ActivityManager.java revision fb44d212f267074a305eb34fa064b6d6904aa3ef
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.SystemService; 26import android.annotation.TestApi; 27import android.content.ComponentName; 28import android.content.Context; 29import android.content.Intent; 30import android.content.UriPermission; 31import android.content.pm.ActivityInfo; 32import android.content.pm.ApplicationInfo; 33import android.content.pm.ConfigurationInfo; 34import android.content.pm.IPackageDataObserver; 35import android.content.pm.PackageManager; 36import android.content.pm.ParceledListSlice; 37import android.content.pm.UserInfo; 38import android.content.res.Configuration; 39import android.content.res.Resources; 40import android.graphics.Bitmap; 41import android.graphics.Canvas; 42import android.graphics.Color; 43import android.graphics.GraphicBuffer; 44import android.graphics.Matrix; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.os.BatteryStats; 48import android.os.Build; 49import android.os.Build.VERSION_CODES; 50import android.os.Bundle; 51import android.os.Debug; 52import android.os.Handler; 53import android.os.IBinder; 54import android.os.Parcel; 55import android.os.Parcelable; 56import android.os.Process; 57import android.os.RemoteException; 58import android.os.ServiceManager; 59import android.os.SystemProperties; 60import android.os.UserHandle; 61import android.text.TextUtils; 62import android.util.ArrayMap; 63import android.util.DisplayMetrics; 64import android.util.Singleton; 65import android.util.Size; 66 67import com.android.internal.app.procstats.ProcessStats; 68import com.android.internal.os.RoSystemProperties; 69import com.android.internal.os.TransferPipe; 70import com.android.internal.util.FastPrintWriter; 71import com.android.server.LocalServices; 72 73import org.xmlpull.v1.XmlSerializer; 74 75import java.io.FileDescriptor; 76import java.io.FileOutputStream; 77import java.io.IOException; 78import java.io.PrintWriter; 79import java.lang.annotation.Retention; 80import java.lang.annotation.RetentionPolicy; 81import java.util.ArrayList; 82import java.util.List; 83 84/** 85 * <p> 86 * This class gives information about, and interacts 87 * with, activities, services, and the containing 88 * process. 89 * </p> 90 * 91 * <p> 92 * A number of the methods in this class are for 93 * debugging or informational purposes and they should 94 * not be used to affect any runtime behavior of 95 * your app. These methods are called out as such in 96 * the method level documentation. 97 * </p> 98 * 99 *<p> 100 * Most application developers should not have the need to 101 * use this class, most of whose methods are for specialized 102 * use cases. However, a few methods are more broadly applicable. 103 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 104 * enables your app to detect whether it is running on a low-memory device, 105 * and behave accordingly. 106 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 107 * is for apps with reset-data functionality. 108 * </p> 109 * 110 * <p> 111 * In some special use cases, where an app interacts with 112 * its Task stack, the app may use the 113 * {@link android.app.ActivityManager.AppTask} and 114 * {@link android.app.ActivityManager.RecentTaskInfo} inner 115 * classes. However, in general, the methods in this class should 116 * be used for testing and debugging purposes only. 117 * </p> 118 */ 119@SystemService(Context.ACTIVITY_SERVICE) 120public class ActivityManager { 121 private static String TAG = "ActivityManager"; 122 123 private static int gMaxRecentTasks = -1; 124 125 private final Context mContext; 126 127 private static volatile boolean sSystemReady = false; 128 129 130 private static final int FIRST_START_FATAL_ERROR_CODE = -100; 131 private static final int LAST_START_FATAL_ERROR_CODE = -1; 132 private static final int FIRST_START_SUCCESS_CODE = 0; 133 private static final int LAST_START_SUCCESS_CODE = 99; 134 private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; 135 private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; 136 137 static final class UidObserver extends IUidObserver.Stub { 138 final OnUidImportanceListener mListener; 139 final Context mContext; 140 141 UidObserver(OnUidImportanceListener listener, Context clientContext) { 142 mListener = listener; 143 mContext = clientContext; 144 } 145 146 @Override 147 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 148 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 149 procState, mContext)); 150 } 151 152 @Override 153 public void onUidGone(int uid, boolean disabled) { 154 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 155 } 156 157 @Override 158 public void onUidActive(int uid) { 159 } 160 161 @Override 162 public void onUidIdle(int uid, boolean disabled) { 163 } 164 165 @Override public void onUidCachedChanged(int uid, boolean cached) { 166 } 167 } 168 169 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 170 171 /** 172 * Defines acceptable types of bugreports. 173 * @hide 174 */ 175 @Retention(RetentionPolicy.SOURCE) 176 @IntDef({ 177 BUGREPORT_OPTION_FULL, 178 BUGREPORT_OPTION_INTERACTIVE, 179 BUGREPORT_OPTION_REMOTE, 180 BUGREPORT_OPTION_WEAR, 181 BUGREPORT_OPTION_TELEPHONY 182 }) 183 public @interface BugreportMode {} 184 /** 185 * Takes a bugreport without user interference (and hence causing less 186 * interference to the system), but includes all sections. 187 * @hide 188 */ 189 public static final int BUGREPORT_OPTION_FULL = 0; 190 /** 191 * Allows user to monitor progress and enter additional data; might not include all 192 * sections. 193 * @hide 194 */ 195 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 196 /** 197 * Takes a bugreport requested remotely by administrator of the Device Owner app, 198 * not the device's user. 199 * @hide 200 */ 201 public static final int BUGREPORT_OPTION_REMOTE = 2; 202 /** 203 * Takes a bugreport on a wearable device. 204 * @hide 205 */ 206 public static final int BUGREPORT_OPTION_WEAR = 3; 207 208 /** 209 * Takes a lightweight version of bugreport that only includes a few, urgent sections 210 * used to report telephony bugs. 211 * @hide 212 */ 213 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 214 215 /** 216 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 217 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 218 * uninstalled in lieu of the declaring one. The package named here must be 219 * signed with the same certificate as the one declaring the {@code <meta-data>}. 220 */ 221 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 222 223 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 224 // result is properly categorized. 225 226 /** 227 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 228 * @hide 229 */ 230 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 231 232 /** 233 * Result for IActivityManager.startVoiceActivity: active session does not match 234 * the requesting token. 235 * @hide 236 */ 237 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 238 239 /** 240 * Result for IActivityManager.startActivity: trying to start a background user 241 * activity that shouldn't be displayed for all users. 242 * @hide 243 */ 244 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 245 246 /** 247 * Result for IActivityManager.startActivity: trying to start an activity under voice 248 * control when that activity does not support the VOICE category. 249 * @hide 250 */ 251 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 252 253 /** 254 * Result for IActivityManager.startActivity: an error where the 255 * start had to be canceled. 256 * @hide 257 */ 258 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 259 260 /** 261 * Result for IActivityManager.startActivity: an error where the 262 * thing being started is not an activity. 263 * @hide 264 */ 265 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 266 267 /** 268 * Result for IActivityManager.startActivity: an error where the 269 * caller does not have permission to start the activity. 270 * @hide 271 */ 272 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 273 274 /** 275 * Result for IActivityManager.startActivity: an error where the 276 * caller has requested both to forward a result and to receive 277 * a result. 278 * @hide 279 */ 280 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 281 282 /** 283 * Result for IActivityManager.startActivity: an error where the 284 * requested class is not found. 285 * @hide 286 */ 287 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 288 289 /** 290 * Result for IActivityManager.startActivity: an error where the 291 * given Intent could not be resolved to an activity. 292 * @hide 293 */ 294 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 295 296 /** 297 * Result for IActivityManager.startAssistantActivity: active session is currently hidden. 298 * @hide 299 */ 300 public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; 301 302 /** 303 * Result for IActivityManager.startAssistantActivity: active session does not match 304 * the requesting token. 305 * @hide 306 */ 307 public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; 308 309 /** 310 * Result for IActivityManaqer.startActivity: the activity was started 311 * successfully as normal. 312 * @hide 313 */ 314 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 315 316 /** 317 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 318 * be executed if it is the recipient, and that is indeed the case. 319 * @hide 320 */ 321 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 322 323 /** 324 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 325 * a task was simply brought to the foreground. 326 * @hide 327 */ 328 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 329 330 /** 331 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 332 * the given Intent was given to the existing top activity. 333 * @hide 334 */ 335 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 336 337 /** 338 * Result for IActivityManaqer.startActivity: request was canceled because 339 * app switches are temporarily canceled to ensure the user's last request 340 * (such as pressing home) is performed. 341 * @hide 342 */ 343 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 344 345 /** 346 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 347 * while in Lock Task Mode. 348 * @hide 349 */ 350 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 351 FIRST_START_NON_FATAL_ERROR_CODE + 1; 352 353 /** 354 * Result for IActivityManaqer.startActivity: a new activity start was aborted. Never returned 355 * externally. 356 * @hide 357 */ 358 public static final int START_ABORTED = FIRST_START_NON_FATAL_ERROR_CODE + 2; 359 360 /** 361 * Flag for IActivityManaqer.startActivity: do special start mode where 362 * a new activity is launched only if it is needed. 363 * @hide 364 */ 365 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 366 367 /** 368 * Flag for IActivityManaqer.startActivity: launch the app for 369 * debugging. 370 * @hide 371 */ 372 public static final int START_FLAG_DEBUG = 1<<1; 373 374 /** 375 * Flag for IActivityManaqer.startActivity: launch the app for 376 * allocation tracking. 377 * @hide 378 */ 379 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 380 381 /** 382 * Flag for IActivityManaqer.startActivity: launch the app with 383 * native debugging support. 384 * @hide 385 */ 386 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 387 388 /** 389 * Result for IActivityManaqer.broadcastIntent: success! 390 * @hide 391 */ 392 public static final int BROADCAST_SUCCESS = 0; 393 394 /** 395 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 396 * a sticky intent without appropriate permission. 397 * @hide 398 */ 399 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 400 401 /** 402 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 403 * to a stopped user. Fail. 404 * @hide 405 */ 406 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 407 408 /** 409 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 410 * for a sendBroadcast operation. 411 * @hide 412 */ 413 public static final int INTENT_SENDER_BROADCAST = 1; 414 415 /** 416 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 417 * for a startActivity operation. 418 * @hide 419 */ 420 public static final int INTENT_SENDER_ACTIVITY = 2; 421 422 /** 423 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 424 * for an activity result operation. 425 * @hide 426 */ 427 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 428 429 /** 430 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 431 * for a startService operation. 432 * @hide 433 */ 434 public static final int INTENT_SENDER_SERVICE = 4; 435 436 /** 437 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 438 * for a startForegroundService operation. 439 * @hide 440 */ 441 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 442 443 /** @hide User operation call: success! */ 444 public static final int USER_OP_SUCCESS = 0; 445 446 /** @hide User operation call: given user id is not known. */ 447 public static final int USER_OP_UNKNOWN_USER = -1; 448 449 /** @hide User operation call: given user id is the current user, can't be stopped. */ 450 public static final int USER_OP_IS_CURRENT = -2; 451 452 /** @hide User operation call: system user can't be stopped. */ 453 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 454 455 /** @hide User operation call: one of related users cannot be stopped. */ 456 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 457 458 /** @hide Not a real process state. */ 459 public static final int PROCESS_STATE_UNKNOWN = -1; 460 461 /** @hide Process is a persistent system process. */ 462 public static final int PROCESS_STATE_PERSISTENT = 0; 463 464 /** @hide Process is a persistent system process and is doing UI. */ 465 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 466 467 /** @hide Process is hosting the current top activities. Note that this covers 468 * all activities that are visible to the user. */ 469 public static final int PROCESS_STATE_TOP = 2; 470 471 /** @hide Process is hosting a foreground service due to a system binding. */ 472 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 473 474 /** @hide Process is hosting a foreground service. */ 475 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 476 477 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 478 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 479 480 /** @hide Process is important to the user, and something they are aware of. */ 481 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 482 483 /** @hide Process is important to the user, but not something they are aware of. */ 484 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 485 486 /** @hide Process is in the background transient so we will try to keep running. */ 487 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 488 489 /** @hide Process is in the background running a backup/restore operation. */ 490 public static final int PROCESS_STATE_BACKUP = 9; 491 492 /** @hide Process is in the background, but it can't restore its state so we want 493 * to try to avoid killing it. */ 494 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 495 496 /** @hide Process is in the background running a service. Unlike oom_adj, this level 497 * is used for both the normal running in background state and the executing 498 * operations state. */ 499 public static final int PROCESS_STATE_SERVICE = 11; 500 501 /** @hide Process is in the background running a receiver. Note that from the 502 * perspective of oom_adj receivers run at a higher foreground level, but for our 503 * prioritization here that is not necessary and putting them below services means 504 * many fewer changes in some process states as they receive broadcasts. */ 505 public static final int PROCESS_STATE_RECEIVER = 12; 506 507 /** @hide Process is in the background but hosts the home activity. */ 508 public static final int PROCESS_STATE_HOME = 13; 509 510 /** @hide Process is in the background but hosts the last shown activity. */ 511 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 512 513 /** @hide Process is being cached for later use and contains activities. */ 514 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 515 516 /** @hide Process is being cached for later use and is a client of another cached 517 * process that contains activities. */ 518 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 519 520 /** @hide Process is being cached for later use and is empty. */ 521 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 522 523 /** @hide Process does not exist. */ 524 public static final int PROCESS_STATE_NONEXISTENT = 18; 525 526 /** @hide The lowest process state number */ 527 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 528 529 /** @hide The highest process state number */ 530 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 531 532 /** @hide Should this process state be considered a background state? */ 533 public static final boolean isProcStateBackground(int procState) { 534 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 535 } 536 537 /** @hide requestType for assist context: only basic information. */ 538 public static final int ASSIST_CONTEXT_BASIC = 0; 539 540 /** @hide requestType for assist context: generate full AssistStructure. */ 541 public static final int ASSIST_CONTEXT_FULL = 1; 542 543 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 544 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 545 546 /** @hide Flag for registerUidObserver: report changes in process state. */ 547 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 548 549 /** @hide Flag for registerUidObserver: report uid gone. */ 550 public static final int UID_OBSERVER_GONE = 1<<1; 551 552 /** @hide Flag for registerUidObserver: report uid has become idle. */ 553 public static final int UID_OBSERVER_IDLE = 1<<2; 554 555 /** @hide Flag for registerUidObserver: report uid has become active. */ 556 public static final int UID_OBSERVER_ACTIVE = 1<<3; 557 558 /** @hide Flag for registerUidObserver: report uid cached state has changed. */ 559 public static final int UID_OBSERVER_CACHED = 1<<4; 560 561 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 562 public static final int APP_START_MODE_NORMAL = 0; 563 564 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 565 public static final int APP_START_MODE_DELAYED = 1; 566 567 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 568 * rigid errors (throwing exception). */ 569 public static final int APP_START_MODE_DELAYED_RIGID = 2; 570 571 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 572 * launches; this is the mode for ephemeral apps. */ 573 public static final int APP_START_MODE_DISABLED = 3; 574 575 /** 576 * Lock task mode is not active. 