ActivityManager.java revision f59a4132e8d65ab253f3f4cdd1e69f3f99526ba8
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.DrawableRes; 21import android.annotation.IntDef; 22import android.annotation.NonNull; 23import android.annotation.Nullable; 24import android.annotation.RequiresPermission; 25import android.annotation.SystemApi; 26import android.annotation.SystemService; 27import android.annotation.TestApi; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.UriPermission; 32import android.content.pm.ActivityInfo; 33import android.content.pm.ApplicationInfo; 34import android.content.pm.ConfigurationInfo; 35import android.content.pm.IPackageDataObserver; 36import android.content.pm.PackageManager; 37import android.content.pm.ParceledListSlice; 38import android.content.pm.UserInfo; 39import android.content.res.Configuration; 40import android.content.res.Resources; 41import android.graphics.Bitmap; 42import android.graphics.Canvas; 43import android.graphics.Color; 44import android.graphics.GraphicBuffer; 45import android.graphics.Matrix; 46import android.graphics.Point; 47import android.graphics.Rect; 48import android.os.BatteryStats; 49import android.os.Binder; 50import android.os.Build; 51import android.os.Build.VERSION_CODES; 52import android.os.Bundle; 53import android.os.Debug; 54import android.os.Handler; 55import android.os.IBinder; 56import android.os.Parcel; 57import android.os.Parcelable; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.ServiceManager; 61import android.os.SystemProperties; 62import android.os.UserHandle; 63import android.text.TextUtils; 64import android.util.ArrayMap; 65import android.util.DisplayMetrics; 66import android.util.Singleton; 67import android.util.Size; 68 69import com.android.internal.app.procstats.ProcessStats; 70import com.android.internal.os.RoSystemProperties; 71import com.android.internal.os.TransferPipe; 72import com.android.internal.util.FastPrintWriter; 73import com.android.server.LocalServices; 74 75import org.xmlpull.v1.XmlSerializer; 76 77import java.io.FileDescriptor; 78import java.io.FileOutputStream; 79import java.io.IOException; 80import java.io.PrintWriter; 81import java.lang.annotation.Retention; 82import java.lang.annotation.RetentionPolicy; 83import java.util.ArrayList; 84import java.util.List; 85 86/** 87 * <p> 88 * This class gives information about, and interacts 89 * with, activities, services, and the containing 90 * process. 91 * </p> 92 * 93 * <p> 94 * A number of the methods in this class are for 95 * debugging or informational purposes and they should 96 * not be used to affect any runtime behavior of 97 * your app. These methods are called out as such in 98 * the method level documentation. 99 * </p> 100 * 101 *<p> 102 * Most application developers should not have the need to 103 * use this class, most of whose methods are for specialized 104 * use cases. However, a few methods are more broadly applicable. 105 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 106 * enables your app to detect whether it is running on a low-memory device, 107 * and behave accordingly. 108 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 109 * is for apps with reset-data functionality. 110 * </p> 111 * 112 * <p> 113 * In some special use cases, where an app interacts with 114 * its Task stack, the app may use the 115 * {@link android.app.ActivityManager.AppTask} and 116 * {@link android.app.ActivityManager.RecentTaskInfo} inner 117 * classes. However, in general, the methods in this class should 118 * be used for testing and debugging purposes only. 119 * </p> 120 */ 121@SystemService(Context.ACTIVITY_SERVICE) 122public class ActivityManager { 123 private static String TAG = "ActivityManager"; 124 125 private static int gMaxRecentTasks = -1; 126 127 private final Context mContext; 128 129 private static volatile boolean sSystemReady = false; 130 131 132 private static final int FIRST_START_FATAL_ERROR_CODE = -100; 133 private static final int LAST_START_FATAL_ERROR_CODE = -1; 134 private static final int FIRST_START_SUCCESS_CODE = 0; 135 private static final int LAST_START_SUCCESS_CODE = 99; 136 private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; 137 private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; 138 139 static final class UidObserver extends IUidObserver.Stub { 140 final OnUidImportanceListener mListener; 141 final Context mContext; 142 143 UidObserver(OnUidImportanceListener listener, Context clientContext) { 144 mListener = listener; 145 mContext = clientContext; 146 } 147 148 @Override 149 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 150 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 151 procState, mContext)); 152 } 153 154 @Override 155 public void onUidGone(int uid, boolean disabled) { 156 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 157 } 158 159 @Override 160 public void onUidActive(int uid) { 161 } 162 163 @Override 164 public void onUidIdle(int uid, boolean disabled) { 165 } 166 167 @Override public void onUidCachedChanged(int uid, boolean cached) { 168 } 169 } 170 171 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 172 173 /** 174 * Defines acceptable types of bugreports. 175 * @hide 176 */ 177 @Retention(RetentionPolicy.SOURCE) 178 @IntDef({ 179 BUGREPORT_OPTION_FULL, 180 BUGREPORT_OPTION_INTERACTIVE, 181 BUGREPORT_OPTION_REMOTE, 182 BUGREPORT_OPTION_WEAR, 183 BUGREPORT_OPTION_TELEPHONY 184 }) 185 public @interface BugreportMode {} 186 /** 187 * Takes a bugreport without user interference (and hence causing less 188 * interference to the system), but includes all sections. 189 * @hide 190 */ 191 public static final int BUGREPORT_OPTION_FULL = 0; 192 /** 193 * Allows user to monitor progress and enter additional data; might not include all 194 * sections. 195 * @hide 196 */ 197 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 198 /** 199 * Takes a bugreport requested remotely by administrator of the Device Owner app, 200 * not the device's user. 201 * @hide 202 */ 203 public static final int BUGREPORT_OPTION_REMOTE = 2; 204 /** 205 * Takes a bugreport on a wearable device. 206 * @hide 207 */ 208 public static final int BUGREPORT_OPTION_WEAR = 3; 209 210 /** 211 * Takes a lightweight version of bugreport that only includes a few, urgent sections 212 * used to report telephony bugs. 213 * @hide 214 */ 215 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 216 217 /** 218 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 219 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 220 * uninstalled in lieu of the declaring one. The package named here must be 221 * signed with the same certificate as the one declaring the {@code <meta-data>}. 222 */ 223 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 224 225 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 226 // result is properly categorized. 227 228 /** 229 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 230 * @hide 231 */ 232 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 233 234 /** 235 * Result for IActivityManager.startVoiceActivity: active session does not match 236 * the requesting token. 237 * @hide 238 */ 239 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 240 241 /** 242 * Result for IActivityManager.startActivity: trying to start a background user 243 * activity that shouldn't be displayed for all users. 244 * @hide 245 */ 246 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 247 248 /** 249 * Result for IActivityManager.startActivity: trying to start an activity under voice 250 * control when that activity does not support the VOICE category. 251 * @hide 252 */ 253 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 254 255 /** 256 * Result for IActivityManager.startActivity: an error where the 257 * start had to be canceled. 258 * @hide 259 */ 260 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 261 262 /** 263 * Result for IActivityManager.startActivity: an error where the 264 * thing being started is not an activity. 265 * @hide 266 */ 267 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 268 269 /** 270 * Result for IActivityManager.startActivity: an error where the 271 * caller does not have permission to start the activity. 272 * @hide 273 */ 274 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 275 276 /** 277 * Result for IActivityManager.startActivity: an error where the 278 * caller has requested both to forward a result and to receive 279 * a result. 280 * @hide 281 */ 282 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 283 284 /** 285 * Result for IActivityManager.startActivity: an error where the 286 * requested class is not found. 287 * @hide 288 */ 289 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 290 291 /** 292 * Result for IActivityManager.startActivity: an error where the 293 * given Intent could not be resolved to an activity. 294 * @hide 295 */ 296 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 297 298 /** 299 * Result for IActivityManager.startAssistantActivity: active session is currently hidden. 300 * @hide 301 */ 302 public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; 303 304 /** 305 * Result for IActivityManager.startAssistantActivity: active session does not match 306 * the requesting token. 