 2817 } catch (RemoteException e) { 2818 throw e.rethrowFromSystemServer(); 2819 } 2820 } 2821 2822 /** 2823 * Information you can retrieve about any processes that are in an error condition. 2824 */ 2825 public static class ProcessErrorStateInfo implements Parcelable { 2826 /** 2827 * Condition codes 2828 */ 2829 public static final int NO_ERROR = 0; 2830 public static final int CRASHED = 1; 2831 public static final int NOT_RESPONDING = 2; 2832 2833 /** 2834 * The condition that the process is in. 2835 */ 2836 public int condition; 2837 2838 /** 2839 * The process name in which the crash or error occurred. 2840 */ 2841 public String processName; 2842 2843 /** 2844 * The pid of this process; 0 if none 2845 */ 2846 public int pid; 2847 2848 /** 2849 * The kernel user-ID that has been assigned to this process; 2850 * currently this is not a unique ID (multiple applications can have 2851 * the same uid). 2852 */ 2853 public int uid; 2854 2855 /** 2856 * The activity name associated with the error, if known. May be null. 2857 */ 2858 public String tag; 2859 2860 /** 2861 * A short message describing the error condition. 2862 */ 2863 public String shortMsg; 2864 2865 /** 2866 * A long message describing the error condition. 2867 */ 2868 public String longMsg; 2869 2870 /** 2871 * The stack trace where the error originated. May be null. 2872 */ 2873 public String stackTrace; 2874 2875 /** 2876 * to be deprecated: This value will always be null. 2877 */ 2878 public byte[] crashData = null; 2879 2880 public ProcessErrorStateInfo() { 2881 } 2882 2883 @Override 2884 public int describeContents() { 2885 return 0; 2886 } 2887 2888 @Override 2889 public void writeToParcel(Parcel dest, int flags) { 2890 dest.writeInt(condition); 2891 dest.writeString(processName); 2892 dest.writeInt(pid); 2893 dest.writeInt(uid); 2894 dest.writeString(tag); 2895 dest.writeString(shortMsg); 2896 dest.writeString(longMsg); 2897 dest.writeString(stackTrace); 2898 } 2899 2900 public void readFromParcel(Parcel source) { 2901 condition = source.readInt(); 2902 processName = source.readString(); 2903 pid = source.readInt(); 2904 uid = source.readInt(); 2905 tag = source.readString(); 2906 shortMsg = source.readString(); 2907 longMsg = source.readString(); 2908 stackTrace = source.readString(); 2909 } 2910 2911 public static final Creator<ProcessErrorStateInfo> CREATOR = 2912 new Creator<ProcessErrorStateInfo>() { 2913 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2914 return new ProcessErrorStateInfo(source); 2915 } 2916 public ProcessErrorStateInfo[] newArray(int size) { 2917 return new ProcessErrorStateInfo[size]; 2918 } 2919 }; 2920 2921 private ProcessErrorStateInfo(Parcel source) { 2922 readFromParcel(source); 2923 } 2924 } 2925 2926 /** 2927 * Returns a list of any processes that are currently in an error condition. The result 2928 * will be null if all processes are running properly at this time. 2929 * 2930 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2931 * current error conditions (it will not return an empty list). This list ordering is not 2932 * specified. 2933 */ 2934 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2935 try { 2936 return getService().getProcessesInErrorState(); 2937 } catch (RemoteException e) { 2938 throw e.rethrowFromSystemServer(); 2939 } 2940 } 2941 2942 /** 2943 * Information you can retrieve about a running process. 2944 */ 2945 public static class RunningAppProcessInfo implements Parcelable { 2946 /** 2947 * The name of the process that this object is associated with 2948 */ 2949 public String processName; 2950 2951 /** 2952 * The pid of this process; 0 if none 2953 */ 2954 public int pid; 2955 2956 /** 2957 * The user id of this process. 2958 */ 2959 public int uid; 2960 2961 /** 2962 * All packages that have been loaded into the process. 2963 */ 2964 public String pkgList[]; 2965 2966 /** 2967 * Constant for {@link #flags}: this is an app that is unable to 2968 * correctly save its state when going to the background, 2969 * so it can not be killed while in the background. 2970 * @hide 2971 */ 2972 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2973 2974 /** 2975 * Constant for {@link #flags}: this process is associated with a 2976 * persistent system app. 2977 * @hide 2978 */ 2979 public static final int FLAG_PERSISTENT = 1<<1; 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_HAS_ACTIVITIES = 1<<2; 2987 2988 /** 2989 * Flags of information. May be any of 2990 * {@link #FLAG_CANT_SAVE_STATE}. 2991 * @hide 2992 */ 2993 public int flags; 2994 2995 /** 2996 * Last memory trim level reported to the process: corresponds to 2997 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2998 * ComponentCallbacks2.onTrimMemory(int)}. 2999 */ 3000 public int lastTrimLevel; 3001 3002 /** 3003 * Constant for {@link #importance}: This process is running the 3004 * foreground UI; that is, it is the thing currently at the top of the screen 3005 * that the user is interacting with. 3006 */ 3007 public static final int IMPORTANCE_FOREGROUND = 100; 3008 3009 /** 3010 * Constant for {@link #importance}: This process is running a foreground 3011 * service, for example to perform music playback even while the user is 3012 * not immediately in the app. This generally indicates that the process 3013 * is doing something the user actively cares about. 3014 */ 3015 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3016 3017 /** 3018 * Constant for {@link #importance}: This process is running the foreground 3019 * UI, but the device is asleep so it is not visible to the user. This means 3020 * the user is not really aware of the process, because they can not see or 3021 * interact with it, but it is quite important because it what they expect to 3022 * return to once unlocking the device. 