577 */ 578 public static final int LOCK_TASK_MODE_NONE = 0; 579 580 /** 581 * Full lock task mode is active. 582 */ 583 public static final int LOCK_TASK_MODE_LOCKED = 1; 584 585 /** 586 * App pinning mode is active. 587 */ 588 public static final int LOCK_TASK_MODE_PINNED = 2; 589 590 Point mAppTaskThumbnailSize; 591 592 /*package*/ ActivityManager(Context context, Handler handler) { 593 mContext = context; 594 } 595 596 /** 597 * Returns whether the launch was successful. 598 * @hide 599 */ 600 public static final boolean isStartResultSuccessful(int result) { 601 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 602 } 603 604 /** 605 * Returns whether the launch result was a fatal error. 606 * @hide 607 */ 608 public static final boolean isStartResultFatalError(int result) { 609 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 610 } 611 612 /** 613 * Screen compatibility mode: the application most always run in 614 * compatibility mode. 615 * @hide 616 */ 617 public static final int COMPAT_MODE_ALWAYS = -1; 618 619 /** 620 * Screen compatibility mode: the application can never run in 621 * compatibility mode. 622 * @hide 623 */ 624 public static final int COMPAT_MODE_NEVER = -2; 625 626 /** 627 * Screen compatibility mode: unknown. 628 * @hide 629 */ 630 public static final int COMPAT_MODE_UNKNOWN = -3; 631 632 /** 633 * Screen compatibility mode: the application currently has compatibility 634 * mode disabled. 635 * @hide 636 */ 637 public static final int COMPAT_MODE_DISABLED = 0; 638 639 /** 640 * Screen compatibility mode: the application currently has compatibility 641 * mode enabled. 642 * @hide 643 */ 644 public static final int COMPAT_MODE_ENABLED = 1; 645 646 /** 647 * Screen compatibility mode: request to toggle the application's 648 * compatibility mode. 649 * @hide 650 */ 651 public static final int COMPAT_MODE_TOGGLE = 2; 652 653 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 654 SystemProperties.getBoolean("debug.force_low_ram", false); 655 656 /** @hide */ 657 @TestApi 658 public static class StackId { 659 660 private StackId() { 661 } 662 663 /** Invalid stack ID. */ 664 public static final int INVALID_STACK_ID = -1; 665 666 } 667 668 /** 669 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 670 * specifies the position of the created docked stack at the top half of the screen if 671 * in portrait mode or at the left half of the screen if in landscape mode. 672 * @hide 673 */ 674 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 675 676 /** 677 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 678 * specifies the position of the created docked stack at the bottom half of the screen if 679 * in portrait mode or at the right half of the screen if in landscape mode. 680 * @hide 681 */ 682 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 683 684 /** 685 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 686 * that the resize doesn't need to preserve the window, and can be skipped if bounds 687 * is unchanged. This mode is used by window manager in most cases. 688 * @hide 689 */ 690 public static final int RESIZE_MODE_SYSTEM = 0; 691 692 /** 693 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 694 * that the resize should preserve the window if possible. 695 * @hide 696 */ 697 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 698 699 /** 700 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 701 * that the resize should be performed even if the bounds appears unchanged. 702 * @hide 703 */ 704 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 705 706 /** 707 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 708 * manager during a screen rotation. 709 * @hide 710 */ 711 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 712 713 /** 714 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 715 * resize is due to a drag action. 716 * @hide 717 */ 718 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 719 720 /** 721 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 722 * that the resize should preserve the window if possible, and should not be skipped 723 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 724 * is ending. 725 * @hide 726 */ 727 public static final int RESIZE_MODE_USER_FORCED = 728 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 729 730 /** @hide */ 731 public int getFrontActivityScreenCompatMode() { 732 try { 733 return getService().getFrontActivityScreenCompatMode(); 734 } catch (RemoteException e) { 735 throw e.rethrowFromSystemServer(); 736 } 737 } 738 739 /** @hide */ 740 public void setFrontActivityScreenCompatMode(int mode) { 741 try { 742 getService().setFrontActivityScreenCompatMode(mode); 743 } catch (RemoteException e) { 744 throw e.rethrowFromSystemServer(); 745 } 746 } 747 748 /** @hide */ 749 public int getPackageScreenCompatMode(String packageName) { 750 try { 751 return getService().getPackageScreenCompatMode(packageName); 752 } catch (RemoteException e) { 753 throw e.rethrowFromSystemServer(); 754 } 755 } 756 757 /** @hide */ 758 public void setPackageScreenCompatMode(String packageName, int mode) { 759 try { 760 getService().setPackageScreenCompatMode(packageName, mode); 761 } catch (RemoteException e) { 762 throw e.rethrowFromSystemServer(); 763 } 764 } 765 766 /** @hide */ 767 public boolean getPackageAskScreenCompat(String packageName) { 768 try { 769 return getService().getPackageAskScreenCompat(packageName); 770 } catch (RemoteException e) { 771 throw e.rethrowFromSystemServer(); 772 } 773 } 774 775 /** @hide */ 776 public void setPackageAskScreenCompat(String packageName, boolean ask) { 777 try { 778 getService().setPackageAskScreenCompat(packageName, ask); 779 } catch (RemoteException e) { 780 throw e.rethrowFromSystemServer(); 781 } 782 } 783 784 /** 785 * Return the approximate per-application memory class of the current 786 * device. This gives you an idea of how hard a memory limit you should 787 * impose on your application to let the overall system work best. The 788 * returned value is in megabytes; the baseline Android memory class is 789 * 16 (which happens to be the Java heap limit of those devices); some 790 * device with more memory may return 24 or even higher numbers. 791 */ 792 public int getMemoryClass() { 793 return staticGetMemoryClass(); 794 } 795 796 /** @hide */ 797 static public int staticGetMemoryClass() { 798 // Really brain dead right now -- just take this from the configured 799 // vm heap size, and assume it is in megabytes and thus ends with "m". 800 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 801 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 802 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 803 } 804 return staticGetLargeMemoryClass(); 805 } 806 807 /** 808 * Return the approximate per-application memory class of the current 809 * device when an application is running with a large heap. This is the 810 * space available for memory-intensive applications; most applications 811 * should not need this amount of memory, and should instead stay with the 812 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 813 * This may be the same size as {@link #getMemoryClass()} on memory 814 * constrained devices, or it may be significantly larger on devices with 815 * a large amount of available RAM. 816 * 817 * <p>The is the size of the application's Dalvik heap if it has 818 * specified <code>android:largeHeap="true"</code> in its manifest. 819 */ 820 public int getLargeMemoryClass() { 821 return staticGetLargeMemoryClass(); 822 } 823 824 /** @hide */ 825 static public int staticGetLargeMemoryClass() { 826 // Really brain dead right now -- just take this from the configured 827 // vm heap size, and assume it is in megabytes and thus ends with "m". 828 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 829 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 830 } 831 832 /** 833 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 834 * is ultimately up to the device configuration, but currently it generally means 835 * something in the class of a 512MB device with about a 800x480 or less screen. 836 * This is mostly intended to be used by apps to determine whether they should turn 837 * off certain features that require more RAM. 838 */ 839 public boolean isLowRamDevice() { 840 return isLowRamDeviceStatic(); 841 } 842 843 /** @hide */ 844 public static boolean isLowRamDeviceStatic() { 845 return RoSystemProperties.CONFIG_LOW_RAM || 846 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 847 } 848 849 /** 850 * Returns true if this is a small battery device. Exactly whether a device is considered to be 851 * small battery is ultimately up to the device configuration, but currently it generally means 852 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 853 * to determine whether certain features should be altered to account for a drastically smaller 854 * battery. 855 * @hide 856 */ 857 public static boolean isSmallBatteryDevice() { 858 return RoSystemProperties.CONFIG_SMALL_BATTERY; 859 } 860 861 /** 862 * Used by persistent processes to determine if they are running on a 863 * higher-end device so should be okay using hardware drawing acceleration 864 * (which tends to consume a lot more RAM). 865 * @hide 866 */ 867 static public boolean isHighEndGfx() { 868 return !isLowRamDeviceStatic() && 869 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 870 } 871 872 /** 873 * Return the maximum number of recents entries that we will maintain and show. 874 * @hide 875 */ 876 static public int getMaxRecentTasksStatic() { 877 if (gMaxRecentTasks < 0) { 878 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 879 } 880 return gMaxRecentTasks; 881 } 882 883 /** 884 * Return the default limit on the number of recents that an app can make. 885 * @hide 886 */ 887 static public int getDefaultAppRecentsLimitStatic() { 888 return getMaxRecentTasksStatic() / 6; 889 } 890 891 /** 892 * Return the maximum limit on the number of recents that an app can make. 893 * @hide 894 */ 895 static public int getMaxAppRecentsLimitStatic() { 896 return getMaxRecentTasksStatic() / 2; 897 } 898 899 /** 900 * Returns true if the system supports at least one form of multi-window. 901 * E.g. freeform, split-screen, picture-in-picture. 902 * @hide 903 */ 904 @TestApi 905 static public boolean supportsMultiWindow(Context context) { 906 // On watches, multi-window is used to present essential system UI, and thus it must be 907 // supported regardless of device memory characteristics. 908 boolean isWatch = context.getPackageManager().hasSystemFeature( 909 PackageManager.FEATURE_WATCH); 910 return (!isLowRamDeviceStatic() || isWatch) 911 && Resources.getSystem().getBoolean( 912 com.android.internal.R.bool.config_supportsMultiWindow); 913 } 914 915 /** 916 * Returns true if the system supports split screen multi-window. 917 * @hide 918 */ 919 @TestApi 920 static public boolean supportsSplitScreenMultiWindow(Context context) { 921 return supportsMultiWindow(context) 922 && Resources.getSystem().getBoolean( 923 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 924 } 925 926 /** @removed */ 927 @Deprecated 928 public static int getMaxNumPictureInPictureActions() { 929 return 3; 930 } 931 932 /** 933 * Information you can set and retrieve about the current activity within the recent task list. 934 */ 935 public static class TaskDescription implements Parcelable { 936 /** @hide */ 937 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 938 private static final String ATTR_TASKDESCRIPTIONLABEL = 939 ATTR_TASKDESCRIPTION_PREFIX + "label"; 940 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 941 ATTR_TASKDESCRIPTION_PREFIX + "color"; 942 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 943 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 944 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 945 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 946 947 private String mLabel; 948 private Bitmap mIcon; 949 private String mIconFilename; 950 private int mColorPrimary; 951 private int mColorBackground; 952 private int mStatusBarColor; 953 private int mNavigationBarColor; 954 955 /** 956 * Creates the TaskDescription to the specified values. 957 * 958 * @param label A label and description of the current state of this task. 959 * @param icon An icon that represents the current state of this task. 960 * @param colorPrimary A color to override the theme's primary color. This color must be 961 * opaque. 962 */ 963 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 964 this(label, icon, null, colorPrimary, 0, 0, 0); 965 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 966 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 967 } 968 } 969 970 /** 971 * Creates the TaskDescription to the specified values. 972 * 973 * @param label A label and description of the current state of this activity. 974 * @param icon An icon that represents the current state of this activity. 975 */ 976 public TaskDescription(String label, Bitmap icon) { 977 this(label, icon, null, 0, 0, 0, 0); 978 } 979 980 /** 981 * Creates the TaskDescription to the specified values. 982 * 983 * @param label A label and description of the current state of this activity. 984 */ 985 public TaskDescription(String label) { 986 this(label, null, null, 0, 0, 0, 0); 987 } 988 989 /** 990 * Creates an empty TaskDescription. 991 */ 992 public TaskDescription() { 993 this(null, null, null, 0, 0, 0, 0); 994 } 995 996 /** @hide */ 997 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 998 int colorBackground, int statusBarColor, int navigationBarColor) { 999 mLabel = label; 1000 mIcon = icon; 1001 mIconFilename = iconFilename; 1002 mColorPrimary = colorPrimary; 1003 mColorBackground = colorBackground; 1004 mStatusBarColor = statusBarColor; 1005 mNavigationBarColor = navigationBarColor; 1006 } 1007 1008 /** 1009 * Creates a copy of another TaskDescription. 1010 */ 1011 public TaskDescription(TaskDescription td) { 1012 copyFrom(td); 1013 } 1014 1015 /** 1016 * Copies this the values from another TaskDescription. 