ActivityManager.java revision 15eb998e65eceef991a55cf15dba9f1769b182db
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.RequiresPermission; 24import android.annotation.SystemApi; 25import android.annotation.TestApi; 26import android.content.pm.ActivityInfo; 27import android.content.res.Configuration; 28import android.graphics.Canvas; 29import android.graphics.GraphicBuffer; 30import android.graphics.Matrix; 31import android.graphics.Point; 32import android.os.BatteryStats; 33import android.os.IBinder; 34import android.os.ParcelFileDescriptor; 35 36import com.android.internal.app.procstats.ProcessStats; 37import com.android.internal.os.RoSystemProperties; 38import com.android.internal.os.TransferPipe; 39import com.android.internal.util.FastPrintWriter; 40import com.android.server.LocalServices; 41 42import android.content.ComponentName; 43import android.content.Context; 44import android.content.Intent; 45import android.content.UriPermission; 46import android.content.pm.ApplicationInfo; 47import android.content.pm.ConfigurationInfo; 48import android.content.pm.IPackageDataObserver; 49import android.content.pm.PackageManager; 50import android.content.pm.ParceledListSlice; 51import android.content.pm.UserInfo; 52import android.content.res.Resources; 53import android.graphics.Bitmap; 54import android.graphics.Color; 55import android.graphics.Rect; 56import android.os.Bundle; 57import android.os.Debug; 58import android.os.Handler; 59import android.os.Parcel; 60import android.os.Parcelable; 61import android.os.Process; 62import android.os.RemoteException; 63import android.os.ServiceManager; 64import android.os.SystemProperties; 65import android.os.UserHandle; 66import android.text.TextUtils; 67import android.util.ArrayMap; 68import android.util.DisplayMetrics; 69import android.util.Singleton; 70import android.util.Size; 71 72import org.xmlpull.v1.XmlSerializer; 73 74import java.io.FileDescriptor; 75import java.io.FileOutputStream; 76import java.io.IOException; 77import java.io.PrintWriter; 78import java.lang.annotation.Retention; 79import java.lang.annotation.RetentionPolicy; 80import java.util.ArrayList; 81import java.util.List; 82 83/** 84 * <p> 85 * This class gives information about, and interacts 86 * with, activities, services, and the containing 87 * process. 88 * </p> 89 * 90 * <p> 91 * A number of the methods in this class are for 92 * debugging or informational purposes and they should 93 * not be used to affect any runtime behavior of 94 * your app. These methods are called out as such in 95 * the method level documentation. 96 * </p> 97 * 98 *<p> 99 * Most application developers should not have the need to 100 * use this class, most of whose methods are for specialized 101 * use cases. However, a few methods are more broadly applicable. 102 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 103 * enables your app to detect whether it is running on a low-memory device, 104 * and behave accordingly. 105 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 106 * is for apps with reset-data functionality. 107 * </p> 108 * 109 * <p> 110 * In some special use cases, where an app interacts with 111 * its Task stack, the app may use the 112 * {@link android.app.ActivityManager.AppTask} and 113 * {@link android.app.ActivityManager.RecentTaskInfo} inner 114 * classes. However, in general, the methods in this class should 115 * be used for testing and debugging purposes only. 116 * </p> 117 */ 118public class ActivityManager { 119 private static String TAG = "ActivityManager"; 120 121 private static int gMaxRecentTasks = -1; 122 123 private static final int NUM_ALLOWED_PIP_ACTIONS = 3; 124 125 private final Context mContext; 126 127 private static volatile boolean sSystemReady = false; 128 129 /** 130 * System property to enable task snapshots. 131 * @hide 132 */ 133 public final static boolean ENABLE_TASK_SNAPSHOTS; 134 135 static { 136 ENABLE_TASK_SNAPSHOTS = SystemProperties.getBoolean("persist.enable_task_snapshots", true); 137 } 138 139 static final class UidObserver extends IUidObserver.Stub { 140 final OnUidImportanceListener mListener; 141 142 UidObserver(OnUidImportanceListener listener) { 143 mListener = listener; 144 } 145 146 @Override 147 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 148 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportance(procState)); 149 } 150 151 @Override 152 public void onUidGone(int uid, boolean disabled) { 153 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 154 } 155 156 @Override 157 public void onUidActive(int uid) { 158 } 159 160 @Override 161 public void onUidIdle(int uid, boolean disabled) { 162 } 163 } 164 165 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 166 167 /** 168 * Defines acceptable types of bugreports. 169 * @hide 170 */ 171 @Retention(RetentionPolicy.SOURCE) 172 @IntDef({ 173 BUGREPORT_OPTION_FULL, 174 BUGREPORT_OPTION_INTERACTIVE, 175 BUGREPORT_OPTION_REMOTE, 176 BUGREPORT_OPTION_WEAR, 177 BUGREPORT_OPTION_TELEPHONY 178 }) 179 public @interface BugreportMode {} 180 /** 181 * Takes a bugreport without user interference (and hence causing less 182 * interference to the system), but includes all sections. 183 * @hide 184 */ 185 public static final int BUGREPORT_OPTION_FULL = 0; 186 /** 187 * Allows user to monitor progress and enter additional data; might not include all 188 * sections. 189 * @hide 190 */ 191 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 192 /** 193 * Takes a bugreport requested remotely by administrator of the Device Owner app, 194 * not the device's user. 195 * @hide 196 */ 197 public static final int BUGREPORT_OPTION_REMOTE = 2; 198 /** 199 * Takes a bugreport on a wearable device. 200 * @hide 201 */ 202 public static final int BUGREPORT_OPTION_WEAR = 3; 203 204 /** 205 * Takes a lightweight version of bugreport that only includes a few, urgent sections 206 * used to report telephony bugs. 207 * @hide 208 */ 209 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 210 211 /** 212 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 213 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 214 * uninstalled in lieu of the declaring one. The package named here must be 215 * signed with the same certificate as the one declaring the {@code <meta-data>}. 216 */ 217 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 218 219 /** 220 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 221 * @hide 222 */ 223 public static final int START_VOICE_HIDDEN_SESSION = -10; 224 225 /** 226 * Result for IActivityManager.startVoiceActivity: active session does not match 227 * the requesting token. 228 * @hide 229 */ 230 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 231 232 /** 233 * Result for IActivityManager.startActivity: trying to start a background user 234 * activity that shouldn't be displayed for all users. 235 * @hide 236 */ 237 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 238 239 /** 240 * Result for IActivityManager.startActivity: trying to start an activity under voice 241 * control when that activity does not support the VOICE category. 242 * @hide 243 */ 244 public static final int START_NOT_VOICE_COMPATIBLE = -7; 245 246 /** 247 * Result for IActivityManager.startActivity: an error where the 248 * start had to be canceled. 249 * @hide 250 */ 251 public static final int START_CANCELED = -6; 252 253 /** 254 * Result for IActivityManager.startActivity: an error where the 255 * thing being started is not an activity. 256 * @hide 257 */ 258 public static final int START_NOT_ACTIVITY = -5; 259 260 /** 261 * Result for IActivityManager.startActivity: an error where the 262 * caller does not have permission to start the activity. 263 * @hide 264 */ 265 public static final int START_PERMISSION_DENIED = -4; 266 267 /** 268 * Result for IActivityManager.startActivity: an error where the 269 * caller has requested both to forward a result and to receive 270 * a result. 271 * @hide 272 */ 273 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 274 275 /** 276 * Result for IActivityManager.startActivity: an error where the 277 * requested class is not found. 278 * @hide 279 */ 280 public static final int START_CLASS_NOT_FOUND = -2; 281 282 /** 283 * Result for IActivityManager.startActivity: an error where the 284 * given Intent could not be resolved to an activity. 285 * @hide 286 */ 287 public static final int START_INTENT_NOT_RESOLVED = -1; 288 289 /** 290 * Result for IActivityManaqer.startActivity: the activity was started 291 * successfully as normal. 292 * @hide 293 */ 294 public static final int START_SUCCESS = 0; 295 296 /** 297 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 298 * be executed if it is the recipient, and that is indeed the case. 299 * @hide 300 */ 301 public static final int START_RETURN_INTENT_TO_CALLER = 1; 302 303 /** 304 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 305 * a task was simply brought to the foreground. 306 * @hide 307 */ 308 public static final int START_TASK_TO_FRONT = 2; 309 310 /** 311 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 312 * the given Intent was given to the existing top activity. 313 * @hide 314 */ 315 public static final int START_DELIVERED_TO_TOP = 3; 316 317 /** 318 * Result for IActivityManaqer.startActivity: request was canceled because 319 * app switches are temporarily canceled to ensure the user's last request 320 * (such as pressing home) is performed. 321 * @hide 322 */ 323 public static final int START_SWITCHES_CANCELED = 4; 324 325 /** 326 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 327 * while in Lock Task Mode. 328 * @hide 329 */ 330 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 331 332 /** 333 * Flag for IActivityManaqer.startActivity: do special start mode where 334 * a new activity is launched only if it is needed. 335 * @hide 336 */ 337 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 338 339 /** 340 * Flag for IActivityManaqer.startActivity: launch the app for 341 * debugging. 342 * @hide 343 */ 344 public static final int START_FLAG_DEBUG = 1<<1; 345 346 /** 347 * Flag for IActivityManaqer.startActivity: launch the app for 348 * allocation tracking. 349 * @hide 350 */ 351 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 352 353 /** 354 * Flag for IActivityManaqer.startActivity: launch the app with 355 * native debugging support. 356 * @hide 357 */ 358 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 359 360 /** 361 * Result for IActivityManaqer.broadcastIntent: success! 362 * @hide 363 */ 364 public static final int BROADCAST_SUCCESS = 0; 365 366 /** 367 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 368 * a sticky intent without appropriate permission. 369 * @hide 370 */ 371 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 372 373 /** 374 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 375 * to a stopped user. Fail. 376 * @hide 377 */ 378 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 379 380 /** 381 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 382 * for a sendBroadcast operation. 383 * @hide 384 */ 385 public static final int INTENT_SENDER_BROADCAST = 1; 386 387 /** 388 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 389 * for a startActivity operation. 390 * @hide 391 */ 392 public static final int INTENT_SENDER_ACTIVITY = 2; 393 394 /** 395 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 396 * for an activity result operation. 397 * @hide 398 */ 399 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 400 401 /** 402 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 403 * for a startService operation. 404 * @hide 405 */ 406 public static final int INTENT_SENDER_SERVICE = 4; 407 408 /** 409 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 410 * for a startForegroundService operation. 411 * @hide 412 */ 413 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 414 415 /** @hide User operation call: success! */ 416 public static final int USER_OP_SUCCESS = 0; 417 418 /** @hide User operation call: given user id is not known. */ 419 public static final int USER_OP_UNKNOWN_USER = -1; 420 421 /** @hide User operation call: given user id is the current user, can't be stopped. */ 422 public static final int USER_OP_IS_CURRENT = -2; 423 424 /** @hide User operation call: system user can't be stopped. */ 425 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 426 427 /** @hide User operation call: one of related users cannot be stopped. */ 428 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 429 430 /** @hide Not a real process state. */ 431 public static final int PROCESS_STATE_UNKNOWN = -1; 432 433 /** @hide Process is a persistent system process. */ 434 public static final int PROCESS_STATE_PERSISTENT = 0; 435 436 /** @hide Process is a persistent system process and is doing UI. */ 437 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 438 439 /** @hide Process is hosting the current top activities. Note that this covers 440 * all activities that are visible to the user. */ 441 public static final int PROCESS_STATE_TOP = 2; 442 443 /** @hide Process is hosting a foreground service due to a system binding. */ 444 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 445 446 /** @hide Process is hosting a foreground service. */ 447 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 448 449 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 450 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 451 452 /** @hide Process is important to the user, and something they are aware of. */ 453 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 454 455 /** @hide Process is important to the user, but not something they are aware of. */ 456 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 457 458 /** @hide Process is in the background running a backup/restore operation. */ 459 public static final int PROCESS_STATE_BACKUP = 8; 460 461 /** @hide Process is in the background, but it can't restore its state so we want 462 * to try to avoid killing it. */ 463 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 464 465 /** @hide Process is in the background running a service. Unlike oom_adj, this level 466 * is used for both the normal running in background state and the executing 467 * operations state. */ 468 public static final int PROCESS_STATE_SERVICE = 10; 469 470 /** @hide Process is in the background running a receiver. Note that from the 471 * perspective of oom_adj receivers run at a higher foreground level, but for our 472 * prioritization here that is not necessary and putting them below services means 473 * many fewer changes in some process states as they receive broadcasts. */ 474 public static final int PROCESS_STATE_RECEIVER = 11; 475 476 /** @hide Process is in the background but hosts the home activity. */ 477 public static final int PROCESS_STATE_HOME = 12; 478 479 /** @hide Process is in the background but hosts the last shown activity. */ 480 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 481 482 /** @hide Process is being cached for later use and contains activities. */ 483 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 484 485 /** @hide Process is being cached for later use and is a client of another cached 486 * process that contains activities. */ 487 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 488 489 /** @hide Process is being cached for later use and is empty. */ 490 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 491 492 /** @hide Process does not exist. */ 493 public static final int PROCESS_STATE_NONEXISTENT = 17; 494 495 /** @hide The lowest process state number */ 496 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 497 498 /** @hide The highest process state number */ 499 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 500 501 /** @hide Should this process state be considered a background state? */ 502 public static final boolean isProcStateBackground(int procState) { 503 return procState >= PROCESS_STATE_BACKUP; 504 } 505 506 /** @hide requestType for assist context: only basic information. */ 507 public static final int ASSIST_CONTEXT_BASIC = 0; 508 509 /** @hide requestType for assist context: generate full AssistStructure. */ 510 public static final int ASSIST_CONTEXT_FULL = 1; 511 512 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 513 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 514 515 /** @hide Flag for registerUidObserver: report changes in process state. */ 516 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 517 518 /** @hide Flag for registerUidObserver: report uid gone. */ 519 public static final int UID_OBSERVER_GONE = 1<<1; 520 521 /** @hide Flag for registerUidObserver: report uid has become idle. */ 522 public static final int UID_OBSERVER_IDLE = 1<<2; 523 524 /** @hide Flag for registerUidObserver: report uid has become active. */ 525 public static final int UID_OBSERVER_ACTIVE = 1<<3; 526 527 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 528 public static final int APP_START_MODE_NORMAL = 0; 529 530 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 531 public static final int APP_START_MODE_DELAYED = 1; 532 533 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 534 * rigid errors (throwing exception). */ 535 public static final int APP_START_MODE_DELAYED_RIGID = 2; 536 537 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 538 * launches; this is the mode for ephemeral apps. */ 539 public static final int APP_START_MODE_DISABLED = 3; 540 541 /** 542 * Lock task mode is not active. 