ActivityManager.java revision 637c1ba196e0b4bb16766fafd1959b710f20847f
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 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 686 * 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 DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 691 692 /** 693 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 694 * specifies the position of the created docked stack at the bottom half of the screen if 695 * in portrait mode or at the right half of the screen if in landscape mode. 696 * @hide 697 */ 698 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 699 700 /** 701 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 702 * that the resize doesn't need to preserve the window, and can be skipped if bounds 703 * is unchanged. This mode is used by window manager in most cases. 704 * @hide 705 */ 706 public static final int RESIZE_MODE_SYSTEM = 0; 707 708 /** 709 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 710 * that the resize should preserve the window if possible. 711 * @hide 712 */ 713 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 714 715 /** 716 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 717 * that the resize should be performed even if the bounds appears unchanged. 718 * @hide 719 */ 720 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 721 722 /** 723 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 724 * manager during a screen rotation. 725 * @hide 726 */ 727 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 728 729 /** 730 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 731 * resize is due to a drag action. 732 * @hide 733 */ 734 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 735 736 /** 737 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 738 * that the resize should preserve the window if possible, and should not be skipped 739 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 740 * is ending. 741 * @hide 742 */ 743 public static final int RESIZE_MODE_USER_FORCED = 744 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 745 746 /** @hide */ 747 public int getFrontActivityScreenCompatMode() { 748 try { 749 return getService().getFrontActivityScreenCompatMode(); 750 } catch (RemoteException e) { 751 throw e.rethrowFromSystemServer(); 752 } 753 } 754 755 /** @hide */ 756 public void setFrontActivityScreenCompatMode(int mode) { 757 try { 758 getService().setFrontActivityScreenCompatMode(mode); 759 } catch (RemoteException e) { 760 throw e.rethrowFromSystemServer(); 761 } 762 } 763 764 /** @hide */ 765 public int getPackageScreenCompatMode(String packageName) { 766 try { 767 return getService().getPackageScreenCompatMode(packageName); 768 } catch (RemoteException e) { 769 throw e.rethrowFromSystemServer(); 770 } 771 } 772 773 /** @hide */ 774 public void setPackageScreenCompatMode(String packageName, int mode) { 775 try { 776 getService().setPackageScreenCompatMode(packageName, mode); 777 } catch (RemoteException e) { 778 throw e.rethrowFromSystemServer(); 779 } 780 } 781 782 /** @hide */ 783 public boolean getPackageAskScreenCompat(String packageName) { 784 try { 785 return getService().getPackageAskScreenCompat(packageName); 786 } catch (RemoteException e) { 787 throw e.rethrowFromSystemServer(); 788 } 789 } 790 791 /** @hide */ 792 public void setPackageAskScreenCompat(String packageName, boolean ask) { 793 try { 794 getService().setPackageAskScreenCompat(packageName, ask); 795 } catch (RemoteException e) { 796 throw e.rethrowFromSystemServer(); 797 } 798 } 799 800 /** 801 * Return the approximate per-application memory class of the current 802 * device. This gives you an idea of how hard a memory limit you should 803 * impose on your application to let the overall system work best. The 804 * returned value is in megabytes; the baseline Android memory class is 805 * 16 (which happens to be the Java heap limit of those devices); some 806 * device with more memory may return 24 or even higher numbers. 807 */ 808 public int getMemoryClass() { 809 return staticGetMemoryClass(); 810 } 811 812 /** @hide */ 813 static public int staticGetMemoryClass() { 814 // Really brain dead right now -- just take this from the configured 815 // vm heap size, and assume it is in megabytes and thus ends with "m". 816 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 817 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 818 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 819 } 820 return staticGetLargeMemoryClass(); 821 } 822 823 /** 824 * Return the approximate per-application memory class of the current 825 * device when an application is running with a large heap. This is the 826 * space available for memory-intensive applications; most applications 827 * should not need this amount of memory, and should instead stay with the 828 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 829 * This may be the same size as {@link #getMemoryClass()} on memory 830 * constrained devices, or it may be significantly larger on devices with 831 * a large amount of available RAM. 832 * 833 * <p>The is the size of the application's Dalvik heap if it has 834 * specified <code>android:largeHeap="true"</code> in its manifest. 835 */ 836 public int getLargeMemoryClass() { 837 return staticGetLargeMemoryClass(); 838 } 839 840 /** @hide */ 841 static public int staticGetLargeMemoryClass() { 842 // Really brain dead right now -- just take this from the configured 843 // vm heap size, and assume it is in megabytes and thus ends with "m". 844 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 845 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 846 } 847 848 /** 849 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 850 * is ultimately up to the device configuration, but currently it generally means 851 * something with 1GB or less of RAM. This is mostly intended to be used by apps 852 * to determine whether they should turn off certain features that require more RAM. 853 */ 854 public boolean isLowRamDevice() { 855 return isLowRamDeviceStatic(); 856 } 857 858 /** @hide */ 859 public static boolean isLowRamDeviceStatic() { 860 return RoSystemProperties.CONFIG_LOW_RAM || 861 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 862 } 863 864 /** 865 * Returns true if this is a small battery device. Exactly whether a device is considered to be 866 * small battery is ultimately up to the device configuration, but currently it generally means 867 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 868 * to determine whether certain features should be altered to account for a drastically smaller 869 * battery. 870 * @hide 871 */ 872 public static boolean isSmallBatteryDevice() { 873 return RoSystemProperties.CONFIG_SMALL_BATTERY; 874 } 875 876 /** 877 * Used by persistent processes to determine if they are running on a 878 * higher-end device so should be okay using hardware drawing acceleration 879 * (which tends to consume a lot more RAM). 880 * @hide 881 */ 882 static public boolean isHighEndGfx() { 883 return !isLowRamDeviceStatic() && 884 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 885 } 886 887 /** 888 * Return the maximum number of recents entries that we will maintain and show. 889 * @hide 890 */ 891 static public int getMaxRecentTasksStatic() { 892 if (gMaxRecentTasks < 0) { 893 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 894 } 895 return gMaxRecentTasks; 896 } 897 898 /** 899 * Return the default limit on the number of recents that an app can make. 900 * @hide 901 */ 902 static public int getDefaultAppRecentsLimitStatic() { 903 return getMaxRecentTasksStatic() / 6; 904 } 905 906 /** 907 * Return the maximum limit on the number of recents that an app can make. 908 * @hide 909 */ 910 static public int getMaxAppRecentsLimitStatic() { 911 return getMaxRecentTasksStatic() / 2; 912 } 913 914 /** 915 * Returns true if the system supports at least one form of multi-window. 916 * E.g. freeform, split-screen, picture-in-picture. 917 * @hide 918 */ 919 @TestApi 920 static public boolean supportsMultiWindow(Context context) { 921 // On watches, multi-window is used to present essential system UI, and thus it must be 922 // supported regardless of device memory characteristics. 923 boolean isWatch = context.getPackageManager().hasSystemFeature( 924 PackageManager.FEATURE_WATCH); 925 return (!isLowRamDeviceStatic() || isWatch) 926 && Resources.getSystem().getBoolean( 927 com.android.internal.R.bool.config_supportsMultiWindow); 928 } 929 930 /** 931 * Returns true if the system supports split screen multi-window. 932 * @hide 933 */ 934 @TestApi 935 static public boolean supportsSplitScreenMultiWindow(Context context) { 936 return supportsMultiWindow(context) 937 && Resources.getSystem().getBoolean( 938 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 939 } 940 941 /** @removed */ 942 @Deprecated 943 public static int getMaxNumPictureInPictureActions() { 944 return 3; 945 } 946 947 /** 948 * Information you can set and retrieve about the current activity within the recent task list. 949 */ 950 public static class TaskDescription implements Parcelable { 951 /** @hide */ 952 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 953 private static final String ATTR_TASKDESCRIPTIONLABEL = 954 ATTR_TASKDESCRIPTION_PREFIX + "label"; 955 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 956 ATTR_TASKDESCRIPTION_PREFIX + "color"; 957 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 958 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 959 private static final String ATTR_TASKDESCRIPTIONICON_FILENAME = 960 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 961 private static final String ATTR_TASKDESCRIPTIONICON_RESOURCE = 962 ATTR_TASKDESCRIPTION_PREFIX + "icon_resource"; 963 964 private String mLabel; 965 private Bitmap mIcon; 966 private int mIconRes; 967 private String mIconFilename; 968 private int mColorPrimary; 969 private int mColorBackground; 970 private int mStatusBarColor; 971 private int mNavigationBarColor; 972 973 /** 974 * Creates the TaskDescription to the specified values. 975 * 976 * @param label A label and description of the current state of this task. 977 * @param icon An icon that represents the current state of this task. 978 * @param colorPrimary A color to override the theme's primary color. This color must be 979 * opaque. 980 * @deprecated use TaskDescription constructor with icon resource instead 981 */ 982 @Deprecated 983 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 984 this(label, icon, 0, null, colorPrimary, 0, 0, 0); 985 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 986 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 987 } 988 } 989 990 /** 991 * Creates the TaskDescription to the specified values. 992 * 993 * @param label A label and description of the current state of this task. 994 * @param iconRes A drawable resource of an icon that represents the current state of this 995 * activity. 996 * @param colorPrimary A color to override the theme's primary color. This color must be 997 * opaque. 998 */ 999 public TaskDescription(String label, @DrawableRes int iconRes, int colorPrimary) { 1000 this(label, null, iconRes, null, colorPrimary, 0, 0, 0); 1001 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1002 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1003 } 1004 } 1005 1006 /** 1007 * Creates the TaskDescription to the specified values. 1008 * 1009 * @param label A label and description of the current state of this activity. 1010 * @param icon An icon that represents the current state of this activity. 1011 * @deprecated use TaskDescription constructor with icon resource instead 1012 */ 1013 @Deprecated 1014 public TaskDescription(String label, Bitmap icon) { 1015 this(label, icon, 0, null, 0, 0, 0, 0); 1016 } 1017 1018 /** 1019 * Creates the TaskDescription to the specified values. 1020 * 1021 * @param label A label and description of the current state of this activity. 1022 * @param iconRes A drawable resource of an icon that represents the current state of this 1023 * activity. 1024 */ 1025 public TaskDescription(String label, @DrawableRes int iconRes) { 1026 this(label, null, iconRes, null, 0, 0, 0, 0); 1027 } 1028 1029 /** 1030 * Creates the TaskDescription to the specified values. 1031 * 1032 * @param label A label and description of the current state of this activity. 1033 */ 1034 public TaskDescription(String label) { 1035 this(label, null, 0, null, 0, 0, 0, 0); 1036 } 1037 1038 /** 1039 * Creates an empty TaskDescription. 1040 */ 1041 public TaskDescription() { 1042 this(null, null, 0, null, 0, 0, 0, 0); 1043 } 1044 1045 /** @hide */ 1046 public TaskDescription(String label, Bitmap bitmap, int iconRes, String iconFilename, 1047 int colorPrimary, int colorBackground, int statusBarColor, int navigationBarColor) { 1048 mLabel = label; 1049 mIcon = bitmap; 1050 mIconRes = iconRes; 1051 mIconFilename = iconFilename; 1052 mColorPrimary = colorPrimary; 1053 mColorBackground = colorBackground; 1054 mStatusBarColor = statusBarColor; 1055 mNavigationBarColor = navigationBarColor; 1056 } 1057 1058 /** 1059 * Creates a copy of another TaskDescription. 1060 */ 1061 public TaskDescription(TaskDescription td) { 1062 copyFrom(td); 1063 } 1064 1065 /** 1066 * Copies this the values from another TaskDescription. 1067 * @hide 1068 */ 1069 public void copyFrom(TaskDescription other) { 1070 mLabel = other.mLabel; 1071 mIcon = other.mIcon; 1072 mIconRes = other.mIconRes; 1073 mIconFilename = other.mIconFilename; 1074 mColorPrimary = other.mColorPrimary; 1075 mColorBackground = other.mColorBackground; 1076 mStatusBarColor = other.mStatusBarColor; 1077 mNavigationBarColor = other.mNavigationBarColor; 1078 } 1079 1080 /** 1081 * Copies this the values from another TaskDescription, but preserves the hidden fields 1082 * if they weren't set on {@code other} 1083 * @hide 1084 */ 1085 public void copyFromPreserveHiddenFields(TaskDescription other) { 1086 mLabel = other.mLabel; 1087 mIcon = other.mIcon; 1088 mIconRes = other.mIconRes; 1089 mIconFilename = other.mIconFilename; 1090 mColorPrimary = other.mColorPrimary; 1091 if (other.mColorBackground != 0) { 1092 mColorBackground = other.mColorBackground; 1093 } 1094 if (other.mStatusBarColor != 0) { 1095 mStatusBarColor = other.mStatusBarColor; 1096 } 1097 if (other.mNavigationBarColor != 0) { 1098 mNavigationBarColor = other.mNavigationBarColor; 1099 } 1100 } 1101 1102 private TaskDescription(Parcel source) { 1103 readFromParcel(source); 1104 } 1105 1106 /** 1107 * Sets the label for this task description. 