1017 * @hide 1018 */ 1019 public void copyFrom(TaskDescription other) { 1020 mLabel = other.mLabel; 1021 mIcon = other.mIcon; 1022 mIconFilename = other.mIconFilename; 1023 mColorPrimary = other.mColorPrimary; 1024 mColorBackground = other.mColorBackground; 1025 mStatusBarColor = other.mStatusBarColor; 1026 mNavigationBarColor = other.mNavigationBarColor; 1027 } 1028 1029 /** 1030 * Copies this the values from another TaskDescription, but preserves the hidden fields 1031 * if they weren't set on {@code other} 1032 * @hide 1033 */ 1034 public void copyFromPreserveHiddenFields(TaskDescription other) { 1035 mLabel = other.mLabel; 1036 mIcon = other.mIcon; 1037 mIconFilename = other.mIconFilename; 1038 mColorPrimary = other.mColorPrimary; 1039 if (other.mColorBackground != 0) { 1040 mColorBackground = other.mColorBackground; 1041 } 1042 if (other.mStatusBarColor != 0) { 1043 mStatusBarColor = other.mStatusBarColor; 1044 } 1045 if (other.mNavigationBarColor != 0) { 1046 mNavigationBarColor = other.mNavigationBarColor; 1047 } 1048 } 1049 1050 private TaskDescription(Parcel source) { 1051 readFromParcel(source); 1052 } 1053 1054 /** 1055 * Sets the label for this task description. 1056 * @hide 1057 */ 1058 public void setLabel(String label) { 1059 mLabel = label; 1060 } 1061 1062 /** 1063 * Sets the primary color for this task description. 1064 * @hide 1065 */ 1066 public void setPrimaryColor(int primaryColor) { 1067 // Ensure that the given color is valid 1068 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1069 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1070 } 1071 mColorPrimary = primaryColor; 1072 } 1073 1074 /** 1075 * Sets the background color for this task description. 1076 * @hide 1077 */ 1078 public void setBackgroundColor(int backgroundColor) { 1079 // Ensure that the given color is valid 1080 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1081 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1082 } 1083 mColorBackground = backgroundColor; 1084 } 1085 1086 /** 1087 * @hide 1088 */ 1089 public void setStatusBarColor(int statusBarColor) { 1090 mStatusBarColor = statusBarColor; 1091 } 1092 1093 /** 1094 * @hide 1095 */ 1096 public void setNavigationBarColor(int navigationBarColor) { 1097 mNavigationBarColor = navigationBarColor; 1098 } 1099 1100 /** 1101 * Sets the icon for this task description. 1102 * @hide 1103 */ 1104 public void setIcon(Bitmap icon) { 1105 mIcon = icon; 1106 } 1107 1108 /** 1109 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1110 * bitmap. 1111 * @hide 1112 */ 1113 public void setIconFilename(String iconFilename) { 1114 mIconFilename = iconFilename; 1115 mIcon = null; 1116 } 1117 1118 /** 1119 * @return The label and description of the current state of this task. 1120 */ 1121 public String getLabel() { 1122 return mLabel; 1123 } 1124 1125 /** 1126 * @return The icon that represents the current state of this task. 1127 */ 1128 public Bitmap getIcon() { 1129 if (mIcon != null) { 1130 return mIcon; 1131 } 1132 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1133 } 1134 1135 /** @hide */ 1136 public String getIconFilename() { 1137 return mIconFilename; 1138 } 1139 1140 /** @hide */ 1141 public Bitmap getInMemoryIcon() { 1142 return mIcon; 1143 } 1144 1145 /** @hide */ 1146 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1147 if (iconFilename != null) { 1148 try { 1149 return getService().getTaskDescriptionIcon(iconFilename, 1150 userId); 1151 } catch (RemoteException e) { 1152 throw e.rethrowFromSystemServer(); 1153 } 1154 } 1155 return null; 1156 } 1157 1158 /** 1159 * @return The color override on the theme's primary color. 1160 */ 1161 public int getPrimaryColor() { 1162 return mColorPrimary; 1163 } 1164 1165 /** 1166 * @return The background color. 1167 * @hide 1168 */ 1169 public int getBackgroundColor() { 1170 return mColorBackground; 1171 } 1172 1173 /** 1174 * @hide 1175 */ 1176 public int getStatusBarColor() { 1177 return mStatusBarColor; 1178 } 1179 1180 /** 1181 * @hide 1182 */ 1183 public int getNavigationBarColor() { 1184 return mNavigationBarColor; 1185 } 1186 1187 /** @hide */ 1188 public void saveToXml(XmlSerializer out) throws IOException { 1189 if (mLabel != null) { 1190 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1191 } 1192 if (mColorPrimary != 0) { 1193 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1194 Integer.toHexString(mColorPrimary)); 1195 } 1196 if (mColorBackground != 0) { 1197 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1198 Integer.toHexString(mColorBackground)); 1199 } 1200 if (mIconFilename != null) { 1201 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1202 } 1203 } 1204 1205 /** @hide */ 1206 public void restoreFromXml(String attrName, String attrValue) { 1207 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1208 setLabel(attrValue); 1209 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1210 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1211 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1212 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1213 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1214 setIconFilename(attrValue); 1215 } 1216 } 1217 1218 @Override 1219 public int describeContents() { 1220 return 0; 1221 } 1222 1223 @Override 1224 public void writeToParcel(Parcel dest, int flags) { 1225 if (mLabel == null) { 1226 dest.writeInt(0); 1227 } else { 1228 dest.writeInt(1); 1229 dest.writeString(mLabel); 1230 } 1231 if (mIcon == null) { 1232 dest.writeInt(0); 1233 } else { 1234 dest.writeInt(1); 1235 mIcon.writeToParcel(dest, 0); 1236 } 1237 dest.writeInt(mColorPrimary); 1238 dest.writeInt(mColorBackground); 1239 dest.writeInt(mStatusBarColor); 1240 dest.writeInt(mNavigationBarColor); 1241 if (mIconFilename == null) { 1242 dest.writeInt(0); 1243 } else { 1244 dest.writeInt(1); 1245 dest.writeString(mIconFilename); 1246 } 1247 } 1248 1249 public void readFromParcel(Parcel source) { 1250 mLabel = source.readInt() > 0 ? source.readString() : null; 1251 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1252 mColorPrimary = source.readInt(); 1253 mColorBackground = source.readInt(); 1254 mStatusBarColor = source.readInt(); 1255 mNavigationBarColor = source.readInt(); 1256 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1257 } 1258 1259 public static final Creator<TaskDescription> CREATOR 1260 = new Creator<TaskDescription>() { 1261 public TaskDescription createFromParcel(Parcel source) { 1262 return new TaskDescription(source); 1263 } 1264 public TaskDescription[] newArray(int size) { 1265 return new TaskDescription[size]; 1266 } 1267 }; 1268 1269 @Override 1270 public String toString() { 1271 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1272 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1273 " colorBackground: " + mColorBackground + 1274 " statusBarColor: " + mColorBackground + 1275 " navigationBarColor: " + mNavigationBarColor; 1276 } 1277 } 1278 1279 /** 1280 * Information you can retrieve about tasks that the user has most recently 1281 * started or visited. 1282 */ 1283 public static class RecentTaskInfo implements Parcelable { 1284 /** 1285 * If this task is currently running, this is the identifier for it. 1286 * If it is not running, this will be -1. 1287 */ 1288 public int id; 1289 1290 /** 1291 * The true identifier of this task, valid even if it is not running. 1292 */ 1293 public int persistentId; 1294 1295 /** 1296 * The original Intent used to launch the task. You can use this 1297 * Intent to re-launch the task (if it is no longer running) or bring 1298 * the current task to the front. 1299 */ 1300 public Intent baseIntent; 1301 1302 /** 1303 * If this task was started from an alias, this is the actual 1304 * activity component that was initially started; the component of 1305 * the baseIntent in this case is the name of the actual activity 1306 * implementation that the alias referred to. Otherwise, this is null. 1307 */ 1308 public ComponentName origActivity; 1309 1310 /** 1311 * The actual activity component that started the task. 1312 * @hide 1313 */ 1314 @Nullable 1315 public ComponentName realActivity; 1316 1317 /** 1318 * Description of the task's last state. 1319 */ 1320 public CharSequence description; 1321 1322 /** 1323 * The id of the ActivityStack this Task was on most recently. 1324 * @hide 1325 */ 1326 public int stackId; 1327 1328 /** 1329 * The id of the user the task was running as. 1330 * @hide 1331 */ 1332 public int userId; 1333 1334 /** 1335 * The first time this task was active. 1336 * @hide 1337 */ 1338 public long firstActiveTime; 1339 1340 /** 1341 * The last time this task was active. 1342 * @hide 1343 */ 1344 public long lastActiveTime; 1345 1346 /** 1347 * The recent activity values for the highest activity in the stack to have set the values. 1348 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1349 */ 1350 public TaskDescription taskDescription; 1351 1352 /** 1353 * Task affiliation for grouping with other tasks. 1354 */ 1355 public int affiliatedTaskId; 1356 1357 /** 1358 * Task affiliation color of the source task with the affiliated task id. 1359 * 1360 * @hide 1361 */ 1362 public int affiliatedTaskColor; 1363 1364 /** 1365 * The component launched as the first activity in the task. 1366 * This can be considered the "application" of this task. 1367 */ 1368 public ComponentName baseActivity; 1369 1370 /** 1371 * The activity component at the top of the history stack of the task. 1372 * This is what the user is currently doing. 1373 */ 1374 public ComponentName topActivity; 1375 1376 /** 1377 * Number of activities in this task. 1378 */ 1379 public int numActivities; 1380 1381 /** 1382 * The bounds of the task. 1383 * @hide 1384 */ 1385 public Rect bounds; 1386 1387 /** 1388 * True if the task can go in the docked stack. 1389 * @hide 1390 */ 1391 public boolean supportsSplitScreenMultiWindow; 1392 1393 /** 1394 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1395 * @hide 1396 */ 1397 public int resizeMode; 1398 1399 /** 1400 * The current configuration this task is in. 1401 * @hide 1402 */ 1403 final public Configuration configuration = new Configuration(); 1404 1405 public RecentTaskInfo() { 1406 } 1407 1408 @Override 1409 public int describeContents() { 1410 return 0; 1411 } 1412 1413 @Override 1414 public void writeToParcel(Parcel dest, int flags) { 1415 dest.writeInt(id); 1416 dest.writeInt(persistentId); 1417 if (baseIntent != null) { 1418 dest.writeInt(1); 1419 baseIntent.writeToParcel(dest, 0); 1420 } else { 1421 dest.writeInt(0); 1422 } 1423 ComponentName.writeToParcel(origActivity, dest); 1424 ComponentName.writeToParcel(realActivity, dest); 1425 TextUtils.writeToParcel(description, dest, 1426 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1427 if (taskDescription != null) { 1428 dest.writeInt(1); 1429 taskDescription.writeToParcel(dest, 0); 1430 } else { 1431 dest.writeInt(0); 1432 } 1433 dest.writeInt(stackId); 1434 dest.writeInt(userId); 1435 dest.writeLong(lastActiveTime); 1436 dest.writeInt(affiliatedTaskId); 1437 dest.writeInt(affiliatedTaskColor); 1438 ComponentName.writeToParcel(baseActivity, dest); 1439 ComponentName.writeToParcel(topActivity, dest); 1440 dest.writeInt(numActivities); 1441 if (bounds != null) { 1442 dest.writeInt(1); 1443 bounds.writeToParcel(dest, 0); 1444 } else { 1445 dest.writeInt(0); 1446 } 1447 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1448 dest.writeInt(resizeMode); 1449 configuration.writeToParcel(dest, flags); 1450 } 1451 1452 public void readFromParcel(Parcel source) { 1453 id = source.readInt(); 1454 persistentId = source.readInt(); 1455 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1456 origActivity = ComponentName.readFromParcel(source); 1457 realActivity = ComponentName.readFromParcel(source); 1458 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1459 taskDescription = source.readInt() > 0 ? 1460 TaskDescription.CREATOR.createFromParcel(source) : null; 1461 stackId = source.readInt(); 1462 userId = source.readInt(); 1463 lastActiveTime = source.readLong(); 1464 affiliatedTaskId = source.readInt(); 1465 affiliatedTaskColor = source.readInt(); 1466 baseActivity = ComponentName.readFromParcel(source); 1467 topActivity = ComponentName.readFromParcel(source); 1468 numActivities = source.readInt(); 1469 bounds = source.readInt() > 0 ? 1470 Rect.CREATOR.createFromParcel(source) : null; 1471 supportsSplitScreenMultiWindow = source.readInt() == 1; 1472 resizeMode = source.readInt(); 1473 configuration.readFromParcel(source); 1474 } 1475 1476 public static final Creator<RecentTaskInfo> CREATOR 1477 = new Creator<RecentTaskInfo>() { 1478 public RecentTaskInfo createFromParcel(Parcel source) { 1479 return new RecentTaskInfo(source); 1480 } 1481 public RecentTaskInfo[] newArray(int size) { 1482 return new RecentTaskInfo[size]; 1483 } 1484 }; 1485 1486 private RecentTaskInfo(Parcel source) { 1487 readFromParcel(source); 1488 } 1489 } 1490 1491 /** 1492 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1493 * that have set their 1494 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1495 */ 1496 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1497 1498 /** 1499 * Provides a list that does not contain any 1500 * recent tasks that currently are not available to the user. 1501 */ 1502 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1503 1504 /** 1505 * Provides a list that contains recent tasks for all 1506 * profiles of a user. 1507 * @hide 1508 */ 1509 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1510 1511 /** 1512 * Ignores all tasks that are on the home stack. 1513 * @hide 1514 */ 1515 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1516 1517 /** 1518 * Ignores the top task in the docked stack. 1519 * @hide 1520 */ 1521 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1522 1523 /** 1524 * Ignores all tasks that are on the pinned stack. 1525 * @hide 1526 */ 1527 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1528 1529 /** 1530 * <p></p>Return a list of the tasks that the user has recently launched, with 1531 * the most recent being first and older ones after in order. 1532 * 1533 * <p><b>Note: this method is only intended for debugging and presenting 1534 * task management user interfaces</b>. This should never be used for 1535 * core logic in an application, such as deciding between different 1536 * behaviors based on the information found here. Such uses are 1537 * <em>not</em> supported, and will likely break in the future. For 1538 * example, if multiple applications can be actively running at the 1539 * same time, assumptions made about the meaning of the data here for 1540 * purposes of control flow will be incorrect.</p> 1541 * 1542 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1543 * no longer available to third party applications: the introduction of 1544 * document-centric recents means 1545 * it can leak personal information to the caller. For backwards compatibility, 1546 * it will still return a small subset of its data: at least the caller's 1547 * own tasks (though see {@link #getAppTasks()} for the correct supported 1548 * way to retrieve that information), and possibly some other tasks 1549 * such as home that are known to not be sensitive. 1550 * 1551 * @param maxNum The maximum number of entries to return in the list. The 1552 * actual number returned may be smaller, depending on how many tasks the 1553 * user has started and the maximum number the system can remember. 1554 * @param flags Information about what to return. May be any combination 1555 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1556 * 1557 * @return Returns a list of RecentTaskInfo records describing each of 1558 * the recent tasks. 1559 */ 1560 @Deprecated 1561 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1562 throws SecurityException { 1563 try { 1564 return getService().getRecentTasks(maxNum, 1565 flags, UserHandle.myUserId()).getList(); 1566 } catch (RemoteException e) { 1567 throw e.rethrowFromSystemServer(); 1568 } 1569 } 1570 1571 /** 1572 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1573 * specific user. It requires holding 1574 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1575 * @param maxNum The maximum number of entries to return in the list. The 1576 * actual number returned may be smaller, depending on how many tasks the 1577 * user has started and the maximum number the system can remember. 1578 * @param flags Information about what to return. May be any combination 1579 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1580 * 1581 * @return Returns a list of RecentTaskInfo records describing each of 1582 * the recent tasks. Most recently activated tasks go first. 