ActivityManager.java revision bf15587d0d7522aabfbc975738d8fd08aef3c40f
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.DrawableRes; 21import android.annotation.IntDef; 22import android.annotation.NonNull; 23import android.annotation.Nullable; 24import android.annotation.RequiresPermission; 25import android.annotation.SystemApi; 26import android.annotation.SystemService; 27import android.annotation.TestApi; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.UriPermission; 32import android.content.pm.ActivityInfo; 33import android.content.pm.ApplicationInfo; 34import android.content.pm.ConfigurationInfo; 35import android.content.pm.IPackageDataObserver; 36import android.content.pm.PackageManager; 37import android.content.pm.ParceledListSlice; 38import android.content.pm.UserInfo; 39import android.content.res.Configuration; 40import android.content.res.Resources; 41import android.graphics.Bitmap; 42import android.graphics.Canvas; 43import android.graphics.Color; 44import android.graphics.GraphicBuffer; 45import android.graphics.Matrix; 46import android.graphics.Point; 47import android.graphics.Rect; 48import android.os.BatteryStats; 49import android.os.Binder; 50import android.os.Build; 51import android.os.Build.VERSION_CODES; 52import android.os.Bundle; 53import android.os.Debug; 54import android.os.Handler; 55import android.os.IBinder; 56import android.os.Parcel; 57import android.os.Parcelable; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.ServiceManager; 61import android.os.SystemProperties; 62import android.os.UserHandle; 63import android.text.TextUtils; 64import android.util.ArrayMap; 65import android.util.DisplayMetrics; 66import android.util.Singleton; 67import android.util.Size; 68 69import com.android.internal.app.procstats.ProcessStats; 70import com.android.internal.os.RoSystemProperties; 71import com.android.internal.os.TransferPipe; 72import com.android.internal.util.FastPrintWriter; 73import com.android.server.LocalServices; 74 75import org.xmlpull.v1.XmlSerializer; 76 77import java.io.FileDescriptor; 78import java.io.FileOutputStream; 79import java.io.IOException; 80import java.io.PrintWriter; 81import java.lang.annotation.Retention; 82import java.lang.annotation.RetentionPolicy; 83import java.util.ArrayList; 84import java.util.List; 85 86/** 87 * <p> 88 * This class gives information about, and interacts 89 * with, activities, services, and the containing 90 * process. 91 * </p> 92 * 93 * <p> 94 * A number of the methods in this class are for 95 * debugging or informational purposes and they should 96 * not be used to affect any runtime behavior of 97 * your app. These methods are called out as such in 98 * the method level documentation. 99 * </p> 100 * 101 *<p> 102 * Most application developers should not have the need to 103 * use this class, most of whose methods are for specialized 104 * use cases. However, a few methods are more broadly applicable. 105 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 106 * enables your app to detect whether it is running on a low-memory device, 107 * and behave accordingly. 108 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 109 * is for apps with reset-data functionality. 110 * </p> 111 * 112 * <p> 113 * In some special use cases, where an app interacts with 114 * its Task stack, the app may use the 115 * {@link android.app.ActivityManager.AppTask} and 116 * {@link android.app.ActivityManager.RecentTaskInfo} inner 117 * classes. However, in general, the methods in this class should 118 * be used for testing and debugging purposes only. 119 * </p> 120 */ 121@SystemService(Context.ACTIVITY_SERVICE) 122public class ActivityManager { 123 private static String TAG = "ActivityManager"; 124 125 private static int gMaxRecentTasks = -1; 126 127 private final Context mContext; 128 129 private static volatile boolean sSystemReady = false; 130 131 132 private static final int FIRST_START_FATAL_ERROR_CODE = -100; 133 private static final int LAST_START_FATAL_ERROR_CODE = -1; 134 private static final int FIRST_START_SUCCESS_CODE = 0; 135 private static final int LAST_START_SUCCESS_CODE = 99; 136 private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; 137 private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; 138 139 static final class UidObserver extends IUidObserver.Stub { 140 final OnUidImportanceListener mListener; 141 final Context mContext; 142 143 UidObserver(OnUidImportanceListener listener, Context clientContext) { 144 mListener = listener; 145 mContext = clientContext; 146 } 147 148 @Override 149 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 150 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 151 procState, mContext)); 152 } 153 154 @Override 155 public void onUidGone(int uid, boolean disabled) { 156 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 157 } 158 159 @Override 160 public void onUidActive(int uid) { 161 } 162 163 @Override 164 public void onUidIdle(int uid, boolean disabled) { 165 } 166 167 @Override public void onUidCachedChanged(int uid, boolean cached) { 168 } 169 } 170 171 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 172 173 /** 174 * Defines acceptable types of bugreports. 175 * @hide 176 */ 177 @Retention(RetentionPolicy.SOURCE) 178 @IntDef({ 179 BUGREPORT_OPTION_FULL, 180 BUGREPORT_OPTION_INTERACTIVE, 181 BUGREPORT_OPTION_REMOTE, 182 BUGREPORT_OPTION_WEAR, 183 BUGREPORT_OPTION_TELEPHONY 184 }) 185 public @interface BugreportMode {} 186 /** 187 * Takes a bugreport without user interference (and hence causing less 188 * interference to the system), but includes all sections. 189 * @hide 190 */ 191 public static final int BUGREPORT_OPTION_FULL = 0; 192 /** 193 * Allows user to monitor progress and enter additional data; might not include all 194 * sections. 195 * @hide 196 */ 197 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 198 /** 199 * Takes a bugreport requested remotely by administrator of the Device Owner app, 200 * not the device's user. 201 * @hide 202 */ 203 public static final int BUGREPORT_OPTION_REMOTE = 2; 204 /** 205 * Takes a bugreport on a wearable device. 206 * @hide 207 */ 208 public static final int BUGREPORT_OPTION_WEAR = 3; 209 210 /** 211 * Takes a lightweight version of bugreport that only includes a few, urgent sections 212 * used to report telephony bugs. 213 * @hide 214 */ 215 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 216 217 /** 218 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 219 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 220 * uninstalled in lieu of the declaring one. The package named here must be 221 * signed with the same certificate as the one declaring the {@code <meta-data>}. 222 */ 223 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 224 225 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 226 // result is properly categorized. 227 228 /** 229 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 230 * @hide 231 */ 232 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 233 234 /** 235 * Result for IActivityManager.startVoiceActivity: active session does not match 236 * the requesting token. 237 * @hide 238 */ 239 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 240 241 /** 242 * Result for IActivityManager.startActivity: trying to start a background user 243 * activity that shouldn't be displayed for all users. 244 * @hide 245 */ 246 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 247 248 /** 249 * Result for IActivityManager.startActivity: trying to start an activity under voice 250 * control when that activity does not support the VOICE category. 251 * @hide 252 */ 253 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 254 255 /** 256 * Result for IActivityManager.startActivity: an error where the 257 * start had to be canceled. 258 * @hide 259 */ 260 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 261 262 /** 263 * Result for IActivityManager.startActivity: an error where the 264 * thing being started is not an activity. 265 * @hide 266 */ 267 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 268 269 /** 270 * Result for IActivityManager.startActivity: an error where the 271 * caller does not have permission to start the activity. 272 * @hide 273 */ 274 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 275 276 /** 277 * Result for IActivityManager.startActivity: an error where the 278 * caller has requested both to forward a result and to receive 279 * a result. 280 * @hide 281 */ 282 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 283 284 /** 285 * Result for IActivityManager.startActivity: an error where the 286 * requested class is not found. 287 * @hide 288 */ 289 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 290 291 /** 292 * Result for IActivityManager.startActivity: an error where the 293 * given Intent could not be resolved to an activity. 294 * @hide 295 */ 296 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 297 298 /** 299 * Result for IActivityManager.startAssistantActivity: active session is currently hidden. 300 * @hide 301 */ 302 public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; 303 304 /** 305 * Result for IActivityManager.startAssistantActivity: active session does not match 306 * the requesting token. 307 * @hide 308 */ 309 public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; 310 311 /** 312 * Result for IActivityManaqer.startActivity: the activity was started 313 * successfully as normal. 314 * @hide 315 */ 316 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 317 318 /** 319 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 320 * be executed if it is the recipient, and that is indeed the case. 321 * @hide 322 */ 323 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 324 325 /** 326 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 327 * a task was simply brought to the foreground. 328 * @hide 329 */ 330 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 331 332 /** 333 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 334 * the given Intent was given to the existing top activity. 335 * @hide 336 */ 337 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 338 339 /** 340 * Result for IActivityManaqer.startActivity: request was canceled because 341 * app switches are temporarily canceled to ensure the user's last request 342 * (such as pressing home) is performed. 343 * @hide 344 */ 345 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 346 347 /** 348 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 349 * while in Lock Task Mode. 350 * @hide 351 */ 352 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 353 FIRST_START_NON_FATAL_ERROR_CODE + 1; 354 355 /** 356 * Result for IActivityManaqer.startActivity: a new activity start was aborted. Never returned 357 * externally. 358 * @hide 359 */ 360 public static final int START_ABORTED = FIRST_START_NON_FATAL_ERROR_CODE + 2; 361 362 /** 363 * Flag for IActivityManaqer.startActivity: do special start mode where 364 * a new activity is launched only if it is needed. 365 * @hide 366 */ 367 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 368 369 /** 370 * Flag for IActivityManaqer.startActivity: launch the app for 371 * debugging. 372 * @hide 373 */ 374 public static final int START_FLAG_DEBUG = 1<<1; 375 376 /** 377 * Flag for IActivityManaqer.startActivity: launch the app for 378 * allocation tracking. 379 * @hide 380 */ 381 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 382 383 /** 384 * Flag for IActivityManaqer.startActivity: launch the app with 385 * native debugging support. 386 * @hide 387 */ 388 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 389 390 /** 391 * Result for IActivityManaqer.broadcastIntent: success! 392 * @hide 393 */ 394 public static final int BROADCAST_SUCCESS = 0; 395 396 /** 397 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 398 * a sticky intent without appropriate permission. 399 * @hide 400 */ 401 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 402 403 /** 404 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 405 * to a stopped user. Fail. 406 * @hide 407 */ 408 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 409 410 /** 411 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 412 * for a sendBroadcast operation. 413 * @hide 414 */ 415 public static final int INTENT_SENDER_BROADCAST = 1; 416 417 /** 418 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 419 * for a startActivity operation. 420 * @hide 421 */ 422 public static final int INTENT_SENDER_ACTIVITY = 2; 423 424 /** 425 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 426 * for an activity result operation. 427 * @hide 428 */ 429 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 430 431 /** 432 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 433 * for a startService operation. 434 * @hide 435 */ 436 public static final int INTENT_SENDER_SERVICE = 4; 437 438 /** 439 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 440 * for a startForegroundService operation. 441 * @hide 442 */ 443 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 444 445 /** @hide User operation call: success! */ 446 public static final int USER_OP_SUCCESS = 0; 447 448 /** @hide User operation call: given user id is not known. */ 449 public static final int USER_OP_UNKNOWN_USER = -1; 450 451 /** @hide User operation call: given user id is the current user, can't be stopped. */ 452 public static final int USER_OP_IS_CURRENT = -2; 453 454 /** @hide User operation call: system user can't be stopped. */ 455 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 456 457 /** @hide User operation call: one of related users cannot be stopped. */ 458 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 459 460 /** @hide Not a real process state. */ 461 public static final int PROCESS_STATE_UNKNOWN = -1; 462 463 /** @hide Process is a persistent system process. */ 464 public static final int PROCESS_STATE_PERSISTENT = 0; 465 466 /** @hide Process is a persistent system process and is doing UI. */ 467 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 468 469 /** @hide Process is hosting the current top activities. Note that this covers 470 * all activities that are visible to the user. */ 471 public static final int PROCESS_STATE_TOP = 2; 472 473 /** @hide Process is hosting a foreground service due to a system binding. */ 474 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 475 476 /** @hide Process is hosting a foreground service. */ 477 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 478 479 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 480 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 481 482 /** @hide Process is important to the user, and something they are aware of. */ 483 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 484 485 /** @hide Process is important to the user, but not something they are aware of. */ 486 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 487 488 /** @hide Process is in the background transient so we will try to keep running. */ 489 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 490 491 /** @hide Process is in the background running a backup/restore operation. */ 492 public static final int PROCESS_STATE_BACKUP = 9; 493 494 /** @hide Process is in the background, but it can't restore its state so we want 495 * to try to avoid killing it. */ 496 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 497 498 /** @hide Process is in the background running a service. Unlike oom_adj, this level 499 * is used for both the normal running in background state and the executing 500 * operations state. */ 501 public static final int PROCESS_STATE_SERVICE = 11; 502 503 /** @hide Process is in the background running a receiver. Note that from the 504 * perspective of oom_adj, receivers run at a higher foreground level, but for our 505 * prioritization here that is not necessary and putting them below services means 506 * many fewer changes in some process states as they receive broadcasts. */ 507 public static final int PROCESS_STATE_RECEIVER = 12; 508 509 /** @hide Process is in the background but hosts the home activity. */ 510 public static final int PROCESS_STATE_HOME = 13; 511 512 /** @hide Process is in the background but hosts the last shown activity. */ 513 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 514 515 /** @hide Process is being cached for later use and contains activities. */ 516 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 517 518 /** @hide Process is being cached for later use and is a client of another cached 519 * process that contains activities. */ 520 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 521 522 /** @hide Process is being cached for later use and is empty. */ 523 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 524 525 /** @hide Process does not exist. */ 526 public