ActivityManager.java revision efdede0f4a04dda8eb1a3e527962f727e4725839
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 has an activity that corresponds 523 * to an existing recent task. */ 524 public static final int PROCESS_STATE_CACHED_RECENT = 17; 525 526 /** @hide Process is being cached for later use and is empty. */ 527 public static final int PROCESS_STATE_CACHED_EMPTY = 18; 528 529 /** @hide Process does not exist. */ 530 public static final int PROCESS_STATE_NONEXISTENT = 19; 531 532 // NOTE: If PROCESS_STATEs are added or changed, then new fields must be added 533 // to frameworks/base/core/proto/android/app/activitymanager.proto and the following method must 534 // be updated to correctly map between them. 535 /** 536 * Maps ActivityManager.PROCESS_STATE_ values to ActivityManagerProto.ProcessState enum. 537 * 538 * @param amInt a process state of the form ActivityManager.PROCESS_STATE_ 539 * @return the value of the corresponding android.app.ActivityManagerProto's ProcessState enum. 540 * @hide 541 */ 542 public static final int processStateAmToProto(int amInt) { 543 return amInt * 100; 544 } 545 546 /** @hide The lowest process state number */ 547 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 548 549 /** @hide The highest process state number */ 550 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 551 552 /** @hide Should this process state be considered a background state? */ 553 public static final boolean isProcStateBackground(int procState) { 554 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 555 } 556 557 /** @hide requestType for assist context: only basic information. */ 558 public static final int ASSIST_CONTEXT_BASIC = 0; 559 560 /** @hide requestType for assist context: generate full AssistStructure. */ 561 public static final int ASSIST_CONTEXT_FULL = 1; 562 563 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 564 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 565 566 /** @hide Flag for registerUidObserver: report changes in process state. */ 567 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 568 569 /** @hide Flag for registerUidObserver: report uid gone. */ 570 public static final int UID_OBSERVER_GONE = 1<<1; 571 572 /** @hide Flag for registerUidObserver: report uid has become idle. */ 573 public static final int UID_OBSERVER_IDLE = 1<<2; 574 575 /** @hide Flag for registerUidObserver: report uid has become active. */ 576 public static final int UID_OBSERVER_ACTIVE = 1<<3; 577 578 /** @hide Flag for registerUidObserver: report uid cached state has changed. */ 579 public static final int UID_OBSERVER_CACHED = 1<<4; 580 581 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 582 public static final int APP_START_MODE_NORMAL = 0; 583 584 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 585 public static final int APP_START_MODE_DELAYED = 1; 586 587 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 588 * rigid errors (throwing exception). */ 589 public static final int APP_START_MODE_DELAYED_RIGID = 2; 590 591 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 592 * launches; this is the mode for ephemeral apps. */ 593 public static final int APP_START_MODE_DISABLED = 3; 594 595 /** 596 * Lock task mode is not active. 597 */ 598 public static final int LOCK_TASK_MODE_NONE = 0; 599 600 /** 601 * Full lock task mode is active. 602 */ 603 public static final int LOCK_TASK_MODE_LOCKED = 1; 604 605 /** 606 * App pinning mode is active. 607 */ 608 public static final int LOCK_TASK_MODE_PINNED = 2; 609 610 Point mAppTaskThumbnailSize; 611 612 /*package*/ ActivityManager(Context context, Handler handler) { 613 mContext = context; 614 } 615 616 /** 617 * Returns whether the launch was successful. 618 * @hide 619 */ 620 public static final boolean isStartResultSuccessful(int result) { 621 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 622 } 623 624 /** 625 * Returns whether the launch result was a fatal error. 626 * @hide 627 */ 628 public static final boolean isStartResultFatalError(int result) { 629 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 630 } 631 632 /** 633 * Screen compatibility mode: the application most always run in 634 * compatibility mode. 635 * @hide 636 */ 637 public static final int COMPAT_MODE_ALWAYS = -1; 638 639 /** 640 * Screen compatibility mode: the application can never run in 641 * compatibility mode. 642 * @hide 643 */ 644 public static final int COMPAT_MODE_NEVER = -2; 645 646 /** 647 * Screen compatibility mode: unknown. 648 * @hide 649 */ 650 public static final int COMPAT_MODE_UNKNOWN = -3; 651 652 /** 653 * Screen compatibility mode: the application currently has compatibility 654 * mode disabled. 655 * @hide 656 */ 657 public static final int COMPAT_MODE_DISABLED = 0; 658 659 /** 660 * Screen compatibility mode: the application currently has compatibility 661 * mode enabled. 662 * @hide 663 */ 664 public static final int COMPAT_MODE_ENABLED = 1; 665 666 /** 667 * Screen compatibility mode: request to toggle the application's 668 * compatibility mode. 669 * @hide 670 */ 671 public static final int COMPAT_MODE_TOGGLE = 2; 672 673 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 674 SystemProperties.getBoolean("debug.force_low_ram", false); 675 676 /** @hide */ 677 @TestApi 678 public static class StackId { 679 680 private StackId() { 681 } 682 683 /** Invalid stack ID. */ 684 public static final int INVALID_STACK_ID = -1; 685 686 } 687 688 /** 689 * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} 690 * which specifies the position of the created docked stack at the top half of the screen if 691 * in portrait mode or at the left half of the screen if in landscape mode. 692 * @hide 693 */ 694 @TestApi 695 public static final int SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT = 0; 696 697 /** 698 * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} 699 * which 700 * specifies the position of the created docked stack at the bottom half of the screen if 701 * in portrait mode or at the right half of the screen if in landscape mode. 702 * @hide 703 */ 704 @TestApi 705 public static final int SPLIT_SCREEN_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 706 707 /** 708 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 709 * that the resize doesn't need to preserve the window, and can be skipped if bounds 710 * is unchanged. This mode is used by window manager in most cases. 711 * @hide 712 */ 713 public static final int RESIZE_MODE_SYSTEM = 0; 714 715 /** 716 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 717 * that the resize should preserve the window if possible. 718 * @hide 719 */ 720 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 721 722 /** 723 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 724 * that the resize should be performed even if the bounds appears unchanged. 725 * @hide 726 */ 727 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 728 729 /** 730 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 731 * manager during a screen rotation. 732 * @hide 733 */ 734 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 735 736 /** 737 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 738 * resize is due to a drag action. 739 * @hide 740 */ 741 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 742 743 /** 744 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 745 * that the resize should preserve the window if possible, and should not be skipped 746 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 747 * is ending. 748 * @hide 749 */ 750 public static final int RESIZE_MODE_USER_FORCED = 751 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 752 753 /** @hide */ 754 public int getFrontActivityScreenCompatMode() { 755 try { 756 return getService().getFrontActivityScreenCompatMode(); 757 } catch (RemoteException e) { 758 throw e.rethrowFromSystemServer(); 759 } 760 } 761 762 /** @hide */ 763 public void setFrontActivityScreenCompatMode(int mode) { 764 try { 765 getService().setFrontActivityScreenCompatMode(mode); 766 } catch (RemoteException e) { 767 throw e.rethrowFromSystemServer(); 768 } 769 } 770 771 /** @hide */ 772 public int getPackageScreenCompatMode(String packageName) { 773 try { 774 return getService().getPackageScreenCompatMode(packageName); 775 } catch (RemoteException e) { 776 throw e.rethrowFromSystemServer(); 777 } 778 } 779 780 /** @hide */ 781 public void setPackageScreenCompatMode(String packageName, int mode) { 782 try { 783 getService().setPackageScreenCompatMode(packageName, mode); 784 } catch (RemoteException e) { 785 throw e.rethrowFromSystemServer(); 786 } 787 } 788 789 /** @hide */ 790 public boolean getPackageAskScreenCompat(String packageName) { 791 try { 792 return getService().getPackageAskScreenCompat(packageName); 793 } catch (RemoteException e) { 794 throw e.rethrowFromSystemServer(); 795 } 796 } 797 798 /** @hide */ 799 public void setPackageAskScreenCompat(String packageName, boolean ask) { 800 try { 801 getService().setPackageAskScreenCompat(packageName, ask); 802 } catch (RemoteException e) { 803 throw e.rethrowFromSystemServer(); 804 } 805 } 806 807 /** 808 * Return the approximate per-application memory class of the current 809 * device. This gives you an idea of how hard a memory limit you should 810 * impose on your application to let the overall system work best. The 811 * returned value is in megabytes; the baseline Android memory class is 812 * 16 (which happens to be the Java heap limit of those devices); some 813 * device with more memory may return 24 or even higher numbers. 814 */ 815 public int getMemoryClass() { 816 return staticGetMemoryClass(); 817 } 818 819 /** @hide */ 820 static public int staticGetMemoryClass() { 821 // Really brain dead right now -- just take this from the configured 822 // vm heap size, and assume it is in megabytes and thus ends with "m". 823 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 824 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 825 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 826 } 827 return staticGetLargeMemoryClass(); 828 } 829 830 /** 831 * Return the approximate per-application memory class of the current 832 * device when an application is running with a large heap. This is the 833 * space available for memory-intensive applications; most applications 834 * should not need this amount of memory, and should instead stay with the 835 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 836 * This may be the same size as {@link #getMemoryClass()} on memory 837 * constrained devices, or it may be significantly larger on devices with 838 * a large amount of available RAM. 839 * 840 * <p>The is the size of the application's Dalvik heap if it has 841 * specified <code>android:largeHeap="true"</code> in its manifest. 842 */ 843 public int getLargeMemoryClass() { 844 return staticGetLargeMemoryClass(); 845 } 846 847 /** @hide */ 848 static public int staticGetLargeMemoryClass() { 849 // Really brain dead right now -- just take this from the configured 850 // vm heap size, and assume it is in megabytes and thus ends with "m". 851 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 852 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 853 } 854 855 /** 856 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 857 * is ultimately up to the device configuration, but currently it generally means 858 * something with 1GB or less of RAM. This is mostly intended to be used by apps 859 * to determine whether they should turn off certain features that require more RAM. 860 */ 861 public boolean isLowRamDevice() { 862 return isLowRamDeviceStatic(); 863 } 864 865 /** @hide */ 866 public static boolean isLowRamDeviceStatic() { 867 return RoSystemProperties.CONFIG_LOW_RAM || 868 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 869 } 870 871 /** 872 * Returns true if this is a small battery device. Exactly whether a device is considered to be 873 * small battery is ultimately up to the device configuration, but currently it generally means 874 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 875 * to determine whether certain features should be altered to account for a drastically smaller 876 * battery. 877 * @hide 878 */ 879 public static boolean isSmallBatteryDevice() { 880 return RoSystemProperties.CONFIG_SMALL_BATTERY; 881 } 882 883 /** 884 * Used by persistent processes to determine if they are running on a 885 * higher-end device so should be okay using hardware drawing acceleration 886 * (which tends to consume a lot more RAM). 887 * @hide 888 */ 889 static public boolean isHighEndGfx() { 890 return !isLowRamDeviceStatic() && 891 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 892 } 893 894 /** 895 * Return the maximum number of recents entries that we will maintain and show. 896 * @hide 897 */ 898 static public int getMaxRecentTasksStatic() { 899 if (gMaxRecentTasks < 0) { 900 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 901 } 902 return gMaxRecentTasks; 903 } 904 905 /** 906 * Return the default limit on the number of recents that an app can make. 907 * @hide 908 */ 909 static public int getDefaultAppRecentsLimitStatic() { 910 return getMaxRecentTasksStatic() / 6; 911 } 912 913 /** 914 * Return the maximum limit on the number of recents that an app can make. 915 * @hide 916 */ 917 static public int getMaxAppRecentsLimitStatic() { 918 return getMaxRecentTasksStatic() / 2; 919 } 920 921 /** 922 * Returns true if the system supports at least one form of multi-window. 923 * E.g. freeform, split-screen, picture-in-picture. 924 * @hide 925 */ 926 @TestApi 927 static public boolean supportsMultiWindow(Context context) { 928 // On watches, multi-window is used to present essential system UI, and thus it must be 929 // supported regardless of device memory characteristics. 930 boolean isWatch = context.getPackageManager().hasSystemFeature( 931 PackageManager.FEATURE_WATCH); 932 return (!isLowRamDeviceStatic() || isWatch) 933 && Resources.getSystem().getBoolean( 934 com.android.internal.R.bool.config_supportsMultiWindow); 935 } 936 937 /** 938 * Returns true if the system supports split screen multi-window. 939 * @hide 940 */ 941 @TestApi 942 static public boolean supportsSplitScreenMultiWindow(Context context) { 943 return supportsMultiWindow(context) 944 && Resources.getSystem().getBoolean( 945 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 946 } 947 948 /** @removed */ 949 @Deprecated 950 public static int getMaxNumPictureInPictureActions() { 951 return 3; 952 } 953 954 /** 955 * Information you can set and retrieve about the current activity within the recent task list. 956 */ 957 public static class TaskDescription implements Parcelable { 958 /** @hide */ 959 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 960 private static final String ATTR_TASKDESCRIPTIONLABEL = 961 ATTR_TASKDESCRIPTION_PREFIX + "label"; 962 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 963 ATTR_TASKDESCRIPTION_PREFIX + "color"; 964 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 965 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 966 private static final String ATTR_TASKDESCRIPTIONICON_FILENAME = 967 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 968 private static final String ATTR_TASKDESCRIPTIONICON_RESOURCE = 969 ATTR_TASKDESCRIPTION_PREFIX + "icon_resource"; 970 971 private String mLabel; 972 private Bitmap mIcon; 973 private int mIconRes; 974 private String mIconFilename; 975 private int mColorPrimary; 976 private int mColorBackground; 977 private int mStatusBarColor; 978 private int mNavigationBarColor; 979 980 /** 981 * Creates the TaskDescription to the specified values. 