3023 */ 3024 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3025 3026 /** 3027 * Constant for {@link #importance}: This process is running something 3028 * that is actively visible to the user, though not in the immediate 3029 * foreground. This may be running a window that is behind the current 3030 * foreground (so paused and with its state saved, not interacting with 3031 * the user, but visible to them to some degree); it may also be running 3032 * other services under the system's control that it inconsiders important. 3033 */ 3034 public static final int IMPORTANCE_VISIBLE = 200; 3035 3036 /** 3037 * Constant for {@link #importance}: This process is not something the user 3038 * is directly aware of, but is otherwise perceptable to them to some degree. 3039 */ 3040 public static final int IMPORTANCE_PERCEPTIBLE = 130; 3041 3042 /** 3043 * Constant for {@link #importance}: This process is running an 3044 * application that can not save its state, and thus can't be killed 3045 * while in the background. 3046 * @hide 3047 */ 3048 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 3049 3050 /** 3051 * Constant for {@link #importance}: This process is contains services 3052 * that should remain running. These are background services apps have 3053 * started, not something the user is aware of, so they may be killed by 3054 * the system relatively freely (though it is generally desired that they 3055 * stay running as long as they want to). 3056 */ 3057 public static final int IMPORTANCE_SERVICE = 300; 3058 3059 /** 3060 * Constant for {@link #importance}: This process process contains 3061 * cached code that is expendable, not actively running any app components 3062 * we care about. 3063 */ 3064 public static final int IMPORTANCE_CACHED = 400; 3065 3066 /** 3067 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3068 */ 3069 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3070 3071 /** 3072 * Constant for {@link #importance}: This process is empty of any 3073 * actively running code. 3074 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3075 */ 3076 @Deprecated 3077 public static final int IMPORTANCE_EMPTY = 500; 3078 3079 /** 3080 * Constant for {@link #importance}: This process does not exist. 3081 */ 3082 public static final int IMPORTANCE_GONE = 1000; 3083 3084 /** @hide */ 3085 public static int procStateToImportance(int procState) { 3086 if (procState == PROCESS_STATE_NONEXISTENT) { 3087 return IMPORTANCE_GONE; 3088 } else if (procState >= PROCESS_STATE_HOME) { 3089 return IMPORTANCE_CACHED; 3090 } else if (procState >= PROCESS_STATE_SERVICE) { 3091 return IMPORTANCE_SERVICE; 3092 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3093 return IMPORTANCE_CANT_SAVE_STATE; 3094 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 3095 return IMPORTANCE_PERCEPTIBLE; 3096 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3097 return IMPORTANCE_VISIBLE; 3098 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3099 return IMPORTANCE_TOP_SLEEPING; 3100 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3101 return IMPORTANCE_FOREGROUND_SERVICE; 3102 } else { 3103 return IMPORTANCE_FOREGROUND; 3104 } 3105 } 3106 3107 /** @hide */ 3108 public static int importanceToProcState(int importance) { 3109 if (importance == IMPORTANCE_GONE) { 3110 return PROCESS_STATE_NONEXISTENT; 3111 } else if (importance >= IMPORTANCE_CACHED) { 3112 return PROCESS_STATE_HOME; 3113 } else if (importance >= IMPORTANCE_SERVICE) { 3114 return PROCESS_STATE_SERVICE; 3115 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3116 return PROCESS_STATE_HEAVY_WEIGHT; 3117 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3118 return PROCESS_STATE_IMPORTANT_BACKGROUND; 3119 } else if (importance >= IMPORTANCE_VISIBLE) { 3120 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3121 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3122 return PROCESS_STATE_TOP_SLEEPING; 3123 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3124 return PROCESS_STATE_FOREGROUND_SERVICE; 3125 } else { 3126 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3127 } 3128 } 3129 3130 /** 3131 * The relative importance level that the system places on this 3132 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 3133 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, or 3134 * {@link #IMPORTANCE_CACHED}. These 3135 * constants are numbered so that "more important" values are always 3136 * smaller than "less important" values. 3137 */ 3138 public int importance; 3139 3140 /** 3141 * An additional ordering within a particular {@link #importance} 3142 * category, providing finer-grained information about the relative 3143 * utility of processes within a category. This number means nothing 3144 * except that a smaller values are more recently used (and thus 3145 * more important). Currently an LRU value is only maintained for 3146 * the {@link #IMPORTANCE_CACHED} category, though others may 3147 * be maintained in the future. 3148 */ 3149 public int lru; 3150 3151 /** 3152 * Constant for {@link #importanceReasonCode}: nothing special has 3153 * been specified for the reason for this level. 3154 */ 3155 public static final int REASON_UNKNOWN = 0; 3156 3157 /** 3158 * Constant for {@link #importanceReasonCode}: one of the application's 3159 * content providers is being used by another process. The pid of 3160 * the client process is in {@link #importanceReasonPid} and the 3161 * target provider in this process is in 3162 * {@link #importanceReasonComponent}. 3163 */ 3164 public static final int REASON_PROVIDER_IN_USE = 1; 3165 3166 /** 3167 * Constant for {@link #importanceReasonCode}: one of the application's 3168 * content providers is being used by another process. The pid of 3169 * the client process is in {@link #importanceReasonPid} and the 3170 * target provider in this process is in 3171 * {@link #importanceReasonComponent}. 