1583 * 1584 * @hide 1585 */ 1586 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1587 throws SecurityException { 1588 try { 1589 return getService().getRecentTasks(maxNum, 1590 flags, userId).getList(); 1591 } catch (RemoteException e) { 1592 throw e.rethrowFromSystemServer(); 1593 } 1594 } 1595 1596 /** 1597 * Information you can retrieve about a particular task that is currently 1598 * "running" in the system. Note that a running task does not mean the 1599 * given task actually has a process it is actively running in; it simply 1600 * means that the user has gone to it and never closed it, but currently 1601 * the system may have killed its process and is only holding on to its 1602 * last state in order to restart it when the user returns. 1603 */ 1604 public static class RunningTaskInfo implements Parcelable { 1605 /** 1606 * A unique identifier for this task. 1607 */ 1608 public int id; 1609 1610 /** 1611 * The stack that currently contains this task. 1612 * @hide 1613 */ 1614 public int stackId; 1615 1616 /** 1617 * The component launched as the first activity in the task. This can 1618 * be considered the "application" of this task. 1619 */ 1620 public ComponentName baseActivity; 1621 1622 /** 1623 * The activity component at the top of the history stack of the task. 1624 * This is what the user is currently doing. 1625 */ 1626 public ComponentName topActivity; 1627 1628 /** 1629 * Thumbnail representation of the task's current state. Currently 1630 * always null. 1631 */ 1632 public Bitmap thumbnail; 1633 1634 /** 1635 * Description of the task's current state. 1636 */ 1637 public CharSequence description; 1638 1639 /** 1640 * Number of activities in this task. 1641 */ 1642 public int numActivities; 1643 1644 /** 1645 * Number of activities that are currently running (not stopped 1646 * and persisted) in this task. 1647 */ 1648 public int numRunning; 1649 1650 /** 1651 * Last time task was run. For sorting. 1652 * @hide 1653 */ 1654 public long lastActiveTime; 1655 1656 /** 1657 * True if the task can go in the docked stack. 1658 * @hide 1659 */ 1660 public boolean supportsSplitScreenMultiWindow; 1661 1662 /** 1663 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1664 * @hide 1665 */ 1666 public int resizeMode; 1667 1668 /** 1669 * The full configuration the task is currently running in. 1670 * @hide 1671 */ 1672 final public Configuration configuration = new Configuration(); 1673 1674 public RunningTaskInfo() { 1675 } 1676 1677 public int describeContents() { 1678 return 0; 1679 } 1680 1681 public void writeToParcel(Parcel dest, int flags) { 1682 dest.writeInt(id); 1683 dest.writeInt(stackId); 1684 ComponentName.writeToParcel(baseActivity, dest); 1685 ComponentName.writeToParcel(topActivity, dest); 1686 if (thumbnail != null) { 1687 dest.writeInt(1); 1688 thumbnail.writeToParcel(dest, 0); 1689 } else { 1690 dest.writeInt(0); 1691 } 1692 TextUtils.writeToParcel(description, dest, 1693 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1694 dest.writeInt(numActivities); 1695 dest.writeInt(numRunning); 1696 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1697 dest.writeInt(resizeMode); 1698 configuration.writeToParcel(dest, flags); 1699 } 1700 1701 public void readFromParcel(Parcel source) { 1702 id = source.readInt(); 1703 stackId = source.readInt(); 1704 baseActivity = ComponentName.readFromParcel(source); 1705 topActivity = ComponentName.readFromParcel(source); 1706 if (source.readInt() != 0) { 1707 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1708 } else { 1709 thumbnail = null; 1710 } 1711 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1712 numActivities = source.readInt(); 1713 numRunning = source.readInt(); 1714 supportsSplitScreenMultiWindow = source.readInt() != 0; 1715 resizeMode = source.readInt(); 1716 configuration.readFromParcel(source); 1717 } 1718 1719 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1720 public RunningTaskInfo createFromParcel(Parcel source) { 1721 return new RunningTaskInfo(source); 1722 } 1723 public RunningTaskInfo[] newArray(int size) { 1724 return new RunningTaskInfo[size]; 1725 } 1726 }; 1727 1728 private RunningTaskInfo(Parcel source) { 1729 readFromParcel(source); 1730 } 1731 } 1732 1733 /** 1734 * Get the list of tasks associated with the calling application. 1735 * 1736 * @return The list of tasks associated with the application making this call. 1737 * @throws SecurityException 1738 */ 1739 public List<ActivityManager.AppTask> getAppTasks() { 1740 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1741 List<IBinder> appTasks; 1742 try { 1743 appTasks = getService().getAppTasks(mContext.getPackageName()); 1744 } catch (RemoteException e) { 1745 throw e.rethrowFromSystemServer(); 1746 } 1747 int numAppTasks = appTasks.size(); 1748 for (int i = 0; i < numAppTasks; i++) { 1749 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1750 } 1751 return tasks; 1752 } 1753 1754 /** 1755 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1756 * with {@link #addAppTask}. 1757 */ 1758 public Size getAppTaskThumbnailSize() { 1759 synchronized (this) { 1760 ensureAppTaskThumbnailSizeLocked(); 1761 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1762 } 1763 } 1764 1765 private void ensureAppTaskThumbnailSizeLocked() { 1766 if (mAppTaskThumbnailSize == null) { 1767 try { 1768 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1769 } catch (RemoteException e) { 1770 throw e.rethrowFromSystemServer(); 1771 } 1772 } 1773 } 1774 1775 /** 1776 * Add a new {@link AppTask} for the calling application. This will create a new 1777 * recents entry that is added to the <b>end</b> of all existing recents. 1778 * 1779 * @param activity The activity that is adding the entry. This is used to help determine 1780 * the context that the new recents entry will be in. 1781 * @param intent The Intent that describes the recents entry. This is the same Intent that 1782 * you would have used to launch the activity for it. In generally you will want to set 1783 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1784 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1785 * entry will exist without an activity, so it doesn't make sense to not retain it when 1786 * its activity disappears. The given Intent here also must have an explicit ComponentName 1787 * set on it. 1788 * @param description Optional additional description information. 1789 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1790 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1791 * recreated in your process, probably in a way you don't like, before the recents entry 1792 * is added. 1793 * 1794 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1795 * most likely cause of failure is that there is no more room for more tasks for your app. 1796 */ 1797 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1798 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1799 Point size; 1800 synchronized (this) { 1801 ensureAppTaskThumbnailSizeLocked(); 1802 size = mAppTaskThumbnailSize; 1803 } 1804 final int tw = thumbnail.getWidth(); 1805 final int th = thumbnail.getHeight(); 1806 if (tw != size.x || th != size.y) { 1807 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1808 1809 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1810 float scale; 1811 float dx = 0, dy = 0; 1812 if (tw * size.x > size.y * th) { 1813 scale = (float) size.x / (float) th; 1814 dx = (size.y - tw * scale) * 0.5f; 1815 } else { 1816 scale = (float) size.y / (float) tw; 1817 dy = (size.x - th * scale) * 0.5f; 1818 } 1819 Matrix matrix = new Matrix(); 1820 matrix.setScale(scale, scale); 1821 matrix.postTranslate((int) (dx + 0.5f), 0); 1822 1823 Canvas canvas = new Canvas(bm); 1824 canvas.drawBitmap(thumbnail, matrix, null); 1825 canvas.setBitmap(null); 1826 1827 thumbnail = bm; 1828 } 1829 if (description == null) { 1830 description = new TaskDescription(); 1831 } 1832 try { 1833 return getService().addAppTask(activity.getActivityToken(), 1834 intent, description, thumbnail); 1835 } catch (RemoteException e) { 1836 throw e.rethrowFromSystemServer(); 1837 } 1838 } 1839 1840 /** 1841 * Return a list of the tasks that are currently running, with 1842 * the most recent being first and older ones after in order. Note that 1843 * "running" does not mean any of the task's code is currently loaded or 1844 * activity -- the task may have been frozen by the system, so that it 1845 * can be restarted in its previous state when next brought to the 1846 * foreground. 1847 * 1848 * <p><b>Note: this method is only intended for debugging and presenting 1849 * task management user interfaces</b>. This should never be used for 1850 * core logic in an application, such as deciding between different 1851 * behaviors based on the information found here. Such uses are 1852 * <em>not</em> supported, and will likely break in the future. For 1853 * example, if multiple applications can be actively running at the 1854 * same time, assumptions made about the meaning of the data here for 1855 * purposes of control flow will be incorrect.</p> 1856 * 1857 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1858 * is no longer available to third party 1859 * applications: the introduction of document-centric recents means 1860 * it can leak person information to the caller. For backwards compatibility, 1861 * it will still return a small subset of its data: at least the caller's 1862 * own tasks, and possibly some other tasks 1863 * such as home that are known to not be sensitive. 1864 * 1865 * @param maxNum The maximum number of entries to return in the list. The 1866 * actual number returned may be smaller, depending on how many tasks the 1867 * user has started. 1868 * 1869 * @return Returns a list of RunningTaskInfo records describing each of 1870 * the running tasks. 1871 */ 1872 @Deprecated 1873 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1874 throws SecurityException { 1875 try { 1876 return getService().getTasks(maxNum, 0); 1877 } catch (RemoteException e) { 1878 throw e.rethrowFromSystemServer(); 1879 } 1880 } 1881 1882 /** 1883 * Completely remove the given task. 1884 * 1885 * @param taskId Identifier of the task to be removed. 1886 * @return Returns true if the given task was found and removed. 1887 * 1888 * @hide 1889 */ 1890 public boolean removeTask(int taskId) throws SecurityException { 1891 try { 1892 return getService().removeTask(taskId); 1893 } catch (RemoteException e) { 1894 throw e.rethrowFromSystemServer(); 1895 } 1896 } 1897 1898 /** 1899 * Sets the windowing mode for a specific task. Only works on tasks of type 1900 * {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} 1901 * @param taskId The id of the task to set the windowing mode for. 1902 * @param windowingMode The windowing mode to set for the task. 1903 * @param toTop If the task should be moved to the top once the windowing mode changes. 1904 * @hide 1905 */ 1906 @TestApi 1907 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1908 public void setTaskWindowingMode(int taskId, int windowingMode, boolean toTop) 1909 throws SecurityException { 1910 try { 1911 getService().setTaskWindowingMode(taskId, windowingMode, toTop); 1912 } catch (RemoteException e) { 1913 throw e.rethrowFromSystemServer(); 1914 } 1915 } 1916 1917 /** 1918 * Resizes the input stack id to the given bounds. 1919 * @param stackId Id of the stack to resize. 1920 * @param bounds Bounds to resize the stack to or {@code null} for fullscreen. 1921 * @hide 1922 */ 1923 @TestApi 1924 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1925 public void resizeStack(int stackId, Rect bounds) throws SecurityException { 1926 try { 1927 getService().resizeStack(stackId, bounds, false /* allowResizeInDockedMode */, 1928 false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); 1929 } catch (RemoteException e) { 1930 throw e.rethrowFromSystemServer(); 1931 } 1932 } 1933 1934 /** 1935 * Removes stacks in the windowing modes from the system if they are of activity type 1936 * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED 1937 * 1938 * @hide 1939 */ 1940 @TestApi 1941 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1942 public void removeStacksInWindowingModes(int[] windowingModes) throws SecurityException { 1943 try { 1944 getService().removeStacksInWindowingModes(windowingModes); 1945 } catch (RemoteException e) { 1946 throw e.rethrowFromSystemServer(); 1947 } 1948 } 1949 1950 /** 1951 * Removes stack of the activity types from the system. 1952 * 1953 * @hide 1954 */ 1955 @TestApi 1956 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1957 public void removeStacksWithActivityTypes(int[] activityTypes) throws SecurityException { 1958 try { 1959 getService().removeStacksWithActivityTypes(activityTypes); 1960 } catch (RemoteException e) { 1961 throw e.rethrowFromSystemServer(); 1962 } 1963 } 1964 1965 /** 1966 * Represents a task snapshot. 1967 * @hide 1968 */ 1969 public static class TaskSnapshot implements Parcelable { 1970 1971 private final GraphicBuffer mSnapshot; 1972 private final int mOrientation; 1973 private final Rect mContentInsets; 1974 private final boolean mReducedResolution; 1975 private final float mScale; 1976 1977 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 1978 boolean reducedResolution, float scale) { 1979 mSnapshot = snapshot; 1980 mOrientation = orientation; 1981 mContentInsets = new Rect(contentInsets); 1982 mReducedResolution = reducedResolution; 1983 mScale = scale; 1984 } 1985 1986 private TaskSnapshot(Parcel source) { 1987 mSnapshot = source.readParcelable(null /* classLoader */); 1988 mOrientation = source.readInt(); 1989 mContentInsets = source.readParcelable(null /* classLoader */); 1990 mReducedResolution = source.readBoolean(); 1991 mScale = source.readFloat(); 1992 } 1993 1994 /** 1995 * @return The graphic buffer representing the screenshot. 1996 */ 1997 public GraphicBuffer getSnapshot() { 1998 return mSnapshot; 1999 } 2000 2001 /** 2002 * @return The screen orientation the screenshot was taken in. 2003 */ 2004 public int getOrientation() { 2005 return mOrientation; 2006 } 2007 2008 /** 2009 * @return The system/content insets on the snapshot. These can be clipped off in order to 2010 * remove any areas behind system bars in the snapshot. 2011 */ 2012 public Rect getContentInsets() { 2013 return mContentInsets; 2014 } 2015 2016 /** 2017 * @return Whether this snapshot is a down-sampled version of the full resolution. 2018 */ 2019 public boolean isReducedResolution() { 2020 return mReducedResolution; 2021 } 2022 2023 /** 2024 * @return The scale this snapshot was taken in. 2025 */ 2026 public float getScale() { 2027 return mScale; 2028 } 2029 2030 @Override 2031 public int describeContents() { 2032 return 0; 2033 } 2034 2035 @Override 2036 public void writeToParcel(Parcel dest, int flags) { 2037 dest.writeParcelable(mSnapshot, 0); 2038 dest.writeInt(mOrientation); 2039 dest.writeParcelable(mContentInsets, 0); 2040 dest.writeBoolean(mReducedResolution); 2041 dest.writeFloat(mScale); 2042 } 2043 2044 @Override 2045 public String toString() { 2046 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2047 + " mContentInsets=" + mContentInsets.toShortString() 2048 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2049 } 2050 2051 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2052 public TaskSnapshot createFromParcel(Parcel source) { 2053 return new TaskSnapshot(source); 2054 } 2055 public TaskSnapshot[] newArray(int size) { 2056 return new TaskSnapshot[size]; 2057 } 2058 }; 2059 } 2060 2061 /** @hide */ 2062 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2063 MOVE_TASK_WITH_HOME, 2064 MOVE_TASK_NO_USER_ACTION, 2065 }) 2066 @Retention(RetentionPolicy.SOURCE) 2067 public @interface MoveTaskFlags {} 2068 2069 /** 2070 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2071 * activity along with the task, so it is positioned immediately behind 2072 * the task. 2073 */ 2074 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2075 2076 /** 2077 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2078 * user-instigated action, so the current activity will not receive a 2079 * hint that the user is leaving. 2080 */ 2081 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2082 2083 /** 2084 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2085 * with a null options argument. 2086 * 2087 * @param taskId The identifier of the task to be moved, as found in 2088 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2089 * @param flags Additional operational flags. 2090 */ 2091 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2092 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2093 moveTaskToFront(taskId, flags, null); 2094 } 2095 2096 /** 2097 * Ask that the task associated with a given task ID be moved to the 2098 * front of the stack, so it is now visible to the user. 2099 * 2100 * @param taskId The identifier of the task to be moved, as found in 2101 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2102 * @param flags Additional operational flags. 