static final int PROCESS_STATE_NONEXISTENT = 18; 527 528 // NOTE: If PROCESS_STATEs are added or changed, then new fields must be added 529 // to frameworks/base/core/proto/android/app/activitymanager.proto and the following method must 530 // be updated to correctly map between them. 531 /** 532 * Maps ActivityManager.PROCESS_STATE_ values to ActivityManagerProto.ProcessState enum. 533 * 534 * @param amInt a process state of the form ActivityManager.PROCESS_STATE_ 535 * @return the value of the corresponding android.app.ActivityManagerProto's ProcessState enum. 536 * @hide 537 */ 538 public static final int processStateAmToProto(int amInt) { 539 return amInt * 100; 540 } 541 542 /** @hide The lowest process state number */ 543 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 544 545 /** @hide The highest process state number */ 546 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 547 548 /** @hide Should this process state be considered a background state? */ 549 public static final boolean isProcStateBackground(int procState) { 550 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 551 } 552 553 /** @hide requestType for assist context: only basic information. */ 554 public static final int ASSIST_CONTEXT_BASIC = 0; 555 556 /** @hide requestType for assist context: generate full AssistStructure. */ 557 public static final int ASSIST_CONTEXT_FULL = 1; 558 559 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 560 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 561 562 /** @hide Flag for registerUidObserver: report changes in process state. */ 563 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 564 565 /** @hide Flag for registerUidObserver: report uid gone. */ 566 public static final int UID_OBSERVER_GONE = 1<<1; 567 568 /** @hide Flag for registerUidObserver: report uid has become idle. */ 569 public static final int UID_OBSERVER_IDLE = 1<<2; 570 571 /** @hide Flag for registerUidObserver: report uid has become active. */ 572 public static final int UID_OBSERVER_ACTIVE = 1<<3; 573 574 /** @hide Flag for registerUidObserver: report uid cached state has changed. */ 575 public static final int UID_OBSERVER_CACHED = 1<<4; 576 577 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 578 public static final int APP_START_MODE_NORMAL = 0; 579 580 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 581 public static final int APP_START_MODE_DELAYED = 1; 582 583 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 584 * rigid errors (throwing exception). */ 585 public static final int APP_START_MODE_DELAYED_RIGID = 2; 586 587 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 588 * launches; this is the mode for ephemeral apps. */ 589 public static final int APP_START_MODE_DISABLED = 3; 590 591 /** 592 * Lock task mode is not active. 593 */ 594 public static final int LOCK_TASK_MODE_NONE = 0; 595 596 /** 597 * Full lock task mode is active. 598 */ 599 public static final int LOCK_TASK_MODE_LOCKED = 1; 600 601 /** 602 * App pinning mode is active. 603 */ 604 public static final int LOCK_TASK_MODE_PINNED = 2; 605 606 Point mAppTaskThumbnailSize; 607 608 /*package*/ ActivityManager(Context context, Handler handler) { 609 mContext = context; 610 } 611 612 /** 613 * Returns whether the launch was successful. 614 * @hide 615 */ 616 public static final boolean isStartResultSuccessful(int result) { 617 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 618 } 619 620 /** 621 * Returns whether the launch result was a fatal error. 622 * @hide 623 */ 624 public static final boolean isStartResultFatalError(int result) { 625 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 626 } 627 628 /** 629 * Screen compatibility mode: the application most always run in 630 * compatibility mode. 631 * @hide 632 */ 633 public static final int COMPAT_MODE_ALWAYS = -1; 634 635 /** 636 * Screen compatibility mode: the application can never run in 637 * compatibility mode. 638 * @hide 639 */ 640 public static final int COMPAT_MODE_NEVER = -2; 641 642 /** 643 * Screen compatibility mode: unknown. 644 * @hide 645 */ 646 public static final int COMPAT_MODE_UNKNOWN = -3; 647 648 /** 649 * Screen compatibility mode: the application currently has compatibility 650 * mode disabled. 651 * @hide 652 */ 653 public static final int COMPAT_MODE_DISABLED = 0; 654 655 /** 656 * Screen compatibility mode: the application currently has compatibility 657 * mode enabled. 658 * @hide 659 */ 660 public static final int COMPAT_MODE_ENABLED = 1; 661 662 /** 663 * Screen compatibility mode: request to toggle the application's 664 * compatibility mode. 665 * @hide 666 */ 667 public static final int COMPAT_MODE_TOGGLE = 2; 668 669 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 670 SystemProperties.getBoolean("debug.force_low_ram", false); 671 672 /** @hide */ 673 @TestApi 674 public static class StackId { 675 676 private StackId() { 677 } 678 679 /** Invalid stack ID. */ 680 public static final int INVALID_STACK_ID = -1; 681 682 } 683 684 /** 685 * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} 686 * which specifies the position of the created docked stack at the top half of the screen if 687 * in portrait mode or at the left half of the screen if in landscape mode. 688 * @hide 689 */ 690 public static final int SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT = 0; 691 692 /** 693 * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} 694 * which 695 * specifies the position of the created docked stack at the bottom half of the screen if 696 * in portrait mode or at the right half of the screen if in landscape mode. 697 * @hide 698 */ 699 public static final int SPLIT_SCREEN_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 700 701 /** 702 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 703 * that the resize doesn't need to preserve the window, and can be skipped if bounds 704 * is unchanged. This mode is used by window manager in most cases. 705 * @hide 706 */ 707 public static final int RESIZE_MODE_SYSTEM = 0; 708 709 /** 710 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 711 * that the resize should preserve the window if possible. 712 * @hide 713 */ 714 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 715 716 /** 717 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 718 * that the resize should be performed even if the bounds appears unchanged. 719 * @hide 720 */ 721 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 722 723 /** 724 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 725 * manager during a screen rotation. 726 * @hide 727 */ 728 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 729 730 /** 731 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 732 * resize is due to a drag action. 733 * @hide 734 */ 735 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 736 737 /** 738 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 739 * that the resize should preserve the window if possible, and should not be skipped 740 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 741 * is ending. 742 * @hide 743 */ 744 public static final int RESIZE_MODE_USER_FORCED = 745 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 746 747 /** @hide */ 748 public int getFrontActivityScreenCompatMode() { 749 try { 750 return getService().getFrontActivityScreenCompatMode(); 751 } catch (RemoteException e) { 752 throw e.rethrowFromSystemServer(); 753 } 754 } 755 756 /** @hide */ 757 public void setFrontActivityScreenCompatMode(int mode) { 758 try { 759 getService().setFrontActivityScreenCompatMode(mode); 760 } catch (RemoteException e) { 761 throw e.rethrowFromSystemServer(); 762 } 763 } 764 765 /** @hide */ 766 public int getPackageScreenCompatMode(String packageName) { 767 try { 768 return getService().getPackageScreenCompatMode(packageName); 769 } catch (RemoteException e) { 770 throw e.rethrowFromSystemServer(); 771 } 772 } 773 774 /** @hide */ 775 public void setPackageScreenCompatMode(String packageName, int mode) { 776 try { 777 getService().setPackageScreenCompatMode(packageName, mode); 778 } catch (RemoteException e) { 779 throw e.rethrowFromSystemServer(); 780 } 781 } 782 783 /** @hide */ 784 public boolean getPackageAskScreenCompat(String packageName) { 785 try { 786 return getService().getPackageAskScreenCompat(packageName); 787 } catch (RemoteException e) { 788 throw e.rethrowFromSystemServer(); 789 } 790 } 791 792 /** @hide */ 793 public void setPackageAskScreenCompat(String packageName, boolean ask) { 794 try { 795 getService().setPackageAskScreenCompat(packageName, ask); 796 } catch (RemoteException e) { 797 throw e.rethrowFromSystemServer(); 798 } 799 } 800 801 /** 802 * Return the approximate per-application memory class of the current 803 * device. This gives you an idea of how hard a memory limit you should 804 * impose on your application to let the overall system work best. The 805 * returned value is in megabytes; the baseline Android memory class is 806 * 16 (which happens to be the Java heap limit of those devices); some 807 * device with more memory may return 24 or even higher numbers. 808 */ 809 public int getMemoryClass() { 810 return staticGetMemoryClass(); 811 } 812 813 /** @hide */ 814 static public int staticGetMemoryClass() { 815 // Really brain dead right now -- just take this from the configured 816 // vm heap size, and assume it is in megabytes and thus ends with "m". 817 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 818 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 819 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 820 } 821 return staticGetLargeMemoryClass(); 822 } 823 824 /** 825 * Return the approximate per-application memory class of the current 826 * device when an application is running with a large heap. This is the 827 * space available for memory-intensive applications; most applications 828 * should not need this amount of memory, and should instead stay with the 829 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 830 * This may be the same size as {@link #getMemoryClass()} on memory 831 * constrained devices, or it may be significantly larger on devices with 832 * a large amount of available RAM. 833 * 834 * <p>The is the size of the application's Dalvik heap if it has 835 * specified <code>android:largeHeap="true"</code> in its manifest. 836 */ 837 public int getLargeMemoryClass() { 838 return staticGetLargeMemoryClass(); 839 } 840 841 /** @hide */ 842 static public int staticGetLargeMemoryClass() { 843 // Really brain dead right now -- just take this from the configured 844 // vm heap size, and assume it is in megabytes and thus ends with "m". 845 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 846 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 847 } 848 849 /** 850 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 851 * is ultimately up to the device configuration, but currently it generally means 852 * something with 1GB or less of RAM. This is mostly intended to be used by apps 853 * to determine whether they should turn off certain features that require more RAM. 854 */ 855 public boolean isLowRamDevice() { 856 return isLowRamDeviceStatic(); 857 } 858 859 /** @hide */ 860 public static boolean isLowRamDeviceStatic() { 861 return RoSystemProperties.CONFIG_LOW_RAM || 862 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 863 } 864 865 /** 866 * Returns true if this is a small battery device. Exactly whether a device is considered to be 867 * small battery is ultimately up to the device configuration, but currently it generally means 868 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 869 * to determine whether certain features should be altered to account for a drastically smaller 870 * battery. 871 * @hide 872 */ 873 public static boolean isSmallBatteryDevice() { 874 return RoSystemProperties.CONFIG_SMALL_BATTERY; 875 } 876 877 /** 878 * Used by persistent processes to determine if they are running on a 879 * higher-end device so should be okay using hardware drawing acceleration 880 * (which tends to consume a lot more RAM). 881 * @hide 882 */ 883 static public boolean isHighEndGfx() { 884 return !isLowRamDeviceStatic() && 885 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 886 } 887 888 /** 889 * Return the maximum number of recents entries that we will maintain and show. 890 * @hide 891 */ 892 static public int getMaxRecentTasksStatic() { 893 if (gMaxRecentTasks < 0) { 894 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 895 } 896 return gMaxRecentTasks; 897 } 898 899 /** 900 * Return the default limit on the number of recents that an app can make. 901 * @hide 902 */ 903 static public int getDefaultAppRecentsLimitStatic() { 904 return getMaxRecentTasksStatic() / 6; 905 } 906 907 /** 908 * Return the maximum limit on the number of recents that an app can make. 909 * @hide 910 */ 911 static public int getMaxAppRecentsLimitStatic() { 912 return getMaxRecentTasksStatic() / 2; 913 } 914 915 /** 916 * Returns true if the system supports at least one form of multi-window. 917 * E.g. freeform, split-screen, picture-in-picture. 918 * @hide 919 */ 920 @TestApi 921 static public boolean supportsMultiWindow(Context context) { 922 // On watches, multi-window is used to present essential system UI, and thus it must be 923 // supported regardless of device memory characteristics. 924 boolean isWatch = context.getPackageManager().hasSystemFeature( 925 PackageManager.FEATURE_WATCH); 926 return (!isLowRamDeviceStatic() || isWatch) 927 && Resources.getSystem().getBoolean( 928 com.android.internal.R.bool.config_supportsMultiWindow); 929 } 930 931 /** 932 * Returns true if the system supports split screen multi-window. 933 * @hide 934 */ 935 @TestApi 936 static public boolean supportsSplitScreenMultiWindow(Context context) { 937 return supportsMultiWindow(context) 938 && Resources.getSystem().getBoolean( 939 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 940 } 941 942 /** @removed */ 943 @Deprecated 944 public static int getMaxNumPictureInPictureActions() { 945 return 3; 946 } 947 948 /** 949 * Information you can set and retrieve about the current activity within the recent task list. 950 */ 951 public static class TaskDescription implements Parcelable { 952 /** @hide */ 953 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 954 private static final String ATTR_TASKDESCRIPTIONLABEL = 955 ATTR_TASKDESCRIPTION_PREFIX + "label"; 956 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 957 ATTR_TASKDESCRIPTION_PREFIX + "color"; 958 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 959 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 960 private static final String ATTR_TASKDESCRIPTIONICON_FILENAME = 961 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 962 private static final String ATTR_TASKDESCRIPTIONICON_RESOURCE = 963 ATTR_TASKDESCRIPTION_PREFIX + "icon_resource"; 964 965 private String mLabel; 966 private Bitmap mIcon; 967 private int mIconRes; 968 private String mIconFilename; 969 private int mColorPrimary; 970 private int mColorBackground; 971 private int mStatusBarColor; 972 private int mNavigationBarColor; 973 974 /** 975 * Creates the TaskDescription to the specified values. 976 * 977 * @param label A label and description of the current state of this task. 978 * @param icon An icon that represents the current state of this task. 979 * @param colorPrimary A color to override the theme's primary color. This color must be 980 * opaque. 981 * @deprecated use TaskDescription constructor with icon resource instead 982 */ 983 @Deprecated 984 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 985 this(label, icon, 0, null, colorPrimary, 0, 0, 0); 986 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 987 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 988 } 989 } 990 991 /** 992 * Creates the TaskDescription to the specified values. 993 * 994 * @param label A label and description of the current state of this task. 995 * @param iconRes A drawable resource of an icon that represents the current state of this 996 * activity. 997 * @param colorPrimary A color to override the theme's primary color. This color must be 998 * opaque. 999 */ 1000 public TaskDescription(String label, @DrawableRes int iconRes, int colorPrimary) { 1001 this(label, null, iconRes, null, colorPrimary, 0, 0, 0); 1002 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1003 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1004 } 1005 } 1006 1007 /** 1008 * Creates the TaskDescription to the specified values. 1009 * 1010 * @param label A label and description of the current state of this activity. 1011 * @param icon An icon that represents the current state of this activity. 1012 * @deprecated use TaskDescription constructor with icon resource instead 1013 */ 1014 @Deprecated 1015 public TaskDescription(String label, Bitmap icon) { 1016 this(label, icon, 0, null, 0, 0, 0, 0); 1017 } 1018 1019 /** 1020 * Creates the TaskDescription to the specified values. 