543 */ 544 public static final int LOCK_TASK_MODE_NONE = 0; 545 546 /** 547 * Full lock task mode is active. 548 */ 549 public static final int LOCK_TASK_MODE_LOCKED = 1; 550 551 /** 552 * App pinning mode is active. 553 */ 554 public static final int LOCK_TASK_MODE_PINNED = 2; 555 556 Point mAppTaskThumbnailSize; 557 558 /*package*/ ActivityManager(Context context, Handler handler) { 559 mContext = context; 560 } 561 562 /** 563 * Screen compatibility mode: the application most always run in 564 * compatibility mode. 565 * @hide 566 */ 567 public static final int COMPAT_MODE_ALWAYS = -1; 568 569 /** 570 * Screen compatibility mode: the application can never run in 571 * compatibility mode. 572 * @hide 573 */ 574 public static final int COMPAT_MODE_NEVER = -2; 575 576 /** 577 * Screen compatibility mode: unknown. 578 * @hide 579 */ 580 public static final int COMPAT_MODE_UNKNOWN = -3; 581 582 /** 583 * Screen compatibility mode: the application currently has compatibility 584 * mode disabled. 585 * @hide 586 */ 587 public static final int COMPAT_MODE_DISABLED = 0; 588 589 /** 590 * Screen compatibility mode: the application currently has compatibility 591 * mode enabled. 592 * @hide 593 */ 594 public static final int COMPAT_MODE_ENABLED = 1; 595 596 /** 597 * Screen compatibility mode: request to toggle the application's 598 * compatibility mode. 599 * @hide 600 */ 601 public static final int COMPAT_MODE_TOGGLE = 2; 602 603 /** @hide */ 604 public static class StackId { 605 /** Invalid stack ID. */ 606 public static final int INVALID_STACK_ID = -1; 607 608 /** First static stack ID. */ 609 public static final int FIRST_STATIC_STACK_ID = 0; 610 611 /** Home activity stack ID. */ 612 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 613 614 /** ID of stack where fullscreen activities are normally launched into. */ 615 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 616 617 /** ID of stack where freeform/resized activities are normally launched into. */ 618 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 619 620 /** ID of stack that occupies a dedicated region of the screen. */ 621 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 622 623 /** ID of stack that always on top (always visible) when it exist. */ 624 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 625 626 /** ID of stack that contains the Recents activity. */ 627 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 628 629 /** ID of stack that contains activities launched by the assistant. */ 630 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 631 632 /** Last static stack stack ID. */ 633 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 634 635 /** Start of ID range used by stacks that are created dynamically. */ 636 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 637 638 public static boolean isStaticStack(int stackId) { 639 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 640 } 641 642 public static boolean isDynamicStack(int stackId) { 643 return stackId >= FIRST_DYNAMIC_STACK_ID; 644 } 645 646 /** 647 * Returns true if the activities contained in the input stack display a shadow around 648 * their border. 649 */ 650 public static boolean hasWindowShadow(int stackId) { 651 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 652 } 653 654 /** 655 * Returns true if the activities contained in the input stack display a decor view. 656 */ 657 public static boolean hasWindowDecor(int stackId) { 658 return stackId == FREEFORM_WORKSPACE_STACK_ID; 659 } 660 661 /** 662 * Returns true if the tasks contained in the stack can be resized independently of the 663 * stack. 664 */ 665 public static boolean isTaskResizeAllowed(int stackId) { 666 return stackId == FREEFORM_WORKSPACE_STACK_ID; 667 } 668 669 /** Returns true if the task bounds should persist across power cycles. */ 670 public static boolean persistTaskBounds(int stackId) { 671 return stackId == FREEFORM_WORKSPACE_STACK_ID; 672 } 673 674 /** 675 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 676 */ 677 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 678 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 679 } 680 681 /** 682 * Returns true if we try to maintain focus in the current stack when the top activity 683 * finishes. 684 */ 685 public static boolean keepFocusInStackIfPossible(int stackId) { 686 return stackId == FREEFORM_WORKSPACE_STACK_ID 687 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 688 } 689 690 /** 691 * Returns true if Stack size is affected by the docked stack changing size. 692 */ 693 public static boolean isResizeableByDockedStack(int stackId) { 694 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 695 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 696 } 697 698 /** 699 * Returns true if the size of tasks in the input stack are affected by the docked stack 700 * changing size. 701 */ 702 public static boolean isTaskResizeableByDockedStack(int stackId) { 703 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 704 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 705 && stackId != ASSISTANT_STACK_ID; 706 } 707 708 /** 709 * Returns true if the input stack is affected by drag resizing. 710 */ 711 public static boolean isStackAffectedByDragResizing(int stackId) { 712 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 713 && stackId != ASSISTANT_STACK_ID; 714 } 715 716 /** 717 * Returns true if the windows of tasks being moved to the target stack from the source 718 * stack should be replaced, meaning that window manager will keep the old window around 719 * until the new is ready. 720 */ 721 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 722 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 723 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 724 } 725 726 /** 727 * Return whether a stackId is a stack containing floating windows. Floating windows 728 * are laid out differently as they are allowed to extend past the display bounds 729 * without overscan insets. 730 */ 731 public static boolean tasksAreFloating(int stackId) { 732 return stackId == FREEFORM_WORKSPACE_STACK_ID 733 || stackId == PINNED_STACK_ID; 734 } 735 736 /** 737 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 738 * are generally fullscreen stacks. 739 */ 740 public static boolean isBackdropToTranslucentActivity(int stackId) { 741 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 742 || stackId == ASSISTANT_STACK_ID; 743 } 744 745 /** 746 * Returns true if animation specs should be constructed for app transition that moves 747 * the task to the specified stack. 748 */ 749 public static boolean useAnimationSpecForAppTransition(int stackId) { 750 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 751 // reboots. 752 return stackId == FREEFORM_WORKSPACE_STACK_ID 753 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 754 || stackId == ASSISTANT_STACK_ID 755 || stackId == DOCKED_STACK_ID 756 || stackId == INVALID_STACK_ID; 757 } 758 759 /** 760 * Returns true if the windows in the stack can receive input keys. 761 */ 762 public static boolean canReceiveKeys(int stackId) { 763 return stackId != PINNED_STACK_ID; 764 } 765 766 /** 767 * Returns true if the stack can be visible above lockscreen. 768 */ 769 public static boolean isAllowedOverLockscreen(int stackId) { 770 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 771 stackId == ASSISTANT_STACK_ID; 772 } 773 774 /** 775 * Returns true if activities from stasks in the given {@param stackId} are allowed to 776 * enter picture-in-picture. 777 */ 778 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 779 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 780 stackId != RECENTS_STACK_ID; 781 } 782 783 public static boolean isAlwaysOnTop(int stackId) { 784 return stackId == PINNED_STACK_ID; 785 } 786 787 /** 788 * Returns true if the top task in the task is allowed to return home when finished and 789 * there are other tasks in the stack. 790 */ 791 public static boolean allowTopTaskToReturnHome(int stackId) { 792 return stackId != PINNED_STACK_ID; 793 } 794 795 /** 796 * Returns true if the stack should be resized to match the bounds specified by 797 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 798 */ 799 public static boolean resizeStackWithLaunchBounds(int stackId) { 800 return stackId == PINNED_STACK_ID; 801 } 802 803 /** 804 * Returns true if any visible windows belonging to apps in this stack should be kept on 805 * screen when the app is killed due to something like the low memory killer. 806 */ 807 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 808 return stackId != PINNED_STACK_ID; 809 } 810 811 /** 812 * Returns true if the backdrop on the client side should match the frame of the window. 813 * Returns false, if the backdrop should be fullscreen. 814 */ 815 public static boolean useWindowFrameForBackdrop(int stackId) { 816 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 817 } 818 819 /** 820 * Returns true if a window from the specified stack with {@param stackId} are normally 821 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 822 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 823 * etc. 824 */ 825 public static boolean normallyFullscreenWindows(int stackId) { 826 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 827 && stackId != DOCKED_STACK_ID; 828 } 829 830 /** 831 * Returns true if the input stack id should only be present on a device that supports 832 * multi-window mode. 833 * @see android.app.ActivityManager#supportsMultiWindow 834 */ 835 public static boolean isMultiWindowStack(int stackId) { 836 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 837 || stackId == DOCKED_STACK_ID; 838 } 839 840 /** 841 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 842 */ 843 public static boolean isHomeOrRecentsStack(int stackId) { 844 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 845 } 846 847 /** 848 * Returns true if activities contained in this stack can request visible behind by 849 * calling {@link Activity#requestVisibleBehind}. 850 */ 851 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 852 return stackId == FULLSCREEN_WORKSPACE_STACK_ID || 853 stackId == ASSISTANT_STACK_ID; 854 } 855 856 /** 857 * Returns true if this stack may be scaled without resizing, and windows within may need 858 * to be configured as such. 859 */ 860 public static boolean windowsAreScaleable(int stackId) { 861 return stackId == PINNED_STACK_ID; 862 } 863 864 /** 865 * Returns true if windows in this stack should be given move animations by default. 866 */ 867 public static boolean hasMovementAnimations(int stackId) { 868 return stackId != PINNED_STACK_ID; 869 } 870 871 /** Returns true if the input stack and its content can affect the device orientation. */ 872 public static boolean canSpecifyOrientation(int stackId) { 873 return stackId == HOME_STACK_ID 874 || stackId == RECENTS_STACK_ID 875 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 876 || stackId == ASSISTANT_STACK_ID 877 || isDynamicStack(stackId); 878 } 879 } 880 881 /** 882 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 883 * specifies the position of the created docked stack at the top half of the screen if 884 * in portrait mode or at the left half of the screen if in landscape mode. 885 * @hide 886 */ 887 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 888 889 /** 890 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 891 * specifies the position of the created docked stack at the bottom half of the screen if 892 * in portrait mode or at the right half of the screen if in landscape mode. 893 * @hide 894 */ 895 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 896 897 /** 898 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 899 * that the resize doesn't need to preserve the window, and can be skipped if bounds 900 * is unchanged. This mode is used by window manager in most cases. 901 * @hide 902 */ 903 public static final int RESIZE_MODE_SYSTEM = 0; 904 905 /** 906 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 907 * that the resize should preserve the window if possible. 908 * @hide 909 */ 910 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 911 912 /** 913 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 914 * that the resize should be performed even if the bounds appears unchanged. 915 * @hide 916 */ 917 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 918 919 /** 920 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 921 * manager during a screen rotation. 922 * @hide 923 */ 924 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 925 926 /** 927 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 928 * resize is due to a drag action. 929 * @hide 930 */ 931 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 932 933 /** 934 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 935 * that the resize should preserve the window if possible, and should not be skipped 936 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 937 * is ending. 938 * @hide 939 */ 940 public static final int RESIZE_MODE_USER_FORCED = 941 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 942 943 /** @hide */ 944 public int getFrontActivityScreenCompatMode() { 945 try { 946 return getService().getFrontActivityScreenCompatMode(); 947 } catch (RemoteException e) { 948 throw e.rethrowFromSystemServer(); 949 } 950 } 951 952 /** @hide */ 953 public void setFrontActivityScreenCompatMode(int mode) { 954 try { 955 getService().setFrontActivityScreenCompatMode(mode); 956 } catch (RemoteException e) { 957 throw e.rethrowFromSystemServer(); 958 } 959 } 960 961 /** @hide */ 962 public int getPackageScreenCompatMode(String packageName) { 963 try { 964 return getService().getPackageScreenCompatMode(packageName); 965 } catch (RemoteException e) { 966 throw e.rethrowFromSystemServer(); 967 } 968 } 969 970 /** @hide */ 971 public void setPackageScreenCompatMode(String packageName, int mode) { 972 try { 973 getService().setPackageScreenCompatMode(packageName, mode); 974 } catch (RemoteException e) { 975 throw e.rethrowFromSystemServer(); 976 } 977 } 978 979 /** @hide */ 980 public boolean getPackageAskScreenCompat(String packageName) { 981 try { 982 return getService().getPackageAskScreenCompat(packageName); 983 } catch (RemoteException e) { 984 throw e.rethrowFromSystemServer(); 985 } 986 } 987 988 /** @hide */ 989 public void setPackageAskScreenCompat(String packageName, boolean ask) { 990 try { 991 getService().setPackageAskScreenCompat(packageName, ask); 992 } catch (RemoteException e) { 993 throw e.rethrowFromSystemServer(); 994 } 995 } 996 997 /** 998 * Return the approximate per-application memory class of the current 999 * device. This gives you an idea of how hard a memory limit you should 1000 * impose on your application to let the overall system work best. The 1001 * returned value is in megabytes; the baseline Android memory class is 1002 * 16 (which happens to be the Java heap limit of those devices); some 1003 * device with more memory may return 24 or even higher numbers. 1004 */ 1005 public int getMemoryClass() { 1006 return staticGetMemoryClass(); 1007 } 1008 1009 /** @hide */ 1010 static public int staticGetMemoryClass() { 1011 // Really brain dead right now -- just take this from the configured 1012 // vm heap size, and assume it is in megabytes and thus ends with "m". 1013 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1014 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1015 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1016 } 1017 return staticGetLargeMemoryClass(); 1018 } 1019 1020 /** 1021 * Return the approximate per-application memory class of the current 1022 * device when an application is running with a large heap. This is the 1023 * space available for memory-intensive applications; most applications 1024 * should not need this amount of memory, and should instead stay with the 1025 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1026 * This may be the same size as {@link #getMemoryClass()} on memory 1027 * constrained devices, or it may be significantly larger on devices with 1028 * a large amount of available RAM. 1029 * 1030 * <p>The is the size of the application's Dalvik heap if it has 1031 * specified <code>android:largeHeap="true"</code> in its manifest. 1032 */ 1033 public int getLargeMemoryClass() { 1034 return staticGetLargeMemoryClass(); 1035 } 1036 1037 /** @hide */ 1038 static public int staticGetLargeMemoryClass() { 1039 // Really brain dead right now -- just take this from the configured 1040 // vm heap size, and assume it is in megabytes and thus ends with "m". 1041 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1042 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1043 } 1044 1045 /** 1046 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1047 * is ultimately up to the device configuration, but currently it generally means 1048 * something in the class of a 512MB device with about a 800x480 or less screen. 