982 * 983 * @param label A label and description of the current state of this task. 984 * @param icon An icon that represents the current state of this task. 985 * @param colorPrimary A color to override the theme's primary color. This color must be 986 * opaque. 987 * @deprecated use TaskDescription constructor with icon resource instead 988 */ 989 @Deprecated 990 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 991 this(label, icon, 0, null, colorPrimary, 0, 0, 0); 992 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 993 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 994 } 995 } 996 997 /** 998 * Creates the TaskDescription to the specified values. 999 * 1000 * @param label A label and description of the current state of this task. 1001 * @param iconRes A drawable resource of an icon that represents the current state of this 1002 * activity. 1003 * @param colorPrimary A color to override the theme's primary color. This color must be 1004 * opaque. 1005 */ 1006 public TaskDescription(String label, @DrawableRes int iconRes, int colorPrimary) { 1007 this(label, null, iconRes, null, colorPrimary, 0, 0, 0); 1008 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1009 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1010 } 1011 } 1012 1013 /** 1014 * Creates the TaskDescription to the specified values. 1015 * 1016 * @param label A label and description of the current state of this activity. 1017 * @param icon An icon that represents the current state of this activity. 1018 * @deprecated use TaskDescription constructor with icon resource instead 1019 */ 1020 @Deprecated 1021 public TaskDescription(String label, Bitmap icon) { 1022 this(label, icon, 0, null, 0, 0, 0, 0); 1023 } 1024 1025 /** 1026 * Creates the TaskDescription to the specified values. 1027 * 1028 * @param label A label and description of the current state of this activity. 1029 * @param iconRes A drawable resource of an icon that represents the current state of this 1030 * activity. 1031 */ 1032 public TaskDescription(String label, @DrawableRes int iconRes) { 1033 this(label, null, iconRes, null, 0, 0, 0, 0); 1034 } 1035 1036 /** 1037 * Creates the TaskDescription to the specified values. 1038 * 1039 * @param label A label and description of the current state of this activity. 1040 */ 1041 public TaskDescription(String label) { 1042 this(label, null, 0, null, 0, 0, 0, 0); 1043 } 1044 1045 /** 1046 * Creates an empty TaskDescription. 1047 */ 1048 public TaskDescription() { 1049 this(null, null, 0, null, 0, 0, 0, 0); 1050 } 1051 1052 /** @hide */ 1053 public TaskDescription(String label, Bitmap bitmap, int iconRes, String iconFilename, 1054 int colorPrimary, int colorBackground, int statusBarColor, int navigationBarColor) { 1055 mLabel = label; 1056 mIcon = bitmap; 1057 mIconRes = iconRes; 1058 mIconFilename = iconFilename; 1059 mColorPrimary = colorPrimary; 1060 mColorBackground = colorBackground; 1061 mStatusBarColor = statusBarColor; 1062 mNavigationBarColor = navigationBarColor; 1063 } 1064 1065 /** 1066 * Creates a copy of another TaskDescription. 1067 */ 1068 public TaskDescription(TaskDescription td) { 1069 copyFrom(td); 1070 } 1071 1072 /** 1073 * Copies this the values from another TaskDescription. 1074 * @hide 1075 */ 1076 public void copyFrom(TaskDescription other) { 1077 mLabel = other.mLabel; 1078 mIcon = other.mIcon; 1079 mIconRes = other.mIconRes; 1080 mIconFilename = other.mIconFilename; 1081 mColorPrimary = other.mColorPrimary; 1082 mColorBackground = other.mColorBackground; 1083 mStatusBarColor = other.mStatusBarColor; 1084 mNavigationBarColor = other.mNavigationBarColor; 1085 } 1086 1087 /** 1088 * Copies this the values from another TaskDescription, but preserves the hidden fields 1089 * if they weren't set on {@code other} 1090 * @hide 1091 */ 1092 public void copyFromPreserveHiddenFields(TaskDescription other) { 1093 mLabel = other.mLabel; 1094 mIcon = other.mIcon; 1095 mIconRes = other.mIconRes; 1096 mIconFilename = other.mIconFilename; 1097 mColorPrimary = other.mColorPrimary; 1098 if (other.mColorBackground != 0) { 1099 mColorBackground = other.mColorBackground; 1100 } 1101 if (other.mStatusBarColor != 0) { 1102 mStatusBarColor = other.mStatusBarColor; 1103 } 1104 if (other.mNavigationBarColor != 0) { 1105 mNavigationBarColor = other.mNavigationBarColor; 1106 } 1107 } 1108 1109 private TaskDescription(Parcel source) { 1110 readFromParcel(source); 1111 } 1112 1113 /** 1114 * Sets the label for this task description. 1115 * @hide 1116 */ 1117 public void setLabel(String label) { 1118 mLabel = label; 1119 } 1120 1121 /** 1122 * Sets the primary color for this task description. 1123 * @hide 1124 */ 1125 public void setPrimaryColor(int primaryColor) { 1126 // Ensure that the given color is valid 1127 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1128 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1129 } 1130 mColorPrimary = primaryColor; 1131 } 1132 1133 /** 1134 * Sets the background color for this task description. 1135 * @hide 1136 */ 1137 public void setBackgroundColor(int backgroundColor) { 1138 // Ensure that the given color is valid 1139 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1140 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1141 } 1142 mColorBackground = backgroundColor; 1143 } 1144 1145 /** 1146 * @hide 1147 */ 1148 public void setStatusBarColor(int statusBarColor) { 1149 mStatusBarColor = statusBarColor; 1150 } 1151 1152 /** 1153 * @hide 1154 */ 1155 public void setNavigationBarColor(int navigationBarColor) { 1156 mNavigationBarColor = navigationBarColor; 1157 } 1158 1159 /** 1160 * Sets the icon for this task description. 1161 * @hide 1162 */ 1163 public void setIcon(Bitmap icon) { 1164 mIcon = icon; 1165 } 1166 1167 /** 1168 * Sets the icon resource for this task description. 1169 * @hide 1170 */ 1171 public void setIcon(int iconRes) { 1172 mIconRes = iconRes; 1173 } 1174 1175 /** 1176 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1177 * bitmap. 1178 * @hide 1179 */ 1180 public void setIconFilename(String iconFilename) { 1181 mIconFilename = iconFilename; 1182 mIcon = null; 1183 } 1184 1185 /** 1186 * @return The label and description of the current state of this task. 1187 */ 1188 public String getLabel() { 1189 return mLabel; 1190 } 1191 1192 /** 1193 * @return The icon that represents the current state of this task. 1194 */ 1195 public Bitmap getIcon() { 1196 if (mIcon != null) { 1197 return mIcon; 1198 } 1199 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1200 } 1201 1202 /** @hide */ 1203 @TestApi 1204 public int getIconResource() { 1205 return mIconRes; 1206 } 1207 1208 /** @hide */ 1209 @TestApi 1210 public String getIconFilename() { 1211 return mIconFilename; 1212 } 1213 1214 /** @hide */ 1215 public Bitmap getInMemoryIcon() { 1216 return mIcon; 1217 } 1218 1219 /** @hide */ 1220 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1221 if (iconFilename != null) { 1222 try { 1223 return getService().getTaskDescriptionIcon(iconFilename, 1224 userId); 1225 } catch (RemoteException e) { 1226 throw e.rethrowFromSystemServer(); 1227 } 1228 } 1229 return null; 1230 } 1231 1232 /** 1233 * @return The color override on the theme's primary color. 1234 */ 1235 public int getPrimaryColor() { 1236 return mColorPrimary; 1237 } 1238 1239 /** 1240 * @return The background color. 1241 * @hide 1242 */ 1243 public int getBackgroundColor() { 1244 return mColorBackground; 1245 } 1246 1247 /** 1248 * @hide 1249 */ 1250 public int getStatusBarColor() { 1251 return mStatusBarColor; 1252 } 1253 1254 /** 1255 * @hide 1256 */ 1257 public int getNavigationBarColor() { 1258 return mNavigationBarColor; 1259 } 1260 1261 /** @hide */ 1262 public void saveToXml(XmlSerializer out) throws IOException { 1263 if (mLabel != null) { 1264 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1265 } 1266 if (mColorPrimary != 0) { 1267 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1268 Integer.toHexString(mColorPrimary)); 1269 } 1270 if (mColorBackground != 0) { 1271 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1272 Integer.toHexString(mColorBackground)); 1273 } 1274 if (mIconFilename != null) { 1275 out.attribute(null, ATTR_TASKDESCRIPTIONICON_FILENAME, mIconFilename); 1276 } 1277 if (mIconRes != 0) { 1278 out.attribute(null, ATTR_TASKDESCRIPTIONICON_RESOURCE, Integer.toString(mIconRes)); 1279 } 1280 } 1281 1282 /** @hide */ 1283 public void restoreFromXml(String attrName, String attrValue) { 1284 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1285 setLabel(attrValue); 1286 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1287 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1288 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1289 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1290 } else if (ATTR_TASKDESCRIPTIONICON_FILENAME.equals(attrName)) { 1291 setIconFilename(attrValue); 1292 } else if (ATTR_TASKDESCRIPTIONICON_RESOURCE.equals(attrName)) { 1293 setIcon(Integer.parseInt(attrValue, 10)); 1294 } 1295 } 1296 1297 @Override 1298 public int describeContents() { 1299 return 0; 1300 } 1301 1302 @Override 1303 public void writeToParcel(Parcel dest, int flags) { 1304 if (mLabel == null) { 1305 dest.writeInt(0); 1306 } else { 1307 dest.writeInt(1); 1308 dest.writeString(mLabel); 1309 } 1310 if (mIcon == null) { 1311 dest.writeInt(0); 1312 } else { 1313 dest.writeInt(1); 1314 mIcon.writeToParcel(dest, 0); 1315 } 1316 dest.writeInt(mIconRes); 1317 dest.writeInt(mColorPrimary); 1318 dest.writeInt(mColorBackground); 1319 dest.writeInt(mStatusBarColor); 1320 dest.writeInt(mNavigationBarColor); 1321 if (mIconFilename == null) { 1322 dest.writeInt(0); 1323 } else { 1324 dest.writeInt(1); 1325 dest.writeString(mIconFilename); 1326 } 1327 } 1328 1329 public void readFromParcel(Parcel source) { 1330 mLabel = source.readInt() > 0 ? source.readString() : null; 1331 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1332 mIconRes = source.readInt(); 1333 mColorPrimary = source.readInt(); 1334 mColorBackground = source.readInt(); 1335 mStatusBarColor = source.readInt(); 1336 mNavigationBarColor = source.readInt(); 1337 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1338 } 1339 1340 public static final Creator<TaskDescription> CREATOR 1341 = new Creator<TaskDescription>() { 1342 public TaskDescription createFromParcel(Parcel source) { 1343 return new TaskDescription(source); 1344 } 1345 public TaskDescription[] newArray(int size) { 1346 return new TaskDescription[size]; 1347 } 1348 }; 1349 1350 @Override 1351 public String toString() { 1352 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1353 " IconRes: " + mIconRes + " IconFilename: " + mIconFilename + 1354 " colorPrimary: " + mColorPrimary + " colorBackground: " + mColorBackground + 1355 " statusBarColor: " + mColorBackground + 1356 " navigationBarColor: " + mNavigationBarColor; 1357 } 1358 } 1359 1360 /** 1361 * Information you can retrieve about tasks that the user has most recently 1362 * started or visited. 1363 */ 1364 public static class RecentTaskInfo implements Parcelable { 1365 /** 1366 * If this task is currently running, this is the identifier for it. 1367 * If it is not running, this will be -1. 1368 */ 1369 public int id; 1370 1371 /** 1372 * The true identifier of this task, valid even if it is not running. 1373 */ 1374 public int persistentId; 1375 1376 /** 1377 * The original Intent used to launch the task. You can use this 1378 * Intent to re-launch the task (if it is no longer running) or bring 1379 * the current task to the front. 1380 */ 1381 public Intent baseIntent; 1382 1383 /** 1384 * If this task was started from an alias, this is the actual 1385 * activity component that was initially started; the component of 1386 * the baseIntent in this case is the name of the actual activity 1387 * implementation that the alias referred to. Otherwise, this is null. 1388 */ 1389 public ComponentName origActivity; 1390 1391 /** 1392 * The actual activity component that started the task. 1393 * @hide 1394 */ 1395 @Nullable 1396 public ComponentName realActivity; 1397 1398 /** 1399 * Description of the task's last state. 1400 */ 1401 public CharSequence description; 1402 1403 /** 1404 * The id of the ActivityStack this Task was on most recently. 1405 * @hide 1406 */ 1407 public int stackId; 1408 1409 /** 1410 * The id of the user the task was running as. 1411 * @hide 1412 */ 1413 public int userId; 1414 1415 /** 1416 * The first time this task was active. 1417 * @hide 1418 */ 1419 public long firstActiveTime; 1420 1421 /** 1422 * The last time this task was active. 1423 * @hide 1424 */ 1425 public long lastActiveTime; 1426 1427 /** 1428 * The recent activity values for the highest activity in the stack to have set the values. 1429 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1430 */ 1431 public TaskDescription taskDescription; 1432 1433 /** 1434 * Task affiliation for grouping with other tasks. 1435 */ 1436 public int affiliatedTaskId; 1437 1438 /** 1439 * Task affiliation color of the source task with the affiliated task id. 1440 * 1441 * @hide 1442 */ 1443 public int affiliatedTaskColor; 1444 1445 /** 1446 * The component launched as the first activity in the task. 1447 * This can be considered the "application" of this task. 1448 */ 1449 public ComponentName baseActivity; 1450 1451 /** 1452 * The activity component at the top of the history stack of the task. 1453 * This is what the user is currently doing. 1454 */ 1455 public ComponentName topActivity; 1456 1457 /** 1458 * Number of activities in this task. 1459 */ 1460 public int numActivities; 1461 1462 /** 1463 * The bounds of the task. 1464 * @hide 1465 */ 1466 public Rect bounds; 1467 1468 /** 1469 * True if the task can go in the docked stack. 