1021 * 1022 * @param label A label and description of the current state of this activity. 1023 * @param iconRes A drawable resource of an icon that represents the current state of this 1024 * activity. 1025 */ 1026 public TaskDescription(String label, @DrawableRes int iconRes) { 1027 this(label, null, iconRes, null, 0, 0, 0, 0); 1028 } 1029 1030 /** 1031 * Creates the TaskDescription to the specified values. 1032 * 1033 * @param label A label and description of the current state of this activity. 1034 */ 1035 public TaskDescription(String label) { 1036 this(label, null, 0, null, 0, 0, 0, 0); 1037 } 1038 1039 /** 1040 * Creates an empty TaskDescription. 1041 */ 1042 public TaskDescription() { 1043 this(null, null, 0, null, 0, 0, 0, 0); 1044 } 1045 1046 /** @hide */ 1047 public TaskDescription(String label, Bitmap bitmap, int iconRes, String iconFilename, 1048 int colorPrimary, int colorBackground, int statusBarColor, int navigationBarColor) { 1049 mLabel = label; 1050 mIcon = bitmap; 1051 mIconRes = iconRes; 1052 mIconFilename = iconFilename; 1053 mColorPrimary = colorPrimary; 1054 mColorBackground = colorBackground; 1055 mStatusBarColor = statusBarColor; 1056 mNavigationBarColor = navigationBarColor; 1057 } 1058 1059 /** 1060 * Creates a copy of another TaskDescription. 1061 */ 1062 public TaskDescription(TaskDescription td) { 1063 copyFrom(td); 1064 } 1065 1066 /** 1067 * Copies this the values from another TaskDescription. 1068 * @hide 1069 */ 1070 public void copyFrom(TaskDescription other) { 1071 mLabel = other.mLabel; 1072 mIcon = other.mIcon; 1073 mIconRes = other.mIconRes; 1074 mIconFilename = other.mIconFilename; 1075 mColorPrimary = other.mColorPrimary; 1076 mColorBackground = other.mColorBackground; 1077 mStatusBarColor = other.mStatusBarColor; 1078 mNavigationBarColor = other.mNavigationBarColor; 1079 } 1080 1081 /** 1082 * Copies this the values from another TaskDescription, but preserves the hidden fields 1083 * if they weren't set on {@code other} 1084 * @hide 1085 */ 1086 public void copyFromPreserveHiddenFields(TaskDescription other) { 1087 mLabel = other.mLabel; 1088 mIcon = other.mIcon; 1089 mIconRes = other.mIconRes; 1090 mIconFilename = other.mIconFilename; 1091 mColorPrimary = other.mColorPrimary; 1092 if (other.mColorBackground != 0) { 1093 mColorBackground = other.mColorBackground; 1094 } 1095 if (other.mStatusBarColor != 0) { 1096 mStatusBarColor = other.mStatusBarColor; 1097 } 1098 if (other.mNavigationBarColor != 0) { 1099 mNavigationBarColor = other.mNavigationBarColor; 1100 } 1101 } 1102 1103 private TaskDescription(Parcel source) { 1104 readFromParcel(source); 1105 } 1106 1107 /** 1108 * Sets the label for this task description. 1109 * @hide 1110 */ 1111 public void setLabel(String label) { 1112 mLabel = label; 1113 } 1114 1115 /** 1116 * Sets the primary color for this task description. 1117 * @hide 1118 */ 1119 public void setPrimaryColor(int primaryColor) { 1120 // Ensure that the given color is valid 1121 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1122 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1123 } 1124 mColorPrimary = primaryColor; 1125 } 1126 1127 /** 1128 * Sets the background color for this task description. 1129 * @hide 1130 */ 1131 public void setBackgroundColor(int backgroundColor) { 1132 // Ensure that the given color is valid 1133 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1134 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1135 } 1136 mColorBackground = backgroundColor; 1137 } 1138 1139 /** 1140 * @hide 1141 */ 1142 public void setStatusBarColor(int statusBarColor) { 1143 mStatusBarColor = statusBarColor; 1144 } 1145 1146 /** 1147 * @hide 1148 */ 1149 public void setNavigationBarColor(int navigationBarColor) { 1150 mNavigationBarColor = navigationBarColor; 1151 } 1152 1153 /** 1154 * Sets the icon for this task description. 1155 * @hide 1156 */ 1157 public void setIcon(Bitmap icon) { 1158 mIcon = icon; 1159 } 1160 1161 /** 1162 * Sets the icon resource for this task description. 1163 * @hide 1164 */ 1165 public void setIcon(int iconRes) { 1166 mIconRes = iconRes; 1167 } 1168 1169 /** 1170 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1171 * bitmap. 1172 * @hide 1173 */ 1174 public void setIconFilename(String iconFilename) { 1175 mIconFilename = iconFilename; 1176 mIcon = null; 1177 } 1178 1179 /** 1180 * @return The label and description of the current state of this task. 1181 */ 1182 public String getLabel() { 1183 return mLabel; 1184 } 1185 1186 /** 1187 * @return The icon that represents the current state of this task. 1188 */ 1189 public Bitmap getIcon() { 1190 if (mIcon != null) { 1191 return mIcon; 1192 } 1193 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1194 } 1195 1196 /** @hide */ 1197 @TestApi 1198 public int getIconResource() { 1199 return mIconRes; 1200 } 1201 1202 /** @hide */ 1203 @TestApi 1204 public String getIconFilename() { 1205 return mIconFilename; 1206 } 1207 1208 /** @hide */ 1209 public Bitmap getInMemoryIcon() { 1210 return mIcon; 1211 } 1212 1213 /** @hide */ 1214 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1215 if (iconFilename != null) { 1216 try { 1217 return getService().getTaskDescriptionIcon(iconFilename, 1218 userId); 1219 } catch (RemoteException e) { 1220 throw e.rethrowFromSystemServer(); 1221 } 1222 } 1223 return null; 1224 } 1225 1226 /** 1227 * @return The color override on the theme's primary color. 1228 */ 1229 public int getPrimaryColor() { 1230 return mColorPrimary; 1231 } 1232 1233 /** 1234 * @return The background color. 1235 * @hide 1236 */ 1237 public int getBackgroundColor() { 1238 return mColorBackground; 1239 } 1240 1241 /** 1242 * @hide 1243 */ 1244 public int getStatusBarColor() { 1245 return mStatusBarColor; 1246 } 1247 1248 /** 1249 * @hide 1250 */ 1251 public int getNavigationBarColor() { 1252 return mNavigationBarColor; 1253 } 1254 1255 /** @hide */ 1256 public void saveToXml(XmlSerializer out) throws IOException { 1257 if (mLabel != null) { 1258 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1259 } 1260 if (mColorPrimary != 0) { 1261 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1262 Integer.toHexString(mColorPrimary)); 1263 } 1264 if (mColorBackground != 0) { 1265 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1266 Integer.toHexString(mColorBackground)); 1267 } 1268 if (mIconFilename != null) { 1269 out.attribute(null, ATTR_TASKDESCRIPTIONICON_FILENAME, mIconFilename); 1270 } 1271 if (mIconRes != 0) { 1272 out.attribute(null, ATTR_TASKDESCRIPTIONICON_RESOURCE, Integer.toString(mIconRes)); 1273 } 1274 } 1275 1276 /** @hide */ 1277 public void restoreFromXml(String attrName, String attrValue) { 1278 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1279 setLabel(attrValue); 1280 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1281 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1282 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1283 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1284 } else if (ATTR_TASKDESCRIPTIONICON_FILENAME.equals(attrName)) { 1285 setIconFilename(attrValue); 1286 } else if (ATTR_TASKDESCRIPTIONICON_RESOURCE.equals(attrName)) { 1287 setIcon(Integer.parseInt(attrValue, 10)); 1288 } 1289 } 1290 1291 @Override 1292 public int describeContents() { 1293 return 0; 1294 } 1295 1296 @Override 1297 public void writeToParcel(Parcel dest, int flags) { 1298 if (mLabel == null) { 1299 dest.writeInt(0); 1300 } else { 1301 dest.writeInt(1); 1302 dest.writeString(mLabel); 1303 } 1304 if (mIcon == null) { 1305 dest.writeInt(0); 1306 } else { 1307 dest.writeInt(1); 1308 mIcon.writeToParcel(dest, 0); 1309 } 1310 dest.writeInt(mIconRes); 1311 dest.writeInt(mColorPrimary); 1312 dest.writeInt(mColorBackground); 1313 dest.writeInt(mStatusBarColor); 1314 dest.writeInt(mNavigationBarColor); 1315 if (mIconFilename == null) { 1316 dest.writeInt(0); 1317 } else { 1318 dest.writeInt(1); 1319 dest.writeString(mIconFilename); 1320 } 1321 } 1322 1323 public void readFromParcel(Parcel source) { 1324 mLabel = source.readInt() > 0 ? source.readString() : null; 1325 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1326 mIconRes = source.readInt(); 1327 mColorPrimary = source.readInt(); 1328 mColorBackground = source.readInt(); 1329 mStatusBarColor = source.readInt(); 1330 mNavigationBarColor = source.readInt(); 1331 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1332 } 1333 1334 public static final Creator<TaskDescription> CREATOR 1335 = new Creator<TaskDescription>() { 1336 public TaskDescription createFromParcel(Parcel source) { 1337 return new TaskDescription(source); 1338 } 1339 public TaskDescription[] newArray(int size) { 1340 return new TaskDescription[size]; 1341 } 1342 }; 1343 1344 @Override 1345 public String toString() { 1346 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1347 " IconRes: " + mIconRes + " IconFilename: " + mIconFilename + 1348 " colorPrimary: " + mColorPrimary + " colorBackground: " + mColorBackground + 1349 " statusBarColor: " + mColorBackground + 1350 " navigationBarColor: " + mNavigationBarColor; 1351 } 1352 } 1353 1354 /** 1355 * Information you can retrieve about tasks that the user has most recently 1356 * started or visited. 1357 */ 1358 public static class RecentTaskInfo implements Parcelable { 1359 /** 1360 * If this task is currently running, this is the identifier for it. 1361 * If it is not running, this will be -1. 1362 */ 1363 public int id; 1364 1365 /** 1366 * The true identifier of this task, valid even if it is not running. 1367 */ 1368 public int persistentId; 1369 1370 /** 1371 * The original Intent used to launch the task. You can use this 1372 * Intent to re-launch the task (if it is no longer running) or bring 1373 * the current task to the front. 1374 */ 1375 public Intent baseIntent; 1376 1377 /** 1378 * If this task was started from an alias, this is the actual 1379 * activity component that was initially started; the component of 1380 * the baseIntent in this case is the name of the actual activity 1381 * implementation that the alias referred to. Otherwise, this is null. 1382 */ 1383 public ComponentName origActivity; 1384 1385 /** 1386 * The actual activity component that started the task. 1387 * @hide 1388 */ 1389 @Nullable 1390 public ComponentName realActivity; 1391 1392 /** 1393 * Description of the task's last state. 1394 */ 1395 public CharSequence description; 1396 1397 /** 1398 * The id of the ActivityStack this Task was on most recently. 1399 * @hide 1400 */ 1401 public int stackId; 1402 1403 /** 1404 * The id of the user the task was running as. 1405 * @hide 1406 */ 1407 public int userId; 1408 1409 /** 1410 * The first time this task was active. 1411 * @hide 1412 */ 1413 public long firstActiveTime; 1414 1415 /** 1416 * The last time this task was active. 1417 * @hide 1418 */ 1419 public long lastActiveTime; 1420 1421 /** 1422 * The recent activity values for the highest activity in the stack to have set the values. 1423 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1424 */ 1425 public TaskDescription taskDescription; 1426 1427 /** 1428 * Task affiliation for grouping with other tasks. 1429 */ 1430 public int affiliatedTaskId; 1431 1432 /** 1433 * Task affiliation color of the source task with the affiliated task id. 1434 * 1435 * @hide 1436 */ 1437 public int affiliatedTaskColor; 1438 1439 /** 1440 * The component launched as the first activity in the task. 1441 * This can be considered the "application" of this task. 1442 */ 1443 public ComponentName baseActivity; 1444 1445 /** 1446 * The activity component at the top of the history stack of the task. 1447 * This is what the user is currently doing. 1448 */ 1449 public ComponentName topActivity; 1450 1451 /** 1452 * Number of activities in this task. 1453 */ 1454 public int numActivities; 1455 1456 /** 1457 * The bounds of the task. 1458 * @hide 1459 */ 1460 public Rect bounds; 1461 1462 /** 1463 * True if the task can go in the docked stack. 1464 * @hide 1465 */ 1466 public boolean supportsSplitScreenMultiWindow; 1467 1468 /** 1469 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1470 * @hide 1471 */ 1472 public int resizeMode; 1473 1474 /** 1475 * The current configuration this task is in. 1476 * @hide 1477 */ 1478 final public Configuration configuration = new Configuration(); 1479 1480 public RecentTaskInfo() { 1481 } 1482 1483 @Override 1484 public int describeContents() { 1485 return 0; 1486 } 1487 1488 @Override 1489 public void writeToParcel(Parcel dest, int flags) { 1490 dest.writeInt(id); 1491 dest.writeInt(persistentId); 1492 if (baseIntent != null) { 1493 dest.writeInt(1); 1494 baseIntent.writeToParcel(dest, 0); 1495 } else { 1496 dest.writeInt(0); 1497 } 1498 ComponentName.writeToParcel(origActivity, dest); 1499 ComponentName.writeToParcel(realActivity, dest); 1500 TextUtils.writeToParcel(description, dest, 1501 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1502 if (taskDescription != null) { 1503 dest.writeInt(1); 1504 taskDescription.writeToParcel(dest, 0); 1505 } else { 1506 dest.writeInt(0); 1507 } 1508 dest.writeInt(stackId); 1509 dest.writeInt(userId); 1510 dest.writeLong(lastActiveTime); 1511 dest.writeInt(affiliatedTaskId); 1512 dest.writeInt(affiliatedTaskColor); 1513 ComponentName.writeToParcel(baseActivity, dest); 1514 ComponentName.writeToParcel(topActivity, dest); 1515 dest.writeInt(numActivities); 1516 if (bounds != null) { 1517 dest.writeInt(1); 1518 bounds.writeToParcel(dest, 0); 1519 } else { 1520 dest.writeInt(0); 1521 } 1522 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1523 dest.writeInt(resizeMode); 1524 configuration.writeToParcel(dest, flags); 1525 } 1526 1527 public void readFromParcel(Parcel source) { 1528 id = source.readInt(); 1529 persistentId = source.readInt(); 1530 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1531 origActivity = ComponentName.readFromParcel(source); 1532 realActivity = ComponentName.readFromParcel(source); 1533 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1534 taskDescription = source.readInt() > 0 ? 1535 TaskDescription.CREATOR.createFromParcel(source) : null; 1536 stackId = source.readInt(); 1537 userId = source.readInt(); 1538 lastActiveTime = source.readLong(); 1539 affiliatedTaskId = source.readInt(); 1540 affiliatedTaskColor = source.readInt(); 1541 baseActivity = ComponentName.readFromParcel(source); 1542 topActivity = ComponentName.readFromParcel(source); 1543 numActivities = source.readInt(); 1544 bounds = source.readInt() > 0 ? 1545 Rect.CREATOR.createFromParcel(source) : null; 1546 supportsSplitScreenMultiWindow = source.readInt() == 1; 1547 resizeMode = source.readInt(); 1548 configuration.readFromParcel(source); 1549 } 1550 1551 public static final Creator<RecentTaskInfo> CREATOR 1552 = new Creator<RecentTaskInfo>() { 1553 public RecentTaskInfo createFromParcel(Parcel source) { 1554 return new RecentTaskInfo(source); 1555 } 1556 public RecentTaskInfo[] newArray(int size) { 1557 return new RecentTaskInfo[size]; 1558 } 1559 }; 1560 1561 private RecentTaskInfo(Parcel source) { 1562 readFromParcel(source); 1563 } 1564 } 1565 1566 /** 1567 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1568 * that have set their 1569 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1570 */ 1571 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1572 1573 /** 1574 * Provides a list that does not contain any 1575 * recent tasks that currently are not available to the user. 1576 */ 1577 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1578 1579 /** 1580 * <p></p>Return a list of the tasks that the user has recently launched, with 1581 * the most recent being first and older ones after in order. 1582 * 1583 * <p><b>Note: this method is only intended for debugging and presenting 1584 * task management user interfaces</b>. This should never be used for 1585 * core logic in an application, such as deciding between different 1586 * behaviors based on the information found here. Such uses are 1587 * <em>not</em> supported, and will likely break in the future. For 1588 * example, if multiple applications can be actively running at the 1589 * same time, assumptions made about the meaning of the data here for 1590 * purposes of control flow will be incorrect.</p> 1591 * 1592 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1593 * no longer available to third party applications: the introduction of 1594 * document-centric recents means 1595 * it can leak personal information to the caller. For backwards compatibility, 1596 * it will still return a small subset of its data: at least the caller's 1597 * own tasks (though see {@link #getAppTasks()} for the correct supported 1598 * way to retrieve that information), and possibly some other tasks 1599 * such as home that are known to not be sensitive. 