1049 * This is mostly intended to be used by apps to determine whether they should turn 1050 * off certain features that require more RAM. 1051 */ 1052 public boolean isLowRamDevice() { 1053 return isLowRamDeviceStatic(); 1054 } 1055 1056 /** @hide */ 1057 public static boolean isLowRamDeviceStatic() { 1058 return RoSystemProperties.CONFIG_LOW_RAM; 1059 } 1060 1061 /** 1062 * Returns true if this is a small battery device. Exactly whether a device is considered to be 1063 * small battery is ultimately up to the device configuration, but currently it generally means 1064 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 1065 * to determine whether certain features should be altered to account for a drastically smaller 1066 * battery. 1067 * @hide 1068 */ 1069 public static boolean isSmallBatteryDevice() { 1070 return RoSystemProperties.CONFIG_SMALL_BATTERY; 1071 } 1072 1073 /** 1074 * Used by persistent processes to determine if they are running on a 1075 * higher-end device so should be okay using hardware drawing acceleration 1076 * (which tends to consume a lot more RAM). 1077 * @hide 1078 */ 1079 static public boolean isHighEndGfx() { 1080 return !isLowRamDeviceStatic() && 1081 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1082 } 1083 1084 /** 1085 * Return the maximum number of recents entries that we will maintain and show. 1086 * @hide 1087 */ 1088 static public int getMaxRecentTasksStatic() { 1089 if (gMaxRecentTasks < 0) { 1090 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1091 } 1092 return gMaxRecentTasks; 1093 } 1094 1095 /** 1096 * Return the default limit on the number of recents that an app can make. 1097 * @hide 1098 */ 1099 static public int getDefaultAppRecentsLimitStatic() { 1100 return getMaxRecentTasksStatic() / 6; 1101 } 1102 1103 /** 1104 * Return the maximum limit on the number of recents that an app can make. 1105 * @hide 1106 */ 1107 static public int getMaxAppRecentsLimitStatic() { 1108 return getMaxRecentTasksStatic() / 2; 1109 } 1110 1111 /** 1112 * Returns true if the system supports at least one form of multi-window. 1113 * E.g. freeform, split-screen, picture-in-picture. 1114 * @hide 1115 */ 1116 static public boolean supportsMultiWindow() { 1117 return !isLowRamDeviceStatic() 1118 && Resources.getSystem().getBoolean( 1119 com.android.internal.R.bool.config_supportsMultiWindow); 1120 } 1121 1122 /** 1123 * Returns true if the system supports split screen multi-window. 1124 * @hide 1125 */ 1126 static public boolean supportsSplitScreenMultiWindow() { 1127 return supportsMultiWindow() 1128 && Resources.getSystem().getBoolean( 1129 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1130 } 1131 1132 /** 1133 * Return the maximum number of actions that will be displayed in the picture-in-picture UI when 1134 * the user interacts with the activity currently in picture-in-picture mode. 1135 */ 1136 public static int getMaxNumPictureInPictureActions() { 1137 return NUM_ALLOWED_PIP_ACTIONS; 1138 } 1139 1140 /** 1141 * Information you can set and retrieve about the current activity within the recent task list. 1142 */ 1143 public static class TaskDescription implements Parcelable { 1144 /** @hide */ 1145 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1146 private static final String ATTR_TASKDESCRIPTIONLABEL = 1147 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1148 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1149 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1150 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1151 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1152 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1153 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1154 1155 private String mLabel; 1156 private Bitmap mIcon; 1157 private String mIconFilename; 1158 private int mColorPrimary; 1159 private int mColorBackground; 1160 private int mStatusBarColor; 1161 private int mNavigationBarColor; 1162 1163 /** 1164 * Creates the TaskDescription to the specified values. 1165 * 1166 * @param label A label and description of the current state of this task. 1167 * @param icon An icon that represents the current state of this task. 1168 * @param colorPrimary A color to override the theme's primary color. This color must be 1169 * opaque. 1170 */ 1171 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1172 this(label, icon, null, colorPrimary, 0, 0, 0); 1173 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1174 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1175 } 1176 } 1177 1178 /** 1179 * Creates the TaskDescription to the specified values. 1180 * 1181 * @param label A label and description of the current state of this activity. 1182 * @param icon An icon that represents the current state of this activity. 1183 */ 1184 public TaskDescription(String label, Bitmap icon) { 1185 this(label, icon, null, 0, 0, 0, 0); 1186 } 1187 1188 /** 1189 * Creates the TaskDescription to the specified values. 1190 * 1191 * @param label A label and description of the current state of this activity. 1192 */ 1193 public TaskDescription(String label) { 1194 this(label, null, null, 0, 0, 0, 0); 1195 } 1196 1197 /** 1198 * Creates an empty TaskDescription. 1199 */ 1200 public TaskDescription() { 1201 this(null, null, null, 0, 0, 0, 0); 1202 } 1203 1204 /** @hide */ 1205 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1206 int colorBackground, int statusBarColor, int navigationBarColor) { 1207 mLabel = label; 1208 mIcon = icon; 1209 mIconFilename = iconFilename; 1210 mColorPrimary = colorPrimary; 1211 mColorBackground = colorBackground; 1212 mStatusBarColor = statusBarColor; 1213 mNavigationBarColor = navigationBarColor; 1214 } 1215 1216 /** 1217 * Creates a copy of another TaskDescription. 1218 */ 1219 public TaskDescription(TaskDescription td) { 1220 copyFrom(td); 1221 } 1222 1223 /** 1224 * Copies this the values from another TaskDescription. 1225 * @hide 1226 */ 1227 public void copyFrom(TaskDescription other) { 1228 mLabel = other.mLabel; 1229 mIcon = other.mIcon; 1230 mIconFilename = other.mIconFilename; 1231 mColorPrimary = other.mColorPrimary; 1232 mColorBackground = other.mColorBackground; 1233 mStatusBarColor = other.mStatusBarColor; 1234 mNavigationBarColor = other.mNavigationBarColor; 1235 } 1236 1237 private TaskDescription(Parcel source) { 1238 readFromParcel(source); 1239 } 1240 1241 /** 1242 * Sets the label for this task description. 1243 * @hide 1244 */ 1245 public void setLabel(String label) { 1246 mLabel = label; 1247 } 1248 1249 /** 1250 * Sets the primary color for this task description. 1251 * @hide 1252 */ 1253 public void setPrimaryColor(int primaryColor) { 1254 // Ensure that the given color is valid 1255 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1256 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1257 } 1258 mColorPrimary = primaryColor; 1259 } 1260 1261 /** 1262 * Sets the background color for this task description. 1263 * @hide 1264 */ 1265 public void setBackgroundColor(int backgroundColor) { 1266 // Ensure that the given color is valid 1267 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1268 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1269 } 1270 mColorBackground = backgroundColor; 1271 } 1272 1273 /** 1274 * @hide 1275 */ 1276 public void setStatusBarColor(int statusBarColor) { 1277 mStatusBarColor = statusBarColor; 1278 } 1279 1280 /** 1281 * @hide 1282 */ 1283 public void setNavigationBarColor(int navigationBarColor) { 1284 mNavigationBarColor = navigationBarColor; 1285 } 1286 1287 /** 1288 * Sets the icon for this task description. 1289 * @hide 1290 */ 1291 public void setIcon(Bitmap icon) { 1292 mIcon = icon; 1293 } 1294 1295 /** 1296 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1297 * bitmap. 1298 * @hide 1299 */ 1300 public void setIconFilename(String iconFilename) { 1301 mIconFilename = iconFilename; 1302 mIcon = null; 1303 } 1304 1305 /** 1306 * @return The label and description of the current state of this task. 1307 */ 1308 public String getLabel() { 1309 return mLabel; 1310 } 1311 1312 /** 1313 * @return The icon that represents the current state of this task. 1314 */ 1315 public Bitmap getIcon() { 1316 if (mIcon != null) { 1317 return mIcon; 1318 } 1319 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1320 } 1321 1322 /** @hide */ 1323 public String getIconFilename() { 1324 return mIconFilename; 1325 } 1326 1327 /** @hide */ 1328 public Bitmap getInMemoryIcon() { 1329 return mIcon; 1330 } 1331 1332 /** @hide */ 1333 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1334 if (iconFilename != null) { 1335 try { 1336 return getService().getTaskDescriptionIcon(iconFilename, 1337 userId); 1338 } catch (RemoteException e) { 1339 throw e.rethrowFromSystemServer(); 1340 } 1341 } 1342 return null; 1343 } 1344 1345 /** 1346 * @return The color override on the theme's primary color. 1347 */ 1348 public int getPrimaryColor() { 1349 return mColorPrimary; 1350 } 1351 1352 /** 1353 * @return The background color. 1354 * @hide 1355 */ 1356 public int getBackgroundColor() { 1357 return mColorBackground; 1358 } 1359 1360 /** 1361 * @hide 1362 */ 1363 public int getStatusBarColor() { 1364 return mStatusBarColor; 1365 } 1366 1367 /** 1368 * @hide 1369 */ 1370 public int getNavigationBarColor() { 1371 return mNavigationBarColor; 1372 } 1373 1374 /** @hide */ 1375 public void saveToXml(XmlSerializer out) throws IOException { 1376 if (mLabel != null) { 1377 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1378 } 1379 if (mColorPrimary != 0) { 1380 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1381 Integer.toHexString(mColorPrimary)); 1382 } 1383 if (mColorBackground != 0) { 1384 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1385 Integer.toHexString(mColorBackground)); 1386 } 1387 if (mIconFilename != null) { 1388 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1389 } 1390 } 1391 1392 /** @hide */ 1393 public void restoreFromXml(String attrName, String attrValue) { 1394 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1395 setLabel(attrValue); 1396 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1397 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1398 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1399 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1400 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1401 setIconFilename(attrValue); 1402 } 1403 } 1404 1405 @Override 1406 public int describeContents() { 1407 return 0; 1408 } 1409 1410 @Override 1411 public void writeToParcel(Parcel dest, int flags) { 1412 if (mLabel == null) { 1413 dest.writeInt(0); 1414 } else { 1415 dest.writeInt(1); 1416 dest.writeString(mLabel); 1417 } 1418 if (mIcon == null) { 1419 dest.writeInt(0); 1420 } else { 1421 dest.writeInt(1); 1422 mIcon.writeToParcel(dest, 0); 1423 } 1424 dest.writeInt(mColorPrimary); 1425 dest.writeInt(mColorBackground); 1426 dest.writeInt(mStatusBarColor); 1427 dest.writeInt(mNavigationBarColor); 1428 if (mIconFilename == null) { 1429 dest.writeInt(0); 1430 } else { 1431 dest.writeInt(1); 1432 dest.writeString(mIconFilename); 1433 } 1434 } 1435 1436 public void readFromParcel(Parcel source) { 1437 mLabel = source.readInt() > 0 ? source.readString() : null; 1438 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1439 mColorPrimary = source.readInt(); 1440 mColorBackground = source.readInt(); 1441 mStatusBarColor = source.readInt(); 1442 mNavigationBarColor = source.readInt(); 1443 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1444 } 1445 1446 public static final Creator<TaskDescription> CREATOR 1447 = new Creator<TaskDescription>() { 1448 public TaskDescription createFromParcel(Parcel source) { 1449 return new TaskDescription(source); 1450 } 1451 public TaskDescription[] newArray(int size) { 1452 return new TaskDescription[size]; 1453 } 1454 }; 1455 1456 @Override 1457 public String toString() { 1458 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1459 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1460 " colorBackground: " + mColorBackground + 1461 " statusBarColor: " + mColorBackground + 1462 " navigationBarColor: " + mNavigationBarColor; 1463 } 1464 } 1465 1466 /** 1467 * Information you can retrieve about tasks that the user has most recently 1468 * started or visited. 1469 */ 1470 public static class RecentTaskInfo implements Parcelable { 1471 /** 1472 * If this task is currently running, this is the identifier for it. 1473 * If it is not running, this will be -1. 1474 */ 1475 public int id; 1476 1477 /** 1478 * The true identifier of this task, valid even if it is not running. 1479 */ 1480 public int persistentId; 1481 1482 /** 1483 * The original Intent used to launch the task. You can use this 1484 * Intent to re-launch the task (if it is no longer running) or bring 1485 * the current task to the front. 1486 */ 1487 public Intent baseIntent; 1488 1489 /** 1490 * If this task was started from an alias, this is the actual 1491 * activity component that was initially started; the component of 1492 * the baseIntent in this case is the name of the actual activity 1493 * implementation that the alias referred to. Otherwise, this is null. 1494 */ 1495 public ComponentName origActivity; 1496 1497 /** 1498 * The actual activity component that started the task. 1499 * @hide 1500 */ 1501 @Nullable 1502 public ComponentName realActivity; 1503 1504 /** 1505 * Description of the task's last state. 1506 */ 1507 public CharSequence description; 1508 1509 /** 1510 * The id of the ActivityStack this Task was on most recently. 1511 * @hide 1512 */ 1513 public int stackId; 1514 1515 /** 1516 * The id of the user the task was running as. 1517 * @hide 1518 */ 1519 public int userId; 1520 1521 /** 1522 * The first time this task was active. 1523 * @hide 1524 */ 1525 public long firstActiveTime; 1526 1527 /** 1528 * The last time this task was active. 1529 * @hide 1530 */ 1531 public long lastActiveTime; 1532 1533 /** 1534 * The recent activity values for the highest activity in the stack to have set the values. 1535 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1536 */ 1537 public TaskDescription taskDescription; 1538 1539 /** 1540 * Task affiliation for grouping with other tasks. 1541 */ 1542 public int affiliatedTaskId; 1543 1544 /** 1545 * Task affiliation color of the source task with the affiliated task id. 1546 * 1547 * @hide 1548 */ 1549 public int affiliatedTaskColor; 1550 1551 /** 1552 * The component launched as the first activity in the task. 1553 * This can be considered the "application" of this task. 1554 */ 1555 public ComponentName baseActivity; 1556 1557 /** 1558 * The activity component at the top of the history stack of the task. 1559 * This is what the user is currently doing. 1560 */ 1561 public ComponentName topActivity; 1562 1563 /** 1564 * Number of activities in this task. 1565 */ 1566 public int numActivities; 1567 1568 /** 1569 * The bounds of the task. 1570 * @hide 1571 */ 1572 public Rect bounds; 1573 1574 /** 1575 * True if the task can go in the docked stack. 1576 * @hide 1577 */ 1578 public boolean supportsSplitScreenMultiWindow; 1579 1580 /** 1581 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1582 * @hide 1583 */ 1584 public int resizeMode; 1585 1586 public RecentTaskInfo() { 1587 } 1588 1589 @Override 1590 public int describeContents() { 1591 return 0; 1592 } 1593 1594 @Override 1595 public void writeToParcel(Parcel dest, int flags) { 1596 dest.writeInt(id); 1597 dest.writeInt(persistentId); 1598 if (baseIntent != null) { 1599 dest.writeInt(1); 1600 baseIntent.writeToParcel(dest, 0); 1601 } else { 1602 dest.writeInt(0); 1603 } 1604 ComponentName.writeToParcel(origActivity, dest); 1605 ComponentName.writeToParcel(realActivity, dest); 1606 TextUtils.writeToParcel(description, dest, 1607 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1608 if (taskDescription != null) { 1609 dest.writeInt(1); 1610 taskDescription.writeToParcel(dest, 0); 1611 } else { 1612 dest.writeInt(0); 1613 } 1614 dest.writeInt(stackId); 1615 dest.writeInt(userId); 1616 dest.writeLong(firstActiveTime); 1617 dest.writeLong(lastActiveTime); 1618 dest.writeInt(affiliatedTaskId); 1619 dest.writeInt(affiliatedTaskColor); 1620 ComponentName.writeToParcel(baseActivity, dest); 1621 ComponentName.writeToParcel(topActivity, dest); 1622 dest.writeInt(numActivities); 1623 if (bounds != null) { 1624 dest.writeInt(1); 1625 bounds.writeToParcel(dest, 0); 1626 } else { 1627 dest.writeInt(0); 1628 } 1629 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1630 dest.writeInt(resizeMode); 1631 } 1632 1633 public void readFromParcel(Parcel source) { 1634 id = source.readInt(); 1635 persistentId = source.readInt(); 1636 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1637 origActivity = ComponentName.readFromParcel(source); 1638 realActivity = ComponentName.readFromParcel(source); 1639 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1640 taskDescription = source.readInt() > 0 ? 1641 TaskDescription.CREATOR.createFromParcel(source) : null; 1642 stackId = source.readInt(); 1643 userId = source.readInt(); 1644 firstActiveTime = source.readLong(); 1645 lastActiveTime = source.readLong(); 1646 affiliatedTaskId = source.readInt(); 1647 affiliatedTaskColor = source.readInt(); 1648 baseActivity = ComponentName.readFromParcel(source); 1649 topActivity = ComponentName.readFromParcel(source); 1650 numActivities = source.readInt(); 1651 bounds = source.readInt() > 0 ? 