1108 * @hide 1109 */ 1110 public void setLabel(String label) { 1111 mLabel = label; 1112 } 1113 1114 /** 1115 * Sets the primary color for this task description. 1116 * @hide 1117 */ 1118 public void setPrimaryColor(int primaryColor) { 1119 // Ensure that the given color is valid 1120 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1121 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1122 } 1123 mColorPrimary = primaryColor; 1124 } 1125 1126 /** 1127 * Sets the background color for this task description. 1128 * @hide 1129 */ 1130 public void setBackgroundColor(int backgroundColor) { 1131 // Ensure that the given color is valid 1132 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1133 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1134 } 1135 mColorBackground = backgroundColor; 1136 } 1137 1138 /** 1139 * @hide 1140 */ 1141 public void setStatusBarColor(int statusBarColor) { 1142 mStatusBarColor = statusBarColor; 1143 } 1144 1145 /** 1146 * @hide 1147 */ 1148 public void setNavigationBarColor(int navigationBarColor) { 1149 mNavigationBarColor = navigationBarColor; 1150 } 1151 1152 /** 1153 * Sets the icon for this task description. 1154 * @hide 1155 */ 1156 public void setIcon(Bitmap icon) { 1157 mIcon = icon; 1158 } 1159 1160 /** 1161 * Sets the icon resource for this task description. 1162 * @hide 1163 */ 1164 public void setIcon(int iconRes) { 1165 mIconRes = iconRes; 1166 } 1167 1168 /** 1169 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1170 * bitmap. 1171 * @hide 1172 */ 1173 public void setIconFilename(String iconFilename) { 1174 mIconFilename = iconFilename; 1175 mIcon = null; 1176 } 1177 1178 /** 1179 * @return The label and description of the current state of this task. 1180 */ 1181 public String getLabel() { 1182 return mLabel; 1183 } 1184 1185 /** 1186 * @return The icon that represents the current state of this task. 1187 */ 1188 public Bitmap getIcon() { 1189 if (mIcon != null) { 1190 return mIcon; 1191 } 1192 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1193 } 1194 1195 /** @hide */ 1196 @TestApi 1197 public int getIconResource() { 1198 return mIconRes; 1199 } 1200 1201 /** @hide */ 1202 @TestApi 1203 public String getIconFilename() { 1204 return mIconFilename; 1205 } 1206 1207 /** @hide */ 1208 public Bitmap getInMemoryIcon() { 1209 return mIcon; 1210 } 1211 1212 /** @hide */ 1213 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1214 if (iconFilename != null) { 1215 try { 1216 return getService().getTaskDescriptionIcon(iconFilename, 1217 userId); 1218 } catch (RemoteException e) { 1219 throw e.rethrowFromSystemServer(); 1220 } 1221 } 1222 return null; 1223 } 1224 1225 /** 1226 * @return The color override on the theme's primary color. 1227 */ 1228 public int getPrimaryColor() { 1229 return mColorPrimary; 1230 } 1231 1232 /** 1233 * @return The background color. 1234 * @hide 1235 */ 1236 public int getBackgroundColor() { 1237 return mColorBackground; 1238 } 1239 1240 /** 1241 * @hide 1242 */ 1243 public int getStatusBarColor() { 1244 return mStatusBarColor; 1245 } 1246 1247 /** 1248 * @hide 1249 */ 1250 public int getNavigationBarColor() { 1251 return mNavigationBarColor; 1252 } 1253 1254 /** @hide */ 1255 public void saveToXml(XmlSerializer out) throws IOException { 1256 if (mLabel != null) { 1257 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1258 } 1259 if (mColorPrimary != 0) { 1260 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1261 Integer.toHexString(mColorPrimary)); 1262 } 1263 if (mColorBackground != 0) { 1264 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1265 Integer.toHexString(mColorBackground)); 1266 } 1267 if (mIconFilename != null) { 1268 out.attribute(null, ATTR_TASKDESCRIPTIONICON_FILENAME, mIconFilename); 1269 } 1270 if (mIconRes != 0) { 1271 out.attribute(null, ATTR_TASKDESCRIPTIONICON_RESOURCE, Integer.toString(mIconRes)); 1272 } 1273 } 1274 1275 /** @hide */ 1276 public void restoreFromXml(String attrName, String attrValue) { 1277 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1278 setLabel(attrValue); 1279 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1280 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1281 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1282 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1283 } else if (ATTR_TASKDESCRIPTIONICON_FILENAME.equals(attrName)) { 1284 setIconFilename(attrValue); 1285 } else if (ATTR_TASKDESCRIPTIONICON_RESOURCE.equals(attrName)) { 1286 setIcon(Integer.parseInt(attrValue, 10)); 1287 } 1288 } 1289 1290 @Override 1291 public int describeContents() { 1292 return 0; 1293 } 1294 1295 @Override 1296 public void writeToParcel(Parcel dest, int flags) { 1297 if (mLabel == null) { 1298 dest.writeInt(0); 1299 } else { 1300 dest.writeInt(1); 1301 dest.writeString(mLabel); 1302 } 1303 if (mIcon == null) { 1304 dest.writeInt(0); 1305 } else { 1306 dest.writeInt(1); 1307 mIcon.writeToParcel(dest, 0); 1308 } 1309 dest.writeInt(mIconRes); 1310 dest.writeInt(mColorPrimary); 1311 dest.writeInt(mColorBackground); 1312 dest.writeInt(mStatusBarColor); 1313 dest.writeInt(mNavigationBarColor); 1314 if (mIconFilename == null) { 1315 dest.writeInt(0); 1316 } else { 1317 dest.writeInt(1); 1318 dest.writeString(mIconFilename); 1319 } 1320 } 1321 1322 public void readFromParcel(Parcel source) { 1323 mLabel = source.readInt() > 0 ? source.readString() : null; 1324 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1325 mIconRes = source.readInt(); 1326 mColorPrimary = source.readInt(); 1327 mColorBackground = source.readInt(); 1328 mStatusBarColor = source.readInt(); 1329 mNavigationBarColor = source.readInt(); 1330 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1331 } 1332 1333 public static final Creator<TaskDescription> CREATOR 1334 = new Creator<TaskDescription>() { 1335 public TaskDescription createFromParcel(Parcel source) { 1336 return new TaskDescription(source); 1337 } 1338 public TaskDescription[] newArray(int size) { 1339 return new TaskDescription[size]; 1340 } 1341 }; 1342 1343 @Override 1344 public String toString() { 1345 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1346 " IconRes: " + mIconRes + " IconFilename: " + mIconFilename + 1347 " colorPrimary: " + mColorPrimary + " colorBackground: " + mColorBackground + 1348 " statusBarColor: " + mColorBackground + 1349 " navigationBarColor: " + mNavigationBarColor; 1350 } 1351 } 1352 1353 /** 1354 * Information you can retrieve about tasks that the user has most recently 1355 * started or visited. 1356 */ 1357 public static class RecentTaskInfo implements Parcelable { 1358 /** 1359 * If this task is currently running, this is the identifier for it. 1360 * If it is not running, this will be -1. 1361 */ 1362 public int id; 1363 1364 /** 1365 * The true identifier of this task, valid even if it is not running. 1366 */ 1367 public int persistentId; 1368 1369 /** 1370 * The original Intent used to launch the task. You can use this 1371 * Intent to re-launch the task (if it is no longer running) or bring 1372 * the current task to the front. 1373 */ 1374 public Intent baseIntent; 1375 1376 /** 1377 * If this task was started from an alias, this is the actual 1378 * activity component that was initially started; the component of 1379 * the baseIntent in this case is the name of the actual activity 1380 * implementation that the alias referred to. Otherwise, this is null. 1381 */ 1382 public ComponentName origActivity; 1383 1384 /** 1385 * The actual activity component that started the task. 1386 * @hide 1387 */ 1388 @Nullable 1389 public ComponentName realActivity; 1390 1391 /** 1392 * Description of the task's last state. 1393 */ 1394 public CharSequence description; 1395 1396 /** 1397 * The id of the ActivityStack this Task was on most recently. 1398 * @hide 1399 */ 1400 public int stackId; 1401 1402 /** 1403 * The id of the user the task was running as. 1404 * @hide 1405 */ 1406 public int userId; 1407 1408 /** 1409 * The first time this task was active. 1410 * @hide 1411 */ 1412 public long firstActiveTime; 1413 1414 /** 1415 * The last time this task was active. 1416 * @hide 1417 */ 1418 public long lastActiveTime; 1419 1420 /** 1421 * The recent activity values for the highest activity in the stack to have set the values. 1422 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1423 */ 1424 public TaskDescription taskDescription; 1425 1426 /** 1427 * Task affiliation for grouping with other tasks. 1428 */ 1429 public int affiliatedTaskId; 1430 1431 /** 1432 * Task affiliation color of the source task with the affiliated task id. 1433 * 1434 * @hide 1435 */ 1436 public int affiliatedTaskColor; 1437 1438 /** 1439 * The component launched as the first activity in the task. 1440 * This can be considered the "application" of this task. 1441 */ 1442 public ComponentName baseActivity; 1443 1444 /** 1445 * The activity component at the top of the history stack of the task. 1446 * This is what the user is currently doing. 1447 */ 1448 public ComponentName topActivity; 1449 1450 /** 1451 * Number of activities in this task. 1452 */ 1453 public int numActivities; 1454 1455 /** 1456 * The bounds of the task. 1457 * @hide 1458 */ 1459 public Rect bounds; 1460 1461 /** 1462 * True if the task can go in the docked stack. 1463 * @hide 1464 */ 1465 public boolean supportsSplitScreenMultiWindow; 1466 1467 /** 1468 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1469 * @hide 1470 */ 1471 public int resizeMode; 1472 1473 /** 1474 * The current configuration this task is in. 1475 * @hide 1476 */ 1477 final public Configuration configuration = new Configuration(); 1478 1479 public RecentTaskInfo() { 1480 } 1481 1482 @Override 1483 public int describeContents() { 1484 return 0; 1485 } 1486 1487 @Override 1488 public void writeToParcel(Parcel dest, int flags) { 1489 dest.writeInt(id); 1490 dest.writeInt(persistentId); 1491 if (baseIntent != null) { 1492 dest.writeInt(1); 1493 baseIntent.writeToParcel(dest, 0); 1494 } else { 1495 dest.writeInt(0); 1496 } 1497 ComponentName.writeToParcel(origActivity, dest); 1498 ComponentName.writeToParcel(realActivity, dest); 1499 TextUtils.writeToParcel(description, dest, 1500 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1501 if (taskDescription != null) { 1502 dest.writeInt(1); 1503 taskDescription.writeToParcel(dest, 0); 1504 } else { 1505 dest.writeInt(0); 1506 } 1507 dest.writeInt(stackId); 1508 dest.writeInt(userId); 1509 dest.writeLong(lastActiveTime); 1510 dest.writeInt(affiliatedTaskId); 1511 dest.writeInt(affiliatedTaskColor); 1512 ComponentName.writeToParcel(baseActivity, dest); 1513 ComponentName.writeToParcel(topActivity, dest); 1514 dest.writeInt(numActivities); 1515 if (bounds != null) { 1516 dest.writeInt(1); 1517 bounds.writeToParcel(dest, 0); 1518 } else { 1519 dest.writeInt(0); 1520 } 1521 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1522 dest.writeInt(resizeMode); 1523 configuration.writeToParcel(dest, flags); 1524 } 1525 1526 public void readFromParcel(Parcel source) { 1527 id = source.readInt(); 1528 persistentId = source.readInt(); 1529 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1530 origActivity = ComponentName.readFromParcel(source); 1531 realActivity = ComponentName.readFromParcel(source); 1532 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1533 taskDescription = source.readInt() > 0 ? 1534 TaskDescription.CREATOR.createFromParcel(source) : null; 1535 stackId = source.readInt(); 1536 userId = source.readInt(); 1537 lastActiveTime = source.readLong(); 1538 affiliatedTaskId = source.readInt(); 1539 affiliatedTaskColor = source.readInt(); 1540 baseActivity = ComponentName.readFromParcel(source); 1541 topActivity = ComponentName.readFromParcel(source); 1542 numActivities = source.readInt(); 1543 bounds = source.readInt() > 0 ? 1544 Rect.CREATOR.createFromParcel(source) : null; 1545 supportsSplitScreenMultiWindow = source.readInt() == 1; 1546 resizeMode = source.readInt(); 1547 configuration.readFromParcel(source); 1548 } 1549 1550 public static final Creator<RecentTaskInfo> CREATOR 1551 = new Creator<RecentTaskInfo>() { 1552 public RecentTaskInfo createFromParcel(Parcel source) { 1553 return new RecentTaskInfo(source); 1554 } 1555 public RecentTaskInfo[] newArray(int size) { 1556 return new RecentTaskInfo[size]; 1557 } 1558 }; 1559 1560 private RecentTaskInfo(Parcel source) { 1561 readFromParcel(source); 1562 } 1563 } 1564 1565 /** 1566 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1567 * that have set their 1568 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1569 */ 1570 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1571 1572 /** 1573 * Provides a list that does not contain any 1574 * recent tasks that currently are not available to the user. 1575 */ 1576 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1577 1578 /** 1579 * <p></p>Return a list of the tasks that the user has recently launched, with 1580 * the most recent being first and older ones after in order. 1581 * 1582 * <p><b>Note: this method is only intended for debugging and presenting 1583 * task management user interfaces</b>. This should never be used for 1584 * core logic in an application, such as deciding between different 1585 * behaviors based on the information found here. Such uses are 1586 * <em>not</em> supported, and will likely break in the future. For 1587 * example, if multiple applications can be actively running at the 1588 * same time, assumptions made about the meaning of the data here for 1589 * purposes of control flow will be incorrect.