1600 * 1601 * @param maxNum The maximum number of entries to return in the list. The 1602 * actual number returned may be smaller, depending on how many tasks the 1603 * user has started and the maximum number the system can remember. 1604 * @param flags Information about what to return. May be any combination 1605 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1606 * 1607 * @return Returns a list of RecentTaskInfo records describing each of 1608 * the recent tasks. 1609 */ 1610 @Deprecated 1611 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1612 throws SecurityException { 1613 try { 1614 if (maxNum < 0) { 1615 throw new IllegalArgumentException("The requested number of tasks should be >= 0"); 1616 } 1617 return getService().getRecentTasks(maxNum, flags, UserHandle.myUserId()).getList(); 1618 } catch (RemoteException e) { 1619 throw e.rethrowFromSystemServer(); 1620 } 1621 } 1622 1623 /** 1624 * Information you can retrieve about a particular task that is currently 1625 * "running" in the system. Note that a running task does not mean the 1626 * given task actually has a process it is actively running in; it simply 1627 * means that the user has gone to it and never closed it, but currently 1628 * the system may have killed its process and is only holding on to its 1629 * last state in order to restart it when the user returns. 1630 */ 1631 public static class RunningTaskInfo implements Parcelable { 1632 /** 1633 * A unique identifier for this task. 1634 */ 1635 public int id; 1636 1637 /** 1638 * The stack that currently contains this task. 1639 * @hide 1640 */ 1641 public int stackId; 1642 1643 /** 1644 * The component launched as the first activity in the task. This can 1645 * be considered the "application" of this task. 1646 */ 1647 public ComponentName baseActivity; 1648 1649 /** 1650 * The activity component at the top of the history stack of the task. 1651 * This is what the user is currently doing. 1652 */ 1653 public ComponentName topActivity; 1654 1655 /** 1656 * Thumbnail representation of the task's current state. Currently 1657 * always null. 1658 */ 1659 public Bitmap thumbnail; 1660 1661 /** 1662 * Description of the task's current state. 1663 */ 1664 public CharSequence description; 1665 1666 /** 1667 * Number of activities in this task. 1668 */ 1669 public int numActivities; 1670 1671 /** 1672 * Number of activities that are currently running (not stopped 1673 * and persisted) in this task. 1674 */ 1675 public int numRunning; 1676 1677 /** 1678 * Last time task was run. For sorting. 1679 * @hide 1680 */ 1681 public long lastActiveTime; 1682 1683 /** 1684 * True if the task can go in the docked stack. 1685 * @hide 1686 */ 1687 public boolean supportsSplitScreenMultiWindow; 1688 1689 /** 1690 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1691 * @hide 1692 */ 1693 public int resizeMode; 1694 1695 /** 1696 * The full configuration the task is currently running in. 1697 * @hide 1698 */ 1699 final public Configuration configuration = new Configuration(); 1700 1701 public RunningTaskInfo() { 1702 } 1703 1704 public int describeContents() { 1705 return 0; 1706 } 1707 1708 public void writeToParcel(Parcel dest, int flags) { 1709 dest.writeInt(id); 1710 dest.writeInt(stackId); 1711 ComponentName.writeToParcel(baseActivity, dest); 1712 ComponentName.writeToParcel(topActivity, dest); 1713 if (thumbnail != null) { 1714 dest.writeInt(1); 1715 thumbnail.writeToParcel(dest, 0); 1716 } else { 1717 dest.writeInt(0); 1718 } 1719 TextUtils.writeToParcel(description, dest, 1720 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1721 dest.writeInt(numActivities); 1722 dest.writeInt(numRunning); 1723 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1724 dest.writeInt(resizeMode); 1725 configuration.writeToParcel(dest, flags); 1726 } 1727 1728 public void readFromParcel(Parcel source) { 1729 id = source.readInt(); 1730 stackId = source.readInt(); 1731 baseActivity = ComponentName.readFromParcel(source); 1732 topActivity = ComponentName.readFromParcel(source); 1733 if (source.readInt() != 0) { 1734 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1735 } else { 1736 thumbnail = null; 1737 } 1738 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1739 numActivities = source.readInt(); 1740 numRunning = source.readInt(); 1741 supportsSplitScreenMultiWindow = source.readInt() != 0; 1742 resizeMode = source.readInt(); 1743 configuration.readFromParcel(source); 1744 } 1745 1746 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1747 public RunningTaskInfo createFromParcel(Parcel source) { 1748 return new RunningTaskInfo(source); 1749 } 1750 public RunningTaskInfo[] newArray(int size) { 1751 return new RunningTaskInfo[size]; 1752 } 1753 }; 1754 1755 private RunningTaskInfo(Parcel source) { 1756 readFromParcel(source); 1757 } 1758 } 1759 1760 /** 1761 * Get the list of tasks associated with the calling application. 1762 * 1763 * @return The list of tasks associated with the application making this call. 1764 * @throws SecurityException 1765 */ 1766 public List<ActivityManager.AppTask> getAppTasks() { 1767 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1768 List<IBinder> appTasks; 1769 try { 1770 appTasks = getService().getAppTasks(mContext.getPackageName()); 1771 } catch (RemoteException e) { 1772 throw e.rethrowFromSystemServer(); 1773 } 1774 int numAppTasks = appTasks.size(); 1775 for (int i = 0; i < numAppTasks; i++) { 1776 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1777 } 1778 return tasks; 1779 } 1780 1781 /** 1782 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1783 * with {@link #addAppTask}. 1784 */ 1785 public Size getAppTaskThumbnailSize() { 1786 synchronized (this) { 1787 ensureAppTaskThumbnailSizeLocked(); 1788 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1789 } 1790 } 1791 1792 private void ensureAppTaskThumbnailSizeLocked() { 1793 if (mAppTaskThumbnailSize == null) { 1794 try { 1795 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1796 } catch (RemoteException e) { 1797 throw e.rethrowFromSystemServer(); 1798 } 1799 } 1800 } 1801 1802 /** 1803 * Add a new {@link AppTask} for the calling application. This will create a new 1804 * recents entry that is added to the <b>end</b> of all existing recents. 1805 * 1806 * @param activity The activity that is adding the entry. This is used to help determine 1807 * the context that the new recents entry will be in. 1808 * @param intent The Intent that describes the recents entry. This is the same Intent that 1809 * you would have used to launch the activity for it. In generally you will want to set 1810 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1811 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1812 * entry will exist without an activity, so it doesn't make sense to not retain it when 1813 * its activity disappears. The given Intent here also must have an explicit ComponentName 1814 * set on it. 1815 * @param description Optional additional description information. 1816 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1817 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1818 * recreated in your process, probably in a way you don't like, before the recents entry 1819 * is added. 1820 * 1821 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1822 * most likely cause of failure is that there is no more room for more tasks for your app. 1823 */ 1824 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1825 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1826 Point size; 1827 synchronized (this) { 1828 ensureAppTaskThumbnailSizeLocked(); 1829 size = mAppTaskThumbnailSize; 1830 } 1831 final int tw = thumbnail.getWidth(); 1832 final int th = thumbnail.getHeight(); 1833 if (tw != size.x || th != size.y) { 1834 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1835 1836 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1837 float scale; 1838 float dx = 0, dy = 0; 1839 if (tw * size.x > size.y * th) { 1840 scale = (float) size.x / (float) th; 1841 dx = (size.y - tw * scale) * 0.5f; 1842 } else { 1843 scale = (float) size.y / (float) tw; 1844 dy = (size.x - th * scale) * 0.5f; 1845 } 1846 Matrix matrix = new Matrix(); 1847 matrix.setScale(scale, scale); 1848 matrix.postTranslate((int) (dx + 0.5f), 0); 1849 1850 Canvas canvas = new Canvas(bm); 1851 canvas.drawBitmap(thumbnail, matrix, null); 1852 canvas.setBitmap(null); 1853 1854 thumbnail = bm; 1855 } 1856 if (description == null) { 1857 description = new TaskDescription(); 1858 } 1859 try { 1860 return getService().addAppTask(activity.getActivityToken(), 1861 intent, description, thumbnail); 1862 } catch (RemoteException e) { 1863 throw e.rethrowFromSystemServer(); 1864 } 1865 } 1866 1867 /** 1868 * Return a list of the tasks that are currently running, with 1869 * the most recent being first and older ones after in order. Note that 1870 * "running" does not mean any of the task's code is currently loaded or 1871 * activity -- the task may have been frozen by the system, so that it 1872 * can be restarted in its previous state when next brought to the 1873 * foreground. 1874 * 1875 * <p><b>Note: this method is only intended for debugging and presenting 1876 * task management user interfaces</b>. This should never be used for 1877 * core logic in an application, such as deciding between different 1878 * behaviors based on the information found here. Such uses are 1879 * <em>not</em> supported, and will likely break in the future. For 1880 * example, if multiple applications can be actively running at the 1881 * same time, assumptions made about the meaning of the data here for 1882 * purposes of control flow will be incorrect.</p> 1883 * 1884 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1885 * is no longer available to third party 1886 * applications: the introduction of document-centric recents means 1887 * it can leak person information to the caller. For backwards compatibility, 1888 * it will still return a small subset of its data: at least the caller's 1889 * own tasks, and possibly some other tasks 1890 * such as home that are known to not be sensitive. 1891 * 1892 * @param maxNum The maximum number of entries to return in the list. The 1893 * actual number returned may be smaller, depending on how many tasks the 1894 * user has started. 1895 * 1896 * @return Returns a list of RunningTaskInfo records describing each of 1897 * the running tasks. 1898 */ 1899 @Deprecated 1900 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1901 throws SecurityException { 1902 try { 1903 return getService().getTasks(maxNum); 1904 } catch (RemoteException e) { 1905 throw e.rethrowFromSystemServer(); 1906 } 1907 } 1908 1909 /** 1910 * Sets the windowing mode for a specific task. Only works on tasks of type 1911 * {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} 1912 * @param taskId The id of the task to set the windowing mode for. 1913 * @param windowingMode The windowing mode to set for the task. 1914 * @param toTop If the task should be moved to the top once the windowing mode changes. 1915 * @hide 1916 */ 1917 @TestApi 1918 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1919 public void setTaskWindowingMode(int taskId, int windowingMode, boolean toTop) 1920 throws SecurityException { 1921 try { 1922 getService().setTaskWindowingMode(taskId, windowingMode, toTop); 1923 } catch (RemoteException e) { 1924 throw e.rethrowFromSystemServer(); 1925 } 1926 } 1927 1928 /** 1929 * Resizes the input stack id to the given bounds. 1930 * @param stackId Id of the stack to resize. 1931 * @param bounds Bounds to resize the stack to or {@code null} for fullscreen. 1932 * @hide 1933 */ 1934 @TestApi 1935 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1936 public void resizeStack(int stackId, Rect bounds) throws SecurityException { 1937 try { 1938 getService().resizeStack(stackId, bounds, false /* allowResizeInDockedMode */, 1939 false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); 1940 } catch (RemoteException e) { 1941 throw e.rethrowFromSystemServer(); 1942 } 1943 } 1944 1945 /** 1946 * Removes stacks in the windowing modes from the system if they are of activity type 1947 * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED 1948 * 1949 * @hide 1950 */ 1951 @TestApi 1952 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1953 public void removeStacksInWindowingModes(int[] windowingModes) throws SecurityException { 1954 try { 1955 getService().removeStacksInWindowingModes(windowingModes); 1956 } catch (RemoteException e) { 1957 throw e.rethrowFromSystemServer(); 1958 } 1959 } 1960 1961 /** 1962 * Removes stack of the activity types from the system. 1963 * 1964 * @hide 1965 */ 1966 @TestApi 1967 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1968 public void removeStacksWithActivityTypes(int[] activityTypes) throws SecurityException { 1969 try { 1970 getService().removeStacksWithActivityTypes(activityTypes); 1971 } catch (RemoteException e) { 1972 throw e.rethrowFromSystemServer(); 1973 } 1974 } 1975 1976 /** 1977 * Represents a task snapshot. 1978 * @hide 1979 */ 1980 public static class TaskSnapshot implements Parcelable { 1981 1982 private final GraphicBuffer mSnapshot; 1983 private final int mOrientation; 1984 private final Rect mContentInsets; 1985 private final boolean mReducedResolution; 1986 private final float mScale; 1987 1988 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 1989 boolean reducedResolution, float scale) { 1990 mSnapshot = snapshot; 1991 mOrientation = orientation; 1992 mContentInsets = new Rect(contentInsets); 1993 mReducedResolution = reducedResolution; 1994 mScale = scale; 1995 } 1996 1997 private TaskSnapshot(Parcel source) { 1998 mSnapshot = source.readParcelable(null /* classLoader */); 1999 mOrientation = source.readInt(); 2000 mContentInsets = source.readParcelable(null /* classLoader */); 2001 mReducedResolution = source.readBoolean(); 2002 mScale = source.readFloat(); 2003 } 2004 2005 /** 2006 * @return The graphic buffer representing the screenshot. 2007 */ 2008 public GraphicBuffer getSnapshot() { 2009 return mSnapshot; 2010 } 2011 2012 /** 2013 * @return The screen orientation the screenshot was taken in. 2014 */ 2015 public int getOrientation() { 2016 return mOrientation; 2017 } 2018 2019 /** 2020 * @return The system/content insets on the snapshot. These can be clipped off in order to 2021 * remove any areas behind system bars in the snapshot. 2022 */ 2023 public Rect getContentInsets() { 2024 return mContentInsets; 2025 } 2026 2027 /** 2028 * @return Whether this snapshot is a down-sampled version of the full resolution. 2029 */ 2030 public boolean isReducedResolution() { 2031 return mReducedResolution; 2032 } 2033 2034 /** 2035 * @return The scale this snapshot was taken in. 2036 */ 2037 public float getScale() { 2038 return mScale; 2039 } 2040 2041 @Override 2042 public int describeContents() { 2043 return 0; 2044 } 2045 2046 @Override 2047 public void writeToParcel(Parcel dest, int flags) { 2048 dest.writeParcelable(mSnapshot, 0); 2049 dest.writeInt(mOrientation); 2050 dest.writeParcelable(mContentInsets, 0); 2051 dest.writeBoolean(mReducedResolution); 2052 dest.writeFloat(mScale); 2053 } 2054 2055 @Override 2056 public String toString() { 2057 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2058 + " mContentInsets=" + mContentInsets.toShortString() 2059 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2060 } 2061 2062 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2063 public TaskSnapshot createFromParcel(Parcel source) { 2064 return new TaskSnapshot(source); 2065 } 2066 public TaskSnapshot[] newArray(int size) { 2067 return new TaskSnapshot[size]; 2068 } 2069 }; 2070 } 2071 2072 /** @hide */ 2073 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2074 MOVE_TASK_WITH_HOME, 2075 MOVE_TASK_NO_USER_ACTION, 2076 }) 2077 @Retention(RetentionPolicy.SOURCE) 2078 public @interface MoveTaskFlags {} 2079 2080 /** 2081 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2082 * activity along with the task, so it is positioned immediately behind 2083 * the task. 2084 */ 2085 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2086 2087 /** 2088 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2089 * user-instigated action, so the current activity will not receive a 2090 * hint that the user is leaving. 2091 */ 2092 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2093 2094 /** 2095 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2096 * with a null options argument. 2097 * 2098 * @param taskId The identifier of the task to be moved, as found in 2099 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2100 * @param flags Additional operational flags. 