3172 */ 3173 public static final int REASON_SERVICE_IN_USE = 2; 3174 3175 /** 3176 * The reason for {@link #importance}, if any. 3177 */ 3178 public int importanceReasonCode; 3179 3180 /** 3181 * For the specified values of {@link #importanceReasonCode}, this 3182 * is the process ID of the other process that is a client of this 3183 * process. This will be 0 if no other process is using this one. 3184 */ 3185 public int importanceReasonPid; 3186 3187 /** 3188 * For the specified values of {@link #importanceReasonCode}, this 3189 * is the name of the component that is being used in this process. 3190 */ 3191 public ComponentName importanceReasonComponent; 3192 3193 /** 3194 * When {@link #importanceReasonPid} is non-0, this is the importance 3195 * of the other pid. @hide 3196 */ 3197 public int importanceReasonImportance; 3198 3199 /** 3200 * Current process state, as per PROCESS_STATE_* constants. 3201 * @hide 3202 */ 3203 public int processState; 3204 3205 public RunningAppProcessInfo() { 3206 importance = IMPORTANCE_FOREGROUND; 3207 importanceReasonCode = REASON_UNKNOWN; 3208 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3209 } 3210 3211 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3212 processName = pProcessName; 3213 pid = pPid; 3214 pkgList = pArr; 3215 } 3216 3217 public int describeContents() { 3218 return 0; 3219 } 3220 3221 public void writeToParcel(Parcel dest, int flags) { 3222 dest.writeString(processName); 3223 dest.writeInt(pid); 3224 dest.writeInt(uid); 3225 dest.writeStringArray(pkgList); 3226 dest.writeInt(this.flags); 3227 dest.writeInt(lastTrimLevel); 3228 dest.writeInt(importance); 3229 dest.writeInt(lru); 3230 dest.writeInt(importanceReasonCode); 3231 dest.writeInt(importanceReasonPid); 3232 ComponentName.writeToParcel(importanceReasonComponent, dest); 3233 dest.writeInt(importanceReasonImportance); 3234 dest.writeInt(processState); 3235 } 3236 3237 public void readFromParcel(Parcel source) { 3238 processName = source.readString(); 3239 pid = source.readInt(); 3240 uid = source.readInt(); 3241 pkgList = source.readStringArray(); 3242 flags = source.readInt(); 3243 lastTrimLevel = source.readInt(); 3244 importance = source.readInt(); 3245 lru = source.readInt(); 3246 importanceReasonCode = source.readInt(); 3247 importanceReasonPid = source.readInt(); 3248 importanceReasonComponent = ComponentName.readFromParcel(source); 3249 importanceReasonImportance = source.readInt(); 3250 processState = source.readInt(); 3251 } 3252 3253 public static final Creator<RunningAppProcessInfo> CREATOR = 3254 new Creator<RunningAppProcessInfo>() { 3255 public RunningAppProcessInfo createFromParcel(Parcel source) { 3256 return new RunningAppProcessInfo(source); 3257 } 3258 public RunningAppProcessInfo[] newArray(int size) { 3259 return new RunningAppProcessInfo[size]; 3260 } 3261 }; 3262 3263 private RunningAppProcessInfo(Parcel source) { 3264 readFromParcel(source); 3265 } 3266 } 3267 3268 /** 3269 * Returns a list of application processes installed on external media 3270 * that are running on the device. 3271 * 3272 * <p><b>Note: this method is only intended for debugging or building 3273 * a user-facing process management UI.</b></p> 3274 * 3275 * @return Returns a list of ApplicationInfo records, or null if none 3276 * This list ordering is not specified. 3277 * @hide 3278 */ 3279 public List<ApplicationInfo> getRunningExternalApplications() { 3280 try { 3281 return getService().getRunningExternalApplications(); 3282 } catch (RemoteException e) { 3283 throw e.rethrowFromSystemServer(); 3284 } 3285 } 3286 3287 /** 3288 * Sets the memory trim mode for a process and schedules a memory trim operation. 3289 * 3290 * <p><b>Note: this method is only intended for testing framework.</b></p> 3291 * 3292 * @return Returns true if successful. 3293 * @hide 3294 */ 3295 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3296 try { 3297 return getService().setProcessMemoryTrimLevel(process, userId, 3298 level); 3299 } catch (RemoteException e) { 3300 throw e.rethrowFromSystemServer(); 3301 } 3302 } 3303 3304 /** 3305 * Returns a list of application processes that are running on the device. 3306 * 3307 * <p><b>Note: this method is only intended for debugging or building 3308 * a user-facing process management UI.</b></p> 3309 * 3310 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3311 * running processes (it will not return an empty list). This list ordering is not 3312 * specified. 3313 */ 3314 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3315 try { 3316 return getService().getRunningAppProcesses(); 3317 } catch (RemoteException e) { 3318 throw e.rethrowFromSystemServer(); 3319 } 3320 } 3321 3322 /** 3323 * Return the importance of a given package name, based on the processes that are 3324 * currently running. The return value is one of the importance constants defined 3325 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3326 * processes that this package has code running inside of. If there are no processes 3327 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3328 * @hide 3329 */ 3330 @SystemApi @TestApi 3331 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3332 public int getPackageImportance(String packageName) { 3333 try { 3334 int procState = getService().getPackageProcessState(packageName, 3335 mContext.getOpPackageName()); 3336 return RunningAppProcessInfo.procStateToImportance(procState); 3337 } catch (RemoteException e) { 3338 throw e.rethrowFromSystemServer(); 3339 } 3340 } 3341 3342 /** 3343 * Callback to get reports about changes to the importance of a uid. Use with 3344 * {@link #addOnUidImportanceListener}. 3345 * @hide 3346 */ 3347 @SystemApi @TestApi 3348 public interface OnUidImportanceListener { 3349 /** 3350 * The importance if a given uid has changed. Will be one of the importance 3351 * values in {@link RunningAppProcessInfo}; 3352 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3353 * when the uid is no longer running at all. This callback will happen on a thread 3354 * from a thread pool, not the main UI thread. 