ActivityManager.java revision 44f036fd5a5ea3253f8df979898f720edbc1af82
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 static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM; 20import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN; 21import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED; 22import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY; 23import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; 24import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED; 25 26import android.Manifest; 27import android.annotation.IntDef; 28import android.annotation.NonNull; 29import android.annotation.Nullable; 30import android.annotation.RequiresPermission; 31import android.annotation.SystemApi; 32import android.annotation.SystemService; 33import android.annotation.TestApi; 34import android.content.ComponentName; 35import android.content.Context; 36import android.content.Intent; 37import android.content.UriPermission; 38import android.content.pm.ActivityInfo; 39import android.content.pm.ApplicationInfo; 40import android.content.pm.ConfigurationInfo; 41import android.content.pm.IPackageDataObserver; 42import android.content.pm.PackageManager; 43import android.content.pm.ParceledListSlice; 44import android.content.pm.UserInfo; 45import android.content.res.Configuration; 46import android.content.res.Resources; 47import android.graphics.Bitmap; 48import android.graphics.Canvas; 49import android.graphics.Color; 50import android.graphics.GraphicBuffer; 51import android.graphics.Matrix; 52import android.graphics.Point; 53import android.graphics.Rect; 54import android.os.BatteryStats; 55import android.os.Build; 56import android.os.Build.VERSION_CODES; 57import android.os.Bundle; 58import android.os.Debug; 59import android.os.Handler; 60import android.os.IBinder; 61import android.os.Parcel; 62import android.os.Parcelable; 63import android.os.Process; 64import android.os.RemoteException; 65import android.os.ServiceManager; 66import android.os.SystemProperties; 67import android.os.UserHandle; 68import android.text.TextUtils; 69import android.util.ArrayMap; 70import android.util.DisplayMetrics; 71import android.util.Singleton; 72import android.util.Size; 73 74import com.android.internal.app.procstats.ProcessStats; 75import com.android.internal.os.RoSystemProperties; 76import com.android.internal.os.TransferPipe; 77import com.android.internal.util.FastPrintWriter; 78import com.android.server.LocalServices; 79 80import org.xmlpull.v1.XmlSerializer; 81 82import java.io.FileDescriptor; 83import java.io.FileOutputStream; 84import java.io.IOException; 85import java.io.PrintWriter; 86import java.lang.annotation.Retention; 87import java.lang.annotation.RetentionPolicy; 88import java.util.ArrayList; 89import java.util.List; 90 91/** 92 * <p> 93 * This class gives information about, and interacts 94 * with, activities, services, and the containing 95 * process. 96 * </p> 97 * 98 * <p> 99 * A number of the methods in this class are for 100 * debugging or informational purposes and they should 101 * not be used to affect any runtime behavior of 102 * your app. These methods are called out as such in 103 * the method level documentation. 104 * </p> 105 * 106 *<p> 107 * Most application developers should not have the need to 108 * use this class, most of whose methods are for specialized 109 * use cases. However, a few methods are more broadly applicable. 110 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 111 * enables your app to detect whether it is running on a low-memory device, 112 * and behave accordingly. 113 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 114 * is for apps with reset-data functionality. 115 * </p> 116 * 117 * <p> 118 * In some special use cases, where an app interacts with 119 * its Task stack, the app may use the 120 * {@link android.app.ActivityManager.AppTask} and 121 * {@link android.app.ActivityManager.RecentTaskInfo} inner 122 * classes. However, in general, the methods in this class should 123 * be used for testing and debugging purposes only. 124 * </p> 125 */ 126@SystemService(Context.ACTIVITY_SERVICE) 127public class ActivityManager { 128 private static String TAG = "ActivityManager"; 129 130 private static int gMaxRecentTasks = -1; 131 132 private final Context mContext; 133 134 private static volatile boolean sSystemReady = false; 135 136 137 private static final int FIRST_START_FATAL_ERROR_CODE = -100; 138 private static final int LAST_START_FATAL_ERROR_CODE = -1; 139 private static final int FIRST_START_SUCCESS_CODE = 0; 140 private static final int LAST_START_SUCCESS_CODE = 99; 141 private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; 142 private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; 143 144 static final class UidObserver extends IUidObserver.Stub { 145 final OnUidImportanceListener mListener; 146 final Context mContext; 147 148 UidObserver(OnUidImportanceListener listener, Context clientContext) { 149 mListener = listener; 150 mContext = clientContext; 151 } 152 153 @Override 154 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 155 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 156 procState, mContext)); 157 } 158 159 @Override 160 public void onUidGone(int uid, boolean disabled) { 161 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 162 } 163 164 @Override 165 public void onUidActive(int uid) { 166 } 167 168 @Override 169 public void onUidIdle(int uid, boolean disabled) { 170 } 171 172 @Override public void onUidCachedChanged(int uid, boolean cached) { 173 } 174 } 175 176 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 177 178 /** 179 * Defines acceptable types of bugreports. 180 * @hide 181 */ 182 @Retention(RetentionPolicy.SOURCE) 183 @IntDef({ 184 BUGREPORT_OPTION_FULL, 185 BUGREPORT_OPTION_INTERACTIVE, 186 BUGREPORT_OPTION_REMOTE, 187 BUGREPORT_OPTION_WEAR, 188 BUGREPORT_OPTION_TELEPHONY 189 }) 190 public @interface BugreportMode {} 191 /** 192 * Takes a bugreport without user interference (and hence causing less 193 * interference to the system), but includes all sections. 194 * @hide 195 */ 196 public static final int BUGREPORT_OPTION_FULL = 0; 197 /** 198 * Allows user to monitor progress and enter additional data; might not include all 199 * sections. 200 * @hide 201 */ 202 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 203 /** 204 * Takes a bugreport requested remotely by administrator of the Device Owner app, 205 * not the device's user. 206 * @hide 207 */ 208 public static final int BUGREPORT_OPTION_REMOTE = 2; 209 /** 210 * Takes a bugreport on a wearable device. 211 * @hide 212 */ 213 public static final int BUGREPORT_OPTION_WEAR = 3; 214 215 /** 216 * Takes a lightweight version of bugreport that only includes a few, urgent sections 217 * used to report telephony bugs. 218 * @hide 219 */ 220 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 221 222 /** 223 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 224 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 225 * uninstalled in lieu of the declaring one. The package named here must be 226 * signed with the same certificate as the one declaring the {@code <meta-data>}. 227 */ 228 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 229 230 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 231 // result is properly categorized. 232 233 /** 234 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 235 * @hide 236 */ 237 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 238 239 /** 240 * Result for IActivityManager.startVoiceActivity: active session does not match 241 * the requesting token. 242 * @hide 243 */ 244 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 245 246 /** 247 * Result for IActivityManager.startActivity: trying to start a background user 248 * activity that shouldn't be displayed for all users. 249 * @hide 250 */ 251 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 252 253 /** 254 * Result for IActivityManager.startActivity: trying to start an activity under voice 255 * control when that activity does not support the VOICE category. 256 * @hide 257 */ 258 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 259 260 /** 261 * Result for IActivityManager.startActivity: an error where the 262 * start had to be canceled. 263 * @hide 264 */ 265 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 266 267 /** 268 * Result for IActivityManager.startActivity: an error where the 269 * thing being started is not an activity. 270 * @hide 271 */ 272 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 273 274 /** 275 * Result for IActivityManager.startActivity: an error where the 276 * caller does not have permission to start the activity. 277 * @hide 278 */ 279 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 280 281 /** 282 * Result for IActivityManager.startActivity: an error where the 283 * caller has requested both to forward a result and to receive 284 * a result. 285 * @hide 286 */ 287 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 288 289 /** 290 * Result for IActivityManager.startActivity: an error where the 291 * requested class is not found. 292 * @hide 293 */ 294 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 295 296 /** 297 * Result for IActivityManager.startActivity: an error where the 298 * given Intent could not be resolved to an activity. 299 * @hide 300 */ 301 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 302 303 /** 304 * Result for IActivityManager.startAssistantActivity: active session is currently hidden. 305 * @hide 306 */ 307 public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; 308 309 /** 310 * Result for IActivityManager.startAssistantActivity: active session does not match 311 * the requesting token. 312 * @hide 313 */ 314 public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; 315 316 /** 317 * Result for IActivityManaqer.startActivity: the activity was started 318 * successfully as normal. 319 * @hide 320 */ 321 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 322 323 /** 324 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 325 * be executed if it is the recipient, and that is indeed the case. 326 * @hide 327 */ 328 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 329 330 /** 331 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 332 * a task was simply brought to the foreground. 333 * @hide 334 */ 335 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 336 337 /** 338 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 339 * the given Intent was given to the existing top activity. 340 * @hide 341 */ 342 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 343 344 /** 345 * Result for IActivityManaqer.startActivity: request was canceled because 346 * app switches are temporarily canceled to ensure the user's last request 347 * (such as pressing home) is performed. 348 * @hide 349 */ 350 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 351 352 /** 353 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 354 * while in Lock Task Mode. 355 * @hide 356 */ 357 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 358 FIRST_START_NON_FATAL_ERROR_CODE + 1; 359 360 /** 361 * Result for IActivityManaqer.startActivity: a new activity start was aborted. Never returned 362 * externally. 363 * @hide 364 */ 365 public static final int START_ABORTED = FIRST_START_NON_FATAL_ERROR_CODE + 2; 366 367 /** 368 * Flag for IActivityManaqer.startActivity: do special start mode where 369 * a new activity is launched only if it is needed. 370 * @hide 371 */ 372 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 373 374 /** 375 * Flag for IActivityManaqer.startActivity: launch the app for 376 * debugging. 377 * @hide 378 */ 379 public static final int START_FLAG_DEBUG = 1<<1; 380 381 /** 382 * Flag for IActivityManaqer.startActivity: launch the app for 383 * allocation tracking. 384 * @hide 385 */ 386 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 387 388 /** 389 * Flag for IActivityManaqer.startActivity: launch the app with 390 * native debugging support. 391 * @hide 392 */ 393 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 394 395 /** 396 * Result for IActivityManaqer.broadcastIntent: success! 397 * @hide 398 */ 399 public static final int BROADCAST_SUCCESS = 0; 400 401 /** 402 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 403 * a sticky intent without appropriate permission. 404 * @hide 405 */ 406 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 407 408 /** 409 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 410 * to a stopped user. Fail. 411 * @hide 412 */ 413 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 414 415 /** 416 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 417 * for a sendBroadcast operation. 418 * @hide 419 */ 420 public static final int INTENT_SENDER_BROADCAST = 1; 421 422 /** 423 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 424 * for a startActivity operation. 425 * @hide 426 */ 427 public static final int INTENT_SENDER_ACTIVITY = 2; 428 429 /** 430 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 431 * for an activity result operation. 432 * @hide 433 */ 434 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 435 436 /** 437 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 438 * for a startService operation. 439 * @hide 440 */ 441 public static final int INTENT_SENDER_SERVICE = 4; 442 443 /** 444 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 445 * for a startForegroundService operation. 446 * @hide 447 */ 448 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 449 450 /** @hide User operation call: success! */ 451 public static final int USER_OP_SUCCESS = 0; 452 453 /** @hide User operation call: given user id is not known. */ 454 public static final int USER_OP_UNKNOWN_USER = -1; 455 456 /** @hide User operation call: given user id is the current user, can't be stopped. */ 457 public static final int USER_OP_IS_CURRENT = -2; 458 459 /** @hide User operation call: system user can't be stopped. */ 460 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 461 462 /** @hide User operation call: one of related users cannot be stopped. */ 463 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 464 465 /** @hide Not a real process state. */ 466 public static final int PROCESS_STATE_UNKNOWN = -1; 467 468 /** @hide Process is a persistent system process. */ 469 public static final int PROCESS_STATE_PERSISTENT = 0; 470 471 /** @hide Process is a persistent system process and is doing UI. */ 472 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 473 474 /** @hide Process is hosting the current top activities. Note that this covers 475 * all activities that are visible to the user. */ 476 public static final int PROCESS_STATE_TOP = 2; 477 478 /** @hide Process is hosting a foreground service due to a system binding. */ 479 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 480 481 /** @hide Process is hosting a foreground service. */ 482 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 483 484 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 485 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 486 487 /** @hide Process is important to the user, and something they are aware of. */ 488 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 489 490 /** @hide Process is important to the user, but not something they are aware of. */ 491 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 492 493 /** @hide Process is in the background transient so we will try to keep running. */ 494 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 495 496 /** @hide Process is in the background running a backup/restore operation. */ 497 public static final int PROCESS_STATE_BACKUP = 9; 498 499 /** @hide Process is in the background, but it can't restore its state so we want 500 * to try to avoid killing it. */ 501 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 502 503 /** @hide Process is in the background running a service. Unlike oom_adj, this level 504 * is used for both the normal running in background state and the executing 505 * operations state. */ 506 public static final int PROCESS_STATE_SERVICE = 11; 507 508 /** @hide Process is in the background running a receiver. Note that from the 509 * perspective of oom_adj receivers run at a higher foreground level, but for our 510 * prioritization here that is not necessary and putting them below services means 511 * many fewer changes in some process states as they receive broadcasts. */ 512 public static final int PROCESS_STATE_RECEIVER = 12; 513 514 /** @hide Process is in the background but hosts the home activity. */ 515 public static final int PROCESS_STATE_HOME = 13; 516 517 /** @hide Process