1652 Rect.CREATOR.createFromParcel(source) : null; 1653 supportsSplitScreenMultiWindow = source.readInt() == 1; 1654 resizeMode = source.readInt(); 1655 } 1656 1657 public static final Creator<RecentTaskInfo> CREATOR 1658 = new Creator<RecentTaskInfo>() { 1659 public RecentTaskInfo createFromParcel(Parcel source) { 1660 return new RecentTaskInfo(source); 1661 } 1662 public RecentTaskInfo[] newArray(int size) { 1663 return new RecentTaskInfo[size]; 1664 } 1665 }; 1666 1667 private RecentTaskInfo(Parcel source) { 1668 readFromParcel(source); 1669 } 1670 } 1671 1672 /** 1673 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1674 * that have set their 1675 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1676 */ 1677 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1678 1679 /** 1680 * Provides a list that does not contain any 1681 * recent tasks that currently are not available to the user. 1682 */ 1683 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1684 1685 /** 1686 * Provides a list that contains recent tasks for all 1687 * profiles of a user. 1688 * @hide 1689 */ 1690 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1691 1692 /** 1693 * Ignores all tasks that are on the home stack. 1694 * @hide 1695 */ 1696 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1697 1698 /** 1699 * Ignores the top task in the docked stack. 1700 * @hide 1701 */ 1702 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1703 1704 /** 1705 * Ignores all tasks that are on the pinned stack. 1706 * @hide 1707 */ 1708 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1709 1710 /** 1711 * <p></p>Return a list of the tasks that the user has recently launched, with 1712 * the most recent being first and older ones after in order. 1713 * 1714 * <p><b>Note: this method is only intended for debugging and presenting 1715 * task management user interfaces</b>. This should never be used for 1716 * core logic in an application, such as deciding between different 1717 * behaviors based on the information found here. Such uses are 1718 * <em>not</em> supported, and will likely break in the future. For 1719 * example, if multiple applications can be actively running at the 1720 * same time, assumptions made about the meaning of the data here for 1721 * purposes of control flow will be incorrect.</p> 1722 * 1723 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1724 * no longer available to third party applications: the introduction of 1725 * document-centric recents means 1726 * it can leak personal information to the caller. For backwards compatibility, 1727 * it will still return a small subset of its data: at least the caller's 1728 * own tasks (though see {@link #getAppTasks()} for the correct supported 1729 * way to retrieve that information), and possibly some other tasks 1730 * such as home that are known to not be sensitive. 1731 * 1732 * @param maxNum The maximum number of entries to return in the list. The 1733 * actual number returned may be smaller, depending on how many tasks the 1734 * user has started and the maximum number the system can remember. 1735 * @param flags Information about what to return. May be any combination 1736 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1737 * 1738 * @return Returns a list of RecentTaskInfo records describing each of 1739 * the recent tasks. 1740 */ 1741 @Deprecated 1742 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1743 throws SecurityException { 1744 try { 1745 return getService().getRecentTasks(maxNum, 1746 flags, UserHandle.myUserId()).getList(); 1747 } catch (RemoteException e) { 1748 throw e.rethrowFromSystemServer(); 1749 } 1750 } 1751 1752 /** 1753 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1754 * specific user. It requires holding 1755 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1756 * @param maxNum The maximum number of entries to return in the list. The 1757 * actual number returned may be smaller, depending on how many tasks the 1758 * user has started and the maximum number the system can remember. 1759 * @param flags Information about what to return. May be any combination 1760 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1761 * 1762 * @return Returns a list of RecentTaskInfo records describing each of 1763 * the recent tasks. Most recently activated tasks go first. 1764 * 1765 * @hide 1766 */ 1767 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1768 throws SecurityException { 1769 try { 1770 return getService().getRecentTasks(maxNum, 1771 flags, userId).getList(); 1772 } catch (RemoteException e) { 1773 throw e.rethrowFromSystemServer(); 1774 } 1775 } 1776 1777 /** 1778 * Information you can retrieve about a particular task that is currently 1779 * "running" in the system. Note that a running task does not mean the 1780 * given task actually has a process it is actively running in; it simply 1781 * means that the user has gone to it and never closed it, but currently 1782 * the system may have killed its process and is only holding on to its 1783 * last state in order to restart it when the user returns. 1784 */ 1785 public static class RunningTaskInfo implements Parcelable { 1786 /** 1787 * A unique identifier for this task. 1788 */ 1789 public int id; 1790 1791 /** 1792 * The stack that currently contains this task. 1793 * @hide 1794 */ 1795 public int stackId; 1796 1797 /** 1798 * The component launched as the first activity in the task. This can 1799 * be considered the "application" of this task. 1800 */ 1801 public ComponentName baseActivity; 1802 1803 /** 1804 * The activity component at the top of the history stack of the task. 1805 * This is what the user is currently doing. 1806 */ 1807 public ComponentName topActivity; 1808 1809 /** 1810 * Thumbnail representation of the task's current state. Currently 1811 * always null. 1812 */ 1813 public Bitmap thumbnail; 1814 1815 /** 1816 * Description of the task's current state. 1817 */ 1818 public CharSequence description; 1819 1820 /** 1821 * Number of activities in this task. 1822 */ 1823 public int numActivities; 1824 1825 /** 1826 * Number of activities that are currently running (not stopped 1827 * and persisted) in this task. 1828 */ 1829 public int numRunning; 1830 1831 /** 1832 * Last time task was run. For sorting. 1833 * @hide 1834 */ 1835 public long lastActiveTime; 1836 1837 /** 1838 * True if the task can go in the docked stack. 1839 * @hide 1840 */ 1841 public boolean supportsSplitScreenMultiWindow; 1842 1843 /** 1844 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1845 * @hide 1846 */ 1847 public int resizeMode; 1848 1849 public RunningTaskInfo() { 1850 } 1851 1852 public int describeContents() { 1853 return 0; 1854 } 1855 1856 public void writeToParcel(Parcel dest, int flags) { 1857 dest.writeInt(id); 1858 dest.writeInt(stackId); 1859 ComponentName.writeToParcel(baseActivity, dest); 1860 ComponentName.writeToParcel(topActivity, dest); 1861 if (thumbnail != null) { 1862 dest.writeInt(1); 1863 thumbnail.writeToParcel(dest, 0); 1864 } else { 1865 dest.writeInt(0); 1866 } 1867 TextUtils.writeToParcel(description, dest, 1868 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1869 dest.writeInt(numActivities); 1870 dest.writeInt(numRunning); 1871 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1872 dest.writeInt(resizeMode); 1873 } 1874 1875 public void readFromParcel(Parcel source) { 1876 id = source.readInt(); 1877 stackId = source.readInt(); 1878 baseActivity = ComponentName.readFromParcel(source); 1879 topActivity = ComponentName.readFromParcel(source); 1880 if (source.readInt() != 0) { 1881 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1882 } else { 1883 thumbnail = null; 1884 } 1885 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1886 numActivities = source.readInt(); 1887 numRunning = source.readInt(); 1888 supportsSplitScreenMultiWindow = source.readInt() != 0; 1889 resizeMode = source.readInt(); 1890 } 1891 1892 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1893 public RunningTaskInfo createFromParcel(Parcel source) { 1894 return new RunningTaskInfo(source); 1895 } 1896 public RunningTaskInfo[] newArray(int size) { 1897 return new RunningTaskInfo[size]; 1898 } 1899 }; 1900 1901 private RunningTaskInfo(Parcel source) { 1902 readFromParcel(source); 1903 } 1904 } 1905 1906 /** 1907 * Get the list of tasks associated with the calling application. 1908 * 1909 * @return The list of tasks associated with the application making this call. 1910 * @throws SecurityException 1911 */ 1912 public List<ActivityManager.AppTask> getAppTasks() { 1913 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1914 List<IBinder> appTasks; 1915 try { 1916 appTasks = getService().getAppTasks(mContext.getPackageName()); 1917 } catch (RemoteException e) { 1918 throw e.rethrowFromSystemServer(); 1919 } 1920 int numAppTasks = appTasks.size(); 1921 for (int i = 0; i < numAppTasks; i++) { 1922 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1923 } 1924 return tasks; 1925 } 1926 1927 /** 1928 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1929 * with {@link #addAppTask}. 1930 */ 1931 public Size getAppTaskThumbnailSize() { 1932 synchronized (this) { 1933 ensureAppTaskThumbnailSizeLocked(); 1934 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1935 } 1936 } 1937 1938 private void ensureAppTaskThumbnailSizeLocked() { 1939 if (mAppTaskThumbnailSize == null) { 1940 try { 1941 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1942 } catch (RemoteException e) { 1943 throw e.rethrowFromSystemServer(); 1944 } 1945 } 1946 } 1947 1948 /** 1949 * Add a new {@link AppTask} for the calling application. This will create a new 1950 * recents entry that is added to the <b>end</b> of all existing recents. 1951 * 1952 * @param activity The activity that is adding the entry. This is used to help determine 1953 * the context that the new recents entry will be in. 1954 * @param intent The Intent that describes the recents entry. This is the same Intent that 1955 * you would have used to launch the activity for it. In generally you will want to set 1956 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1957 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1958 * entry will exist without an activity, so it doesn't make sense to not retain it when 1959 * its activity disappears. The given Intent here also must have an explicit ComponentName 1960 * set on it. 1961 * @param description Optional additional description information. 1962 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1963 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1964 * recreated in your process, probably in a way you don't like, before the recents entry 1965 * is added. 1966 * 1967 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1968 * most likely cause of failure is that there is no more room for more tasks for your app. 1969 */ 1970 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1971 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1972 Point size; 1973 synchronized (this) { 1974 ensureAppTaskThumbnailSizeLocked(); 1975 size = mAppTaskThumbnailSize; 1976 } 1977 final int tw = thumbnail.getWidth(); 1978 final int th = thumbnail.getHeight(); 1979 if (tw != size.x || th != size.y) { 1980 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1981 1982 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1983 float scale; 1984 float dx = 0, dy = 0; 1985 if (tw * size.x > size.y * th) { 1986 scale = (float) size.x / (float) th; 1987 dx = (size.y - tw * scale) * 0.5f; 1988 } else { 1989 scale = (float) size.y / (float) tw; 1990 dy = (size.x - th * scale) * 0.5f; 1991 } 1992 Matrix matrix = new Matrix(); 1993 matrix.setScale(scale, scale); 1994 matrix.postTranslate((int) (dx + 0.5f), 0); 1995 1996 Canvas canvas = new Canvas(bm); 1997 canvas.drawBitmap(thumbnail, matrix, null); 1998 canvas.setBitmap(null); 1999 2000 thumbnail = bm; 2001 } 2002 if (description == null) { 2003 description = new TaskDescription(); 2004 } 2005 try { 2006 return getService().addAppTask(activity.getActivityToken(), 2007 intent, description, thumbnail); 2008 } catch (RemoteException e) { 2009 throw e.rethrowFromSystemServer(); 2010 } 2011 } 2012 2013 /** 2014 * Return a list of the tasks that are currently running, with 2015 * the most recent being first and older ones after in order. Note that 2016 * "running" does not mean any of the task's code is currently loaded or 2017 * activity -- the task may have been frozen by the system, so that it 2018 * can be restarted in its previous state when next brought to the 2019 * foreground. 2020 * 2021 * <p><b>Note: this method is only intended for debugging and presenting 2022 * task management user interfaces</b>. This should never be used for 2023 * core logic in an application, such as deciding between different 2024 * behaviors based on the information found here. Such uses are 2025 * <em>not</em> supported, and will likely break in the future. For 2026 * example, if multiple applications can be actively running at the 2027 * same time, assumptions made about the meaning of the data here for 2028 * purposes of control flow will be incorrect.</p> 2029 * 2030 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 2031 * is no longer available to third party 2032 * applications: the introduction of document-centric recents means 2033 * it can leak person information to the caller. For backwards compatibility, 2034 * it will still retu rn a small subset of its data: at least the caller's 2035 * own tasks, and possibly some other tasks 2036 * such as home that are known to not be sensitive. 2037 * 2038 * @param maxNum The maximum number of entries to return in the list. The 2039 * actual number returned may be smaller, depending on how many tasks the 2040 * user has started. 2041 * 2042 * @return Returns a list of RunningTaskInfo records describing each of 2043 * the running tasks. 2044 */ 2045 @Deprecated 2046 public List<RunningTaskInfo> getRunningTasks(int maxNum) 2047 throws SecurityException { 2048 try { 2049 return getService().getTasks(maxNum, 0); 2050 } catch (RemoteException e) { 2051 throw e.rethrowFromSystemServer(); 2052 } 2053 } 2054 2055 /** 2056 * Completely remove the given task. 2057 * 2058 * @param taskId Identifier of the task to be removed. 2059 * @return Returns true if the given task was found and removed. 2060 * 2061 * @hide 2062 */ 2063 public boolean removeTask(int taskId) throws SecurityException { 2064 try { 2065 return getService().removeTask(taskId); 2066 } catch (RemoteException e) { 2067 throw e.rethrowFromSystemServer(); 2068 } 2069 } 2070 2071 /** 2072 * Metadata related to the {@link TaskThumbnail}. 2073 * 2074 * @hide 2075 */ 2076 public static class TaskThumbnailInfo implements Parcelable { 2077 /** @hide */ 2078 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2079 private static final String ATTR_TASK_WIDTH = 2080 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2081 private static final String ATTR_TASK_HEIGHT = 2082 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2083 private static final String ATTR_SCREEN_ORIENTATION = 2084 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2085 2086 public int taskWidth; 2087 public int taskHeight; 2088 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2089 2090 public TaskThumbnailInfo() { 2091 // Do nothing 2092 } 2093 2094 private TaskThumbnailInfo(Parcel source) { 2095 readFromParcel(source); 2096 } 2097 2098 /** 2099 * Resets this info state to the initial state. 2100 * @hide 2101 */ 2102 public void reset() { 2103 taskWidth = 0; 2104 taskHeight = 0; 2105 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2106 } 2107 2108 /** 2109 * Copies from another ThumbnailInfo. 