</p> 1590 * 1591 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1592 * no longer available to third party applications: the introduction of 1593 * document-centric recents means 1594 * it can leak personal information to the caller. For backwards compatibility, 1595 * it will still return a small subset of its data: at least the caller's 1596 * own tasks (though see {@link #getAppTasks()} for the correct supported 1597 * way to retrieve that information), and possibly some other tasks 1598 * such as home that are known to not be sensitive. 1599 * 1600 * @param maxNum The maximum number of entries to return in the list. The 1601 * actual number returned may be smaller, depending on how many tasks the 1602 * user has started and the maximum number the system can remember. 1603 * @param flags Information about what to return. May be any combination 1604 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1605 * 1606 * @return Returns a list of RecentTaskInfo records describing each of 1607 * the recent tasks. 1608 */ 1609 @Deprecated 1610 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1611 throws SecurityException { 1612 try { 1613 if (maxNum < 0) { 1614 throw new IllegalArgumentException("The requested number of tasks should be >= 0"); 1615 } 1616 return getService().getRecentTasks(maxNum, flags, UserHandle.myUserId()).getList(); 1617 } catch (RemoteException e) { 1618 throw e.rethrowFromSystemServer(); 1619 } 1620 } 1621 1622 /** 1623 * Information you can retrieve about a particular task that is currently 1624 * "running" in the system. Note that a running task does not mean the 1625 * given task actually has a process it is actively running in; it simply 1626 * means that the user has gone to it and never closed it, but currently 1627 * the system may have killed its process and is only holding on to its 1628 * last state in order to restart it when the user returns. 1629 */ 1630 public static class RunningTaskInfo implements Parcelable { 1631 /** 1632 * A unique identifier for this task. 1633 */ 1634 public int id; 1635 1636 /** 1637 * The stack that currently contains this task. 1638 * @hide 1639 */ 1640 public int stackId; 1641 1642 /** 1643 * The component launched as the first activity in the task. This can 1644 * be considered the "application" of this task. 1645 */ 1646 public ComponentName baseActivity; 1647 1648 /** 1649 * The activity component at the top of the history stack of the task. 1650 * This is what the user is currently doing. 1651 */ 1652 public ComponentName topActivity; 1653 1654 /** 1655 * Thumbnail representation of the task's current state. Currently 1656 * always null. 1657 */ 1658 public Bitmap thumbnail; 1659 1660 /** 1661 * Description of the task's current state. 1662 */ 1663 public CharSequence description; 1664 1665 /** 1666 * Number of activities in this task. 1667 */ 1668 public int numActivities; 1669 1670 /** 1671 * Number of activities that are currently running (not stopped 1672 * and persisted) in this task. 1673 */ 1674 public int numRunning; 1675 1676 /** 1677 * Last time task was run. For sorting. 1678 * @hide 1679 */ 1680 public long lastActiveTime; 1681 1682 /** 1683 * True if the task can go in the docked stack. 1684 * @hide 1685 */ 1686 public boolean supportsSplitScreenMultiWindow; 1687 1688 /** 1689 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1690 * @hide 1691 */ 1692 public int resizeMode; 1693 1694 /** 1695 * The full configuration the task is currently running in. 1696 * @hide 1697 */ 1698 final public Configuration configuration = new Configuration(); 1699 1700 public RunningTaskInfo() { 1701 } 1702 1703 public int describeContents() { 1704 return 0; 1705 } 1706 1707 public void writeToParcel(Parcel dest, int flags) { 1708 dest.writeInt(id); 1709 dest.writeInt(stackId); 1710 ComponentName.writeToParcel(baseActivity, dest); 1711 ComponentName.writeToParcel(topActivity, dest); 1712 if (thumbnail != null) { 1713 dest.writeInt(1); 1714 thumbnail.writeToParcel(dest, 0); 1715 } else { 1716 dest.writeInt(0); 1717 } 1718 TextUtils.writeToParcel(description, dest, 1719 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1720 dest.writeInt(numActivities); 1721 dest.writeInt(numRunning); 1722 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1723 dest.writeInt(resizeMode); 1724 configuration.writeToParcel(dest, flags); 1725 } 1726 1727 public void readFromParcel(Parcel source) { 1728 id = source.readInt(); 1729 stackId = source.readInt(); 1730 baseActivity = ComponentName.readFromParcel(source); 1731 topActivity = ComponentName.readFromParcel(source); 1732 if (source.readInt() != 0) { 1733 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1734 } else { 1735 thumbnail = null; 1736 } 1737 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1738 numActivities = source.readInt(); 1739 numRunning = source.readInt(); 1740 supportsSplitScreenMultiWindow = source.readInt() != 0; 1741 resizeMode = source.readInt(); 1742 configuration.readFromParcel(source); 1743 } 1744 1745 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1746 public RunningTaskInfo createFromParcel(Parcel source) { 1747 return new RunningTaskInfo(source); 1748 } 1749 public RunningTaskInfo[] newArray(int size) { 1750 return new RunningTaskInfo[size]; 1751 } 1752 }; 1753 1754 private RunningTaskInfo(Parcel source) { 1755 readFromParcel(source); 1756 } 1757 } 1758 1759 /** 1760 * Get the list of tasks associated with the calling application. 1761 * 1762 * @return The list of tasks associated with the application making this call. 1763 * @throws SecurityException 1764 */ 1765 public List<ActivityManager.AppTask> getAppTasks() { 1766 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1767 List<IBinder> appTasks; 1768 try { 1769 appTasks = getService().getAppTasks(mContext.getPackageName()); 1770 } catch (RemoteException e) { 1771 throw e.rethrowFromSystemServer(); 1772 } 1773 int numAppTasks = appTasks.size(); 1774 for (int i = 0; i < numAppTasks; i++) { 1775 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1776 } 1777 return tasks; 1778 } 1779 1780 /** 1781 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1782 * with {@link #addAppTask}. 1783 */ 1784 public Size getAppTaskThumbnailSize() { 1785 synchronized (this) { 1786 ensureAppTaskThumbnailSizeLocked(); 1787 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1788 } 1789 } 1790 1791 private void ensureAppTaskThumbnailSizeLocked() { 1792 if (mAppTaskThumbnailSize == null) { 1793 try { 1794 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1795 } catch (RemoteException e) { 1796 throw e.rethrowFromSystemServer(); 1797 } 1798 } 1799 } 1800 1801 /** 1802 * Add a new {@link AppTask} for the calling application. This will create a new 1803 * recents entry that is added to the <b>end</b> of all existing recents. 1804 * 1805 * @param activity The activity that is adding the entry. This is used to help determine 1806 * the context that the new recents entry will be in. 1807 * @param intent The Intent that describes the recents entry. This is the same Intent that 1808 * you would have used to launch the activity for it. In generally you will want to set 1809 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1810 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1811 * entry will exist without an activity, so it doesn't make sense to not retain it when 1812 * its activity disappears. The given Intent here also must have an explicit ComponentName 1813 * set on it. 1814 * @param description Optional additional description information. 1815 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1816 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1817 * recreated in your process, probably in a way you don't like, before the recents entry 1818 * is added. 1819 * 1820 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1821 * most likely cause of failure is that there is no more room for more tasks for your app. 1822 */ 1823 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1824 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1825 Point size; 1826 synchronized (this) { 1827 ensureAppTaskThumbnailSizeLocked(); 1828 size = mAppTaskThumbnailSize; 1829 } 1830 final int tw = thumbnail.getWidth(); 1831 final int th = thumbnail.getHeight(); 1832 if (tw != size.x || th != size.y) { 1833 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1834 1835 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1836 float scale; 1837 float dx = 0, dy = 0; 1838 if (tw * size.x > size.y * th) { 1839 scale = (float) size.x / (float) th; 1840 dx = (size.y - tw * scale) * 0.5f; 1841 } else { 1842 scale = (float) size.y / (float) tw; 1843 dy = (size.x - th * scale) * 0.5f; 1844 } 1845 Matrix matrix = new Matrix(); 1846 matrix.setScale(scale, scale); 1847 matrix.postTranslate((int) (dx + 0.5f), 0); 1848 1849 Canvas canvas = new Canvas(bm); 1850 canvas.drawBitmap(thumbnail, matrix, null); 1851 canvas.setBitmap(null); 1852 1853 thumbnail = bm; 1854 } 1855 if (description == null) { 1856 description = new TaskDescription(); 1857 } 1858 try { 1859 return getService().addAppTask(activity.getActivityToken(), 1860 intent, description, thumbnail); 1861 } catch (RemoteException e) { 1862 throw e.rethrowFromSystemServer(); 1863 } 1864 } 1865 1866 /** 1867 * Return a list of the tasks that are currently running, with 1868 * the most recent being first and older ones after in order. Note that 1869 * "running" does not mean any of the task's code is currently loaded or 1870 * activity -- the task may have been frozen by the system, so that it 1871 * can be restarted in its previous state when next brought to the 1872 * foreground. 1873 * 1874 * <p><b>Note: this method is only intended for debugging and presenting 1875 * task management user interfaces</b>. This should never be used for 1876 * core logic in an application, such as deciding between different 1877 * behaviors based on the information found here. Such uses are 1878 * <em>not</em> supported, and will likely break in the future. For 1879 * example, if multiple applications can be actively running at the 1880 * same time, assumptions made about the meaning of the data here for 1881 * purposes of control flow will be incorrect.</p> 1882 * 1883 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1884 * is no longer available to third party 1885 * applications: the introduction of document-centric recents means 1886 * it can leak person information to the caller. For backwards compatibility, 1887 * it will still return a small subset of its data: at least the caller's 1888 * own tasks, and possibly some other tasks 1889 * such as home that are known to not be sensitive. 1890 * 1891 * @param maxNum The maximum number of entries to return in the list. The 1892 * actual number returned may be smaller, depending on how many tasks the 1893 * user has started. 1894 * 1895 * @return Returns a list of RunningTaskInfo records describing each of 1896 * the running tasks. 1897 */ 1898 @Deprecated 1899 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1900 throws SecurityException { 1901 try { 1902 return getService().getTasks(maxNum); 1903 } catch (RemoteException e) { 1904 throw e.rethrowFromSystemServer(); 1905 } 1906 } 1907 1908 /** 1909 * Sets the windowing mode for a specific task. Only works on tasks of type 1910 * {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} 1911 * @param taskId The id of the task to set the windowing mode for. 1912 * @param windowingMode The windowing mode to set for the task. 1913 * @param toTop If the task should be moved to the top once the windowing mode changes. 1914 * @hide 1915 */ 1916 @TestApi 1917 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1918 public void setTaskWindowingMode(int taskId, int windowingMode, boolean toTop) 1919 throws SecurityException { 1920 try { 1921 getService().setTaskWindowingMode(taskId, windowingMode, toTop); 1922 } catch (RemoteException e) { 1923 throw e.rethrowFromSystemServer(); 1924 } 1925 } 1926 1927 /** 1928 * Resizes the input stack id to the given bounds. 1929 * @param stackId Id of the stack to resize. 1930 * @param bounds Bounds to resize the stack to or {@code null} for fullscreen. 1931 * @hide 1932 */ 1933 @TestApi 1934 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1935 public void resizeStack(int stackId, Rect bounds) throws SecurityException { 1936 try { 1937 getService().resizeStack(stackId, bounds, false /* allowResizeInDockedMode */, 1938 false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); 1939 } catch (RemoteException e) { 1940 throw e.rethrowFromSystemServer(); 1941 } 1942 } 1943 1944 /** 1945 * Removes stacks in the windowing modes from the system if they are of activity type 1946 * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED 1947 * 1948 * @hide 1949 */ 1950 @TestApi 1951 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1952 public void removeStacksInWindowingModes(int[] windowingModes) throws SecurityException { 1953 try { 1954 getService().removeStacksInWindowingModes(windowingModes); 1955 } catch (RemoteException e) { 1956 throw e.rethrowFromSystemServer(); 1957 } 1958 } 1959 1960 /** 1961 * Removes stack of the activity types from the system. 1962 * 1963 * @hide 1964 */ 1965 @TestApi 1966 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1967 public void removeStacksWithActivityTypes(int[] activityTypes) throws SecurityException { 1968 try { 1969 getService().removeStacksWithActivityTypes(activityTypes); 1970 } catch (RemoteException e) { 1971 throw e.rethrowFromSystemServer(); 1972 } 1973 } 1974 1975 /** 1976 * Represents a task snapshot. 1977 * @hide 1978 */ 1979 public static class TaskSnapshot implements Parcelable { 1980 1981 private final GraphicBuffer mSnapshot; 1982 private final int mOrientation; 1983 private final Rect mContentInsets; 1984 private final boolean mReducedResolution; 1985 private final float mScale; 1986 1987 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 1988 boolean reducedResolution, float scale) { 1989 mSnapshot = snapshot; 1990 mOrientation = orientation; 1991 mContentInsets = new Rect(contentInsets); 1992 mReducedResolution = reducedResolution; 1993 mScale = scale; 1994 } 1995 1996 private TaskSnapshot(Parcel source) { 1997 mSnapshot = source.readParcelable(null /* classLoader */); 1998 mOrientation = source.readInt(); 1999 mContentInsets = source.readParcelable(null /* classLoader */); 2000 mReducedResolution = source.readBoolean(); 2001 mScale = source.readFloat(); 2002 } 2003 2004 /** 2005 * @return The graphic buffer representing the screenshot. 