2101 */ 2102 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2103 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2104 moveTaskToFront(taskId, flags, null); 2105 } 2106 2107 /** 2108 * Ask that the task associated with a given task ID be moved to the 2109 * front of the stack, so it is now visible to the user. 2110 * 2111 * @param taskId The identifier of the task to be moved, as found in 2112 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2113 * @param flags Additional operational flags. 2114 * @param options Additional options for the operation, either null or 2115 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2116 * Context.startActivity(Intent, Bundle)}. 2117 */ 2118 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2119 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2120 try { 2121 getService().moveTaskToFront(taskId, flags, options); 2122 } catch (RemoteException e) { 2123 throw e.rethrowFromSystemServer(); 2124 } 2125 } 2126 2127 /** 2128 * Information you can retrieve about a particular Service that is 2129 * currently running in the system. 2130 */ 2131 public static class RunningServiceInfo implements Parcelable { 2132 /** 2133 * The service component. 2134 */ 2135 public ComponentName service; 2136 2137 /** 2138 * If non-zero, this is the process the service is running in. 2139 */ 2140 public int pid; 2141 2142 /** 2143 * The UID that owns this service. 2144 */ 2145 public int uid; 2146 2147 /** 2148 * The name of the process this service runs in. 2149 */ 2150 public String process; 2151 2152 /** 2153 * Set to true if the service has asked to run as a foreground process. 2154 */ 2155 public boolean foreground; 2156 2157 /** 2158 * The time when the service was first made active, either by someone 2159 * starting or binding to it. This 2160 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2161 */ 2162 public long activeSince; 2163 2164 /** 2165 * Set to true if this service has been explicitly started. 2166 */ 2167 public boolean started; 2168 2169 /** 2170 * Number of clients connected to the service. 2171 */ 2172 public int clientCount; 2173 2174 /** 2175 * Number of times the service's process has crashed while the service 2176 * is running. 2177 */ 2178 public int crashCount; 2179 2180 /** 2181 * The time when there was last activity in the service (either 2182 * explicit requests to start it or clients binding to it). This 2183 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2184 */ 2185 public long lastActivityTime; 2186 2187 /** 2188 * If non-zero, this service is not currently running, but scheduled to 2189 * restart at the given time. 2190 */ 2191 public long restarting; 2192 2193 /** 2194 * Bit for {@link #flags}: set if this service has been 2195 * explicitly started. 2196 */ 2197 public static final int FLAG_STARTED = 1<<0; 2198 2199 /** 2200 * Bit for {@link #flags}: set if the service has asked to 2201 * run as a foreground process. 2202 */ 2203 public static final int FLAG_FOREGROUND = 1<<1; 2204 2205 /** 2206 * Bit for {@link #flags}: set if the service is running in a 2207 * core system process. 2208 */ 2209 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2210 2211 /** 2212 * Bit for {@link #flags}: set if the service is running in a 2213 * persistent process. 2214 */ 2215 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2216 2217 /** 2218 * Running flags. 2219 */ 2220 public int flags; 2221 2222 /** 2223 * For special services that are bound to by system code, this is 2224 * the package that holds the binding. 2225 */ 2226 public String clientPackage; 2227 2228 /** 2229 * For special services that are bound to by system code, this is 2230 * a string resource providing a user-visible label for who the 2231 * client is. 2232 */ 2233 public int clientLabel; 2234 2235 public RunningServiceInfo() { 2236 } 2237 2238 public int describeContents() { 2239 return 0; 2240 } 2241 2242 public void writeToParcel(Parcel dest, int flags) { 2243 ComponentName.writeToParcel(service, dest); 2244 dest.writeInt(pid); 2245 dest.writeInt(uid); 2246 dest.writeString(process); 2247 dest.writeInt(foreground ? 1 : 0); 2248 dest.writeLong(activeSince); 2249 dest.writeInt(started ? 1 : 0); 2250 dest.writeInt(clientCount); 2251 dest.writeInt(crashCount); 2252 dest.writeLong(lastActivityTime); 2253 dest.writeLong(restarting); 2254 dest.writeInt(this.flags); 2255 dest.writeString(clientPackage); 2256 dest.writeInt(clientLabel); 2257 } 2258 2259 public void readFromParcel(Parcel source) { 2260 service = ComponentName.readFromParcel(source); 2261 pid = source.readInt(); 2262 uid = source.readInt(); 2263 process = source.readString(); 2264 foreground = source.readInt() != 0; 2265 activeSince = source.readLong(); 2266 started = source.readInt() != 0; 2267 clientCount = source.readInt(); 2268 crashCount = source.readInt(); 2269 lastActivityTime = source.readLong(); 2270 restarting = source.readLong(); 2271 flags = source.readInt(); 2272 clientPackage = source.readString(); 2273 clientLabel = source.readInt(); 2274 } 2275 2276 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2277 public RunningServiceInfo createFromParcel(Parcel source) { 2278 return new RunningServiceInfo(source); 2279 } 2280 public RunningServiceInfo[] newArray(int size) { 2281 return new RunningServiceInfo[size]; 2282 } 2283 }; 2284 2285 private RunningServiceInfo(Parcel source) { 2286 readFromParcel(source); 2287 } 2288 } 2289 2290 /** 2291 * Return a list of the services that are currently running. 2292 * 2293 * <p><b>Note: this method is only intended for debugging or implementing 2294 * service management type user interfaces.</b></p> 2295 * 2296 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2297 * is no longer available to third party applications. For backwards compatibility, 2298 * it will still return the caller's own services. 2299 * 2300 * @param maxNum The maximum number of entries to return in the list. The 2301 * actual number returned may be smaller, depending on how many services 2302 * are running. 2303 * 2304 * @return Returns a list of RunningServiceInfo records describing each of 2305 * the running tasks. 2306 */ 2307 @Deprecated 2308 public List<RunningServiceInfo> getRunningServices(int maxNum) 2309 throws SecurityException { 2310 try { 2311 return getService() 2312 .getServices(maxNum, 0); 2313 } catch (RemoteException e) { 2314 throw e.rethrowFromSystemServer(); 2315 } 2316 } 2317 2318 /** 2319 * Returns a PendingIntent you can start to show a control panel for the 2320 * given running service. If the service does not have a control panel, 2321 * null is returned. 2322 */ 2323 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2324 throws SecurityException { 2325 try { 2326 return getService() 2327 .getRunningServiceControlPanel(service); 2328 } catch (RemoteException e) { 2329 throw e.rethrowFromSystemServer(); 2330 } 2331 } 2332 2333 /** 2334 * Information you can retrieve about the available memory through 2335 * {@link ActivityManager#getMemoryInfo}. 2336 */ 2337 public static class MemoryInfo implements Parcelable { 2338 /** 2339 * The available memory on the system. This number should not 2340 * be considered absolute: due to the nature of the kernel, a significant 2341 * portion of this memory is actually in use and needed for the overall 2342 * system to run well. 2343 */ 2344 public long availMem; 2345 2346 /** 2347 * The total memory accessible by the kernel. This is basically the 2348 * RAM size of the device, not including below-kernel fixed allocations 2349 * like DMA buffers, RAM for the baseband CPU, etc. 2350 */ 2351 public long totalMem; 2352 2353 /** 2354 * The threshold of {@link #availMem} at which we consider memory to be 2355 * low and start killing background services and other non-extraneous 2356 * processes. 2357 */ 2358 public long threshold; 2359 2360 /** 2361 * Set to true if the system considers itself to currently be in a low 2362 * memory situation. 2363 */ 2364 public boolean lowMemory; 2365 2366 /** @hide */ 2367 public long hiddenAppThreshold; 2368 /** @hide */ 2369 public long secondaryServerThreshold; 2370 /** @hide */ 2371 public long visibleAppThreshold; 2372 /** @hide */ 2373 public long foregroundAppThreshold; 2374 2375 public MemoryInfo() { 2376 } 2377 2378 public int describeContents() { 2379 return 0; 2380 } 2381 2382 public void writeToParcel(Parcel dest, int flags) { 2383 dest.writeLong(availMem); 2384 dest.writeLong(totalMem); 2385 dest.writeLong(threshold); 2386 dest.writeInt(lowMemory ? 1 : 0); 2387 dest.writeLong(hiddenAppThreshold); 2388 dest.writeLong(secondaryServerThreshold); 2389 dest.writeLong(visibleAppThreshold); 2390 dest.writeLong(foregroundAppThreshold); 2391 } 2392 2393 public void readFromParcel(Parcel source) { 2394 availMem = source.readLong(); 2395 totalMem = source.readLong(); 2396 threshold = source.readLong(); 2397 lowMemory = source.readInt() != 0; 2398 hiddenAppThreshold = source.readLong(); 2399 secondaryServerThreshold = source.readLong(); 2400 visibleAppThreshold = source.readLong(); 2401 foregroundAppThreshold = source.readLong(); 2402 } 2403 2404 public static final Creator<MemoryInfo> CREATOR 2405 = new Creator<MemoryInfo>() { 2406 public MemoryInfo createFromParcel(Parcel source) { 2407 return new MemoryInfo(source); 2408 } 2409 public MemoryInfo[] newArray(int size) { 2410 return new MemoryInfo[size]; 2411 } 2412 }; 2413 2414 private MemoryInfo(Parcel source) { 2415 readFromParcel(source); 2416 } 2417 } 2418 2419 /** 2420 * Return general information about the memory state of the system. This 2421 * can be used to help decide how to manage your own memory, though note 2422 * that polling is not recommended and 2423 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2424 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2425 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2426 * level of your process as needed, which gives a better hint for how to 2427 * manage its memory. 2428 */ 2429 public void getMemoryInfo(MemoryInfo outInfo) { 2430 try { 2431 getService().getMemoryInfo(outInfo); 2432 } catch (RemoteException e) { 2433 throw e.rethrowFromSystemServer(); 2434 } 2435 } 2436 2437 /** 2438 * Information you can retrieve about an ActivityStack in the system. 2439 * @hide 2440 */ 2441 public static class StackInfo implements Parcelable { 2442 public int stackId; 2443 public Rect bounds = new Rect(); 2444 public int[] taskIds; 2445 public String[] taskNames; 2446 public Rect[] taskBounds; 2447 public int[] taskUserIds; 2448 public ComponentName topActivity; 2449 public int displayId; 2450 public int userId; 2451 public boolean visible; 2452 // Index of the stack in the display's stack list, can be used for comparison of stack order 2453 public int position; 2454 /** 2455 * The full configuration the stack is currently running in. 2456 * @hide 2457 */ 2458 final public Configuration configuration = new Configuration(); 2459 2460 @Override 2461 public int describeContents() { 2462 return 0; 2463 } 2464 2465 @Override 2466 public void writeToParcel(Parcel dest, int flags) { 2467 dest.writeInt(stackId); 2468 dest.writeInt(bounds.left); 2469 dest.writeInt(bounds.top); 2470 dest.writeInt(bounds.right); 2471 dest.writeInt(bounds.bottom); 2472 dest.writeIntArray(taskIds); 2473 dest.writeStringArray(taskNames); 2474 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2475 dest.writeInt(boundsCount); 2476 for (int i = 0; i < boundsCount; i++) { 2477 dest.writeInt(taskBounds[i].left); 2478 dest.writeInt(taskBounds[i].top); 2479 dest.writeInt(taskBounds[i].right); 2480 dest.writeInt(taskBounds[i].bottom); 2481 } 2482 dest.writeIntArray(taskUserIds); 2483 dest.writeInt(displayId); 2484 dest.writeInt(userId); 2485 dest.writeInt(visible ? 1 : 0); 2486 dest.writeInt(position); 2487 if (topActivity != null) { 2488 dest.writeInt(1); 2489 topActivity.writeToParcel(dest, 0); 2490 } else { 2491 dest.writeInt(0); 2492 } 2493 configuration.writeToParcel(dest, flags); 2494 } 2495 2496 public void readFromParcel(Parcel source) { 2497 stackId = source.readInt(); 2498 bounds = new Rect( 2499 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2500 taskIds = source.createIntArray(); 2501 taskNames = source.createStringArray(); 2502 final int boundsCount = source.readInt(); 2503 if (boundsCount > 0) { 2504 taskBounds = new Rect[boundsCount]; 2505 for (int i = 0; i < boundsCount; i++) { 2506 taskBounds[i] = new Rect(); 2507 taskBounds[i].set( 2508 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2509 } 2510 } else { 2511 taskBounds = null; 2512 } 2513 taskUserIds = source.createIntArray(); 2514 displayId = source.readInt(); 2515 userId = source.readInt(); 2516 visible = source.readInt() > 0; 2517 position = source.readInt(); 2518 if (source.readInt() > 0) { 2519 topActivity = ComponentName.readFromParcel(source); 2520 } 2521 configuration.readFromParcel(source); 2522 } 2523 2524 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2525 @Override 2526 public StackInfo createFromParcel(Parcel source) { 2527 return new StackInfo(source); 2528 } 2529 @Override 2530 public StackInfo[] newArray(int size) { 2531 return new StackInfo[size]; 2532 } 2533 }; 2534 2535 public StackInfo() { 2536 } 2537 2538 private StackInfo(Parcel source) { 2539 readFromParcel(source); 2540 } 2541 2542 public String toString(String prefix) { 2543 StringBuilder sb = new StringBuilder(256); 2544 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2545 sb.append(" bounds="); sb.append(bounds.toShortString()); 2546 sb.append(" displayId="); sb.append(displayId); 2547 sb.append(" userId="); sb.append(userId); 2548 sb.append("\n"); 2549 sb.append(" configuration="); sb.append(configuration); 2550 sb.append("\n"); 2551 prefix = prefix + " "; 2552 for (int i = 0; i < taskIds.length; ++i) { 2553 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2554 sb.append(": "); sb.append(taskNames[i]); 2555 if (taskBounds != null) { 2556 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2557 } 2558 sb.append(" userId=").append(taskUserIds[i]); 2559 sb.append(" visible=").append(visible); 2560 if (topActivity != null) { 2561 sb.append(" topActivity=").append(topActivity); 2562 } 2563 sb.append("\n"); 2564 } 2565 return sb.toString(); 2566 } 2567 2568 @Override 2569 public String toString() { 2570 return toString(""); 2571 } 2572 } 2573 2574 /** 2575 * @hide 2576 */ 2577 @RequiresPermission(anyOf={Manifest.permission.CLEAR_APP_USER_DATA, 2578 Manifest.permission.ACCESS_INSTANT_APPS}) 2579 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2580 try { 2581 return getService().clearApplicationUserData(packageName, 2582 observer, UserHandle.myUserId()); 2583 } catch (RemoteException e) { 2584 throw e.rethrowFromSystemServer(); 2585 } 2586 } 2587 2588 /** 2589 * Permits an application to erase its own data from disk. This is equivalent to 2590 * the user choosing to clear the app's data from within the device settings UI. It 2591 * erases all dynamic data associated with the app -- its private data and data in its 2592 * private area on external storage -- but does not remove the installed application 2593 * itself, nor any OBB files. It also revokes all runtime permissions that the app has acquired, 2594 * clears all notifications and removes all Uri grants related to this application. 2595 * 2596 * @return {@code true} if the application successfully requested that the application's 2597 * data be erased; {@code false} otherwise. 2598 */ 2599 public boolean clearApplicationUserData() { 2600 return clearApplicationUserData(mContext.getPackageName(), null); 2601 } 2602 2603 2604 /** 2605 * Permits an application to get the persistent URI permissions granted to another. 2606 * 2607 * <p>Typically called by Settings. 2608 * 2609 * @param packageName application to look for the granted permissions 2610 * @return list of granted URI permissions 2611 * 2612 * @hide 2613 */ 2614 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2615 try { 2616 return getService().getGrantedUriPermissions(packageName, 2617 UserHandle.myUserId()); 2618 } catch (RemoteException e) { 2619 throw e.rethrowFromSystemServer(); 2620 } 2621 } 2622 2623 /** 2624 * Permits an application to clear the persistent URI permissions granted to another. 2625 * 2626 * <p>Typically called by Settings. 2627 * 2628 * @param packageName application to clear its granted permissions 2629 * 2630 * @hide 2631 */ 2632 public void clearGrantedUriPermissions(String packageName) { 2633 try { 2634 getService().clearGrantedUriPermissions(packageName, 2635 UserHandle.myUserId()); 2636 } catch (RemoteException e) { 2637 throw e.rethrowFromSystemServer(); 2638 } 2639 } 2640 2641 /** 2642 * Information you can retrieve about any processes that are in an error condition. 2643 */ 2644 public static class ProcessErrorStateInfo implements Parcelable { 2645 /** 2646 * Condition codes 2647 */ 2648 public static final int NO_ERROR = 0; 2649 public static final int CRASHED = 1; 2650 public static final int NOT_RESPONDING = 2; 2651 2652 /** 2653 * The condition that the process is in. 2654 */ 2655 public int condition; 2656 2657 /** 2658 * The process name in which the crash or error occurred. 