is in the background but hosts the last shown activity. */ 518 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 519 520 /** @hide Process is being cached for later use and contains activities. */ 521 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 522 523 /** @hide Process is being cached for later use and is a client of another cached 524 * process that contains activities. */ 525 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 526 527 /** @hide Process is being cached for later use and is empty. */ 528 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 529 530 /** @hide Process does not exist. */ 531 public static final int PROCESS_STATE_NONEXISTENT = 18; 532 533 /** @hide The lowest process state number */ 534 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 535 536 /** @hide The highest process state number */ 537 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 538 539 /** @hide Should this process state be considered a background state? */ 540 public static final boolean isProcStateBackground(int procState) { 541 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 542 } 543 544 /** @hide requestType for assist context: only basic information. */ 545 public static final int ASSIST_CONTEXT_BASIC = 0; 546 547 /** @hide requestType for assist context: generate full AssistStructure. */ 548 public static final int ASSIST_CONTEXT_FULL = 1; 549 550 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 551 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 552 553 /** @hide Flag for registerUidObserver: report changes in process state. */ 554 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 555 556 /** @hide Flag for registerUidObserver: report uid gone. */ 557 public static final int UID_OBSERVER_GONE = 1<<1; 558 559 /** @hide Flag for registerUidObserver: report uid has become idle. */ 560 public static final int UID_OBSERVER_IDLE = 1<<2; 561 562 /** @hide Flag for registerUidObserver: report uid has become active. */ 563 public static final int UID_OBSERVER_ACTIVE = 1<<3; 564 565 /** @hide Flag for registerUidObserver: report uid cached state has changed. */ 566 public static final int UID_OBSERVER_CACHED = 1<<4; 567 568 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 569 public static final int APP_START_MODE_NORMAL = 0; 570 571 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 572 public static final int APP_START_MODE_DELAYED = 1; 573 574 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 575 * rigid errors (throwing exception). */ 576 public static final int APP_START_MODE_DELAYED_RIGID = 2; 577 578 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 579 * launches; this is the mode for ephemeral apps. */ 580 public static final int APP_START_MODE_DISABLED = 3; 581 582 /** 583 * Lock task mode is not active. 584 */ 585 public static final int LOCK_TASK_MODE_NONE = 0; 586 587 /** 588 * Full lock task mode is active. 589 */ 590 public static final int LOCK_TASK_MODE_LOCKED = 1; 591 592 /** 593 * App pinning mode is active. 594 */ 595 public static final int LOCK_TASK_MODE_PINNED = 2; 596 597 Point mAppTaskThumbnailSize; 598 599 /*package*/ ActivityManager(Context context, Handler handler) { 600 mContext = context; 601 } 602 603 /** 604 * Returns whether the launch was successful. 605 * @hide 606 */ 607 public static final boolean isStartResultSuccessful(int result) { 608 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 609 } 610 611 /** 612 * Returns whether the launch result was a fatal error. 613 * @hide 614 */ 615 public static final boolean isStartResultFatalError(int result) { 616 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 617 } 618 619 /** 620 * Screen compatibility mode: the application most always run in 621 * compatibility mode. 622 * @hide 623 */ 624 public static final int COMPAT_MODE_ALWAYS = -1; 625 626 /** 627 * Screen compatibility mode: the application can never run in 628 * compatibility mode. 629 * @hide 630 */ 631 public static final int COMPAT_MODE_NEVER = -2; 632 633 /** 634 * Screen compatibility mode: unknown. 635 * @hide 636 */ 637 public static final int COMPAT_MODE_UNKNOWN = -3; 638 639 /** 640 * Screen compatibility mode: the application currently has compatibility 641 * mode disabled. 642 * @hide 643 */ 644 public static final int COMPAT_MODE_DISABLED = 0; 645 646 /** 647 * Screen compatibility mode: the application currently has compatibility 648 * mode enabled. 649 * @hide 650 */ 651 public static final int COMPAT_MODE_ENABLED = 1; 652 653 /** 654 * Screen compatibility mode: request to toggle the application's 655 * compatibility mode. 656 * @hide 657 */ 658 public static final int COMPAT_MODE_TOGGLE = 2; 659 660 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 661 SystemProperties.getBoolean("debug.force_low_ram", false); 662 663 /** @hide */ 664 @TestApi 665 public static class StackId { 666 667 private StackId() { 668 } 669 670 /** Invalid stack ID. */ 671 public static final int INVALID_STACK_ID = -1; 672 673 } 674 675 /** 676 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 677 * specifies the position of the created docked stack at the top half of the screen if 678 * in portrait mode or at the left half of the screen if in landscape mode. 679 * @hide 680 */ 681 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 682 683 /** 684 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 685 * specifies the position of the created docked stack at the bottom half of the screen if 686 * in portrait mode or at the right half of the screen if in landscape mode. 687 * @hide 688 */ 689 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 690 691 /** 692 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 693 * that the resize doesn't need to preserve the window, and can be skipped if bounds 694 * is unchanged. This mode is used by window manager in most cases. 695 * @hide 696 */ 697 public static final int RESIZE_MODE_SYSTEM = 0; 698 699 /** 700 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 701 * that the resize should preserve the window if possible. 702 * @hide 703 */ 704 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 705 706 /** 707 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 708 * that the resize should be performed even if the bounds appears unchanged. 709 * @hide 710 */ 711 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 712 713 /** 714 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 715 * manager during a screen rotation. 716 * @hide 717 */ 718 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 719 720 /** 721 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 722 * resize is due to a drag action. 723 * @hide 724 */ 725 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 726 727 /** 728 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 729 * that the resize should preserve the window if possible, and should not be skipped 730 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 731 * is ending. 732 * @hide 733 */ 734 public static final int RESIZE_MODE_USER_FORCED = 735 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 736 737 /** @hide */ 738 public int getFrontActivityScreenCompatMode() { 739 try { 740 return getService().getFrontActivityScreenCompatMode(); 741 } catch (RemoteException e) { 742 throw e.rethrowFromSystemServer(); 743 } 744 } 745 746 /** @hide */ 747 public void setFrontActivityScreenCompatMode(int mode) { 748 try { 749 getService().setFrontActivityScreenCompatMode(mode); 750 } catch (RemoteException e) { 751 throw e.rethrowFromSystemServer(); 752 } 753 } 754 755 /** @hide */ 756 public int getPackageScreenCompatMode(String packageName) { 757 try { 758 return getService().getPackageScreenCompatMode(packageName); 759 } catch (RemoteException e) { 760 throw e.rethrowFromSystemServer(); 761 } 762 } 763 764 /** @hide */ 765 public void setPackageScreenCompatMode(String packageName, int mode) { 766 try { 767 getService().setPackageScreenCompatMode(packageName, mode); 768 } catch (RemoteException e) { 769 throw e.rethrowFromSystemServer(); 770 } 771 } 772 773 /** @hide */ 774 public boolean getPackageAskScreenCompat(String packageName) { 775 try { 776 return getService().getPackageAskScreenCompat(packageName); 777 } catch (RemoteException e) { 778 throw e.rethrowFromSystemServer(); 779 } 780 } 781 782 /** @hide */ 783 public void setPackageAskScreenCompat(String packageName, boolean ask) { 784 try { 785 getService().setPackageAskScreenCompat(packageName, ask); 786 } catch (RemoteException e) { 787 throw e.rethrowFromSystemServer(); 788 } 789 } 790 791 /** 792 * Return the approximate per-application memory class of the current 793 * device. This gives you an idea of how hard a memory limit you should 794 * impose on your application to let the overall system work best. The 795 * returned value is in megabytes; the baseline Android memory class is 796 * 16 (which happens to be the Java heap limit of those devices); some 797 * device with more memory may return 24 or even higher numbers. 798 */ 799 public int getMemoryClass() { 800 return staticGetMemoryClass(); 801 } 802 803 /** @hide */ 804 static public int staticGetMemoryClass() { 805 // Really brain dead right now -- just take this from the configured 806 // vm heap size, and assume it is in megabytes and thus ends with "m". 807 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 808 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 809 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 810 } 811 return staticGetLargeMemoryClass(); 812 } 813 814 /** 815 * Return the approximate per-application memory class of the current 816 * device when an application is running with a large heap. This is the 817 * space available for memory-intensive applications; most applications 818 * should not need this amount of memory, and should instead stay with the 819 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 820 * This may be the same size as {@link #getMemoryClass()} on memory 821 * constrained devices, or it may be significantly larger on devices with 822 * a large amount of available RAM. 823 * 824 * <p>The is the size of the application's Dalvik heap if it has 825 * specified <code>android:largeHeap="true"</code> in its manifest. 826 */ 827 public int getLargeMemoryClass() { 828 return staticGetLargeMemoryClass(); 829 } 830 831 /** @hide */ 832 static public int staticGetLargeMemoryClass() { 833 // Really brain dead right now -- just take this from the configured 834 // vm heap size, and assume it is in megabytes and thus ends with "m". 835 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 836 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 837 } 838 839 /** 840 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 841 * is ultimately up to the device configuration, but currently it generally means 842 * something in the class of a 512MB device with about a 800x480 or less screen. 843 * This is mostly intended to be used by apps to determine whether they should turn 844 * off certain features that require more RAM. 845 */ 846 public boolean isLowRamDevice() { 847 return isLowRamDeviceStatic(); 848 } 849 850 /** @hide */ 851 public static boolean isLowRamDeviceStatic() { 852 return RoSystemProperties.CONFIG_LOW_RAM || 853 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 854 } 855 856 /** 857 * Returns true if this is a small battery device. Exactly whether a device is considered to be 858 * small battery is ultimately up to the device configuration, but currently it generally means 859 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 860 * to determine whether certain features should be altered to account for a drastically smaller 861 * battery. 862 * @hide 863 */ 864 public static boolean isSmallBatteryDevice() { 865 return RoSystemProperties.CONFIG_SMALL_BATTERY; 866 } 867 868 /** 869 * Used by persistent processes to determine if they are running on a 870 * higher-end device so should be okay using hardware drawing acceleration 871 * (which tends to consume a lot more RAM). 872 * @hide 873 */ 874 static public boolean isHighEndGfx() { 875 return !isLowRamDeviceStatic() && 876 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 877 } 878 879 /** 880 * Return the maximum number of recents entries that we will maintain and show. 881 * @hide 882 */ 883 static public int getMaxRecentTasksStatic() { 884 if (gMaxRecentTasks < 0) { 885 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 886 } 887 return gMaxRecentTasks; 888 } 889 890 /** 891 * Return the default limit on the number of recents that an app can make. 892 * @hide 893 */ 894 static public int getDefaultAppRecentsLimitStatic() { 895 return getMaxRecentTasksStatic() / 6; 896 } 897 898 /** 899 * Return the maximum limit on the number of recents that an app can make. 900 * @hide 901 */ 902 static public int getMaxAppRecentsLimitStatic() { 903 return getMaxRecentTasksStatic() / 2; 904 } 905 906 /** 907 * Returns true if the system supports at least one form of multi-window. 908 * E.g. freeform, split-screen, picture-in-picture. 909 * @hide 910 */ 911 @TestApi 912 static public boolean supportsMultiWindow(Context context) { 913 // On watches, multi-window is used to present essential system UI, and thus it must be 914 // supported regardless of device memory characteristics. 915 boolean isWatch = context.getPackageManager().hasSystemFeature( 916 PackageManager.FEATURE_WATCH); 917 return (!isLowRamDeviceStatic() || isWatch) 918 && Resources.getSystem().getBoolean( 919 com.android.internal.R.bool.config_supportsMultiWindow); 920 } 921 922 /** 923 * Returns true if the system supports split screen multi-window. 924 * @hide 925 */ 926 @TestApi 927 static public boolean supportsSplitScreenMultiWindow(Context context) { 928 return supportsMultiWindow(context) 929 && Resources.getSystem().getBoolean( 930 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 931 } 932 933 /** @removed */ 934 @Deprecated 935 public static int getMaxNumPictureInPictureActions() { 936 return 3; 937 } 938 939 /** 940 * Information you can set and retrieve about the current activity within the recent task list. 941 */ 942 public static class TaskDescription implements Parcelable { 943 /** @hide */ 944 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 945 private static final String ATTR_TASKDESCRIPTIONLABEL = 946 ATTR_TASKDESCRIPTION_PREFIX + "label"; 947 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 948 ATTR_TASKDESCRIPTION_PREFIX + "color"; 949 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 950 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 951 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 952 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 953 954 private String mLabel; 955 private Bitmap mIcon; 956 private String mIconFilename; 957 private int mColorPrimary; 958 private int mColorBackground; 959 private int mStatusBarColor; 960 private int mNavigationBarColor; 961 962 /** 963 * Creates the TaskDescription to the specified values. 964 * 965 * @param label A label and description of the current state of this task. 966 * @param icon An icon that represents the current state of this task. 967 * @param colorPrimary A color to override the theme's primary color. This color must be 968 * opaque. 969 */ 970 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 971 this(label, icon, null, colorPrimary, 0, 0, 0); 972 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 973 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 974 } 975 } 976 977 /** 978 * Creates the TaskDescription to the specified values. 979 * 980 * @param label A label and description of the current state of this activity. 981 * @param icon An icon that represents the current state of this activity. 982 */ 983 public TaskDescription(String label, Bitmap icon) { 984 this(label, icon, null, 0, 0, 0, 0); 985 } 986 987 /** 988 * Creates the TaskDescription to the specified values. 989 * 990 * @param label A label and description of the current state of this activity. 991 */ 992 public TaskDescription(String label) { 993 this(label, null, null, 0, 0, 0, 0); 994 } 995 996 /** 997 * Creates an empty TaskDescription. 998 */ 999 public TaskDescription() { 1000 this(null, null, null, 0, 0, 0, 0); 1001 } 1002 1003 /** @hide */ 1004 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1005 int colorBackground, int statusBarColor, int navigationBarColor) { 1006 mLabel = label; 1007 mIcon = icon; 1008 mIconFilename = iconFilename; 1009 mColorPrimary = colorPrimary; 1010 mColorBackground = colorBackground; 1011 mStatusBarColor = statusBarColor; 1012 mNavigationBarColor = navigationBarColor; 1013 } 1014 1015 /** 1016 * Creates a copy of another TaskDescription. 