2006 */ 2007 public GraphicBuffer getSnapshot() { 2008 return mSnapshot; 2009 } 2010 2011 /** 2012 * @return The screen orientation the screenshot was taken in. 2013 */ 2014 public int getOrientation() { 2015 return mOrientation; 2016 } 2017 2018 /** 2019 * @return The system/content insets on the snapshot. These can be clipped off in order to 2020 * remove any areas behind system bars in the snapshot. 2021 */ 2022 public Rect getContentInsets() { 2023 return mContentInsets; 2024 } 2025 2026 /** 2027 * @return Whether this snapshot is a down-sampled version of the full resolution. 2028 */ 2029 public boolean isReducedResolution() { 2030 return mReducedResolution; 2031 } 2032 2033 /** 2034 * @return The scale this snapshot was taken in. 2035 */ 2036 public float getScale() { 2037 return mScale; 2038 } 2039 2040 @Override 2041 public int describeContents() { 2042 return 0; 2043 } 2044 2045 @Override 2046 public void writeToParcel(Parcel dest, int flags) { 2047 dest.writeParcelable(mSnapshot, 0); 2048 dest.writeInt(mOrientation); 2049 dest.writeParcelable(mContentInsets, 0); 2050 dest.writeBoolean(mReducedResolution); 2051 dest.writeFloat(mScale); 2052 } 2053 2054 @Override 2055 public String toString() { 2056 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2057 + " mContentInsets=" + mContentInsets.toShortString() 2058 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2059 } 2060 2061 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2062 public TaskSnapshot createFromParcel(Parcel source) { 2063 return new TaskSnapshot(source); 2064 } 2065 public TaskSnapshot[] newArray(int size) { 2066 return new TaskSnapshot[size]; 2067 } 2068 }; 2069 } 2070 2071 /** @hide */ 2072 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2073 MOVE_TASK_WITH_HOME, 2074 MOVE_TASK_NO_USER_ACTION, 2075 }) 2076 @Retention(RetentionPolicy.SOURCE) 2077 public @interface MoveTaskFlags {} 2078 2079 /** 2080 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2081 * activity along with the task, so it is positioned immediately behind 2082 * the task. 2083 */ 2084 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2085 2086 /** 2087 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2088 * user-instigated action, so the current activity will not receive a 2089 * hint that the user is leaving. 2090 */ 2091 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2092 2093 /** 2094 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2095 * with a null options argument. 2096 * 2097 * @param taskId The identifier of the task to be moved, as found in 2098 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2099 * @param flags Additional operational flags. 2100 */ 2101 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2102 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2103 moveTaskToFront(taskId, flags, null); 2104 } 2105 2106 /** 2107 * Ask that the task associated with a given task ID be moved to the 2108 * front of the stack, so it is now visible to the user. 2109 * 2110 * @param taskId The identifier of the task to be moved, as found in 2111 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2112 * @param flags Additional operational flags. 2113 * @param options Additional options for the operation, either null or 2114 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2115 * Context.startActivity(Intent, Bundle)}. 2116 */ 2117 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2118 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2119 try { 2120 getService().moveTaskToFront(taskId, flags, options); 2121 } catch (RemoteException e) { 2122 throw e.rethrowFromSystemServer(); 2123 } 2124 } 2125 2126 /** 2127 * Information you can retrieve about a particular Service that is 2128 * currently running in the system. 2129 */ 2130 public static class RunningServiceInfo implements Parcelable { 2131 /** 2132 * The service component. 2133 */ 2134 public ComponentName service; 2135 2136 /** 2137 * If non-zero, this is the process the service is running in. 2138 */ 2139 public int pid; 2140 2141 /** 2142 * The UID that owns this service. 2143 */ 2144 public int uid; 2145 2146 /** 2147 * The name of the process this service runs in. 2148 */ 2149 public String process; 2150 2151 /** 2152 * Set to true if the service has asked to run as a foreground process. 2153 */ 2154 public boolean foreground; 2155 2156 /** 2157 * The time when the service was first made active, either by someone 2158 * starting or binding to it. This 2159 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2160 */ 2161 public long activeSince; 2162 2163 /** 2164 * Set to true if this service has been explicitly started. 2165 */ 2166 public boolean started; 2167 2168 /** 2169 * Number of clients connected to the service. 2170 */ 2171 public int clientCount; 2172 2173 /** 2174 * Number of times the service's process has crashed while the service 2175 * is running. 2176 */ 2177 public int crashCount; 2178 2179 /** 2180 * The time when there was last activity in the service (either 2181 * explicit requests to start it or clients binding to it). This 2182 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2183 */ 2184 public long lastActivityTime; 2185 2186 /** 2187 * If non-zero, this service is not currently running, but scheduled to 2188 * restart at the given time. 2189 */ 2190 public long restarting; 2191 2192 /** 2193 * Bit for {@link #flags}: set if this service has been 2194 * explicitly started. 2195 */ 2196 public static final int FLAG_STARTED = 1<<0; 2197 2198 /** 2199 * Bit for {@link #flags}: set if the service has asked to 2200 * run as a foreground process. 2201 */ 2202 public static final int FLAG_FOREGROUND = 1<<1; 2203 2204 /** 2205 * Bit for {@link #flags}: set if the service is running in a 2206 * core system process. 2207 */ 2208 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2209 2210 /** 2211 * Bit for {@link #flags}: set if the service is running in a 2212 * persistent process. 2213 */ 2214 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2215 2216 /** 2217 * Running flags. 2218 */ 2219 public int flags; 2220 2221 /** 2222 * For special services that are bound to by system code, this is 2223 * the package that holds the binding. 2224 */ 2225 public String clientPackage; 2226 2227 /** 2228 * For special services that are bound to by system code, this is 2229 * a string resource providing a user-visible label for who the 2230 * client is. 2231 */ 2232 public int clientLabel; 2233 2234 public RunningServiceInfo() { 2235 } 2236 2237 public int describeContents() { 2238 return 0; 2239 } 2240 2241 public void writeToParcel(Parcel dest, int flags) { 2242 ComponentName.writeToParcel(service, dest); 2243 dest.writeInt(pid); 2244 dest.writeInt(uid); 2245 dest.writeString(process); 2246 dest.writeInt(foreground ? 1 : 0); 2247 dest.writeLong(activeSince); 2248 dest.writeInt(started ? 1 : 0); 2249 dest.writeInt(clientCount); 2250 dest.writeInt(crashCount); 2251 dest.writeLong(lastActivityTime); 2252 dest.writeLong(restarting); 2253 dest.writeInt(this.flags); 2254 dest.writeString(clientPackage); 2255 dest.writeInt(clientLabel); 2256 } 2257 2258 public void readFromParcel(Parcel source) { 2259 service = ComponentName.readFromParcel(source); 2260 pid = source.readInt(); 2261 uid = source.readInt(); 2262 process = source.readString(); 2263 foreground = source.readInt() != 0; 2264 activeSince = source.readLong(); 2265 started = source.readInt() != 0; 2266 clientCount = source.readInt(); 2267 crashCount = source.readInt(); 2268 lastActivityTime = source.readLong(); 2269 restarting = source.readLong(); 2270 flags = source.readInt(); 2271 clientPackage = source.readString(); 2272 clientLabel = source.readInt(); 2273 } 2274 2275 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2276 public RunningServiceInfo createFromParcel(Parcel source) { 2277 return new RunningServiceInfo(source); 2278 } 2279 public RunningServiceInfo[] newArray(int size) { 2280 return new RunningServiceInfo[size]; 2281 } 2282 }; 2283 2284 private RunningServiceInfo(Parcel source) { 2285 readFromParcel(source); 2286 } 2287 } 2288 2289 /** 2290 * Return a list of the services that are currently running. 2291 * 2292 * <p><b>Note: this method is only intended for debugging or implementing 2293 * service management type user interfaces.</b></p> 2294 * 2295 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2296 * is no longer available to third party applications. For backwards compatibility, 2297 * it will still return the caller's own services. 2298 * 2299 * @param maxNum The maximum number of entries to return in the list. The 2300 * actual number returned may be smaller, depending on how many services 2301 * are running. 2302 * 2303 * @return Returns a list of RunningServiceInfo records describing each of 2304 * the running tasks. 2305 */ 2306 @Deprecated 2307 public List<RunningServiceInfo> getRunningServices(int maxNum) 2308 throws SecurityException { 2309 try { 2310 return getService() 2311 .getServices(maxNum, 0); 2312 } catch (RemoteException e) { 2313 throw e.rethrowFromSystemServer(); 2314 } 2315 } 2316 2317 /** 2318 * Returns a PendingIntent you can start to show a control panel for the 2319 * given running service. If the service does not have a control panel, 2320 * null is returned. 2321 */ 2322 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2323 throws SecurityException { 2324 try { 2325 return getService() 2326 .getRunningServiceControlPanel(service); 2327 } catch (RemoteException e) { 2328 throw e.rethrowFromSystemServer(); 2329 } 2330 } 2331 2332 /** 2333 * Information you can retrieve about the available memory through 2334 * {@link ActivityManager#getMemoryInfo}. 2335 */ 2336 public static class MemoryInfo implements Parcelable { 2337 /** 2338 * The available memory on the system. This number should not 2339 * be considered absolute: due to the nature of the kernel, a significant 2340 * portion of this memory is actually in use and needed for the overall 2341 * system to run well. 2342 */ 2343 public long availMem; 2344 2345 /** 2346 * The total memory accessible by the kernel. This is basically the 2347 * RAM size of the device, not including below-kernel fixed allocations 2348 * like DMA buffers, RAM for the baseband CPU, etc. 2349 */ 2350 public long totalMem; 2351 2352 /** 2353 * The threshold of {@link #availMem} at which we consider memory to be 2354 * low and start killing background services and other non-extraneous 2355 * processes. 2356 */ 2357 public long threshold; 2358 2359 /** 2360 * Set to true if the system considers itself to currently be in a low 2361 * memory situation. 2362 */ 2363 public boolean lowMemory; 2364 2365 /** @hide */ 2366 public long hiddenAppThreshold; 2367 /** @hide */ 2368 public long secondaryServerThreshold; 2369 /** @hide */ 2370 public long visibleAppThreshold; 2371 /** @hide */ 2372 public long foregroundAppThreshold; 2373 2374 public MemoryInfo() { 2375 } 2376 2377 public int describeContents() { 2378 return 0; 2379 } 2380 2381 public void writeToParcel(Parcel dest, int flags) { 2382 dest.writeLong(availMem); 2383 dest.writeLong(totalMem); 2384 dest.writeLong(threshold); 2385 dest.writeInt(lowMemory ? 1 : 0); 2386 dest.writeLong(hiddenAppThreshold); 2387 dest.writeLong(secondaryServerThreshold); 2388 dest.writeLong(visibleAppThreshold); 2389 dest.writeLong(foregroundAppThreshold); 2390 } 2391 2392 public void readFromParcel(Parcel source) { 2393 availMem = source.readLong(); 2394 totalMem = source.readLong(); 2395 threshold = source.readLong(); 2396 lowMemory = source.readInt() != 0; 2397 hiddenAppThreshold = source.readLong(); 2398 secondaryServerThreshold = source.readLong(); 2399 visibleAppThreshold = source.readLong(); 2400 foregroundAppThreshold = source.readLong(); 2401 } 2402 2403 public static final Creator<MemoryInfo> CREATOR 2404 = new Creator<MemoryInfo>() { 2405 public MemoryInfo createFromParcel(Parcel source) { 2406 return new MemoryInfo(source); 2407 } 2408 public MemoryInfo[] newArray(int size) { 2409 return new MemoryInfo[size]; 2410 } 2411 }; 2412 2413 private MemoryInfo(Parcel source) { 2414 readFromParcel(source); 2415 } 2416 } 2417 2418 /** 2419 * Return general information about the memory state of the system. This 2420 * can be used to help decide how to manage your own memory, though note 2421 * that polling is not recommended and 2422 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2423 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2424 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2425 * level of your process as needed, which gives a better hint for how to 2426 * manage its memory. 2427 */ 2428 public void getMemoryInfo(MemoryInfo outInfo) { 2429 try { 2430 getService().getMemoryInfo(outInfo); 2431 } catch (RemoteException e) { 2432 throw e.rethrowFromSystemServer(); 2433 } 2434 } 2435 2436 /** 2437 * Information you can retrieve about an ActivityStack in the system. 2438 * @hide 2439 */ 2440 public static class StackInfo implements Parcelable { 2441 public int stackId; 2442 public Rect bounds = new Rect(); 2443 public int[] taskIds; 2444 public String[] taskNames; 2445 public Rect[] taskBounds; 2446 public int[] taskUserIds; 2447 public ComponentName topActivity; 2448 public int displayId; 2449 public int userId; 2450 public boolean visible; 2451 // Index of the stack in the display's stack list, can be used for comparison of stack order 2452 public int position; 2453 /** 2454 * The full configuration the stack is currently running in. 2455 * @hide 2456 */ 2457 final public Configuration configuration = new Configuration(); 2458 2459 @Override 2460 public int describeContents() { 2461 return 0; 2462 } 2463 2464 @Override 2465 public void writeToParcel(Parcel dest, int flags) { 2466 dest.writeInt(stackId); 2467 dest.writeInt(bounds.left); 2468 dest.writeInt(bounds.top); 2469 dest.writeInt(bounds.right); 2470 dest.writeInt(bounds.bottom); 2471 dest.writeIntArray(taskIds); 2472 dest.writeStringArray(taskNames); 2473 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2474 dest.writeInt(boundsCount); 2475 for (int i = 0; i < boundsCount; i++) { 2476 dest.writeInt(taskBounds[i].left); 2477 dest.writeInt(taskBounds[i].top); 2478 dest.writeInt(taskBounds[i].right); 2479 dest.writeInt(taskBounds[i].bottom); 2480 } 2481 dest.writeIntArray(taskUserIds); 2482 dest.writeInt(displayId); 2483 dest.writeInt(userId); 2484 dest.writeInt(visible ? 