1470 * @hide 1471 */ 1472 public boolean supportsSplitScreenMultiWindow; 1473 1474 /** 1475 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1476 * @hide 1477 */ 1478 public int resizeMode; 1479 1480 /** 1481 * The current configuration this task is in. 1482 * @hide 1483 */ 1484 final public Configuration configuration = new Configuration(); 1485 1486 public RecentTaskInfo() { 1487 } 1488 1489 @Override 1490 public int describeContents() { 1491 return 0; 1492 } 1493 1494 @Override 1495 public void writeToParcel(Parcel dest, int flags) { 1496 dest.writeInt(id); 1497 dest.writeInt(persistentId); 1498 if (baseIntent != null) { 1499 dest.writeInt(1); 1500 baseIntent.writeToParcel(dest, 0); 1501 } else { 1502 dest.writeInt(0); 1503 } 1504 ComponentName.writeToParcel(origActivity, dest); 1505 ComponentName.writeToParcel(realActivity, dest); 1506 TextUtils.writeToParcel(description, dest, 1507 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1508 if (taskDescription != null) { 1509 dest.writeInt(1); 1510 taskDescription.writeToParcel(dest, 0); 1511 } else { 1512 dest.writeInt(0); 1513 } 1514 dest.writeInt(stackId); 1515 dest.writeInt(userId); 1516 dest.writeLong(lastActiveTime); 1517 dest.writeInt(affiliatedTaskId); 1518 dest.writeInt(affiliatedTaskColor); 1519 ComponentName.writeToParcel(baseActivity, dest); 1520 ComponentName.writeToParcel(topActivity, dest); 1521 dest.writeInt(numActivities); 1522 if (bounds != null) { 1523 dest.writeInt(1); 1524 bounds.writeToParcel(dest, 0); 1525 } else { 1526 dest.writeInt(0); 1527 } 1528 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1529 dest.writeInt(resizeMode); 1530 configuration.writeToParcel(dest, flags); 1531 } 1532 1533 public void readFromParcel(Parcel source) { 1534 id = source.readInt(); 1535 persistentId = source.readInt(); 1536 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1537 origActivity = ComponentName.readFromParcel(source); 1538 realActivity = ComponentName.readFromParcel(source); 1539 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1540 taskDescription = source.readInt() > 0 ? 1541 TaskDescription.CREATOR.createFromParcel(source) : null; 1542 stackId = source.readInt(); 1543 userId = source.readInt(); 1544 lastActiveTime = source.readLong(); 1545 affiliatedTaskId = source.readInt(); 1546 affiliatedTaskColor = source.readInt(); 1547 baseActivity = ComponentName.readFromParcel(source); 1548 topActivity = ComponentName.readFromParcel(source); 1549 numActivities = source.readInt(); 1550 bounds = source.readInt() > 0 ? 1551 Rect.CREATOR.createFromParcel(source) : null; 1552 supportsSplitScreenMultiWindow = source.readInt() == 1; 1553 resizeMode = source.readInt(); 1554 configuration.readFromParcel(source); 1555 } 1556 1557 public static final Creator<RecentTaskInfo> CREATOR 1558 = new Creator<RecentTaskInfo>() { 1559 public RecentTaskInfo createFromParcel(Parcel source) { 1560 return new RecentTaskInfo(source); 1561 } 1562 public RecentTaskInfo[] newArray(int size) { 1563 return new RecentTaskInfo[size]; 1564 } 1565 }; 1566 1567 private RecentTaskInfo(Parcel source) { 1568 readFromParcel(source); 1569 } 1570 } 1571 1572 /** 1573 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1574 * that have set their 1575 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1576 */ 1577 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1578 1579 /** 1580 * Provides a list that does not contain any 1581 * recent tasks that currently are not available to the user. 1582 */ 1583 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1584 1585 /** 1586 * <p></p>Return a list of the tasks that the user has recently launched, with 1587 * the most recent being first and older ones after in order. 1588 * 1589 * <p><b>Note: this method is only intended for debugging and presenting 1590 * task management user interfaces</b>. This should never be used for 1591 * core logic in an application, such as deciding between different 1592 * behaviors based on the information found here. Such uses are 1593 * <em>not</em> supported, and will likely break in the future. For 1594 * example, if multiple applications can be actively running at the 1595 * same time, assumptions made about the meaning of the data here for 1596 * purposes of control flow will be incorrect.</p> 1597 * 1598 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1599 * no longer available to third party applications: the introduction of 1600 * document-centric recents means 1601 * it can leak personal information to the caller. For backwards compatibility, 1602 * it will still return a small subset of its data: at least the caller's 1603 * own tasks (though see {@link #getAppTasks()} for the correct supported 1604 * way to retrieve that information), and possibly some other tasks 1605 * such as home that are known to not be sensitive. 1606 * 1607 * @param maxNum The maximum number of entries to return in the list. The 1608 * actual number returned may be smaller, depending on how many tasks the 1609 * user has started and the maximum number the system can remember. 1610 * @param flags Information about what to return. May be any combination 1611 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1612 * 1613 * @return Returns a list of RecentTaskInfo records describing each of 1614 * the recent tasks. 1615 */ 1616 @Deprecated 1617 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1618 throws SecurityException { 1619 try { 1620 if (maxNum < 0) { 1621 throw new IllegalArgumentException("The requested number of tasks should be >= 0"); 1622 } 1623 return getService().getRecentTasks(maxNum, flags, UserHandle.myUserId()).getList(); 1624 } catch (RemoteException e) { 1625 throw e.rethrowFromSystemServer(); 1626 } 1627 } 1628 1629 /** 1630 * Information you can retrieve about a particular task that is currently 1631 * "running" in the system. Note that a running task does not mean the 1632 * given task actually has a process it is actively running in; it simply 1633 * means that the user has gone to it and never closed it, but currently 1634 * the system may have killed its process and is only holding on to its 1635 * last state in order to restart it when the user returns. 1636 */ 1637 public static class RunningTaskInfo implements Parcelable { 1638 /** 1639 * A unique identifier for this task. 1640 */ 1641 public int id; 1642 1643 /** 1644 * The stack that currently contains this task. 1645 * @hide 1646 */ 1647 public int stackId; 1648 1649 /** 1650 * The component launched as the first activity in the task. This can 1651 * be considered the "application" of this task. 1652 */ 1653 public ComponentName baseActivity; 1654 1655 /** 1656 * The activity component at the top of the history stack of the task. 1657 * This is what the user is currently doing. 1658 */ 1659 public ComponentName topActivity; 1660 1661 /** 1662 * Thumbnail representation of the task's current state. Currently 1663 * always null. 1664 */ 1665 public Bitmap thumbnail; 1666 1667 /** 1668 * Description of the task's current state. 1669 */ 1670 public CharSequence description; 1671 1672 /** 1673 * Number of activities in this task. 1674 */ 1675 public int numActivities; 1676 1677 /** 1678 * Number of activities that are currently running (not stopped 1679 * and persisted) in this task. 1680 */ 1681 public int numRunning; 1682 1683 /** 1684 * Last time task was run. For sorting. 1685 * @hide 1686 */ 1687 public long lastActiveTime; 1688 1689 /** 1690 * True if the task can go in the docked stack. 1691 * @hide 1692 */ 1693 public boolean supportsSplitScreenMultiWindow; 1694 1695 /** 1696 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1697 * @hide 1698 */ 1699 public int resizeMode; 1700 1701 /** 1702 * The full configuration the task is currently running in. 1703 * @hide 1704 */ 1705 final public Configuration configuration = new Configuration(); 1706 1707 public RunningTaskInfo() { 1708 } 1709 1710 public int describeContents() { 1711 return 0; 1712 } 1713 1714 public void writeToParcel(Parcel dest, int flags) { 1715 dest.writeInt(id); 1716 dest.writeInt(stackId); 1717 ComponentName.writeToParcel(baseActivity, dest); 1718 ComponentName.writeToParcel(topActivity, dest); 1719 if (thumbnail != null) { 1720 dest.writeInt(1); 1721 thumbnail.writeToParcel(dest, 0); 1722 } else { 1723 dest.writeInt(0); 1724 } 1725 TextUtils.writeToParcel(description, dest, 1726 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1727 dest.writeInt(numActivities); 1728 dest.writeInt(numRunning); 1729 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1730 dest.writeInt(resizeMode); 1731 configuration.writeToParcel(dest, flags); 1732 } 1733 1734 public void readFromParcel(Parcel source) { 1735 id = source.readInt(); 1736 stackId = source.readInt(); 1737 baseActivity = ComponentName.readFromParcel(source); 1738 topActivity = ComponentName.readFromParcel(source); 1739 if (source.readInt() != 0) { 1740 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1741 } else { 1742 thumbnail = null; 1743 } 1744 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1745 numActivities = source.readInt(); 1746 numRunning = source.readInt(); 1747 supportsSplitScreenMultiWindow = source.readInt() != 0; 1748 resizeMode = source.readInt(); 1749 configuration.readFromParcel(source); 1750 } 1751 1752 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1753 public RunningTaskInfo createFromParcel(Parcel source) { 1754 return new RunningTaskInfo(source); 1755 } 1756 public RunningTaskInfo[] newArray(int size) { 1757 return new RunningTaskInfo[size]; 1758 } 1759 }; 1760 1761 private RunningTaskInfo(Parcel source) { 1762 readFromParcel(source); 1763 } 1764 } 1765 1766 /** 1767 * Get the list of tasks associated with the calling application. 1768 * 1769 * @return The list of tasks associated with the application making this call. 1770 * @throws SecurityException 1771 */ 1772 public List<ActivityManager.AppTask> getAppTasks() { 1773 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1774 List<IBinder> appTasks; 1775 try { 1776 appTasks = getService().getAppTasks(mContext.getPackageName()); 1777 } catch (RemoteException e) { 1778 throw e.rethrowFromSystemServer(); 1779 } 1780 int numAppTasks = appTasks.size(); 1781 for (int i = 0; i < numAppTasks; i++) { 1782 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1783 } 1784 return tasks; 1785 } 1786 1787 /** 1788 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1789 * with {@link #addAppTask}. 1790 */ 1791 public Size getAppTaskThumbnailSize() { 1792 synchronized (this) { 1793 ensureAppTaskThumbnailSizeLocked(); 1794 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1795 } 1796 } 1797 1798 private void ensureAppTaskThumbnailSizeLocked() { 1799 if (mAppTaskThumbnailSize == null) { 1800 try { 1801 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1802 } catch (RemoteException e) { 1803 throw e.rethrowFromSystemServer(); 1804 } 1805 } 1806 } 1807 1808 /** 1809 * Add a new {@link AppTask} for the calling application. This will create a new 1810 * recents entry that is added to the <b>end</b> of all existing recents. 1811 * 1812 * @param activity The activity that is adding the entry. This is used to help determine 1813 * the context that the new recents entry will be in. 1814 * @param intent The Intent that describes the recents entry. This is the same Intent that 1815 * you would have used to launch the activity for it. In generally you will want to set 1816 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1817 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1818 * entry will exist without an activity, so it doesn't make sense to not retain it when 1819 * its activity disappears. The given Intent here also must have an explicit ComponentName 1820 * set on it. 1821 * @param description Optional additional description information. 1822 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1823 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1824 * recreated in your process, probably in a way you don't like, before the recents entry 1825 * is added. 1826 * 1827 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1828 * most likely cause of failure is that there is no more room for more tasks for your app. 1829 */ 1830 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1831 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1832 Point size; 1833 synchronized (this) { 1834 ensureAppTaskThumbnailSizeLocked(); 1835 size = mAppTaskThumbnailSize; 1836 } 1837 final int tw = thumbnail.getWidth(); 1838 final int th = thumbnail.getHeight(); 1839 if (tw != size.x || th != size.y) { 1840 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1841 1842 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1843 float scale; 1844 float dx = 0, dy = 0; 1845 if (tw * size.x > size.y * th) { 1846 scale = (float) size.x / (float) th; 1847 dx = (size.y - tw * scale) * 0.5f; 1848 } else { 1849 scale = (float) size.y / (float) tw; 1850 dy = (size.x - th * scale) * 0.5f; 1851 } 1852 Matrix matrix = new Matrix(); 1853 matrix.setScale(scale, scale); 1854 matrix.postTranslate((int) (dx + 0.5f), 0); 1855 1856 Canvas canvas = new Canvas(bm); 1857 canvas.drawBitmap(thumbnail, matrix, null); 1858 canvas.setBitmap(null); 1859 1860 thumbnail = bm; 1861 } 1862 if (description == null) { 1863 description = new TaskDescription(); 1864 } 1865 try { 1866 return getService().addAppTask(activity.getActivityToken(), 1867 intent, description, thumbnail); 1868 } catch (RemoteException e) { 1869 throw e.rethrowFromSystemServer(); 1870 } 1871 } 1872 1873 /** 1874 * Return a list of the tasks that are currently running, with 1875 * the most recent being first and older ones after in order. Note that 1876 * "running" does not mean any of the task's code is currently loaded or 1877 * activity -- the task may have been frozen by the system, so that it 1878 * can be restarted in its previous state when next brought to the 1879 * foreground. 1880 * 1881 * <p><b>Note: this method is only intended for debugging and presenting 1882 * task management user interfaces</b>. This should never be used for 1883 * core logic in an application, such as deciding between different 1884 * behaviors based on the information found here. Such uses are 1885 * <em>not</em> supported, and will likely break in the future. For 1886 * example, if multiple applications can be actively running at the 1887 * same time, assumptions made about the meaning of the data here for 1888 * purposes of control flow will be incorrect.</p> 1889 * 1890 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1891 * is no longer available to third party 1892 * applications: the introduction of document-centric recents means 1893 * it can leak person information to the caller. For backwards compatibility, 1894 * it will still return a small subset of its data: at least the caller's 1895 * own tasks, and possibly some other tasks 1896 * such as home that are known to not be sensitive. 1897 * 1898 * @param maxNum The maximum number of entries to return in the list. The 1899 * actual number returned may be smaller, depending on how many tasks the 1900 * user has started. 1901 * 1902 * @return Returns a list of RunningTaskInfo records describing each of 1903 * the running tasks. 1904 */ 1905 @Deprecated 1906 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1907 throws SecurityException { 1908 try { 1909 return getService().getTasks(maxNum); 1910 } catch (RemoteException e) { 1911 throw e.rethrowFromSystemServer(); 1912 } 1913 } 1914 1915 /** 1916 * Sets the windowing mode for a specific task. Only works on tasks of type 1917 * {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} 1918 * @param taskId The id of the task to set the windowing mode for. 1919 * @param windowingMode The windowing mode to set for the task. 1920 * @param toTop If the task should be moved to the top once the windowing mode changes. 