2110 */ 2111 public void copyFrom(TaskThumbnailInfo o) { 2112 taskWidth = o.taskWidth; 2113 taskHeight = o.taskHeight; 2114 screenOrientation = o.screenOrientation; 2115 } 2116 2117 /** @hide */ 2118 public void saveToXml(XmlSerializer out) throws IOException { 2119 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2120 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2121 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2122 } 2123 2124 /** @hide */ 2125 public void restoreFromXml(String attrName, String attrValue) { 2126 if (ATTR_TASK_WIDTH.equals(attrName)) { 2127 taskWidth = Integer.parseInt(attrValue); 2128 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2129 taskHeight = Integer.parseInt(attrValue); 2130 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2131 screenOrientation = Integer.parseInt(attrValue); 2132 } 2133 } 2134 2135 public int describeContents() { 2136 return 0; 2137 } 2138 2139 public void writeToParcel(Parcel dest, int flags) { 2140 dest.writeInt(taskWidth); 2141 dest.writeInt(taskHeight); 2142 dest.writeInt(screenOrientation); 2143 } 2144 2145 public void readFromParcel(Parcel source) { 2146 taskWidth = source.readInt(); 2147 taskHeight = source.readInt(); 2148 screenOrientation = source.readInt(); 2149 } 2150 2151 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2152 public TaskThumbnailInfo createFromParcel(Parcel source) { 2153 return new TaskThumbnailInfo(source); 2154 } 2155 public TaskThumbnailInfo[] newArray(int size) { 2156 return new TaskThumbnailInfo[size]; 2157 } 2158 }; 2159 } 2160 2161 /** @hide */ 2162 public static class TaskThumbnail implements Parcelable { 2163 public Bitmap mainThumbnail; 2164 public ParcelFileDescriptor thumbnailFileDescriptor; 2165 public TaskThumbnailInfo thumbnailInfo; 2166 2167 public TaskThumbnail() { 2168 } 2169 2170 private TaskThumbnail(Parcel source) { 2171 readFromParcel(source); 2172 } 2173 2174 public int describeContents() { 2175 if (thumbnailFileDescriptor != null) { 2176 return thumbnailFileDescriptor.describeContents(); 2177 } 2178 return 0; 2179 } 2180 2181 public void writeToParcel(Parcel dest, int flags) { 2182 if (mainThumbnail != null) { 2183 dest.writeInt(1); 2184 mainThumbnail.writeToParcel(dest, flags); 2185 } else { 2186 dest.writeInt(0); 2187 } 2188 if (thumbnailFileDescriptor != null) { 2189 dest.writeInt(1); 2190 thumbnailFileDescriptor.writeToParcel(dest, flags); 2191 } else { 2192 dest.writeInt(0); 2193 } 2194 if (thumbnailInfo != null) { 2195 dest.writeInt(1); 2196 thumbnailInfo.writeToParcel(dest, flags); 2197 } else { 2198 dest.writeInt(0); 2199 } 2200 } 2201 2202 public void readFromParcel(Parcel source) { 2203 if (source.readInt() != 0) { 2204 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2205 } else { 2206 mainThumbnail = null; 2207 } 2208 if (source.readInt() != 0) { 2209 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2210 } else { 2211 thumbnailFileDescriptor = null; 2212 } 2213 if (source.readInt() != 0) { 2214 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2215 } else { 2216 thumbnailInfo = null; 2217 } 2218 } 2219 2220 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2221 public TaskThumbnail createFromParcel(Parcel source) { 2222 return new TaskThumbnail(source); 2223 } 2224 public TaskThumbnail[] newArray(int size) { 2225 return new TaskThumbnail[size]; 2226 } 2227 }; 2228 } 2229 2230 /** 2231 * Represents a task snapshot. 2232 * @hide 2233 */ 2234 public static class TaskSnapshot implements Parcelable { 2235 2236 private final GraphicBuffer mSnapshot; 2237 private final int mOrientation; 2238 private final Rect mContentInsets; 2239 private final boolean mReducedResolution; 2240 private final float mScale; 2241 2242 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2243 boolean reducedResolution, float scale) { 2244 mSnapshot = snapshot; 2245 mOrientation = orientation; 2246 mContentInsets = new Rect(contentInsets); 2247 mReducedResolution = reducedResolution; 2248 mScale = scale; 2249 } 2250 2251 private TaskSnapshot(Parcel source) { 2252 mSnapshot = source.readParcelable(null /* classLoader */); 2253 mOrientation = source.readInt(); 2254 mContentInsets = source.readParcelable(null /* classLoader */); 2255 mReducedResolution = source.readBoolean(); 2256 mScale = source.readFloat(); 2257 } 2258 2259 /** 2260 * @return The graphic buffer representing the screenshot. 2261 */ 2262 public GraphicBuffer getSnapshot() { 2263 return mSnapshot; 2264 } 2265 2266 /** 2267 * @return The screen orientation the screenshot was taken in. 2268 */ 2269 public int getOrientation() { 2270 return mOrientation; 2271 } 2272 2273 /** 2274 * @return The system/content insets on the snapshot. These can be clipped off in order to 2275 * remove any areas behind system bars in the snapshot. 2276 */ 2277 public Rect getContentInsets() { 2278 return mContentInsets; 2279 } 2280 2281 /** 2282 * @return Whether this snapshot is a down-sampled version of the full resolution. 2283 */ 2284 public boolean isReducedResolution() { 2285 return mReducedResolution; 2286 } 2287 2288 /** 2289 * @return The scale this snapshot was taken in. 2290 */ 2291 public float getScale() { 2292 return mScale; 2293 } 2294 2295 @Override 2296 public int describeContents() { 2297 return 0; 2298 } 2299 2300 @Override 2301 public void writeToParcel(Parcel dest, int flags) { 2302 dest.writeParcelable(mSnapshot, 0); 2303 dest.writeInt(mOrientation); 2304 dest.writeParcelable(mContentInsets, 0); 2305 dest.writeBoolean(mReducedResolution); 2306 dest.writeFloat(mScale); 2307 } 2308 2309 @Override 2310 public String toString() { 2311 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2312 + " mContentInsets=" + mContentInsets.toShortString() 2313 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2314 } 2315 2316 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2317 public TaskSnapshot createFromParcel(Parcel source) { 2318 return new TaskSnapshot(source); 2319 } 2320 public TaskSnapshot[] newArray(int size) { 2321 return new TaskSnapshot[size]; 2322 } 2323 }; 2324 } 2325 2326 /** @hide */ 2327 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2328 try { 2329 return getService().getTaskThumbnail(id); 2330 } catch (RemoteException e) { 2331 throw e.rethrowFromSystemServer(); 2332 } 2333 } 2334 2335 /** 2336 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2337 * activity along with the task, so it is positioned immediately behind 2338 * the task. 2339 */ 2340 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2341 2342 /** 2343 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2344 * user-instigated action, so the current activity will not receive a 2345 * hint that the user is leaving. 2346 */ 2347 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2348 2349 /** 2350 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2351 * with a null options argument. 2352 * 2353 * @param taskId The identifier of the task to be moved, as found in 2354 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2355 * @param flags Additional operational flags, 0 or more of 2356 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2357 */ 2358 public void moveTaskToFront(int taskId, int flags) { 2359 moveTaskToFront(taskId, flags, null); 2360 } 2361 2362 /** 2363 * Ask that the task associated with a given task ID be moved to the 2364 * front of the stack, so it is now visible to the user. Requires that 2365 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2366 * or a SecurityException will be thrown. 2367 * 2368 * @param taskId The identifier of the task to be moved, as found in 2369 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2370 * @param flags Additional operational flags, 0 or more of 2371 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2372 * @param options Additional options for the operation, either null or 2373 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2374 * Context.startActivity(Intent, Bundle)}. 2375 */ 2376 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2377 try { 2378 getService().moveTaskToFront(taskId, flags, options); 2379 } catch (RemoteException e) { 2380 throw e.rethrowFromSystemServer(); 2381 } 2382 } 2383 2384 /** 2385 * Information you can retrieve about a particular Service that is 2386 * currently running in the system. 2387 */ 2388 public static class RunningServiceInfo implements Parcelable { 2389 /** 2390 * The service component. 2391 */ 2392 public ComponentName service; 2393 2394 /** 2395 * If non-zero, this is the process the service is running in. 2396 */ 2397 public int pid; 2398 2399 /** 2400 * The UID that owns this service. 2401 */ 2402 public int uid; 2403 2404 /** 2405 * The name of the process this service runs in. 2406 */ 2407 public String process; 2408 2409 /** 2410 * Set to true if the service has asked to run as a foreground process. 2411 */ 2412 public boolean foreground; 2413 2414 /** 2415 * The time when the service was first made active, either by someone 2416 * starting or binding to it. This 2417 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2418 */ 2419 public long activeSince; 2420 2421 /** 2422 * Set to true if this service has been explicitly started. 2423 */ 2424 public boolean started; 2425 2426 /** 2427 * Number of clients connected to the service. 2428 */ 2429 public int clientCount; 2430 2431 /** 2432 * Number of times the service's process has crashed while the service 2433 * is running. 2434 */ 2435 public int crashCount; 2436 2437 /** 2438 * The time when there was last activity in the service (either 2439 * explicit requests to start it or clients binding to it). This 2440 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2441 */ 2442 public long lastActivityTime; 2443 2444 /** 2445 * If non-zero, this service is not currently running, but scheduled to 2446 * restart at the given time. 2447 */ 2448 public long restarting; 2449 2450 /** 2451 * Bit for {@link #flags}: set if this service has been 2452 * explicitly started. 2453 */ 2454 public static final int FLAG_STARTED = 1<<0; 2455 2456 /** 2457 * Bit for {@link #flags}: set if the service has asked to 2458 * run as a foreground process. 2459 */ 2460 public static final int FLAG_FOREGROUND = 1<<1; 2461 2462 /** 2463 * Bit for {@link #flags}: set if the service is running in a 2464 * core system process. 2465 */ 2466 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2467 2468 /** 2469 * Bit for {@link #flags}: set if the service is running in a 2470 * persistent process. 2471 */ 2472 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2473 2474 /** 2475 * Running flags. 2476 */ 2477 public int flags; 2478 2479 /** 2480 * For special services that are bound to by system code, this is 2481 * the package that holds the binding. 2482 */ 2483 public String clientPackage; 2484 2485 /** 2486 * For special services that are bound to by system code, this is 2487 * a string resource providing a user-visible label for who the 2488 * client is. 2489 */ 2490 public int clientLabel; 2491 2492 public RunningServiceInfo() { 2493 } 2494 2495 public int describeContents() { 2496 return 0; 2497 } 2498 2499 public void writeToParcel(Parcel dest, int flags) { 2500 ComponentName.writeToParcel(service, dest); 2501 dest.writeInt(pid); 2502 dest.writeInt(uid); 2503 dest.writeString(process); 2504 dest.writeInt(foreground ? 1 : 0); 2505 dest.writeLong(activeSince); 2506 dest.writeInt(started ? 1 : 0); 2507 dest.writeInt(clientCount); 2508 dest.writeInt(crashCount); 2509 dest.writeLong(lastActivityTime); 2510 dest.writeLong(restarting); 2511 dest.writeInt(this.flags); 2512 dest.writeString(clientPackage); 2513 dest.writeInt(clientLabel); 2514 } 2515 2516 public void readFromParcel(Parcel source) { 2517 service = ComponentName.readFromParcel(source); 2518 pid = source.readInt(); 2519 uid = source.readInt(); 2520 process = source.readString(); 2521 foreground = source.readInt() != 0; 2522 activeSince = source.readLong(); 2523 started = source.readInt() != 0; 2524 clientCount = source.readInt(); 2525 crashCount = source.readInt(); 2526 lastActivityTime = source.readLong(); 2527 restarting = source.readLong(); 2528 flags = source.readInt(); 2529 clientPackage = source.readString(); 2530 clientLabel = source.readInt(); 2531 } 2532 2533 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2534 public RunningServiceInfo createFromParcel(Parcel source) { 2535 return new RunningServiceInfo(source); 2536 } 2537 public RunningServiceInfo[] newArray(int size) { 2538 return new RunningServiceInfo[size]; 2539 } 2540 }; 2541 2542 private RunningServiceInfo(Parcel source) { 2543 readFromParcel(source); 2544 } 2545 } 2546 2547 /** 2548 * Return a list of the services that are currently running. 2549 * 2550 * <p><b>Note: this method is only intended for debugging or implementing 2551 * service management type user interfaces.</b></p> 2552 * 2553 * @param maxNum The maximum number of entries to return in the list. The 2554 * actual number returned may be smaller, depending on how many services 2555 * are running. 2556 * 2557 * @return Returns a list of RunningServiceInfo records describing each of 2558 * the running tasks. 2559 */ 2560 public List<RunningServiceInfo> getRunningServices(int maxNum) 2561 throws SecurityException { 2562 try { 2563 return getService() 2564 .getServices(maxNum, 0); 2565 } catch (RemoteException e) { 2566 throw e.rethrowFromSystemServer(); 2567 } 2568 } 2569 2570 /** 2571 * Returns a PendingIntent you can start to show a control panel for the 2572 * given running service. If the service does not have a control panel, 2573 * null is returned. 2574 */ 2575 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2576 throws SecurityException { 2577 try { 2578 return getService() 2579 .getRunningServiceControlPanel(service); 2580 } catch (RemoteException e) { 2581 throw e.rethrowFromSystemServer(); 2582 } 2583 } 2584 2585 /** 2586 * Information you can retrieve about the available memory through 2587 * {@link ActivityManager#getMemoryInfo}. 2588 */ 2589 public static class MemoryInfo implements Parcelable { 2590 /** 2591 * The available memory on the system. This number should not 2592 * be considered absolute: due to the nature of the kernel, a significant 2593 * portion of this memory is actually in use and needed for the overall 2594 * system to run well. 2595 */ 2596 public long availMem; 2597 2598 /** 2599 * The total memory accessible by the kernel. This is basically the 2600 * RAM size of the device, not including below-kernel fixed allocations 2601 * like DMA buffers, RAM for the baseband CPU, etc. 2602 */ 2603 public long totalMem; 2604 2605 /** 2606 * The threshold of {@link #availMem} at which we consider memory to be 2607 * low and start killing background services and other non-extraneous 2608 * processes. 2609 */ 2610 public long threshold; 2611 2612 /** 2613 * Set to true if the system considers itself to currently be in a low 2614 * memory situation. 2615 */ 2616 public boolean lowMemory; 2617 2618 /** @hide */ 2619 public long hiddenAppThreshold; 2620 /** @hide */ 2621 public long secondaryServerThreshold; 2622 /** @hide */ 2623 public long visibleAppThreshold; 2624 /** @hide */ 2625 public long foregroundAppThreshold; 2626 2627 public MemoryInfo() { 2628 } 2629 2630 public int describeContents() { 2631 return 0; 2632 } 2633 2634 public void writeToParcel(Parcel dest, int flags) { 2635 dest.writeLong(availMem); 2636 dest.writeLong(totalMem); 2637 dest.writeLong(threshold); 2638 dest.writeInt(lowMemory ? 1 : 0); 2639 dest.writeLong(hiddenAppThreshold); 2640 dest.writeLong(secondaryServerThreshold); 2641 dest.writeLong(visibleAppThreshold); 2642 dest.writeLong(foregroundAppThreshold); 2643 } 2644 2645 public void readFromParcel(Parcel source) { 2646 availMem = source.readLong(); 2647 totalMem = source.readLong(); 2648 threshold = source.readLong(); 2649 lowMemory = source.readInt() != 0; 2650 hiddenAppThreshold = source.readLong(); 2651 secondaryServerThreshold = source.readLong(); 2652 visibleAppThreshold = source.readLong(); 2653 foregroundAppThreshold = source.readLong(); 2654 } 2655 2656 public static final Creator<MemoryInfo> CREATOR 2657 = new Creator<MemoryInfo>() { 2658 public MemoryInfo createFromParcel(Parcel source) { 2659 return new MemoryInfo(source); 2660 } 2661 public MemoryInfo[] newArray(int size) { 2662 return new MemoryInfo[size]; 2663 } 2664 }; 2665 2666 private MemoryInfo(Parcel source) { 2667 readFromParcel(source); 2668 } 2669 } 2670 2671 /** 2672 * Return general information about the memory state of the system. This 2673 * can be used to help decide how to manage your own memory, though note 2674 * that polling is not recommended and 2675 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2676 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2677 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2678 * level of your process as needed, which gives a better hint for how to 2679 * manage its memory. 2680 */ 2681 public void getMemoryInfo(MemoryInfo outInfo) { 2682 try { 2683 getService().getMemoryInfo(outInfo); 2684 } catch (RemoteException e) { 2685 throw e.rethrowFromSystemServer(); 2686 } 2687 } 2688 2689 /** 2690 * Information you can retrieve about an ActivityStack in the system. 2691 * @hide 2692 */ 2693 public static class StackInfo implements Parcelable { 2694 public int stackId; 2695 public Rect bounds = new Rect(); 2696 public int[] taskIds; 2697 public String[] taskNames; 2698 public Rect[] taskBounds; 2699 public int[] taskUserIds; 2700 public ComponentName topActivity; 2701 public int displayId; 2702 public int userId; 2703 public boolean visible; 2704 // Index of the stack in the display's stack list, can be used for comparison of stack order 2705 public int position; 2706 2707 @Override 2708 public int describeContents() { 2709 return 0; 2710 } 2711 2712 @Override 2713 public void writeToParcel(Parcel dest, int flags) { 2714 dest.writeInt(stackId); 2715 dest.writeInt(bounds.left); 2716 dest.writeInt(bounds.top); 2717 dest.writeInt(bounds.right); 2718 dest.writeInt(bounds.bottom); 2719 dest.writeIntArray(taskIds); 2720 dest.writeStringArray(taskNames); 2721 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2722 dest.writeInt(boundsCount); 2723 for (int i = 0; i < boundsCount; i++) { 2724 dest.writeInt(taskBounds[i].left); 2725 dest.writeInt(taskBounds[i].top); 2726 dest.writeInt(taskBounds[i].right); 2727 dest.writeInt(taskBounds[i].bottom); 2728 } 2729 dest.writeIntArray(taskUserIds); 2730 dest.writeInt(displayId); 2731 dest.writeInt(userId); 2732 dest.writeInt(visible ? 