3355 * @param uid The uid whose importance has changed. 3356 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3357 */ 3358 void onUidImportance(int uid, int importance); 3359 } 3360 3361 /** 3362 * Start monitoring changes to the imoportance of uids running in the system. 3363 * @param listener The listener callback that will receive change reports. 3364 * @param importanceCutpoint The level of importance in which the caller is interested 3365 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3366 * is used here, you will receive a call each time a uids importance transitions between 3367 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3368 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3369 * 3370 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3371 * permission to use this feature.</p> 3372 * 3373 * @throws IllegalArgumentException If the listener is already registered. 3374 * @throws SecurityException If the caller does not hold 3375 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3376 * @hide 3377 */ 3378 @SystemApi @TestApi 3379 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3380 int importanceCutpoint) { 3381 synchronized (this) { 3382 if (mImportanceListeners.containsKey(listener)) { 3383 throw new IllegalArgumentException("Listener already registered: " + listener); 3384 } 3385 // TODO: implement the cut point in the system process to avoid IPCs. 3386 UidObserver observer = new UidObserver(listener); 3387 try { 3388 getService().registerUidObserver(observer, 3389 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3390 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3391 mContext.getOpPackageName()); 3392 } catch (RemoteException e) { 3393 throw e.rethrowFromSystemServer(); 3394 } 3395 mImportanceListeners.put(listener, observer); 3396 } 3397 } 3398 3399 /** 3400 * Remove an importance listener that was previously registered with 3401 * {@link #addOnUidImportanceListener}. 3402 * 3403 * @throws IllegalArgumentException If the listener is not registered. 3404 * @hide 3405 */ 3406 @SystemApi @TestApi 3407 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3408 synchronized (this) { 3409 UidObserver observer = mImportanceListeners.remove(listener); 3410 if (observer == null) { 3411 throw new IllegalArgumentException("Listener not registered: " + listener); 3412 } 3413 try { 3414 getService().unregisterUidObserver(observer); 3415 } catch (RemoteException e) { 3416 throw e.rethrowFromSystemServer(); 3417 } 3418 } 3419 } 3420 3421 /** 3422 * Return global memory state information for the calling process. This 3423 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3424 * only fields that will be filled in are 3425 * {@link RunningAppProcessInfo#pid}, 3426 * {@link RunningAppProcessInfo#uid}, 3427 * {@link RunningAppProcessInfo#lastTrimLevel}, 3428 * {@link RunningAppProcessInfo#importance}, 3429 * {@link RunningAppProcessInfo#lru}, and 3430 * {@link RunningAppProcessInfo#importanceReasonCode}. 3431 */ 3432 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3433 try { 3434 getService().getMyMemoryState(outState); 3435 } catch (RemoteException e) { 3436 throw e.rethrowFromSystemServer(); 3437 } 3438 } 3439 3440 /** 3441 * Return information about the memory usage of one or more processes. 3442 * 3443 * <p><b>Note: this method is only intended for debugging or building 3444 * a user-facing process management UI.</b></p> 3445 * 3446 * @param pids The pids of the processes whose memory usage is to be 3447 * retrieved. 3448 * @return Returns an array of memory information, one for each 3449 * requested pid. 3450 */ 3451 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3452 try { 3453 return getService().getProcessMemoryInfo(pids); 3454 } catch (RemoteException e) { 3455 throw e.rethrowFromSystemServer(); 3456 } 3457 } 3458 3459 /** 3460 * @deprecated This is now just a wrapper for 3461 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3462 * is no longer available to applications because it allows them to 3463 * break other applications by removing their alarms, stopping their 3464 * services, etc. 3465 */ 3466 @Deprecated 3467 public void restartPackage(String packageName) { 3468 killBackgroundProcesses(packageName); 3469 } 3470 3471 /** 3472 * Have the system immediately kill all background processes associated 3473 * with the given package. This is the same as the kernel killing those 3474 * processes to reclaim memory; the system will take care of restarting 3475 * these processes in the future as needed. 3476 * 3477 * <p>You must hold the permission 3478 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3479 * call this method. 3480 * 3481 * @param packageName The name of the package whose processes are to 3482 * be killed. 3483 */ 3484 public void killBackgroundProcesses(String packageName) { 3485 try { 3486 getService().killBackgroundProcesses(packageName, 3487 UserHandle.myUserId()); 3488 } catch (RemoteException e) { 3489 throw e.rethrowFromSystemServer(); 3490 } 3491 } 3492 3493 /** 3494 * Kills the specified UID. 3495 * @param uid The UID to kill. 3496 * @param reason The reason for the kill. 3497 * 3498 * @hide 3499 */ 3500 @SystemApi 3501 @RequiresPermission(Manifest.permission.KILL_UID) 3502 public void killUid(int uid, String reason) { 3503 try { 3504 getService().killUid(UserHandle.getAppId(uid), 3505 UserHandle.getUserId(uid), reason); 3506 } catch (RemoteException e) { 3507 throw e.rethrowFromSystemServer(); 3508 } 3509 } 3510 3511 /** 3512 * Have the system perform a force stop of everything associated with 3513 * the given application package. All processes that share its uid 3514 * will be killed, all services it has running stopped, all activities 3515 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3516 * broadcast will be sent, so that any of its registered alarms can 3517 * be stopped, notifications removed, etc. 3518 * 3519 * <p>You must hold the permission 3520 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3521 * call this method. 