2659 */ 2660 public String processName; 2661 2662 /** 2663 * The pid of this process; 0 if none 2664 */ 2665 public int pid; 2666 2667 /** 2668 * The kernel user-ID that has been assigned to this process; 2669 * currently this is not a unique ID (multiple applications can have 2670 * the same uid). 2671 */ 2672 public int uid; 2673 2674 /** 2675 * The activity name associated with the error, if known. May be null. 2676 */ 2677 public String tag; 2678 2679 /** 2680 * A short message describing the error condition. 2681 */ 2682 public String shortMsg; 2683 2684 /** 2685 * A long message describing the error condition. 2686 */ 2687 public String longMsg; 2688 2689 /** 2690 * The stack trace where the error originated. May be null. 2691 */ 2692 public String stackTrace; 2693 2694 /** 2695 * to be deprecated: This value will always be null. 2696 */ 2697 public byte[] crashData = null; 2698 2699 public ProcessErrorStateInfo() { 2700 } 2701 2702 @Override 2703 public int describeContents() { 2704 return 0; 2705 } 2706 2707 @Override 2708 public void writeToParcel(Parcel dest, int flags) { 2709 dest.writeInt(condition); 2710 dest.writeString(processName); 2711 dest.writeInt(pid); 2712 dest.writeInt(uid); 2713 dest.writeString(tag); 2714 dest.writeString(shortMsg); 2715 dest.writeString(longMsg); 2716 dest.writeString(stackTrace); 2717 } 2718 2719 public void readFromParcel(Parcel source) { 2720 condition = source.readInt(); 2721 processName = source.readString(); 2722 pid = source.readInt(); 2723 uid = source.readInt(); 2724 tag = source.readString(); 2725 shortMsg = source.readString(); 2726 longMsg = source.readString(); 2727 stackTrace = source.readString(); 2728 } 2729 2730 public static final Creator<ProcessErrorStateInfo> CREATOR = 2731 new Creator<ProcessErrorStateInfo>() { 2732 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2733 return new ProcessErrorStateInfo(source); 2734 } 2735 public ProcessErrorStateInfo[] newArray(int size) { 2736 return new ProcessErrorStateInfo[size]; 2737 } 2738 }; 2739 2740 private ProcessErrorStateInfo(Parcel source) { 2741 readFromParcel(source); 2742 } 2743 } 2744 2745 /** 2746 * Returns a list of any processes that are currently in an error condition. The result 2747 * will be null if all processes are running properly at this time. 2748 * 2749 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2750 * current error conditions (it will not return an empty list). This list ordering is not 2751 * specified. 2752 */ 2753 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2754 try { 2755 return getService().getProcessesInErrorState(); 2756 } catch (RemoteException e) { 2757 throw e.rethrowFromSystemServer(); 2758 } 2759 } 2760 2761 /** 2762 * Information you can retrieve about a running process. 2763 */ 2764 public static class RunningAppProcessInfo implements Parcelable { 2765 /** 2766 * The name of the process that this object is associated with 2767 */ 2768 public String processName; 2769 2770 /** 2771 * The pid of this process; 0 if none 2772 */ 2773 public int pid; 2774 2775 /** 2776 * The user id of this process. 2777 */ 2778 public int uid; 2779 2780 /** 2781 * All packages that have been loaded into the process. 2782 */ 2783 public String pkgList[]; 2784 2785 /** 2786 * Constant for {@link #flags}: this is an app that is unable to 2787 * correctly save its state when going to the background, 2788 * so it can not be killed while in the background. 2789 * @hide 2790 */ 2791 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2792 2793 /** 2794 * Constant for {@link #flags}: this process is associated with a 2795 * persistent system app. 2796 * @hide 2797 */ 2798 public static final int FLAG_PERSISTENT = 1<<1; 2799 2800 /** 2801 * Constant for {@link #flags}: this process is associated with a 2802 * persistent system app. 2803 * @hide 2804 */ 2805 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2806 2807 /** 2808 * Flags of information. May be any of 2809 * {@link #FLAG_CANT_SAVE_STATE}. 2810 * @hide 2811 */ 2812 public int flags; 2813 2814 /** 2815 * Last memory trim level reported to the process: corresponds to 2816 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2817 * ComponentCallbacks2.onTrimMemory(int)}. 2818 */ 2819 public int lastTrimLevel; 2820 2821 /** @hide */ 2822 @IntDef(prefix = { "IMPORTANCE_" }, value = { 2823 IMPORTANCE_FOREGROUND, 2824 IMPORTANCE_FOREGROUND_SERVICE, 2825 IMPORTANCE_TOP_SLEEPING, 2826 IMPORTANCE_VISIBLE, 2827 IMPORTANCE_PERCEPTIBLE, 2828 IMPORTANCE_CANT_SAVE_STATE, 2829 IMPORTANCE_SERVICE, 2830 IMPORTANCE_CACHED, 2831 IMPORTANCE_GONE, 2832 }) 2833 @Retention(RetentionPolicy.SOURCE) 2834 public @interface Importance {} 2835 2836 /** 2837 * Constant for {@link #importance}: This process is running the 2838 * foreground UI; that is, it is the thing currently at the top of the screen 2839 * that the user is interacting with. 2840 */ 2841 public static final int IMPORTANCE_FOREGROUND = 100; 2842 2843 /** 2844 * Constant for {@link #importance}: This process is running a foreground 2845 * service, for example to perform music playback even while the user is 2846 * not immediately in the app. This generally indicates that the process 2847 * is doing something the user actively cares about. 2848 */ 2849 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2850 2851 /** 2852 * Constant for {@link #importance}: This process is running the foreground 2853 * UI, but the device is asleep so it is not visible to the user. This means 2854 * the user is not really aware of the process, because they can not see or 2855 * interact with it, but it is quite important because it what they expect to 2856 * return to once unlocking the device. 2857 */ 2858 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2859 2860 /** 2861 * Constant for {@link #importance}: This process is running something 2862 * that is actively visible to the user, though not in the immediate 2863 * foreground. This may be running a window that is behind the current 2864 * foreground (so paused and with its state saved, not interacting with 2865 * the user, but visible to them to some degree); it may also be running 2866 * other services under the system's control that it inconsiders important. 2867 */ 2868 public static final int IMPORTANCE_VISIBLE = 200; 2869 2870 /** 2871 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 2872 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2873 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 2874 * 2875 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 2876 * on Android versions below {@link Build.VERSION_CODES#O}. 2877 * 2878 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 2879 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2880 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2881 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 2882 */ 2883 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 2884 2885 /** 2886 * Constant for {@link #importance}: This process is not something the user 2887 * is directly aware of, but is otherwise perceptible to them to some degree. 2888 */ 2889 public static final int IMPORTANCE_PERCEPTIBLE = 230; 2890 2891 /** 2892 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 2893 * this wrong value 2894 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2895 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 2896 * 2897 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 2898 * on Android versions below {@link Build.VERSION_CODES#O}. 2899 * 2900 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 2901 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2902 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2903 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 2904 * 2905 * @hide 2906 */ 2907 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 2908 2909 /** 2910 * Constant for {@link #importance}: This process is running an 2911 * application that can not save its state, and thus can't be killed 2912 * while in the background. 2913 * @hide 2914 */ 2915 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 2916 2917 /** 2918 * Constant for {@link #importance}: This process is contains services 2919 * that should remain running. These are background services apps have 2920 * started, not something the user is aware of, so they may be killed by 2921 * the system relatively freely (though it is generally desired that they 2922 * stay running as long as they want to). 2923 */ 2924 public static final int IMPORTANCE_SERVICE = 300; 2925 2926 /** 2927 * Constant for {@link #importance}: This process process contains 2928 * cached code that is expendable, not actively running any app components 2929 * we care about. 2930 */ 2931 public static final int IMPORTANCE_CACHED = 400; 2932 2933 /** 2934 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 2935 */ 2936 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 2937 2938 /** 2939 * Constant for {@link #importance}: This process is empty of any 2940 * actively running code. 2941 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 2942 */ 2943 @Deprecated 2944 public static final int IMPORTANCE_EMPTY = 500; 2945 2946 /** 2947 * Constant for {@link #importance}: This process does not exist. 2948 */ 2949 public static final int IMPORTANCE_GONE = 1000; 2950 2951 /** 2952 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 2953 * will be passed to a client, use {@link #procStateToImportanceForClient}. 2954 * @hide 2955 */ 2956 public static @Importance int procStateToImportance(int procState) { 2957 if (procState == PROCESS_STATE_NONEXISTENT) { 2958 return IMPORTANCE_GONE; 2959 } else if (procState >= PROCESS_STATE_HOME) { 2960 return IMPORTANCE_CACHED; 2961 } else if (procState >= PROCESS_STATE_SERVICE) { 2962 return IMPORTANCE_SERVICE; 2963 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2964 return IMPORTANCE_CANT_SAVE_STATE; 2965 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 2966 return IMPORTANCE_PERCEPTIBLE; 2967 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2968 return IMPORTANCE_VISIBLE; 2969 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2970 return IMPORTANCE_TOP_SLEEPING; 2971 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2972 return IMPORTANCE_FOREGROUND_SERVICE; 2973 } else { 2974 return IMPORTANCE_FOREGROUND; 2975 } 2976 } 2977 2978 /** 2979 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 2980 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 2981 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 2982 * client's target SDK < {@link VERSION_CODES#O}. 2983 * @hide 2984 */ 2985 public static @Importance int procStateToImportanceForClient(int procState, 2986 Context clientContext) { 2987 return procStateToImportanceForTargetSdk(procState, 2988 clientContext.getApplicationInfo().targetSdkVersion); 2989 } 2990 2991 /** 2992 * See {@link #procStateToImportanceForClient}. 2993 * @hide 2994 */ 2995 public static @Importance int procStateToImportanceForTargetSdk(int procState, 2996 int targetSdkVersion) { 2997 final int importance = procStateToImportance(procState); 2998 2999 // For pre O apps, convert to the old, wrong values. 3000 if (targetSdkVersion < VERSION_CODES.O) { 3001 switch (importance) { 3002 case IMPORTANCE_PERCEPTIBLE: 3003 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3004 case IMPORTANCE_CANT_SAVE_STATE: 3005 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3006 } 3007 } 3008 return importance; 3009 } 3010 3011 /** @hide */ 3012 public static int importanceToProcState(@Importance int importance) { 3013 if (importance == IMPORTANCE_GONE) { 3014 return PROCESS_STATE_NONEXISTENT; 3015 } else if (importance >= IMPORTANCE_CACHED) { 3016 return PROCESS_STATE_HOME; 3017 } else if (importance >= IMPORTANCE_SERVICE) { 3018 return PROCESS_STATE_SERVICE; 3019 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3020 return PROCESS_STATE_HEAVY_WEIGHT; 3021 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3022 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3023 } else if (importance >= IMPORTANCE_VISIBLE) { 3024 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3025 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3026 return PROCESS_STATE_TOP_SLEEPING; 3027 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3028 return PROCESS_STATE_FOREGROUND_SERVICE; 3029 } else { 3030 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3031 } 3032 } 3033 3034 /** 3035 * The relative importance level that the system places on this process. 3036 * These constants are numbered so that "more important" values are 3037 * always smaller than "less important" values. 3038 */ 3039 public @Importance int importance; 3040 3041 /** 3042 * An additional ordering within a particular {@link #importance} 3043 * category, providing finer-grained information about the relative 3044 * utility of processes within a category. This number means nothing 3045 * except that a smaller values are more recently used (and thus 3046 * more important). Currently an LRU value is only maintained for 3047 * the {@link #IMPORTANCE_CACHED} category, though others may 3048 * be maintained in the future. 3049 */ 3050 public int lru; 3051 3052 /** 3053 * Constant for {@link #importanceReasonCode}: nothing special has 3054 * been specified for the reason for this level. 3055 */ 3056 public static final int REASON_UNKNOWN = 0; 3057 3058 /** 3059 * Constant for {@link #importanceReasonCode}: one of the application's 3060 * content providers is being used by another process. The pid of 3061 * the client process is in {@link #importanceReasonPid} and the 3062 * target provider in this process is in 3063 * {@link #importanceReasonComponent}. 3064 */ 3065 public static final int REASON_PROVIDER_IN_USE = 1; 3066 3067 /** 3068 * Constant for {@link #importanceReasonCode}: one of the application's 3069 * content providers is being used by another process. The pid of 3070 * the client process is in {@link #importanceReasonPid} and the 3071 * target provider in this process is in 3072 * {@link #importanceReasonComponent}. 3073 */ 3074 public static final int REASON_SERVICE_IN_USE = 2; 3075 3076 /** 3077 * The reason for {@link #importance}, if any. 3078 */ 3079 public int importanceReasonCode; 3080 3081 /** 3082 * For the specified values of {@link #importanceReasonCode}, this 3083 * is the process ID of the other process that is a client of this 3084 * process. This will be 0 if no other process is using this one. 3085 */ 3086 public int importanceReasonPid; 3087 3088 /** 3089 * For the specified values of {@link #importanceReasonCode}, this 3090 * is the name of the component that is being used in this process. 3091 */ 3092 public ComponentName importanceReasonComponent; 3093 3094 /** 3095 * When {@link #importanceReasonPid} is non-0, this is the importance 3096 * of the other pid. @hide 3097 */ 3098 public int importanceReasonImportance; 3099 3100 /** 3101 * Current process state, as per PROCESS_STATE_* constants. 3102 * @hide 3103 */ 3104 public int processState; 3105 3106 public RunningAppProcessInfo() { 3107 importance = IMPORTANCE_FOREGROUND; 3108 importanceReasonCode = REASON_UNKNOWN; 3109 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3110 } 3111 3112 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3113 processName = pProcessName; 3114 pid = pPid; 3115 pkgList = pArr; 3116 } 3117 3118 public int describeContents() { 3119 return 0; 3120 } 3121 3122 public void writeToParcel(Parcel dest, int flags) { 3123 dest.writeString(processName); 3124 dest.writeInt(pid); 3125 dest.writeInt(uid); 3126 dest.writeStringArray(pkgList); 3127 dest.writeInt(this.flags); 3128 dest.writeInt(lastTrimLevel); 3129 dest.writeInt(importance); 3130 dest.writeInt(lru); 3131 dest.writeInt(importanceReasonCode); 3132 dest.writeInt(importanceReasonPid); 3133 ComponentName.writeToParcel(importanceReasonComponent, dest); 3134 dest.writeInt(importanceReasonImportance); 3135 dest.writeInt(processState); 3136 } 3137 3138 public void readFromParcel(Parcel source) { 3139 processName = source.readString(); 3140 pid = source.readInt(); 3141 uid = source.readInt(); 3142 pkgList = source.readStringArray(); 3143 flags = source.readInt(); 3144 lastTrimLevel = source.readInt(); 3145 importance = source.readInt(); 3146 lru = source.readInt(); 3147 importanceReasonCode = source.readInt(); 3148 importanceReasonPid = source.readInt(); 3149 importanceReasonComponent = ComponentName.readFromParcel(source); 3150 importanceReasonImportance = source.readInt(); 3151 processState = source.readInt(); 3152 } 3153 3154 public static final Creator<RunningAppProcessInfo> CREATOR = 3155 new Creator<RunningAppProcessInfo>() { 3156 public RunningAppProcessInfo createFromParcel(Parcel source) { 3157 return new RunningAppProcessInfo(source); 3158 } 3159 public RunningAppProcessInfo[] newArray(int size) { 3160 return new RunningAppProcessInfo[size]; 3161 } 3162 }; 3163 3164 private RunningAppProcessInfo(Parcel source) { 3165 readFromParcel(source); 3166 } 3167 } 3168 3169 /** 3170 * Returns a list of application processes installed on external media 3171 * that are running on the device. 