2103 * @param options Additional options for the operation, either null or 2104 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2105 * Context.startActivity(Intent, Bundle)}. 2106 */ 2107 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2108 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2109 try { 2110 getService().moveTaskToFront(taskId, flags, options); 2111 } catch (RemoteException e) { 2112 throw e.rethrowFromSystemServer(); 2113 } 2114 } 2115 2116 /** 2117 * Information you can retrieve about a particular Service that is 2118 * currently running in the system. 2119 */ 2120 public static class RunningServiceInfo implements Parcelable { 2121 /** 2122 * The service component. 2123 */ 2124 public ComponentName service; 2125 2126 /** 2127 * If non-zero, this is the process the service is running in. 2128 */ 2129 public int pid; 2130 2131 /** 2132 * The UID that owns this service. 2133 */ 2134 public int uid; 2135 2136 /** 2137 * The name of the process this service runs in. 2138 */ 2139 public String process; 2140 2141 /** 2142 * Set to true if the service has asked to run as a foreground process. 2143 */ 2144 public boolean foreground; 2145 2146 /** 2147 * The time when the service was first made active, either by someone 2148 * starting or binding to it. This 2149 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2150 */ 2151 public long activeSince; 2152 2153 /** 2154 * Set to true if this service has been explicitly started. 2155 */ 2156 public boolean started; 2157 2158 /** 2159 * Number of clients connected to the service. 2160 */ 2161 public int clientCount; 2162 2163 /** 2164 * Number of times the service's process has crashed while the service 2165 * is running. 2166 */ 2167 public int crashCount; 2168 2169 /** 2170 * The time when there was last activity in the service (either 2171 * explicit requests to start it or clients binding to it). This 2172 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2173 */ 2174 public long lastActivityTime; 2175 2176 /** 2177 * If non-zero, this service is not currently running, but scheduled to 2178 * restart at the given time. 2179 */ 2180 public long restarting; 2181 2182 /** 2183 * Bit for {@link #flags}: set if this service has been 2184 * explicitly started. 2185 */ 2186 public static final int FLAG_STARTED = 1<<0; 2187 2188 /** 2189 * Bit for {@link #flags}: set if the service has asked to 2190 * run as a foreground process. 2191 */ 2192 public static final int FLAG_FOREGROUND = 1<<1; 2193 2194 /** 2195 * Bit for {@link #flags}: set if the service is running in a 2196 * core system process. 2197 */ 2198 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2199 2200 /** 2201 * Bit for {@link #flags}: set if the service is running in a 2202 * persistent process. 2203 */ 2204 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2205 2206 /** 2207 * Running flags. 2208 */ 2209 public int flags; 2210 2211 /** 2212 * For special services that are bound to by system code, this is 2213 * the package that holds the binding. 2214 */ 2215 public String clientPackage; 2216 2217 /** 2218 * For special services that are bound to by system code, this is 2219 * a string resource providing a user-visible label for who the 2220 * client is. 2221 */ 2222 public int clientLabel; 2223 2224 public RunningServiceInfo() { 2225 } 2226 2227 public int describeContents() { 2228 return 0; 2229 } 2230 2231 public void writeToParcel(Parcel dest, int flags) { 2232 ComponentName.writeToParcel(service, dest); 2233 dest.writeInt(pid); 2234 dest.writeInt(uid); 2235 dest.writeString(process); 2236 dest.writeInt(foreground ? 1 : 0); 2237 dest.writeLong(activeSince); 2238 dest.writeInt(started ? 1 : 0); 2239 dest.writeInt(clientCount); 2240 dest.writeInt(crashCount); 2241 dest.writeLong(lastActivityTime); 2242 dest.writeLong(restarting); 2243 dest.writeInt(this.flags); 2244 dest.writeString(clientPackage); 2245 dest.writeInt(clientLabel); 2246 } 2247 2248 public void readFromParcel(Parcel source) { 2249 service = ComponentName.readFromParcel(source); 2250 pid = source.readInt(); 2251 uid = source.readInt(); 2252 process = source.readString(); 2253 foreground = source.readInt() != 0; 2254 activeSince = source.readLong(); 2255 started = source.readInt() != 0; 2256 clientCount = source.readInt(); 2257 crashCount = source.readInt(); 2258 lastActivityTime = source.readLong(); 2259 restarting = source.readLong(); 2260 flags = source.readInt(); 2261 clientPackage = source.readString(); 2262 clientLabel = source.readInt(); 2263 } 2264 2265 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2266 public RunningServiceInfo createFromParcel(Parcel source) { 2267 return new RunningServiceInfo(source); 2268 } 2269 public RunningServiceInfo[] newArray(int size) { 2270 return new RunningServiceInfo[size]; 2271 } 2272 }; 2273 2274 private RunningServiceInfo(Parcel source) { 2275 readFromParcel(source); 2276 } 2277 } 2278 2279 /** 2280 * Return a list of the services that are currently running. 2281 * 2282 * <p><b>Note: this method is only intended for debugging or implementing 2283 * service management type user interfaces.</b></p> 2284 * 2285 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2286 * is no longer available to third party applications. For backwards compatibility, 2287 * it will still return the caller's own services. 2288 * 2289 * @param maxNum The maximum number of entries to return in the list. The 2290 * actual number returned may be smaller, depending on how many services 2291 * are running. 2292 * 2293 * @return Returns a list of RunningServiceInfo records describing each of 2294 * the running tasks. 2295 */ 2296 @Deprecated 2297 public List<RunningServiceInfo> getRunningServices(int maxNum) 2298 throws SecurityException { 2299 try { 2300 return getService() 2301 .getServices(maxNum, 0); 2302 } catch (RemoteException e) { 2303 throw e.rethrowFromSystemServer(); 2304 } 2305 } 2306 2307 /** 2308 * Returns a PendingIntent you can start to show a control panel for the 2309 * given running service. If the service does not have a control panel, 2310 * null is returned. 2311 */ 2312 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2313 throws SecurityException { 2314 try { 2315 return getService() 2316 .getRunningServiceControlPanel(service); 2317 } catch (RemoteException e) { 2318 throw e.rethrowFromSystemServer(); 2319 } 2320 } 2321 2322 /** 2323 * Information you can retrieve about the available memory through 2324 * {@link ActivityManager#getMemoryInfo}. 2325 */ 2326 public static class MemoryInfo implements Parcelable { 2327 /** 2328 * The available memory on the system. This number should not 2329 * be considered absolute: due to the nature of the kernel, a significant 2330 * portion of this memory is actually in use and needed for the overall 2331 * system to run well. 2332 */ 2333 public long availMem; 2334 2335 /** 2336 * The total memory accessible by the kernel. This is basically the 2337 * RAM size of the device, not including below-kernel fixed allocations 2338 * like DMA buffers, RAM for the baseband CPU, etc. 2339 */ 2340 public long totalMem; 2341 2342 /** 2343 * The threshold of {@link #availMem} at which we consider memory to be 2344 * low and start killing background services and other non-extraneous 2345 * processes. 2346 */ 2347 public long threshold; 2348 2349 /** 2350 * Set to true if the system considers itself to currently be in a low 2351 * memory situation. 2352 */ 2353 public boolean lowMemory; 2354 2355 /** @hide */ 2356 public long hiddenAppThreshold; 2357 /** @hide */ 2358 public long secondaryServerThreshold; 2359 /** @hide */ 2360 public long visibleAppThreshold; 2361 /** @hide */ 2362 public long foregroundAppThreshold; 2363 2364 public MemoryInfo() { 2365 } 2366 2367 public int describeContents() { 2368 return 0; 2369 } 2370 2371 public void writeToParcel(Parcel dest, int flags) { 2372 dest.writeLong(availMem); 2373 dest.writeLong(totalMem); 2374 dest.writeLong(threshold); 2375 dest.writeInt(lowMemory ? 1 : 0); 2376 dest.writeLong(hiddenAppThreshold); 2377 dest.writeLong(secondaryServerThreshold); 2378 dest.writeLong(visibleAppThreshold); 2379 dest.writeLong(foregroundAppThreshold); 2380 } 2381 2382 public void readFromParcel(Parcel source) { 2383 availMem = source.readLong(); 2384 totalMem = source.readLong(); 2385 threshold = source.readLong(); 2386 lowMemory = source.readInt() != 0; 2387 hiddenAppThreshold = source.readLong(); 2388 secondaryServerThreshold = source.readLong(); 2389 visibleAppThreshold = source.readLong(); 2390 foregroundAppThreshold = source.readLong(); 2391 } 2392 2393 public static final Creator<MemoryInfo> CREATOR 2394 = new Creator<MemoryInfo>() { 2395 public MemoryInfo createFromParcel(Parcel source) { 2396 return new MemoryInfo(source); 2397 } 2398 public MemoryInfo[] newArray(int size) { 2399 return new MemoryInfo[size]; 2400 } 2401 }; 2402 2403 private MemoryInfo(Parcel source) { 2404 readFromParcel(source); 2405 } 2406 } 2407 2408 /** 2409 * Return general information about the memory state of the system. This 2410 * can be used to help decide how to manage your own memory, though note 2411 * that polling is not recommended and 2412 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2413 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2414 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2415 * level of your process as needed, which gives a better hint for how to 2416 * manage its memory. 2417 */ 2418 public void getMemoryInfo(MemoryInfo outInfo) { 2419 try { 2420 getService().getMemoryInfo(outInfo); 2421 } catch (RemoteException e) { 2422 throw e.rethrowFromSystemServer(); 2423 } 2424 } 2425 2426 /** 2427 * Information you can retrieve about an ActivityStack in the system. 2428 * @hide 2429 */ 2430 public static class StackInfo implements Parcelable { 2431 public int stackId; 2432 public Rect bounds = new Rect(); 2433 public int[] taskIds; 2434 public String[] taskNames; 2435 public Rect[] taskBounds; 2436 public int[] taskUserIds; 2437 public ComponentName topActivity; 2438 public int displayId; 2439 public int userId; 2440 public boolean visible; 2441 // Index of the stack in the display's stack list, can be used for comparison of stack order 2442 public int position; 2443 /** 2444 * The full configuration the stack is currently running in. 2445 * @hide 2446 */ 2447 final public Configuration configuration = new Configuration(); 2448 2449 @Override 2450 public int describeContents() { 2451 return 0; 2452 } 2453 2454 @Override 2455 public void writeToParcel(Parcel dest, int flags) { 2456 dest.writeInt(stackId); 2457 dest.writeInt(bounds.left); 2458 dest.writeInt(bounds.top); 2459 dest.writeInt(bounds.right); 2460 dest.writeInt(bounds.bottom); 2461 dest.writeIntArray(taskIds); 2462 dest.writeStringArray(taskNames); 2463 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2464 dest.writeInt(boundsCount); 2465 for (int i = 0; i < boundsCount; i++) { 2466 dest.writeInt(taskBounds[i].left); 2467 dest.writeInt(taskBounds[i].top); 2468 dest.writeInt(taskBounds[i].right); 2469 dest.writeInt(taskBounds[i].bottom); 2470 } 2471 dest.writeIntArray(taskUserIds); 2472 dest.writeInt(displayId); 2473 dest.writeInt(userId); 2474 dest.writeInt(visible ? 1 : 0); 2475 dest.writeInt(position); 2476 if (topActivity != null) { 2477 dest.writeInt(1); 2478 topActivity.writeToParcel(dest, 0); 2479 } else { 2480 dest.writeInt(0); 2481 } 2482 configuration.writeToParcel(dest, flags); 2483 } 2484 2485 public void readFromParcel(Parcel source) { 2486 stackId = source.readInt(); 2487 bounds = new Rect( 2488 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2489 taskIds = source.createIntArray(); 2490 taskNames = source.createStringArray(); 2491 final int boundsCount = source.readInt(); 2492 if (boundsCount > 0) { 2493 taskBounds = new Rect[boundsCount]; 2494 for (int i = 0; i < boundsCount; i++) { 2495 taskBounds[i] = new Rect(); 2496 taskBounds[i].set( 2497 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2498 } 2499 } else { 2500 taskBounds = null; 2501 } 2502 taskUserIds = source.createIntArray(); 2503 displayId = source.readInt(); 2504 userId = source.readInt(); 2505 visible = source.readInt() > 0; 2506 position = source.readInt(); 2507 if (source.readInt() > 0) { 2508 topActivity = ComponentName.readFromParcel(source); 2509 } 2510 configuration.readFromParcel(source); 2511 } 2512 2513 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2514 @Override 2515 public StackInfo createFromParcel(Parcel source) { 2516 return new StackInfo(source); 2517 } 2518 @Override 2519 public StackInfo[] newArray(int size) { 2520 return new StackInfo[size]; 2521 } 2522 }; 2523 2524 public StackInfo() { 2525 } 2526 2527 private StackInfo(Parcel source) { 2528 readFromParcel(source); 2529 } 2530 2531 public String toString(String prefix) { 2532 StringBuilder sb = new StringBuilder(256); 2533 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2534 sb.append(" bounds="); sb.append(bounds.toShortString()); 2535 sb.append(" displayId="); sb.append(displayId); 2536 sb.append(" userId="); sb.append(userId); 2537 sb.append("\n"); 2538 sb.append(" configuration="); sb.append(configuration); 2539 sb.append("\n"); 2540 prefix = prefix + " "; 2541 for (int i = 0; i < taskIds.length; ++i) { 2542 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2543 sb.append(": "); sb.append(taskNames[i]); 2544 if (taskBounds != null) { 2545 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2546 } 2547 sb.append(" userId=").append(taskUserIds[i]); 2548 sb.append(" visible=").append(visible); 2549 if (topActivity != null) { 2550 sb.append(" topActivity=").append(topActivity); 2551 } 2552 sb.append("\n"); 2553 } 2554 return sb.toString(); 2555 } 2556 2557 @Override 2558 public String toString() { 2559 return toString(""); 2560 } 2561 } 2562 2563 /** 2564 * @hide 2565 */ 2566 @RequiresPermission(anyOf={Manifest.permission.CLEAR_APP_USER_DATA, 2567 Manifest.permission.ACCESS_INSTANT_APPS}) 2568 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2569 try { 2570 return getService().clearApplicationUserData(packageName, 2571 observer, UserHandle.myUserId()); 2572 } catch (RemoteException e) { 2573 throw e.rethrowFromSystemServer(); 2574 } 2575 } 2576 2577 /** 2578 * Permits an application to erase its own data from disk. This is equivalent to 2579 * the user choosing to clear the app's data from within the device settings UI. It 2580 * erases all dynamic data associated with the app -- its private data and data in its 2581 * private area on external storage -- but does not remove the installed application 2582 * itself, nor any OBB files. It also revokes all runtime permissions that the app has acquired, 2583 * clears all notifications and removes all Uri grants related to this application. 2584 * 2585 * @return {@code true} if the application successfully requested that the application's 2586 * data be erased; {@code false} otherwise. 2587 */ 2588 public boolean clearApplicationUserData() { 2589 return clearApplicationUserData(mContext.getPackageName(), null); 2590 } 2591 2592 2593 /** 2594 * Permits an application to get the persistent URI permissions granted to another. 2595 * 2596 * <p>Typically called by Settings. 2597 * 2598 * @param packageName application to look for the granted permissions 2599 * @return list of granted URI permissions 2600 * 2601 * @hide 2602 */ 2603 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2604 try { 2605 return getService().getGrantedUriPermissions(packageName, 2606 UserHandle.myUserId()); 2607 } catch (RemoteException e) { 2608 throw e.rethrowFromSystemServer(); 2609 } 2610 } 2611 2612 /** 2613 * Permits an application to clear the persistent URI permissions granted to another. 2614 * 2615 * <p>Typically called by Settings. 2616 * 2617 * @param packageName application to clear its granted permissions 2618 * 2619 * @hide 2620 */ 2621 public void clearGrantedUriPermissions(String packageName) { 2622 try { 2623 getService().clearGrantedUriPermissions(packageName, 2624 UserHandle.myUserId()); 2625 } catch (RemoteException e) { 2626 throw e.rethrowFromSystemServer(); 2627 } 2628 } 2629 2630 /** 2631 * Information you can retrieve about any processes that are in an error condition. 2632 */ 2633 public static class ProcessErrorStateInfo implements Parcelable { 2634 /** 2635 * Condition codes 2636 */ 2637 public static final int NO_ERROR = 0; 2638 public static final int CRASHED = 1; 2639 public static final int NOT_RESPONDING = 2; 2640 2641 /** 2642 * The condition that the process is in. 2643 */ 2644 public int condition; 2645 2646 /** 2647 * The process name in which the crash or error occurred. 