1017 */ 1018 public TaskDescription(TaskDescription td) { 1019 copyFrom(td); 1020 } 1021 1022 /** 1023 * Copies this the values from another TaskDescription. 1024 * @hide 1025 */ 1026 public void copyFrom(TaskDescription other) { 1027 mLabel = other.mLabel; 1028 mIcon = other.mIcon; 1029 mIconFilename = other.mIconFilename; 1030 mColorPrimary = other.mColorPrimary; 1031 mColorBackground = other.mColorBackground; 1032 mStatusBarColor = other.mStatusBarColor; 1033 mNavigationBarColor = other.mNavigationBarColor; 1034 } 1035 1036 /** 1037 * Copies this the values from another TaskDescription, but preserves the hidden fields 1038 * if they weren't set on {@code other} 1039 * @hide 1040 */ 1041 public void copyFromPreserveHiddenFields(TaskDescription other) { 1042 mLabel = other.mLabel; 1043 mIcon = other.mIcon; 1044 mIconFilename = other.mIconFilename; 1045 mColorPrimary = other.mColorPrimary; 1046 if (other.mColorBackground != 0) { 1047 mColorBackground = other.mColorBackground; 1048 } 1049 if (other.mStatusBarColor != 0) { 1050 mStatusBarColor = other.mStatusBarColor; 1051 } 1052 if (other.mNavigationBarColor != 0) { 1053 mNavigationBarColor = other.mNavigationBarColor; 1054 } 1055 } 1056 1057 private TaskDescription(Parcel source) { 1058 readFromParcel(source); 1059 } 1060 1061 /** 1062 * Sets the label for this task description. 1063 * @hide 1064 */ 1065 public void setLabel(String label) { 1066 mLabel = label; 1067 } 1068 1069 /** 1070 * Sets the primary color for this task description. 1071 * @hide 1072 */ 1073 public void setPrimaryColor(int primaryColor) { 1074 // Ensure that the given color is valid 1075 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1076 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1077 } 1078 mColorPrimary = primaryColor; 1079 } 1080 1081 /** 1082 * Sets the background color for this task description. 1083 * @hide 1084 */ 1085 public void setBackgroundColor(int backgroundColor) { 1086 // Ensure that the given color is valid 1087 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1088 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1089 } 1090 mColorBackground = backgroundColor; 1091 } 1092 1093 /** 1094 * @hide 1095 */ 1096 public void setStatusBarColor(int statusBarColor) { 1097 mStatusBarColor = statusBarColor; 1098 } 1099 1100 /** 1101 * @hide 1102 */ 1103 public void setNavigationBarColor(int navigationBarColor) { 1104 mNavigationBarColor = navigationBarColor; 1105 } 1106 1107 /** 1108 * Sets the icon for this task description. 1109 * @hide 1110 */ 1111 public void setIcon(Bitmap icon) { 1112 mIcon = icon; 1113 } 1114 1115 /** 1116 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1117 * bitmap. 1118 * @hide 1119 */ 1120 public void setIconFilename(String iconFilename) { 1121 mIconFilename = iconFilename; 1122 mIcon = null; 1123 } 1124 1125 /** 1126 * @return The label and description of the current state of this task. 1127 */ 1128 public String getLabel() { 1129 return mLabel; 1130 } 1131 1132 /** 1133 * @return The icon that represents the current state of this task. 1134 */ 1135 public Bitmap getIcon() { 1136 if (mIcon != null) { 1137 return mIcon; 1138 } 1139 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1140 } 1141 1142 /** @hide */ 1143 public String getIconFilename() { 1144 return mIconFilename; 1145 } 1146 1147 /** @hide */ 1148 public Bitmap getInMemoryIcon() { 1149 return mIcon; 1150 } 1151 1152 /** @hide */ 1153 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1154 if (iconFilename != null) { 1155 try { 1156 return getService().getTaskDescriptionIcon(iconFilename, 1157 userId); 1158 } catch (RemoteException e) { 1159 throw e.rethrowFromSystemServer(); 1160 } 1161 } 1162 return null; 1163 } 1164 1165 /** 1166 * @return The color override on the theme's primary color. 1167 */ 1168 public int getPrimaryColor() { 1169 return mColorPrimary; 1170 } 1171 1172 /** 1173 * @return The background color. 1174 * @hide 1175 */ 1176 public int getBackgroundColor() { 1177 return mColorBackground; 1178 } 1179 1180 /** 1181 * @hide 1182 */ 1183 public int getStatusBarColor() { 1184 return mStatusBarColor; 1185 } 1186 1187 /** 1188 * @hide 1189 */ 1190 public int getNavigationBarColor() { 1191 return mNavigationBarColor; 1192 } 1193 1194 /** @hide */ 1195 public void saveToXml(XmlSerializer out) throws IOException { 1196 if (mLabel != null) { 1197 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1198 } 1199 if (mColorPrimary != 0) { 1200 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1201 Integer.toHexString(mColorPrimary)); 1202 } 1203 if (mColorBackground != 0) { 1204 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1205 Integer.toHexString(mColorBackground)); 1206 } 1207 if (mIconFilename != null) { 1208 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1209 } 1210 } 1211 1212 /** @hide */ 1213 public void restoreFromXml(String attrName, String attrValue) { 1214 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1215 setLabel(attrValue); 1216 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1217 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1218 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1219 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1220 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1221 setIconFilename(attrValue); 1222 } 1223 } 1224 1225 @Override 1226 public int describeContents() { 1227 return 0; 1228 } 1229 1230 @Override 1231 public void writeToParcel(Parcel dest, int flags) { 1232 if (mLabel == null) { 1233 dest.writeInt(0); 1234 } else { 1235 dest.writeInt(1); 1236 dest.writeString(mLabel); 1237 } 1238 if (mIcon == null) { 1239 dest.writeInt(0); 1240 } else { 1241 dest.writeInt(1); 1242 mIcon.writeToParcel(dest, 0); 1243 } 1244 dest.writeInt(mColorPrimary); 1245 dest.writeInt(mColorBackground); 1246 dest.writeInt(mStatusBarColor); 1247 dest.writeInt(mNavigationBarColor); 1248 if (mIconFilename == null) { 1249 dest.writeInt(0); 1250 } else { 1251 dest.writeInt(1); 1252 dest.writeString(mIconFilename); 1253 } 1254 } 1255 1256 public void readFromParcel(Parcel source) { 1257 mLabel = source.readInt() > 0 ? source.readString() : null; 1258 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1259 mColorPrimary = source.readInt(); 1260 mColorBackground = source.readInt(); 1261 mStatusBarColor = source.readInt(); 1262 mNavigationBarColor = source.readInt(); 1263 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1264 } 1265 1266 public static final Creator<TaskDescription> CREATOR 1267 = new Creator<TaskDescription>() { 1268 public TaskDescription createFromParcel(Parcel source) { 1269 return new TaskDescription(source); 1270 } 1271 public TaskDescription[] newArray(int size) { 1272 return new TaskDescription[size]; 1273 } 1274 }; 1275 1276 @Override 1277 public String toString() { 1278 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1279 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1280 " colorBackground: " + mColorBackground + 1281 " statusBarColor: " + mColorBackground + 1282 " navigationBarColor: " + mNavigationBarColor; 1283 } 1284 } 1285 1286 /** 1287 * Information you can retrieve about tasks that the user has most recently 1288 * started or visited. 1289 */ 1290 public static class RecentTaskInfo implements Parcelable { 1291 /** 1292 * If this task is currently running, this is the identifier for it. 1293 * If it is not running, this will be -1. 1294 */ 1295 public int id; 1296 1297 /** 1298 * The true identifier of this task, valid even if it is not running. 1299 */ 1300 public int persistentId; 1301 1302 /** 1303 * The original Intent used to launch the task. You can use this 1304 * Intent to re-launch the task (if it is no longer running) or bring 1305 * the current task to the front. 1306 */ 1307 public Intent baseIntent; 1308 1309 /** 1310 * If this task was started from an alias, this is the actual 1311 * activity component that was initially started; the component of 1312 * the baseIntent in this case is the name of the actual activity 1313 * implementation that the alias referred to. Otherwise, this is null. 1314 */ 1315 public ComponentName origActivity; 1316 1317 /** 1318 * The actual activity component that started the task. 1319 * @hide 1320 */ 1321 @Nullable 1322 public ComponentName realActivity; 1323 1324 /** 1325 * Description of the task's last state. 1326 */ 1327 public CharSequence description; 1328 1329 /** 1330 * The id of the ActivityStack this Task was on most recently. 1331 * @hide 1332 */ 1333 public int stackId; 1334 1335 /** 1336 * The id of the user the task was running as. 1337 * @hide 1338 */ 1339 public int userId; 1340 1341 /** 1342 * The first time this task was active. 1343 * @hide 1344 */ 1345 public long firstActiveTime; 1346 1347 /** 1348 * The last time this task was active. 1349 * @hide 1350 */ 1351 public long lastActiveTime; 1352 1353 /** 1354 * The recent activity values for the highest activity in the stack to have set the values. 1355 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1356 */ 1357 public TaskDescription taskDescription; 1358 1359 /** 1360 * Task affiliation for grouping with other tasks. 1361 */ 1362 public int affiliatedTaskId; 1363 1364 /** 1365 * Task affiliation color of the source task with the affiliated task id. 1366 * 1367 * @hide 1368 */ 1369 public int affiliatedTaskColor; 1370 1371 /** 1372 * The component launched as the first activity in the task. 1373 * This can be considered the "application" of this task. 1374 */ 1375 public ComponentName baseActivity; 1376 1377 /** 1378 * The activity component at the top of the history stack of the task. 1379 * This is what the user is currently doing. 1380 */ 1381 public ComponentName topActivity; 1382 1383 /** 1384 * Number of activities in this task. 1385 */ 1386 public int numActivities; 1387 1388 /** 1389 * The bounds of the task. 1390 * @hide 1391 */ 1392 public Rect bounds; 1393 1394 /** 1395 * True if the task can go in the docked stack. 1396 * @hide 1397 */ 1398 public boolean supportsSplitScreenMultiWindow; 1399 1400 /** 1401 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1402 * @hide 1403 */ 1404 public int resizeMode; 1405 1406 /** 1407 * The current configuration this task is in. 1408 * @hide 1409 */ 1410 final public Configuration configuration = new Configuration(); 1411 1412 public RecentTaskInfo() { 1413 } 1414 1415 @Override 1416 public int describeContents() { 1417 return 0; 1418 } 1419 1420 @Override 1421 public void writeToParcel(Parcel dest, int flags) { 1422 dest.writeInt(id); 1423 dest.writeInt(persistentId); 1424 if (baseIntent != null) { 1425 dest.writeInt(1); 1426 baseIntent.writeToParcel(dest, 0); 1427 } else { 1428 dest.writeInt(0); 1429 } 1430 ComponentName.writeToParcel(origActivity, dest); 1431 ComponentName.writeToParcel(realActivity, dest); 1432 TextUtils.writeToParcel(description, dest, 1433 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1434 if (taskDescription != null) { 1435 dest.writeInt(1); 1436 taskDescription.writeToParcel(dest, 0); 1437 } else { 1438 dest.writeInt(0); 1439 } 1440 dest.writeInt(stackId); 1441 dest.writeInt(userId); 1442 dest.writeLong(firstActiveTime); 1443 dest.writeLong(lastActiveTime); 1444 dest.writeInt(affiliatedTaskId); 1445 dest.writeInt(affiliatedTaskColor); 1446 ComponentName.writeToParcel(baseActivity, dest); 1447 ComponentName.writeToParcel(topActivity, dest); 1448 dest.writeInt(numActivities); 1449 if (bounds != null) { 1450 dest.writeInt(1); 1451 bounds.writeToParcel(dest, 0); 1452 } else { 1453 dest.writeInt(0); 1454 } 1455 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1456 dest.writeInt(resizeMode); 1457 configuration.writeToParcel(dest, flags); 1458 } 1459 1460 public void readFromParcel(Parcel source) { 1461 id = source.readInt(); 1462 persistentId = source.readInt(); 1463 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1464 origActivity = ComponentName.readFromParcel(source); 1465 realActivity = ComponentName.readFromParcel(source); 1466 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1467 taskDescription = source.readInt() > 0 ? 1468 TaskDescription.CREATOR.createFromParcel(source) : null; 1469 stackId = source.readInt(); 1470 userId = source.readInt(); 1471 firstActiveTime = source.readLong(); 1472 lastActiveTime = source.readLong(); 1473 affiliatedTaskId = source.readInt(); 1474 affiliatedTaskColor = source.readInt(); 1475 baseActivity = ComponentName.readFromParcel(source); 1476 topActivity = ComponentName.readFromParcel(source); 1477 numActivities = source.readInt(); 1478 bounds = source.readInt() > 0 ? 1479 Rect.CREATOR.createFromParcel(source) : null; 1480 supportsSplitScreenMultiWindow = source.readInt() == 1; 1481 resizeMode = source.readInt(); 1482 configuration.readFromParcel(source); 1483 } 1484 1485 public static final Creator<RecentTaskInfo> CREATOR 1486 = new Creator<RecentTaskInfo>() { 1487 public RecentTaskInfo createFromParcel(Parcel source) { 1488 return new RecentTaskInfo(source); 1489 } 1490 public RecentTaskInfo[] newArray(int size) { 1491 return new RecentTaskInfo[size]; 1492 } 1493 }; 1494 1495 private RecentTaskInfo(Parcel source) { 1496 readFromParcel(source); 1497 } 1498 } 1499 1500 /** 1501 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1502 * that have set their 1503 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1504 */ 1505 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1506 1507 /** 1508 * Provides a list that does not contain any 1509 * recent tasks that currently are not available to the user. 1510 */ 1511 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1512 1513 /** 1514 * Provides a list that contains recent tasks for all 1515 * profiles of a user. 1516 * @hide 1517 */ 1518 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1519 1520 /** 1521 * Ignores all tasks that are on the home stack. 1522 * @hide 1523 */ 1524 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1525 1526 /** 1527 * Ignores the top task in the docked stack. 1528 * @hide 1529 */ 1530 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1531 1532 /** 1533 * Ignores all tasks that are on the pinned stack. 1534 * @hide 1535 */ 1536 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1537 1538 /** 1539 * <p></p>Return a list of the tasks that the user has recently launched, with 1540 * the most recent being first and older ones after in order. 1541 * 1542 * <p><b>Note: this method is only intended for debugging and presenting 1543 * task management user interfaces</b>. This should never be used for 1544 * core logic in an application, such as deciding between different 1545 * behaviors based on the information found here. Such uses are 1546 * <em>not</em> supported, and will likely break in the future. For 1547 * example, if multiple applications can be actively running at the 1548 * same time, assumptions made about the meaning of the data here for 1549 * purposes of control flow will be incorrect.</p> 1550 * 1551 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1552 * no longer available to third party applications: the introduction of 1553 * document-centric recents means 1554 * it can leak personal information to the caller. For backwards compatibility, 1555 * it will still return a small subset of its data: at least the caller's 1556 * own tasks (though see {@link #getAppTasks()} for the correct supported 1557 * way to retrieve that information), and possibly some other tasks 1558 * such as home that are known to not be sensitive. 1559 * 1560 * @param maxNum The maximum number of entries to return in the list. The 1561 * actual number returned may be smaller, depending on how many tasks the 1562 * user has started and the maximum number the system can remember. 1563 * @param flags Information about what to return. May be any combination 1564 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1565 * 1566 * @return Returns a list of RecentTaskInfo records describing each of 1567 * the recent tasks. 1568 */ 1569 @Deprecated 1570 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1571 throws SecurityException { 1572 try { 1573 return getService().getRecentTasks(maxNum, 1574 flags, UserHandle.myUserId()).getList(); 1575 } catch (RemoteException e) { 1576 throw e.rethrowFromSystemServer(); 1577 } 1578 } 1579 1580 /** 1581 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1582 * specific user. It requires holding 1583 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1584 * @param maxNum The maximum number of entries to return in the list. The 1585 * actual number returned may be smaller, depending on how many tasks the 1586 * user has started and the maximum number the system can remember. 