1921 * @hide 1922 */ 1923 @TestApi 1924 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1925 public void setTaskWindowingMode(int taskId, int windowingMode, boolean toTop) 1926 throws SecurityException { 1927 try { 1928 getService().setTaskWindowingMode(taskId, windowingMode, toTop); 1929 } catch (RemoteException e) { 1930 throw e.rethrowFromSystemServer(); 1931 } 1932 } 1933 1934 /** 1935 * Moves the input task to the primary-split-screen stack. 1936 * @param taskId Id of task to move. 1937 * @param createMode The mode the primary split screen stack should be created in if it doesn't 1938 * exist already. See 1939 * {@link android.app.ActivityManager#SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT} 1940 * and 1941 * {@link android.app.ActivityManager 1942 * #SPLIT_SCREEN_CREATE_MODE_BOTTOM_OR_RIGHT} 1943 * @param toTop If the task and stack should be moved to the top. 1944 * @param animate Whether we should play an animation for the moving the task 1945 * @param initialBounds If the primary stack gets created, it will use these bounds for the 1946 * docked stack. Pass {@code null} to use default bounds. 1947 * @param showRecents If the recents activity should be shown on the other side of the task 1948 * going into split-screen mode. 1949 * @hide 1950 */ 1951 @TestApi 1952 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1953 public void setTaskWindowingModeSplitScreenPrimary(int taskId, int createMode, boolean toTop, 1954 boolean animate, Rect initialBounds, boolean showRecents) throws SecurityException { 1955 try { 1956 getService().setTaskWindowingModeSplitScreenPrimary(taskId, createMode, toTop, animate, 1957 initialBounds, showRecents); 1958 } catch (RemoteException e) { 1959 throw e.rethrowFromSystemServer(); 1960 } 1961 } 1962 1963 /** 1964 * Resizes the input stack id to the given bounds. 1965 * @param stackId Id of the stack to resize. 1966 * @param bounds Bounds to resize the stack to or {@code null} for fullscreen. 1967 * @hide 1968 */ 1969 @TestApi 1970 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1971 public void resizeStack(int stackId, Rect bounds) throws SecurityException { 1972 try { 1973 getService().resizeStack(stackId, bounds, false /* allowResizeInDockedMode */, 1974 false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); 1975 } catch (RemoteException e) { 1976 throw e.rethrowFromSystemServer(); 1977 } 1978 } 1979 1980 /** 1981 * Removes stacks in the windowing modes from the system if they are of activity type 1982 * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED 1983 * 1984 * @hide 1985 */ 1986 @TestApi 1987 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1988 public void removeStacksInWindowingModes(int[] windowingModes) throws SecurityException { 1989 try { 1990 getService().removeStacksInWindowingModes(windowingModes); 1991 } catch (RemoteException e) { 1992 throw e.rethrowFromSystemServer(); 1993 } 1994 } 1995 1996 /** 1997 * Removes stack of the activity types from the system. 1998 * 1999 * @hide 2000 */ 2001 @TestApi 2002 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 2003 public void removeStacksWithActivityTypes(int[] activityTypes) throws SecurityException { 2004 try { 2005 getService().removeStacksWithActivityTypes(activityTypes); 2006 } catch (RemoteException e) { 2007 throw e.rethrowFromSystemServer(); 2008 } 2009 } 2010 2011 /** 2012 * Represents a task snapshot. 2013 * @hide 2014 */ 2015 public static class TaskSnapshot implements Parcelable { 2016 2017 private final GraphicBuffer mSnapshot; 2018 private final int mOrientation; 2019 private final Rect mContentInsets; 2020 private final boolean mReducedResolution; 2021 private final float mScale; 2022 2023 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2024 boolean reducedResolution, float scale) { 2025 mSnapshot = snapshot; 2026 mOrientation = orientation; 2027 mContentInsets = new Rect(contentInsets); 2028 mReducedResolution = reducedResolution; 2029 mScale = scale; 2030 } 2031 2032 private TaskSnapshot(Parcel source) { 2033 mSnapshot = source.readParcelable(null /* classLoader */); 2034 mOrientation = source.readInt(); 2035 mContentInsets = source.readParcelable(null /* classLoader */); 2036 mReducedResolution = source.readBoolean(); 2037 mScale = source.readFloat(); 2038 } 2039 2040 /** 2041 * @return The graphic buffer representing the screenshot. 2042 */ 2043 public GraphicBuffer getSnapshot() { 2044 return mSnapshot; 2045 } 2046 2047 /** 2048 * @return The screen orientation the screenshot was taken in. 2049 */ 2050 public int getOrientation() { 2051 return mOrientation; 2052 } 2053 2054 /** 2055 * @return The system/content insets on the snapshot. These can be clipped off in order to 2056 * remove any areas behind system bars in the snapshot. 2057 */ 2058 public Rect getContentInsets() { 2059 return mContentInsets; 2060 } 2061 2062 /** 2063 * @return Whether this snapshot is a down-sampled version of the full resolution. 2064 */ 2065 public boolean isReducedResolution() { 2066 return mReducedResolution; 2067 } 2068 2069 /** 2070 * @return The scale this snapshot was taken in. 2071 */ 2072 public float getScale() { 2073 return mScale; 2074 } 2075 2076 @Override 2077 public int describeContents() { 2078 return 0; 2079 } 2080 2081 @Override 2082 public void writeToParcel(Parcel dest, int flags) { 2083 dest.writeParcelable(mSnapshot, 0); 2084 dest.writeInt(mOrientation); 2085 dest.writeParcelable(mContentInsets, 0); 2086 dest.writeBoolean(mReducedResolution); 2087 dest.writeFloat(mScale); 2088 } 2089 2090 @Override 2091 public String toString() { 2092 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2093 + " mContentInsets=" + mContentInsets.toShortString() 2094 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2095 } 2096 2097 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2098 public TaskSnapshot createFromParcel(Parcel source) { 2099 return new TaskSnapshot(source); 2100 } 2101 public TaskSnapshot[] newArray(int size) { 2102 return new TaskSnapshot[size]; 2103 } 2104 }; 2105 } 2106 2107 /** @hide */ 2108 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2109 MOVE_TASK_WITH_HOME, 2110 MOVE_TASK_NO_USER_ACTION, 2111 }) 2112 @Retention(RetentionPolicy.SOURCE) 2113 public @interface MoveTaskFlags {} 2114 2115 /** 2116 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2117 * activity along with the task, so it is positioned immediately behind 2118 * the task. 2119 */ 2120 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2121 2122 /** 2123 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2124 * user-instigated action, so the current activity will not receive a 2125 * hint that the user is leaving. 2126 */ 2127 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2128 2129 /** 2130 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2131 * with a null options argument. 2132 * 2133 * @param taskId The identifier of the task to be moved, as found in 2134 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2135 * @param flags Additional operational flags. 2136 */ 2137 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2138 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2139 moveTaskToFront(taskId, flags, null); 2140 } 2141 2142 /** 2143 * Ask that the task associated with a given task ID be moved to the 2144 * front of the stack, so it is now visible to the user. 2145 * 2146 * @param taskId The identifier of the task to be moved, as found in 2147 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2148 * @param flags Additional operational flags. 2149 * @param options Additional options for the operation, either null or 2150 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2151 * Context.startActivity(Intent, Bundle)}. 2152 */ 2153 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2154 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2155 try { 2156 getService().moveTaskToFront(taskId, flags, options); 2157 } catch (RemoteException e) { 2158 throw e.rethrowFromSystemServer(); 2159 } 2160 } 2161 2162 /** 2163 * Information you can retrieve about a particular Service that is 2164 * currently running in the system. 2165 */ 2166 public static class RunningServiceInfo implements Parcelable { 2167 /** 2168 * The service component. 2169 */ 2170 public ComponentName service; 2171 2172 /** 2173 * If non-zero, this is the process the service is running in. 2174 */ 2175 public int pid; 2176 2177 /** 2178 * The UID that owns this service. 2179 */ 2180 public int uid; 2181 2182 /** 2183 * The name of the process this service runs in. 2184 */ 2185 public String process; 2186 2187 /** 2188 * Set to true if the service has asked to run as a foreground process. 2189 */ 2190 public boolean foreground; 2191 2192 /** 2193 * The time when the service was first made active, either by someone 2194 * starting or binding to it. This 2195 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2196 */ 2197 public long activeSince; 2198 2199 /** 2200 * Set to true if this service has been explicitly started. 2201 */ 2202 public boolean started; 2203 2204 /** 2205 * Number of clients connected to the service. 2206 */ 2207 public int clientCount; 2208 2209 /** 2210 * Number of times the service's process has crashed while the service 2211 * is running. 2212 */ 2213 public int crashCount; 2214 2215 /** 2216 * The time when there was last activity in the service (either 2217 * explicit requests to start it or clients binding to it). This 2218 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2219 */ 2220 public long lastActivityTime; 2221 2222 /** 2223 * If non-zero, this service is not currently running, but scheduled to 2224 * restart at the given time. 2225 */ 2226 public long restarting; 2227 2228 /** 2229 * Bit for {@link #flags}: set if this service has been 2230 * explicitly started. 2231 */ 2232 public static final int FLAG_STARTED = 1<<0; 2233 2234 /** 2235 * Bit for {@link #flags}: set if the service has asked to 2236 * run as a foreground process. 2237 */ 2238 public static final int FLAG_FOREGROUND = 1<<1; 2239 2240 /** 2241 * Bit for {@link #flags}: set if the service is running in a 2242 * core system process. 2243 */ 2244 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2245 2246 /** 2247 * Bit for {@link #flags}: set if the service is running in a 2248 * persistent process. 2249 */ 2250 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2251 2252 /** 2253 * Running flags. 2254 */ 2255 public int flags; 2256 2257 /** 2258 * For special services that are bound to by system code, this is 2259 * the package that holds the binding. 2260 */ 2261 public String clientPackage; 2262 2263 /** 2264 * For special services that are bound to by system code, this is 2265 * a string resource providing a user-visible label for who the 2266 * client is. 2267 */ 2268 public int clientLabel; 2269 2270 public RunningServiceInfo() { 2271 } 2272 2273 public int describeContents() { 2274 return 0; 2275 } 2276 2277 public void writeToParcel(Parcel dest, int flags) { 2278 ComponentName.writeToParcel(service, dest); 2279 dest.writeInt(pid); 2280 dest.writeInt(uid); 2281 dest.writeString(process); 2282 dest.writeInt(foreground ? 1 : 0); 2283 dest.writeLong(activeSince); 2284 dest.writeInt(started ? 1 : 0); 2285 dest.writeInt(clientCount); 2286 dest.writeInt(crashCount); 2287 dest.writeLong(lastActivityTime); 2288 dest.writeLong(restarting); 2289 dest.writeInt(this.flags); 2290 dest.writeString(clientPackage); 2291 dest.writeInt(clientLabel); 2292 } 2293 2294 public void readFromParcel(Parcel source) { 2295 service = ComponentName.readFromParcel(source); 2296 pid = source.readInt(); 2297 uid = source.readInt(); 2298 process = source.readString(); 2299 foreground = source.readInt() != 0; 2300 activeSince = source.readLong(); 2301 started = source.readInt() != 0; 2302 clientCount = source.readInt(); 2303 crashCount = source.readInt(); 2304 lastActivityTime = source.readLong(); 2305 restarting = source.readLong(); 2306 flags = source.readInt(); 2307 clientPackage = source.readString(); 2308 clientLabel = source.readInt(); 2309 } 2310 2311 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2312 public RunningServiceInfo createFromParcel(Parcel source) { 2313 return new RunningServiceInfo(source); 2314 } 2315 public RunningServiceInfo[] newArray(int size) { 2316 return new RunningServiceInfo[size]; 2317 } 2318 }; 2319 2320 private RunningServiceInfo(Parcel source) { 2321 readFromParcel(source); 2322 } 2323 } 2324 2325 /** 2326 * Return a list of the services that are currently running. 2327 * 2328 * <p><b>Note: this method is only intended for debugging or implementing 2329 * service management type user interfaces.</b></p> 2330 * 2331 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2332 * is no longer available to third party applications. For backwards compatibility, 2333 * it will still return the caller's own services. 2334 * 2335 * @param maxNum The maximum number of entries to return in the list. The 2336 * actual number returned may be smaller, depending on how many services 2337 * are running. 2338 * 2339 * @return Returns a list of RunningServiceInfo records describing each of 2340 * the running tasks. 2341 */ 2342 @Deprecated 2343 public List<RunningServiceInfo> getRunningServices(int maxNum) 2344 throws SecurityException { 2345 try { 2346 return getService() 2347 .getServices(maxNum, 0); 2348 } catch (RemoteException e) { 2349 throw e.rethrowFromSystemServer(); 2350 } 2351 } 2352 2353 /** 2354 * Returns a PendingIntent you can start to show a control panel for the 2355 * given running service. If the service does not have a control panel, 2356 * null is returned. 2357 */ 2358 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2359 throws SecurityException { 2360 try { 2361 return getService() 2362 .getRunningServiceControlPanel(service); 2363 } catch (RemoteException e) { 2364 throw e.rethrowFromSystemServer(); 2365 } 2366 } 2367 2368 /** 2369 * Information you can retrieve about the available memory through 2370 * {@link ActivityManager#getMemoryInfo}. 2371 */ 2372 public static class MemoryInfo implements Parcelable { 2373 /** 2374 * The available memory on the system. This number should not 2375 * be considered absolute: due to the nature of the kernel, a significant 2376 * portion of this memory is actually in use and needed for the overall 2377 * system to run well. 2378 */ 2379 public long availMem; 2380 2381 /** 2382 * The total memory accessible by the kernel. This is basically the 2383 * RAM size of the device, not including below-kernel fixed allocations 2384 * like DMA buffers, RAM for the baseband CPU, etc. 2385 */ 2386 public long totalMem; 2387 2388 /** 2389 * The threshold of {@link #availMem} at which we consider memory to be 2390 * low and start killing background services and other non-extraneous 2391 * processes. 