2648 */ 2649 public String processName; 2650 2651 /** 2652 * The pid of this process; 0 if none 2653 */ 2654 public int pid; 2655 2656 /** 2657 * The kernel user-ID that has been assigned to this process; 2658 * currently this is not a unique ID (multiple applications can have 2659 * the same uid). 2660 */ 2661 public int uid; 2662 2663 /** 2664 * The activity name associated with the error, if known. May be null. 2665 */ 2666 public String tag; 2667 2668 /** 2669 * A short message describing the error condition. 2670 */ 2671 public String shortMsg; 2672 2673 /** 2674 * A long message describing the error condition. 2675 */ 2676 public String longMsg; 2677 2678 /** 2679 * The stack trace where the error originated. May be null. 2680 */ 2681 public String stackTrace; 2682 2683 /** 2684 * to be deprecated: This value will always be null. 2685 */ 2686 public byte[] crashData = null; 2687 2688 public ProcessErrorStateInfo() { 2689 } 2690 2691 @Override 2692 public int describeContents() { 2693 return 0; 2694 } 2695 2696 @Override 2697 public void writeToParcel(Parcel dest, int flags) { 2698 dest.writeInt(condition); 2699 dest.writeString(processName); 2700 dest.writeInt(pid); 2701 dest.writeInt(uid); 2702 dest.writeString(tag); 2703 dest.writeString(shortMsg); 2704 dest.writeString(longMsg); 2705 dest.writeString(stackTrace); 2706 } 2707 2708 public void readFromParcel(Parcel source) { 2709 condition = source.readInt(); 2710 processName = source.readString(); 2711 pid = source.readInt(); 2712 uid = source.readInt(); 2713 tag = source.readString(); 2714 shortMsg = source.readString(); 2715 longMsg = source.readString(); 2716 stackTrace = source.readString(); 2717 } 2718 2719 public static final Creator<ProcessErrorStateInfo> CREATOR = 2720 new Creator<ProcessErrorStateInfo>() { 2721 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2722 return new ProcessErrorStateInfo(source); 2723 } 2724 public ProcessErrorStateInfo[] newArray(int size) { 2725 return new ProcessErrorStateInfo[size]; 2726 } 2727 }; 2728 2729 private ProcessErrorStateInfo(Parcel source) { 2730 readFromParcel(source); 2731 } 2732 } 2733 2734 /** 2735 * Returns a list of any processes that are currently in an error condition. The result 2736 * will be null if all processes are running properly at this time. 2737 * 2738 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2739 * current error conditions (it will not return an empty list). This list ordering is not 2740 * specified. 2741 */ 2742 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2743 try { 2744 return getService().getProcessesInErrorState(); 2745 } catch (RemoteException e) { 2746 throw e.rethrowFromSystemServer(); 2747 } 2748 } 2749 2750 /** 2751 * Information you can retrieve about a running process. 2752 */ 2753 public static class RunningAppProcessInfo implements Parcelable { 2754 /** 2755 * The name of the process that this object is associated with 2756 */ 2757 public String processName; 2758 2759 /** 2760 * The pid of this process; 0 if none 2761 */ 2762 public int pid; 2763 2764 /** 2765 * The user id of this process. 2766 */ 2767 public int uid; 2768 2769 /** 2770 * All packages that have been loaded into the process. 2771 */ 2772 public String pkgList[]; 2773 2774 /** 2775 * Constant for {@link #flags}: this is an app that is unable to 2776 * correctly save its state when going to the background, 2777 * so it can not be killed while in the background. 2778 * @hide 2779 */ 2780 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2781 2782 /** 2783 * Constant for {@link #flags}: this process is associated with a 2784 * persistent system app. 2785 * @hide 2786 */ 2787 public static final int FLAG_PERSISTENT = 1<<1; 2788 2789 /** 2790 * Constant for {@link #flags}: this process is associated with a 2791 * persistent system app. 2792 * @hide 2793 */ 2794 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2795 2796 /** 2797 * Flags of information. May be any of 2798 * {@link #FLAG_CANT_SAVE_STATE}. 2799 * @hide 2800 */ 2801 public int flags; 2802 2803 /** 2804 * Last memory trim level reported to the process: corresponds to 2805 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2806 * ComponentCallbacks2.onTrimMemory(int)}. 2807 */ 2808 public int lastTrimLevel; 2809 2810 /** @hide */ 2811 @IntDef(prefix = { "IMPORTANCE_" }, value = { 2812 IMPORTANCE_FOREGROUND, 2813 IMPORTANCE_FOREGROUND_SERVICE, 2814 IMPORTANCE_TOP_SLEEPING, 2815 IMPORTANCE_VISIBLE, 2816 IMPORTANCE_PERCEPTIBLE, 2817 IMPORTANCE_CANT_SAVE_STATE, 2818 IMPORTANCE_SERVICE, 2819 IMPORTANCE_CACHED, 2820 IMPORTANCE_GONE, 2821 }) 2822 @Retention(RetentionPolicy.SOURCE) 2823 public @interface Importance {} 2824 2825 /** 2826 * Constant for {@link #importance}: This process is running the 2827 * foreground UI; that is, it is the thing currently at the top of the screen 2828 * that the user is interacting with. 2829 */ 2830 public static final int IMPORTANCE_FOREGROUND = 100; 2831 2832 /** 2833 * Constant for {@link #importance}: This process is running a foreground 2834 * service, for example to perform music playback even while the user is 2835 * not immediately in the app. This generally indicates that the process 2836 * is doing something the user actively cares about. 2837 */ 2838 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2839 2840 /** 2841 * Constant for {@link #importance}: This process is running the foreground 2842 * UI, but the device is asleep so it is not visible to the user. This means 2843 * the user is not really aware of the process, because they can not see or 2844 * interact with it, but it is quite important because it what they expect to 2845 * return to once unlocking the device. 2846 */ 2847 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2848 2849 /** 2850 * Constant for {@link #importance}: This process is running something 2851 * that is actively visible to the user, though not in the immediate 2852 * foreground. This may be running a window that is behind the current 2853 * foreground (so paused and with its state saved, not interacting with 2854 * the user, but visible to them to some degree); it may also be running 2855 * other services under the system's control that it inconsiders important. 2856 */ 2857 public static final int IMPORTANCE_VISIBLE = 200; 2858 2859 /** 2860 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 2861 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2862 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 2863 * 2864 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 2865 * on Android versions below {@link Build.VERSION_CODES#O}. 2866 * 2867 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 2868 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2869 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2870 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 2871 */ 2872 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 2873 2874 /** 2875 * Constant for {@link #importance}: This process is not something the user 2876 * is directly aware of, but is otherwise perceptible to them to some degree. 2877 */ 2878 public static final int IMPORTANCE_PERCEPTIBLE = 230; 2879 2880 /** 2881 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 2882 * this wrong value 2883 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2884 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 2885 * 2886 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 2887 * on Android versions below {@link Build.VERSION_CODES#O}. 2888 * 2889 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 2890 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2891 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2892 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 2893 * 2894 * @hide 2895 */ 2896 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 2897 2898 /** 2899 * Constant for {@link #importance}: This process is running an 2900 * application that can not save its state, and thus can't be killed 2901 * while in the background. 2902 * @hide 2903 */ 2904 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 2905 2906 /** 2907 * Constant for {@link #importance}: This process is contains services 2908 * that should remain running. These are background services apps have 2909 * started, not something the user is aware of, so they may be killed by 2910 * the system relatively freely (though it is generally desired that they 2911 * stay running as long as they want to). 2912 */ 2913 public static final int IMPORTANCE_SERVICE = 300; 2914 2915 /** 2916 * Constant for {@link #importance}: This process process contains 2917 * cached code that is expendable, not actively running any app components 2918 * we care about. 2919 */ 2920 public static final int IMPORTANCE_CACHED = 400; 2921 2922 /** 2923 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 2924 */ 2925 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 2926 2927 /** 2928 * Constant for {@link #importance}: This process is empty of any 2929 * actively running code. 2930 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 2931 */ 2932 @Deprecated 2933 public static final int IMPORTANCE_EMPTY = 500; 2934 2935 /** 2936 * Constant for {@link #importance}: This process does not exist. 2937 */ 2938 public static final int IMPORTANCE_GONE = 1000; 2939 2940 /** 2941 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 2942 * will be passed to a client, use {@link #procStateToImportanceForClient}. 2943 * @hide 2944 */ 2945 public static @Importance int procStateToImportance(int procState) { 2946 if (procState == PROCESS_STATE_NONEXISTENT) { 2947 return IMPORTANCE_GONE; 2948 } else if (procState >= PROCESS_STATE_HOME) { 2949 return IMPORTANCE_CACHED; 2950 } else if (procState >= PROCESS_STATE_SERVICE) { 2951 return IMPORTANCE_SERVICE; 2952 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2953 return IMPORTANCE_CANT_SAVE_STATE; 2954 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 2955 return IMPORTANCE_PERCEPTIBLE; 2956 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2957 return IMPORTANCE_VISIBLE; 2958 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2959 return IMPORTANCE_TOP_SLEEPING; 2960 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2961 return IMPORTANCE_FOREGROUND_SERVICE; 2962 } else { 2963 return IMPORTANCE_FOREGROUND; 2964 } 2965 } 2966 2967 /** 2968 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 2969 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 2970 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 2971 * client's target SDK < {@link VERSION_CODES#O}. 2972 * @hide 2973 */ 2974 public static @Importance int procStateToImportanceForClient(int procState, 2975 Context clientContext) { 2976 return procStateToImportanceForTargetSdk(procState, 2977 clientContext.getApplicationInfo().targetSdkVersion); 2978 } 2979 2980 /** 2981 * See {@link #procStateToImportanceForClient}. 2982 * @hide 2983 */ 2984 public static @Importance int procStateToImportanceForTargetSdk(int procState, 2985 int targetSdkVersion) { 2986 final int importance = procStateToImportance(procState); 2987 2988 // For pre O apps, convert to the old, wrong values. 2989 if (targetSdkVersion < VERSION_CODES.O) { 2990 switch (importance) { 2991 case IMPORTANCE_PERCEPTIBLE: 2992 return IMPORTANCE_PERCEPTIBLE_PRE_26; 2993 case IMPORTANCE_CANT_SAVE_STATE: 2994 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 2995 } 2996 } 2997 return importance; 2998 } 2999 3000 /** @hide */ 3001 public static int importanceToProcState(@Importance int importance) { 3002 if (importance == IMPORTANCE_GONE) { 3003 return PROCESS_STATE_NONEXISTENT; 3004 } else if (importance >= IMPORTANCE_CACHED) { 3005 return PROCESS_STATE_HOME; 3006 } else if (importance >= IMPORTANCE_SERVICE) { 3007 return PROCESS_STATE_SERVICE; 3008 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3009 return PROCESS_STATE_HEAVY_WEIGHT; 3010 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3011 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3012 } else if (importance >= IMPORTANCE_VISIBLE) { 3013 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3014 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3015 return PROCESS_STATE_TOP_SLEEPING; 3016 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3017 return PROCESS_STATE_FOREGROUND_SERVICE; 3018 } else { 3019 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3020 } 3021 } 3022 3023 /** 3024 * The relative importance level that the system places on this process. 3025 * These constants are numbered so that "more important" values are 3026 * always smaller than "less important" values. 3027 */ 3028 public @Importance int importance; 3029 3030 /** 3031 * An additional ordering within a particular {@link #importance} 3032 * category, providing finer-grained information about the relative 3033 * utility of processes within a category. This number means nothing 3034 * except that a smaller values are more recently used (and thus 3035 * more important). Currently an LRU value is only maintained for 3036 * the {@link #IMPORTANCE_CACHED} category, though others may 3037 * be maintained in the future. 3038 */ 3039 public int lru; 3040 3041 /** 3042 * Constant for {@link #importanceReasonCode}: nothing special has 3043 * been specified for the reason for this level. 3044 */ 3045 public static final int REASON_UNKNOWN = 0; 3046 3047 /** 3048 * Constant for {@link #importanceReasonCode}: one of the application's 3049 * content providers is being used by another process. The pid of 3050 * the client process is in {@link #importanceReasonPid} and the 3051 * target provider in this process is in 3052 * {@link #importanceReasonComponent}. 3053 */ 3054 public static final int REASON_PROVIDER_IN_USE = 1; 3055 3056 /** 3057 * Constant for {@link #importanceReasonCode}: one of the application's 3058 * content providers is being used by another process. The pid of 3059 * the client process is in {@link #importanceReasonPid} and the 3060 * target provider in this process is in 3061 * {@link #importanceReasonComponent}. 3062 */ 3063 public static final int REASON_SERVICE_IN_USE = 2; 3064 3065 /** 3066 * The reason for {@link #importance}, if any. 3067 */ 3068 public int importanceReasonCode; 3069 3070 /** 3071 * For the specified values of {@link #importanceReasonCode}, this 3072 * is the process ID of the other process that is a client of this 3073 * process. This will be 0 if no other process is using this one. 3074 */ 3075 public int importanceReasonPid; 3076 3077 /** 3078 * For the specified values of {@link #importanceReasonCode}, this 3079 * is the name of the component that is being used in this process. 3080 */ 3081 public ComponentName importanceReasonComponent; 3082 3083 /** 3084 * When {@link #importanceReasonPid} is non-0, this is the importance 3085 * of the other pid. @hide 3086 */ 3087 public int importanceReasonImportance; 3088 3089 /** 3090 * Current process state, as per PROCESS_STATE_* constants. 3091 * @hide 3092 */ 3093 public int processState; 3094 3095 public RunningAppProcessInfo() { 3096 importance = IMPORTANCE_FOREGROUND; 3097 importanceReasonCode = REASON_UNKNOWN; 3098 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3099 } 3100 3101 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3102 processName = pProcessName; 3103 pid = pPid; 3104 pkgList = pArr; 3105 } 3106 3107 public int describeContents() { 3108 return 0; 3109 } 3110 3111 public void writeToParcel(Parcel dest, int flags) { 3112 dest.writeString(processName); 3113 dest.writeInt(pid); 3114 dest.writeInt(uid); 3115 dest.writeStringArray(pkgList); 3116 dest.writeInt(this.flags); 3117 dest.writeInt(lastTrimLevel); 3118 dest.writeInt(importance); 3119 dest.writeInt(lru); 3120 dest.writeInt(importanceReasonCode); 3121 dest.writeInt(importanceReasonPid); 3122 ComponentName.writeToParcel(importanceReasonComponent, dest); 3123 dest.writeInt(importanceReasonImportance); 3124 dest.writeInt(processState); 3125 } 3126 3127 public void readFromParcel(Parcel source) { 3128 processName = source.readString(); 3129 pid = source.readInt(); 3130 uid = source.readInt(); 3131 pkgList = source.readStringArray(); 3132 flags = source.readInt(); 3133 lastTrimLevel = source.readInt(); 3134 importance = source.readInt(); 3135 lru = source.readInt(); 3136 importanceReasonCode = source.readInt(); 3137 importanceReasonPid = source.readInt(); 3138 importanceReasonComponent = ComponentName.readFromParcel(source); 3139 importanceReasonImportance = source.readInt(); 3140 processState = source.readInt(); 3141 } 3142 3143 public static final Creator<RunningAppProcessInfo> CREATOR = 3144 new Creator<RunningAppProcessInfo>() { 3145 public RunningAppProcessInfo createFromParcel(Parcel source) { 3146 return new RunningAppProcessInfo(source); 3147 } 3148 public RunningAppProcessInfo[] newArray(int size) { 3149 return new RunningAppProcessInfo[size]; 3150 } 3151 }; 3152 3153 private RunningAppProcessInfo(Parcel source) { 3154 readFromParcel(source); 3155 } 3156 } 3157 3158 /** 3159 * Returns a list of application processes installed on external media 3160 * that are running on the device. 