307 * @hide 308 */ 309 public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; 310 311 /** 312 * Result for IActivityManaqer.startActivity: the activity was started 313 * successfully as normal. 314 * @hide 315 */ 316 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 317 318 /** 319 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 320 * be executed if it is the recipient, and that is indeed the case. 321 * @hide 322 */ 323 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 324 325 /** 326 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 327 * a task was simply brought to the foreground. 328 * @hide 329 */ 330 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 331 332 /** 333 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 334 * the given Intent was given to the existing top activity. 335 * @hide 336 */ 337 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 338 339 /** 340 * Result for IActivityManaqer.startActivity: request was canceled because 341 * app switches are temporarily canceled to ensure the user's last request 342 * (such as pressing home) is performed. 343 * @hide 344 */ 345 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 346 347 /** 348 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 349 * while in Lock Task Mode. 350 * @hide 351 */ 352 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 353 FIRST_START_NON_FATAL_ERROR_CODE + 1; 354 355 /** 356 * Result for IActivityManaqer.startActivity: a new activity start was aborted. Never returned 357 * externally. 358 * @hide 359 */ 360 public static final int START_ABORTED = FIRST_START_NON_FATAL_ERROR_CODE + 2; 361 362 /** 363 * Flag for IActivityManaqer.startActivity: do special start mode where 364 * a new activity is launched only if it is needed. 365 * @hide 366 */ 367 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 368 369 /** 370 * Flag for IActivityManaqer.startActivity: launch the app for 371 * debugging. 372 * @hide 373 */ 374 public static final int START_FLAG_DEBUG = 1<<1; 375 376 /** 377 * Flag for IActivityManaqer.startActivity: launch the app for 378 * allocation tracking. 379 * @hide 380 */ 381 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 382 383 /** 384 * Flag for IActivityManaqer.startActivity: launch the app with 385 * native debugging support. 386 * @hide 387 */ 388 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 389 390 /** 391 * Result for IActivityManaqer.broadcastIntent: success! 392 * @hide 393 */ 394 public static final int BROADCAST_SUCCESS = 0; 395 396 /** 397 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 398 * a sticky intent without appropriate permission. 399 * @hide 400 */ 401 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 402 403 /** 404 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 405 * to a stopped user. Fail. 406 * @hide 407 */ 408 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 409 410 /** 411 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 412 * for a sendBroadcast operation. 413 * @hide 414 */ 415 public static final int INTENT_SENDER_BROADCAST = 1; 416 417 /** 418 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 419 * for a startActivity operation. 420 * @hide 421 */ 422 public static final int INTENT_SENDER_ACTIVITY = 2; 423 424 /** 425 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 426 * for an activity result operation. 427 * @hide 428 */ 429 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 430 431 /** 432 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 433 * for a startService operation. 434 * @hide 435 */ 436 public static final int INTENT_SENDER_SERVICE = 4; 437 438 /** 439 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 440 * for a startForegroundService operation. 441 * @hide 442 */ 443 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 444 445 /** @hide User operation call: success! */ 446 public static final int USER_OP_SUCCESS = 0; 447 448 /** @hide User operation call: given user id is not known. */ 449 public static final int USER_OP_UNKNOWN_USER = -1; 450 451 /** @hide User operation call: given user id is the current user, can't be stopped. */ 452 public static final int USER_OP_IS_CURRENT = -2; 453 454 /** @hide User operation call: system user can't be stopped. */ 455 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 456 457 /** @hide User operation call: one of related users cannot be stopped. */ 458 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 459 460 /** @hide Not a real process state. */ 461 public static final int PROCESS_STATE_UNKNOWN = -1; 462 463 /** @hide Process is a persistent system process. */ 464 public static final int PROCESS_STATE_PERSISTENT = 0; 465 466 /** @hide Process is a persistent system process and is doing UI. */ 467 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 468 469 /** @hide Process is hosting the current top activities. Note that this covers 470 * all activities that are visible to the user. */ 471 public static final int PROCESS_STATE_TOP = 2; 472 473 /** @hide Process is hosting a foreground service due to a system binding. */ 474 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 475 476 /** @hide Process is hosting a foreground service. */ 477 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 478 479 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 480 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 481 482 /** @hide Process is important to the user, and something they are aware of. */ 483 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 484 485 /** @hide Process is important to the user, but not something they are aware of. */ 486 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 487 488 /** @hide Process is in the background transient so we will try to keep running. */ 489 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 490 491 /** @hide Process is in the background running a backup/restore operation. */ 492 public static final int PROCESS_STATE_BACKUP = 9; 493 494 /** @hide Process is in the background, but it can't restore its state so we want 495 * to try to avoid killing it. */ 496 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 497 498 /** @hide Process is in the background running a service. Unlike oom_adj, this level 499 * is used for both the normal running in background state and the executing 500 * operations state. */ 501 public static final int PROCESS_STATE_SERVICE = 11; 502 503 /** @hide Process is in the background running a receiver. Note that from the 504 * perspective of oom_adj, receivers run at a higher foreground level, but for our 505 * prioritization here that is not necessary and putting them below services means 506 * many fewer changes in some process states as they receive broadcasts. */ 507 public static final int PROCESS_STATE_RECEIVER = 12; 508 509 /** @hide Process is in the background but hosts the home activity. */ 510 public static final int PROCESS_STATE_HOME = 13; 511 512 /** @hide Process is in the background but hosts the last shown activity. */ 513 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 514 515 /** @hide Process is being cached for later use and contains activities. */ 516 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 517 518 /** @hide Process is being cached for later use and is a client of another cached 519 * process that contains activities. */ 520 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 521 522 /** @hide Process is being cached for later use and is empty. */ 523 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 524 525 /** @hide Process does not exist. */ 526 public static final int PROCESS_STATE_NONEXISTENT = 18; 527 528 // NOTE: If PROCESS_STATEs are added or changed, then new fields must be added 529 // to frameworks/base/core/proto/android/app/activitymanager.proto and the following method must 530 // be updated to correctly map between them. 531 /** 532 * Maps ActivityManager.PROCESS_STATE_ values to ActivityManagerProto.ProcessState enum. 533 * 534 * @param amInt a process state of the form ActivityManager.PROCESS_STATE_ 535 * @return the value of the corresponding android.app.ActivityManagerProto's ProcessState enum. 536 * @hide 537 */ 538 public static final int processStateAmToProto(int amInt) { 539 return amInt * 100; 540 } 541 542 /** @hide The lowest process state number */ 543 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 544 545 /** @hide The highest process state number */ 546 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 547 548 /** @hide Should this process state be considered a background state? */ 549 public static final boolean isProcStateBackground(int procState) { 550 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 551 } 552 553 /** @hide requestType for assist context: only basic information. */ 554 public static final int ASSIST_CONTEXT_BASIC = 0; 555 556 /** @hide requestType for assist context: generate full AssistStructure. */ 557 public static final int ASSIST_CONTEXT_FULL = 1; 558 559 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 560 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 561 562 /** @hide Flag for registerUidObserver: report changes in process state. */ 563 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 564 565 /** @hide Flag for registerUidObserver: report uid gone. */ 566 public static final int UID_OBSERVER_GONE = 1<<1; 567 568 /** @hide Flag for registerUidObserver: report uid has become idle. */ 569 public static final int UID_OBSERVER_IDLE = 1<<2; 570 571 /** @hide Flag for registerUidObserver: report uid has become active. */ 572 public static final int UID_OBSERVER_ACTIVE = 1<<3; 573 574 /** @hide Flag for registerUidObserver: report uid cached state has changed. */ 575 public static final int UID_OBSERVER_CACHED = 1<<4; 576 577 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 578 public static final int APP_START_MODE_NORMAL = 0; 579 580 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 581 public static final int APP_START_MODE_DELAYED = 1; 582 583 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 584 * rigid errors (throwing exception). */ 585 public static final int APP_START_MODE_DELAYED_RIGID = 2; 586 587 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 588 * launches; this is the mode for ephemeral apps. */ 589 public static final int APP_START_MODE_DISABLED = 3; 590 591 /** 592 * Lock task mode is not active. 