2392 */ 2393 public long threshold; 2394 2395 /** 2396 * Set to true if the system considers itself to currently be in a low 2397 * memory situation. 2398 */ 2399 public boolean lowMemory; 2400 2401 /** @hide */ 2402 public long hiddenAppThreshold; 2403 /** @hide */ 2404 public long secondaryServerThreshold; 2405 /** @hide */ 2406 public long visibleAppThreshold; 2407 /** @hide */ 2408 public long foregroundAppThreshold; 2409 2410 public MemoryInfo() { 2411 } 2412 2413 public int describeContents() { 2414 return 0; 2415 } 2416 2417 public void writeToParcel(Parcel dest, int flags) { 2418 dest.writeLong(availMem); 2419 dest.writeLong(totalMem); 2420 dest.writeLong(threshold); 2421 dest.writeInt(lowMemory ? 1 : 0); 2422 dest.writeLong(hiddenAppThreshold); 2423 dest.writeLong(secondaryServerThreshold); 2424 dest.writeLong(visibleAppThreshold); 2425 dest.writeLong(foregroundAppThreshold); 2426 } 2427 2428 public void readFromParcel(Parcel source) { 2429 availMem = source.readLong(); 2430 totalMem = source.readLong(); 2431 threshold = source.readLong(); 2432 lowMemory = source.readInt() != 0; 2433 hiddenAppThreshold = source.readLong(); 2434 secondaryServerThreshold = source.readLong(); 2435 visibleAppThreshold = source.readLong(); 2436 foregroundAppThreshold = source.readLong(); 2437 } 2438 2439 public static final Creator<MemoryInfo> CREATOR 2440 = new Creator<MemoryInfo>() { 2441 public MemoryInfo createFromParcel(Parcel source) { 2442 return new MemoryInfo(source); 2443 } 2444 public MemoryInfo[] newArray(int size) { 2445 return new MemoryInfo[size]; 2446 } 2447 }; 2448 2449 private MemoryInfo(Parcel source) { 2450 readFromParcel(source); 2451 } 2452 } 2453 2454 /** 2455 * Return general information about the memory state of the system. This 2456 * can be used to help decide how to manage your own memory, though note 2457 * that polling is not recommended and 2458 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2459 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2460 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2461 * level of your process as needed, which gives a better hint for how to 2462 * manage its memory. 2463 */ 2464 public void getMemoryInfo(MemoryInfo outInfo) { 2465 try { 2466 getService().getMemoryInfo(outInfo); 2467 } catch (RemoteException e) { 2468 throw e.rethrowFromSystemServer(); 2469 } 2470 } 2471 2472 /** 2473 * Information you can retrieve about an ActivityStack in the system. 2474 * @hide 2475 */ 2476 public static class StackInfo implements Parcelable { 2477 public int stackId; 2478 public Rect bounds = new Rect(); 2479 public int[] taskIds; 2480 public String[] taskNames; 2481 public Rect[] taskBounds; 2482 public int[] taskUserIds; 2483 public ComponentName topActivity; 2484 public int displayId; 2485 public int userId; 2486 public boolean visible; 2487 // Index of the stack in the display's stack list, can be used for comparison of stack order 2488 public int position; 2489 /** 2490 * The full configuration the stack is currently running in. 2491 * @hide 2492 */ 2493 final public Configuration configuration = new Configuration(); 2494 2495 @Override 2496 public int describeContents() { 2497 return 0; 2498 } 2499 2500 @Override 2501 public void writeToParcel(Parcel dest, int flags) { 2502 dest.writeInt(stackId); 2503 dest.writeInt(bounds.left); 2504 dest.writeInt(bounds.top); 2505 dest.writeInt(bounds.right); 2506 dest.writeInt(bounds.bottom); 2507 dest.writeIntArray(taskIds); 2508 dest.writeStringArray(taskNames); 2509 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2510 dest.writeInt(boundsCount); 2511 for (int i = 0; i < boundsCount; i++) { 2512 dest.writeInt(taskBounds[i].left); 2513 dest.writeInt(taskBounds[i].top); 2514 dest.writeInt(taskBounds[i].right); 2515 dest.writeInt(taskBounds[i].bottom); 2516 } 2517 dest.writeIntArray(taskUserIds); 2518 dest.writeInt(displayId); 2519 dest.writeInt(userId); 2520 dest.writeInt(visible ? 1 : 0); 2521 dest.writeInt(position); 2522 if (topActivity != null) { 2523 dest.writeInt(1); 2524 topActivity.writeToParcel(dest, 0); 2525 } else { 2526 dest.writeInt(0); 2527 } 2528 configuration.writeToParcel(dest, flags); 2529 } 2530 2531 public void readFromParcel(Parcel source) { 2532 stackId = source.readInt(); 2533 bounds = new Rect( 2534 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2535 taskIds = source.createIntArray(); 2536 taskNames = source.createStringArray(); 2537 final int boundsCount = source.readInt(); 2538 if (boundsCount > 0) { 2539 taskBounds = new Rect[boundsCount]; 2540 for (int i = 0; i < boundsCount; i++) { 2541 taskBounds[i] = new Rect(); 2542 taskBounds[i].set( 2543 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2544 } 2545 } else { 2546 taskBounds = null; 2547 } 2548 taskUserIds = source.createIntArray(); 2549 displayId = source.readInt(); 2550 userId = source.readInt(); 2551 visible = source.readInt() > 0; 2552 position = source.readInt(); 2553 if (source.readInt() > 0) { 2554 topActivity = ComponentName.readFromParcel(source); 2555 } 2556 configuration.readFromParcel(source); 2557 } 2558 2559 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2560 @Override 2561 public StackInfo createFromParcel(Parcel source) { 2562 return new StackInfo(source); 2563 } 2564 @Override 2565 public StackInfo[] newArray(int size) { 2566 return new StackInfo[size]; 2567 } 2568 }; 2569 2570 public StackInfo() { 2571 } 2572 2573 private StackInfo(Parcel source) { 2574 readFromParcel(source); 2575 } 2576 2577 public String toString(String prefix) { 2578 StringBuilder sb = new StringBuilder(256); 2579 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2580 sb.append(" bounds="); sb.append(bounds.toShortString()); 2581 sb.append(" displayId="); sb.append(displayId); 2582 sb.append(" userId="); sb.append(userId); 2583 sb.append("\n"); 2584 sb.append(" configuration="); sb.append(configuration); 2585 sb.append("\n"); 2586 prefix = prefix + " "; 2587 for (int i = 0; i < taskIds.length; ++i) { 2588 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2589 sb.append(": "); sb.append(taskNames[i]); 2590 if (taskBounds != null) { 2591 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2592 } 2593 sb.append(" userId=").append(taskUserIds[i]); 2594 sb.append(" visible=").append(visible); 2595 if (topActivity != null) { 2596 sb.append(" topActivity=").append(topActivity); 2597 } 2598 sb.append("\n"); 2599 } 2600 return sb.toString(); 2601 } 2602 2603 @Override 2604 public String toString() { 2605 return toString(""); 2606 } 2607 } 2608 2609 /** 2610 * @hide 2611 */ 2612 @RequiresPermission(anyOf={Manifest.permission.CLEAR_APP_USER_DATA, 2613 Manifest.permission.ACCESS_INSTANT_APPS}) 2614 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2615 try { 2616 return getService().clearApplicationUserData(packageName, false, 2617 observer, UserHandle.myUserId()); 2618 } catch (RemoteException e) { 2619 throw e.rethrowFromSystemServer(); 2620 } 2621 } 2622 2623 /** 2624 * Permits an application to erase its own data from disk. This is equivalent to 2625 * the user choosing to clear the app's data from within the device settings UI. It 2626 * erases all dynamic data associated with the app -- its private data and data in its 2627 * private area on external storage -- but does not remove the installed application 2628 * itself, nor any OBB files. It also revokes all runtime permissions that the app has acquired, 2629 * clears all notifications and removes all Uri grants related to this application. 2630 * 2631 * @return {@code true} if the application successfully requested that the application's 2632 * data be erased; {@code false} otherwise. 2633 */ 2634 public boolean clearApplicationUserData() { 2635 return clearApplicationUserData(mContext.getPackageName(), null); 2636 } 2637 2638 2639 /** 2640 * Permits an application to get the persistent URI permissions granted to another. 2641 * 2642 * <p>Typically called by Settings. 2643 * 2644 * @param packageName application to look for the granted permissions 2645 * @return list of granted URI permissions 2646 * 2647 * @hide 2648 */ 2649 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2650 try { 2651 return getService().getGrantedUriPermissions(packageName, 2652 UserHandle.myUserId()); 2653 } catch (RemoteException e) { 2654 throw e.rethrowFromSystemServer(); 2655 } 2656 } 2657 2658 /** 2659 * Permits an application to clear the persistent URI permissions granted to another. 2660 * 2661 * <p>Typically called by Settings. 2662 * 2663 * @param packageName application to clear its granted permissions 2664 * 2665 * @hide 2666 */ 2667 public void clearGrantedUriPermissions(String packageName) { 2668 try { 2669 getService().clearGrantedUriPermissions(packageName, 2670 UserHandle.myUserId()); 2671 } catch (RemoteException e) { 2672 throw e.rethrowFromSystemServer(); 2673 } 2674 } 2675 2676 /** 2677 * Information you can retrieve about any processes that are in an error condition. 2678 */ 2679 public static class ProcessErrorStateInfo implements Parcelable { 2680 /** 2681 * Condition codes 2682 */ 2683 public static final int NO_ERROR = 0; 2684 public static final int CRASHED = 1; 2685 public static final int NOT_RESPONDING = 2; 2686 2687 /** 2688 * The condition that the process is in. 2689 */ 2690 public int condition; 2691 2692 /** 2693 * The process name in which the crash or error occurred. 2694 */ 2695 public String processName; 2696 2697 /** 2698 * The pid of this process; 0 if none 2699 */ 2700 public int pid; 2701 2702 /** 2703 * The kernel user-ID that has been assigned to this process; 2704 * currently this is not a unique ID (multiple applications can have 2705 * the same uid). 2706 */ 2707 public int uid; 2708 2709 /** 2710 * The activity name associated with the error, if known. May be null. 2711 */ 2712 public String tag; 2713 2714 /** 2715 * A short message describing the error condition. 2716 */ 2717 public String shortMsg; 2718 2719 /** 2720 * A long message describing the error condition. 2721 */ 2722 public String longMsg; 2723 2724 /** 2725 * The stack trace where the error originated. May be null. 2726 */ 2727 public String stackTrace; 2728 2729 /** 2730 * to be deprecated: This value will always be null. 2731 */ 2732 public byte[] crashData = null; 2733 2734 public ProcessErrorStateInfo() { 2735 } 2736 2737 @Override 2738 public int describeContents() { 2739 return 0; 2740 } 2741 2742 @Override 2743 public void writeToParcel(Parcel dest, int flags) { 2744 dest.writeInt(condition); 2745 dest.writeString(processName); 2746 dest.writeInt(pid); 2747 dest.writeInt(uid); 2748 dest.writeString(tag); 2749 dest.writeString(shortMsg); 2750 dest.writeString(longMsg); 2751 dest.writeString(stackTrace); 2752 } 2753 2754 public void readFromParcel(Parcel source) { 2755 condition = source.readInt(); 2756 processName = source.readString(); 2757 pid = source.readInt(); 2758 uid = source.readInt(); 2759 tag = source.readString(); 2760 shortMsg = source.readString(); 2761 longMsg = source.readString(); 2762 stackTrace = source.readString(); 2763 } 2764 2765 public static final Creator<ProcessErrorStateInfo> CREATOR = 2766 new Creator<ProcessErrorStateInfo>() { 2767 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2768 return new ProcessErrorStateInfo(source); 2769 } 2770 public ProcessErrorStateInfo[] newArray(int size) { 2771 return new ProcessErrorStateInfo[size]; 2772 } 2773 }; 2774 2775 private ProcessErrorStateInfo(Parcel source) { 2776 readFromParcel(source); 2777 } 2778 } 2779 2780 /** 2781 * Returns a list of any processes that are currently in an error condition. The result 2782 * will be null if all processes are running properly at this time. 2783 * 2784 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2785 * current error conditions (it will not return an empty list). This list ordering is not 2786 * specified. 2787 */ 2788 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2789 try { 2790 return getService().getProcessesInErrorState(); 2791 } catch (RemoteException e) { 2792 throw e.rethrowFromSystemServer(); 2793 } 2794 } 2795 2796 /** 2797 * Information you can retrieve about a running process. 2798 */ 2799 public static class RunningAppProcessInfo implements Parcelable { 2800 /** 2801 * The name of the process that this object is associated with 2802 */ 2803 public String processName; 2804 2805 /** 2806 * The pid of this process; 0 if none 2807 */ 2808 public int pid; 2809 2810 /** 2811 * The user id of this process. 2812 */ 2813 public int uid; 2814 2815 /** 2816 * All packages that have been loaded into the process. 2817 */ 2818 public String pkgList[]; 2819 2820 /** 2821 * Constant for {@link #flags}: this is an app that is unable to 2822 * correctly save its state when going to the background, 2823 * so it can not be killed while in the background. 2824 * @hide 2825 */ 2826 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2827 2828 /** 2829 * Constant for {@link #flags}: this process is associated with a 2830 * persistent system app. 2831 * @hide 2832 */ 2833 public static final int FLAG_PERSISTENT = 1<<1; 2834 2835 /** 2836 * Constant for {@link #flags}: this process is associated with a 2837 * persistent system app. 2838 * @hide 2839 */ 2840 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2841 2842 /** 2843 * Flags of information. May be any of 2844 * {@link #FLAG_CANT_SAVE_STATE}. 2845 * @hide 2846 */ 2847 public int flags; 2848 2849 /** 2850 * Last memory trim level reported to the process: corresponds to 2851 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2852 * ComponentCallbacks2.onTrimMemory(int)}. 2853 */ 2854 public int lastTrimLevel; 2855 2856 /** @hide */ 2857 @IntDef(prefix = { "IMPORTANCE_" }, value = { 2858 IMPORTANCE_FOREGROUND, 2859 IMPORTANCE_FOREGROUND_SERVICE, 2860 IMPORTANCE_TOP_SLEEPING, 2861 IMPORTANCE_VISIBLE, 2862 IMPORTANCE_PERCEPTIBLE, 2863 IMPORTANCE_CANT_SAVE_STATE, 2864 IMPORTANCE_SERVICE, 2865 IMPORTANCE_CACHED, 2866 IMPORTANCE_GONE, 2867 }) 2868 @Retention(RetentionPolicy.SOURCE) 2869 public @interface Importance {} 2870 2871 /** 2872 * Constant for {@link #importance}: This process is running the 2873 * foreground UI; that is, it is the thing currently at the top of the screen 2874 * that the user is interacting with. 2875 */ 2876 public static final int IMPORTANCE_FOREGROUND = 100; 2877 2878 /** 2879 * Constant for {@link #importance}: This process is running a foreground 2880 * service, for example to perform music playback even while the user is 2881 * not immediately in the app. This generally indicates that the process 2882 * is doing something the user actively cares about. 2883 */ 2884 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2885 2886 /** 2887 * Constant for {@link #importance}: This process is running the foreground 2888 * UI, but the device is asleep so it is not visible to the user. This means 2889 * the user is not really aware of the process, because they can not see or 2890 * interact with it, but it is quite important because it what they expect to 2891 * return to once unlocking the device. 