1 : 0); 2733 dest.writeInt(position); 2734 if (topActivity != null) { 2735 dest.writeInt(1); 2736 topActivity.writeToParcel(dest, 0); 2737 } else { 2738 dest.writeInt(0); 2739 } 2740 } 2741 2742 public void readFromParcel(Parcel source) { 2743 stackId = source.readInt(); 2744 bounds = new Rect( 2745 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2746 taskIds = source.createIntArray(); 2747 taskNames = source.createStringArray(); 2748 final int boundsCount = source.readInt(); 2749 if (boundsCount > 0) { 2750 taskBounds = new Rect[boundsCount]; 2751 for (int i = 0; i < boundsCount; i++) { 2752 taskBounds[i] = new Rect(); 2753 taskBounds[i].set( 2754 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2755 } 2756 } else { 2757 taskBounds = null; 2758 } 2759 taskUserIds = source.createIntArray(); 2760 displayId = source.readInt(); 2761 userId = source.readInt(); 2762 visible = source.readInt() > 0; 2763 position = source.readInt(); 2764 if (source.readInt() > 0) { 2765 topActivity = ComponentName.readFromParcel(source); 2766 } 2767 } 2768 2769 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2770 @Override 2771 public StackInfo createFromParcel(Parcel source) { 2772 return new StackInfo(source); 2773 } 2774 @Override 2775 public StackInfo[] newArray(int size) { 2776 return new StackInfo[size]; 2777 } 2778 }; 2779 2780 public StackInfo() { 2781 } 2782 2783 private StackInfo(Parcel source) { 2784 readFromParcel(source); 2785 } 2786 2787 public String toString(String prefix) { 2788 StringBuilder sb = new StringBuilder(256); 2789 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2790 sb.append(" bounds="); sb.append(bounds.toShortString()); 2791 sb.append(" displayId="); sb.append(displayId); 2792 sb.append(" userId="); sb.append(userId); 2793 sb.append("\n"); 2794 prefix = prefix + " "; 2795 for (int i = 0; i < taskIds.length; ++i) { 2796 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2797 sb.append(": "); sb.append(taskNames[i]); 2798 if (taskBounds != null) { 2799 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2800 } 2801 sb.append(" userId=").append(taskUserIds[i]); 2802 sb.append(" visible=").append(visible); 2803 if (topActivity != null) { 2804 sb.append(" topActivity=").append(topActivity); 2805 } 2806 sb.append("\n"); 2807 } 2808 return sb.toString(); 2809 } 2810 2811 @Override 2812 public String toString() { 2813 return toString(""); 2814 } 2815 } 2816 2817 /** 2818 * @hide 2819 */ 2820 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2821 try { 2822 return getService().clearApplicationUserData(packageName, 2823 observer, UserHandle.myUserId()); 2824 } catch (RemoteException e) { 2825 throw e.rethrowFromSystemServer(); 2826 } 2827 } 2828 2829 /** 2830 * Permits an application to erase its own data from disk. This is equivalent to 2831 * the user choosing to clear the app's data from within the device settings UI. It 2832 * erases all dynamic data associated with the app -- its private data and data in its 2833 * private area on external storage -- but does not remove the installed application 2834 * itself, nor any OBB files. 2835 * 2836 * @return {@code true} if the application successfully requested that the application's 2837 * data be erased; {@code false} otherwise. 2838 */ 2839 public boolean clearApplicationUserData() { 2840 return clearApplicationUserData(mContext.getPackageName(), null); 2841 } 2842 2843 2844 /** 2845 * Permits an application to get the persistent URI permissions granted to another. 2846 * 2847 * <p>Typically called by Settings. 2848 * 2849 * @param packageName application to look for the granted permissions 2850 * @return list of granted URI permissions 2851 * 2852 * @hide 2853 */ 2854 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2855 try { 2856 return getService().getGrantedUriPermissions(packageName, 2857 UserHandle.myUserId()); 2858 } catch (RemoteException e) { 2859 throw e.rethrowFromSystemServer(); 2860 } 2861 } 2862 2863 /** 2864 * Permits an application to clear the persistent URI permissions granted to another. 2865 * 2866 * <p>Typically called by Settings. 2867 * 2868 * @param packageName application to clear its granted permissions 2869 * 2870 * @hide 2871 */ 2872 public void clearGrantedUriPermissions(String packageName) { 2873 try { 2874 getService().clearGrantedUriPermissions(packageName, 2875 UserHandle.myUserId()); 2876 } catch (RemoteException e) { 2877 throw e.rethrowFromSystemServer(); 2878 } 2879 } 2880 2881 /** 2882 * Information you can retrieve about any processes that are in an error condition. 2883 */ 2884 public static class ProcessErrorStateInfo implements Parcelable { 2885 /** 2886 * Condition codes 2887 */ 2888 public static final int NO_ERROR = 0; 2889 public static final int CRASHED = 1; 2890 public static final int NOT_RESPONDING = 2; 2891 2892 /** 2893 * The condition that the process is in. 2894 */ 2895 public int condition; 2896 2897 /** 2898 * The process name in which the crash or error occurred. 2899 */ 2900 public String processName; 2901 2902 /** 2903 * The pid of this process; 0 if none 2904 */ 2905 public int pid; 2906 2907 /** 2908 * The kernel user-ID that has been assigned to this process; 2909 * currently this is not a unique ID (multiple applications can have 2910 * the same uid). 2911 */ 2912 public int uid; 2913 2914 /** 2915 * The activity name associated with the error, if known. May be null. 2916 */ 2917 public String tag; 2918 2919 /** 2920 * A short message describing the error condition. 2921 */ 2922 public String shortMsg; 2923 2924 /** 2925 * A long message describing the error condition. 2926 */ 2927 public String longMsg; 2928 2929 /** 2930 * The stack trace where the error originated. May be null. 2931 */ 2932 public String stackTrace; 2933 2934 /** 2935 * to be deprecated: This value will always be null. 2936 */ 2937 public byte[] crashData = null; 2938 2939 public ProcessErrorStateInfo() { 2940 } 2941 2942 @Override 2943 public int describeContents() { 2944 return 0; 2945 } 2946 2947 @Override 2948 public void writeToParcel(Parcel dest, int flags) { 2949 dest.writeInt(condition); 2950 dest.writeString(processName); 2951 dest.writeInt(pid); 2952 dest.writeInt(uid); 2953 dest.writeString(tag); 2954 dest.writeString(shortMsg); 2955 dest.writeString(longMsg); 2956 dest.writeString(stackTrace); 2957 } 2958 2959 public void readFromParcel(Parcel source) { 2960 condition = source.readInt(); 2961 processName = source.readString(); 2962 pid = source.readInt(); 2963 uid = source.readInt(); 2964 tag = source.readString(); 2965 shortMsg = source.readString(); 2966 longMsg = source.readString(); 2967 stackTrace = source.readString(); 2968 } 2969 2970 public static final Creator<ProcessErrorStateInfo> CREATOR = 2971 new Creator<ProcessErrorStateInfo>() { 2972 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2973 return new ProcessErrorStateInfo(source); 2974 } 2975 public ProcessErrorStateInfo[] newArray(int size) { 2976 return new ProcessErrorStateInfo[size]; 2977 } 2978 }; 2979 2980 private ProcessErrorStateInfo(Parcel source) { 2981 readFromParcel(source); 2982 } 2983 } 2984 2985 /** 2986 * Returns a list of any processes that are currently in an error condition. The result 2987 * will be null if all processes are running properly at this time. 2988 * 2989 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2990 * current error conditions (it will not return an empty list). This list ordering is not 2991 * specified. 2992 */ 2993 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2994 try { 2995 return getService().getProcessesInErrorState(); 2996 } catch (RemoteException e) { 2997 throw e.rethrowFromSystemServer(); 2998 } 2999 } 3000 3001 /** 3002 * Information you can retrieve about a running process. 3003 */ 3004 public static class RunningAppProcessInfo implements Parcelable { 3005 /** 3006 * The name of the process that this object is associated with 3007 */ 3008 public String processName; 3009 3010 /** 3011 * The pid of this process; 0 if none 3012 */ 3013 public int pid; 3014 3015 /** 3016 * The user id of this process. 3017 */ 3018 public int uid; 3019 3020 /** 3021 * All packages that have been loaded into the process. 3022 */ 3023 public String pkgList[]; 3024 3025 /** 3026 * Constant for {@link #flags}: this is an app that is unable to 3027 * correctly save its state when going to the background, 3028 * so it can not be killed while in the background. 3029 * @hide 3030 */ 3031 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 3032 3033 /** 3034 * Constant for {@link #flags}: this process is associated with a 3035 * persistent system app. 3036 * @hide 3037 */ 3038 public static final int FLAG_PERSISTENT = 1<<1; 3039 3040 /** 3041 * Constant for {@link #flags}: this process is associated with a 3042 * persistent system app. 3043 * @hide 3044 */ 3045 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 3046 3047 /** 3048 * Flags of information. May be any of 3049 * {@link #FLAG_CANT_SAVE_STATE}. 3050 * @hide 3051 */ 3052 public int flags; 3053 3054 /** 3055 * Last memory trim level reported to the process: corresponds to 3056 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 3057 * ComponentCallbacks2.onTrimMemory(int)}. 3058 */ 3059 public int lastTrimLevel; 3060 3061 /** 3062 * Constant for {@link #importance}: This process is running the 3063 * foreground UI; that is, it is the thing currently at the top of the screen 3064 * that the user is interacting with. 3065 */ 3066 public static final int IMPORTANCE_FOREGROUND = 100; 3067 3068 /** 3069 * Constant for {@link #importance}: This process is running a foreground 3070 * service, for example to perform music playback even while the user is 3071 * not immediately in the app. This generally indicates that the process 3072 * is doing something the user actively cares about. 3073 */ 3074 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3075 3076 /** 3077 * Constant for {@link #importance}: This process is running the foreground 3078 * UI, but the device is asleep so it is not visible to the user. This means 3079 * the user is not really aware of the process, because they can not see or 3080 * interact with it, but it is quite important because it what they expect to 3081 * return to once unlocking the device. 3082 */ 3083 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3084 3085 /** 3086 * Constant for {@link #importance}: This process is running something 3087 * that is actively visible to the user, though not in the immediate 3088 * foreground. This may be running a window that is behind the current 3089 * foreground (so paused and with its state saved, not interacting with 3090 * the user, but visible to them to some degree); it may also be running 3091 * other services under the system's control that it inconsiders important. 3092 */ 3093 public static final int IMPORTANCE_VISIBLE = 200; 3094 3095 /** 3096 * Constant for {@link #importance}: This process is not something the user 3097 * is directly aware of, but is otherwise perceptable to them to some degree. 3098 */ 3099 public static final int IMPORTANCE_PERCEPTIBLE = 130; 3100 3101 /** 3102 * Constant for {@link #importance}: This process is running an 3103 * application that can not save its state, and thus can't be killed 3104 * while in the background. 3105 * @hide 3106 */ 3107 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 3108 3109 /** 3110 * Constant for {@link #importance}: This process is contains services 3111 * that should remain running. These are background services apps have 3112 * started, not something the user is aware of, so they may be killed by 3113 * the system relatively freely (though it is generally desired that they 3114 * stay running as long as they want to). 3115 */ 3116 public static final int IMPORTANCE_SERVICE = 300; 3117 3118 /** 3119 * Constant for {@link #importance}: This process process contains 3120 * cached code that is expendable, not actively running any app components 3121 * we care about. 3122 */ 3123 public static final int IMPORTANCE_CACHED = 400; 3124 3125 /** 3126 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3127 */ 3128 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3129 3130 /** 3131 * Constant for {@link #importance}: This process is empty of any 3132 * actively running code. 3133 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3134 */ 3135 @Deprecated 3136 public static final int IMPORTANCE_EMPTY = 500; 3137 3138 /** 3139 * Constant for {@link #importance}: This process does not exist. 3140 */ 3141 public static final int IMPORTANCE_GONE = 1000; 3142 3143 /** @hide */ 3144 public static int procStateToImportance(int procState) { 3145 if (procState == PROCESS_STATE_NONEXISTENT) { 3146 return IMPORTANCE_GONE; 3147 } else if (procState >= PROCESS_STATE_HOME) { 3148 return IMPORTANCE_CACHED; 3149 } else if (procState >= PROCESS_STATE_SERVICE) { 3150 return IMPORTANCE_SERVICE; 3151 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3152 return IMPORTANCE_CANT_SAVE_STATE; 3153 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 3154 return IMPORTANCE_PERCEPTIBLE; 3155 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3156 return IMPORTANCE_VISIBLE; 3157 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3158 return IMPORTANCE_TOP_SLEEPING; 3159 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3160 return IMPORTANCE_FOREGROUND_SERVICE; 3161 } else { 3162 return IMPORTANCE_FOREGROUND; 3163 } 3164 } 3165 3166 /** @hide */ 3167 public static int importanceToProcState(int importance) { 3168 if (importance == IMPORTANCE_GONE) { 3169 return PROCESS_STATE_NONEXISTENT; 3170 } else if (importance >= IMPORTANCE_CACHED) { 3171 return PROCESS_STATE_HOME; 3172 } else if (importance >= IMPORTANCE_SERVICE) { 3173 return PROCESS_STATE_SERVICE; 3174 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3175 return PROCESS_STATE_HEAVY_WEIGHT; 3176 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3177 return PROCESS_STATE_IMPORTANT_BACKGROUND; 3178 } else if (importance >= IMPORTANCE_VISIBLE) { 3179 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3180 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3181 return PROCESS_STATE_TOP_SLEEPING; 3182 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3183 return PROCESS_STATE_FOREGROUND_SERVICE; 3184 } else { 3185 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3186 } 3187 } 3188 3189 /** 3190 * The relative importance level that the system places on this 3191 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 3192 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, or 3193 * {@link #IMPORTANCE_CACHED}. These 3194 * constants are numbered so that "more important" values are always 3195 * smaller than "less important" values. 3196 */ 3197 public int importance; 3198 3199 /** 3200 * An additional ordering within a particular {@link #importance} 3201 * category, providing finer-grained information about the relative 3202 * utility of processes within a category. This number means nothing 3203 * except that a smaller values are more recently used (and thus 3204 * more important). Currently an LRU value is only maintained for 3205 * the {@link #IMPORTANCE_CACHED} category, though others may 3206 * be maintained in the future. 3207 */ 3208 public int lru; 3209 3210 /** 3211 * Constant for {@link #importanceReasonCode}: nothing special has 3212 * been specified for the reason for this level. 3213 */ 3214 public static final int REASON_UNKNOWN = 0; 3215 3216 /** 3217 * Constant for {@link #importanceReasonCode}: one of the application's 3218 * content providers is being used by another process. The pid of 3219 * the client process is in {@link #importanceReasonPid} and the 3220 * target provider in this process is in 3221 * {@link #importanceReasonComponent}. 3222 */ 3223 public static final int REASON_PROVIDER_IN_USE = 1; 3224 3225 /** 3226 * Constant for {@link #importanceReasonCode}: one of the application's 3227 * content providers is being used by another process. The pid of 3228 * the client process is in {@link #importanceReasonPid} and the 3229 * target provider in this process is in 3230 * {@link #importanceReasonComponent}. 3231 */ 3232 public static final int REASON_SERVICE_IN_USE = 2; 3233 3234 /** 3235 * The reason for {@link #importance}, if any. 3236 */ 3237 public int importanceReasonCode; 3238 3239 /** 3240 * For the specified values of {@link #importanceReasonCode}, this 3241 * is the process ID of the other process that is a client of this 3242 * process. This will be 0 if no other process is using this one. 3243 */ 3244 public int importanceReasonPid; 3245 3246 /** 3247 * For the specified values of {@link #importanceReasonCode}, this 3248 * is the name of the component that is being used in this process. 3249 */ 3250 public ComponentName importanceReasonComponent; 3251 3252 /** 3253 * When {@link #importanceReasonPid} is non-0, this is the importance 3254 * of the other pid. @hide 3255 */ 3256 public int importanceReasonImportance; 3257 3258 /** 3259 * Current process state, as per PROCESS_STATE_* constants. 