593 */ 594 public static final int LOCK_TASK_MODE_NONE = 0; 595 596 /** 597 * Full lock task mode is active. 598 */ 599 public static final int LOCK_TASK_MODE_LOCKED = 1; 600 601 /** 602 * App pinning mode is active. 603 */ 604 public static final int LOCK_TASK_MODE_PINNED = 2; 605 606 Point mAppTaskThumbnailSize; 607 608 /*package*/ ActivityManager(Context context, Handler handler) { 609 mContext = context; 610 } 611 612 /** 613 * Returns whether the launch was successful. 614 * @hide 615 */ 616 public static final boolean isStartResultSuccessful(int result) { 617 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 618 } 619 620 /** 621 * Returns whether the launch result was a fatal error. 622 * @hide 623 */ 624 public static final boolean isStartResultFatalError(int result) { 625 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 626 } 627 628 /** 629 * Screen compatibility mode: the application most always run in 630 * compatibility mode. 631 * @hide 632 */ 633 public static final int COMPAT_MODE_ALWAYS = -1; 634 635 /** 636 * Screen compatibility mode: the application can never run in 637 * compatibility mode. 638 * @hide 639 */ 640 public static final int COMPAT_MODE_NEVER = -2; 641 642 /** 643 * Screen compatibility mode: unknown. 644 * @hide 645 */ 646 public static final int COMPAT_MODE_UNKNOWN = -3; 647 648 /** 649 * Screen compatibility mode: the application currently has compatibility 650 * mode disabled. 651 * @hide 652 */ 653 public static final int COMPAT_MODE_DISABLED = 0; 654 655 /** 656 * Screen compatibility mode: the application currently has compatibility 657 * mode enabled. 658 * @hide 659 */ 660 public static final int COMPAT_MODE_ENABLED = 1; 661 662 /** 663 * Screen compatibility mode: request to toggle the application's 664 * compatibility mode. 665 * @hide 666 */ 667 public static final int COMPAT_MODE_TOGGLE = 2; 668 669 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 670 SystemProperties.getBoolean("debug.force_low_ram", false); 671 672 /** @hide */ 673 @TestApi 674 public static class StackId { 675 676 private StackId() { 677 } 678 679 /** Invalid stack ID. */ 680 public static final int INVALID_STACK_ID = -1; 681 682 } 683 684 /** 685 * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} 686 * which specifies the position of the created docked stack at the top half of the screen if 687 * in portrait mode or at the left half of the screen if in landscape mode. 688 * @hide 689 */ 690 @TestApi 691 public static final int SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT = 0; 692 693 /** 694 * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} 695 * which 696 * specifies the position of the created docked stack at the bottom half of the screen if 697 * in portrait mode or at the right half of the screen if in landscape mode. 698 * @hide 699 */ 700 @TestApi 701 public static final int SPLIT_SCREEN_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 702 703 /** 704 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 705 * that the resize doesn't need to preserve the window, and can be skipped if bounds 706 * is unchanged. This mode is used by window manager in most cases. 707 * @hide 708 */ 709 public static final int RESIZE_MODE_SYSTEM = 0; 710 711 /** 712 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 713 * that the resize should preserve the window if possible. 714 * @hide 715 */ 716 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 717 718 /** 719 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 720 * that the resize should be performed even if the bounds appears unchanged. 721 * @hide 722 */ 723 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 724 725 /** 726 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 727 * manager during a screen rotation. 728 * @hide 729 */ 730 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 731 732 /** 733 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 734 * resize is due to a drag action. 735 * @hide 736 */ 737 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 738 739 /** 740 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 741 * that the resize should preserve the window if possible, and should not be skipped 742 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 743 * is ending. 744 * @hide 745 */ 746 public static final int RESIZE_MODE_USER_FORCED = 747 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 748 749 /** @hide */ 750 public int getFrontActivityScreenCompatMode() { 751 try { 752 return getService().getFrontActivityScreenCompatMode(); 753 } catch (RemoteException e) { 754 throw e.rethrowFromSystemServer(); 755 } 756 } 757 758 /** @hide */ 759 public void setFrontActivityScreenCompatMode(int mode) { 760 try { 761 getService().setFrontActivityScreenCompatMode(mode); 762 } catch (RemoteException e) { 763 throw e.rethrowFromSystemServer(); 764 } 765 } 766 767 /** @hide */ 768 public int getPackageScreenCompatMode(String packageName) { 769 try { 770 return getService().getPackageScreenCompatMode(packageName); 771 } catch (RemoteException e) { 772 throw e.rethrowFromSystemServer(); 773 } 774 } 775 776 /** @hide */ 777 public void setPackageScreenCompatMode(String packageName, int mode) { 778 try { 779 getService().setPackageScreenCompatMode(packageName, mode); 780 } catch (RemoteException e) { 781 throw e.rethrowFromSystemServer(); 782 } 783 } 784 785 /** @hide */ 786 public boolean getPackageAskScreenCompat(String packageName) { 787 try { 788 return getService().getPackageAskScreenCompat(packageName); 789 } catch (RemoteException e) { 790 throw e.rethrowFromSystemServer(); 791 } 792 } 793 794 /** @hide */ 795 public void setPackageAskScreenCompat(String packageName, boolean ask) { 796 try { 797 getService().setPackageAskScreenCompat(packageName, ask); 798 } catch (RemoteException e) { 799 throw e.rethrowFromSystemServer(); 800 } 801 } 802 803 /** 804 * Return the approximate per-application memory class of the current 805 * device. This gives you an idea of how hard a memory limit you should 806 * impose on your application to let the overall system work best. The 807 * returned value is in megabytes; the baseline Android memory class is 808 * 16 (which happens to be the Java heap limit of those devices); some 809 * device with more memory may return 24 or even higher numbers. 810 */ 811 public int getMemoryClass() { 812 return staticGetMemoryClass(); 813 } 814 815 /** @hide */ 816 static public int staticGetMemoryClass() { 817 // Really brain dead right now -- just take this from the configured 818 // vm heap size, and assume it is in megabytes and thus ends with "m". 819 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 820 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 821 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 822 } 823 return staticGetLargeMemoryClass(); 824 } 825 826 /** 827 * Return the approximate per-application memory class of the current 828 * device when an application is running with a large heap. This is the 829 * space available for memory-intensive applications; most applications 830 * should not need this amount of memory, and should instead stay with the 831 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 832 * This may be the same size as {@link #getMemoryClass()} on memory 833 * constrained devices, or it may be significantly larger on devices with 834 * a large amount of available RAM. 835 * 836 * <p>The is the size of the application's Dalvik heap if it has 837 * specified <code>android:largeHeap="true"</code> in its manifest. 838 */ 839 public int getLargeMemoryClass() { 840 return staticGetLargeMemoryClass(); 841 } 842 843 /** @hide */ 844 static public int staticGetLargeMemoryClass() { 845 // Really brain dead right now -- just take this from the configured 846 // vm heap size, and assume it is in megabytes and thus ends with "m". 