1587 * @param flags Information about what to return. May be any combination 1588 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1589 * 1590 * @return Returns a list of RecentTaskInfo records describing each of 1591 * the recent tasks. Most recently activated tasks go first. 1592 * 1593 * @hide 1594 */ 1595 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1596 throws SecurityException { 1597 try { 1598 return getService().getRecentTasks(maxNum, 1599 flags, userId).getList(); 1600 } catch (RemoteException e) { 1601 throw e.rethrowFromSystemServer(); 1602 } 1603 } 1604 1605 /** 1606 * Information you can retrieve about a particular task that is currently 1607 * "running" in the system. Note that a running task does not mean the 1608 * given task actually has a process it is actively running in; it simply 1609 * means that the user has gone to it and never closed it, but currently 1610 * the system may have killed its process and is only holding on to its 1611 * last state in order to restart it when the user returns. 1612 */ 1613 public static class RunningTaskInfo implements Parcelable { 1614 /** 1615 * A unique identifier for this task. 1616 */ 1617 public int id; 1618 1619 /** 1620 * The stack that currently contains this task. 1621 * @hide 1622 */ 1623 public int stackId; 1624 1625 /** 1626 * The component launched as the first activity in the task. This can 1627 * be considered the "application" of this task. 1628 */ 1629 public ComponentName baseActivity; 1630 1631 /** 1632 * The activity component at the top of the history stack of the task. 1633 * This is what the user is currently doing. 1634 */ 1635 public ComponentName topActivity; 1636 1637 /** 1638 * Thumbnail representation of the task's current state. Currently 1639 * always null. 1640 */ 1641 public Bitmap thumbnail; 1642 1643 /** 1644 * Description of the task's current state. 1645 */ 1646 public CharSequence description; 1647 1648 /** 1649 * Number of activities in this task. 1650 */ 1651 public int numActivities; 1652 1653 /** 1654 * Number of activities that are currently running (not stopped 1655 * and persisted) in this task. 1656 */ 1657 public int numRunning; 1658 1659 /** 1660 * Last time task was run. For sorting. 1661 * @hide 1662 */ 1663 public long lastActiveTime; 1664 1665 /** 1666 * True if the task can go in the docked stack. 1667 * @hide 1668 */ 1669 public boolean supportsSplitScreenMultiWindow; 1670 1671 /** 1672 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1673 * @hide 1674 */ 1675 public int resizeMode; 1676 1677 /** 1678 * The full configuration the task is currently running in. 1679 * @hide 1680 */ 1681 final public Configuration configuration = new Configuration(); 1682 1683 public RunningTaskInfo() { 1684 } 1685 1686 public int describeContents() { 1687 return 0; 1688 } 1689 1690 public void writeToParcel(Parcel dest, int flags) { 1691 dest.writeInt(id); 1692 dest.writeInt(stackId); 1693 ComponentName.writeToParcel(baseActivity, dest); 1694 ComponentName.writeToParcel(topActivity, dest); 1695 if (thumbnail != null) { 1696 dest.writeInt(1); 1697 thumbnail.writeToParcel(dest, 0); 1698 } else { 1699 dest.writeInt(0); 1700 } 1701 TextUtils.writeToParcel(description, dest, 1702 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1703 dest.writeInt(numActivities); 1704 dest.writeInt(numRunning); 1705 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1706 dest.writeInt(resizeMode); 1707 configuration.writeToParcel(dest, flags); 1708 } 1709 1710 public void readFromParcel(Parcel source) { 1711 id = source.readInt(); 1712 stackId = source.readInt(); 1713 baseActivity = ComponentName.readFromParcel(source); 1714 topActivity = ComponentName.readFromParcel(source); 1715 if (source.readInt() != 0) { 1716 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1717 } else { 1718 thumbnail = null; 1719 } 1720 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1721 numActivities = source.readInt(); 1722 numRunning = source.readInt(); 1723 supportsSplitScreenMultiWindow = source.readInt() != 0; 1724 resizeMode = source.readInt(); 1725 configuration.readFromParcel(source); 1726 } 1727 1728 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1729 public RunningTaskInfo createFromParcel(Parcel source) { 1730 return new RunningTaskInfo(source); 1731 } 1732 public RunningTaskInfo[] newArray(int size) { 1733 return new RunningTaskInfo[size]; 1734 } 1735 }; 1736 1737 private RunningTaskInfo(Parcel source) { 1738 readFromParcel(source); 1739 } 1740 } 1741 1742 /** 1743 * Get the list of tasks associated with the calling application. 1744 * 1745 * @return The list of tasks associated with the application making this call. 1746 * @throws SecurityException 1747 */ 1748 public List<ActivityManager.AppTask> getAppTasks() { 1749 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1750 List<IBinder> appTasks; 1751 try { 1752 appTasks = getService().getAppTasks(mContext.getPackageName()); 1753 } catch (RemoteException e) { 1754 throw e.rethrowFromSystemServer(); 1755 } 1756 int numAppTasks = appTasks.size(); 1757 for (int i = 0; i < numAppTasks; i++) { 1758 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1759 } 1760 return tasks; 1761 } 1762 1763 /** 1764 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1765 * with {@link #addAppTask}. 1766 */ 1767 public Size getAppTaskThumbnailSize() { 1768 synchronized (this) { 1769 ensureAppTaskThumbnailSizeLocked(); 1770 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1771 } 1772 } 1773 1774 private void ensureAppTaskThumbnailSizeLocked() { 1775 if (mAppTaskThumbnailSize == null) { 1776 try { 1777 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1778 } catch (RemoteException e) { 1779 throw e.rethrowFromSystemServer(); 1780 } 1781 } 1782 } 1783 1784 /** 1785 * Add a new {@link AppTask} for the calling application. This will create a new 1786 * recents entry that is added to the <b>end</b> of all existing recents. 1787 * 1788 * @param activity The activity that is adding the entry. This is used to help determine 1789 * the context that the new recents entry will be in. 1790 * @param intent The Intent that describes the recents entry. This is the same Intent that 1791 * you would have used to launch the activity for it. In generally you will want to set 1792 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1793 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1794 * entry will exist without an activity, so it doesn't make sense to not retain it when 1795 * its activity disappears. The given Intent here also must have an explicit ComponentName 1796 * set on it. 1797 * @param description Optional additional description information. 1798 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1799 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1800 * recreated in your process, probably in a way you don't like, before the recents entry 1801 * is added. 1802 * 1803 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1804 * most likely cause of failure is that there is no more room for more tasks for your app. 1805 */ 1806 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1807 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1808 Point size; 1809 synchronized (this) { 1810 ensureAppTaskThumbnailSizeLocked(); 1811 size = mAppTaskThumbnailSize; 1812 } 1813 final int tw = thumbnail.getWidth(); 1814 final int th = thumbnail.getHeight(); 1815 if (tw != size.x || th != size.y) { 1816 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1817 1818 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1819 float scale; 1820 float dx = 0, dy = 0; 1821 if (tw * size.x > size.y * th) { 1822 scale = (float) size.x / (float) th; 1823 dx = (size.y - tw * scale) * 0.5f; 1824 } else { 1825 scale = (float) size.y / (float) tw; 1826 dy = (size.x - th * scale) * 0.5f; 1827 } 1828 Matrix matrix = new Matrix(); 1829 matrix.setScale(scale, scale); 1830 matrix.postTranslate((int) (dx + 0.5f), 0); 1831 1832 Canvas canvas = new Canvas(bm); 1833 canvas.drawBitmap(thumbnail, matrix, null); 1834 canvas.setBitmap(null); 1835 1836 thumbnail = bm; 1837 } 1838 if (description == null) { 1839 description = new TaskDescription(); 1840 } 1841 try { 1842 return getService().addAppTask(activity.getActivityToken(), 1843 intent, description, thumbnail); 1844 } catch (RemoteException e) { 1845 throw e.rethrowFromSystemServer(); 1846 } 1847 } 1848 1849 /** 1850 * Return a list of the tasks that are currently running, with 1851 * the most recent being first and older ones after in order. Note that 1852 * "running" does not mean any of the task's code is currently loaded or 1853 * activity -- the task may have been frozen by the system, so that it 1854 * can be restarted in its previous state when next brought to the 1855 * foreground. 1856 * 1857 * <p><b>Note: this method is only intended for debugging and presenting 1858 * task management user interfaces</b>. This should never be used for 1859 * core logic in an application, such as deciding between different 1860 * behaviors based on the information found here. Such uses are 1861 * <em>not</em> supported, and will likely break in the future. For 1862 * example, if multiple applications can be actively running at the 1863 * same time, assumptions made about the meaning of the data here for 1864 * purposes of control flow will be incorrect.</p> 1865 * 1866 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1867 * is no longer available to third party 1868 * applications: the introduction of document-centric recents means 1869 * it can leak person information to the caller. For backwards compatibility, 1870 * it will still return a small subset of its data: at least the caller's 1871 * own tasks, and possibly some other tasks 1872 * such as home that are known to not be sensitive. 1873 * 1874 * @param maxNum The maximum number of entries to return in the list. The 1875 * actual number returned may be smaller, depending on how many tasks the 1876 * user has started. 1877 * 1878 * @return Returns a list of RunningTaskInfo records describing each of 1879 * the running tasks. 1880 */ 1881 @Deprecated 1882 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1883 throws SecurityException { 1884 try { 1885 return getService().getTasks(maxNum, 0); 1886 } catch (RemoteException e) { 1887 throw e.rethrowFromSystemServer(); 1888 } 1889 } 1890 1891 /** 1892 * Completely remove the given task. 1893 * 1894 * @param taskId Identifier of the task to be removed. 1895 * @return Returns true if the given task was found and removed. 1896 * 1897 * @hide 1898 */ 1899 public boolean removeTask(int taskId) throws SecurityException { 1900 try { 1901 return getService().removeTask(taskId); 1902 } catch (RemoteException e) { 1903 throw e.rethrowFromSystemServer(); 1904 } 1905 } 1906 1907 /** 1908 * Sets the windowing mode for a specific task. Only works on tasks of type 1909 * {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} 1910 * @param taskId The id of the task to set the windowing mode for. 1911 * @param windowingMode The windowing mode to set for the task. 1912 * @param toTop If the task should be moved to the top once the windowing mode changes. 1913 * @hide 1914 */ 1915 @TestApi 1916 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1917 public void setTaskWindowingMode(int taskId, int windowingMode, boolean toTop) 1918 throws SecurityException { 1919 try { 1920 getService().setTaskWindowingMode(taskId, windowingMode, toTop); 1921 } catch (RemoteException e) { 1922 throw e.rethrowFromSystemServer(); 1923 } 1924 } 1925 1926 /** 1927 * Resizes the input stack id to the given bounds. 1928 * @param stackId Id of the stack to resize. 1929 * @param bounds Bounds to resize the stack to or {@code null} for fullscreen. 1930 * @hide 1931 */ 1932 @TestApi 1933 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1934 public void resizeStack(int stackId, Rect bounds) throws SecurityException { 1935 try { 1936 getService().resizeStack(stackId, bounds, false /* allowResizeInDockedMode */, 1937 false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); 1938 } catch (RemoteException e) { 1939 throw e.rethrowFromSystemServer(); 1940 } 1941 } 1942 1943 /** 1944 * Removes stacks in the windowing modes from the system if they are of activity type 1945 * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED 1946 * 1947 * @hide 1948 */ 1949 @TestApi 1950 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1951 public void removeStacksInWindowingModes(int[] windowingModes) throws SecurityException { 1952 try { 1953 getService().removeStacksInWindowingModes(windowingModes); 1954 } catch (RemoteException e) { 1955 throw e.rethrowFromSystemServer(); 1956 } 1957 } 1958 1959 /** 1960 * Removes stack of the activity types from the system. 1961 * 1962 * @hide 1963 */ 1964 @TestApi 1965 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1966 public void removeStacksWithActivityTypes(int[] activityTypes) throws SecurityException { 1967 try { 1968 getService().removeStacksWithActivityTypes(activityTypes); 1969 } catch (RemoteException e) { 1970 throw e.rethrowFromSystemServer(); 1971 } 1972 } 1973 1974 /** 1975 * Represents a task snapshot. 1976 * @hide 1977 */ 1978 public static class TaskSnapshot implements Parcelable { 1979 1980 private final GraphicBuffer mSnapshot; 1981 private final int mOrientation; 1982 private final Rect mContentInsets; 1983 private final boolean mReducedResolution; 1984 private final float mScale; 1985 1986 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 1987 boolean reducedResolution, float scale) { 1988 mSnapshot = snapshot; 1989 mOrientation = orientation; 1990 mContentInsets = new Rect(contentInsets); 1991 mReducedResolution = reducedResolution; 1992 mScale = scale; 1993 } 1994 1995 private TaskSnapshot(Parcel source) { 1996 mSnapshot = source.readParcelable(null /* classLoader */); 1997 mOrientation = source.readInt(); 1998 mContentInsets = source.readParcelable(null /* classLoader */); 1999 mReducedResolution = source.readBoolean(); 2000 mScale = source.readFloat(); 2001 } 2002 2003 /** 2004 * @return The graphic buffer representing the screenshot. 2005 */ 2006 public GraphicBuffer getSnapshot() { 2007 return mSnapshot; 2008 } 2009 2010 /** 2011 * @return The screen orientation the screenshot was taken in. 2012 */ 2013 public int getOrientation() { 2014 return mOrientation; 2015 } 2016 2017 /** 2018 * @return The system/content insets on the snapshot. These can be clipped off in order to 2019 * remove any areas behind system bars in the snapshot. 2020 */ 2021 public Rect getContentInsets() { 2022 return mContentInsets; 2023 } 2024 2025 /** 2026 * @return Whether this snapshot is a down-sampled version of the full resolution. 2027 */ 2028 public boolean isReducedResolution() { 2029 return mReducedResolution; 2030 } 2031 2032 /** 2033 * @return The scale this snapshot was taken in. 2034 */ 2035 public float getScale() { 2036 return mScale; 2037 } 2038 2039 @Override 2040 public int describeContents() { 2041 return 0; 2042 } 2043 2044 @Override 2045 public void writeToParcel(Parcel dest, int flags) { 2046 dest.writeParcelable(mSnapshot, 0); 2047 dest.writeInt(mOrientation); 2048 dest.writeParcelable(mContentInsets, 0); 2049 dest.writeBoolean(mReducedResolution); 2050 dest.writeFloat(mScale); 2051 } 2052 2053 @Override 2054 public String toString() { 2055 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2056 + " mContentInsets=" + mContentInsets.toShortString() 2057 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2058 } 2059 2060 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2061 public TaskSnapshot createFromParcel(Parcel source) { 2062 return new TaskSnapshot(source); 2063 } 2064 public TaskSnapshot[] newArray(int size) { 2065 return new TaskSnapshot[size]; 2066 } 2067 }; 2068 } 2069 2070 /** @hide */ 2071 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2072 MOVE_TASK_WITH_HOME, 2073 MOVE_TASK_NO_USER_ACTION, 2074 }) 2075 @Retention(RetentionPolicy.SOURCE) 2076 public @interface MoveTaskFlags {} 2077 2078 /** 2079 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2080 * activity along with the task, so it is positioned immediately behind 2081 * the task. 2082 */ 2083 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2084 2085 /** 2086 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2087 * user-instigated action, so the current activity will not receive a 2088 * hint that the user is leaving. 2089 */ 2090 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2091 2092 /** 2093 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2094 * with a null options argument. 2095 * 2096 * @param taskId The identifier of the task to be moved, as found in 2097 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2098 * @param flags Additional operational flags. 