3161 * 3162 * <p><b>Note: this method is only intended for debugging or building 3163 * a user-facing process management UI.</b></p> 3164 * 3165 * @return Returns a list of ApplicationInfo records, or null if none 3166 * This list ordering is not specified. 3167 * @hide 3168 */ 3169 public List<ApplicationInfo> getRunningExternalApplications() { 3170 try { 3171 return getService().getRunningExternalApplications(); 3172 } catch (RemoteException e) { 3173 throw e.rethrowFromSystemServer(); 3174 } 3175 } 3176 3177 /** 3178 * Sets the memory trim mode for a process and schedules a memory trim operation. 3179 * 3180 * <p><b>Note: this method is only intended for testing framework.</b></p> 3181 * 3182 * @return Returns true if successful. 3183 * @hide 3184 */ 3185 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3186 try { 3187 return getService().setProcessMemoryTrimLevel(process, userId, 3188 level); 3189 } catch (RemoteException e) { 3190 throw e.rethrowFromSystemServer(); 3191 } 3192 } 3193 3194 /** 3195 * Returns a list of application processes that are running on the device. 3196 * 3197 * <p><b>Note: this method is only intended for debugging or building 3198 * a user-facing process management UI.</b></p> 3199 * 3200 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3201 * running processes (it will not return an empty list). This list ordering is not 3202 * specified. 3203 */ 3204 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3205 try { 3206 return getService().getRunningAppProcesses(); 3207 } catch (RemoteException e) { 3208 throw e.rethrowFromSystemServer(); 3209 } 3210 } 3211 3212 /** 3213 * Return the importance of a given package name, based on the processes that are 3214 * currently running. The return value is one of the importance constants defined 3215 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3216 * processes that this package has code running inside of. If there are no processes 3217 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3218 * @hide 3219 */ 3220 @SystemApi @TestApi 3221 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3222 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3223 try { 3224 int procState = getService().getPackageProcessState(packageName, 3225 mContext.getOpPackageName()); 3226 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3227 } catch (RemoteException e) { 3228 throw e.rethrowFromSystemServer(); 3229 } 3230 } 3231 3232 /** 3233 * Return the importance of a given uid, based on the processes that are 3234 * currently running. The return value is one of the importance constants defined 3235 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3236 * processes that this uid has running. If there are no processes 3237 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3238 * @hide 3239 */ 3240 @SystemApi @TestApi 3241 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3242 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3243 try { 3244 int procState = getService().getUidProcessState(uid, 3245 mContext.getOpPackageName()); 3246 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3247 } catch (RemoteException e) { 3248 throw e.rethrowFromSystemServer(); 3249 } 3250 } 3251 3252 /** 3253 * Callback to get reports about changes to the importance of a uid. Use with 3254 * {@link #addOnUidImportanceListener}. 3255 * @hide 3256 */ 3257 @SystemApi @TestApi 3258 public interface OnUidImportanceListener { 3259 /** 3260 * The importance if a given uid has changed. Will be one of the importance 3261 * values in {@link RunningAppProcessInfo}; 3262 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3263 * when the uid is no longer running at all. This callback will happen on a thread 3264 * from a thread pool, not the main UI thread. 3265 * @param uid The uid whose importance has changed. 3266 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3267 */ 3268 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3269 } 3270 3271 /** 3272 * Start monitoring changes to the imoportance of uids running in the system. 3273 * @param listener The listener callback that will receive change reports. 3274 * @param importanceCutpoint The level of importance in which the caller is interested 3275 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3276 * is used here, you will receive a call each time a uids importance transitions between 3277 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3278 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3279 * 3280 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3281 * permission to use this feature.</p> 3282 * 3283 * @throws IllegalArgumentException If the listener is already registered. 3284 * @throws SecurityException If the caller does not hold 3285 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3286 * @hide 3287 */ 3288 @SystemApi @TestApi 3289 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3290 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3291 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3292 synchronized (this) { 3293 if (mImportanceListeners.containsKey(listener)) { 3294 throw new IllegalArgumentException("Listener already registered: " + listener); 3295 } 3296 // TODO: implement the cut point in the system process to avoid IPCs. 3297 UidObserver observer = new UidObserver(listener, mContext); 3298 try { 3299 getService().registerUidObserver(observer, 3300 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3301 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3302 mContext.getOpPackageName()); 3303 } catch (RemoteException e) { 3304 throw e.rethrowFromSystemServer(); 3305 } 3306 mImportanceListeners.put(listener, observer); 3307 } 3308 } 3309 3310 /** 3311 * Remove an importance listener that was previously registered with 3312 * {@link #addOnUidImportanceListener}. 3313 * 3314 * @throws IllegalArgumentException If the listener is not registered. 3315 * @hide 3316 */ 3317 @SystemApi @TestApi 3318 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3319 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3320 synchronized (this) { 3321 UidObserver observer = mImportanceListeners.remove(listener); 3322 if (observer == null) { 3323 throw new IllegalArgumentException("Listener not registered: " + listener); 3324 } 3325 try { 3326 getService().unregisterUidObserver(observer); 3327 } catch (RemoteException e) { 3328 throw e.rethrowFromSystemServer(); 3329 } 3330 } 3331 } 3332 3333 /** 3334 * Return global memory state information for the calling process. This 3335 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3336 * only fields that will be filled in are 3337 * {@link RunningAppProcessInfo#pid}, 3338 * {@link RunningAppProcessInfo#uid}, 3339 * {@link RunningAppProcessInfo#lastTrimLevel}, 3340 * {@link RunningAppProcessInfo#importance}, 3341 * {@link RunningAppProcessInfo#lru}, and 3342 * {@link RunningAppProcessInfo#importanceReasonCode}. 3343 */ 3344 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3345 try { 3346 getService().getMyMemoryState(outState); 3347 } catch (RemoteException e) { 3348 throw e.rethrowFromSystemServer(); 3349 } 3350 } 3351 3352 /** 3353 * Return information about the memory usage of one or more processes. 3354 * 3355 * <p><b>Note: this method is only intended for debugging or building 3356 * a user-facing process management UI.</b></p> 3357 * 3358 * @param pids The pids of the processes whose memory usage is to be 3359 * retrieved. 3360 * @return Returns an array of memory information, one for each 3361 * requested pid. 3362 */ 3363 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3364 try { 3365 return getService().getProcessMemoryInfo(pids); 3366 } catch (RemoteException e) { 3367 throw e.rethrowFromSystemServer(); 3368 } 3369 } 3370 3371 /** 3372 * @deprecated This is now just a wrapper for 3373 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3374 * is no longer available to applications because it allows them to 3375 * break other applications by removing their alarms, stopping their 3376 * services, etc. 3377 */ 3378 @Deprecated 3379 public void restartPackage(String packageName) { 3380 killBackgroundProcesses(packageName); 3381 } 3382 3383 /** 3384 * Have the system immediately kill all background processes associated 3385 * with the given package. This is the same as the kernel killing those 3386 * processes to reclaim memory; the system will take care of restarting 3387 * these processes in the future as needed. 3388 * 3389 * @param packageName The name of the package whose processes are to 3390 * be killed. 3391 */ 3392 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3393 public void killBackgroundProcesses(String packageName) { 3394 try { 3395 getService().killBackgroundProcesses(packageName, 3396 UserHandle.myUserId()); 3397 } catch (RemoteException e) { 3398 throw e.rethrowFromSystemServer(); 3399 } 3400 } 3401 3402 /** 3403 * Kills the specified UID. 3404 * @param uid The UID to kill. 3405 * @param reason The reason for the kill. 3406 * 3407 * @hide 3408 */ 3409 @SystemApi 3410 @RequiresPermission(Manifest.permission.KILL_UID) 3411 public void killUid(int uid, String reason) { 3412 try { 3413 getService().killUid(UserHandle.getAppId(uid), 3414 UserHandle.getUserId(uid), reason); 3415 } catch (RemoteException e) { 3416 throw e.rethrowFromSystemServer(); 3417 } 3418 } 3419 3420 /** 3421 * Have the system perform a force stop of everything associated with 3422 * the given application package. All processes that share its uid 3423 * will be killed, all services it has running stopped, all activities 3424 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3425 * broadcast will be sent, so that any of its registered alarms can 3426 * be stopped, notifications removed, etc. 3427 * 3428 * <p>You must hold the permission 3429 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3430 * call this method. 3431 * 3432 * @param packageName The name of the package to be stopped. 3433 * @param userId The user for which the running package is to be stopped. 3434 * 3435 * @hide This is not available to third party applications due to 3436 * it allowing them to break other applications by stopping their 3437 * services, removing their alarms, etc. 3438 */ 3439 public void forceStopPackageAsUser(String packageName, int userId) { 3440 try { 3441 getService().forceStopPackage(packageName, userId); 3442 } catch (RemoteException e) { 3443 throw e.rethrowFromSystemServer(); 3444 } 3445 } 3446 3447 /** 3448 * @see #forceStopPackageAsUser(String, int) 3449 * @hide 3450 */ 3451 @SystemApi 3452 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3453 public void forceStopPackage(String packageName) { 3454 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3455 } 3456 3457 /** 3458 * Get the device configuration attributes. 3459 */ 3460 public ConfigurationInfo getDeviceConfigurationInfo() { 3461 try { 3462 return getService().getDeviceConfigurationInfo(); 3463 } catch (RemoteException e) { 3464 throw e.rethrowFromSystemServer(); 3465 } 3466 } 3467 3468 /** 3469 * Get the preferred density of icons for the launcher. This is used when 3470 * custom drawables are created (e.g., for shortcuts). 3471 * 3472 * @return density in terms of DPI 3473 */ 3474 public int getLauncherLargeIconDensity() { 3475 final Resources res = mContext.getResources(); 3476 final int density = res.getDisplayMetrics().densityDpi; 3477 final int sw = res.getConfiguration().smallestScreenWidthDp; 3478 3479 if (sw < 600) { 3480 // Smaller than approx 7" tablets, use the regular icon size. 3481 return density; 3482 } 3483 3484 switch (density) { 3485 case DisplayMetrics.DENSITY_LOW: 3486 return DisplayMetrics.DENSITY_MEDIUM; 3487 case DisplayMetrics.DENSITY_MEDIUM: 3488 return DisplayMetrics.DENSITY_HIGH; 3489 case DisplayMetrics.DENSITY_TV: 3490 return DisplayMetrics.DENSITY_XHIGH; 3491 case DisplayMetrics.DENSITY_HIGH: 3492 return DisplayMetrics.DENSITY_XHIGH; 3493 case DisplayMetrics.DENSITY_XHIGH: 3494 return DisplayMetrics.DENSITY_XXHIGH; 3495 case DisplayMetrics.DENSITY_XXHIGH: 3496 return DisplayMetrics.DENSITY_XHIGH * 2; 3497 default: 3498 // The density is some abnormal value. Return some other 3499 // abnormal value that is a reasonable scaling of it. 3500 return (int)((density*1.5f)+.5f); 3501 } 3502 } 3503 3504 /** 3505 * Get the preferred launcher icon size. This is used when custom drawables 3506 * are created (e.g., for shortcuts). 3507 * 3508 * @return dimensions of square icons in terms of pixels 3509 */ 3510 public int getLauncherLargeIconSize() { 3511 return getLauncherLargeIconSizeInner(mContext); 3512 } 3513 3514 static int getLauncherLargeIconSizeInner(Context context) { 3515 final Resources res = context.getResources(); 3516 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3517 final int sw = res.getConfiguration().smallestScreenWidthDp; 3518 3519 if (sw < 600) { 3520 // Smaller than approx 7" tablets, use the regular icon size. 3521 return size; 3522 } 3523 3524 final int density = res.getDisplayMetrics().densityDpi; 3525 3526 switch (density) { 3527 case DisplayMetrics.DENSITY_LOW: 3528 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3529 case DisplayMetrics.DENSITY_MEDIUM: 3530 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3531 case DisplayMetrics.DENSITY_TV: 3532 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3533 case DisplayMetrics.DENSITY_HIGH: 3534 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3535 case DisplayMetrics.DENSITY_XHIGH: 3536 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3537 case DisplayMetrics.DENSITY_XXHIGH: 3538 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3539 default: 3540 // The density is some abnormal value. Return some other 3541 // abnormal value that is a reasonable scaling of it. 3542 return (int)((size*1.5f) + .5f); 3543 } 3544 } 3545 3546 /** 3547 * Returns "true" if the user interface is currently being messed with 3548 * by a monkey. 3549 */ 3550 public static boolean isUserAMonkey() { 3551 try { 3552 return getService().isUserAMonkey(); 3553 } catch (RemoteException e) { 3554 throw e.rethrowFromSystemServer(); 3555 } 3556 } 3557 3558 /** 3559 * Returns "true" if device is running in a test harness. 3560 */ 3561 public static boolean isRunningInTestHarness() { 3562 return SystemProperties.getBoolean("ro.test_harness", false); 3563 } 3564 3565 /** 3566 * Returns the launch count of each installed package. 3567 * 3568 * @hide 3569 */ 3570 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3571 try { 3572 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3573 ServiceManager.getService("usagestats")); 3574 if (usageStatsService == null) { 3575 return new HashMap<String, Integer>(); 3576 } 3577 3578 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3579 ActivityThread.currentPackageName()); 3580 if (allPkgUsageStats == null) { 3581 return new HashMap<String, Integer>(); 3582 } 3583 3584 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3585 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3586 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3587 } 3588 3589 return launchCounts; 3590 } catch (RemoteException e) { 3591 Log.w(TAG, "Could not query launch counts", e); 3592 return new HashMap<String, Integer>(); 3593 } 3594 }*/ 3595 3596 /** @hide */ 3597 public static int checkComponentPermission(String permission, int uid, 3598 int owningUid, boolean exported) { 3599 // Root, system server get to do everything. 3600 final int appId = UserHandle.getAppId(uid); 3601 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3602 return PackageManager.PERMISSION_GRANTED; 3603 } 3604 // Isolated processes don't get any permissions. 3605 if (UserHandle.isIsolated(uid)) { 3606 return PackageManager.PERMISSION_DENIED; 3607 } 3608 // If there is a uid that owns whatever is being accessed, it has 3609 // blanket access to it regardless of the permissions it requires. 