847 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 848 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 849 } 850 851 /** 852 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 853 * is ultimately up to the device configuration, but currently it generally means 854 * something with 1GB or less of RAM. This is mostly intended to be used by apps 855 * to determine whether they should turn off certain features that require more RAM. 856 */ 857 public boolean isLowRamDevice() { 858 return isLowRamDeviceStatic(); 859 } 860 861 /** @hide */ 862 public static boolean isLowRamDeviceStatic() { 863 return RoSystemProperties.CONFIG_LOW_RAM || 864 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 865 } 866 867 /** 868 * Returns true if this is a small battery device. Exactly whether a device is considered to be 869 * small battery is ultimately up to the device configuration, but currently it generally means 870 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 871 * to determine whether certain features should be altered to account for a drastically smaller 872 * battery. 873 * @hide 874 */ 875 public static boolean isSmallBatteryDevice() { 876 return RoSystemProperties.CONFIG_SMALL_BATTERY; 877 } 878 879 /** 880 * Used by persistent processes to determine if they are running on a 881 * higher-end device so should be okay using hardware drawing acceleration 882 * (which tends to consume a lot more RAM). 883 * @hide 884 */ 885 static public boolean isHighEndGfx() { 886 return !isLowRamDeviceStatic() && 887 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 888 } 889 890 /** 891 * Return the maximum number of recents entries that we will maintain and show. 892 * @hide 893 */ 894 static public int getMaxRecentTasksStatic() { 895 if (gMaxRecentTasks < 0) { 896 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 897 } 898 return gMaxRecentTasks; 899 } 900 901 /** 902 * Return the default limit on the number of recents that an app can make. 903 * @hide 904 */ 905 static public int getDefaultAppRecentsLimitStatic() { 906 return getMaxRecentTasksStatic() / 6; 907 } 908 909 /** 910 * Return the maximum limit on the number of recents that an app can make. 911 * @hide 912 */ 913 static public int getMaxAppRecentsLimitStatic() { 914 return getMaxRecentTasksStatic() / 2; 915 } 916 917 /** 918 * Returns true if the system supports at least one form of multi-window. 919 * E.g. freeform, split-screen, picture-in-picture. 920 * @hide 921 */ 922 @TestApi 923 static public boolean supportsMultiWindow(Context context) { 924 // On watches, multi-window is used to present essential system UI, and thus it must be 925 // supported regardless of device memory characteristics. 926 boolean isWatch = context.getPackageManager().hasSystemFeature( 927 PackageManager.FEATURE_WATCH); 928 return (!isLowRamDeviceStatic() || isWatch) 929 && Resources.getSystem().getBoolean( 930 com.android.internal.R.bool.config_supportsMultiWindow); 931 } 932 933 /** 934 * Returns true if the system supports split screen multi-window. 935 * @hide 936 */ 937 @TestApi 938 static public boolean supportsSplitScreenMultiWindow(Context context) { 939 return supportsMultiWindow(context) 940 && Resources.getSystem().getBoolean( 941 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 942 } 943 944 /** @removed */ 945 @Deprecated 946 public static int getMaxNumPictureInPictureActions() { 947 return 3; 948 } 949 950 /** 951 * Information you can set and retrieve about the current activity within the recent task list. 952 */ 953 public static class TaskDescription implements Parcelable { 954 /** @hide */ 955 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 956 private static final String ATTR_TASKDESCRIPTIONLABEL = 957 ATTR_TASKDESCRIPTION_PREFIX + "label"; 958 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 959 ATTR_TASKDESCRIPTION_PREFIX + "color"; 960 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 961 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 962 private static final String ATTR_TASKDESCRIPTIONICON_FILENAME = 963 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 964 private static final String ATTR_TASKDESCRIPTIONICON_RESOURCE = 965 ATTR_TASKDESCRIPTION_PREFIX + "icon_resource"; 966 967 private String mLabel; 968 private Bitmap mIcon; 969 private int mIconRes; 970 private String mIconFilename; 971 private int mColorPrimary; 972 private int mColorBackground; 973 private int mStatusBarColor; 974 private int mNavigationBarColor; 975 976 /** 977 * Creates the TaskDescription to the specified values. 978 * 979 * @param label A label and description of the current state of this task. 980 * @param icon An icon that represents the current state of this task. 981 * @param colorPrimary A color to override the theme's primary color. This color must be 982 * opaque. 983 * @deprecated use TaskDescription constructor with icon resource instead 984 */ 985 @Deprecated 986 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 987 this(label, icon, 0, null, colorPrimary, 0, 0, 0); 988 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 989 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 990 } 991 } 992 993 /** 994 * Creates the TaskDescription to the specified values. 995 * 996 * @param label A label and description of the current state of this task. 997 * @param iconRes A drawable resource of an icon that represents the current state of this 998 * activity. 999 * @param colorPrimary A color to override the theme's primary color. This color must be 1000 * opaque. 1001 */ 1002 public TaskDescription(String label, @DrawableRes int iconRes, int colorPrimary) { 1003 this(label, null, iconRes, null, colorPrimary, 0, 0, 0); 1004 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1005 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1006 } 1007 } 1008 1009 /** 1010 * Creates the TaskDescription to the specified values. 1011 * 1012 * @param label A label and description of the current state of this activity. 1013 * @param icon An icon that represents the current state of this activity. 1014 * @deprecated use TaskDescription constructor with icon resource instead 1015 */ 1016 @Deprecated 1017 public TaskDescription(String label, Bitmap icon) { 1018 this(label, icon, 0, null, 0, 0, 0, 0); 1019 } 1020 1021 /** 1022 * Creates the TaskDescription to the specified values. 1023 * 1024 * @param label A label and description of the current state of this activity. 1025 * @param iconRes A drawable resource of an icon that represents the current state of this 1026 * activity. 1027 */ 1028 public TaskDescription(String label, @DrawableRes int iconRes) { 1029 this(label, null, iconRes, null, 0, 0, 0, 0); 1030 } 1031 1032 /** 1033 * Creates the TaskDescription to the specified values. 1034 * 1035 * @param label A label and description of the current state of this activity. 1036 */ 1037 public TaskDescription(String label) { 1038 this(label, null, 0, null, 0, 0, 0, 0); 1039 } 1040 1041 /** 1042 * Creates an empty TaskDescription. 1043 */ 1044 public TaskDescription() { 1045 this(null, null, 0, null, 0, 0, 0, 0); 1046 } 1047 1048 /** @hide */ 1049 public TaskDescription(String label, Bitmap bitmap, int iconRes, String iconFilename, 1050 int colorPrimary, int colorBackground, int statusBarColor, int navigationBarColor) { 1051 mLabel = label; 1052 mIcon = bitmap; 1053 mIconRes = iconRes; 1054 mIconFilename = iconFilename; 1055 mColorPrimary = colorPrimary; 1056 mColorBackground = colorBackground; 1057 mStatusBarColor = statusBarColor; 1058 mNavigationBarColor = navigationBarColor; 1059 } 1060 1061 /** 1062 * Creates a copy of another TaskDescription. 1063 */ 1064 public TaskDescription(TaskDescription td) { 1065 copyFrom(td); 1066 } 1067 1068 /** 1069 * Copies this the values from another TaskDescription. 1070 * @hide 1071 */ 1072 public void copyFrom(TaskDescription other) { 1073 mLabel = other.mLabel; 1074 mIcon = other.mIcon; 1075 mIconRes = other.mIconRes; 1076 mIconFilename = other.mIconFilename; 1077 mColorPrimary = other.mColorPrimary; 1078 mColorBackground = other.mColorBackground; 1079 mStatusBarColor = other.mStatusBarColor; 1080 mNavigationBarColor = other.mNavigationBarColor; 1081 } 1082 1083 /** 1084 * Copies this the values from another TaskDescription, but preserves the hidden fields 1085 * if they weren't set on {@code other} 1086 * @hide 1087 */ 1088 public void copyFromPreserveHiddenFields(TaskDescription other) { 1089 mLabel = other.mLabel; 1090 mIcon = other.mIcon; 1091 mIconRes = other.mIconRes; 1092 mIconFilename = other.mIconFilename; 1093 mColorPrimary = other.mColorPrimary; 1094 if (other.mColorBackground != 0) { 1095 mColorBackground = other.mColorBackground; 1096 } 1097 if (other.mStatusBarColor != 0) { 1098 mStatusBarColor = other.mStatusBarColor; 1099 } 1100 if (other.mNavigationBarColor != 0) { 1101 mNavigationBarColor = other.mNavigationBarColor; 1102 } 1103 } 1104 1105 private TaskDescription(Parcel source) { 1106 readFromParcel(source); 1107 } 1108 1109 /** 1110 * Sets the label for this task description. 1111 * @hide 1112 */ 1113 public void setLabel(String label) { 1114 mLabel = label; 1115 } 1116 1117 /** 1118 * Sets the primary color for this task description. 1119 * @hide 1120 */ 1121 public void setPrimaryColor(int primaryColor) { 1122 // Ensure that the given color is valid 1123 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1124 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1125 } 1126 mColorPrimary = primaryColor; 1127 } 1128 1129 /** 1130 * Sets the background color for this task description. 