2099 */ 2100 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2101 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2102 moveTaskToFront(taskId, flags, null); 2103 } 2104 2105 /** 2106 * Ask that the task associated with a given task ID be moved to the 2107 * front of the stack, so it is now visible to the user. 2108 * 2109 * @param taskId The identifier of the task to be moved, as found in 2110 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2111 * @param flags Additional operational flags. 2112 * @param options Additional options for the operation, either null or 2113 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2114 * Context.startActivity(Intent, Bundle)}. 2115 */ 2116 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2117 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2118 try { 2119 getService().moveTaskToFront(taskId, flags, options); 2120 } catch (RemoteException e) { 2121 throw e.rethrowFromSystemServer(); 2122 } 2123 } 2124 2125 /** 2126 * Information you can retrieve about a particular Service that is 2127 * currently running in the system. 2128 */ 2129 public static class RunningServiceInfo implements Parcelable { 2130 /** 2131 * The service component. 2132 */ 2133 public ComponentName service; 2134 2135 /** 2136 * If non-zero, this is the process the service is running in. 2137 */ 2138 public int pid; 2139 2140 /** 2141 * The UID that owns this service. 2142 */ 2143 public int uid; 2144 2145 /** 2146 * The name of the process this service runs in. 2147 */ 2148 public String process; 2149 2150 /** 2151 * Set to true if the service has asked to run as a foreground process. 2152 */ 2153 public boolean foreground; 2154 2155 /** 2156 * The time when the service was first made active, either by someone 2157 * starting or binding to it. This 2158 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2159 */ 2160 public long activeSince; 2161 2162 /** 2163 * Set to true if this service has been explicitly started. 2164 */ 2165 public boolean started; 2166 2167 /** 2168 * Number of clients connected to the service. 2169 */ 2170 public int clientCount; 2171 2172 /** 2173 * Number of times the service's process has crashed while the service 2174 * is running. 2175 */ 2176 public int crashCount; 2177 2178 /** 2179 * The time when there was last activity in the service (either 2180 * explicit requests to start it or clients binding to it). This 2181 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2182 */ 2183 public long lastActivityTime; 2184 2185 /** 2186 * If non-zero, this service is not currently running, but scheduled to 2187 * restart at the given time. 2188 */ 2189 public long restarting; 2190 2191 /** 2192 * Bit for {@link #flags}: set if this service has been 2193 * explicitly started. 2194 */ 2195 public static final int FLAG_STARTED = 1<<0; 2196 2197 /** 2198 * Bit for {@link #flags}: set if the service has asked to 2199 * run as a foreground process. 2200 */ 2201 public static final int FLAG_FOREGROUND = 1<<1; 2202 2203 /** 2204 * Bit for {@link #flags}: set if the service is running in a 2205 * core system process. 2206 */ 2207 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2208 2209 /** 2210 * Bit for {@link #flags}: set if the service is running in a 2211 * persistent process. 2212 */ 2213 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2214 2215 /** 2216 * Running flags. 2217 */ 2218 public int flags; 2219 2220 /** 2221 * For special services that are bound to by system code, this is 2222 * the package that holds the binding. 2223 */ 2224 public String clientPackage; 2225 2226 /** 2227 * For special services that are bound to by system code, this is 2228 * a string resource providing a user-visible label for who the 2229 * client is. 2230 */ 2231 public int clientLabel; 2232 2233 public RunningServiceInfo() { 2234 } 2235 2236 public int describeContents() { 2237 return 0; 2238 } 2239 2240 public void writeToParcel(Parcel dest, int flags) { 2241 ComponentName.writeToParcel(service, dest); 2242 dest.writeInt(pid); 2243 dest.writeInt(uid); 2244 dest.writeString(process); 2245 dest.writeInt(foreground ? 1 : 0); 2246 dest.writeLong(activeSince); 2247 dest.writeInt(started ? 1 : 0); 2248 dest.writeInt(clientCount); 2249 dest.writeInt(crashCount); 2250 dest.writeLong(lastActivityTime); 2251 dest.writeLong(restarting); 2252 dest.writeInt(this.flags); 2253 dest.writeString(clientPackage); 2254 dest.writeInt(clientLabel); 2255 } 2256 2257 public void readFromParcel(Parcel source) { 2258 service = ComponentName.readFromParcel(source); 2259 pid = source.readInt(); 2260 uid = source.readInt(); 2261 process = source.readString(); 2262 foreground = source.readInt() != 0; 2263 activeSince = source.readLong(); 2264 started = source.readInt() != 0; 2265 clientCount = source.readInt(); 2266 crashCount = source.readInt(); 2267 lastActivityTime = source.readLong(); 2268 restarting = source.readLong(); 2269 flags = source.readInt(); 2270 clientPackage = source.readString(); 2271 clientLabel = source.readInt(); 2272 } 2273 2274 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2275 public RunningServiceInfo createFromParcel(Parcel source) { 2276 return new RunningServiceInfo(source); 2277 } 2278 public RunningServiceInfo[] newArray(int size) { 2279 return new RunningServiceInfo[size]; 2280 } 2281 }; 2282 2283 private RunningServiceInfo(Parcel source) { 2284 readFromParcel(source); 2285 } 2286 } 2287 2288 /** 2289 * Return a list of the services that are currently running. 2290 * 2291 * <p><b>Note: this method is only intended for debugging or implementing 2292 * service management type user interfaces.</b></p> 2293 * 2294 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2295 * is no longer available to third party applications. For backwards compatibility, 2296 * it will still return the caller's own services. 2297 * 2298 * @param maxNum The maximum number of entries to return in the list. The 2299 * actual number returned may be smaller, depending on how many services 2300 * are running. 2301 * 2302 * @return Returns a list of RunningServiceInfo records describing each of 2303 * the running tasks. 2304 */ 2305 @Deprecated 2306 public List<RunningServiceInfo> getRunningServices(int maxNum) 2307 throws SecurityException { 2308 try { 2309 return getService() 2310 .getServices(maxNum, 0); 2311 } catch (RemoteException e) { 2312 throw e.rethrowFromSystemServer(); 2313 } 2314 } 2315 2316 /** 2317 * Returns a PendingIntent you can start to show a control panel for the 2318 * given running service. If the service does not have a control panel, 2319 * null is returned. 2320 */ 2321 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2322 throws SecurityException { 2323 try { 2324 return getService() 2325 .getRunningServiceControlPanel(service); 2326 } catch (RemoteException e) { 2327 throw e.rethrowFromSystemServer(); 2328 } 2329 } 2330 2331 /** 2332 * Information you can retrieve about the available memory through 2333 * {@link ActivityManager#getMemoryInfo}. 2334 */ 2335 public static class MemoryInfo implements Parcelable { 2336 /** 2337 * The available memory on the system. This number should not 2338 * be considered absolute: due to the nature of the kernel, a significant 2339 * portion of this memory is actually in use and needed for the overall 2340 * system to run well. 2341 */ 2342 public long availMem; 2343 2344 /** 2345 * The total memory accessible by the kernel. This is basically the 2346 * RAM size of the device, not including below-kernel fixed allocations 2347 * like DMA buffers, RAM for the baseband CPU, etc. 2348 */ 2349 public long totalMem; 2350 2351 /** 2352 * The threshold of {@link #availMem} at which we consider memory to be 2353 * low and start killing background services and other non-extraneous 2354 * processes. 2355 */ 2356 public long threshold; 2357 2358 /** 2359 * Set to true if the system considers itself to currently be in a low 2360 * memory situation. 2361 */ 2362 public boolean lowMemory; 2363 2364 /** @hide */ 2365 public long hiddenAppThreshold; 2366 /** @hide */ 2367 public long secondaryServerThreshold; 2368 /** @hide */ 2369 public long visibleAppThreshold; 2370 /** @hide */ 2371 public long foregroundAppThreshold; 2372 2373 public MemoryInfo() { 2374 } 2375 2376 public int describeContents() { 2377 return 0; 2378 } 2379 2380 public void writeToParcel(Parcel dest, int flags) { 2381 dest.writeLong(availMem); 2382 dest.writeLong(totalMem); 2383 dest.writeLong(threshold); 2384 dest.writeInt(lowMemory ? 1 : 0); 2385 dest.writeLong(hiddenAppThreshold); 2386 dest.writeLong(secondaryServerThreshold); 2387 dest.writeLong(visibleAppThreshold); 2388 dest.writeLong(foregroundAppThreshold); 2389 } 2390 2391 public void readFromParcel(Parcel source) { 2392 availMem = source.readLong(); 2393 totalMem = source.readLong(); 2394 threshold = source.readLong(); 2395 lowMemory = source.readInt() != 0; 2396 hiddenAppThreshold = source.readLong(); 2397 secondaryServerThreshold = source.readLong(); 2398 visibleAppThreshold = source.readLong(); 2399 foregroundAppThreshold = source.readLong(); 2400 } 2401 2402 public static final Creator<MemoryInfo> CREATOR 2403 = new Creator<MemoryInfo>() { 2404 public MemoryInfo createFromParcel(Parcel source) { 2405 return new MemoryInfo(source); 2406 } 2407 public MemoryInfo[] newArray(int size) { 2408 return new MemoryInfo[size]; 2409 } 2410 }; 2411 2412 private MemoryInfo(Parcel source) { 2413 readFromParcel(source); 2414 } 2415 } 2416 2417 /** 2418 * Return general information about the memory state of the system. This 2419 * can be used to help decide how to manage your own memory, though note 2420 * that polling is not recommended and 2421 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2422 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2423 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2424 * level of your process as needed, which gives a better hint for how to 2425 * manage its memory. 2426 */ 2427 public void getMemoryInfo(MemoryInfo outInfo) { 2428 try { 2429 getService().getMemoryInfo(outInfo); 2430 } catch (RemoteException e) { 2431 throw e.rethrowFromSystemServer(); 2432 } 2433 } 2434 2435 /** 2436 * Information you can retrieve about an ActivityStack in the system. 2437 * @hide 2438 */ 2439 public static class StackInfo implements Parcelable { 2440 public int stackId; 2441 public Rect bounds = new Rect(); 2442 public int[] taskIds; 2443 public String[] taskNames; 2444 public Rect[] taskBounds; 2445 public int[] taskUserIds; 2446 public ComponentName topActivity; 2447 public int displayId; 2448 public int userId; 2449 public boolean visible; 2450 // Index of the stack in the display's stack list, can be used for comparison of stack order 2451 public int position; 2452 /** 2453 * The full configuration the stack is currently running in. 2454 * @hide 2455 */ 2456 final public Configuration configuration = new Configuration(); 2457 2458 @Override 2459 public int describeContents() { 2460 return 0; 2461 } 2462 2463 @Override 2464 public void writeToParcel(Parcel dest, int flags) { 2465 dest.writeInt(stackId); 2466 dest.writeInt(bounds.left); 2467 dest.writeInt(bounds.top); 2468 dest.writeInt(bounds.right); 2469 dest.writeInt(bounds.bottom); 2470 dest.writeIntArray(taskIds); 2471 dest.writeStringArray(taskNames); 2472 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2473 dest.writeInt(boundsCount); 2474 for (int i = 0; i < boundsCount; i++) { 2475 dest.writeInt(taskBounds[i].left); 2476 dest.writeInt(taskBounds[i].top); 2477 dest.writeInt(taskBounds[i].right); 2478 dest.writeInt(taskBounds[i].bottom); 2479 } 2480 dest.writeIntArray(taskUserIds); 2481 dest.writeInt(displayId); 2482 dest.writeInt(userId); 2483 dest.writeInt(visible ? 1 : 0); 2484 dest.writeInt(position); 2485 if (topActivity != null) { 2486 dest.writeInt(1); 2487 topActivity.writeToParcel(dest, 0); 2488 } else { 2489 dest.writeInt(0); 2490 } 2491 configuration.writeToParcel(dest, flags); 2492 } 2493 2494 public void readFromParcel(Parcel source) { 2495 stackId = source.readInt(); 2496 bounds = new Rect( 2497 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2498 taskIds = source.createIntArray(); 2499 taskNames = source.createStringArray(); 2500 final int boundsCount = source.readInt(); 2501 if (boundsCount > 0) { 2502 taskBounds = new Rect[boundsCount]; 2503 for (int i = 0; i < boundsCount; i++) { 2504 taskBounds[i] = new Rect(); 2505 taskBounds[i].set( 2506 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2507 } 2508 } else { 2509 taskBounds = null; 2510 } 2511 taskUserIds = source.createIntArray(); 2512 displayId = source.readInt(); 2513 userId = source.readInt(); 2514 visible = source.readInt() > 0; 2515 position = source.readInt(); 2516 if (source.readInt() > 0) { 2517 topActivity = ComponentName.readFromParcel(source); 2518 } 2519 configuration.readFromParcel(source); 2520 } 2521 2522 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2523 @Override 2524 public StackInfo createFromParcel(Parcel source) { 2525 return new StackInfo(source); 2526 } 2527 @Override 2528 public StackInfo[] newArray(int size) { 2529 return new StackInfo[size]; 2530 } 2531 }; 2532 2533 public StackInfo() { 2534 } 2535 2536 private StackInfo(Parcel source) { 2537 readFromParcel(source); 2538 } 2539 2540 public String toString(String prefix) { 2541 StringBuilder sb = new StringBuilder(256); 2542 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2543 sb.append(" bounds="); sb.append(bounds.toShortString()); 2544 sb.append(" displayId="); sb.append(displayId); 2545 sb.append(" userId="); sb.append(userId); 2546 sb.append("\n"); 2547 sb.append(" configuration="); sb.append(configuration); 2548 sb.append("\n"); 2549 prefix = prefix + " "; 2550 for (int i = 0; i < taskIds.length; ++i) { 2551 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2552 sb.append(": "); sb.append(taskNames[i]); 2553 if (taskBounds != null) { 2554 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2555 } 2556 sb.append(" userId=").append(taskUserIds[i]); 2557 sb.append(" visible=").append(visible); 2558 if (topActivity != null) { 2559 sb.append(" topActivity=").append(topActivity); 2560 } 2561 sb.append("\n"); 2562 } 2563 return sb.toString(); 2564 } 2565 2566 @Override 2567 public String toString() { 2568 return toString(""); 2569 } 2570 } 2571 2572 /** 2573 * @hide 2574 */ 2575 @RequiresPermission(anyOf={Manifest.permission.CLEAR_APP_USER_DATA, 2576 Manifest.permission.ACCESS_INSTANT_APPS}) 2577 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2578 try { 2579 return getService().clearApplicationUserData(packageName, 2580 observer, UserHandle.myUserId()); 2581 } catch (RemoteException e) { 2582 throw e.rethrowFromSystemServer(); 2583 } 2584 } 2585 2586 /** 2587 * Permits an application to erase its own data from disk. This is equivalent to 2588 * the user choosing to clear the app's data from within the device settings UI. It 2589 * erases all dynamic data associated with the app -- its private data and data in its 2590 * private area on external storage -- but does not remove the installed application 2591 * itself, nor any OBB files. It also revokes all runtime permissions that the app has acquired, 2592 * clears all notifications and removes all Uri grants related to this application. 2593 * 2594 * @return {@code true} if the application successfully requested that the application's 2595 * data be erased; {@code false} otherwise. 2596 */ 2597 public boolean clearApplicationUserData() { 2598 return clearApplicationUserData(mContext.getPackageName(), null); 2599 } 2600 2601 2602 /** 2603 * Permits an application to get the persistent URI permissions granted to another. 2604 * 2605 * <p>Typically called by Settings. 2606 * 2607 * @param packageName application to look for the granted permissions 2608 * @return list of granted URI permissions 2609 * 2610 * @hide 2611 */ 2612 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2613 try { 2614 return getService().getGrantedUriPermissions(packageName, 2615 UserHandle.myUserId()); 2616 } catch (RemoteException e) { 2617 throw e.rethrowFromSystemServer(); 2618 } 2619 } 2620 2621 /** 2622 * Permits an application to clear the persistent URI permissions granted to another. 2623 * 2624 * <p>Typically called by Settings. 2625 * 2626 * @param packageName application to clear its granted permissions 2627 * 2628 * @hide 2629 */ 2630 public void clearGrantedUriPermissions(String packageName) { 2631 try { 2632 getService().clearGrantedUriPermissions(packageName, 2633 UserHandle.myUserId()); 2634 } catch (RemoteException e) { 2635 throw e.rethrowFromSystemServer(); 2636 } 2637 } 2638 2639 /** 2640 * Information you can retrieve about any processes that are in an error condition. 