3610 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3611 return PackageManager.PERMISSION_GRANTED; 3612 } 3613 // If the target is not exported, then nobody else can get to it. 3614 if (!exported) { 3615 /* 3616 RuntimeException here = new RuntimeException("here"); 3617 here.fillInStackTrace(); 3618 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3619 here); 3620 */ 3621 return PackageManager.PERMISSION_DENIED; 3622 } 3623 if (permission == null) { 3624 return PackageManager.PERMISSION_GRANTED; 3625 } 3626 try { 3627 return AppGlobals.getPackageManager() 3628 .checkUidPermission(permission, uid); 3629 } catch (RemoteException e) { 3630 throw e.rethrowFromSystemServer(); 3631 } 3632 } 3633 3634 /** @hide */ 3635 public static int checkUidPermission(String permission, int uid) { 3636 try { 3637 return AppGlobals.getPackageManager() 3638 .checkUidPermission(permission, uid); 3639 } catch (RemoteException e) { 3640 throw e.rethrowFromSystemServer(); 3641 } 3642 } 3643 3644 /** 3645 * @hide 3646 * Helper for dealing with incoming user arguments to system service calls. 3647 * Takes care of checking permissions and converting USER_CURRENT to the 3648 * actual current user. 3649 * 3650 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3651 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3652 * @param userId The user id argument supplied by the caller -- this is the user 3653 * they want to run as. 3654 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3655 * to get a USER_ALL returned and deal with it correctly. If false, 3656 * an exception will be thrown if USER_ALL is supplied. 3657 * @param requireFull If true, the caller must hold 3658 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3659 * different user than their current process; otherwise they must hold 3660 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3661 * @param name Optional textual name of the incoming call; only for generating error messages. 3662 * @param callerPackage Optional package name of caller; only for error messages. 3663 * 3664 * @return Returns the user ID that the call should run as. Will always be a concrete 3665 * user number, unless <var>allowAll</var> is true in which case it could also be 3666 * USER_ALL. 3667 */ 3668 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3669 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3670 if (UserHandle.getUserId(callingUid) == userId) { 3671 return userId; 3672 } 3673 try { 3674 return getService().handleIncomingUser(callingPid, 3675 callingUid, userId, allowAll, requireFull, name, callerPackage); 3676 } catch (RemoteException e) { 3677 throw e.rethrowFromSystemServer(); 3678 } 3679 } 3680 3681 /** 3682 * Gets the userId of the current foreground user. Requires system permissions. 3683 * @hide 3684 */ 3685 @SystemApi 3686 @RequiresPermission(anyOf = { 3687 "android.permission.INTERACT_ACROSS_USERS", 3688 "android.permission.INTERACT_ACROSS_USERS_FULL" 3689 }) 3690 public static int getCurrentUser() { 3691 UserInfo ui; 3692 try { 3693 ui = getService().getCurrentUser(); 3694 return ui != null ? ui.id : 0; 3695 } catch (RemoteException e) { 3696 throw e.rethrowFromSystemServer(); 3697 } 3698 } 3699 3700 /** 3701 * @param userid the user's id. Zero indicates the default user. 3702 * @hide 3703 */ 3704 public boolean switchUser(int userid) { 3705 try { 3706 return getService().switchUser(userid); 3707 } catch (RemoteException e) { 3708 throw e.rethrowFromSystemServer(); 3709 } 3710 } 3711 3712 /** 3713 * Logs out current current foreground user by switching to the system user and stopping the 3714 * user being switched from. 3715 * @hide 3716 */ 3717 public static void logoutCurrentUser() { 3718 int currentUser = ActivityManager.getCurrentUser(); 3719 if (currentUser != UserHandle.USER_SYSTEM) { 3720 try { 3721 getService().switchUser(UserHandle.USER_SYSTEM); 3722 getService().stopUser(currentUser, /* force= */ false, null); 3723 } catch (RemoteException e) { 3724 e.rethrowFromSystemServer(); 3725 } 3726 } 3727 } 3728 3729 /** {@hide} */ 3730 public static final int FLAG_OR_STOPPED = 1 << 0; 3731 /** {@hide} */ 3732 public static final int FLAG_AND_LOCKED = 1 << 1; 3733 /** {@hide} */ 3734 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3735 /** {@hide} */ 3736 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3737 3738 /** 3739 * Return whether the given user is actively running. This means that 3740 * the user is in the "started" state, not "stopped" -- it is currently 3741 * allowed to run code through scheduled alarms, receiving broadcasts, 3742 * etc. A started user may be either the current foreground user or a 3743 * background user; the result here does not distinguish between the two. 3744 * @param userId the user's id. Zero indicates the default user. 3745 * @hide 3746 */ 3747 public boolean isUserRunning(int userId) { 3748 try { 3749 return getService().isUserRunning(userId, 0); 3750 } catch (RemoteException e) { 3751 throw e.rethrowFromSystemServer(); 3752 } 3753 } 3754 3755 /** {@hide} */ 3756 public boolean isVrModePackageEnabled(ComponentName component) { 3757 try { 3758 return getService().isVrModePackageEnabled(component); 3759 } catch (RemoteException e) { 3760 throw e.rethrowFromSystemServer(); 3761 } 3762 } 3763 3764 /** 3765 * Perform a system dump of various state associated with the given application 3766 * package name. This call blocks while the dump is being performed, so should 3767 * not be done on a UI thread. The data will be written to the given file 3768 * descriptor as text. 3769 * @param fd The file descriptor that the dump should be written to. The file 3770 * descriptor is <em>not</em> closed by this function; the caller continues to 3771 * own it. 3772 * @param packageName The name of the package that is to be dumped. 3773 */ 3774 @RequiresPermission(Manifest.permission.DUMP) 3775 public void dumpPackageState(FileDescriptor fd, String packageName) { 3776 dumpPackageStateStatic(fd, packageName); 3777 } 3778 3779 /** 3780 * @hide 3781 */ 3782 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3783 FileOutputStream fout = new FileOutputStream(fd); 3784 PrintWriter pw = new FastPrintWriter(fout); 3785 dumpService(pw, fd, "package", new String[] { packageName }); 3786 pw.println(); 3787 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3788 "-a", "package", packageName }); 3789 pw.println(); 3790 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3791 pw.println(); 3792 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3793 pw.println(); 3794 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3795 pw.println(); 3796 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3797 pw.flush(); 3798 } 3799 3800 /** 3801 * @hide 3802 */ 3803 public static boolean isSystemReady() { 3804 if (!sSystemReady) { 3805 if (ActivityThread.isSystem()) { 3806 sSystemReady = 3807 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3808 } else { 3809 // Since this is being called from outside system server, system should be 3810 // ready by now. 3811 sSystemReady = true; 3812 } 3813 } 3814 return sSystemReady; 3815 } 3816 3817 /** 3818 * @hide 3819 */ 3820 public static void broadcastStickyIntent(Intent intent, int userId) { 3821 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3822 } 3823 3824 /** 3825 * Convenience for sending a sticky broadcast. For internal use only. 3826 * 3827 * @hide 3828 */ 3829 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3830 try { 3831 getService().broadcastIntent( 3832 null, intent, null, null, Activity.RESULT_OK, null, null, 3833 null /*permission*/, appOp, null, false, true, userId); 3834 } catch (RemoteException ex) { 3835 } 3836 } 3837 3838 /** 3839 * @hide 3840 */ 3841 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3842 String tag) { 3843 try { 3844 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3845 sourceUid, sourcePkg, tag); 3846 } catch (RemoteException ex) { 3847 } 3848 } 3849 3850 /** 3851 * @hide 3852 */ 3853 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3854 try { 3855 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3856 } catch (RemoteException ex) { 3857 } 3858 } 3859 3860 /** 3861 * @hide 3862 */ 3863 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3864 try { 3865 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3866 } catch (RemoteException ex) { 3867 } 3868 } 3869 3870 /** 3871 * @hide 3872 */ 3873 public static IActivityManager getService() { 3874 return IActivityManagerSingleton.get(); 3875 } 3876 3877 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3878 new Singleton<IActivityManager>() { 3879 @Override 3880 protected IActivityManager create() { 3881 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3882 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3883 return am; 3884 } 3885 }; 3886 3887 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3888 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3889 IBinder service = ServiceManager.checkService(name); 3890 if (service == null) { 3891 pw.println(" (Service not found)"); 3892 return; 3893 } 3894 TransferPipe tp = null; 3895 try { 3896 pw.flush(); 3897 tp = new TransferPipe(); 3898 tp.setBufferPrefix(" "); 3899 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3900 tp.go(fd, 10000); 3901 } catch (Throwable e) { 3902 if (tp != null) { 3903 tp.kill(); 3904 } 3905 pw.println("Failure dumping service:"); 3906 e.printStackTrace(pw); 3907 } 3908 } 3909 3910 /** 3911 * Request that the system start watching for the calling process to exceed a pss 3912 * size as given here. Once called, the system will look for any occasions where it 3913 * sees the associated process with a larger pss size and, when this happens, automatically 3914 * pull a heap dump from it and allow the user to share the data. Note that this request 3915 * continues running even if the process is killed and restarted. To remove the watch, 3916 * use {@link #clearWatchHeapLimit()}. 3917 * 3918 * <p>This API only work if the calling process has been marked as 3919 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3920 * (userdebug or eng) build.</p> 3921 * 3922 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3923 * handle heap limit reports themselves.</p> 3924 * 3925 * @param pssSize The size in bytes to set the limit at. 3926 */ 3927 public void setWatchHeapLimit(long pssSize) { 3928 try { 3929 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3930 mContext.getPackageName()); 3931 } catch (RemoteException e) { 3932 throw e.rethrowFromSystemServer(); 3933 } 3934 } 3935 3936 /** 3937 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3938 * If your package has an activity handling this action, it will be launched with the 3939 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3940 * match the activty must support this action and a MIME type of "*/*". 3941 */ 3942 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3943 3944 /** 3945 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3946 */ 3947 public void clearWatchHeapLimit() { 3948 try { 3949 getService().setDumpHeapDebugLimit(null, 0, 0, null); 3950 } catch (RemoteException e) { 3951 throw e.rethrowFromSystemServer(); 3952 } 3953 } 3954 3955 /** 3956 * Return whether currently in lock task mode. When in this mode 3957 * no new tasks can be created or switched to. 3958 * 3959 * @see Activity#startLockTask() 3960 * 3961 * @deprecated Use {@link #getLockTaskModeState} instead. 3962 */ 3963 @Deprecated 3964 public boolean isInLockTaskMode() { 3965 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3966 } 3967 3968 /** 3969 * Return the current state of task locking. The three possible outcomes 3970 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3971 * and {@link #LOCK_TASK_MODE_PINNED}. 3972 * 3973 * @see Activity#startLockTask() 3974 */ 3975 public int getLockTaskModeState() { 3976 try { 3977 return getService().getLockTaskModeState(); 3978 } catch (RemoteException e) { 3979 throw e.rethrowFromSystemServer(); 3980 } 3981 } 3982 3983 /** 3984 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 3985 * thread can be a VR thread in a process at a time, and that thread may be subject to 3986 * restrictions on the amount of time it can run. 3987 * 3988 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 3989 * method will return to normal operation, and calling this method will do nothing while 3990 * persistent VR mode is enabled. 3991 * 3992 * To reset the VR thread for an application, a tid of 0 can be passed. 3993 * 3994 * @see android.os.Process#myTid() 3995 * @param tid tid of the VR thread 3996 */ 3997 public static void setVrThread(int tid) { 3998 try { 3999 getService().setVrThread(tid); 4000 } catch (RemoteException e) { 4001 // pass 4002 } 4003 } 4004 4005 /** 4006 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4007 * beyond a single process. Only one thread can be a 4008 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4009 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4010 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4011 * persistent VR thread loses its new scheduling priority; this method must be called again to 4012 * set the persistent thread. 4013 * 4014 * To reset the persistent VR thread, a tid of 0 can be passed. 4015 * 4016 * @see android.os.Process#myTid() 4017 * @param tid tid of the VR thread 4018 * @hide 4019 */ 4020 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4021 public static void setPersistentVrThread(int tid) { 4022 try { 4023 getService().setPersistentVrThread(tid); 4024 } catch (RemoteException e) { 4025 // pass 4026 } 4027 } 4028 4029 /** 4030 * The AppTask allows you to manage your own application's tasks. 4031 * See {@link android.app.ActivityManager#getAppTasks()} 4032 */ 4033 public static class AppTask { 4034 private IAppTask mAppTaskImpl; 4035 4036 /** @hide */ 4037 public AppTask(IAppTask task) { 4038 mAppTaskImpl = task; 4039 } 4040 4041 /** 4042 * Finishes all activities in this task and removes it from the recent tasks list. 4043 */ 4044 public void finishAndRemoveTask() { 4045 try { 4046 mAppTaskImpl.finishAndRemoveTask(); 4047 } catch (RemoteException e) { 4048 throw e.rethrowFromSystemServer(); 4049 } 4050 } 4051 4052 /** 4053 * Get the RecentTaskInfo associated with this task. 4054 * 4055 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4056 */ 4057 public RecentTaskInfo getTaskInfo() { 4058 try { 4059 return mAppTaskImpl.getTaskInfo(); 4060 } catch (RemoteException e) { 4061 throw e.rethrowFromSystemServer(); 4062 } 4063 } 4064 4065 /** 4066 * Bring this task to the foreground. If it contains activities, they will be 4067 * brought to the foreground with it and their instances re-created if needed. 4068 * If it doesn't contain activities, the root activity of the task will be 4069 * re-launched. 4070 */ 4071 public void moveToFront() { 4072 try { 4073 mAppTaskImpl.moveToFront(); 4074 } catch (RemoteException e) { 4075 throw e.rethrowFromSystemServer(); 4076 } 4077 } 4078 4079 /** 4080 * Start an activity in this task. Brings the task to the foreground. If this task 4081 * is not currently active (that is, its id < 0), then a new activity for the given 4082 * Intent will be launched as the root of the task and the task brought to the 4083 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4084 * an activity to launch in a new task, then a new activity for the given Intent will 4085 * be launched on top of the task and the task brought to the foreground. If this 4086 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4087 * or would otherwise be launched in to a new task, then the activity not launched but 4088 * this task be brought to the foreground and a new intent delivered to the top 4089 * activity if appropriate. 4090 * 4091 * <p>In other words, you generally want to use an Intent here that does not specify 4092 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4093 * and let the system do the right thing.</p> 4094 * 4095 * @param intent The Intent describing the new activity to be launched on the task. 4096 * @param options Optional launch options. 4097 * 4098 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4099 */ 4100 public void startActivity(Context context, Intent intent, Bundle options) { 4101 ActivityThread thread = ActivityThread.currentActivityThread(); 4102 thread.getInstrumentation().execStartActivityFromAppTask(context, 4103 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4104 } 4105 4106 /** 4107 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4108 * Intent of this AppTask. 4109 * 4110 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4111 * be set; otherwise, it will be cleared. 4112 */ 4113 public void setExcludeFromRecents(boolean exclude) { 4114 try { 4115 mAppTaskImpl.setExcludeFromRecents(exclude); 4116 } catch (RemoteException e) { 4117 throw e.rethrowFromSystemServer(); 4118 } 4119 } 4120 } 4121} 4122