3522 * 3523 * @param packageName The name of the package to be stopped. 3524 * @param userId The user for which the running package is to be stopped. 3525 * 3526 * @hide This is not available to third party applications due to 3527 * it allowing them to break other applications by stopping their 3528 * services, removing their alarms, etc. 3529 */ 3530 public void forceStopPackageAsUser(String packageName, int userId) { 3531 try { 3532 getService().forceStopPackage(packageName, userId); 3533 } catch (RemoteException e) { 3534 throw e.rethrowFromSystemServer(); 3535 } 3536 } 3537 3538 /** 3539 * @see #forceStopPackageAsUser(String, int) 3540 * @hide 3541 */ 3542 @SystemApi 3543 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3544 public void forceStopPackage(String packageName) { 3545 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3546 } 3547 3548 /** 3549 * Get the device configuration attributes. 3550 */ 3551 public ConfigurationInfo getDeviceConfigurationInfo() { 3552 try { 3553 return getService().getDeviceConfigurationInfo(); 3554 } catch (RemoteException e) { 3555 throw e.rethrowFromSystemServer(); 3556 } 3557 } 3558 3559 /** 3560 * Get the preferred density of icons for the launcher. This is used when 3561 * custom drawables are created (e.g., for shortcuts). 3562 * 3563 * @return density in terms of DPI 3564 */ 3565 public int getLauncherLargeIconDensity() { 3566 final Resources res = mContext.getResources(); 3567 final int density = res.getDisplayMetrics().densityDpi; 3568 final int sw = res.getConfiguration().smallestScreenWidthDp; 3569 3570 if (sw < 600) { 3571 // Smaller than approx 7" tablets, use the regular icon size. 3572 return density; 3573 } 3574 3575 switch (density) { 3576 case DisplayMetrics.DENSITY_LOW: 3577 return DisplayMetrics.DENSITY_MEDIUM; 3578 case DisplayMetrics.DENSITY_MEDIUM: 3579 return DisplayMetrics.DENSITY_HIGH; 3580 case DisplayMetrics.DENSITY_TV: 3581 return DisplayMetrics.DENSITY_XHIGH; 3582 case DisplayMetrics.DENSITY_HIGH: 3583 return DisplayMetrics.DENSITY_XHIGH; 3584 case DisplayMetrics.DENSITY_XHIGH: 3585 return DisplayMetrics.DENSITY_XXHIGH; 3586 case DisplayMetrics.DENSITY_XXHIGH: 3587 return DisplayMetrics.DENSITY_XHIGH * 2; 3588 default: 3589 // The density is some abnormal value. Return some other 3590 // abnormal value that is a reasonable scaling of it. 3591 return (int)((density*1.5f)+.5f); 3592 } 3593 } 3594 3595 /** 3596 * Get the preferred launcher icon size. This is used when custom drawables 3597 * are created (e.g., for shortcuts). 3598 * 3599 * @return dimensions of square icons in terms of pixels 3600 */ 3601 public int getLauncherLargeIconSize() { 3602 return getLauncherLargeIconSizeInner(mContext); 3603 } 3604 3605 static int getLauncherLargeIconSizeInner(Context context) { 3606 final Resources res = context.getResources(); 3607 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3608 final int sw = res.getConfiguration().smallestScreenWidthDp; 3609 3610 if (sw < 600) { 3611 // Smaller than approx 7" tablets, use the regular icon size. 3612 return size; 3613 } 3614 3615 final int density = res.getDisplayMetrics().densityDpi; 3616 3617 switch (density) { 3618 case DisplayMetrics.DENSITY_LOW: 3619 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3620 case DisplayMetrics.DENSITY_MEDIUM: 3621 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3622 case DisplayMetrics.DENSITY_TV: 3623 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3624 case DisplayMetrics.DENSITY_HIGH: 3625 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3626 case DisplayMetrics.DENSITY_XHIGH: 3627 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3628 case DisplayMetrics.DENSITY_XXHIGH: 3629 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3630 default: 3631 // The density is some abnormal value. Return some other 3632 // abnormal value that is a reasonable scaling of it. 3633 return (int)((size*1.5f) + .5f); 3634 } 3635 } 3636 3637 /** 3638 * Returns "true" if the user interface is currently being messed with 3639 * by a monkey. 3640 */ 3641 public static boolean isUserAMonkey() { 3642 try { 3643 return getService().isUserAMonkey(); 3644 } catch (RemoteException e) { 3645 throw e.rethrowFromSystemServer(); 3646 } 3647 } 3648 3649 /** 3650 * Returns "true" if device is running in a test harness. 3651 */ 3652 public static boolean isRunningInTestHarness() { 3653 return SystemProperties.getBoolean("ro.test_harness", false); 3654 } 3655 3656 /** 3657 * Returns the launch count of each installed package. 3658 * 3659 * @hide 3660 */ 3661 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3662 try { 3663 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3664 ServiceManager.getService("usagestats")); 3665 if (usageStatsService == null) { 3666 return new HashMap<String, Integer>(); 3667 } 3668 3669 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3670 ActivityThread.currentPackageName()); 3671 if (allPkgUsageStats == null) { 3672 return new HashMap<String, Integer>(); 3673 } 3674 3675 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3676 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3677 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3678 } 3679 3680 return launchCounts; 3681 } catch (RemoteException e) { 3682 Log.w(TAG, "Could not query launch counts", e); 3683 return new HashMap<String, Integer>(); 3684 } 3685 }*/ 3686 3687 /** @hide */ 3688 public static int checkComponentPermission(String permission, int uid, 3689 int owningUid, boolean exported) { 3690 // Root, system server get to do everything. 3691 final int appId = UserHandle.getAppId(uid); 3692 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3693 return PackageManager.PERMISSION_GRANTED; 3694 } 3695 // Isolated processes don't get any permissions. 