1 : 0); 2485 dest.writeInt(position); 2486 if (topActivity != null) { 2487 dest.writeInt(1); 2488 topActivity.writeToParcel(dest, 0); 2489 } else { 2490 dest.writeInt(0); 2491 } 2492 configuration.writeToParcel(dest, flags); 2493 } 2494 2495 public void readFromParcel(Parcel source) { 2496 stackId = source.readInt(); 2497 bounds = new Rect( 2498 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2499 taskIds = source.createIntArray(); 2500 taskNames = source.createStringArray(); 2501 final int boundsCount = source.readInt(); 2502 if (boundsCount > 0) { 2503 taskBounds = new Rect[boundsCount]; 2504 for (int i = 0; i < boundsCount; i++) { 2505 taskBounds[i] = new Rect(); 2506 taskBounds[i].set( 2507 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2508 } 2509 } else { 2510 taskBounds = null; 2511 } 2512 taskUserIds = source.createIntArray(); 2513 displayId = source.readInt(); 2514 userId = source.readInt(); 2515 visible = source.readInt() > 0; 2516 position = source.readInt(); 2517 if (source.readInt() > 0) { 2518 topActivity = ComponentName.readFromParcel(source); 2519 } 2520 configuration.readFromParcel(source); 2521 } 2522 2523 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2524 @Override 2525 public StackInfo createFromParcel(Parcel source) { 2526 return new StackInfo(source); 2527 } 2528 @Override 2529 public StackInfo[] newArray(int size) { 2530 return new StackInfo[size]; 2531 } 2532 }; 2533 2534 public StackInfo() { 2535 } 2536 2537 private StackInfo(Parcel source) { 2538 readFromParcel(source); 2539 } 2540 2541 public String toString(String prefix) { 2542 StringBuilder sb = new StringBuilder(256); 2543 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2544 sb.append(" bounds="); sb.append(bounds.toShortString()); 2545 sb.append(" displayId="); sb.append(displayId); 2546 sb.append(" userId="); sb.append(userId); 2547 sb.append("\n"); 2548 sb.append(" configuration="); sb.append(configuration); 2549 sb.append("\n"); 2550 prefix = prefix + " "; 2551 for (int i = 0; i < taskIds.length; ++i) { 2552 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2553 sb.append(": "); sb.append(taskNames[i]); 2554 if (taskBounds != null) { 2555 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2556 } 2557 sb.append(" userId=").append(taskUserIds[i]); 2558 sb.append(" visible=").append(visible); 2559 if (topActivity != null) { 2560 sb.append(" topActivity=").append(topActivity); 2561 } 2562 sb.append("\n"); 2563 } 2564 return sb.toString(); 2565 } 2566 2567 @Override 2568 public String toString() { 2569 return toString(""); 2570 } 2571 } 2572 2573 /** 2574 * @hide 2575 */ 2576 @RequiresPermission(anyOf={Manifest.permission.CLEAR_APP_USER_DATA, 2577 Manifest.permission.ACCESS_INSTANT_APPS}) 2578 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2579 try { 2580 return getService().clearApplicationUserData(packageName, 2581 observer, UserHandle.myUserId()); 2582 } catch (RemoteException e) { 2583 throw e.rethrowFromSystemServer(); 2584 } 2585 } 2586 2587 /** 2588 * Permits an application to erase its own data from disk. This is equivalent to 2589 * the user choosing to clear the app's data from within the device settings UI. It 2590 * erases all dynamic data associated with the app -- its private data and data in its 2591 * private area on external storage -- but does not remove the installed application 2592 * itself, nor any OBB files. It also revokes all runtime permissions that the app has acquired, 2593 * clears all notifications and removes all Uri grants related to this application. 2594 * 2595 * @return {@code true} if the application successfully requested that the application's 2596 * data be erased; {@code false} otherwise. 2597 */ 2598 public boolean clearApplicationUserData() { 2599 return clearApplicationUserData(mContext.getPackageName(), null); 2600 } 2601 2602 2603 /** 2604 * Permits an application to get the persistent URI permissions granted to another. 2605 * 2606 * <p>Typically called by Settings. 2607 * 2608 * @param packageName application to look for the granted permissions 2609 * @return list of granted URI permissions 2610 * 2611 * @hide 2612 */ 2613 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2614 try { 2615 return getService().getGrantedUriPermissions(packageName, 2616 UserHandle.myUserId()); 2617 } catch (RemoteException e) { 2618 throw e.rethrowFromSystemServer(); 2619 } 2620 } 2621 2622 /** 2623 * Permits an application to clear the persistent URI permissions granted to another. 2624 * 2625 * <p>Typically called by Settings. 2626 * 2627 * @param packageName application to clear its granted permissions 2628 * 2629 * @hide 2630 */ 2631 public void clearGrantedUriPermissions(String packageName) { 2632 try { 2633 getService().clearGrantedUriPermissions(packageName, 2634 UserHandle.myUserId()); 2635 } catch (RemoteException e) { 2636 throw e.rethrowFromSystemServer(); 2637 } 2638 } 2639 2640 /** 2641 * Information you can retrieve about any processes that are in an error condition. 2642 */ 2643 public static class ProcessErrorStateInfo implements Parcelable { 2644 /** 2645 * Condition codes 2646 */ 2647 public static final int NO_ERROR = 0; 2648 public static final int CRASHED = 1; 2649 public static final int NOT_RESPONDING = 2; 2650 2651 /** 2652 * The condition that the process is in. 2653 */ 2654 public int condition; 2655 2656 /** 2657 * The process name in which the crash or error occurred. 2658 */ 2659 public String processName; 2660 2661 /** 2662 * The pid of this process; 0 if none 2663 */ 2664 public int pid; 2665 2666 /** 2667 * The kernel user-ID that has been assigned to this process; 2668 * currently this is not a unique ID (multiple applications can have 2669 * the same uid). 2670 */ 2671 public int uid; 2672 2673 /** 2674 * The activity name associated with the error, if known. May be null. 2675 */ 2676 public String tag; 2677 2678 /** 2679 * A short message describing the error condition. 2680 */ 2681 public String shortMsg; 2682 2683 /** 2684 * A long message describing the error condition. 2685 */ 2686 public String longMsg; 2687 2688 /** 2689 * The stack trace where the error originated. May be null. 2690 */ 2691 public String stackTrace; 2692 2693 /** 2694 * to be deprecated: This value will always be null. 2695 */ 2696 public byte[] crashData = null; 2697 2698 public ProcessErrorStateInfo() { 2699 } 2700 2701 @Override 2702 public int describeContents() { 2703 return 0; 2704 } 2705 2706 @Override 2707 public void writeToParcel(Parcel dest, int flags) { 2708 dest.writeInt(condition); 2709 dest.writeString(processName); 2710 dest.writeInt(pid); 2711 dest.writeInt(uid); 2712 dest.writeString(tag); 2713 dest.writeString(shortMsg); 2714 dest.writeString(longMsg); 2715 dest.writeString(stackTrace); 2716 } 2717 2718 public void readFromParcel(Parcel source) { 2719 condition = source.readInt(); 2720 processName = source.readString(); 2721 pid = source.readInt(); 2722 uid = source.readInt(); 2723 tag = source.readString(); 2724 shortMsg = source.readString(); 2725 longMsg = source.readString(); 2726 stackTrace = source.readString(); 2727 } 2728 2729 public static final Creator<ProcessErrorStateInfo> CREATOR = 2730 new Creator<ProcessErrorStateInfo>() { 2731 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2732 return new ProcessErrorStateInfo(source); 2733 } 2734 public ProcessErrorStateInfo[] newArray(int size) { 2735 return new ProcessErrorStateInfo[size]; 2736 } 2737 }; 2738 2739 private ProcessErrorStateInfo(Parcel source) { 2740 readFromParcel(source); 2741 } 2742 } 2743 2744 /** 2745 * Returns a list of any processes that are currently in an error condition. The result 2746 * will be null if all processes are running properly at this time. 2747 * 2748 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2749 * current error conditions (it will not return an empty list). This list ordering is not 2750 * specified. 2751 */ 2752 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2753 try { 2754 return getService().getProcessesInErrorState(); 2755 } catch (RemoteException e) { 2756 throw e.rethrowFromSystemServer(); 2757 } 2758 } 2759 2760 /** 2761 * Information you can retrieve about a running process. 2762 */ 2763 public static class RunningAppProcessInfo implements Parcelable { 2764 /** 2765 * The name of the process that this object is associated with 2766 */ 2767 public String processName; 2768 2769 /** 2770 * The pid of this process; 0 if none 2771 */ 2772 public int pid; 2773 2774 /** 2775 * The user id of this process. 2776 */ 2777 public int uid; 2778 2779 /** 2780 * All packages that have been loaded into the process. 2781 */ 2782 public String pkgList[]; 2783 2784 /** 2785 * Constant for {@link #flags}: this is an app that is unable to 2786 * correctly save its state when going to the background, 2787 * so it can not be killed while in the background. 2788 * @hide 2789 */ 2790 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2791 2792 /** 2793 * Constant for {@link #flags}: this process is associated with a 2794 * persistent system app. 2795 * @hide 2796 */ 2797 public static final int FLAG_PERSISTENT = 1<<1; 2798 2799 /** 2800 * Constant for {@link #flags}: this process is associated with a 2801 * persistent system app. 2802 * @hide 2803 */ 2804 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2805 2806 /** 2807 * Flags of information. May be any of 2808 * {@link #FLAG_CANT_SAVE_STATE}. 2809 * @hide 2810 */ 2811 public int flags; 2812 2813 /** 2814 * Last memory trim level reported to the process: corresponds to 2815 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2816 * ComponentCallbacks2.onTrimMemory(int)}. 2817 */ 2818 public int lastTrimLevel; 2819 2820 /** @hide */ 2821 @IntDef(prefix = { "IMPORTANCE_" }, value = { 2822 IMPORTANCE_FOREGROUND, 2823 IMPORTANCE_FOREGROUND_SERVICE, 2824 IMPORTANCE_TOP_SLEEPING, 2825 IMPORTANCE_VISIBLE, 2826 IMPORTANCE_PERCEPTIBLE, 2827 IMPORTANCE_CANT_SAVE_STATE, 2828 IMPORTANCE_SERVICE, 2829 IMPORTANCE_CACHED, 2830 IMPORTANCE_GONE, 2831 }) 2832 @Retention(RetentionPolicy.SOURCE) 2833 public @interface Importance {} 2834 2835 /** 2836 * Constant for {@link #importance}: This process is running the 2837 * foreground UI; that is, it is the thing currently at the top of the screen 2838 * that the user is interacting with. 2839 */ 2840 public static final int IMPORTANCE_FOREGROUND = 100; 2841 2842 /** 2843 * Constant for {@link #importance}: This process is running a foreground 2844 * service, for example to perform music playback even while the user is 2845 * not immediately in the app. This generally indicates that the process 2846 * is doing something the user actively cares about. 2847 */ 2848 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2849 2850 /** 2851 * Constant for {@link #importance}: This process is running the foreground 2852 * UI, but the device is asleep so it is not visible to the user. This means 2853 * the user is not really aware of the process, because they can not see or 2854 * interact with it, but it is quite important because it what they expect to 2855 * return to once unlocking the device. 2856 */ 2857 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2858 2859 /** 2860 * Constant for {@link #importance}: This process is running something 2861 * that is actively visible to the user, though not in the immediate 2862 * foreground. This may be running a window that is behind the current 2863 * foreground (so paused and with its state saved, not interacting with 2864 * the user, but visible to them to some degree); it may also be running 2865 * other services under the system's control that it inconsiders important. 2866 */ 2867 public static final int IMPORTANCE_VISIBLE = 200; 2868 2869 /** 2870 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 2871 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2872 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 2873 * 2874 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 2875 * on Android versions below {@link Build.VERSION_CODES#O}. 2876 * 2877 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 2878 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2879 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2880 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 2881 */ 2882 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 2883 2884 /** 2885 * Constant for {@link #importance}: This process is not something the user 2886 * is directly aware of, but is otherwise perceptible to them to some degree. 2887 */ 2888 public static final int IMPORTANCE_PERCEPTIBLE = 230; 2889 2890 /** 2891 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 2892 * this wrong value 2893 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2894 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 2895 * 2896 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 2897 * on Android versions below {@link Build.VERSION_CODES#O}. 2898 * 2899 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 2900 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2901 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2902 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 2903 * 2904 * @hide 2905 */ 2906 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 2907 2908 /** 2909 * Constant for {@link #importance}: This process is running an 2910 * application that can not save its state, and thus can't be killed 2911 * while in the background. 