3172 * 3173 * <p><b>Note: this method is only intended for debugging or building 3174 * a user-facing process management UI.</b></p> 3175 * 3176 * @return Returns a list of ApplicationInfo records, or null if none 3177 * This list ordering is not specified. 3178 * @hide 3179 */ 3180 public List<ApplicationInfo> getRunningExternalApplications() { 3181 try { 3182 return getService().getRunningExternalApplications(); 3183 } catch (RemoteException e) { 3184 throw e.rethrowFromSystemServer(); 3185 } 3186 } 3187 3188 /** 3189 * Sets the memory trim mode for a process and schedules a memory trim operation. 3190 * 3191 * <p><b>Note: this method is only intended for testing framework.</b></p> 3192 * 3193 * @return Returns true if successful. 3194 * @hide 3195 */ 3196 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3197 try { 3198 return getService().setProcessMemoryTrimLevel(process, userId, 3199 level); 3200 } catch (RemoteException e) { 3201 throw e.rethrowFromSystemServer(); 3202 } 3203 } 3204 3205 /** 3206 * Returns a list of application processes that are running on the device. 3207 * 3208 * <p><b>Note: this method is only intended for debugging or building 3209 * a user-facing process management UI.</b></p> 3210 * 3211 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3212 * running processes (it will not return an empty list). This list ordering is not 3213 * specified. 3214 */ 3215 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3216 try { 3217 return getService().getRunningAppProcesses(); 3218 } catch (RemoteException e) { 3219 throw e.rethrowFromSystemServer(); 3220 } 3221 } 3222 3223 /** 3224 * Return the importance of a given package name, based on the processes that are 3225 * currently running. The return value is one of the importance constants defined 3226 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3227 * processes that this package has code running inside of. If there are no processes 3228 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3229 * @hide 3230 */ 3231 @SystemApi @TestApi 3232 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3233 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3234 try { 3235 int procState = getService().getPackageProcessState(packageName, 3236 mContext.getOpPackageName()); 3237 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3238 } catch (RemoteException e) { 3239 throw e.rethrowFromSystemServer(); 3240 } 3241 } 3242 3243 /** 3244 * Return the importance of a given uid, based on the processes that are 3245 * currently running. The return value is one of the importance constants defined 3246 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3247 * processes that this uid has running. If there are no processes 3248 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3249 * @hide 3250 */ 3251 @SystemApi @TestApi 3252 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3253 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3254 try { 3255 int procState = getService().getUidProcessState(uid, 3256 mContext.getOpPackageName()); 3257 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3258 } catch (RemoteException e) { 3259 throw e.rethrowFromSystemServer(); 3260 } 3261 } 3262 3263 /** 3264 * Callback to get reports about changes to the importance of a uid. Use with 3265 * {@link #addOnUidImportanceListener}. 3266 * @hide 3267 */ 3268 @SystemApi @TestApi 3269 public interface OnUidImportanceListener { 3270 /** 3271 * The importance if a given uid has changed. Will be one of the importance 3272 * values in {@link RunningAppProcessInfo}; 3273 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3274 * when the uid is no longer running at all. This callback will happen on a thread 3275 * from a thread pool, not the main UI thread. 3276 * @param uid The uid whose importance has changed. 3277 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3278 */ 3279 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3280 } 3281 3282 /** 3283 * Start monitoring changes to the imoportance of uids running in the system. 3284 * @param listener The listener callback that will receive change reports. 3285 * @param importanceCutpoint The level of importance in which the caller is interested 3286 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3287 * is used here, you will receive a call each time a uids importance transitions between 3288 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3289 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3290 * 3291 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3292 * permission to use this feature.</p> 3293 * 3294 * @throws IllegalArgumentException If the listener is already registered. 3295 * @throws SecurityException If the caller does not hold 3296 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3297 * @hide 3298 */ 3299 @SystemApi @TestApi 3300 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3301 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3302 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3303 synchronized (this) { 3304 if (mImportanceListeners.containsKey(listener)) { 3305 throw new IllegalArgumentException("Listener already registered: " + listener); 3306 } 3307 // TODO: implement the cut point in the system process to avoid IPCs. 3308 UidObserver observer = new UidObserver(listener, mContext); 3309 try { 3310 getService().registerUidObserver(observer, 3311 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3312 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3313 mContext.getOpPackageName()); 3314 } catch (RemoteException e) { 3315 throw e.rethrowFromSystemServer(); 3316 } 3317 mImportanceListeners.put(listener, observer); 3318 } 3319 } 3320 3321 /** 3322 * Remove an importance listener that was previously registered with 3323 * {@link #addOnUidImportanceListener}. 3324 * 3325 * @throws IllegalArgumentException If the listener is not registered. 3326 * @hide 3327 */ 3328 @SystemApi @TestApi 3329 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3330 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3331 synchronized (this) { 3332 UidObserver observer = mImportanceListeners.remove(listener); 3333 if (observer == null) { 3334 throw new IllegalArgumentException("Listener not registered: " + listener); 3335 } 3336 try { 3337 getService().unregisterUidObserver(observer); 3338 } catch (RemoteException e) { 3339 throw e.rethrowFromSystemServer(); 3340 } 3341 } 3342 } 3343 3344 /** 3345 * Return global memory state information for the calling process. This 3346 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3347 * only fields that will be filled in are 3348 * {@link RunningAppProcessInfo#pid}, 3349 * {@link RunningAppProcessInfo#uid}, 3350 * {@link RunningAppProcessInfo#lastTrimLevel}, 3351 * {@link RunningAppProcessInfo#importance}, 3352 * {@link RunningAppProcessInfo#lru}, and 3353 * {@link RunningAppProcessInfo#importanceReasonCode}. 3354 */ 3355 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3356 try { 3357 getService().getMyMemoryState(outState); 3358 } catch (RemoteException e) { 3359 throw e.rethrowFromSystemServer(); 3360 } 3361 } 3362 3363 /** 3364 * Return information about the memory usage of one or more processes. 3365 * 3366 * <p><b>Note: this method is only intended for debugging or building 3367 * a user-facing process management UI.</b></p> 3368 * 3369 * @param pids The pids of the processes whose memory usage is to be 3370 * retrieved. 3371 * @return Returns an array of memory information, one for each 3372 * requested pid. 3373 */ 3374 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3375 try { 3376 return getService().getProcessMemoryInfo(pids); 3377 } catch (RemoteException e) { 3378 throw e.rethrowFromSystemServer(); 3379 } 3380 } 3381 3382 /** 3383 * @deprecated This is now just a wrapper for 3384 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3385 * is no longer available to applications because it allows them to 3386 * break other applications by removing their alarms, stopping their 3387 * services, etc. 3388 */ 3389 @Deprecated 3390 public void restartPackage(String packageName) { 3391 killBackgroundProcesses(packageName); 3392 } 3393 3394 /** 3395 * Have the system immediately kill all background processes associated 3396 * with the given package. This is the same as the kernel killing those 3397 * processes to reclaim memory; the system will take care of restarting 3398 * these processes in the future as needed. 3399 * 3400 * @param packageName The name of the package whose processes are to 3401 * be killed. 3402 */ 3403 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3404 public void killBackgroundProcesses(String packageName) { 3405 try { 3406 getService().killBackgroundProcesses(packageName, 3407 UserHandle.myUserId()); 3408 } catch (RemoteException e) { 3409 throw e.rethrowFromSystemServer(); 3410 } 3411 } 3412 3413 /** 3414 * Kills the specified UID. 3415 * @param uid The UID to kill. 3416 * @param reason The reason for the kill. 3417 * 3418 * @hide 3419 */ 3420 @SystemApi 3421 @RequiresPermission(Manifest.permission.KILL_UID) 3422 public void killUid(int uid, String reason) { 3423 try { 3424 getService().killUid(UserHandle.getAppId(uid), 3425 UserHandle.getUserId(uid), reason); 3426 } catch (RemoteException e) { 3427 throw e.rethrowFromSystemServer(); 3428 } 3429 } 3430 3431 /** 3432 * Have the system perform a force stop of everything associated with 3433 * the given application package. All processes that share its uid 3434 * will be killed, all services it has running stopped, all activities 3435 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3436 * broadcast will be sent, so that any of its registered alarms can 3437 * be stopped, notifications removed, etc. 3438 * 3439 * <p>You must hold the permission 3440 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3441 * call this method. 3442 * 3443 * @param packageName The name of the package to be stopped. 3444 * @param userId The user for which the running package is to be stopped. 3445 * 3446 * @hide This is not available to third party applications due to 3447 * it allowing them to break other applications by stopping their 3448 * services, removing their alarms, etc. 3449 */ 3450 public void forceStopPackageAsUser(String packageName, int userId) { 3451 try { 3452 getService().forceStopPackage(packageName, userId); 3453 } catch (RemoteException e) { 3454 throw e.rethrowFromSystemServer(); 3455 } 3456 } 3457 3458 /** 3459 * @see #forceStopPackageAsUser(String, int) 3460 * @hide 3461 */ 3462 @SystemApi 3463 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3464 public void forceStopPackage(String packageName) { 3465 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3466 } 3467 3468 /** 3469 * Get the device configuration attributes. 3470 */ 3471 public ConfigurationInfo getDeviceConfigurationInfo() { 3472 try { 3473 return getService().getDeviceConfigurationInfo(); 3474 } catch (RemoteException e) { 3475 throw e.rethrowFromSystemServer(); 3476 } 3477 } 3478 3479 /** 3480 * Get the preferred density of icons for the launcher. This is used when 3481 * custom drawables are created (e.g., for shortcuts). 3482 * 3483 * @return density in terms of DPI 3484 */ 3485 public int getLauncherLargeIconDensity() { 3486 final Resources res = mContext.getResources(); 3487 final int density = res.getDisplayMetrics().densityDpi; 3488 final int sw = res.getConfiguration().smallestScreenWidthDp; 3489 3490 if (sw < 600) { 3491 // Smaller than approx 7" tablets, use the regular icon size. 3492 return density; 3493 } 3494 3495 switch (density) { 3496 case DisplayMetrics.DENSITY_LOW: 3497 return DisplayMetrics.DENSITY_MEDIUM; 3498 case DisplayMetrics.DENSITY_MEDIUM: 3499 return DisplayMetrics.DENSITY_HIGH; 3500 case DisplayMetrics.DENSITY_TV: 3501 return DisplayMetrics.DENSITY_XHIGH; 3502 case DisplayMetrics.DENSITY_HIGH: 3503 return DisplayMetrics.DENSITY_XHIGH; 3504 case DisplayMetrics.DENSITY_XHIGH: 3505 return DisplayMetrics.DENSITY_XXHIGH; 3506 case DisplayMetrics.DENSITY_XXHIGH: 3507 return DisplayMetrics.DENSITY_XHIGH * 2; 3508 default: 3509 // The density is some abnormal value. Return some other 3510 // abnormal value that is a reasonable scaling of it. 3511 return (int)((density*1.5f)+.5f); 3512 } 3513 } 3514 3515 /** 3516 * Get the preferred launcher icon size. This is used when custom drawables 3517 * are created (e.g., for shortcuts). 3518 * 3519 * @return dimensions of square icons in terms of pixels 3520 */ 3521 public int getLauncherLargeIconSize() { 3522 return getLauncherLargeIconSizeInner(mContext); 3523 } 3524 3525 static int getLauncherLargeIconSizeInner(Context context) { 3526 final Resources res = context.getResources(); 3527 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3528 final int sw = res.getConfiguration().smallestScreenWidthDp; 3529 3530 if (sw < 600) { 3531 // Smaller than approx 7" tablets, use the regular icon size. 3532 return size; 3533 } 3534 3535 final int density = res.getDisplayMetrics().densityDpi; 3536 3537 switch (density) { 3538 case DisplayMetrics.DENSITY_LOW: 3539 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3540 case DisplayMetrics.DENSITY_MEDIUM: 3541 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3542 case DisplayMetrics.DENSITY_TV: 3543 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3544 case DisplayMetrics.DENSITY_HIGH: 3545 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3546 case DisplayMetrics.DENSITY_XHIGH: 3547 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3548 case DisplayMetrics.DENSITY_XXHIGH: 3549 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3550 default: 3551 // The density is some abnormal value. Return some other 3552 // abnormal value that is a reasonable scaling of it. 3553 return (int)((size*1.5f) + .5f); 3554 } 3555 } 3556 3557 /** 3558 * Returns "true" if the user interface is currently being messed with 3559 * by a monkey. 3560 */ 3561 public static boolean isUserAMonkey() { 3562 try { 3563 return getService().isUserAMonkey(); 3564 } catch (RemoteException e) { 3565 throw e.rethrowFromSystemServer(); 3566 } 3567 } 3568 3569 /** 3570 * Returns "true" if device is running in a test harness. 3571 */ 3572 public static boolean isRunningInTestHarness() { 3573 return SystemProperties.getBoolean("ro.test_harness", false); 3574 } 3575 3576 /** 3577 * Returns the launch count of each installed package. 3578 * 3579 * @hide 3580 */ 3581 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3582 try { 3583 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3584 ServiceManager.getService("usagestats")); 3585 if (usageStatsService == null) { 3586 return new HashMap<String, Integer>(); 3587 } 3588 3589 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3590 ActivityThread.currentPackageName()); 3591 if (allPkgUsageStats == null) { 3592 return new HashMap<String, Integer>(); 3593 } 3594 3595 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3596 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3597 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3598 } 3599 3600 return launchCounts; 3601 } catch (RemoteException e) { 3602 Log.w(TAG, "Could not query launch counts", e); 3603 return new HashMap<String, Integer>(); 3604 } 3605 }*/ 3606 3607 /** @hide */ 3608 public static int checkComponentPermission(String permission, int uid, 3609 int owningUid, boolean exported) { 3610 // Root, system server get to do everything. 3611 final int appId = UserHandle.getAppId(uid); 3612 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3613 return PackageManager.PERMISSION_GRANTED; 3614 } 3615 // Isolated processes don't get any permissions. 3616 if (UserHandle.isIsolated(uid)) { 3617 return PackageManager.PERMISSION_DENIED; 3618 } 3619 // If there is a uid that owns whatever is being accessed, it has 3620 // blanket access to it regardless of the permissions it requires. 