3696 if (UserHandle.isIsolated(uid)) { 3697 return PackageManager.PERMISSION_DENIED; 3698 } 3699 // If there is a uid that owns whatever is being accessed, it has 3700 // blanket access to it regardless of the permissions it requires. 3701 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3702 return PackageManager.PERMISSION_GRANTED; 3703 } 3704 // If the target is not exported, then nobody else can get to it. 3705 if (!exported) { 3706 /* 3707 RuntimeException here = new RuntimeException("here"); 3708 here.fillInStackTrace(); 3709 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3710 here); 3711 */ 3712 return PackageManager.PERMISSION_DENIED; 3713 } 3714 if (permission == null) { 3715 return PackageManager.PERMISSION_GRANTED; 3716 } 3717 try { 3718 return AppGlobals.getPackageManager() 3719 .checkUidPermission(permission, uid); 3720 } catch (RemoteException e) { 3721 throw e.rethrowFromSystemServer(); 3722 } 3723 } 3724 3725 /** @hide */ 3726 public static int checkUidPermission(String permission, int uid) { 3727 try { 3728 return AppGlobals.getPackageManager() 3729 .checkUidPermission(permission, uid); 3730 } catch (RemoteException e) { 3731 throw e.rethrowFromSystemServer(); 3732 } 3733 } 3734 3735 /** 3736 * @hide 3737 * Helper for dealing with incoming user arguments to system service calls. 3738 * Takes care of checking permissions and converting USER_CURRENT to the 3739 * actual current user. 3740 * 3741 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3742 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3743 * @param userId The user id argument supplied by the caller -- this is the user 3744 * they want to run as. 3745 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3746 * to get a USER_ALL returned and deal with it correctly. If false, 3747 * an exception will be thrown if USER_ALL is supplied. 3748 * @param requireFull If true, the caller must hold 3749 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3750 * different user than their current process; otherwise they must hold 3751 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3752 * @param name Optional textual name of the incoming call; only for generating error messages. 3753 * @param callerPackage Optional package name of caller; only for error messages. 3754 * 3755 * @return Returns the user ID that the call should run as. Will always be a concrete 3756 * user number, unless <var>allowAll</var> is true in which case it could also be 3757 * USER_ALL. 3758 */ 3759 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3760 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3761 if (UserHandle.getUserId(callingUid) == userId) { 3762 return userId; 3763 } 3764 try { 3765 return getService().handleIncomingUser(callingPid, 3766 callingUid, userId, allowAll, requireFull, name, callerPackage); 3767 } catch (RemoteException e) { 3768 throw e.rethrowFromSystemServer(); 3769 } 3770 } 3771 3772 /** 3773 * Gets the userId of the current foreground user. Requires system permissions. 3774 * @hide 3775 */ 3776 @SystemApi 3777 public static int getCurrentUser() { 3778 UserInfo ui; 3779 try { 3780 ui = getService().getCurrentUser(); 3781 return ui != null ? ui.id : 0; 3782 } catch (RemoteException e) { 3783 throw e.rethrowFromSystemServer(); 3784 } 3785 } 3786 3787 /** 3788 * @param userid the user's id. Zero indicates the default user. 3789 * @hide 3790 */ 3791 public boolean switchUser(int userid) { 3792 try { 3793 return getService().switchUser(userid); 3794 } catch (RemoteException e) { 3795 throw e.rethrowFromSystemServer(); 3796 } 3797 } 3798 3799 /** 3800 * Logs out current current foreground user by switching to the system user and stopping the 3801 * user being switched from. 3802 * @hide 3803 */ 3804 public static void logoutCurrentUser() { 3805 int currentUser = ActivityManager.getCurrentUser(); 3806 if (currentUser != UserHandle.USER_SYSTEM) { 3807 try { 3808 getService().switchUser(UserHandle.USER_SYSTEM); 3809 getService().stopUser(currentUser, /* force= */ false, null); 3810 } catch (RemoteException e) { 3811 e.rethrowFromSystemServer(); 3812 } 3813 } 3814 } 3815 3816 /** {@hide} */ 3817 public static final int FLAG_OR_STOPPED = 1 << 0; 3818 /** {@hide} */ 3819 public static final int FLAG_AND_LOCKED = 1 << 1; 3820 /** {@hide} */ 3821 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3822 /** {@hide} */ 3823 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3824 3825 /** 3826 * Return whether the given user is actively running. This means that 3827 * the user is in the "started" state, not "stopped" -- it is currently 3828 * allowed to run code through scheduled alarms, receiving broadcasts, 3829 * etc. A started user may be either the current foreground user or a 3830 * background user; the result here does not distinguish between the two. 3831 * @param userId the user's id. Zero indicates the default user. 3832 * @hide 3833 */ 3834 public boolean isUserRunning(int userId) { 3835 try { 3836 return getService().isUserRunning(userId, 0); 3837 } catch (RemoteException e) { 3838 throw e.rethrowFromSystemServer(); 3839 } 3840 } 3841 3842 /** {@hide} */ 3843 public boolean isVrModePackageEnabled(ComponentName component) { 3844 try { 3845 return getService().isVrModePackageEnabled(component); 3846 } catch (RemoteException e) { 3847 throw e.rethrowFromSystemServer(); 3848 } 3849 } 3850 3851 /** 3852 * Perform a system dump of various state associated with the given application 3853 * package name. This call blocks while the dump is being performed, so should 3854 * not be done on a UI thread. The data will be written to the given file 3855 * descriptor as text. An application must hold the 3856 * {@link android.Manifest.permission#DUMP} permission to make this call. 3857 * @param fd The file descriptor that the dump should be written to. The file 3858 * descriptor is <em>not</em> closed by this function; the caller continues to 3859 * own it. 3860 * @param packageName The name of the package that is to be dumped. 