2912 * @hide 2913 */ 2914 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 2915 2916 /** 2917 * Constant for {@link #importance}: This process is contains services 2918 * that should remain running. These are background services apps have 2919 * started, not something the user is aware of, so they may be killed by 2920 * the system relatively freely (though it is generally desired that they 2921 * stay running as long as they want to). 2922 */ 2923 public static final int IMPORTANCE_SERVICE = 300; 2924 2925 /** 2926 * Constant for {@link #importance}: This process process contains 2927 * cached code that is expendable, not actively running any app components 2928 * we care about. 2929 */ 2930 public static final int IMPORTANCE_CACHED = 400; 2931 2932 /** 2933 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 2934 */ 2935 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 2936 2937 /** 2938 * Constant for {@link #importance}: This process is empty of any 2939 * actively running code. 2940 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 2941 */ 2942 @Deprecated 2943 public static final int IMPORTANCE_EMPTY = 500; 2944 2945 /** 2946 * Constant for {@link #importance}: This process does not exist. 2947 */ 2948 public static final int IMPORTANCE_GONE = 1000; 2949 2950 /** 2951 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 2952 * will be passed to a client, use {@link #procStateToImportanceForClient}. 2953 * @hide 2954 */ 2955 public static @Importance int procStateToImportance(int procState) { 2956 if (procState == PROCESS_STATE_NONEXISTENT) { 2957 return IMPORTANCE_GONE; 2958 } else if (procState >= PROCESS_STATE_HOME) { 2959 return IMPORTANCE_CACHED; 2960 } else if (procState >= PROCESS_STATE_SERVICE) { 2961 return IMPORTANCE_SERVICE; 2962 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2963 return IMPORTANCE_CANT_SAVE_STATE; 2964 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 2965 return IMPORTANCE_PERCEPTIBLE; 2966 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2967 return IMPORTANCE_VISIBLE; 2968 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2969 return IMPORTANCE_TOP_SLEEPING; 2970 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2971 return IMPORTANCE_FOREGROUND_SERVICE; 2972 } else { 2973 return IMPORTANCE_FOREGROUND; 2974 } 2975 } 2976 2977 /** 2978 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 2979 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 2980 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 2981 * client's target SDK < {@link VERSION_CODES#O}. 2982 * @hide 2983 */ 2984 public static @Importance int procStateToImportanceForClient(int procState, 2985 Context clientContext) { 2986 return procStateToImportanceForTargetSdk(procState, 2987 clientContext.getApplicationInfo().targetSdkVersion); 2988 } 2989 2990 /** 2991 * See {@link #procStateToImportanceForClient}. 2992 * @hide 2993 */ 2994 public static @Importance int procStateToImportanceForTargetSdk(int procState, 2995 int targetSdkVersion) { 2996 final int importance = procStateToImportance(procState); 2997 2998 // For pre O apps, convert to the old, wrong values. 2999 if (targetSdkVersion < VERSION_CODES.O) { 3000 switch (importance) { 3001 case IMPORTANCE_PERCEPTIBLE: 3002 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3003 case IMPORTANCE_CANT_SAVE_STATE: 3004 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3005 } 3006 } 3007 return importance; 3008 } 3009 3010 /** @hide */ 3011 public static int importanceToProcState(@Importance int importance) { 3012 if (importance == IMPORTANCE_GONE) { 3013 return PROCESS_STATE_NONEXISTENT; 3014 } else if (importance >= IMPORTANCE_CACHED) { 3015 return PROCESS_STATE_HOME; 3016 } else if (importance >= IMPORTANCE_SERVICE) { 3017 return PROCESS_STATE_SERVICE; 3018 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3019 return PROCESS_STATE_HEAVY_WEIGHT; 3020 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3021 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3022 } else if (importance >= IMPORTANCE_VISIBLE) { 3023 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3024 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3025 return PROCESS_STATE_TOP_SLEEPING; 3026 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3027 return PROCESS_STATE_FOREGROUND_SERVICE; 3028 } else { 3029 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3030 } 3031 } 3032 3033 /** 3034 * The relative importance level that the system places on this process. 3035 * These constants are numbered so that "more important" values are 3036 * always smaller than "less important" values. 3037 */ 3038 public @Importance int importance; 3039 3040 /** 3041 * An additional ordering within a particular {@link #importance} 3042 * category, providing finer-grained information about the relative 3043 * utility of processes within a category. This number means nothing 3044 * except that a smaller values are more recently used (and thus 3045 * more important). Currently an LRU value is only maintained for 3046 * the {@link #IMPORTANCE_CACHED} category, though others may 3047 * be maintained in the future. 3048 */ 3049 public int lru; 3050 3051 /** 3052 * Constant for {@link #importanceReasonCode}: nothing special has 3053 * been specified for the reason for this level. 3054 */ 3055 public static final int REASON_UNKNOWN = 0; 3056 3057 /** 3058 * Constant for {@link #importanceReasonCode}: one of the application's 3059 * content providers is being used by another process. The pid of 3060 * the client process is in {@link #importanceReasonPid} and the 3061 * target provider in this process is in 3062 * {@link #importanceReasonComponent}. 3063 */ 3064 public static final int REASON_PROVIDER_IN_USE = 1; 3065 3066 /** 3067 * Constant for {@link #importanceReasonCode}: one of the application's 3068 * content providers is being used by another process. The pid of 3069 * the client process is in {@link #importanceReasonPid} and the 3070 * target provider in this process is in 3071 * {@link #importanceReasonComponent}. 3072 */ 3073 public static final int REASON_SERVICE_IN_USE = 2; 3074 3075 /** 3076 * The reason for {@link #importance}, if any. 3077 */ 3078 public int importanceReasonCode; 3079 3080 /** 3081 * For the specified values of {@link #importanceReasonCode}, this 3082 * is the process ID of the other process that is a client of this 3083 * process. This will be 0 if no other process is using this one. 3084 */ 3085 public int importanceReasonPid; 3086 3087 /** 3088 * For the specified values of {@link #importanceReasonCode}, this 3089 * is the name of the component that is being used in this process. 3090 */ 3091 public ComponentName importanceReasonComponent; 3092 3093 /** 3094 * When {@link #importanceReasonPid} is non-0, this is the importance 3095 * of the other pid. @hide 3096 */ 3097 public int importanceReasonImportance; 3098 3099 /** 3100 * Current process state, as per PROCESS_STATE_* constants. 3101 * @hide 3102 */ 3103 public int processState; 3104 3105 public RunningAppProcessInfo() { 3106 importance = IMPORTANCE_FOREGROUND; 3107 importanceReasonCode = REASON_UNKNOWN; 3108 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3109 } 3110 3111 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3112 processName = pProcessName; 3113 pid = pPid; 3114 pkgList = pArr; 3115 } 3116 3117 public int describeContents() { 3118 return 0; 3119 } 3120 3121 public void writeToParcel(Parcel dest, int flags) { 3122 dest.writeString(processName); 3123 dest.writeInt(pid); 3124 dest.writeInt(uid); 3125 dest.writeStringArray(pkgList); 3126 dest.writeInt(this.flags); 3127 dest.writeInt(lastTrimLevel); 3128 dest.writeInt(importance); 3129 dest.writeInt(lru); 3130 dest.writeInt(importanceReasonCode); 3131 dest.writeInt(importanceReasonPid); 3132 ComponentName.writeToParcel(importanceReasonComponent, dest); 3133 dest.writeInt(importanceReasonImportance); 3134 dest.writeInt(processState); 3135 } 3136 3137 public void readFromParcel(Parcel source) { 3138 processName = source.readString(); 3139 pid = source.readInt(); 3140 uid = source.readInt(); 3141 pkgList = source.readStringArray(); 3142 flags = source.readInt(); 3143 lastTrimLevel = source.readInt(); 3144 importance = source.readInt(); 3145 lru = source.readInt(); 3146 importanceReasonCode = source.readInt(); 3147 importanceReasonPid = source.readInt(); 3148 importanceReasonComponent = ComponentName.readFromParcel(source); 3149 importanceReasonImportance = source.readInt(); 3150 processState = source.readInt(); 3151 } 3152 3153 public static final Creator<RunningAppProcessInfo> CREATOR = 3154 new Creator<RunningAppProcessInfo>() { 3155 public RunningAppProcessInfo createFromParcel(Parcel source) { 3156 return new RunningAppProcessInfo(source); 3157 } 3158 public RunningAppProcessInfo[] newArray(int size) { 3159 return new RunningAppProcessInfo[size]; 3160 } 3161 }; 3162 3163 private RunningAppProcessInfo(Parcel source) { 3164 readFromParcel(source); 3165 } 3166 } 3167 3168 /** 3169 * Returns a list of application processes installed on external media 3170 * that are running on the device. 3171 * 3172 * <p><b>Note: this method is only intended for debugging or building 3173 * a user-facing process management UI.</b></p> 3174 * 3175 * @return Returns a list of ApplicationInfo records, or null if none 3176 * This list ordering is not specified. 3177 * @hide 3178 */ 3179 public List<ApplicationInfo> getRunningExternalApplications() { 3180 try { 3181 return getService().getRunningExternalApplications(); 3182 } catch (RemoteException e) { 3183 throw e.rethrowFromSystemServer(); 3184 } 3185 } 3186 3187 /** 3188 * Sets the memory trim mode for a process and schedules a memory trim operation. 3189 * 3190 * <p><b>Note: this method is only intended for testing framework.</b></p> 3191 * 3192 * @return Returns true if successful. 3193 * @hide 3194 */ 3195 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3196 try { 3197 return getService().setProcessMemoryTrimLevel(process, userId, 3198 level); 3199 } catch (RemoteException e) { 3200 throw e.rethrowFromSystemServer(); 3201 } 3202 } 3203 3204 /** 3205 * Returns a list of application processes that are running on the device. 3206 * 3207 * <p><b>Note: this method is only intended for debugging or building 3208 * a user-facing process management UI.</b></p> 3209 * 3210 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3211 * running processes (it will not return an empty list). This list ordering is not 3212 * specified. 3213 */ 3214 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3215 try { 3216 return getService().getRunningAppProcesses(); 3217 } catch (RemoteException e) { 3218 throw e.rethrowFromSystemServer(); 3219 } 3220 } 3221 3222 /** 3223 * Return the importance of a given package name, based on the processes that are 3224 * currently running. The return value is one of the importance constants defined 3225 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3226 * processes that this package has code running inside of. If there are no processes 3227 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3228 * @hide 3229 */ 3230 @SystemApi @TestApi 3231 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3232 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3233 try { 3234 int procState = getService().getPackageProcessState(packageName, 3235 mContext.getOpPackageName()); 3236 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3237 } catch (RemoteException e) { 3238 throw e.rethrowFromSystemServer(); 3239 } 3240 } 3241 3242 /** 3243 * Return the importance of a given uid, based on the processes that are 3244 * currently running. The return value is one of the importance constants defined 3245 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3246 * processes that this uid has running. If there are no processes 3247 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3248 * @hide 3249 */ 3250 @SystemApi @TestApi 3251 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3252 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3253 try { 3254 int procState = getService().getUidProcessState(uid, 3255 mContext.getOpPackageName()); 3256 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3257 } catch (RemoteException e) { 3258 throw e.rethrowFromSystemServer(); 3259 } 3260 } 3261 3262 /** 3263 * Callback to get reports about changes to the importance of a uid. Use with 3264 * {@link #addOnUidImportanceListener}. 3265 * @hide 3266 */ 3267 @SystemApi @TestApi 3268 public interface OnUidImportanceListener { 3269 /** 3270 * The importance if a given uid has changed. Will be one of the importance 3271 * values in {@link RunningAppProcessInfo}; 3272 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3273 * when the uid is no longer running at all. This callback will happen on a thread 3274 * from a thread pool, not the main UI thread. 3275 * @param uid The uid whose importance has changed. 3276 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3277 */ 3278 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3279 } 3280 3281 /** 3282 * Start monitoring changes to the imoportance of uids running in the system. 3283 * @param listener The listener callback that will receive change reports. 3284 * @param importanceCutpoint The level of importance in which the caller is interested 3285 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3286 * is used here, you will receive a call each time a uids importance transitions between 3287 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3288 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3289 * 3290 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3291 * permission to use this feature.</p> 3292 * 3293 * @throws IllegalArgumentException If the listener is already registered. 