1131 * @hide 1132 */ 1133 public void setBackgroundColor(int backgroundColor) { 1134 // Ensure that the given color is valid 1135 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1136 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1137 } 1138 mColorBackground = backgroundColor; 1139 } 1140 1141 /** 1142 * @hide 1143 */ 1144 public void setStatusBarColor(int statusBarColor) { 1145 mStatusBarColor = statusBarColor; 1146 } 1147 1148 /** 1149 * @hide 1150 */ 1151 public void setNavigationBarColor(int navigationBarColor) { 1152 mNavigationBarColor = navigationBarColor; 1153 } 1154 1155 /** 1156 * Sets the icon for this task description. 1157 * @hide 1158 */ 1159 public void setIcon(Bitmap icon) { 1160 mIcon = icon; 1161 } 1162 1163 /** 1164 * Sets the icon resource for this task description. 1165 * @hide 1166 */ 1167 public void setIcon(int iconRes) { 1168 mIconRes = iconRes; 1169 } 1170 1171 /** 1172 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1173 * bitmap. 1174 * @hide 1175 */ 1176 public void setIconFilename(String iconFilename) { 1177 mIconFilename = iconFilename; 1178 mIcon = null; 1179 } 1180 1181 /** 1182 * @return The label and description of the current state of this task. 1183 */ 1184 public String getLabel() { 1185 return mLabel; 1186 } 1187 1188 /** 1189 * @return The icon that represents the current state of this task. 1190 */ 1191 public Bitmap getIcon() { 1192 if (mIcon != null) { 1193 return mIcon; 1194 } 1195 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1196 } 1197 1198 /** @hide */ 1199 @TestApi 1200 public int getIconResource() { 1201 return mIconRes; 1202 } 1203 1204 /** @hide */ 1205 @TestApi 1206 public String getIconFilename() { 1207 return mIconFilename; 1208 } 1209 1210 /** @hide */ 1211 public Bitmap getInMemoryIcon() { 1212 return mIcon; 1213 } 1214 1215 /** @hide */ 1216 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1217 if (iconFilename != null) { 1218 try { 1219 return getService().getTaskDescriptionIcon(iconFilename, 1220 userId); 1221 } catch (RemoteException e) { 1222 throw e.rethrowFromSystemServer(); 1223 } 1224 } 1225 return null; 1226 } 1227 1228 /** 1229 * @return The color override on the theme's primary color. 1230 */ 1231 public int getPrimaryColor() { 1232 return mColorPrimary; 1233 } 1234 1235 /** 1236 * @return The background color. 1237 * @hide 1238 */ 1239 public int getBackgroundColor() { 1240 return mColorBackground; 1241 } 1242 1243 /** 1244 * @hide 1245 */ 1246 public int getStatusBarColor() { 1247 return mStatusBarColor; 1248 } 1249 1250 /** 1251 * @hide 1252 */ 1253 public int getNavigationBarColor() { 1254 return mNavigationBarColor; 1255 } 1256 1257 /** @hide */ 1258 public void saveToXml(XmlSerializer out) throws IOException { 1259 if (mLabel != null) { 1260 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1261 } 1262 if (mColorPrimary != 0) { 1263 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1264 Integer.toHexString(mColorPrimary)); 1265 } 1266 if (mColorBackground != 0) { 1267 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1268 Integer.toHexString(mColorBackground)); 1269 } 1270 if (mIconFilename != null) { 1271 out.attribute(null, ATTR_TASKDESCRIPTIONICON_FILENAME, mIconFilename); 1272 } 1273 if (mIconRes != 0) { 1274 out.attribute(null, ATTR_TASKDESCRIPTIONICON_RESOURCE, Integer.toString(mIconRes)); 1275 } 1276 } 1277 1278 /** @hide */ 1279 public void restoreFromXml(String attrName, String attrValue) { 1280 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1281 setLabel(attrValue); 1282 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1283 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1284 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1285 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1286 } else if (ATTR_TASKDESCRIPTIONICON_FILENAME.equals(attrName)) { 1287 setIconFilename(attrValue); 1288 } else if (ATTR_TASKDESCRIPTIONICON_RESOURCE.equals(attrName)) { 1289 setIcon(Integer.parseInt(attrValue, 10)); 1290 } 1291 } 1292 1293 @Override 1294 public int describeContents() { 1295 return 0; 1296 } 1297 1298 @Override 1299 public void writeToParcel(Parcel dest, int flags) { 1300 if (mLabel == null) { 1301 dest.writeInt(0); 1302 } else { 1303 dest.writeInt(1); 1304 dest.writeString(mLabel); 1305 } 1306 if (mIcon == null) { 1307 dest.writeInt(0); 1308 } else { 1309 dest.writeInt(1); 1310 mIcon.writeToParcel(dest, 0); 1311 } 1312 dest.writeInt(mIconRes); 1313 dest.writeInt(mColorPrimary); 1314 dest.writeInt(mColorBackground); 1315 dest.writeInt(mStatusBarColor); 1316 dest.writeInt(mNavigationBarColor); 1317 if (mIconFilename == null) { 1318 dest.writeInt(0); 1319 } else { 1320 dest.writeInt(1); 1321 dest.writeString(mIconFilename); 1322 } 1323 } 1324 1325 public void readFromParcel(Parcel source) { 1326 mLabel = source.readInt() > 0 ? source.readString() : null; 1327 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1328 mIconRes = source.readInt(); 1329 mColorPrimary = source.readInt(); 1330 mColorBackground = source.readInt(); 1331 mStatusBarColor = source.readInt(); 1332 mNavigationBarColor = source.readInt(); 1333 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1334 } 1335 1336 public static final Creator<TaskDescription> CREATOR 1337 = new Creator<TaskDescription>() { 1338 public TaskDescription createFromParcel(Parcel source) { 1339 return new TaskDescription(source); 1340 } 1341 public TaskDescription[] newArray(int size) { 1342 return new TaskDescription[size]; 1343 } 1344 }; 1345 1346 @Override 1347 public String toString() { 1348 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1349 " IconRes: " + mIconRes + " IconFilename: " + mIconFilename + 1350 " colorPrimary: " + mColorPrimary + " colorBackground: " + mColorBackground + 1351 " statusBarColor: " + mColorBackground + 1352 " navigationBarColor: " + mNavigationBarColor; 1353 } 1354 } 1355 1356 /** 1357 * Information you can retrieve about tasks that the user has most recently 1358 * started or visited. 1359 */ 1360 public static class RecentTaskInfo implements Parcelable { 1361 /** 1362 * If this task is currently running, this is the identifier for it. 1363 * If it is not running, this will be -1. 1364 */ 1365 public int id; 1366 1367 /** 1368 * The true identifier of this task, valid even if it is not running. 1369 */ 1370 public int persistentId; 1371 1372 /** 1373 * The original Intent used to launch the task. You can use this 1374 * Intent to re-launch the task (if it is no longer running) or bring 1375 * the current task to the front. 1376 */ 1377 public Intent baseIntent; 1378 1379 /** 1380 * If this task was started from an alias, this is the actual 1381 * activity component that was initially started; the component of 1382 * the baseIntent in this case is the name of the actual activity 1383 * implementation that the alias referred to. Otherwise, this is null. 1384 */ 1385 public ComponentName origActivity; 1386 1387 /** 1388 * The actual activity component that started the task. 1389 * @hide 1390 */ 1391 @Nullable 1392 public ComponentName realActivity; 1393 1394 /** 1395 * Description of the task's last state. 1396 */ 1397 public CharSequence description; 1398 1399 /** 1400 * The id of the ActivityStack this Task was on most recently. 1401 * @hide 1402 */ 1403 public int stackId; 1404 1405 /** 1406 * The id of the user the task was running as. 1407 * @hide 1408 */ 1409 public int userId; 1410 1411 /** 1412 * The first time this task was active. 1413 * @hide 1414 */ 1415 public long firstActiveTime; 1416 1417 /** 1418 * The last time this task was active. 1419 * @hide 1420 */ 1421 public long lastActiveTime; 1422 1423 /** 1424 * The recent activity values for the highest activity in the stack to have set the values. 1425 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1426 */ 1427 public TaskDescription taskDescription; 1428 1429 /** 1430 * Task affiliation for grouping with other tasks. 1431 */ 1432 public int affiliatedTaskId; 1433 1434 /** 1435 * Task affiliation color of the source task with the affiliated task id. 1436 * 1437 * @hide 1438 */ 1439 public int affiliatedTaskColor; 1440 1441 /** 1442 * The component launched as the first activity in the task. 1443 * This can be considered the "application" of this task. 1444 */ 1445 public ComponentName baseActivity; 1446 1447 /** 1448 * The activity component at the top of the history stack of the task. 1449 * This is what the user is currently doing. 1450 */ 1451 public ComponentName topActivity; 1452 1453 /** 1454 * Number of activities in this task. 1455 */ 1456 public int numActivities; 1457 1458 /** 1459 * The bounds of the task. 1460 * @hide 1461 */ 1462 public Rect bounds; 1463 1464 /** 1465 * True if the task can go in the docked stack. 