3861 */ 3862 public void dumpPackageState(FileDescriptor fd, String packageName) { 3863 dumpPackageStateStatic(fd, packageName); 3864 } 3865 3866 /** 3867 * @hide 3868 */ 3869 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3870 FileOutputStream fout = new FileOutputStream(fd); 3871 PrintWriter pw = new FastPrintWriter(fout); 3872 dumpService(pw, fd, "package", new String[] { packageName }); 3873 pw.println(); 3874 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3875 "-a", "package", packageName }); 3876 pw.println(); 3877 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3878 pw.println(); 3879 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3880 pw.println(); 3881 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3882 pw.println(); 3883 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3884 pw.flush(); 3885 } 3886 3887 /** 3888 * @hide 3889 */ 3890 public static boolean isSystemReady() { 3891 if (!sSystemReady) { 3892 if (ActivityThread.isSystem()) { 3893 sSystemReady = 3894 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3895 } else { 3896 // Since this is being called from outside system server, system should be 3897 // ready by now. 3898 sSystemReady = true; 3899 } 3900 } 3901 return sSystemReady; 3902 } 3903 3904 /** 3905 * @hide 3906 */ 3907 public static void broadcastStickyIntent(Intent intent, int userId) { 3908 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3909 } 3910 3911 /** 3912 * Convenience for sending a sticky broadcast. For internal use only. 3913 * 3914 * @hide 3915 */ 3916 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3917 try { 3918 getService().broadcastIntent( 3919 null, intent, null, null, Activity.RESULT_OK, null, null, 3920 null /*permission*/, appOp, null, false, true, userId); 3921 } catch (RemoteException ex) { 3922 } 3923 } 3924 3925 /** 3926 * @hide 3927 */ 3928 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3929 String tag) { 3930 try { 3931 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3932 sourceUid, sourcePkg, tag); 3933 } catch (RemoteException ex) { 3934 } 3935 } 3936 3937 /** 3938 * @hide 3939 */ 3940 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3941 try { 3942 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3943 } catch (RemoteException ex) { 3944 } 3945 } 3946 3947 /** 3948 * @hide 3949 */ 3950 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3951 try { 3952 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3953 } catch (RemoteException ex) { 3954 } 3955 } 3956 3957 /** 3958 * @hide 3959 */ 3960 public static IActivityManager getService() { 3961 return IActivityManagerSingleton.get(); 3962 } 3963 3964 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3965 new Singleton<IActivityManager>() { 3966 @Override 3967 protected IActivityManager create() { 3968 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3969 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3970 return am; 3971 } 3972 }; 3973 3974 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3975 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3976 IBinder service = ServiceManager.checkService(name); 3977 if (service == null) { 3978 pw.println(" (Service not found)"); 3979 return; 3980 } 3981 TransferPipe tp = null; 3982 try { 3983 pw.flush(); 3984 tp = new TransferPipe(); 3985 tp.setBufferPrefix(" "); 3986 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3987 tp.go(fd, 10000); 3988 } catch (Throwable e) { 3989 if (tp != null) { 3990 tp.kill(); 3991 } 3992 pw.println("Failure dumping service:"); 3993 e.printStackTrace(pw); 3994 } 3995 } 3996 3997 /** 3998 * Request that the system start watching for the calling process to exceed a pss 3999 * size as given here. Once called, the system will look for any occasions where it 4000 * sees the associated process with a larger pss size and, when this happens, automatically 4001 * pull a heap dump from it and allow the user to share the data. Note that this request 4002 * continues running even if the process is killed and restarted. To remove the watch, 4003 * use {@link #clearWatchHeapLimit()}. 4004 * 4005 * <p>This API only work if the calling process has been marked as 4006 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4007 * (userdebug or eng) build.</p> 4008 * 4009 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4010 * handle heap limit reports themselves.</p> 4011 * 4012 * @param pssSize The size in bytes to set the limit at. 4013 */ 4014 public void setWatchHeapLimit(long pssSize) { 4015 try { 4016 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4017 mContext.getPackageName()); 4018 } catch (RemoteException e) { 4019 throw e.rethrowFromSystemServer(); 4020 } 4021 } 4022 4023 /** 4024 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4025 * If your package has an activity handling this action, it will be launched with the 4026 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4027 * match the activty must support this action and a MIME type of "*/*". 4028 */ 4029 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4030 4031 /** 4032 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4033 */ 4034 public void clearWatchHeapLimit() { 4035 try { 4036 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4037 } catch (RemoteException e) { 4038 throw e.rethrowFromSystemServer(); 4039 } 4040 } 4041 4042 /** 4043 * @hide 4044 */ 4045 public void startLockTaskMode(int taskId) { 4046 try { 4047 getService().startLockTaskModeById(taskId); 4048 } catch (RemoteException e) { 4049 throw e.rethrowFromSystemServer(); 4050 } 4051 } 4052 4053 /** 4054 * @hide 4055 */ 4056 public void stopLockTaskMode() { 4057 try { 4058 getService().stopLockTaskMode(); 4059 } catch (RemoteException e) { 4060 throw e.rethrowFromSystemServer(); 4061 } 4062 } 4063 4064 /** 4065 * Return whether currently in lock task mode. When in this mode 4066 * no new tasks can be created or switched to. 4067 * 4068 * @see Activity#startLockTask() 4069 * 4070 * @deprecated Use {@link #getLockTaskModeState} instead. 