3260 * @hide 3261 */ 3262 public int processState; 3263 3264 public RunningAppProcessInfo() { 3265 importance = IMPORTANCE_FOREGROUND; 3266 importanceReasonCode = REASON_UNKNOWN; 3267 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3268 } 3269 3270 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3271 processName = pProcessName; 3272 pid = pPid; 3273 pkgList = pArr; 3274 } 3275 3276 public int describeContents() { 3277 return 0; 3278 } 3279 3280 public void writeToParcel(Parcel dest, int flags) { 3281 dest.writeString(processName); 3282 dest.writeInt(pid); 3283 dest.writeInt(uid); 3284 dest.writeStringArray(pkgList); 3285 dest.writeInt(this.flags); 3286 dest.writeInt(lastTrimLevel); 3287 dest.writeInt(importance); 3288 dest.writeInt(lru); 3289 dest.writeInt(importanceReasonCode); 3290 dest.writeInt(importanceReasonPid); 3291 ComponentName.writeToParcel(importanceReasonComponent, dest); 3292 dest.writeInt(importanceReasonImportance); 3293 dest.writeInt(processState); 3294 } 3295 3296 public void readFromParcel(Parcel source) { 3297 processName = source.readString(); 3298 pid = source.readInt(); 3299 uid = source.readInt(); 3300 pkgList = source.readStringArray(); 3301 flags = source.readInt(); 3302 lastTrimLevel = source.readInt(); 3303 importance = source.readInt(); 3304 lru = source.readInt(); 3305 importanceReasonCode = source.readInt(); 3306 importanceReasonPid = source.readInt(); 3307 importanceReasonComponent = ComponentName.readFromParcel(source); 3308 importanceReasonImportance = source.readInt(); 3309 processState = source.readInt(); 3310 } 3311 3312 public static final Creator<RunningAppProcessInfo> CREATOR = 3313 new Creator<RunningAppProcessInfo>() { 3314 public RunningAppProcessInfo createFromParcel(Parcel source) { 3315 return new RunningAppProcessInfo(source); 3316 } 3317 public RunningAppProcessInfo[] newArray(int size) { 3318 return new RunningAppProcessInfo[size]; 3319 } 3320 }; 3321 3322 private RunningAppProcessInfo(Parcel source) { 3323 readFromParcel(source); 3324 } 3325 } 3326 3327 /** 3328 * Returns a list of application processes installed on external media 3329 * that are running on the device. 3330 * 3331 * <p><b>Note: this method is only intended for debugging or building 3332 * a user-facing process management UI.</b></p> 3333 * 3334 * @return Returns a list of ApplicationInfo records, or null if none 3335 * This list ordering is not specified. 3336 * @hide 3337 */ 3338 public List<ApplicationInfo> getRunningExternalApplications() { 3339 try { 3340 return getService().getRunningExternalApplications(); 3341 } catch (RemoteException e) { 3342 throw e.rethrowFromSystemServer(); 3343 } 3344 } 3345 3346 /** 3347 * Sets the memory trim mode for a process and schedules a memory trim operation. 3348 * 3349 * <p><b>Note: this method is only intended for testing framework.</b></p> 3350 * 3351 * @return Returns true if successful. 3352 * @hide 3353 */ 3354 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3355 try { 3356 return getService().setProcessMemoryTrimLevel(process, userId, 3357 level); 3358 } catch (RemoteException e) { 3359 throw e.rethrowFromSystemServer(); 3360 } 3361 } 3362 3363 /** 3364 * Returns a list of application processes that are running on the device. 3365 * 3366 * <p><b>Note: this method is only intended for debugging or building 3367 * a user-facing process management UI.</b></p> 3368 * 3369 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3370 * running processes (it will not return an empty list). This list ordering is not 3371 * specified. 3372 */ 3373 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3374 try { 3375 return getService().getRunningAppProcesses(); 3376 } catch (RemoteException e) { 3377 throw e.rethrowFromSystemServer(); 3378 } 3379 } 3380 3381 /** 3382 * Return the importance of a given package name, based on the processes that are 3383 * currently running. The return value is one of the importance constants defined 3384 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3385 * processes that this package has code running inside of. If there are no processes 3386 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3387 * @hide 3388 */ 3389 @SystemApi @TestApi 3390 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3391 public int getPackageImportance(String packageName) { 3392 try { 3393 int procState = getService().getPackageProcessState(packageName, 3394 mContext.getOpPackageName()); 3395 return RunningAppProcessInfo.procStateToImportance(procState); 3396 } catch (RemoteException e) { 3397 throw e.rethrowFromSystemServer(); 3398 } 3399 } 3400 3401 /** 3402 * Callback to get reports about changes to the importance of a uid. Use with 3403 * {@link #addOnUidImportanceListener}. 3404 * @hide 3405 */ 3406 @SystemApi @TestApi 3407 public interface OnUidImportanceListener { 3408 /** 3409 * The importance if a given uid has changed. Will be one of the importance 3410 * values in {@link RunningAppProcessInfo}; 3411 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3412 * when the uid is no longer running at all. This callback will happen on a thread 3413 * from a thread pool, not the main UI thread. 3414 * @param uid The uid whose importance has changed. 3415 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3416 */ 3417 void onUidImportance(int uid, int importance); 3418 } 3419 3420 /** 3421 * Start monitoring changes to the imoportance of uids running in the system. 3422 * @param listener The listener callback that will receive change reports. 3423 * @param importanceCutpoint The level of importance in which the caller is interested 3424 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3425 * is used here, you will receive a call each time a uids importance transitions between 3426 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3427 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3428 * 3429 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3430 * permission to use this feature.</p> 3431 * 3432 * @throws IllegalArgumentException If the listener is already registered. 3433 * @throws SecurityException If the caller does not hold 3434 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3435 * @hide 3436 */ 3437 @SystemApi @TestApi 3438 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3439 int importanceCutpoint) { 3440 synchronized (this) { 3441 if (mImportanceListeners.containsKey(listener)) { 3442 throw new IllegalArgumentException("Listener already registered: " + listener); 3443 } 3444 // TODO: implement the cut point in the system process to avoid IPCs. 3445 UidObserver observer = new UidObserver(listener); 3446 try { 3447 getService().registerUidObserver(observer, 3448 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3449 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3450 mContext.getOpPackageName()); 3451 } catch (RemoteException e) { 3452 throw e.rethrowFromSystemServer(); 3453 } 3454 mImportanceListeners.put(listener, observer); 3455 } 3456 } 3457 3458 /** 3459 * Remove an importance listener that was previously registered with 3460 * {@link #addOnUidImportanceListener}. 3461 * 3462 * @throws IllegalArgumentException If the listener is not registered. 3463 * @hide 3464 */ 3465 @SystemApi @TestApi 3466 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3467 synchronized (this) { 3468 UidObserver observer = mImportanceListeners.remove(listener); 3469 if (observer == null) { 3470 throw new IllegalArgumentException("Listener not registered: " + listener); 3471 } 3472 try { 3473 getService().unregisterUidObserver(observer); 3474 } catch (RemoteException e) { 3475 throw e.rethrowFromSystemServer(); 3476 } 3477 } 3478 } 3479 3480 /** 3481 * Return global memory state information for the calling process. This 3482 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3483 * only fields that will be filled in are 3484 * {@link RunningAppProcessInfo#pid}, 3485 * {@link RunningAppProcessInfo#uid}, 3486 * {@link RunningAppProcessInfo#lastTrimLevel}, 3487 * {@link RunningAppProcessInfo#importance}, 3488 * {@link RunningAppProcessInfo#lru}, and 3489 * {@link RunningAppProcessInfo#importanceReasonCode}. 3490 */ 3491 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3492 try { 3493 getService().getMyMemoryState(outState); 3494 } catch (RemoteException e) { 3495 throw e.rethrowFromSystemServer(); 3496 } 3497 } 3498 3499 /** 3500 * Return information about the memory usage of one or more processes. 3501 * 3502 * <p><b>Note: this method is only intended for debugging or building 3503 * a user-facing process management UI.</b></p> 3504 * 3505 * @param pids The pids of the processes whose memory usage is to be 3506 * retrieved. 3507 * @return Returns an array of memory information, one for each 3508 * requested pid. 3509 */ 3510 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3511 try { 3512 return getService().getProcessMemoryInfo(pids); 3513 } catch (RemoteException e) { 3514 throw e.rethrowFromSystemServer(); 3515 } 3516 } 3517 3518 /** 3519 * @deprecated This is now just a wrapper for 3520 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3521 * is no longer available to applications because it allows them to 3522 * break other applications by removing their alarms, stopping their 3523 * services, etc. 3524 */ 3525 @Deprecated 3526 public void restartPackage(String packageName) { 3527 killBackgroundProcesses(packageName); 3528 } 3529 3530 /** 3531 * Have the system immediately kill all background processes associated 3532 * with the given package. This is the same as the kernel killing those 3533 * processes to reclaim memory; the system will take care of restarting 3534 * these processes in the future as needed. 3535 * 3536 * <p>You must hold the permission 3537 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3538 * call this method. 3539 * 3540 * @param packageName The name of the package whose processes are to 3541 * be killed. 3542 */ 3543 public void killBackgroundProcesses(String packageName) { 3544 try { 3545 getService().killBackgroundProcesses(packageName, 3546 UserHandle.myUserId()); 3547 } catch (RemoteException e) { 3548 throw e.rethrowFromSystemServer(); 3549 } 3550 } 3551 3552 /** 3553 * Kills the specified UID. 3554 * @param uid The UID to kill. 3555 * @param reason The reason for the kill. 3556 * 3557 * @hide 3558 */ 3559 @SystemApi 3560 @RequiresPermission(Manifest.permission.KILL_UID) 3561 public void killUid(int uid, String reason) { 3562 try { 3563 getService().killUid(UserHandle.getAppId(uid), 3564 UserHandle.getUserId(uid), reason); 3565 } catch (RemoteException e) { 3566 throw e.rethrowFromSystemServer(); 3567 } 3568 } 3569 3570 /** 3571 * Have the system perform a force stop of everything associated with 3572 * the given application package. All processes that share its uid 3573 * will be killed, all services it has running stopped, all activities 3574 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3575 * broadcast will be sent, so that any of its registered alarms can 3576 * be stopped, notifications removed, etc. 3577 * 3578 * <p>You must hold the permission 3579 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3580 * call this method. 3581 * 3582 * @param packageName The name of the package to be stopped. 3583 * @param userId The user for which the running package is to be stopped. 3584 * 3585 * @hide This is not available to third party applications due to 3586 * it allowing them to break other applications by stopping their 3587 * services, removing their alarms, etc. 3588 */ 3589 public void forceStopPackageAsUser(String packageName, int userId) { 3590 try { 3591 getService().forceStopPackage(packageName, userId); 3592 } catch (RemoteException e) { 3593 throw e.rethrowFromSystemServer(); 3594 } 3595 } 3596 3597 /** 3598 * @see #forceStopPackageAsUser(String, int) 3599 * @hide 3600 */ 3601 @SystemApi 3602 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3603 public void forceStopPackage(String packageName) { 3604 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3605 } 3606 3607 /** 3608 * Get the device configuration attributes. 3609 */ 3610 public ConfigurationInfo getDeviceConfigurationInfo() { 3611 try { 3612 return getService().getDeviceConfigurationInfo(); 3613 } catch (RemoteException e) { 3614 throw e.rethrowFromSystemServer(); 3615 } 3616 } 3617 3618 /** 3619 * Get the preferred density of icons for the launcher. This is used when 3620 * custom drawables are created (e.g., for shortcuts). 3621 * 3622 * @return density in terms of DPI 3623 */ 3624 public int getLauncherLargeIconDensity() { 3625 final Resources res = mContext.getResources(); 3626 final int density = res.getDisplayMetrics().densityDpi; 3627 final int sw = res.getConfiguration().smallestScreenWidthDp; 3628 3629 if (sw < 600) { 3630 // Smaller than approx 7" tablets, use the regular icon size. 3631 return density; 3632 } 3633 3634 switch (density) { 3635 case DisplayMetrics.DENSITY_LOW: 3636 return DisplayMetrics.DENSITY_MEDIUM; 3637 case DisplayMetrics.DENSITY_MEDIUM: 3638 return DisplayMetrics.DENSITY_HIGH; 3639 case DisplayMetrics.DENSITY_TV: 3640 return DisplayMetrics.DENSITY_XHIGH; 3641 case DisplayMetrics.DENSITY_HIGH: 3642 return DisplayMetrics.DENSITY_XHIGH; 3643 case DisplayMetrics.DENSITY_XHIGH: 3644 return DisplayMetrics.DENSITY_XXHIGH; 3645 case DisplayMetrics.DENSITY_XXHIGH: 3646 return DisplayMetrics.DENSITY_XHIGH * 2; 3647 default: 3648 // The density is some abnormal value. Return some other 3649 // abnormal value that is a reasonable scaling of it. 3650 return (int)((density*1.5f)+.5f); 3651 } 3652 } 3653 3654 /** 3655 * Get the preferred launcher icon size. This is used when custom drawables 3656 * are created (e.g., for shortcuts). 3657 * 3658 * @return dimensions of square icons in terms of pixels 3659 */ 3660 public int getLauncherLargeIconSize() { 3661 return getLauncherLargeIconSizeInner(mContext); 3662 } 3663 3664 static int getLauncherLargeIconSizeInner(Context context) { 3665 final Resources res = context.getResources(); 3666 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3667 final int sw = res.getConfiguration().smallestScreenWidthDp; 3668 3669 if (sw < 600) { 3670 // Smaller than approx 7" tablets, use the regular icon size. 3671 return size; 3672 } 3673 3674 final int density = res.getDisplayMetrics().densityDpi; 3675 3676 switch (density) { 3677 case DisplayMetrics.DENSITY_LOW: 3678 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3679 case DisplayMetrics.DENSITY_MEDIUM: 3680 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3681 case DisplayMetrics.DENSITY_TV: 3682 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3683 case DisplayMetrics.DENSITY_HIGH: 3684 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3685 case DisplayMetrics.DENSITY_XHIGH: 3686 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3687 case DisplayMetrics.DENSITY_XXHIGH: 3688 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3689 default: 3690 // The density is some abnormal value. Return some other 3691 // abnormal value that is a reasonable scaling of it. 3692 return (int)((size*1.5f) + .5f); 3693 } 3694 } 3695 3696 /** 3697 * Returns "true" if the user interface is currently being messed with 3698 * by a monkey. 3699 */ 3700 public static boolean isUserAMonkey() { 3701 try { 3702 return getService().isUserAMonkey(); 3703 } catch (RemoteException e) { 3704 throw e.rethrowFromSystemServer(); 3705 } 3706 } 3707 3708 /** 3709 * Returns "true" if device is running in a test harness. 3710 */ 3711 public static boolean isRunningInTestHarness() { 3712 return SystemProperties.getBoolean("ro.test_harness", false); 3713 } 3714 3715 /** 3716 * Returns the launch count of each installed package. 3717 * 3718 * @hide 3719 */ 3720 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3721 try { 3722 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3723 ServiceManager.getService("usagestats")); 3724 if (usageStatsService == null) { 3725 return new HashMap<String, Integer>(); 3726 } 3727 3728 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3729 ActivityThread.currentPackageName()); 3730 if (allPkgUsageStats == null) { 3731 return new HashMap<String, Integer>(); 3732 } 3733 3734 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3735 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3736 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3737 } 3738 3739 return launchCounts; 3740 } catch (RemoteException e) { 3741 Log.w(TAG, "Could not query launch counts", e); 3742 return new HashMap<String, Integer>(); 3743 } 3744 }*/ 3745 3746 /** @hide */ 3747 public static int checkComponentPermission(String permission, int uid, 3748 int owningUid, boolean exported) { 3749 // Root, system server get to do everything. 3750 final int appId = UserHandle.getAppId(uid); 3751 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3752 return PackageManager.PERMISSION_GRANTED; 3753 } 3754 // Isolated processes don't get any permissions. 3755 if (UserHandle.isIsolated(uid)) { 3756 return PackageManager.PERMISSION_DENIED; 3757 } 3758 // If there is a uid that owns whatever is being accessed, it has 3759 // blanket access to it regardless of the permissions it requires. 