2892 */ 2893 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2894 2895 /** 2896 * Constant for {@link #importance}: This process is running something 2897 * that is actively visible to the user, though not in the immediate 2898 * foreground. This may be running a window that is behind the current 2899 * foreground (so paused and with its state saved, not interacting with 2900 * the user, but visible to them to some degree); it may also be running 2901 * other services under the system's control that it inconsiders important. 2902 */ 2903 public static final int IMPORTANCE_VISIBLE = 200; 2904 2905 /** 2906 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 2907 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2908 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 2909 * 2910 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 2911 * on Android versions below {@link Build.VERSION_CODES#O}. 2912 * 2913 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 2914 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2915 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2916 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 2917 */ 2918 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 2919 2920 /** 2921 * Constant for {@link #importance}: This process is not something the user 2922 * is directly aware of, but is otherwise perceptible to them to some degree. 2923 */ 2924 public static final int IMPORTANCE_PERCEPTIBLE = 230; 2925 2926 /** 2927 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 2928 * this wrong value 2929 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2930 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 2931 * 2932 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 2933 * on Android versions below {@link Build.VERSION_CODES#O}. 2934 * 2935 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 2936 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2937 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2938 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 2939 * 2940 * @hide 2941 */ 2942 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 2943 2944 /** 2945 * Constant for {@link #importance}: This process is running an 2946 * application that can not save its state, and thus can't be killed 2947 * while in the background. This will be used with apps that have 2948 * {@link android.R.attr#cantSaveState} set on their application tag. 2949 */ 2950 public static final int IMPORTANCE_CANT_SAVE_STATE = 270; 2951 2952 /** 2953 * Constant for {@link #importance}: This process is contains services 2954 * that should remain running. These are background services apps have 2955 * started, not something the user is aware of, so they may be killed by 2956 * the system relatively freely (though it is generally desired that they 2957 * stay running as long as they want to). 2958 */ 2959 public static final int IMPORTANCE_SERVICE = 300; 2960 2961 /** 2962 * Constant for {@link #importance}: This process process contains 2963 * cached code that is expendable, not actively running any app components 2964 * we care about. 2965 */ 2966 public static final int IMPORTANCE_CACHED = 400; 2967 2968 /** 2969 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 2970 */ 2971 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 2972 2973 /** 2974 * Constant for {@link #importance}: This process is empty of any 2975 * actively running code. 2976 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 2977 */ 2978 @Deprecated 2979 public static final int IMPORTANCE_EMPTY = 500; 2980 2981 /** 2982 * Constant for {@link #importance}: This process does not exist. 2983 */ 2984 public static final int IMPORTANCE_GONE = 1000; 2985 2986 /** 2987 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 2988 * will be passed to a client, use {@link #procStateToImportanceForClient}. 2989 * @hide 2990 */ 2991 public static @Importance int procStateToImportance(int procState) { 2992 if (procState == PROCESS_STATE_NONEXISTENT) { 2993 return IMPORTANCE_GONE; 2994 } else if (procState >= PROCESS_STATE_HOME) { 2995 return IMPORTANCE_CACHED; 2996 } else if (procState >= PROCESS_STATE_SERVICE) { 2997 return IMPORTANCE_SERVICE; 2998 } else if (procState == PROCESS_STATE_HEAVY_WEIGHT) { 2999 return IMPORTANCE_CANT_SAVE_STATE; 3000 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 3001 return IMPORTANCE_PERCEPTIBLE; 3002 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3003 return IMPORTANCE_VISIBLE; 3004 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3005 return IMPORTANCE_TOP_SLEEPING; 3006 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3007 return IMPORTANCE_FOREGROUND_SERVICE; 3008 } else { 3009 return IMPORTANCE_FOREGROUND; 3010 } 3011 } 3012 3013 /** 3014 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 3015 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 3016 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 3017 * client's target SDK < {@link VERSION_CODES#O}. 3018 * @hide 3019 */ 3020 public static @Importance int procStateToImportanceForClient(int procState, 3021 Context clientContext) { 3022 return procStateToImportanceForTargetSdk(procState, 3023 clientContext.getApplicationInfo().targetSdkVersion); 3024 } 3025 3026 /** 3027 * See {@link #procStateToImportanceForClient}. 3028 * @hide 3029 */ 3030 public static @Importance int procStateToImportanceForTargetSdk(int procState, 3031 int targetSdkVersion) { 3032 final int importance = procStateToImportance(procState); 3033 3034 // For pre O apps, convert to the old, wrong values. 3035 if (targetSdkVersion < VERSION_CODES.O) { 3036 switch (importance) { 3037 case IMPORTANCE_PERCEPTIBLE: 3038 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3039 case IMPORTANCE_CANT_SAVE_STATE: 3040 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3041 } 3042 } 3043 return importance; 3044 } 3045 3046 /** @hide */ 3047 public static int importanceToProcState(@Importance int importance) { 3048 if (importance == IMPORTANCE_GONE) { 3049 return PROCESS_STATE_NONEXISTENT; 3050 } else if (importance >= IMPORTANCE_CACHED) { 3051 return PROCESS_STATE_HOME; 3052 } else if (importance >= IMPORTANCE_SERVICE) { 3053 return PROCESS_STATE_SERVICE; 3054 } else if (importance == IMPORTANCE_CANT_SAVE_STATE) { 3055 return PROCESS_STATE_HEAVY_WEIGHT; 3056 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3057 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3058 } else if (importance >= IMPORTANCE_VISIBLE) { 3059 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3060 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3061 return PROCESS_STATE_TOP_SLEEPING; 3062 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3063 return PROCESS_STATE_FOREGROUND_SERVICE; 3064 } else { 3065 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3066 } 3067 } 3068 3069 /** 3070 * The relative importance level that the system places on this process. 3071 * These constants are numbered so that "more important" values are 3072 * always smaller than "less important" values. 3073 */ 3074 public @Importance int importance; 3075 3076 /** 3077 * An additional ordering within a particular {@link #importance} 3078 * category, providing finer-grained information about the relative 3079 * utility of processes within a category. This number means nothing 3080 * except that a smaller values are more recently used (and thus 3081 * more important). Currently an LRU value is only maintained for 3082 * the {@link #IMPORTANCE_CACHED} category, though others may 3083 * be maintained in the future. 3084 */ 3085 public int lru; 3086 3087 /** 3088 * Constant for {@link #importanceReasonCode}: nothing special has 3089 * been specified for the reason for this level. 3090 */ 3091 public static final int REASON_UNKNOWN = 0; 3092 3093 /** 3094 * Constant for {@link #importanceReasonCode}: one of the application's 3095 * content providers is being used by another process. The pid of 3096 * the client process is in {@link #importanceReasonPid} and the 3097 * target provider in this process is in 3098 * {@link #importanceReasonComponent}. 3099 */ 3100 public static final int REASON_PROVIDER_IN_USE = 1; 3101 3102 /** 3103 * Constant for {@link #importanceReasonCode}: one of the application's 3104 * content providers is being used by another process. The pid of 3105 * the client process is in {@link #importanceReasonPid} and the 3106 * target provider in this process is in 3107 * {@link #importanceReasonComponent}. 3108 */ 3109 public static final int REASON_SERVICE_IN_USE = 2; 3110 3111 /** 3112 * The reason for {@link #importance}, if any. 3113 */ 3114 public int importanceReasonCode; 3115 3116 /** 3117 * For the specified values of {@link #importanceReasonCode}, this 3118 * is the process ID of the other process that is a client of this 3119 * process. This will be 0 if no other process is using this one. 3120 */ 3121 public int importanceReasonPid; 3122 3123 /** 3124 * For the specified values of {@link #importanceReasonCode}, this 3125 * is the name of the component that is being used in this process. 3126 */ 3127 public ComponentName importanceReasonComponent; 3128 3129 /** 3130 * When {@link #importanceReasonPid} is non-0, this is the importance 3131 * of the other pid. @hide 3132 */ 3133 public int importanceReasonImportance; 3134 3135 /** 3136 * Current process state, as per PROCESS_STATE_* constants. 3137 * @hide 3138 */ 3139 public int processState; 3140 3141 public RunningAppProcessInfo() { 3142 importance = IMPORTANCE_FOREGROUND; 3143 importanceReasonCode = REASON_UNKNOWN; 3144 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3145 } 3146 3147 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3148 processName = pProcessName; 3149 pid = pPid; 3150 pkgList = pArr; 3151 } 3152 3153 public int describeContents() { 3154 return 0; 3155 } 3156 3157 public void writeToParcel(Parcel dest, int flags) { 3158 dest.writeString(processName); 3159 dest.writeInt(pid); 3160 dest.writeInt(uid); 3161 dest.writeStringArray(pkgList); 3162 dest.writeInt(this.flags); 3163 dest.writeInt(lastTrimLevel); 3164 dest.writeInt(importance); 3165 dest.writeInt(lru); 3166 dest.writeInt(importanceReasonCode); 3167 dest.writeInt(importanceReasonPid); 3168 ComponentName.writeToParcel(importanceReasonComponent, dest); 3169 dest.writeInt(importanceReasonImportance); 3170 dest.writeInt(processState); 3171 } 3172 3173 public void readFromParcel(Parcel source) { 3174 processName = source.readString(); 3175 pid = source.readInt(); 3176 uid = source.readInt(); 3177 pkgList = source.readStringArray(); 3178 flags = source.readInt(); 3179 lastTrimLevel = source.readInt(); 3180 importance = source.readInt(); 3181 lru = source.readInt(); 3182 importanceReasonCode = source.readInt(); 3183 importanceReasonPid = source.readInt(); 3184 importanceReasonComponent = ComponentName.readFromParcel(source); 3185 importanceReasonImportance = source.readInt(); 3186 processState = source.readInt(); 3187 } 3188 3189 public static final Creator<RunningAppProcessInfo> CREATOR = 3190 new Creator<RunningAppProcessInfo>() { 3191 public RunningAppProcessInfo createFromParcel(Parcel source) { 3192 return new RunningAppProcessInfo(source); 3193 } 3194 public RunningAppProcessInfo[] newArray(int size) { 3195 return new RunningAppProcessInfo[size]; 3196 } 3197 }; 3198 3199 private RunningAppProcessInfo(Parcel source) { 3200 readFromParcel(source); 3201 } 3202 } 3203 3204 /** 3205 * Returns a list of application processes installed on external media 3206 * that are running on the device. 3207 * 3208 * <p><b>Note: this method is only intended for debugging or building 3209 * a user-facing process management UI.</b></p> 3210 * 3211 * @return Returns a list of ApplicationInfo records, or null if none 3212 * This list ordering is not specified. 3213 * @hide 3214 */ 3215 public List<ApplicationInfo> getRunningExternalApplications() { 3216 try { 3217 return getService().getRunningExternalApplications(); 3218 } catch (RemoteException e) { 3219 throw e.rethrowFromSystemServer(); 3220 } 3221 } 3222 3223 /** 3224 * Sets the memory trim mode for a process and schedules a memory trim operation. 3225 * 3226 * <p><b>Note: this method is only intended for testing framework.</b></p> 3227 * 3228 * @return Returns true if successful. 3229 * @hide 3230 */ 3231 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3232 try { 3233 return getService().setProcessMemoryTrimLevel(process, userId, 3234 level); 3235 } catch (RemoteException e) { 3236 throw e.rethrowFromSystemServer(); 3237 } 3238 } 3239 3240 /** 3241 * Returns a list of application processes that are running on the device. 3242 * 3243 * <p><b>Note: this method is only intended for debugging or building 3244 * a user-facing process management UI.</b></p> 3245 * 3246 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3247 * running processes (it will not return an empty list). This list ordering is not 3248 * specified. 3249 */ 3250 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3251 try { 3252 return getService().getRunningAppProcesses(); 3253 } catch (RemoteException e) { 3254 throw e.rethrowFromSystemServer(); 3255 } 3256 } 3257 3258 /** 3259 * Return the importance of a given package name, based on the processes that are 3260 * currently running. The return value is one of the importance constants defined 3261 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3262 * processes that this package has code running inside of. If there are no processes 3263 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3264 * @hide 3265 */ 3266 @SystemApi @TestApi 3267 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3268 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3269 try { 3270 int procState = getService().getPackageProcessState(packageName, 3271 mContext.getOpPackageName()); 3272 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3273 } catch (RemoteException e) { 3274 throw e.rethrowFromSystemServer(); 3275 } 3276 } 3277 3278 /** 3279 * Return the importance of a given uid, based on the processes that are 3280 * currently running. The return value is one of the importance constants defined 3281 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3282 * processes that this uid has running. If there are no processes 3283 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3284 * @hide 3285 */ 3286 @SystemApi @TestApi 3287 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3288 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3289 try { 3290 int procState = getService().getUidProcessState(uid, 3291 mContext.getOpPackageName()); 3292 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3293 } catch (RemoteException e) { 3294 throw e.rethrowFromSystemServer(); 3295 } 3296 } 3297 3298 /** 3299 * Callback to get reports about changes to the importance of a uid. Use with 3300 * {@link #addOnUidImportanceListener}. 