4071 */ 4072 @Deprecated 4073 public boolean isInLockTaskMode() { 4074 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4075 } 4076 4077 /** 4078 * Return the current state of task locking. The three possible outcomes 4079 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4080 * and {@link #LOCK_TASK_MODE_PINNED}. 4081 * 4082 * @see Activity#startLockTask() 4083 */ 4084 public int getLockTaskModeState() { 4085 try { 4086 return getService().getLockTaskModeState(); 4087 } catch (RemoteException e) { 4088 throw e.rethrowFromSystemServer(); 4089 } 4090 } 4091 4092 /** 4093 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4094 * thread can be a VR thread in a process at a time, and that thread may be subject to 4095 * restrictions on the amount of time it can run. 4096 * 4097 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4098 * method will return to normal operation, and calling this method will do nothing while 4099 * persistent VR mode is enabled. 4100 * 4101 * To reset the VR thread for an application, a tid of 0 can be passed. 4102 * 4103 * @see android.os.Process#myTid() 4104 * @param tid tid of the VR thread 4105 */ 4106 public static void setVrThread(int tid) { 4107 try { 4108 getService().setVrThread(tid); 4109 } catch (RemoteException e) { 4110 // pass 4111 } 4112 } 4113 4114 /** 4115 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4116 * beyond a single process. It requires holding the 4117 * {@link android.Manifest.permission#RESTRICTED_VR_ACCESS} permission. Only one thread can be a 4118 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4119 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4120 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4121 * persistent VR thread loses its new scheduling priority; this method must be called again to 4122 * set the persistent thread. 4123 * 4124 * To reset the persistent VR thread, a tid of 0 can be passed. 4125 * 4126 * @see android.os.Process#myTid() 4127 * @param tid tid of the VR thread 4128 * @hide 4129 */ 4130 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4131 public static void setPersistentVrThread(int tid) { 4132 try { 4133 getService().setPersistentVrThread(tid); 4134 } catch (RemoteException e) { 4135 // pass 4136 } 4137 } 4138 4139 /** 4140 * The AppTask allows you to manage your own application's tasks. 4141 * See {@link android.app.ActivityManager#getAppTasks()} 4142 */ 4143 public static class AppTask { 4144 private IAppTask mAppTaskImpl; 4145 4146 /** @hide */ 4147 public AppTask(IAppTask task) { 4148 mAppTaskImpl = task; 4149 } 4150 4151 /** 4152 * Finishes all activities in this task and removes it from the recent tasks list. 4153 */ 4154 public void finishAndRemoveTask() { 4155 try { 4156 mAppTaskImpl.finishAndRemoveTask(); 4157 } catch (RemoteException e) { 4158 throw e.rethrowFromSystemServer(); 4159 } 4160 } 4161 4162 /** 4163 * Get the RecentTaskInfo associated with this task. 4164 * 4165 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4166 */ 4167 public RecentTaskInfo getTaskInfo() { 4168 try { 4169 return mAppTaskImpl.getTaskInfo(); 4170 } catch (RemoteException e) { 4171 throw e.rethrowFromSystemServer(); 4172 } 4173 } 4174 4175 /** 4176 * Bring this task to the foreground. If it contains activities, they will be 4177 * brought to the foreground with it and their instances re-created if needed. 4178 * If it doesn't contain activities, the root activity of the task will be 4179 * re-launched. 4180 */ 4181 public void moveToFront() { 4182 try { 4183 mAppTaskImpl.moveToFront(); 4184 } catch (RemoteException e) { 4185 throw e.rethrowFromSystemServer(); 4186 } 4187 } 4188 4189 /** 4190 * Start an activity in this task. Brings the task to the foreground. If this task 4191 * is not currently active (that is, its id < 0), then a new activity for the given 4192 * Intent will be launched as the root of the task and the task brought to the 4193 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4194 * an activity to launch in a new task, then a new activity for the given Intent will 4195 * be launched on top of the task and the task brought to the foreground. If this 4196 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4197 * or would otherwise be launched in to a new task, then the activity not launched but 4198 * this task be brought to the foreground and a new intent delivered to the top 4199 * activity if appropriate. 4200 * 4201 * <p>In other words, you generally want to use an Intent here that does not specify 4202 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4203 * and let the system do the right thing.</p> 4204 * 4205 * @param intent The Intent describing the new activity to be launched on the task. 4206 * @param options Optional launch options. 4207 * 4208 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4209 */ 4210 public void startActivity(Context context, Intent intent, Bundle options) { 4211 ActivityThread thread = ActivityThread.currentActivityThread(); 4212 thread.getInstrumentation().execStartActivityFromAppTask(context, 4213 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4214 } 4215 4216 /** 4217 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4218 * Intent of this AppTask. 4219 * 4220 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4221 * be set; otherwise, it will be cleared. 4222 */ 4223 public void setExcludeFromRecents(boolean exclude) { 4224 try { 4225 mAppTaskImpl.setExcludeFromRecents(exclude); 4226 } catch (RemoteException e) { 4227 throw e.rethrowFromSystemServer(); 4228 } 4229 } 4230 } 4231} 4232