1466 * @hide 1467 */ 1468 public boolean supportsSplitScreenMultiWindow; 1469 1470 /** 1471 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1472 * @hide 1473 */ 1474 public int resizeMode; 1475 1476 /** 1477 * The current configuration this task is in. 1478 * @hide 1479 */ 1480 final public Configuration configuration = new Configuration(); 1481 1482 public RecentTaskInfo() { 1483 } 1484 1485 @Override 1486 public int describeContents() { 1487 return 0; 1488 } 1489 1490 @Override 1491 public void writeToParcel(Parcel dest, int flags) { 1492 dest.writeInt(id); 1493 dest.writeInt(persistentId); 1494 if (baseIntent != null) { 1495 dest.writeInt(1); 1496 baseIntent.writeToParcel(dest, 0); 1497 } else { 1498 dest.writeInt(0); 1499 } 1500 ComponentName.writeToParcel(origActivity, dest); 1501 ComponentName.writeToParcel(realActivity, dest); 1502 TextUtils.writeToParcel(description, dest, 1503 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1504 if (taskDescription != null) { 1505 dest.writeInt(1); 1506 taskDescription.writeToParcel(dest, 0); 1507 } else { 1508 dest.writeInt(0); 1509 } 1510 dest.writeInt(stackId); 1511 dest.writeInt(userId); 1512 dest.writeLong(lastActiveTime); 1513 dest.writeInt(affiliatedTaskId); 1514 dest.writeInt(affiliatedTaskColor); 1515 ComponentName.writeToParcel(baseActivity, dest); 1516 ComponentName.writeToParcel(topActivity, dest); 1517 dest.writeInt(numActivities); 1518 if (bounds != null) { 1519 dest.writeInt(1); 1520 bounds.writeToParcel(dest, 0); 1521 } else { 1522 dest.writeInt(0); 1523 } 1524 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1525 dest.writeInt(resizeMode); 1526 configuration.writeToParcel(dest, flags); 1527 } 1528 1529 public void readFromParcel(Parcel source) { 1530 id = source.readInt(); 1531 persistentId = source.readInt(); 1532 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1533 origActivity = ComponentName.readFromParcel(source); 1534 realActivity = ComponentName.readFromParcel(source); 1535 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1536 taskDescription = source.readInt() > 0 ? 1537 TaskDescription.CREATOR.createFromParcel(source) : null; 1538 stackId = source.readInt(); 1539 userId = source.readInt(); 1540 lastActiveTime = source.readLong(); 1541 affiliatedTaskId = source.readInt(); 1542 affiliatedTaskColor = source.readInt(); 1543 baseActivity = ComponentName.readFromParcel(source); 1544 topActivity = ComponentName.readFromParcel(source); 1545 numActivities = source.readInt(); 1546 bounds = source.readInt() > 0 ? 1547 Rect.CREATOR.createFromParcel(source) : null; 1548 supportsSplitScreenMultiWindow = source.readInt() == 1; 1549 resizeMode = source.readInt(); 1550 configuration.readFromParcel(source); 1551 } 1552 1553 public static final Creator<RecentTaskInfo> CREATOR 1554 = new Creator<RecentTaskInfo>() { 1555 public RecentTaskInfo createFromParcel(Parcel source) { 1556 return new RecentTaskInfo(source); 1557 } 1558 public RecentTaskInfo[] newArray(int size) { 1559 return new RecentTaskInfo[size]; 1560 } 1561 }; 1562 1563 private RecentTaskInfo(Parcel source) { 1564 readFromParcel(source); 1565 } 1566 } 1567 1568 /** 1569 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1570 * that have set their 1571 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1572 */ 1573 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1574 1575 /** 1576 * Provides a list that does not contain any 1577 * recent tasks that currently are not available to the user. 1578 */ 1579 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1580 1581 /** 1582 * <p></p>Return a list of the tasks that the user has recently launched, with 1583 * the most recent being first and older ones after in order. 1584 * 1585 * <p><b>Note: this method is only intended for debugging and presenting 1586 * task management user interfaces</b>. This should never be used for 1587 * core logic in an application, such as deciding between different 1588 * behaviors based on the information found here. Such uses are 1589 * <em>not</em> supported, and will likely break in the future. For 1590 * example, if multiple applications can be actively running at the 1591 * same time, assumptions made about the meaning of the data here for 1592 * purposes of control flow will be incorrect.</p> 1593 * 1594 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1595 * no longer available to third party applications: the introduction of 1596 * document-centric recents means 1597 * it can leak personal information to the caller. For backwards compatibility, 1598 * it will still return a small subset of its data: at least the caller's 1599 * own tasks (though see {@link #getAppTasks()} for the correct supported 1600 * way to retrieve that information), and possibly some other tasks 1601 * such as home that are known to not be sensitive. 1602 * 1603 * @param maxNum The maximum number of entries to return in the list. The 1604 * actual number returned may be smaller, depending on how many tasks the 1605 * user has started and the maximum number the system can remember. 1606 * @param flags Information about what to return. May be any combination 1607 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1608 * 1609 * @return Returns a list of RecentTaskInfo records describing each of 1610 * the recent tasks. 1611 */ 1612 @Deprecated 1613 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1614 throws SecurityException { 1615 try { 1616 if (maxNum < 0) { 1617 throw new IllegalArgumentException("The requested number of tasks should be >= 0"); 1618 } 1619 return getService().getRecentTasks(maxNum, flags, UserHandle.myUserId()).getList(); 1620 } catch (RemoteException e) { 1621 throw e.rethrowFromSystemServer(); 1622 } 1623 } 1624 1625 /** 1626 * Information you can retrieve about a particular task that is currently 1627 * "running" in the system. Note that a running task does not mean the 1628 * given task actually has a process it is actively running in; it simply 1629 * means that the user has gone to it and never closed it, but currently 1630 * the system may have killed its process and is only holding on to its 1631 * last state in order to restart it when the user returns. 1632 */ 1633 public static class RunningTaskInfo implements Parcelable { 1634 /** 1635 * A unique identifier for this task. 1636 */ 1637 public int id; 1638 1639 /** 1640 * The stack that currently contains this task. 1641 * @hide 1642 */ 1643 public int stackId; 1644 1645 /** 1646 * The component launched as the first activity in the task. This can 1647 * be considered the "application" of this task. 1648 */ 1649 public ComponentName baseActivity; 1650 1651 /** 1652 * The activity component at the top of the history stack of the task. 1653 * This is what the user is currently doing. 1654 */ 1655 public ComponentName topActivity; 1656 1657 /** 1658 * Thumbnail representation of the task's current state. Currently 1659 * always null. 1660 */ 1661 public Bitmap thumbnail; 1662 1663 /** 1664 * Description of the task's current state. 1665 */ 1666 public CharSequence description; 1667 1668 /** 1669 * Number of activities in this task. 1670 */ 1671 public int numActivities; 1672 1673 /** 1674 * Number of activities that are currently running (not stopped 1675 * and persisted) in this task. 1676 */ 1677 public int numRunning; 1678 1679 /** 1680 * Last time task was run. For sorting. 1681 * @hide 1682 */ 1683 public long lastActiveTime; 1684 1685 /** 1686 * True if the task can go in the docked stack. 1687 * @hide 1688 */ 1689 public boolean supportsSplitScreenMultiWindow; 1690 1691 /** 1692 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1693 * @hide 1694 */ 1695 public int resizeMode; 1696 1697 /** 1698 * The full configuration the task is currently running in. 1699 * @hide 1700 */ 1701 final public Configuration configuration = new Configuration(); 1702 1703 public RunningTaskInfo() { 1704 } 1705 1706 public int describeContents() { 1707 return 0; 1708 } 1709 1710 public void writeToParcel(Parcel dest, int flags) { 1711 dest.writeInt(id); 1712 dest.writeInt(stackId); 1713 ComponentName.writeToParcel(baseActivity, dest); 1714 ComponentName.writeToParcel(topActivity, dest); 1715 if (thumbnail != null) { 1716 dest.writeInt(1); 1717 thumbnail.writeToParcel(dest, 0); 1718 } else { 1719 dest.writeInt(0); 1720 } 1721 TextUtils.writeToParcel(description, dest, 1722 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1723 dest.writeInt(numActivities); 1724 dest.writeInt(numRunning); 1725 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1726 dest.writeInt(resizeMode); 1727 configuration.writeToParcel(dest, flags); 1728 } 1729 1730 public void readFromParcel(Parcel source) { 1731 id = source.readInt(); 1732 stackId = source.readInt(); 1733 baseActivity = ComponentName.readFromParcel(source); 1734 topActivity = ComponentName.readFromParcel(source); 1735 if (source.readInt() != 0) { 1736 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1737 } else { 1738 thumbnail = null; 1739 } 1740 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1741 numActivities = source.readInt(); 1742 numRunning = source.readInt(); 1743 supportsSplitScreenMultiWindow = source.readInt() != 0; 1744 resizeMode = source.readInt(); 1745 configuration.readFromParcel(source); 1746 } 1747 1748 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1749 public RunningTaskInfo createFromParcel(Parcel source) { 1750 return new RunningTaskInfo(source); 1751 } 1752 public RunningTaskInfo[] newArray(int size) { 1753 return new RunningTaskInfo[size]; 1754 } 1755 }; 1756 1757 private RunningTaskInfo(Parcel source) { 1758 readFromParcel(source); 1759 } 1760 } 1761 1762 /** 1763 * Get the list of tasks associated with the calling application. 