3760 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3761 return PackageManager.PERMISSION_GRANTED; 3762 } 3763 // If the target is not exported, then nobody else can get to it. 3764 if (!exported) { 3765 /* 3766 RuntimeException here = new RuntimeException("here"); 3767 here.fillInStackTrace(); 3768 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3769 here); 3770 */ 3771 return PackageManager.PERMISSION_DENIED; 3772 } 3773 if (permission == null) { 3774 return PackageManager.PERMISSION_GRANTED; 3775 } 3776 try { 3777 return AppGlobals.getPackageManager() 3778 .checkUidPermission(permission, uid); 3779 } catch (RemoteException e) { 3780 throw e.rethrowFromSystemServer(); 3781 } 3782 } 3783 3784 /** @hide */ 3785 public static int checkUidPermission(String permission, int uid) { 3786 try { 3787 return AppGlobals.getPackageManager() 3788 .checkUidPermission(permission, uid); 3789 } catch (RemoteException e) { 3790 throw e.rethrowFromSystemServer(); 3791 } 3792 } 3793 3794 /** 3795 * @hide 3796 * Helper for dealing with incoming user arguments to system service calls. 3797 * Takes care of checking permissions and converting USER_CURRENT to the 3798 * actual current user. 3799 * 3800 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3801 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3802 * @param userId The user id argument supplied by the caller -- this is the user 3803 * they want to run as. 3804 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3805 * to get a USER_ALL returned and deal with it correctly. If false, 3806 * an exception will be thrown if USER_ALL is supplied. 3807 * @param requireFull If true, the caller must hold 3808 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3809 * different user than their current process; otherwise they must hold 3810 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3811 * @param name Optional textual name of the incoming call; only for generating error messages. 3812 * @param callerPackage Optional package name of caller; only for error messages. 3813 * 3814 * @return Returns the user ID that the call should run as. Will always be a concrete 3815 * user number, unless <var>allowAll</var> is true in which case it could also be 3816 * USER_ALL. 3817 */ 3818 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3819 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3820 if (UserHandle.getUserId(callingUid) == userId) { 3821 return userId; 3822 } 3823 try { 3824 return getService().handleIncomingUser(callingPid, 3825 callingUid, userId, allowAll, requireFull, name, callerPackage); 3826 } catch (RemoteException e) { 3827 throw e.rethrowFromSystemServer(); 3828 } 3829 } 3830 3831 /** 3832 * Gets the userId of the current foreground user. Requires system permissions. 3833 * @hide 3834 */ 3835 @SystemApi 3836 public static int getCurrentUser() { 3837 UserInfo ui; 3838 try { 3839 ui = getService().getCurrentUser(); 3840 return ui != null ? ui.id : 0; 3841 } catch (RemoteException e) { 3842 throw e.rethrowFromSystemServer(); 3843 } 3844 } 3845 3846 /** 3847 * @param userid the user's id. Zero indicates the default user. 3848 * @hide 3849 */ 3850 public boolean switchUser(int userid) { 3851 try { 3852 return getService().switchUser(userid); 3853 } catch (RemoteException e) { 3854 throw e.rethrowFromSystemServer(); 3855 } 3856 } 3857 3858 /** 3859 * Logs out current current foreground user by switching to the system user and stopping the 3860 * user being switched from. 3861 * @hide 3862 */ 3863 public static void logoutCurrentUser() { 3864 int currentUser = ActivityManager.getCurrentUser(); 3865 if (currentUser != UserHandle.USER_SYSTEM) { 3866 try { 3867 getService().switchUser(UserHandle.USER_SYSTEM); 3868 getService().stopUser(currentUser, /* force= */ false, null); 3869 } catch (RemoteException e) { 3870 e.rethrowFromSystemServer(); 3871 } 3872 } 3873 } 3874 3875 /** {@hide} */ 3876 public static final int FLAG_OR_STOPPED = 1 << 0; 3877 /** {@hide} */ 3878 public static final int FLAG_AND_LOCKED = 1 << 1; 3879 /** {@hide} */ 3880 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3881 /** {@hide} */ 3882 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3883 3884 /** 3885 * Return whether the given user is actively running. This means that 3886 * the user is in the "started" state, not "stopped" -- it is currently 3887 * allowed to run code through scheduled alarms, receiving broadcasts, 3888 * etc. A started user may be either the current foreground user or a 3889 * background user; the result here does not distinguish between the two. 3890 * @param userId the user's id. Zero indicates the default user. 3891 * @hide 3892 */ 3893 public boolean isUserRunning(int userId) { 3894 try { 3895 return getService().isUserRunning(userId, 0); 3896 } catch (RemoteException e) { 3897 throw e.rethrowFromSystemServer(); 3898 } 3899 } 3900 3901 /** {@hide} */ 3902 public boolean isVrModePackageEnabled(ComponentName component) { 3903 try { 3904 return getService().isVrModePackageEnabled(component); 3905 } catch (RemoteException e) { 3906 throw e.rethrowFromSystemServer(); 3907 } 3908 } 3909 3910 /** 3911 * Perform a system dump of various state associated with the given application 3912 * package name. This call blocks while the dump is being performed, so should 3913 * not be done on a UI thread. The data will be written to the given file 3914 * descriptor as text. An application must hold the 3915 * {@link android.Manifest.permission#DUMP} permission to make this call. 3916 * @param fd The file descriptor that the dump should be written to. The file 3917 * descriptor is <em>not</em> closed by this function; the caller continues to 3918 * own it. 3919 * @param packageName The name of the package that is to be dumped. 3920 */ 3921 public void dumpPackageState(FileDescriptor fd, String packageName) { 3922 dumpPackageStateStatic(fd, packageName); 3923 } 3924 3925 /** 3926 * @hide 3927 */ 3928 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3929 FileOutputStream fout = new FileOutputStream(fd); 3930 PrintWriter pw = new FastPrintWriter(fout); 3931 dumpService(pw, fd, "package", new String[] { packageName }); 3932 pw.println(); 3933 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3934 "-a", "package", packageName }); 3935 pw.println(); 3936 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3937 pw.println(); 3938 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3939 pw.println(); 3940 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3941 pw.println(); 3942 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3943 pw.flush(); 3944 } 3945 3946 /** 3947 * @hide 3948 */ 3949 public static boolean isSystemReady() { 3950 if (!sSystemReady) { 3951 if (ActivityThread.isSystem()) { 3952 sSystemReady = 3953 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3954 } else { 3955 // Since this is being called from outside system server, system should be 3956 // ready by now. 3957 sSystemReady = true; 3958 } 3959 } 3960 return sSystemReady; 3961 } 3962 3963 /** 3964 * @hide 3965 */ 3966 public static void broadcastStickyIntent(Intent intent, int userId) { 3967 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3968 } 3969 3970 /** 3971 * Convenience for sending a sticky broadcast. For internal use only. 3972 * 3973 * @hide 3974 */ 3975 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3976 try { 3977 getService().broadcastIntent( 3978 null, intent, null, null, Activity.RESULT_OK, null, null, 3979 null /*permission*/, appOp, null, false, true, userId); 3980 } catch (RemoteException ex) { 3981 } 3982 } 3983 3984 /** 3985 * @hide 3986 */ 3987 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3988 String tag) { 3989 try { 3990 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3991 sourceUid, sourcePkg, tag); 3992 } catch (RemoteException ex) { 3993 } 3994 } 3995 3996 /** 3997 * @hide 3998 */ 3999 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 4000 try { 4001 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4002 } catch (RemoteException ex) { 4003 } 4004 } 4005 4006 /** 4007 * @hide 4008 */ 4009 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 4010 try { 4011 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4012 } catch (RemoteException ex) { 4013 } 4014 } 4015 4016 /** 4017 * @hide 4018 */ 4019 public static IActivityManager getService() { 4020 return IActivityManagerSingleton.get(); 4021 } 4022 4023 private static final Singleton<IActivityManager> IActivityManagerSingleton = 4024 new Singleton<IActivityManager>() { 4025 @Override 4026 protected IActivityManager create() { 4027 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 4028 final IActivityManager am = IActivityManager.Stub.asInterface(b); 4029 return am; 4030 } 4031 }; 4032 4033 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 4034 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 4035 IBinder service = ServiceManager.checkService(name); 4036 if (service == null) { 4037 pw.println(" (Service not found)"); 4038 return; 4039 } 4040 TransferPipe tp = null; 4041 try { 4042 pw.flush(); 4043 tp = new TransferPipe(); 4044 tp.setBufferPrefix(" "); 4045 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 4046 tp.go(fd, 10000); 4047 } catch (Throwable e) { 4048 if (tp != null) { 4049 tp.kill(); 4050 } 4051 pw.println("Failure dumping service:"); 4052 e.printStackTrace(pw); 4053 } 4054 } 4055 4056 /** 4057 * Request that the system start watching for the calling process to exceed a pss 4058 * size as given here. Once called, the system will look for any occasions where it 4059 * sees the associated process with a larger pss size and, when this happens, automatically 4060 * pull a heap dump from it and allow the user to share the data. Note that this request 4061 * continues running even if the process is killed and restarted. To remove the watch, 4062 * use {@link #clearWatchHeapLimit()}. 4063 * 4064 * <p>This API only work if the calling process has been marked as 4065 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4066 * (userdebug or eng) build.</p> 4067 * 4068 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4069 * handle heap limit reports themselves.</p> 4070 * 4071 * @param pssSize The size in bytes to set the limit at. 4072 */ 4073 public void setWatchHeapLimit(long pssSize) { 4074 try { 4075 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4076 mContext.getPackageName()); 4077 } catch (RemoteException e) { 4078 throw e.rethrowFromSystemServer(); 4079 } 4080 } 4081 4082 /** 4083 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4084 * If your package has an activity handling this action, it will be launched with the 4085 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4086 * match the activty must support this action and a MIME type of "*/*". 4087 */ 4088 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4089 4090 /** 4091 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4092 */ 4093 public void clearWatchHeapLimit() { 4094 try { 4095 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4096 } catch (RemoteException e) { 4097 throw e.rethrowFromSystemServer(); 4098 } 4099 } 4100 4101 /** 4102 * @hide 4103 */ 4104 public void startLockTaskMode(int taskId) { 4105 try { 4106 getService().startLockTaskModeById(taskId); 4107 } catch (RemoteException e) { 4108 throw e.rethrowFromSystemServer(); 4109 } 4110 } 4111 4112 /** 4113 * @hide 4114 */ 4115 public void stopLockTaskMode() { 4116 try { 4117 getService().stopLockTaskMode(); 4118 } catch (RemoteException e) { 4119 throw e.rethrowFromSystemServer(); 4120 } 4121 } 4122 4123 /** 4124 * Return whether currently in lock task mode. When in this mode 4125 * no new tasks can be created or switched to. 4126 * 4127 * @see Activity#startLockTask() 4128 * 4129 * @deprecated Use {@link #getLockTaskModeState} instead. 4130 */ 4131 @Deprecated 4132 public boolean isInLockTaskMode() { 4133 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4134 } 4135 4136 /** 4137 * Return the current state of task locking. The three possible outcomes 4138 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4139 * and {@link #LOCK_TASK_MODE_PINNED}. 4140 * 4141 * @see Activity#startLockTask() 4142 */ 4143 public int getLockTaskModeState() { 4144 try { 4145 return getService().getLockTaskModeState(); 4146 } catch (RemoteException e) { 4147 throw e.rethrowFromSystemServer(); 4148 } 4149 } 4150 4151 /** 4152 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4153 * thread can be a VR thread in a process at a time, and that thread may be subject to 4154 * restrictions on the amount of time it can run. 4155 * 4156 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4157 * method will return to normal operation, and calling this method will do nothing while 4158 * persistent VR mode is enabled. 4159 * 4160 * To reset the VR thread for an application, a tid of 0 can be passed. 4161 * 4162 * @see android.os.Process#myTid() 4163 * @param tid tid of the VR thread 4164 */ 4165 public static void setVrThread(int tid) { 4166 try { 4167 getService().setVrThread(tid); 4168 } catch (RemoteException e) { 4169 // pass 4170 } 4171 } 4172 4173 /** 4174 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4175 * beyond a single process. It requires holding the 4176 * {@link android.Manifest.permission#RESTRICTED_VR_ACCESS} permission. Only one thread can be a 4177 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4178 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4179 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4180 * persistent VR thread loses its new scheduling priority; this method must be called again to 4181 * set the persistent thread. 4182 * 4183 * To reset the persistent VR thread, a tid of 0 can be passed. 4184 * 4185 * @see android.os.Process#myTid() 4186 * @param tid tid of the VR thread 4187 * @hide 4188 */ 4189 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4190 public static void setPersistentVrThread(int tid) { 4191 try { 4192 getService().setPersistentVrThread(tid); 4193 } catch (RemoteException e) { 4194 // pass 4195 } 4196 } 4197 4198 /** 4199 * The AppTask allows you to manage your own application's tasks. 4200 * See {@link android.app.ActivityManager#getAppTasks()} 4201 */ 4202 public static class AppTask { 4203 private IAppTask mAppTaskImpl; 4204 4205 /** @hide */ 4206 public AppTask(IAppTask task) { 4207 mAppTaskImpl = task; 4208 } 4209 4210 /** 4211 * Finishes all activities in this task and removes it from the recent tasks list. 4212 */ 4213 public void finishAndRemoveTask() { 4214 try { 4215 mAppTaskImpl.finishAndRemoveTask(); 4216 } catch (RemoteException e) { 4217 throw e.rethrowFromSystemServer(); 4218 } 4219 } 4220 4221 /** 4222 * Get the RecentTaskInfo associated with this task. 4223 * 4224 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4225 */ 4226 public RecentTaskInfo getTaskInfo() { 4227 try { 4228 return mAppTaskImpl.getTaskInfo(); 4229 } catch (RemoteException e) { 4230 throw e.rethrowFromSystemServer(); 4231 } 4232 } 4233 4234 /** 4235 * Bring this task to the foreground. If it contains activities, they will be 4236 * brought to the foreground with it and their instances re-created if needed. 4237 * If it doesn't contain activities, the root activity of the task will be 4238 * re-launched. 4239 */ 4240 public void moveToFront() { 4241 try { 4242 mAppTaskImpl.moveToFront(); 4243 } catch (RemoteException e) { 4244 throw e.rethrowFromSystemServer(); 4245 } 4246 } 4247 4248 /** 4249 * Start an activity in this task. Brings the task to the foreground. If this task 4250 * is not currently active (that is, its id < 0), then a new activity for the given 4251 * Intent will be launched as the root of the task and the task brought to the 4252 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4253 * an activity to launch in a new task, then a new activity for the given Intent will 4254 * be launched on top of the task and the task brought to the foreground. If this 4255 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4256 * or would otherwise be launched in to a new task, then the activity not launched but 4257 * this task be brought to the foreground and a new intent delivered to the top 4258 * activity if appropriate. 4259 * 4260 * <p>In other words, you generally want to use an Intent here that does not specify 4261 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4262 * and let the system do the right thing.</p> 4263 * 4264 * @param intent The Intent describing the new activity to be launched on the task. 4265 * @param options Optional launch options. 4266 * 4267 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4268 */ 4269 public void startActivity(Context context, Intent intent, Bundle options) { 4270 ActivityThread thread = ActivityThread.currentActivityThread(); 4271 thread.getInstrumentation().execStartActivityFromAppTask(context, 4272 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4273 } 4274 4275 /** 4276 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4277 * Intent of this AppTask. 4278 * 4279 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4280 * be set; otherwise, it will be cleared. 4281 */ 4282 public void setExcludeFromRecents(boolean exclude) { 4283 try { 4284 mAppTaskImpl.setExcludeFromRecents(exclude); 4285 } catch (RemoteException e) { 4286 throw e.rethrowFromSystemServer(); 4287 } 4288 } 4289 } 4290} 4291