3294 * @throws SecurityException If the caller does not hold 3295 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3296 * @hide 3297 */ 3298 @SystemApi @TestApi 3299 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3300 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3301 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3302 synchronized (this) { 3303 if (mImportanceListeners.containsKey(listener)) { 3304 throw new IllegalArgumentException("Listener already registered: " + listener); 3305 } 3306 // TODO: implement the cut point in the system process to avoid IPCs. 3307 UidObserver observer = new UidObserver(listener, mContext); 3308 try { 3309 getService().registerUidObserver(observer, 3310 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3311 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3312 mContext.getOpPackageName()); 3313 } catch (RemoteException e) { 3314 throw e.rethrowFromSystemServer(); 3315 } 3316 mImportanceListeners.put(listener, observer); 3317 } 3318 } 3319 3320 /** 3321 * Remove an importance listener that was previously registered with 3322 * {@link #addOnUidImportanceListener}. 3323 * 3324 * @throws IllegalArgumentException If the listener is not registered. 3325 * @hide 3326 */ 3327 @SystemApi @TestApi 3328 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3329 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3330 synchronized (this) { 3331 UidObserver observer = mImportanceListeners.remove(listener); 3332 if (observer == null) { 3333 throw new IllegalArgumentException("Listener not registered: " + listener); 3334 } 3335 try { 3336 getService().unregisterUidObserver(observer); 3337 } catch (RemoteException e) { 3338 throw e.rethrowFromSystemServer(); 3339 } 3340 } 3341 } 3342 3343 /** 3344 * Return global memory state information for the calling process. This 3345 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3346 * only fields that will be filled in are 3347 * {@link RunningAppProcessInfo#pid}, 3348 * {@link RunningAppProcessInfo#uid}, 3349 * {@link RunningAppProcessInfo#lastTrimLevel}, 3350 * {@link RunningAppProcessInfo#importance}, 3351 * {@link RunningAppProcessInfo#lru}, and 3352 * {@link RunningAppProcessInfo#importanceReasonCode}. 3353 */ 3354 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3355 try { 3356 getService().getMyMemoryState(outState); 3357 } catch (RemoteException e) { 3358 throw e.rethrowFromSystemServer(); 3359 } 3360 } 3361 3362 /** 3363 * Return information about the memory usage of one or more processes. 3364 * 3365 * <p><b>Note: this method is only intended for debugging or building 3366 * a user-facing process management UI.</b></p> 3367 * 3368 * @param pids The pids of the processes whose memory usage is to be 3369 * retrieved. 3370 * @return Returns an array of memory information, one for each 3371 * requested pid. 3372 */ 3373 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3374 try { 3375 return getService().getProcessMemoryInfo(pids); 3376 } catch (RemoteException e) { 3377 throw e.rethrowFromSystemServer(); 3378 } 3379 } 3380 3381 /** 3382 * @deprecated This is now just a wrapper for 3383 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3384 * is no longer available to applications because it allows them to 3385 * break other applications by removing their alarms, stopping their 3386 * services, etc. 3387 */ 3388 @Deprecated 3389 public void restartPackage(String packageName) { 3390 killBackgroundProcesses(packageName); 3391 } 3392 3393 /** 3394 * Have the system immediately kill all background processes associated 3395 * with the given package. This is the same as the kernel killing those 3396 * processes to reclaim memory; the system will take care of restarting 3397 * these processes in the future as needed. 3398 * 3399 * @param packageName The name of the package whose processes are to 3400 * be killed. 3401 */ 3402 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3403 public void killBackgroundProcesses(String packageName) { 3404 try { 3405 getService().killBackgroundProcesses(packageName, 3406 UserHandle.myUserId()); 3407 } catch (RemoteException e) { 3408 throw e.rethrowFromSystemServer(); 3409 } 3410 } 3411 3412 /** 3413 * Kills the specified UID. 3414 * @param uid The UID to kill. 3415 * @param reason The reason for the kill. 3416 * 3417 * @hide 3418 */ 3419 @SystemApi 3420 @RequiresPermission(Manifest.permission.KILL_UID) 3421 public void killUid(int uid, String reason) { 3422 try { 3423 getService().killUid(UserHandle.getAppId(uid), 3424 UserHandle.getUserId(uid), reason); 3425 } catch (RemoteException e) { 3426 throw e.rethrowFromSystemServer(); 3427 } 3428 } 3429 3430 /** 3431 * Have the system perform a force stop of everything associated with 3432 * the given application package. All processes that share its uid 3433 * will be killed, all services it has running stopped, all activities 3434 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3435 * broadcast will be sent, so that any of its registered alarms can 3436 * be stopped, notifications removed, etc. 3437 * 3438 * <p>You must hold the permission 3439 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3440 * call this method. 3441 * 3442 * @param packageName The name of the package to be stopped. 3443 * @param userId The user for which the running package is to be stopped. 3444 * 3445 * @hide This is not available to third party applications due to 3446 * it allowing them to break other applications by stopping their 3447 * services, removing their alarms, etc. 3448 */ 3449 public void forceStopPackageAsUser(String packageName, int userId) { 3450 try { 3451 getService().forceStopPackage(packageName, userId); 3452 } catch (RemoteException e) { 3453 throw e.rethrowFromSystemServer(); 3454 } 3455 } 3456 3457 /** 3458 * @see #forceStopPackageAsUser(String, int) 3459 * @hide 3460 */ 3461 @SystemApi 3462 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3463 public void forceStopPackage(String packageName) { 3464 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3465 } 3466 3467 /** 3468 * Get the device configuration attributes. 3469 */ 3470 public ConfigurationInfo getDeviceConfigurationInfo() { 3471 try { 3472 return getService().getDeviceConfigurationInfo(); 3473 } catch (RemoteException e) { 3474 throw e.rethrowFromSystemServer(); 3475 } 3476 } 3477 3478 /** 3479 * Get the preferred density of icons for the launcher. This is used when 3480 * custom drawables are created (e.g., for shortcuts). 3481 * 3482 * @return density in terms of DPI 3483 */ 3484 public int getLauncherLargeIconDensity() { 3485 final Resources res = mContext.getResources(); 3486 final int density = res.getDisplayMetrics().densityDpi; 3487 final int sw = res.getConfiguration().smallestScreenWidthDp; 3488 3489 if (sw < 600) { 3490 // Smaller than approx 7" tablets, use the regular icon size. 3491 return density; 3492 } 3493 3494 switch (density) { 3495 case DisplayMetrics.DENSITY_LOW: 3496 return DisplayMetrics.DENSITY_MEDIUM; 3497 case DisplayMetrics.DENSITY_MEDIUM: 3498 return DisplayMetrics.DENSITY_HIGH; 3499 case DisplayMetrics.DENSITY_TV: 3500 return DisplayMetrics.DENSITY_XHIGH; 3501 case DisplayMetrics.DENSITY_HIGH: 3502 return DisplayMetrics.DENSITY_XHIGH; 3503 case DisplayMetrics.DENSITY_XHIGH: 3504 return DisplayMetrics.DENSITY_XXHIGH; 3505 case DisplayMetrics.DENSITY_XXHIGH: 3506 return DisplayMetrics.DENSITY_XHIGH * 2; 3507 default: 3508 // The density is some abnormal value. Return some other 3509 // abnormal value that is a reasonable scaling of it. 3510 return (int)((density*1.5f)+.5f); 3511 } 3512 } 3513 3514 /** 3515 * Get the preferred launcher icon size. This is used when custom drawables 3516 * are created (e.g., for shortcuts). 3517 * 3518 * @return dimensions of square icons in terms of pixels 3519 */ 3520 public int getLauncherLargeIconSize() { 3521 return getLauncherLargeIconSizeInner(mContext); 3522 } 3523 3524 static int getLauncherLargeIconSizeInner(Context context) { 3525 final Resources res = context.getResources(); 3526 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3527 final int sw = res.getConfiguration().smallestScreenWidthDp; 3528 3529 if (sw < 600) { 3530 // Smaller than approx 7" tablets, use the regular icon size. 3531 return size; 3532 } 3533 3534 final int density = res.getDisplayMetrics().densityDpi; 3535 3536 switch (density) { 3537 case DisplayMetrics.DENSITY_LOW: 3538 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3539 case DisplayMetrics.DENSITY_MEDIUM: 3540 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3541 case DisplayMetrics.DENSITY_TV: 3542 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3543 case DisplayMetrics.DENSITY_HIGH: 3544 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3545 case DisplayMetrics.DENSITY_XHIGH: 3546 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3547 case DisplayMetrics.DENSITY_XXHIGH: 3548 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3549 default: 3550 // The density is some abnormal value. Return some other 3551 // abnormal value that is a reasonable scaling of it. 3552 return (int)((size*1.5f) + .5f); 3553 } 3554 } 3555 3556 /** 3557 * Returns "true" if the user interface is currently being messed with 3558 * by a monkey. 3559 */ 3560 public static boolean isUserAMonkey() { 3561 try { 3562 return getService().isUserAMonkey(); 3563 } catch (RemoteException e) { 3564 throw e.rethrowFromSystemServer(); 3565 } 3566 } 3567 3568 /** 3569 * Returns "true" if device is running in a test harness. 3570 */ 3571 public static boolean isRunningInTestHarness() { 3572 return SystemProperties.getBoolean("ro.test_harness", false); 3573 } 3574 3575 /** 3576 * Returns the launch count of each installed package. 3577 * 3578 * @hide 3579 */ 3580 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3581 try { 3582 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3583 ServiceManager.getService("usagestats")); 3584 if (usageStatsService == null) { 3585 return new HashMap<String, Integer>(); 3586 } 3587 3588 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3589 ActivityThread.currentPackageName()); 3590 if (allPkgUsageStats == null) { 3591 return new HashMap<String, Integer>(); 3592 } 3593 3594 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3595 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3596 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3597 } 3598 3599 return launchCounts; 3600 } catch (RemoteException e) { 3601 Log.w(TAG, "Could not query launch counts", e); 3602 return new HashMap<String, Integer>(); 3603 } 3604 }*/ 3605 3606 /** @hide */ 3607 public static int checkComponentPermission(String permission, int uid, 3608 int owningUid, boolean exported) { 3609 // Root, system server get to do everything. 3610 final int appId = UserHandle.getAppId(uid); 3611 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3612 return PackageManager.PERMISSION_GRANTED; 3613 } 3614 // Isolated processes don't get any permissions. 3615 if (UserHandle.isIsolated(uid)) { 3616 return PackageManager.PERMISSION_DENIED; 3617 } 3618 // If there is a uid that owns whatever is being accessed, it has 3619 // blanket access to it regardless of the permissions it requires. 3620 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3621 return PackageManager.PERMISSION_GRANTED; 3622 } 3623 // If the target is not exported, then nobody else can get to it. 3624 if (!exported) { 3625 /* 3626 RuntimeException here = new RuntimeException("here"); 3627 here.fillInStackTrace(); 3628 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3629 here); 3630 */ 3631 return PackageManager.PERMISSION_DENIED; 3632 } 3633 if (permission == null) { 3634 return PackageManager.PERMISSION_GRANTED; 3635 } 3636 try { 3637 return AppGlobals.getPackageManager() 3638 .checkUidPermission(permission, uid); 3639 } catch (RemoteException e) { 3640 throw e.rethrowFromSystemServer(); 3641 } 3642 } 3643 3644 /** @hide */ 3645 public static int checkUidPermission(String permission, int uid) { 3646 try { 3647 return AppGlobals.getPackageManager() 3648 .checkUidPermission(permission, uid); 3649 } catch (RemoteException e) { 3650 throw e.rethrowFromSystemServer(); 3651 } 3652 } 3653 3654 /** 3655 * @hide 3656 * Helper for dealing with incoming user arguments to system service calls. 3657 * Takes care of checking permissions and converting USER_CURRENT to the 3658 * actual current user. 3659 * 3660 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3661 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3662 * @param userId The user id argument supplied by the caller -- this is the user 3663 * they want to run as. 3664 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3665 * to get a USER_ALL returned and deal with it correctly. If false, 3666 * an exception will be thrown if USER_ALL is supplied. 3667 * @param requireFull If true, the caller must hold 3668 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3669 * different user than their current process; otherwise they must hold 3670 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3671 * @param name Optional textual name of the incoming call; only for generating error messages. 3672 * @param callerPackage Optional package name of caller; only for error messages. 3673 * 3674 * @return Returns the user ID that the call should run as. Will always be a concrete 3675 * user number, unless <var>allowAll</var> is true in which case it could also be 3676 * USER_ALL. 3677 */ 3678 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3679 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3680 if (UserHandle.getUserId(callingUid) == userId) { 3681 return userId; 3682 } 3683 try { 3684 return getService().handleIncomingUser(callingPid, 3685 callingUid, userId, allowAll, requireFull, name, callerPackage); 3686 } catch (RemoteException e) { 3687 throw e.rethrowFromSystemServer(); 3688 } 3689 } 3690 3691 /** 3692 * Gets the userId of the current foreground user. Requires system permissions. 