1764 * 1765 * @return The list of tasks associated with the application making this call. 1766 * @throws SecurityException 1767 */ 1768 public List<ActivityManager.AppTask> getAppTasks() { 1769 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1770 List<IBinder> appTasks; 1771 try { 1772 appTasks = getService().getAppTasks(mContext.getPackageName()); 1773 } catch (RemoteException e) { 1774 throw e.rethrowFromSystemServer(); 1775 } 1776 int numAppTasks = appTasks.size(); 1777 for (int i = 0; i < numAppTasks; i++) { 1778 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1779 } 1780 return tasks; 1781 } 1782 1783 /** 1784 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1785 * with {@link #addAppTask}. 1786 */ 1787 public Size getAppTaskThumbnailSize() { 1788 synchronized (this) { 1789 ensureAppTaskThumbnailSizeLocked(); 1790 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1791 } 1792 } 1793 1794 private void ensureAppTaskThumbnailSizeLocked() { 1795 if (mAppTaskThumbnailSize == null) { 1796 try { 1797 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1798 } catch (RemoteException e) { 1799 throw e.rethrowFromSystemServer(); 1800 } 1801 } 1802 } 1803 1804 /** 1805 * Add a new {@link AppTask} for the calling application. This will create a new 1806 * recents entry that is added to the <b>end</b> of all existing recents. 1807 * 1808 * @param activity The activity that is adding the entry. This is used to help determine 1809 * the context that the new recents entry will be in. 1810 * @param intent The Intent that describes the recents entry. This is the same Intent that 1811 * you would have used to launch the activity for it. In generally you will want to set 1812 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1813 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1814 * entry will exist without an activity, so it doesn't make sense to not retain it when 1815 * its activity disappears. The given Intent here also must have an explicit ComponentName 1816 * set on it. 1817 * @param description Optional additional description information. 1818 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1819 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1820 * recreated in your process, probably in a way you don't like, before the recents entry 1821 * is added. 1822 * 1823 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1824 * most likely cause of failure is that there is no more room for more tasks for your app. 1825 */ 1826 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1827 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1828 Point size; 1829 synchronized (this) { 1830 ensureAppTaskThumbnailSizeLocked(); 1831 size = mAppTaskThumbnailSize; 1832 } 1833 final int tw = thumbnail.getWidth(); 1834 final int th = thumbnail.getHeight(); 1835 if (tw != size.x || th != size.y) { 1836 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1837 1838 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1839 float scale; 1840 float dx = 0, dy = 0; 1841 if (tw * size.x > size.y * th) { 1842 scale = (float) size.x / (float) th; 1843 dx = (size.y - tw * scale) * 0.5f; 1844 } else { 1845 scale = (float) size.y / (float) tw; 1846 dy = (size.x - th * scale) * 0.5f; 1847 } 1848 Matrix matrix = new Matrix(); 1849 matrix.setScale(scale, scale); 1850 matrix.postTranslate((int) (dx + 0.5f), 0); 1851 1852 Canvas canvas = new Canvas(bm); 1853 canvas.drawBitmap(thumbnail, matrix, null); 1854 canvas.setBitmap(null); 1855 1856 thumbnail = bm; 1857 } 1858 if (description == null) { 1859 description = new TaskDescription(); 1860 } 1861 try { 1862 return getService().addAppTask(activity.getActivityToken(), 1863 intent, description, thumbnail); 1864 } catch (RemoteException e) { 1865 throw e.rethrowFromSystemServer(); 1866 } 1867 } 1868 1869 /** 1870 * Return a list of the tasks that are currently running, with 1871 * the most recent being first and older ones after in order. Note that 1872 * "running" does not mean any of the task's code is currently loaded or 1873 * activity -- the task may have been frozen by the system, so that it 1874 * can be restarted in its previous state when next brought to the 1875 * foreground. 1876 * 1877 * <p><b>Note: this method is only intended for debugging and presenting 1878 * task management user interfaces</b>. This should never be used for 1879 * core logic in an application, such as deciding between different 1880 * behaviors based on the information found here. Such uses are 1881 * <em>not</em> supported, and will likely break in the future. For 1882 * example, if multiple applications can be actively running at the 1883 * same time, assumptions made about the meaning of the data here for 1884 * purposes of control flow will be incorrect.</p> 1885 * 1886 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1887 * is no longer available to third party 1888 * applications: the introduction of document-centric recents means 1889 * it can leak person information to the caller. For backwards compatibility, 1890 * it will still return a small subset of its data: at least the caller's 1891 * own tasks, and possibly some other tasks 1892 * such as home that are known to not be sensitive. 1893 * 1894 * @param maxNum The maximum number of entries to return in the list. The 1895 * actual number returned may be smaller, depending on how many tasks the 1896 * user has started. 1897 * 1898 * @return Returns a list of RunningTaskInfo records describing each of 1899 * the running tasks. 1900 */ 1901 @Deprecated 1902 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1903 throws SecurityException { 1904 try { 1905 return getService().getTasks(maxNum); 1906 } catch (RemoteException e) { 1907 throw e.rethrowFromSystemServer(); 1908 } 1909 } 1910 1911 /** 1912 * Sets the windowing mode for a specific task. Only works on tasks of type 1913 * {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} 1914 * @param taskId The id of the task to set the windowing mode for. 1915 * @param windowingMode The windowing mode to set for the task. 1916 * @param toTop If the task should be moved to the top once the windowing mode changes. 1917 * @hide 1918 */ 1919 @TestApi 1920 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1921 public void setTaskWindowingMode(int taskId, int windowingMode, boolean toTop) 1922 throws SecurityException { 1923 try { 1924 getService().setTaskWindowingMode(taskId, windowingMode, toTop); 1925 } catch (RemoteException e) { 1926 throw e.rethrowFromSystemServer(); 1927 } 1928 } 1929 1930 /** 1931 * Moves the input task to the primary-split-screen stack. 1932 * @param taskId Id of task to move. 1933 * @param createMode The mode the primary split screen stack should be created in if it doesn't 1934 * exist already. See 1935 * {@link android.app.ActivityManager#SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT} 1936 * and 1937 * {@link android.app.ActivityManager 1938 * #SPLIT_SCREEN_CREATE_MODE_BOTTOM_OR_RIGHT} 1939 * @param toTop If the task and stack should be moved to the top. 1940 * @param animate Whether we should play an animation for the moving the task 1941 * @param initialBounds If the primary stack gets created, it will use these bounds for the 1942 * docked stack. Pass {@code null} to use default bounds. 1943 * @hide 1944 */ 1945 @TestApi 1946 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1947 public void setTaskWindowingModeSplitScreenPrimary(int taskId, int createMode, boolean toTop, 1948 boolean animate, Rect initialBounds) throws SecurityException { 1949 try { 1950 getService().setTaskWindowingModeSplitScreenPrimary(taskId, createMode, toTop, animate, 1951 initialBounds); 1952 } catch (RemoteException e) { 1953 throw e.rethrowFromSystemServer(); 1954 } 1955 } 1956 1957 /** 1958 * Resizes the input stack id to the given bounds. 1959 * @param stackId Id of the stack to resize. 1960 * @param bounds Bounds to resize the stack to or {@code null} for fullscreen. 1961 * @hide 1962 */ 1963 @TestApi 1964 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1965 public void resizeStack(int stackId, Rect bounds) throws SecurityException { 1966 try { 1967 getService().resizeStack(stackId, bounds, false /* allowResizeInDockedMode */, 1968 false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); 1969 } catch (RemoteException e) { 1970 throw e.rethrowFromSystemServer(); 1971 } 1972 } 1973 1974 /** 1975 * Removes stacks in the windowing modes from the system if they are of activity type 1976 * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED 1977 * 1978 * @hide 1979 */ 1980 @TestApi 1981 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1982 public void removeStacksInWindowingModes(int[] windowingModes) throws SecurityException { 1983 try { 1984 getService().removeStacksInWindowingModes(windowingModes); 1985 } catch (RemoteException e) { 1986 throw e.rethrowFromSystemServer(); 1987 } 1988 } 1989 1990 /** 1991 * Removes stack of the activity types from the system. 1992 * 1993 * @hide 1994 */ 1995 @TestApi 1996 @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) 1997 public void removeStacksWithActivityTypes(int[] activityTypes) throws SecurityException { 1998 try { 1999 getService().removeStacksWithActivityTypes(activityTypes); 2000 } catch (RemoteException e) { 2001 throw e.rethrowFromSystemServer(); 2002 } 2003 } 2004 2005 /** 2006 * Represents a task snapshot. 