3621 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3622 return PackageManager.PERMISSION_GRANTED; 3623 } 3624 // If the target is not exported, then nobody else can get to it. 3625 if (!exported) { 3626 /* 3627 RuntimeException here = new RuntimeException("here"); 3628 here.fillInStackTrace(); 3629 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3630 here); 3631 */ 3632 return PackageManager.PERMISSION_DENIED; 3633 } 3634 if (permission == null) { 3635 return PackageManager.PERMISSION_GRANTED; 3636 } 3637 try { 3638 return AppGlobals.getPackageManager() 3639 .checkUidPermission(permission, uid); 3640 } catch (RemoteException e) { 3641 throw e.rethrowFromSystemServer(); 3642 } 3643 } 3644 3645 /** @hide */ 3646 public static int checkUidPermission(String permission, int uid) { 3647 try { 3648 return AppGlobals.getPackageManager() 3649 .checkUidPermission(permission, uid); 3650 } catch (RemoteException e) { 3651 throw e.rethrowFromSystemServer(); 3652 } 3653 } 3654 3655 /** 3656 * @hide 3657 * Helper for dealing with incoming user arguments to system service calls. 3658 * Takes care of checking permissions and converting USER_CURRENT to the 3659 * actual current user. 3660 * 3661 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3662 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3663 * @param userId The user id argument supplied by the caller -- this is the user 3664 * they want to run as. 3665 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3666 * to get a USER_ALL returned and deal with it correctly. If false, 3667 * an exception will be thrown if USER_ALL is supplied. 3668 * @param requireFull If true, the caller must hold 3669 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3670 * different user than their current process; otherwise they must hold 3671 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3672 * @param name Optional textual name of the incoming call; only for generating error messages. 3673 * @param callerPackage Optional package name of caller; only for error messages. 3674 * 3675 * @return Returns the user ID that the call should run as. Will always be a concrete 3676 * user number, unless <var>allowAll</var> is true in which case it could also be 3677 * USER_ALL. 3678 */ 3679 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3680 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3681 if (UserHandle.getUserId(callingUid) == userId) { 3682 return userId; 3683 } 3684 try { 3685 return getService().handleIncomingUser(callingPid, 3686 callingUid, userId, allowAll, requireFull, name, callerPackage); 3687 } catch (RemoteException e) { 3688 throw e.rethrowFromSystemServer(); 3689 } 3690 } 3691 3692 /** 3693 * Gets the userId of the current foreground user. Requires system permissions. 3694 * @hide 3695 */ 3696 @SystemApi 3697 @RequiresPermission(anyOf = { 3698 "android.permission.INTERACT_ACROSS_USERS", 3699 "android.permission.INTERACT_ACROSS_USERS_FULL" 3700 }) 3701 public static int getCurrentUser() { 3702 UserInfo ui; 3703 try { 3704 ui = getService().getCurrentUser(); 3705 return ui != null ? ui.id : 0; 3706 } catch (RemoteException e) { 3707 throw e.rethrowFromSystemServer(); 3708 } 3709 } 3710 3711 /** 3712 * @param userid the user's id. Zero indicates the default user. 3713 * @hide 3714 */ 3715 public boolean switchUser(int userid) { 3716 try { 3717 return getService().switchUser(userid); 3718 } catch (RemoteException e) { 3719 throw e.rethrowFromSystemServer(); 3720 } 3721 } 3722 3723 /** 3724 * Logs out current current foreground user by switching to the system user and stopping the 3725 * user being switched from. 3726 * @hide 3727 */ 3728 public static void logoutCurrentUser() { 3729 int currentUser = ActivityManager.getCurrentUser(); 3730 if (currentUser != UserHandle.USER_SYSTEM) { 3731 try { 3732 getService().switchUser(UserHandle.USER_SYSTEM); 3733 getService().stopUser(currentUser, /* force= */ false, null); 3734 } catch (RemoteException e) { 3735 e.rethrowFromSystemServer(); 3736 } 3737 } 3738 } 3739 3740 /** {@hide} */ 3741 public static final int FLAG_OR_STOPPED = 1 << 0; 3742 /** {@hide} */ 3743 public static final int FLAG_AND_LOCKED = 1 << 1; 3744 /** {@hide} */ 3745 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3746 /** {@hide} */ 3747 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3748 3749 /** 3750 * Return whether the given user is actively running. This means that 3751 * the user is in the "started" state, not "stopped" -- it is currently 3752 * allowed to run code through scheduled alarms, receiving broadcasts, 3753 * etc. A started user may be either the current foreground user or a 3754 * background user; the result here does not distinguish between the two. 3755 * @param userId the user's id. Zero indicates the default user. 3756 * @hide 3757 */ 3758 public boolean isUserRunning(int userId) { 3759 try { 3760 return getService().isUserRunning(userId, 0); 3761 } catch (RemoteException e) { 3762 throw e.rethrowFromSystemServer(); 3763 } 3764 } 3765 3766 /** {@hide} */ 3767 public boolean isVrModePackageEnabled(ComponentName component) { 3768 try { 3769 return getService().isVrModePackageEnabled(component); 3770 } catch (RemoteException e) { 3771 throw e.rethrowFromSystemServer(); 3772 } 3773 } 3774 3775 /** 3776 * Perform a system dump of various state associated with the given application 3777 * package name. This call blocks while the dump is being performed, so should 3778 * not be done on a UI thread. The data will be written to the given file 3779 * descriptor as text. 3780 * @param fd The file descriptor that the dump should be written to. The file 3781 * descriptor is <em>not</em> closed by this function; the caller continues to 3782 * own it. 3783 * @param packageName The name of the package that is to be dumped. 3784 */ 3785 @RequiresPermission(Manifest.permission.DUMP) 3786 public void dumpPackageState(FileDescriptor fd, String packageName) { 3787 dumpPackageStateStatic(fd, packageName); 3788 } 3789 3790 /** 3791 * @hide 3792 */ 3793 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3794 FileOutputStream fout = new FileOutputStream(fd); 3795 PrintWriter pw = new FastPrintWriter(fout); 3796 dumpService(pw, fd, "package", new String[] { packageName }); 3797 pw.println(); 3798 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3799 "-a", "package", packageName }); 3800 pw.println(); 3801 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3802 pw.println(); 3803 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3804 pw.println(); 3805 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3806 pw.println(); 3807 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3808 pw.flush(); 3809 } 3810 3811 /** 3812 * @hide 3813 */ 3814 public static boolean isSystemReady() { 3815 if (!sSystemReady) { 3816 if (ActivityThread.isSystem()) { 3817 sSystemReady = 3818 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3819 } else { 3820 // Since this is being called from outside system server, system should be 3821 // ready by now. 3822 sSystemReady = true; 3823 } 3824 } 3825 return sSystemReady; 3826 } 3827 3828 /** 3829 * @hide 3830 */ 3831 public static void broadcastStickyIntent(Intent intent, int userId) { 3832 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3833 } 3834 3835 /** 3836 * Convenience for sending a sticky broadcast. For internal use only. 3837 * 3838 * @hide 3839 */ 3840 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3841 try { 3842 getService().broadcastIntent( 3843 null, intent, null, null, Activity.RESULT_OK, null, null, 3844 null /*permission*/, appOp, null, false, true, userId); 3845 } catch (RemoteException ex) { 3846 } 3847 } 3848 3849 /** 3850 * @hide 3851 */ 3852 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3853 String tag) { 3854 try { 3855 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3856 sourceUid, sourcePkg, tag); 3857 } catch (RemoteException ex) { 3858 } 3859 } 3860 3861 /** 3862 * @hide 3863 */ 3864 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3865 try { 3866 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3867 } catch (RemoteException ex) { 3868 } 3869 } 3870 3871 /** 3872 * @hide 3873 */ 3874 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3875 try { 3876 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3877 } catch (RemoteException ex) { 3878 } 3879 } 3880 3881 /** 3882 * @hide 3883 */ 3884 public static IActivityManager getService() { 3885 return IActivityManagerSingleton.get(); 3886 } 3887 3888 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3889 new Singleton<IActivityManager>() { 3890 @Override 3891 protected IActivityManager create() { 3892 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3893 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3894 return am; 3895 } 3896 }; 3897 3898 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3899 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3900 IBinder service = ServiceManager.checkService(name); 3901 if (service == null) { 3902 pw.println(" (Service not found)"); 3903 pw.flush(); 3904 return; 3905 } 3906 pw.flush(); 3907 if (service instanceof Binder) { 3908 // If this is a local object, it doesn't make sense to do an async dump with it, 3909 // just directly dump. 3910 try { 3911 service.dump(fd, args); 3912 } catch (Throwable e) { 3913 pw.println("Failure dumping service:"); 3914 e.printStackTrace(pw); 3915 pw.flush(); 3916 } 3917 } else { 3918 // Otherwise, it is remote, do the dump asynchronously to avoid blocking. 3919 TransferPipe tp = null; 3920 try { 3921 pw.flush(); 3922 tp = new TransferPipe(); 3923 tp.setBufferPrefix(" "); 3924 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3925 tp.go(fd, 10000); 3926 } catch (Throwable e) { 3927 if (tp != null) { 3928 tp.kill(); 3929 } 3930 pw.println("Failure dumping service:"); 3931 e.printStackTrace(pw); 3932 } 3933 } 3934 } 3935 3936 /** 3937 * Request that the system start watching for the calling process to exceed a pss 3938 * size as given here. Once called, the system will look for any occasions where it 3939 * sees the associated process with a larger pss size and, when this happens, automatically 3940 * pull a heap dump from it and allow the user to share the data. Note that this request 3941 * continues running even if the process is killed and restarted. To remove the watch, 3942 * use {@link #clearWatchHeapLimit()}. 3943 * 3944 * <p>This API only work if the calling process has been marked as 3945 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3946 * (userdebug or eng) build.</p> 3947 * 3948 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3949 * handle heap limit reports themselves.</p> 3950 * 3951 * @param pssSize The size in bytes to set the limit at. 3952 */ 3953 public void setWatchHeapLimit(long pssSize) { 3954 try { 3955 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3956 mContext.getPackageName()); 3957 } catch (RemoteException e) { 3958 throw e.rethrowFromSystemServer(); 3959 } 3960 } 3961 3962 /** 3963 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3964 * If your package has an activity handling this action, it will be launched with the 3965 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3966 * match the activty must support this action and a MIME type of "*/*". 3967 */ 3968 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3969 3970 /** 3971 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3972 */ 3973 public void clearWatchHeapLimit() { 3974 try { 3975 getService().setDumpHeapDebugLimit(null, 0, 0, null); 3976 } catch (RemoteException e) { 3977 throw e.rethrowFromSystemServer(); 3978 } 3979 } 3980 3981 /** 3982 * Return whether currently in lock task mode. When in this mode 3983 * no new tasks can be created or switched to. 3984 * 3985 * @see Activity#startLockTask() 3986 * 3987 * @deprecated Use {@link #getLockTaskModeState} instead. 3988 */ 3989 @Deprecated 3990 public boolean isInLockTaskMode() { 3991 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3992 } 3993 3994 /** 3995 * Return the current state of task locking. The three possible outcomes 3996 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3997 * and {@link #LOCK_TASK_MODE_PINNED}. 3998 * 3999 * @see Activity#startLockTask() 4000 */ 4001 public int getLockTaskModeState() { 4002 try { 4003 return getService().getLockTaskModeState(); 4004 } catch (RemoteException e) { 4005 throw e.rethrowFromSystemServer(); 4006 } 4007 } 4008 4009 /** 4010 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4011 * thread can be a VR thread in a process at a time, and that thread may be subject to 4012 * restrictions on the amount of time it can run. 4013 * 4014 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4015 * method will return to normal operation, and calling this method will do nothing while 4016 * persistent VR mode is enabled. 4017 * 4018 * To reset the VR thread for an application, a tid of 0 can be passed. 4019 * 4020 * @see android.os.Process#myTid() 4021 * @param tid tid of the VR thread 4022 */ 4023 public static void setVrThread(int tid) { 4024 try { 4025 getService().setVrThread(tid); 4026 } catch (RemoteException e) { 4027 // pass 4028 } 4029 } 4030 4031 /** 4032 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4033 * beyond a single process. Only one thread can be a 4034 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4035 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4036 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4037 * persistent VR thread loses its new scheduling priority; this method must be called again to 4038 * set the persistent thread. 4039 * 4040 * To reset the persistent VR thread, a tid of 0 can be passed. 4041 * 4042 * @see android.os.Process#myTid() 4043 * @param tid tid of the VR thread 4044 * @hide 4045 */ 4046 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4047 public static void setPersistentVrThread(int tid) { 4048 try { 4049 getService().setPersistentVrThread(tid); 4050 } catch (RemoteException e) { 4051 // pass 4052 } 4053 } 4054 4055 /** 4056 * The AppTask allows you to manage your own application's tasks. 4057 * See {@link android.app.ActivityManager#getAppTasks()} 4058 */ 4059 public static class AppTask { 4060 private IAppTask mAppTaskImpl; 4061 4062 /** @hide */ 4063 public AppTask(IAppTask task) { 4064 mAppTaskImpl = task; 4065 } 4066 4067 /** 4068 * Finishes all activities in this task and removes it from the recent tasks list. 4069 */ 4070 public void finishAndRemoveTask() { 4071 try { 4072 mAppTaskImpl.finishAndRemoveTask(); 4073 } catch (RemoteException e) { 4074 throw e.rethrowFromSystemServer(); 4075 } 4076 } 4077 4078 /** 4079 * Get the RecentTaskInfo associated with this task. 4080 * 4081 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4082 */ 4083 public RecentTaskInfo getTaskInfo() { 4084 try { 4085 return mAppTaskImpl.getTaskInfo(); 4086 } catch (RemoteException e) { 4087 throw e.rethrowFromSystemServer(); 4088 } 4089 } 4090 4091 /** 4092 * Bring this task to the foreground. If it contains activities, they will be 4093 * brought to the foreground with it and their instances re-created if needed. 4094 * If it doesn't contain activities, the root activity of the task will be 4095 * re-launched. 4096 */ 4097 public void moveToFront() { 4098 try { 4099 mAppTaskImpl.moveToFront(); 4100 } catch (RemoteException e) { 4101 throw e.rethrowFromSystemServer(); 4102 } 4103 } 4104 4105 /** 4106 * Start an activity in this task. Brings the task to the foreground. If this task 4107 * is not currently active (that is, its id < 0), then a new activity for the given 4108 * Intent will be launched as the root of the task and the task brought to the 4109 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4110 * an activity to launch in a new task, then a new activity for the given Intent will 4111 * be launched on top of the task and the task brought to the foreground. If this 4112 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4113 * or would otherwise be launched in to a new task, then the activity not launched but 4114 * this task be brought to the foreground and a new intent delivered to the top 4115 * activity if appropriate. 4116 * 4117 * <p>In other words, you generally want to use an Intent here that does not specify 4118 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4119 * and let the system do the right thing.</p> 4120 * 4121 * @param intent The Intent describing the new activity to be launched on the task. 4122 * @param options Optional launch options. 4123 * 4124 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4125 */ 4126 public void startActivity(Context context, Intent intent, Bundle options) { 4127 ActivityThread thread = ActivityThread.currentActivityThread(); 4128 thread.getInstrumentation().execStartActivityFromAppTask(context, 4129 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4130 } 4131 4132 /** 4133 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4134 * Intent of this AppTask. 4135 * 4136 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4137 * be set; otherwise, it will be cleared. 4138 */ 4139 public void setExcludeFromRecents(boolean exclude) { 4140 try { 4141 mAppTaskImpl.setExcludeFromRecents(exclude); 4142 } catch (RemoteException e) { 4143 throw e.rethrowFromSystemServer(); 4144 } 4145 } 4146 } 4147} 4148