2641 */ 2642 public static class ProcessErrorStateInfo implements Parcelable { 2643 /** 2644 * Condition codes 2645 */ 2646 public static final int NO_ERROR = 0; 2647 public static final int CRASHED = 1; 2648 public static final int NOT_RESPONDING = 2; 2649 2650 /** 2651 * The condition that the process is in. 2652 */ 2653 public int condition; 2654 2655 /** 2656 * The process name in which the crash or error occurred. 2657 */ 2658 public String processName; 2659 2660 /** 2661 * The pid of this process; 0 if none 2662 */ 2663 public int pid; 2664 2665 /** 2666 * The kernel user-ID that has been assigned to this process; 2667 * currently this is not a unique ID (multiple applications can have 2668 * the same uid). 2669 */ 2670 public int uid; 2671 2672 /** 2673 * The activity name associated with the error, if known. May be null. 2674 */ 2675 public String tag; 2676 2677 /** 2678 * A short message describing the error condition. 2679 */ 2680 public String shortMsg; 2681 2682 /** 2683 * A long message describing the error condition. 2684 */ 2685 public String longMsg; 2686 2687 /** 2688 * The stack trace where the error originated. May be null. 2689 */ 2690 public String stackTrace; 2691 2692 /** 2693 * to be deprecated: This value will always be null. 2694 */ 2695 public byte[] crashData = null; 2696 2697 public ProcessErrorStateInfo() { 2698 } 2699 2700 @Override 2701 public int describeContents() { 2702 return 0; 2703 } 2704 2705 @Override 2706 public void writeToParcel(Parcel dest, int flags) { 2707 dest.writeInt(condition); 2708 dest.writeString(processName); 2709 dest.writeInt(pid); 2710 dest.writeInt(uid); 2711 dest.writeString(tag); 2712 dest.writeString(shortMsg); 2713 dest.writeString(longMsg); 2714 dest.writeString(stackTrace); 2715 } 2716 2717 public void readFromParcel(Parcel source) { 2718 condition = source.readInt(); 2719 processName = source.readString(); 2720 pid = source.readInt(); 2721 uid = source.readInt(); 2722 tag = source.readString(); 2723 shortMsg = source.readString(); 2724 longMsg = source.readString(); 2725 stackTrace = source.readString(); 2726 } 2727 2728 public static final Creator<ProcessErrorStateInfo> CREATOR = 2729 new Creator<ProcessErrorStateInfo>() { 2730 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2731 return new ProcessErrorStateInfo(source); 2732 } 2733 public ProcessErrorStateInfo[] newArray(int size) { 2734 return new ProcessErrorStateInfo[size]; 2735 } 2736 }; 2737 2738 private ProcessErrorStateInfo(Parcel source) { 2739 readFromParcel(source); 2740 } 2741 } 2742 2743 /** 2744 * Returns a list of any processes that are currently in an error condition. The result 2745 * will be null if all processes are running properly at this time. 2746 * 2747 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2748 * current error conditions (it will not return an empty list). This list ordering is not 2749 * specified. 2750 */ 2751 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2752 try { 2753 return getService().getProcessesInErrorState(); 2754 } catch (RemoteException e) { 2755 throw e.rethrowFromSystemServer(); 2756 } 2757 } 2758 2759 /** 2760 * Information you can retrieve about a running process. 2761 */ 2762 public static class RunningAppProcessInfo implements Parcelable { 2763 /** 2764 * The name of the process that this object is associated with 2765 */ 2766 public String processName; 2767 2768 /** 2769 * The pid of this process; 0 if none 2770 */ 2771 public int pid; 2772 2773 /** 2774 * The user id of this process. 2775 */ 2776 public int uid; 2777 2778 /** 2779 * All packages that have been loaded into the process. 2780 */ 2781 public String pkgList[]; 2782 2783 /** 2784 * Constant for {@link #flags}: this is an app that is unable to 2785 * correctly save its state when going to the background, 2786 * so it can not be killed while in the background. 2787 * @hide 2788 */ 2789 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2790 2791 /** 2792 * Constant for {@link #flags}: this process is associated with a 2793 * persistent system app. 2794 * @hide 2795 */ 2796 public static final int FLAG_PERSISTENT = 1<<1; 2797 2798 /** 2799 * Constant for {@link #flags}: this process is associated with a 2800 * persistent system app. 2801 * @hide 2802 */ 2803 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2804 2805 /** 2806 * Flags of information. May be any of 2807 * {@link #FLAG_CANT_SAVE_STATE}. 2808 * @hide 2809 */ 2810 public int flags; 2811 2812 /** 2813 * Last memory trim level reported to the process: corresponds to 2814 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2815 * ComponentCallbacks2.onTrimMemory(int)}. 2816 */ 2817 public int lastTrimLevel; 2818 2819 /** @hide */ 2820 @IntDef(prefix = { "IMPORTANCE_" }, value = { 2821 IMPORTANCE_FOREGROUND, 2822 IMPORTANCE_FOREGROUND_SERVICE, 2823 IMPORTANCE_TOP_SLEEPING, 2824 IMPORTANCE_VISIBLE, 2825 IMPORTANCE_PERCEPTIBLE, 2826 IMPORTANCE_CANT_SAVE_STATE, 2827 IMPORTANCE_SERVICE, 2828 IMPORTANCE_CACHED, 2829 IMPORTANCE_GONE, 2830 }) 2831 @Retention(RetentionPolicy.SOURCE) 2832 public @interface Importance {} 2833 2834 /** 2835 * Constant for {@link #importance}: This process is running the 2836 * foreground UI; that is, it is the thing currently at the top of the screen 2837 * that the user is interacting with. 2838 */ 2839 public static final int IMPORTANCE_FOREGROUND = 100; 2840 2841 /** 2842 * Constant for {@link #importance}: This process is running a foreground 2843 * service, for example to perform music playback even while the user is 2844 * not immediately in the app. This generally indicates that the process 2845 * is doing something the user actively cares about. 2846 */ 2847 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2848 2849 /** 2850 * Constant for {@link #importance}: This process is running the foreground 2851 * UI, but the device is asleep so it is not visible to the user. This means 2852 * the user is not really aware of the process, because they can not see or 2853 * interact with it, but it is quite important because it what they expect to 2854 * return to once unlocking the device. 2855 */ 2856 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2857 2858 /** 2859 * Constant for {@link #importance}: This process is running something 2860 * that is actively visible to the user, though not in the immediate 2861 * foreground. This may be running a window that is behind the current 2862 * foreground (so paused and with its state saved, not interacting with 2863 * the user, but visible to them to some degree); it may also be running 2864 * other services under the system's control that it inconsiders important. 2865 */ 2866 public static final int IMPORTANCE_VISIBLE = 200; 2867 2868 /** 2869 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 2870 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2871 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 2872 * 2873 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 2874 * on Android versions below {@link Build.VERSION_CODES#O}. 2875 * 2876 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 2877 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2878 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2879 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 2880 */ 2881 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 2882 2883 /** 2884 * Constant for {@link #importance}: This process is not something the user 2885 * is directly aware of, but is otherwise perceptible to them to some degree. 2886 */ 2887 public static final int IMPORTANCE_PERCEPTIBLE = 230; 2888 2889 /** 2890 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 2891 * this wrong value 2892 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2893 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 2894 * 2895 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 2896 * on Android versions below {@link Build.VERSION_CODES#O}. 2897 * 2898 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 2899 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2900 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2901 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 2902 * 2903 * @hide 2904 */ 2905 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 2906 2907 /** 2908 * Constant for {@link #importance}: This process is running an 2909 * application that can not save its state, and thus can't be killed 2910 * while in the background. 2911 * @hide 2912 */ 2913 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 2914 2915 /** 2916 * Constant for {@link #importance}: This process is contains services 2917 * that should remain running. These are background services apps have 2918 * started, not something the user is aware of, so they may be killed by 2919 * the system relatively freely (though it is generally desired that they 2920 * stay running as long as they want to). 2921 */ 2922 public static final int IMPORTANCE_SERVICE = 300; 2923 2924 /** 2925 * Constant for {@link #importance}: This process process contains 2926 * cached code that is expendable, not actively running any app components 2927 * we care about. 2928 */ 2929 public static final int IMPORTANCE_CACHED = 400; 2930 2931 /** 2932 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 2933 */ 2934 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 2935 2936 /** 2937 * Constant for {@link #importance}: This process is empty of any 2938 * actively running code. 2939 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 2940 */ 2941 @Deprecated 2942 public static final int IMPORTANCE_EMPTY = 500; 2943 2944 /** 2945 * Constant for {@link #importance}: This process does not exist. 2946 */ 2947 public static final int IMPORTANCE_GONE = 1000; 2948 2949 /** 2950 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 2951 * will be passed to a client, use {@link #procStateToImportanceForClient}. 2952 * @hide 2953 */ 2954 public static @Importance int procStateToImportance(int procState) { 2955 if (procState == PROCESS_STATE_NONEXISTENT) { 2956 return IMPORTANCE_GONE; 2957 } else if (procState >= PROCESS_STATE_HOME) { 2958 return IMPORTANCE_CACHED; 2959 } else if (procState >= PROCESS_STATE_SERVICE) { 2960 return IMPORTANCE_SERVICE; 2961 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2962 return IMPORTANCE_CANT_SAVE_STATE; 2963 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 2964 return IMPORTANCE_PERCEPTIBLE; 2965 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2966 return IMPORTANCE_VISIBLE; 2967 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2968 return IMPORTANCE_TOP_SLEEPING; 2969 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2970 return IMPORTANCE_FOREGROUND_SERVICE; 2971 } else { 2972 return IMPORTANCE_FOREGROUND; 2973 } 2974 } 2975 2976 /** 2977 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 2978 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 2979 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 2980 * client's target SDK < {@link VERSION_CODES#O}. 2981 * @hide 2982 */ 2983 public static @Importance int procStateToImportanceForClient(int procState, 2984 Context clientContext) { 2985 return procStateToImportanceForTargetSdk(procState, 2986 clientContext.getApplicationInfo().targetSdkVersion); 2987 } 2988 2989 /** 2990 * See {@link #procStateToImportanceForClient}. 2991 * @hide 2992 */ 2993 public static @Importance int procStateToImportanceForTargetSdk(int procState, 2994 int targetSdkVersion) { 2995 final int importance = procStateToImportance(procState); 2996 2997 // For pre O apps, convert to the old, wrong values. 2998 if (targetSdkVersion < VERSION_CODES.O) { 2999 switch (importance) { 3000 case IMPORTANCE_PERCEPTIBLE: 3001 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3002 case IMPORTANCE_CANT_SAVE_STATE: 3003 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3004 } 3005 } 3006 return importance; 3007 } 3008 3009 /** @hide */ 3010 public static int importanceToProcState(@Importance int importance) { 3011 if (importance == IMPORTANCE_GONE) { 3012 return PROCESS_STATE_NONEXISTENT; 3013 } else if (importance >= IMPORTANCE_CACHED) { 3014 return PROCESS_STATE_HOME; 3015 } else if (importance >= IMPORTANCE_SERVICE) { 3016 return PROCESS_STATE_SERVICE; 3017 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3018 return PROCESS_STATE_HEAVY_WEIGHT; 3019 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3020 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3021 } else if (importance >= IMPORTANCE_VISIBLE) { 3022 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3023 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3024 return PROCESS_STATE_TOP_SLEEPING; 3025 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3026 return PROCESS_STATE_FOREGROUND_SERVICE; 3027 } else { 3028 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3029 } 3030 } 3031 3032 /** 3033 * The relative importance level that the system places on this process. 3034 * These constants are numbered so that "more important" values are 3035 * always smaller than "less important" values. 3036 */ 3037 public @Importance int importance; 3038 3039 /** 3040 * An additional ordering within a particular {@link #importance} 3041 * category, providing finer-grained information about the relative 3042 * utility of processes within a category. This number means nothing 3043 * except that a smaller values are more recently used (and thus 3044 * more important). Currently an LRU value is only maintained for 3045 * the {@link #IMPORTANCE_CACHED} category, though others may 3046 * be maintained in the future. 3047 */ 3048 public int lru; 3049 3050 /** 3051 * Constant for {@link #importanceReasonCode}: nothing special has 3052 * been specified for the reason for this level. 3053 */ 3054 public static final int REASON_UNKNOWN = 0; 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_PROVIDER_IN_USE = 1; 3064 3065 /** 3066 * Constant for {@link #importanceReasonCode}: one of the application's 3067 * content providers is being used by another process. The pid of 3068 * the client process is in {@link #importanceReasonPid} and the 3069 * target provider in this process is in 3070 * {@link #importanceReasonComponent}. 3071 */ 3072 public static final int REASON_SERVICE_IN_USE = 2; 3073 3074 /** 3075 * The reason for {@link #importance}, if any. 3076 */ 3077 public int importanceReasonCode; 3078 3079 /** 3080 * For the specified values of {@link #importanceReasonCode}, this 3081 * is the process ID of the other process that is a client of this 3082 * process. This will be 0 if no other process is using this one. 3083 */ 3084 public int importanceReasonPid; 3085 3086 /** 3087 * For the specified values of {@link #importanceReasonCode}, this 3088 * is the name of the component that is being used in this process. 3089 */ 3090 public ComponentName importanceReasonComponent; 3091 3092 /** 3093 * When {@link #importanceReasonPid} is non-0, this is the importance 3094 * of the other pid. @hide 3095 */ 3096 public int importanceReasonImportance; 3097 3098 /** 3099 * Current process state, as per PROCESS_STATE_* constants. 3100 * @hide 3101 */ 3102 public int processState; 3103 3104 public RunningAppProcessInfo() { 3105 importance = IMPORTANCE_FOREGROUND; 3106 importanceReasonCode = REASON_UNKNOWN; 3107 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3108 } 3109 3110 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3111 processName = pProcessName; 3112 pid = pPid; 3113 pkgList = pArr; 3114 } 3115 3116 public int describeContents() { 3117 return 0; 3118 } 3119 3120 public void writeToParcel(Parcel dest, int flags) { 3121 dest.writeString(processName); 3122 dest.writeInt(pid); 3123 dest.writeInt(uid); 3124 dest.writeStringArray(pkgList); 3125 dest.writeInt(this.flags); 3126 dest.writeInt(lastTrimLevel); 3127 dest.writeInt(importance); 3128 dest.writeInt(lru); 3129 dest.writeInt(importanceReasonCode); 3130 dest.writeInt(importanceReasonPid); 3131 ComponentName.writeToParcel(importanceReasonComponent, dest); 3132 dest.writeInt(importanceReasonImportance); 3133 dest.writeInt(processState); 3134 } 3135 3136 public void readFromParcel(Parcel source) { 3137 processName = source.readString(); 3138 pid = source.readInt(); 3139 uid = source.readInt(); 3140 pkgList = source.readStringArray(); 3141 flags = source.readInt(); 3142 lastTrimLevel = source.readInt(); 3143 importance = source.readInt(); 3144 lru = source.readInt(); 3145 importanceReasonCode = source.readInt(); 3146 importanceReasonPid = source.readInt(); 3147 importanceReasonComponent = ComponentName.readFromParcel(source); 3148 importanceReasonImportance = source.readInt(); 3149 processState = source.readInt(); 3150 } 3151 3152 public static final Creator<RunningAppProcessInfo> CREATOR = 3153 new Creator<RunningAppProcessInfo>() { 3154 public RunningAppProcessInfo createFromParcel(Parcel source) { 3155 return new RunningAppProcessInfo(source); 3156 } 3157 public RunningAppProcessInfo[] newArray(int size) { 3158 return new RunningAppProcessInfo[size]; 3159 } 3160 }; 3161 3162 private RunningAppProcessInfo(Parcel source) { 3163 readFromParcel(source); 3164 } 3165 } 3166 3167 /** 3168 * Returns a list of application processes installed on external media 3169 * that are running on the device. 