3301 * @hide 3302 */ 3303 @SystemApi @TestApi 3304 public interface OnUidImportanceListener { 3305 /** 3306 * The importance if a given uid has changed. Will be one of the importance 3307 * values in {@link RunningAppProcessInfo}; 3308 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3309 * when the uid is no longer running at all. This callback will happen on a thread 3310 * from a thread pool, not the main UI thread. 3311 * @param uid The uid whose importance has changed. 3312 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3313 */ 3314 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3315 } 3316 3317 /** 3318 * Start monitoring changes to the imoportance of uids running in the system. 3319 * @param listener The listener callback that will receive change reports. 3320 * @param importanceCutpoint The level of importance in which the caller is interested 3321 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3322 * is used here, you will receive a call each time a uids importance transitions between 3323 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3324 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3325 * 3326 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3327 * permission to use this feature.</p> 3328 * 3329 * @throws IllegalArgumentException If the listener is already registered. 3330 * @throws SecurityException If the caller does not hold 3331 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3332 * @hide 3333 */ 3334 @SystemApi @TestApi 3335 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3336 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3337 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3338 synchronized (this) { 3339 if (mImportanceListeners.containsKey(listener)) { 3340 throw new IllegalArgumentException("Listener already registered: " + listener); 3341 } 3342 // TODO: implement the cut point in the system process to avoid IPCs. 3343 UidObserver observer = new UidObserver(listener, mContext); 3344 try { 3345 getService().registerUidObserver(observer, 3346 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3347 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3348 mContext.getOpPackageName()); 3349 } catch (RemoteException e) { 3350 throw e.rethrowFromSystemServer(); 3351 } 3352 mImportanceListeners.put(listener, observer); 3353 } 3354 } 3355 3356 /** 3357 * Remove an importance listener that was previously registered with 3358 * {@link #addOnUidImportanceListener}. 3359 * 3360 * @throws IllegalArgumentException If the listener is not registered. 3361 * @hide 3362 */ 3363 @SystemApi @TestApi 3364 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3365 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3366 synchronized (this) { 3367 UidObserver observer = mImportanceListeners.remove(listener); 3368 if (observer == null) { 3369 throw new IllegalArgumentException("Listener not registered: " + listener); 3370 } 3371 try { 3372 getService().unregisterUidObserver(observer); 3373 } catch (RemoteException e) { 3374 throw e.rethrowFromSystemServer(); 3375 } 3376 } 3377 } 3378 3379 /** 3380 * Return global memory state information for the calling process. This 3381 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3382 * only fields that will be filled in are 3383 * {@link RunningAppProcessInfo#pid}, 3384 * {@link RunningAppProcessInfo#uid}, 3385 * {@link RunningAppProcessInfo#lastTrimLevel}, 3386 * {@link RunningAppProcessInfo#importance}, 3387 * {@link RunningAppProcessInfo#lru}, and 3388 * {@link RunningAppProcessInfo#importanceReasonCode}. 3389 */ 3390 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3391 try { 3392 getService().getMyMemoryState(outState); 3393 } catch (RemoteException e) { 3394 throw e.rethrowFromSystemServer(); 3395 } 3396 } 3397 3398 /** 3399 * Return information about the memory usage of one or more processes. 3400 * 3401 * <p><b>Note: this method is only intended for debugging or building 3402 * a user-facing process management UI.</b></p> 3403 * 3404 * @param pids The pids of the processes whose memory usage is to be 3405 * retrieved. 3406 * @return Returns an array of memory information, one for each 3407 * requested pid. 3408 */ 3409 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3410 try { 3411 return getService().getProcessMemoryInfo(pids); 3412 } catch (RemoteException e) { 3413 throw e.rethrowFromSystemServer(); 3414 } 3415 } 3416 3417 /** 3418 * @deprecated This is now just a wrapper for 3419 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3420 * is no longer available to applications because it allows them to 3421 * break other applications by removing their alarms, stopping their 3422 * services, etc. 3423 */ 3424 @Deprecated 3425 public void restartPackage(String packageName) { 3426 killBackgroundProcesses(packageName); 3427 } 3428 3429 /** 3430 * Have the system immediately kill all background processes associated 3431 * with the given package. This is the same as the kernel killing those 3432 * processes to reclaim memory; the system will take care of restarting 3433 * these processes in the future as needed. 3434 * 3435 * @param packageName The name of the package whose processes are to 3436 * be killed. 3437 */ 3438 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3439 public void killBackgroundProcesses(String packageName) { 3440 try { 3441 getService().killBackgroundProcesses(packageName, 3442 UserHandle.myUserId()); 3443 } catch (RemoteException e) { 3444 throw e.rethrowFromSystemServer(); 3445 } 3446 } 3447 3448 /** 3449 * Kills the specified UID. 3450 * @param uid The UID to kill. 3451 * @param reason The reason for the kill. 3452 * 3453 * @hide 3454 */ 3455 @SystemApi 3456 @RequiresPermission(Manifest.permission.KILL_UID) 3457 public void killUid(int uid, String reason) { 3458 try { 3459 getService().killUid(UserHandle.getAppId(uid), 3460 UserHandle.getUserId(uid), reason); 3461 } catch (RemoteException e) { 3462 throw e.rethrowFromSystemServer(); 3463 } 3464 } 3465 3466 /** 3467 * Have the system perform a force stop of everything associated with 3468 * the given application package. All processes that share its uid 3469 * will be killed, all services it has running stopped, all activities 3470 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3471 * broadcast will be sent, so that any of its registered alarms can 3472 * be stopped, notifications removed, etc. 3473 * 3474 * <p>You must hold the permission 3475 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3476 * call this method. 3477 * 3478 * @param packageName The name of the package to be stopped. 3479 * @param userId The user for which the running package is to be stopped. 3480 * 3481 * @hide This is not available to third party applications due to 3482 * it allowing them to break other applications by stopping their 3483 * services, removing their alarms, etc. 3484 */ 3485 public void forceStopPackageAsUser(String packageName, int userId) { 3486 try { 3487 getService().forceStopPackage(packageName, userId); 3488 } catch (RemoteException e) { 3489 throw e.rethrowFromSystemServer(); 3490 } 3491 } 3492 3493 /** 3494 * @see #forceStopPackageAsUser(String, int) 3495 * @hide 3496 */ 3497 @SystemApi 3498 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3499 public void forceStopPackage(String packageName) { 3500 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3501 } 3502 3503 /** 3504 * Get the device configuration attributes. 3505 */ 3506 public ConfigurationInfo getDeviceConfigurationInfo() { 3507 try { 3508 return getService().getDeviceConfigurationInfo(); 3509 } catch (RemoteException e) { 3510 throw e.rethrowFromSystemServer(); 3511 } 3512 } 3513 3514 /** 3515 * Get the preferred density of icons for the launcher. This is used when 3516 * custom drawables are created (e.g., for shortcuts). 3517 * 3518 * @return density in terms of DPI 3519 */ 3520 public int getLauncherLargeIconDensity() { 3521 final Resources res = mContext.getResources(); 3522 final int density = res.getDisplayMetrics().densityDpi; 3523 final int sw = res.getConfiguration().smallestScreenWidthDp; 3524 3525 if (sw < 600) { 3526 // Smaller than approx 7" tablets, use the regular icon size. 3527 return density; 3528 } 3529 3530 switch (density) { 3531 case DisplayMetrics.DENSITY_LOW: 3532 return DisplayMetrics.DENSITY_MEDIUM; 3533 case DisplayMetrics.DENSITY_MEDIUM: 3534 return DisplayMetrics.DENSITY_HIGH; 3535 case DisplayMetrics.DENSITY_TV: 3536 return DisplayMetrics.DENSITY_XHIGH; 3537 case DisplayMetrics.DENSITY_HIGH: 3538 return DisplayMetrics.DENSITY_XHIGH; 3539 case DisplayMetrics.DENSITY_XHIGH: 3540 return DisplayMetrics.DENSITY_XXHIGH; 3541 case DisplayMetrics.DENSITY_XXHIGH: 3542 return DisplayMetrics.DENSITY_XHIGH * 2; 3543 default: 3544 // The density is some abnormal value. Return some other 3545 // abnormal value that is a reasonable scaling of it. 3546 return (int)((density*1.5f)+.5f); 3547 } 3548 } 3549 3550 /** 3551 * Get the preferred launcher icon size. This is used when custom drawables 3552 * are created (e.g., for shortcuts). 3553 * 3554 * @return dimensions of square icons in terms of pixels 3555 */ 3556 public int getLauncherLargeIconSize() { 3557 return getLauncherLargeIconSizeInner(mContext); 3558 } 3559 3560 static int getLauncherLargeIconSizeInner(Context context) { 3561 final Resources res = context.getResources(); 3562 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3563 final int sw = res.getConfiguration().smallestScreenWidthDp; 3564 3565 if (sw < 600) { 3566 // Smaller than approx 7" tablets, use the regular icon size. 3567 return size; 3568 } 3569 3570 final int density = res.getDisplayMetrics().densityDpi; 3571 3572 switch (density) { 3573 case DisplayMetrics.DENSITY_LOW: 3574 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3575 case DisplayMetrics.DENSITY_MEDIUM: 3576 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3577 case DisplayMetrics.DENSITY_TV: 3578 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3579 case DisplayMetrics.DENSITY_HIGH: 3580 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3581 case DisplayMetrics.DENSITY_XHIGH: 3582 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3583 case DisplayMetrics.DENSITY_XXHIGH: 3584 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3585 default: 3586 // The density is some abnormal value. Return some other 3587 // abnormal value that is a reasonable scaling of it. 3588 return (int)((size*1.5f) + .5f); 3589 } 3590 } 3591 3592 /** 3593 * Returns "true" if the user interface is currently being messed with 3594 * by a monkey. 3595 */ 3596 public static boolean isUserAMonkey() { 3597 try { 3598 return getService().isUserAMonkey(); 3599 } catch (RemoteException e) { 3600 throw e.rethrowFromSystemServer(); 3601 } 3602 } 3603 3604 /** 3605 * Returns "true" if device is running in a test harness. 3606 */ 3607 public static boolean isRunningInTestHarness() { 3608 return SystemProperties.getBoolean("ro.test_harness", false); 3609 } 3610 3611 /** 3612 * Returns the launch count of each installed package. 3613 * 3614 * @hide 3615 */ 3616 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3617 try { 3618 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3619 ServiceManager.getService("usagestats")); 3620 if (usageStatsService == null) { 3621 return new HashMap<String, Integer>(); 3622 } 3623 3624 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3625 ActivityThread.currentPackageName()); 3626 if (allPkgUsageStats == null) { 3627 return new HashMap<String, Integer>(); 3628 } 3629 3630 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3631 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3632 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3633 } 3634 3635 return launchCounts; 3636 } catch (RemoteException e) { 3637 Log.w(TAG, "Could not query launch counts", e); 3638 return new HashMap<String, Integer>(); 3639 } 3640 }*/ 3641 3642 /** @hide */ 3643 public static int checkComponentPermission(String permission, int uid, 3644 int owningUid, boolean exported) { 3645 // Root, system server get to do everything. 3646 final int appId = UserHandle.getAppId(uid); 3647 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3648 return PackageManager.PERMISSION_GRANTED; 3649 } 3650 // Isolated processes don't get any permissions. 3651 if (UserHandle.isIsolated(uid)) { 3652 return PackageManager.PERMISSION_DENIED; 3653 } 3654 // If there is a uid that owns whatever is being accessed, it has 3655 // blanket access to it regardless of the permissions it requires. 3656 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3657 return PackageManager.PERMISSION_GRANTED; 3658 } 3659 // If the target is not exported, then nobody else can get to it. 3660 if (!exported) { 3661 /* 3662 RuntimeException here = new RuntimeException("here"); 3663 here.fillInStackTrace(); 3664 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3665 here); 3666 */ 3667 return PackageManager.PERMISSION_DENIED; 3668 } 3669 if (permission == null) { 3670 return PackageManager.PERMISSION_GRANTED; 3671 } 3672 try { 3673 return AppGlobals.getPackageManager() 3674 .checkUidPermission(permission, uid); 3675 } catch (RemoteException e) { 3676 throw e.rethrowFromSystemServer(); 3677 } 3678 } 3679 3680 /** @hide */ 3681 public static int checkUidPermission(String permission, int uid) { 3682 try { 3683 return AppGlobals.getPackageManager() 3684 .checkUidPermission(permission, uid); 3685 } catch (RemoteException e) { 3686 throw e.rethrowFromSystemServer(); 3687 } 3688 } 3689 3690 /** 3691 * @hide 3692 * Helper for dealing with incoming user arguments to system service calls. 3693 * Takes care of checking permissions and converting USER_CURRENT to the 3694 * actual current user. 3695 * 3696 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3697 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3698 * @param userId The user id argument supplied by the caller -- this is the user 3699 * they want to run as. 3700 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3701 * to get a USER_ALL returned and deal with it correctly. If false, 3702 * an exception will be thrown if USER_ALL is supplied. 3703 * @param requireFull If true, the caller must hold 3704 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3705 * different user than their current process; otherwise they must hold 3706 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3707 * @param name Optional textual name of the incoming call; only for generating error messages. 3708 * @param callerPackage Optional package name of caller; only for error messages. 