3693 * @hide 3694 */ 3695 @SystemApi 3696 @RequiresPermission(anyOf = { 3697 "android.permission.INTERACT_ACROSS_USERS", 3698 "android.permission.INTERACT_ACROSS_USERS_FULL" 3699 }) 3700 public static int getCurrentUser() { 3701 UserInfo ui; 3702 try { 3703 ui = getService().getCurrentUser(); 3704 return ui != null ? ui.id : 0; 3705 } catch (RemoteException e) { 3706 throw e.rethrowFromSystemServer(); 3707 } 3708 } 3709 3710 /** 3711 * @param userid the user's id. Zero indicates the default user. 3712 * @hide 3713 */ 3714 public boolean switchUser(int userid) { 3715 try { 3716 return getService().switchUser(userid); 3717 } catch (RemoteException e) { 3718 throw e.rethrowFromSystemServer(); 3719 } 3720 } 3721 3722 /** 3723 * Logs out current current foreground user by switching to the system user and stopping the 3724 * user being switched from. 3725 * @hide 3726 */ 3727 public static void logoutCurrentUser() { 3728 int currentUser = ActivityManager.getCurrentUser(); 3729 if (currentUser != UserHandle.USER_SYSTEM) { 3730 try { 3731 getService().switchUser(UserHandle.USER_SYSTEM); 3732 getService().stopUser(currentUser, /* force= */ false, null); 3733 } catch (RemoteException e) { 3734 e.rethrowFromSystemServer(); 3735 } 3736 } 3737 } 3738 3739 /** {@hide} */ 3740 public static final int FLAG_OR_STOPPED = 1 << 0; 3741 /** {@hide} */ 3742 public static final int FLAG_AND_LOCKED = 1 << 1; 3743 /** {@hide} */ 3744 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3745 /** {@hide} */ 3746 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3747 3748 /** 3749 * Return whether the given user is actively running. This means that 3750 * the user is in the "started" state, not "stopped" -- it is currently 3751 * allowed to run code through scheduled alarms, receiving broadcasts, 3752 * etc. A started user may be either the current foreground user or a 3753 * background user; the result here does not distinguish between the two. 3754 * @param userId the user's id. Zero indicates the default user. 3755 * @hide 3756 */ 3757 public boolean isUserRunning(int userId) { 3758 try { 3759 return getService().isUserRunning(userId, 0); 3760 } catch (RemoteException e) { 3761 throw e.rethrowFromSystemServer(); 3762 } 3763 } 3764 3765 /** {@hide} */ 3766 public boolean isVrModePackageEnabled(ComponentName component) { 3767 try { 3768 return getService().isVrModePackageEnabled(component); 3769 } catch (RemoteException e) { 3770 throw e.rethrowFromSystemServer(); 3771 } 3772 } 3773 3774 /** 3775 * Perform a system dump of various state associated with the given application 3776 * package name. This call blocks while the dump is being performed, so should 3777 * not be done on a UI thread. The data will be written to the given file 3778 * descriptor as text. 3779 * @param fd The file descriptor that the dump should be written to. The file 3780 * descriptor is <em>not</em> closed by this function; the caller continues to 3781 * own it. 3782 * @param packageName The name of the package that is to be dumped. 3783 */ 3784 @RequiresPermission(Manifest.permission.DUMP) 3785 public void dumpPackageState(FileDescriptor fd, String packageName) { 3786 dumpPackageStateStatic(fd, packageName); 3787 } 3788 3789 /** 3790 * @hide 3791 */ 3792 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3793 FileOutputStream fout = new FileOutputStream(fd); 3794 PrintWriter pw = new FastPrintWriter(fout); 3795 dumpService(pw, fd, "package", new String[] { packageName }); 3796 pw.println(); 3797 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3798 "-a", "package", packageName }); 3799 pw.println(); 3800 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3801 pw.println(); 3802 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3803 pw.println(); 3804 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3805 pw.println(); 3806 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3807 pw.flush(); 3808 } 3809 3810 /** 3811 * @hide 3812 */ 3813 public static boolean isSystemReady() { 3814 if (!sSystemReady) { 3815 if (ActivityThread.isSystem()) { 3816 sSystemReady = 3817 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3818 } else { 3819 // Since this is being called from outside system server, system should be 3820 // ready by now. 3821 sSystemReady = true; 3822 } 3823 } 3824 return sSystemReady; 3825 } 3826 3827 /** 3828 * @hide 3829 */ 3830 public static void broadcastStickyIntent(Intent intent, int userId) { 3831 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3832 } 3833 3834 /** 3835 * Convenience for sending a sticky broadcast. For internal use only. 3836 * 3837 * @hide 3838 */ 3839 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3840 try { 3841 getService().broadcastIntent( 3842 null, intent, null, null, Activity.RESULT_OK, null, null, 3843 null /*permission*/, appOp, null, false, true, userId); 3844 } catch (RemoteException ex) { 3845 } 3846 } 3847 3848 /** 3849 * @hide 3850 */ 3851 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3852 String tag) { 3853 try { 3854 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3855 sourceUid, sourcePkg, tag); 3856 } catch (RemoteException ex) { 3857 } 3858 } 3859 3860 /** 3861 * @hide 3862 */ 3863 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3864 try { 3865 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3866 } catch (RemoteException ex) { 3867 } 3868 } 3869 3870 /** 3871 * @hide 3872 */ 3873 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3874 try { 3875 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3876 } catch (RemoteException ex) { 3877 } 3878 } 3879 3880 /** 3881 * @hide 3882 */ 3883 public static IActivityManager getService() { 3884 return IActivityManagerSingleton.get(); 3885 } 3886 3887 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3888 new Singleton<IActivityManager>() { 3889 @Override 3890 protected IActivityManager create() { 3891 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3892 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3893 return am; 3894 } 3895 }; 3896 3897 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3898 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3899 IBinder service = ServiceManager.checkService(name); 3900 if (service == null) { 3901 pw.println(" (Service not found)"); 3902 pw.flush(); 3903 return; 3904 } 3905 pw.flush(); 3906 if (service instanceof Binder) { 3907 // If this is a local object, it doesn't make sense to do an async dump with it, 3908 // just directly dump. 3909 try { 3910 service.dump(fd, args); 3911 } catch (Throwable e) { 3912 pw.println("Failure dumping service:"); 3913 e.printStackTrace(pw); 3914 pw.flush(); 3915 } 3916 } else { 3917 // Otherwise, it is remote, do the dump asynchronously to avoid blocking. 3918 TransferPipe tp = null; 3919 try { 3920 pw.flush(); 3921 tp = new TransferPipe(); 3922 tp.setBufferPrefix(" "); 3923 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3924 tp.go(fd, 10000); 3925 } catch (Throwable e) { 3926 if (tp != null) { 3927 tp.kill(); 3928 } 3929 pw.println("Failure dumping service:"); 3930 e.printStackTrace(pw); 3931 } 3932 } 3933 } 3934 3935 /** 3936 * Request that the system start watching for the calling process to exceed a pss 3937 * size as given here. Once called, the system will look for any occasions where it 3938 * sees the associated process with a larger pss size and, when this happens, automatically 3939 * pull a heap dump from it and allow the user to share the data. Note that this request 3940 * continues running even if the process is killed and restarted. To remove the watch, 3941 * use {@link #clearWatchHeapLimit()}. 3942 * 3943 * <p>This API only work if the calling process has been marked as 3944 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3945 * (userdebug or eng) build.</p> 3946 * 3947 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3948 * handle heap limit reports themselves.</p> 3949 * 3950 * @param pssSize The size in bytes to set the limit at. 3951 */ 3952 public void setWatchHeapLimit(long pssSize) { 3953 try { 3954 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3955 mContext.getPackageName()); 3956 } catch (RemoteException e) { 3957 throw e.rethrowFromSystemServer(); 3958 } 3959 } 3960 3961 /** 3962 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3963 * If your package has an activity handling this action, it will be launched with the 3964 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3965 * match the activty must support this action and a MIME type of "*/*". 3966 */ 3967 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3968 3969 /** 3970 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3971 */ 3972 public void clearWatchHeapLimit() { 3973 try { 3974 getService().setDumpHeapDebugLimit(null, 0, 0, null); 3975 } catch (RemoteException e) { 3976 throw e.rethrowFromSystemServer(); 3977 } 3978 } 3979 3980 /** 3981 * Return whether currently in lock task mode. When in this mode 3982 * no new tasks can be created or switched to. 3983 * 3984 * @see Activity#startLockTask() 3985 * 3986 * @deprecated Use {@link #getLockTaskModeState} instead. 3987 */ 3988 @Deprecated 3989 public boolean isInLockTaskMode() { 3990 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3991 } 3992 3993 /** 3994 * Return the current state of task locking. The three possible outcomes 3995 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3996 * and {@link #LOCK_TASK_MODE_PINNED}. 3997 * 3998 * @see Activity#startLockTask() 3999 */ 4000 public int getLockTaskModeState() { 4001 try { 4002 return getService().getLockTaskModeState(); 4003 } catch (RemoteException e) { 4004 throw e.rethrowFromSystemServer(); 4005 } 4006 } 4007 4008 /** 4009 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4010 * thread can be a VR thread in a process at a time, and that thread may be subject to 4011 * restrictions on the amount of time it can run. 4012 * 4013 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4014 * method will return to normal operation, and calling this method will do nothing while 4015 * persistent VR mode is enabled. 4016 * 4017 * To reset the VR thread for an application, a tid of 0 can be passed. 4018 * 4019 * @see android.os.Process#myTid() 4020 * @param tid tid of the VR thread 4021 */ 4022 public static void setVrThread(int tid) { 4023 try { 4024 getService().setVrThread(tid); 4025 } catch (RemoteException e) { 4026 // pass 4027 } 4028 } 4029 4030 /** 4031 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4032 * beyond a single process. Only one thread can be a 4033 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4034 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4035 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4036 * persistent VR thread loses its new scheduling priority; this method must be called again to 4037 * set the persistent thread. 4038 * 4039 * To reset the persistent VR thread, a tid of 0 can be passed. 4040 * 4041 * @see android.os.Process#myTid() 4042 * @param tid tid of the VR thread 4043 * @hide 4044 */ 4045 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4046 public static void setPersistentVrThread(int tid) { 4047 try { 4048 getService().setPersistentVrThread(tid); 4049 } catch (RemoteException e) { 4050 // pass 4051 } 4052 } 4053 4054 /** 4055 * The AppTask allows you to manage your own application's tasks. 4056 * See {@link android.app.ActivityManager#getAppTasks()} 4057 */ 4058 public static class AppTask { 4059 private IAppTask mAppTaskImpl; 4060 4061 /** @hide */ 4062 public AppTask(IAppTask task) { 4063 mAppTaskImpl = task; 4064 } 4065 4066 /** 4067 * Finishes all activities in this task and removes it from the recent tasks list. 4068 */ 4069 public void finishAndRemoveTask() { 4070 try { 4071 mAppTaskImpl.finishAndRemoveTask(); 4072 } catch (RemoteException e) { 4073 throw e.rethrowFromSystemServer(); 4074 } 4075 } 4076 4077 /** 4078 * Get the RecentTaskInfo associated with this task. 4079 * 4080 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4081 */ 4082 public RecentTaskInfo getTaskInfo() { 4083 try { 4084 return mAppTaskImpl.getTaskInfo(); 4085 } catch (RemoteException e) { 4086 throw e.rethrowFromSystemServer(); 4087 } 4088 } 4089 4090 /** 4091 * Bring this task to the foreground. If it contains activities, they will be 4092 * brought to the foreground with it and their instances re-created if needed. 4093 * If it doesn't contain activities, the root activity of the task will be 4094 * re-launched. 4095 */ 4096 public void moveToFront() { 4097 try { 4098 mAppTaskImpl.moveToFront(); 4099 } catch (RemoteException e) { 4100 throw e.rethrowFromSystemServer(); 4101 } 4102 } 4103 4104 /** 4105 * Start an activity in this task. Brings the task to the foreground. If this task 4106 * is not currently active (that is, its id < 0), then a new activity for the given 4107 * Intent will be launched as the root of the task and the task brought to the 4108 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4109 * an activity to launch in a new task, then a new activity for the given Intent will 4110 * be launched on top of the task and the task brought to the foreground. If this 4111 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4112 * or would otherwise be launched in to a new task, then the activity not launched but 4113 * this task be brought to the foreground and a new intent delivered to the top 4114 * activity if appropriate. 4115 * 4116 * <p>In other words, you generally want to use an Intent here that does not specify 4117 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4118 * and let the system do the right thing.</p> 4119 * 4120 * @param intent The Intent describing the new activity to be launched on the task. 4121 * @param options Optional launch options. 4122 * 4123 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4124 */ 4125 public void startActivity(Context context, Intent intent, Bundle options) { 4126 ActivityThread thread = ActivityThread.currentActivityThread(); 4127 thread.getInstrumentation().execStartActivityFromAppTask(context, 4128 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4129 } 4130 4131 /** 4132 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4133 * Intent of this AppTask. 4134 * 4135 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4136 * be set; otherwise, it will be cleared. 4137 */ 4138 public void setExcludeFromRecents(boolean exclude) { 4139 try { 4140 mAppTaskImpl.setExcludeFromRecents(exclude); 4141 } catch (RemoteException e) { 4142 throw e.rethrowFromSystemServer(); 4143 } 4144 } 4145 } 4146} 4147