3170 * 3171 * <p><b>Note: this method is only intended for debugging or building 3172 * a user-facing process management UI.</b></p> 3173 * 3174 * @return Returns a list of ApplicationInfo records, or null if none 3175 * This list ordering is not specified. 3176 * @hide 3177 */ 3178 public List<ApplicationInfo> getRunningExternalApplications() { 3179 try { 3180 return getService().getRunningExternalApplications(); 3181 } catch (RemoteException e) { 3182 throw e.rethrowFromSystemServer(); 3183 } 3184 } 3185 3186 /** 3187 * Sets the memory trim mode for a process and schedules a memory trim operation. 3188 * 3189 * <p><b>Note: this method is only intended for testing framework.</b></p> 3190 * 3191 * @return Returns true if successful. 3192 * @hide 3193 */ 3194 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3195 try { 3196 return getService().setProcessMemoryTrimLevel(process, userId, 3197 level); 3198 } catch (RemoteException e) { 3199 throw e.rethrowFromSystemServer(); 3200 } 3201 } 3202 3203 /** 3204 * Returns a list of application processes that are running on the device. 3205 * 3206 * <p><b>Note: this method is only intended for debugging or building 3207 * a user-facing process management UI.</b></p> 3208 * 3209 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3210 * running processes (it will not return an empty list). This list ordering is not 3211 * specified. 3212 */ 3213 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3214 try { 3215 return getService().getRunningAppProcesses(); 3216 } catch (RemoteException e) { 3217 throw e.rethrowFromSystemServer(); 3218 } 3219 } 3220 3221 /** 3222 * Return the importance of a given package name, based on the processes that are 3223 * currently running. The return value is one of the importance constants defined 3224 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3225 * processes that this package has code running inside of. If there are no processes 3226 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3227 * @hide 3228 */ 3229 @SystemApi @TestApi 3230 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3231 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3232 try { 3233 int procState = getService().getPackageProcessState(packageName, 3234 mContext.getOpPackageName()); 3235 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3236 } catch (RemoteException e) { 3237 throw e.rethrowFromSystemServer(); 3238 } 3239 } 3240 3241 /** 3242 * Return the importance of a given uid, based on the processes that are 3243 * currently running. The return value is one of the importance constants defined 3244 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3245 * processes that this uid has running. If there are no processes 3246 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3247 * @hide 3248 */ 3249 @SystemApi @TestApi 3250 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3251 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3252 try { 3253 int procState = getService().getUidProcessState(uid, 3254 mContext.getOpPackageName()); 3255 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3256 } catch (RemoteException e) { 3257 throw e.rethrowFromSystemServer(); 3258 } 3259 } 3260 3261 /** 3262 * Callback to get reports about changes to the importance of a uid. Use with 3263 * {@link #addOnUidImportanceListener}. 3264 * @hide 3265 */ 3266 @SystemApi @TestApi 3267 public interface OnUidImportanceListener { 3268 /** 3269 * The importance if a given uid has changed. Will be one of the importance 3270 * values in {@link RunningAppProcessInfo}; 3271 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3272 * when the uid is no longer running at all. This callback will happen on a thread 3273 * from a thread pool, not the main UI thread. 3274 * @param uid The uid whose importance has changed. 3275 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3276 */ 3277 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3278 } 3279 3280 /** 3281 * Start monitoring changes to the imoportance of uids running in the system. 3282 * @param listener The listener callback that will receive change reports. 3283 * @param importanceCutpoint The level of importance in which the caller is interested 3284 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3285 * is used here, you will receive a call each time a uids importance transitions between 3286 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3287 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3288 * 3289 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3290 * permission to use this feature.</p> 3291 * 3292 * @throws IllegalArgumentException If the listener is already registered. 3293 * @throws SecurityException If the caller does not hold 3294 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3295 * @hide 3296 */ 3297 @SystemApi @TestApi 3298 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3299 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3300 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3301 synchronized (this) { 3302 if (mImportanceListeners.containsKey(listener)) { 3303 throw new IllegalArgumentException("Listener already registered: " + listener); 3304 } 3305 // TODO: implement the cut point in the system process to avoid IPCs. 3306 UidObserver observer = new UidObserver(listener, mContext); 3307 try { 3308 getService().registerUidObserver(observer, 3309 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3310 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3311 mContext.getOpPackageName()); 3312 } catch (RemoteException e) { 3313 throw e.rethrowFromSystemServer(); 3314 } 3315 mImportanceListeners.put(listener, observer); 3316 } 3317 } 3318 3319 /** 3320 * Remove an importance listener that was previously registered with 3321 * {@link #addOnUidImportanceListener}. 3322 * 3323 * @throws IllegalArgumentException If the listener is not registered. 3324 * @hide 3325 */ 3326 @SystemApi @TestApi 3327 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3328 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3329 synchronized (this) { 3330 UidObserver observer = mImportanceListeners.remove(listener); 3331 if (observer == null) { 3332 throw new IllegalArgumentException("Listener not registered: " + listener); 3333 } 3334 try { 3335 getService().unregisterUidObserver(observer); 3336 } catch (RemoteException e) { 3337 throw e.rethrowFromSystemServer(); 3338 } 3339 } 3340 } 3341 3342 /** 3343 * Return global memory state information for the calling process. This 3344 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3345 * only fields that will be filled in are 3346 * {@link RunningAppProcessInfo#pid}, 3347 * {@link RunningAppProcessInfo#uid}, 3348 * {@link RunningAppProcessInfo#lastTrimLevel}, 3349 * {@link RunningAppProcessInfo#importance}, 3350 * {@link RunningAppProcessInfo#lru}, and 3351 * {@link RunningAppProcessInfo#importanceReasonCode}. 3352 */ 3353 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3354 try { 3355 getService().getMyMemoryState(outState); 3356 } catch (RemoteException e) { 3357 throw e.rethrowFromSystemServer(); 3358 } 3359 } 3360 3361 /** 3362 * Return information about the memory usage of one or more processes. 3363 * 3364 * <p><b>Note: this method is only intended for debugging or building 3365 * a user-facing process management UI.</b></p> 3366 * 3367 * @param pids The pids of the processes whose memory usage is to be 3368 * retrieved. 3369 * @return Returns an array of memory information, one for each 3370 * requested pid. 3371 */ 3372 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3373 try { 3374 return getService().getProcessMemoryInfo(pids); 3375 } catch (RemoteException e) { 3376 throw e.rethrowFromSystemServer(); 3377 } 3378 } 3379 3380 /** 3381 * @deprecated This is now just a wrapper for 3382 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3383 * is no longer available to applications because it allows them to 3384 * break other applications by removing their alarms, stopping their 3385 * services, etc. 3386 */ 3387 @Deprecated 3388 public void restartPackage(String packageName) { 3389 killBackgroundProcesses(packageName); 3390 } 3391 3392 /** 3393 * Have the system immediately kill all background processes associated 3394 * with the given package. This is the same as the kernel killing those 3395 * processes to reclaim memory; the system will take care of restarting 3396 * these processes in the future as needed. 3397 * 3398 * @param packageName The name of the package whose processes are to 3399 * be killed. 3400 */ 3401 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3402 public void killBackgroundProcesses(String packageName) { 3403 try { 3404 getService().killBackgroundProcesses(packageName, 3405 UserHandle.myUserId()); 3406 } catch (RemoteException e) { 3407 throw e.rethrowFromSystemServer(); 3408 } 3409 } 3410 3411 /** 3412 * Kills the specified UID. 3413 * @param uid The UID to kill. 3414 * @param reason The reason for the kill. 3415 * 3416 * @hide 3417 */ 3418 @SystemApi 3419 @RequiresPermission(Manifest.permission.KILL_UID) 3420 public void killUid(int uid, String reason) { 3421 try { 3422 getService().killUid(UserHandle.getAppId(uid), 3423 UserHandle.getUserId(uid), reason); 3424 } catch (RemoteException e) { 3425 throw e.rethrowFromSystemServer(); 3426 } 3427 } 3428 3429 /** 3430 * Have the system perform a force stop of everything associated with 3431 * the given application package. All processes that share its uid 3432 * will be killed, all services it has running stopped, all activities 3433 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3434 * broadcast will be sent, so that any of its registered alarms can 3435 * be stopped, notifications removed, etc. 3436 * 3437 * <p>You must hold the permission 3438 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3439 * call this method. 3440 * 3441 * @param packageName The name of the package to be stopped. 3442 * @param userId The user for which the running package is to be stopped. 3443 * 3444 * @hide This is not available to third party applications due to 3445 * it allowing them to break other applications by stopping their 3446 * services, removing their alarms, etc. 3447 */ 3448 public void forceStopPackageAsUser(String packageName, int userId) { 3449 try { 3450 getService().forceStopPackage(packageName, userId); 3451 } catch (RemoteException e) { 3452 throw e.rethrowFromSystemServer(); 3453 } 3454 } 3455 3456 /** 3457 * @see #forceStopPackageAsUser(String, int) 3458 * @hide 3459 */ 3460 @SystemApi 3461 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3462 public void forceStopPackage(String packageName) { 3463 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3464 } 3465 3466 /** 3467 * Get the device configuration attributes. 3468 */ 3469 public ConfigurationInfo getDeviceConfigurationInfo() { 3470 try { 3471 return getService().getDeviceConfigurationInfo(); 3472 } catch (RemoteException e) { 3473 throw e.rethrowFromSystemServer(); 3474 } 3475 } 3476 3477 /** 3478 * Get the preferred density of icons for the launcher. This is used when 3479 * custom drawables are created (e.g., for shortcuts). 3480 * 3481 * @return density in terms of DPI 3482 */ 3483 public int getLauncherLargeIconDensity() { 3484 final Resources res = mContext.getResources(); 3485 final int density = res.getDisplayMetrics().densityDpi; 3486 final int sw = res.getConfiguration().smallestScreenWidthDp; 3487 3488 if (sw < 600) { 3489 // Smaller than approx 7" tablets, use the regular icon size. 3490 return density; 3491 } 3492 3493 switch (density) { 3494 case DisplayMetrics.DENSITY_LOW: 3495 return DisplayMetrics.DENSITY_MEDIUM; 3496 case DisplayMetrics.DENSITY_MEDIUM: 3497 return DisplayMetrics.DENSITY_HIGH; 3498 case DisplayMetrics.DENSITY_TV: 3499 return DisplayMetrics.DENSITY_XHIGH; 3500 case DisplayMetrics.DENSITY_HIGH: 3501 return DisplayMetrics.DENSITY_XHIGH; 3502 case DisplayMetrics.DENSITY_XHIGH: 3503 return DisplayMetrics.DENSITY_XXHIGH; 3504 case DisplayMetrics.DENSITY_XXHIGH: 3505 return DisplayMetrics.DENSITY_XHIGH * 2; 3506 default: 3507 // The density is some abnormal value. Return some other 3508 // abnormal value that is a reasonable scaling of it. 3509 return (int)((density*1.5f)+.5f); 3510 } 3511 } 3512 3513 /** 3514 * Get the preferred launcher icon size. This is used when custom drawables 3515 * are created (e.g., for shortcuts). 3516 * 3517 * @return dimensions of square icons in terms of pixels 3518 */ 3519 public int getLauncherLargeIconSize() { 3520 return getLauncherLargeIconSizeInner(mContext); 3521 } 3522 3523 static int getLauncherLargeIconSizeInner(Context context) { 3524 final Resources res = context.getResources(); 3525 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3526 final int sw = res.getConfiguration().smallestScreenWidthDp; 3527 3528 if (sw < 600) { 3529 // Smaller than approx 7" tablets, use the regular icon size. 3530 return size; 3531 } 3532 3533 final int density = res.getDisplayMetrics().densityDpi; 3534 3535 switch (density) { 3536 case DisplayMetrics.DENSITY_LOW: 3537 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3538 case DisplayMetrics.DENSITY_MEDIUM: 3539 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3540 case DisplayMetrics.DENSITY_TV: 3541 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3542 case DisplayMetrics.DENSITY_HIGH: 3543 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3544 case DisplayMetrics.DENSITY_XHIGH: 3545 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3546 case DisplayMetrics.DENSITY_XXHIGH: 3547 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3548 default: 3549 // The density is some abnormal value. Return some other 3550 // abnormal value that is a reasonable scaling of it. 3551 return (int)((size*1.5f) + .5f); 3552 } 3553 } 3554 3555 /** 3556 * Returns "true" if the user interface is currently being messed with 3557 * by a monkey. 3558 */ 3559 public static boolean isUserAMonkey() { 3560 try { 3561 return getService().isUserAMonkey(); 3562 } catch (RemoteException e) { 3563 throw e.rethrowFromSystemServer(); 3564 } 3565 } 3566 3567 /** 3568 * Returns "true" if device is running in a test harness. 3569 */ 3570 public static boolean isRunningInTestHarness() { 3571 return SystemProperties.getBoolean("ro.test_harness", false); 3572 } 3573 3574 /** 3575 * Returns the launch count of each installed package. 3576 * 3577 * @hide 3578 */ 3579 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3580 try { 3581 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3582 ServiceManager.getService("usagestats")); 3583 if (usageStatsService == null) { 3584 return new HashMap<String, Integer>(); 3585 } 3586 3587 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3588 ActivityThread.currentPackageName()); 3589 if (allPkgUsageStats == null) { 3590 return new HashMap<String, Integer>(); 3591 } 3592 3593 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3594 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3595 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3596 } 3597 3598 return launchCounts; 3599 } catch (RemoteException e) { 3600 Log.w(TAG, "Could not query launch counts", e); 3601 return new HashMap<String, Integer>(); 3602 } 3603 }*/ 3604 3605 /** @hide */ 3606 public static int checkComponentPermission(String permission, int uid, 3607 int owningUid, boolean exported) { 3608 // Root, system server get to do everything. 3609 final int appId = UserHandle.getAppId(uid); 3610 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3611 return PackageManager.PERMISSION_GRANTED; 3612 } 3613 // Isolated processes don't get any permissions. 3614 if (UserHandle.isIsolated(uid)) { 3615 return PackageManager.PERMISSION_DENIED; 3616 } 3617 // If there is a uid that owns whatever is being accessed, it has 3618 // blanket access to it regardless of the permissions it requires. 