3709 * 3710 * @return Returns the user ID that the call should run as. Will always be a concrete 3711 * user number, unless <var>allowAll</var> is true in which case it could also be 3712 * USER_ALL. 3713 */ 3714 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3715 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3716 if (UserHandle.getUserId(callingUid) == userId) { 3717 return userId; 3718 } 3719 try { 3720 return getService().handleIncomingUser(callingPid, 3721 callingUid, userId, allowAll, requireFull, name, callerPackage); 3722 } catch (RemoteException e) { 3723 throw e.rethrowFromSystemServer(); 3724 } 3725 } 3726 3727 /** 3728 * Gets the userId of the current foreground user. Requires system permissions. 3729 * @hide 3730 */ 3731 @SystemApi 3732 @RequiresPermission(anyOf = { 3733 "android.permission.INTERACT_ACROSS_USERS", 3734 "android.permission.INTERACT_ACROSS_USERS_FULL" 3735 }) 3736 public static int getCurrentUser() { 3737 UserInfo ui; 3738 try { 3739 ui = getService().getCurrentUser(); 3740 return ui != null ? ui.id : 0; 3741 } catch (RemoteException e) { 3742 throw e.rethrowFromSystemServer(); 3743 } 3744 } 3745 3746 /** 3747 * @param userid the user's id. Zero indicates the default user. 3748 * @hide 3749 */ 3750 public boolean switchUser(int userid) { 3751 try { 3752 return getService().switchUser(userid); 3753 } catch (RemoteException e) { 3754 throw e.rethrowFromSystemServer(); 3755 } 3756 } 3757 3758 /** 3759 * Logs out current current foreground user by switching to the system user and stopping the 3760 * user being switched from. 3761 * @hide 3762 */ 3763 public static void logoutCurrentUser() { 3764 int currentUser = ActivityManager.getCurrentUser(); 3765 if (currentUser != UserHandle.USER_SYSTEM) { 3766 try { 3767 getService().switchUser(UserHandle.USER_SYSTEM); 3768 getService().stopUser(currentUser, /* force= */ false, null); 3769 } catch (RemoteException e) { 3770 e.rethrowFromSystemServer(); 3771 } 3772 } 3773 } 3774 3775 /** {@hide} */ 3776 public static final int FLAG_OR_STOPPED = 1 << 0; 3777 /** {@hide} */ 3778 public static final int FLAG_AND_LOCKED = 1 << 1; 3779 /** {@hide} */ 3780 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3781 /** {@hide} */ 3782 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3783 3784 /** 3785 * Return whether the given user is actively running. This means that 3786 * the user is in the "started" state, not "stopped" -- it is currently 3787 * allowed to run code through scheduled alarms, receiving broadcasts, 3788 * etc. A started user may be either the current foreground user or a 3789 * background user; the result here does not distinguish between the two. 3790 * @param userId the user's id. Zero indicates the default user. 3791 * @hide 3792 */ 3793 public boolean isUserRunning(int userId) { 3794 try { 3795 return getService().isUserRunning(userId, 0); 3796 } catch (RemoteException e) { 3797 throw e.rethrowFromSystemServer(); 3798 } 3799 } 3800 3801 /** {@hide} */ 3802 public boolean isVrModePackageEnabled(ComponentName component) { 3803 try { 3804 return getService().isVrModePackageEnabled(component); 3805 } catch (RemoteException e) { 3806 throw e.rethrowFromSystemServer(); 3807 } 3808 } 3809 3810 /** 3811 * Perform a system dump of various state associated with the given application 3812 * package name. This call blocks while the dump is being performed, so should 3813 * not be done on a UI thread. The data will be written to the given file 3814 * descriptor as text. 3815 * @param fd The file descriptor that the dump should be written to. The file 3816 * descriptor is <em>not</em> closed by this function; the caller continues to 3817 * own it. 3818 * @param packageName The name of the package that is to be dumped. 3819 */ 3820 @RequiresPermission(Manifest.permission.DUMP) 3821 public void dumpPackageState(FileDescriptor fd, String packageName) { 3822 dumpPackageStateStatic(fd, packageName); 3823 } 3824 3825 /** 3826 * @hide 3827 */ 3828 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3829 FileOutputStream fout = new FileOutputStream(fd); 3830 PrintWriter pw = new FastPrintWriter(fout); 3831 dumpService(pw, fd, "package", new String[] { packageName }); 3832 pw.println(); 3833 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3834 "-a", "package", packageName }); 3835 pw.println(); 3836 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3837 pw.println(); 3838 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3839 pw.println(); 3840 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3841 pw.println(); 3842 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3843 pw.flush(); 3844 } 3845 3846 /** 3847 * @hide 3848 */ 3849 public static boolean isSystemReady() { 3850 if (!sSystemReady) { 3851 if (ActivityThread.isSystem()) { 3852 sSystemReady = 3853 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3854 } else { 3855 // Since this is being called from outside system server, system should be 3856 // ready by now. 3857 sSystemReady = true; 3858 } 3859 } 3860 return sSystemReady; 3861 } 3862 3863 /** 3864 * @hide 3865 */ 3866 public static void broadcastStickyIntent(Intent intent, int userId) { 3867 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3868 } 3869 3870 /** 3871 * Convenience for sending a sticky broadcast. For internal use only. 3872 * 3873 * @hide 3874 */ 3875 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3876 try { 3877 getService().broadcastIntent( 3878 null, intent, null, null, Activity.RESULT_OK, null, null, 3879 null /*permission*/, appOp, null, false, true, userId); 3880 } catch (RemoteException ex) { 3881 } 3882 } 3883 3884 /** 3885 * @hide 3886 */ 3887 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3888 String tag) { 3889 try { 3890 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3891 sourceUid, sourcePkg, tag); 3892 } catch (RemoteException ex) { 3893 } 3894 } 3895 3896 /** 3897 * @hide 3898 */ 3899 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3900 try { 3901 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3902 } catch (RemoteException ex) { 3903 } 3904 } 3905 3906 /** 3907 * @hide 3908 */ 3909 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3910 try { 3911 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3912 } catch (RemoteException ex) { 3913 } 3914 } 3915 3916 /** 3917 * @hide 3918 */ 3919 public static IActivityManager getService() { 3920 return IActivityManagerSingleton.get(); 3921 } 3922 3923 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3924 new Singleton<IActivityManager>() { 3925 @Override 3926 protected IActivityManager create() { 3927 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3928 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3929 return am; 3930 } 3931 }; 3932 3933 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3934 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3935 IBinder service = ServiceManager.checkService(name); 3936 if (service == null) { 3937 pw.println(" (Service not found)"); 3938 pw.flush(); 3939 return; 3940 } 3941 pw.flush(); 3942 if (service instanceof Binder) { 3943 // If this is a local object, it doesn't make sense to do an async dump with it, 3944 // just directly dump. 3945 try { 3946 service.dump(fd, args); 3947 } catch (Throwable e) { 3948 pw.println("Failure dumping service:"); 3949 e.printStackTrace(pw); 3950 pw.flush(); 3951 } 3952 } else { 3953 // Otherwise, it is remote, do the dump asynchronously to avoid blocking. 3954 TransferPipe tp = null; 3955 try { 3956 pw.flush(); 3957 tp = new TransferPipe(); 3958 tp.setBufferPrefix(" "); 3959 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3960 tp.go(fd, 10000); 3961 } catch (Throwable e) { 3962 if (tp != null) { 3963 tp.kill(); 3964 } 3965 pw.println("Failure dumping service:"); 3966 e.printStackTrace(pw); 3967 } 3968 } 3969 } 3970 3971 /** 3972 * Request that the system start watching for the calling process to exceed a pss 3973 * size as given here. Once called, the system will look for any occasions where it 3974 * sees the associated process with a larger pss size and, when this happens, automatically 3975 * pull a heap dump from it and allow the user to share the data. Note that this request 3976 * continues running even if the process is killed and restarted. To remove the watch, 3977 * use {@link #clearWatchHeapLimit()}. 3978 * 3979 * <p>This API only work if the calling process has been marked as 3980 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3981 * (userdebug or eng) build.</p> 3982 * 3983 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3984 * handle heap limit reports themselves.</p> 3985 * 3986 * @param pssSize The size in bytes to set the limit at. 3987 */ 3988 public void setWatchHeapLimit(long pssSize) { 3989 try { 3990 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3991 mContext.getPackageName()); 3992 } catch (RemoteException e) { 3993 throw e.rethrowFromSystemServer(); 3994 } 3995 } 3996 3997 /** 3998 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3999 * If your package has an activity handling this action, it will be launched with the 4000 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4001 * match the activty must support this action and a MIME type of "*/*". 4002 */ 4003 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4004 4005 /** 4006 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4007 */ 4008 public void clearWatchHeapLimit() { 4009 try { 4010 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4011 } catch (RemoteException e) { 4012 throw e.rethrowFromSystemServer(); 4013 } 4014 } 4015 4016 /** 4017 * Return whether currently in lock task mode. When in this mode 4018 * no new tasks can be created or switched to. 4019 * 4020 * @see Activity#startLockTask() 4021 * 4022 * @deprecated Use {@link #getLockTaskModeState} instead. 4023 */ 4024 @Deprecated 4025 public boolean isInLockTaskMode() { 4026 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4027 } 4028 4029 /** 4030 * Return the current state of task locking. The three possible outcomes 4031 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4032 * and {@link #LOCK_TASK_MODE_PINNED}. 4033 * 4034 * @see Activity#startLockTask() 4035 */ 4036 public int getLockTaskModeState() { 4037 try { 4038 return getService().getLockTaskModeState(); 4039 } catch (RemoteException e) { 4040 throw e.rethrowFromSystemServer(); 4041 } 4042 } 4043 4044 /** 4045 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4046 * thread can be a VR thread in a process at a time, and that thread may be subject to 4047 * restrictions on the amount of time it can run. 4048 * 4049 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4050 * method will return to normal operation, and calling this method will do nothing while 4051 * persistent VR mode is enabled. 4052 * 4053 * To reset the VR thread for an application, a tid of 0 can be passed. 4054 * 4055 * @see android.os.Process#myTid() 4056 * @param tid tid of the VR thread 4057 */ 4058 public static void setVrThread(int tid) { 4059 try { 4060 getService().setVrThread(tid); 4061 } catch (RemoteException e) { 4062 // pass 4063 } 4064 } 4065 4066 /** 4067 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4068 * beyond a single process. Only one thread can be a 4069 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4070 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4071 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4072 * persistent VR thread loses its new scheduling priority; this method must be called again to 4073 * set the persistent thread. 4074 * 4075 * To reset the persistent VR thread, a tid of 0 can be passed. 4076 * 4077 * @see android.os.Process#myTid() 4078 * @param tid tid of the VR thread 4079 * @hide 4080 */ 4081 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4082 public static void setPersistentVrThread(int tid) { 4083 try { 4084 getService().setPersistentVrThread(tid); 4085 } catch (RemoteException e) { 4086 // pass 4087 } 4088 } 4089 4090 /** 4091 * The AppTask allows you to manage your own application's tasks. 4092 * See {@link android.app.ActivityManager#getAppTasks()} 4093 */ 4094 public static class AppTask { 4095 private IAppTask mAppTaskImpl; 4096 4097 /** @hide */ 4098 public AppTask(IAppTask task) { 4099 mAppTaskImpl = task; 4100 } 4101 4102 /** 4103 * Finishes all activities in this task and removes it from the recent tasks list. 4104 */ 4105 public void finishAndRemoveTask() { 4106 try { 4107 mAppTaskImpl.finishAndRemoveTask(); 4108 } catch (RemoteException e) { 4109 throw e.rethrowFromSystemServer(); 4110 } 4111 } 4112 4113 /** 4114 * Get the RecentTaskInfo associated with this task. 4115 * 4116 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4117 */ 4118 public RecentTaskInfo getTaskInfo() { 4119 try { 4120 return mAppTaskImpl.getTaskInfo(); 4121 } catch (RemoteException e) { 4122 throw e.rethrowFromSystemServer(); 4123 } 4124 } 4125 4126 /** 4127 * Bring this task to the foreground. If it contains activities, they will be 4128 * brought to the foreground with it and their instances re-created if needed. 4129 * If it doesn't contain activities, the root activity of the task will be 4130 * re-launched. 4131 */ 4132 public void moveToFront() { 4133 try { 4134 mAppTaskImpl.moveToFront(); 4135 } catch (RemoteException e) { 4136 throw e.rethrowFromSystemServer(); 4137 } 4138 } 4139 4140 /** 4141 * Start an activity in this task. Brings the task to the foreground. If this task 4142 * is not currently active (that is, its id < 0), then a new activity for the given 4143 * Intent will be launched as the root of the task and the task brought to the 4144 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4145 * an activity to launch in a new task, then a new activity for the given Intent will 4146 * be launched on top of the task and the task brought to the foreground. If this 4147 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4148 * or would otherwise be launched in to a new task, then the activity not launched but 4149 * this task be brought to the foreground and a new intent delivered to the top 4150 * activity if appropriate. 4151 * 4152 * <p>In other words, you generally want to use an Intent here that does not specify 4153 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4154 * and let the system do the right thing.</p> 4155 * 4156 * @param intent The Intent describing the new activity to be launched on the task. 4157 * @param options Optional launch options. 4158 * 4159 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4160 */ 4161 public void startActivity(Context context, Intent intent, Bundle options) { 4162 ActivityThread thread = ActivityThread.currentActivityThread(); 4163 thread.getInstrumentation().execStartActivityFromAppTask(context, 4164 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4165 } 4166 4167 /** 4168 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4169 * Intent of this AppTask. 4170 * 4171 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4172 * be set; otherwise, it will be cleared. 4173 */ 4174 public void setExcludeFromRecents(boolean exclude) { 4175 try { 4176 mAppTaskImpl.setExcludeFromRecents(exclude); 4177 } catch (RemoteException e) { 4178 throw e.rethrowFromSystemServer(); 4179 } 4180 } 4181 } 4182} 4183