3619 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3620 return PackageManager.PERMISSION_GRANTED; 3621 } 3622 // If the target is not exported, then nobody else can get to it. 3623 if (!exported) { 3624 /* 3625 RuntimeException here = new RuntimeException("here"); 3626 here.fillInStackTrace(); 3627 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3628 here); 3629 */ 3630 return PackageManager.PERMISSION_DENIED; 3631 } 3632 if (permission == null) { 3633 return PackageManager.PERMISSION_GRANTED; 3634 } 3635 try { 3636 return AppGlobals.getPackageManager() 3637 .checkUidPermission(permission, uid); 3638 } catch (RemoteException e) { 3639 throw e.rethrowFromSystemServer(); 3640 } 3641 } 3642 3643 /** @hide */ 3644 public static int checkUidPermission(String permission, int uid) { 3645 try { 3646 return AppGlobals.getPackageManager() 3647 .checkUidPermission(permission, uid); 3648 } catch (RemoteException e) { 3649 throw e.rethrowFromSystemServer(); 3650 } 3651 } 3652 3653 /** 3654 * @hide 3655 * Helper for dealing with incoming user arguments to system service calls. 3656 * Takes care of checking permissions and converting USER_CURRENT to the 3657 * actual current user. 3658 * 3659 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3660 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3661 * @param userId The user id argument supplied by the caller -- this is the user 3662 * they want to run as. 3663 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3664 * to get a USER_ALL returned and deal with it correctly. If false, 3665 * an exception will be thrown if USER_ALL is supplied. 3666 * @param requireFull If true, the caller must hold 3667 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3668 * different user than their current process; otherwise they must hold 3669 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3670 * @param name Optional textual name of the incoming call; only for generating error messages. 3671 * @param callerPackage Optional package name of caller; only for error messages. 3672 * 3673 * @return Returns the user ID that the call should run as. Will always be a concrete 3674 * user number, unless <var>allowAll</var> is true in which case it could also be 3675 * USER_ALL. 3676 */ 3677 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3678 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3679 if (UserHandle.getUserId(callingUid) == userId) { 3680 return userId; 3681 } 3682 try { 3683 return getService().handleIncomingUser(callingPid, 3684 callingUid, userId, allowAll, requireFull, name, callerPackage); 3685 } catch (RemoteException e) { 3686 throw e.rethrowFromSystemServer(); 3687 } 3688 } 3689 3690 /** 3691 * Gets the userId of the current foreground user. Requires system permissions. 3692 * @hide 3693 */ 3694 @SystemApi 3695 @RequiresPermission(anyOf = { 3696 "android.permission.INTERACT_ACROSS_USERS", 3697 "android.permission.INTERACT_ACROSS_USERS_FULL" 3698 }) 3699 public static int getCurrentUser() { 3700 UserInfo ui; 3701 try { 3702 ui = getService().getCurrentUser(); 3703 return ui != null ? ui.id : 0; 3704 } catch (RemoteException e) { 3705 throw e.rethrowFromSystemServer(); 3706 } 3707 } 3708 3709 /** 3710 * @param userid the user's id. Zero indicates the default user. 3711 * @hide 3712 */ 3713 public boolean switchUser(int userid) { 3714 try { 3715 return getService().switchUser(userid); 3716 } catch (RemoteException e) { 3717 throw e.rethrowFromSystemServer(); 3718 } 3719 } 3720 3721 /** 3722 * Logs out current current foreground user by switching to the system user and stopping the 3723 * user being switched from. 3724 * @hide 3725 */ 3726 public static void logoutCurrentUser() { 3727 int currentUser = ActivityManager.getCurrentUser(); 3728 if (currentUser != UserHandle.USER_SYSTEM) { 3729 try { 3730 getService().switchUser(UserHandle.USER_SYSTEM); 3731 getService().stopUser(currentUser, /* force= */ false, null); 3732 } catch (RemoteException e) { 3733 e.rethrowFromSystemServer(); 3734 } 3735 } 3736 } 3737 3738 /** {@hide} */ 3739 public static final int FLAG_OR_STOPPED = 1 << 0; 3740 /** {@hide} */ 3741 public static final int FLAG_AND_LOCKED = 1 << 1; 3742 /** {@hide} */ 3743 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3744 /** {@hide} */ 3745 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3746 3747 /** 3748 * Return whether the given user is actively running. This means that 3749 * the user is in the "started" state, not "stopped" -- it is currently 3750 * allowed to run code through scheduled alarms, receiving broadcasts, 3751 * etc. A started user may be either the current foreground user or a 3752 * background user; the result here does not distinguish between the two. 3753 * @param userId the user's id. Zero indicates the default user. 3754 * @hide 3755 */ 3756 public boolean isUserRunning(int userId) { 3757 try { 3758 return getService().isUserRunning(userId, 0); 3759 } catch (RemoteException e) { 3760 throw e.rethrowFromSystemServer(); 3761 } 3762 } 3763 3764 /** {@hide} */ 3765 public boolean isVrModePackageEnabled(ComponentName component) { 3766 try { 3767 return getService().isVrModePackageEnabled(component); 3768 } catch (RemoteException e) { 3769 throw e.rethrowFromSystemServer(); 3770 } 3771 } 3772 3773 /** 3774 * Perform a system dump of various state associated with the given application 3775 * package name. This call blocks while the dump is being performed, so should 3776 * not be done on a UI thread. The data will be written to the given file 3777 * descriptor as text. 3778 * @param fd The file descriptor that the dump should be written to. The file 3779 * descriptor is <em>not</em> closed by this function; the caller continues to 3780 * own it. 3781 * @param packageName The name of the package that is to be dumped. 3782 */ 3783 @RequiresPermission(Manifest.permission.DUMP) 3784 public void dumpPackageState(FileDescriptor fd, String packageName) { 3785 dumpPackageStateStatic(fd, packageName); 3786 } 3787 3788 /** 3789 * @hide 3790 */ 3791 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3792 FileOutputStream fout = new FileOutputStream(fd); 3793 PrintWriter pw = new FastPrintWriter(fout); 3794 dumpService(pw, fd, "package", new String[] { packageName }); 3795 pw.println(); 3796 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3797 "-a", "package", packageName }); 3798 pw.println(); 3799 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3800 pw.println(); 3801 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3802 pw.println(); 3803 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3804 pw.println(); 3805 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3806 pw.flush(); 3807 } 3808 3809 /** 3810 * @hide 3811 */ 3812 public static boolean isSystemReady() { 3813 if (!sSystemReady) { 3814 if (ActivityThread.isSystem()) { 3815 sSystemReady = 3816 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3817 } else { 3818 // Since this is being called from outside system server, system should be 3819 // ready by now. 3820 sSystemReady = true; 3821 } 3822 } 3823 return sSystemReady; 3824 } 3825 3826 /** 3827 * @hide 3828 */ 3829 public static void broadcastStickyIntent(Intent intent, int userId) { 3830 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3831 } 3832 3833 /** 3834 * Convenience for sending a sticky broadcast. For internal use only. 3835 * 3836 * @hide 3837 */ 3838 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3839 try { 3840 getService().broadcastIntent( 3841 null, intent, null, null, Activity.RESULT_OK, null, null, 3842 null /*permission*/, appOp, null, false, true, userId); 3843 } catch (RemoteException ex) { 3844 } 3845 } 3846 3847 /** 3848 * @hide 3849 */ 3850 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3851 String tag) { 3852 try { 3853 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3854 sourceUid, sourcePkg, tag); 3855 } catch (RemoteException ex) { 3856 } 3857 } 3858 3859 /** 3860 * @hide 3861 */ 3862 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3863 try { 3864 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3865 } catch (RemoteException ex) { 3866 } 3867 } 3868 3869 /** 3870 * @hide 3871 */ 3872 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3873 try { 3874 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3875 } catch (RemoteException ex) { 3876 } 3877 } 3878 3879 /** 3880 * @hide 3881 */ 3882 public static IActivityManager getService() { 3883 return IActivityManagerSingleton.get(); 3884 } 3885 3886 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3887 new Singleton<IActivityManager>() { 3888 @Override 3889 protected IActivityManager create() { 3890 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3891 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3892 return am; 3893 } 3894 }; 3895 3896 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3897 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3898 IBinder service = ServiceManager.checkService(name); 3899 if (service == null) { 3900 pw.println(" (Service not found)"); 3901 return; 3902 } 3903 TransferPipe tp = null; 3904 try { 3905 pw.flush(); 3906 tp = new TransferPipe(); 3907 tp.setBufferPrefix(" "); 3908 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3909 tp.go(fd, 10000); 3910 } catch (Throwable e) { 3911 if (tp != null) { 3912 tp.kill(); 3913 } 3914 pw.println("Failure dumping service:"); 3915 e.printStackTrace(pw); 3916 } 3917 } 3918 3919 /** 3920 * Request that the system start watching for the calling process to exceed a pss 3921 * size as given here. Once called, the system will look for any occasions where it 3922 * sees the associated process with a larger pss size and, when this happens, automatically 3923 * pull a heap dump from it and allow the user to share the data. Note that this request 3924 * continues running even if the process is killed and restarted. To remove the watch, 3925 * use {@link #clearWatchHeapLimit()}. 3926 * 3927 * <p>This API only work if the calling process has been marked as 3928 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3929 * (userdebug or eng) build.</p> 3930 * 3931 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3932 * handle heap limit reports themselves.</p> 3933 * 3934 * @param pssSize The size in bytes to set the limit at. 3935 */ 3936 public void setWatchHeapLimit(long pssSize) { 3937 try { 3938 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3939 mContext.getPackageName()); 3940 } catch (RemoteException e) { 3941 throw e.rethrowFromSystemServer(); 3942 } 3943 } 3944 3945 /** 3946 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3947 * If your package has an activity handling this action, it will be launched with the 3948 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3949 * match the activty must support this action and a MIME type of "*/*". 3950 */ 3951 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3952 3953 /** 3954 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3955 */ 3956 public void clearWatchHeapLimit() { 3957 try { 3958 getService().setDumpHeapDebugLimit(null, 0, 0, null); 3959 } catch (RemoteException e) { 3960 throw e.rethrowFromSystemServer(); 3961 } 3962 } 3963 3964 /** 3965 * Return whether currently in lock task mode. When in this mode 3966 * no new tasks can be created or switched to. 3967 * 3968 * @see Activity#startLockTask() 3969 * 3970 * @deprecated Use {@link #getLockTaskModeState} instead. 3971 */ 3972 @Deprecated 3973 public boolean isInLockTaskMode() { 3974 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3975 } 3976 3977 /** 3978 * Return the current state of task locking. The three possible outcomes 3979 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3980 * and {@link #LOCK_TASK_MODE_PINNED}. 3981 * 3982 * @see Activity#startLockTask() 3983 */ 3984 public int getLockTaskModeState() { 3985 try { 3986 return getService().getLockTaskModeState(); 3987 } catch (RemoteException e) { 3988 throw e.rethrowFromSystemServer(); 3989 } 3990 } 3991 3992 /** 3993 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 3994 * thread can be a VR thread in a process at a time, and that thread may be subject to 3995 * restrictions on the amount of time it can run. 3996 * 3997 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 3998 * method will return to normal operation, and calling this method will do nothing while 3999 * persistent VR mode is enabled. 4000 * 4001 * To reset the VR thread for an application, a tid of 0 can be passed. 4002 * 4003 * @see android.os.Process#myTid() 4004 * @param tid tid of the VR thread 4005 */ 4006 public static void setVrThread(int tid) { 4007 try { 4008 getService().setVrThread(tid); 4009 } catch (RemoteException e) { 4010 // pass 4011 } 4012 } 4013 4014 /** 4015 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4016 * beyond a single process. Only one thread can be a 4017 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4018 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4019 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4020 * persistent VR thread loses its new scheduling priority; this method must be called again to 4021 * set the persistent thread. 4022 * 4023 * To reset the persistent VR thread, a tid of 0 can be passed. 4024 * 4025 * @see android.os.Process#myTid() 4026 * @param tid tid of the VR thread 4027 * @hide 4028 */ 4029 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4030 public static void setPersistentVrThread(int tid) { 4031 try { 4032 getService().setPersistentVrThread(tid); 4033 } catch (RemoteException e) { 4034 // pass 4035 } 4036 } 4037 4038 /** 4039 * The AppTask allows you to manage your own application's tasks. 4040 * See {@link android.app.ActivityManager#getAppTasks()} 4041 */ 4042 public static class AppTask { 4043 private IAppTask mAppTaskImpl; 4044 4045 /** @hide */ 4046 public AppTask(IAppTask task) { 4047 mAppTaskImpl = task; 4048 } 4049 4050 /** 4051 * Finishes all activities in this task and removes it from the recent tasks list. 4052 */ 4053 public void finishAndRemoveTask() { 4054 try { 4055 mAppTaskImpl.finishAndRemoveTask(); 4056 } catch (RemoteException e) { 4057 throw e.rethrowFromSystemServer(); 4058 } 4059 } 4060 4061 /** 4062 * Get the RecentTaskInfo associated with this task. 4063 * 4064 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4065 */ 4066 public RecentTaskInfo getTaskInfo() { 4067 try { 4068 return mAppTaskImpl.getTaskInfo(); 4069 } catch (RemoteException e) { 4070 throw e.rethrowFromSystemServer(); 4071 } 4072 } 4073 4074 /** 4075 * Bring this task to the foreground. If it contains activities, they will be 4076 * brought to the foreground with it and their instances re-created if needed. 4077 * If it doesn't contain activities, the root activity of the task will be 4078 * re-launched. 4079 */ 4080 public void moveToFront() { 4081 try { 4082 mAppTaskImpl.moveToFront(); 4083 } catch (RemoteException e) { 4084 throw e.rethrowFromSystemServer(); 4085 } 4086 } 4087 4088 /** 4089 * Start an activity in this task. Brings the task to the foreground. If this task 4090 * is not currently active (that is, its id < 0), then a new activity for the given 4091 * Intent will be launched as the root of the task and the task brought to the 4092 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4093 * an activity to launch in a new task, then a new activity for the given Intent will 4094 * be launched on top of the task and the task brought to the foreground. If this 4095 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4096 * or would otherwise be launched in to a new task, then the activity not launched but 4097 * this task be brought to the foreground and a new intent delivered to the top 4098 * activity if appropriate. 4099 * 4100 * <p>In other words, you generally want to use an Intent here that does not specify 4101 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4102 * and let the system do the right thing.</p> 4103 * 4104 * @param intent The Intent describing the new activity to be launched on the task. 4105 * @param options Optional launch options. 4106 * 4107 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4108 */ 4109 public void startActivity(Context context, Intent intent, Bundle options) { 4110 ActivityThread thread = ActivityThread.currentActivityThread(); 4111 thread.getInstrumentation().execStartActivityFromAppTask(context, 4112 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4113 } 4114 4115 /** 4116 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4117 * Intent of this AppTask. 4118 * 4119 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4120 * be set; otherwise, it will be cleared. 4121 */ 4122 public void setExcludeFromRecents(boolean exclude) { 4123 try { 4124 mAppTaskImpl.setExcludeFromRecents(exclude); 4125 } catch (RemoteException e) { 4126 throw e.rethrowFromSystemServer(); 4127 } 4128 } 4129 } 4130} 4131