2007 * @hide 2008 */ 2009 public static class TaskSnapshot implements Parcelable { 2010 2011 private final GraphicBuffer mSnapshot; 2012 private final int mOrientation; 2013 private final Rect mContentInsets; 2014 private final boolean mReducedResolution; 2015 private final float mScale; 2016 2017 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2018 boolean reducedResolution, float scale) { 2019 mSnapshot = snapshot; 2020 mOrientation = orientation; 2021 mContentInsets = new Rect(contentInsets); 2022 mReducedResolution = reducedResolution; 2023 mScale = scale; 2024 } 2025 2026 private TaskSnapshot(Parcel source) { 2027 mSnapshot = source.readParcelable(null /* classLoader */); 2028 mOrientation = source.readInt(); 2029 mContentInsets = source.readParcelable(null /* classLoader */); 2030 mReducedResolution = source.readBoolean(); 2031 mScale = source.readFloat(); 2032 } 2033 2034 /** 2035 * @return The graphic buffer representing the screenshot. 2036 */ 2037 public GraphicBuffer getSnapshot() { 2038 return mSnapshot; 2039 } 2040 2041 /** 2042 * @return The screen orientation the screenshot was taken in. 2043 */ 2044 public int getOrientation() { 2045 return mOrientation; 2046 } 2047 2048 /** 2049 * @return The system/content insets on the snapshot. These can be clipped off in order to 2050 * remove any areas behind system bars in the snapshot. 2051 */ 2052 public Rect getContentInsets() { 2053 return mContentInsets; 2054 } 2055 2056 /** 2057 * @return Whether this snapshot is a down-sampled version of the full resolution. 2058 */ 2059 public boolean isReducedResolution() { 2060 return mReducedResolution; 2061 } 2062 2063 /** 2064 * @return The scale this snapshot was taken in. 2065 */ 2066 public float getScale() { 2067 return mScale; 2068 } 2069 2070 @Override 2071 public int describeContents() { 2072 return 0; 2073 } 2074 2075 @Override 2076 public void writeToParcel(Parcel dest, int flags) { 2077 dest.writeParcelable(mSnapshot, 0); 2078 dest.writeInt(mOrientation); 2079 dest.writeParcelable(mContentInsets, 0); 2080 dest.writeBoolean(mReducedResolution); 2081 dest.writeFloat(mScale); 2082 } 2083 2084 @Override 2085 public String toString() { 2086 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2087 + " mContentInsets=" + mContentInsets.toShortString() 2088 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2089 } 2090 2091 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2092 public TaskSnapshot createFromParcel(Parcel source) { 2093 return new TaskSnapshot(source); 2094 } 2095 public TaskSnapshot[] newArray(int size) { 2096 return new TaskSnapshot[size]; 2097 } 2098 }; 2099 } 2100 2101 /** @hide */ 2102 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2103 MOVE_TASK_WITH_HOME, 2104 MOVE_TASK_NO_USER_ACTION, 2105 }) 2106 @Retention(RetentionPolicy.SOURCE) 2107 public @interface MoveTaskFlags {} 2108 2109 /** 2110 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2111 * activity along with the task, so it is positioned immediately behind 2112 * the task. 2113 */ 2114 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2115 2116 /** 2117 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2118 * user-instigated action, so the current activity will not receive a 2119 * hint that the user is leaving. 2120 */ 2121 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2122 2123 /** 2124 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2125 * with a null options argument. 2126 * 2127 * @param taskId The identifier of the task to be moved, as found in 2128 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2129 * @param flags Additional operational flags. 2130 */ 2131 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2132 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2133 moveTaskToFront(taskId, flags, null); 2134 } 2135 2136 /** 2137 * Ask that the task associated with a given task ID be moved to the 2138 * front of the stack, so it is now visible to the user. 2139 * 2140 * @param taskId The identifier of the task to be moved, as found in 2141 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2142 * @param flags Additional operational flags. 2143 * @param options Additional options for the operation, either null or 2144 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2145 * Context.startActivity(Intent, Bundle)}. 2146 */ 2147 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2148 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2149 try { 2150 getService().moveTaskToFront(taskId, flags, options); 2151 } catch (RemoteException e) { 2152 throw e.rethrowFromSystemServer(); 2153 } 2154 } 2155 2156 /** 2157 * Information you can retrieve about a particular Service that is 2158 * currently running in the system. 2159 */ 2160 public static class RunningServiceInfo implements Parcelable { 2161 /** 2162 * The service component. 2163 */ 2164 public ComponentName service; 2165 2166 /** 2167 * If non-zero, this is the process the service is running in. 2168 */ 2169 public int pid; 2170 2171 /** 2172 * The UID that owns this service. 2173 */ 2174 public int uid; 2175 2176 /** 2177 * The name of the process this service runs in. 2178 */ 2179 public String process; 2180 2181 /** 2182 * Set to true if the service has asked to run as a foreground process. 2183 */ 2184 public boolean foreground; 2185 2186 /** 2187 * The time when the service was first made active, either by someone 2188 * starting or binding to it. This 2189 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2190 */ 2191 public long activeSince; 2192 2193 /** 2194 * Set to true if this service has been explicitly started. 2195 */ 2196 public boolean started; 2197 2198 /** 2199 * Number of clients connected to the service. 2200 */ 2201 public int clientCount; 2202 2203 /** 2204 * Number of times the service's process has crashed while the service 2205 * is running. 2206 */ 2207 public int crashCount; 2208 2209 /** 2210 * The time when there was last activity in the service (either 2211 * explicit requests to start it or clients binding to it). This 2212 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2213 */ 2214 public long lastActivityTime; 2215 2216 /** 2217 * If non-zero, this service is not currently running, but scheduled to 2218 * restart at the given time. 2219 */ 2220 public long restarting; 2221 2222 /** 2223 * Bit for {@link #flags}: set if this service has been 2224 * explicitly started. 2225 */ 2226 public static final int FLAG_STARTED = 1<<0; 2227 2228 /** 2229 * Bit for {@link #flags}: set if the service has asked to 2230 * run as a foreground process. 2231 */ 2232 public static final int FLAG_FOREGROUND = 1<<1; 2233 2234 /** 2235 * Bit for {@link #flags}: set if the service is running in a 2236 * core system process. 2237 */ 2238 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2239 2240 /** 2241 * Bit for {@link #flags}: set if the service is running in a 2242 * persistent process. 2243 */ 2244 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2245 2246 /** 2247 * Running flags. 2248 */ 2249 public int flags; 2250 2251 /** 2252 * For special services that are bound to by system code, this is 2253 * the package that holds the binding. 2254 */ 2255 public String clientPackage; 2256 2257 /** 2258 * For special services that are bound to by system code, this is 2259 * a string resource providing a user-visible label for who the 2260 * client is. 2261 */ 2262 public int clientLabel; 2263 2264 public RunningServiceInfo() { 2265 } 2266 2267 public int describeContents() { 2268 return 0; 2269 } 2270 2271 public void writeToParcel(Parcel dest, int flags) { 2272 ComponentName.writeToParcel(service, dest); 2273 dest.writeInt(pid); 2274 dest.writeInt(uid); 2275 dest.writeString(process); 2276 dest.writeInt(foreground ? 1 : 0); 2277 dest.writeLong(activeSince); 2278 dest.writeInt(started ? 1 : 0); 2279 dest.writeInt(clientCount); 2280 dest.writeInt(crashCount); 2281 dest.writeLong(lastActivityTime); 2282 dest.writeLong(restarting); 2283 dest.writeInt(this.flags); 2284 dest.writeString(clientPackage); 2285 dest.writeInt(clientLabel); 2286 } 2287 2288 public void readFromParcel(Parcel source) { 2289 service = ComponentName.readFromParcel(source); 2290 pid = source.readInt(); 2291 uid = source.readInt(); 2292 process = source.readString(); 2293 foreground = source.readInt() != 0; 2294 activeSince = source.readLong(); 2295 started = source.readInt() != 0; 2296 clientCount = source.readInt(); 2297 crashCount = source.readInt(); 2298 lastActivityTime = source.readLong(); 2299 restarting = source.readLong(); 2300 flags = source.readInt(); 2301 clientPackage = source.readString(); 2302 clientLabel = source.readInt(); 2303 } 2304 2305 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2306 public RunningServiceInfo createFromParcel(Parcel source) { 2307 return new RunningServiceInfo(source); 2308 } 2309 public RunningServiceInfo[] newArray(int size) { 2310 return new RunningServiceInfo[size]; 2311 } 2312 }; 2313 2314 private RunningServiceInfo(Parcel source) { 2315 readFromParcel(source); 2316 } 2317 } 2318 2319 /** 2320 * Return a list of the services that are currently running. 2321 * 2322 * <p><b>Note: this method is only intended for debugging or implementing 2323 * service management type user interfaces.</b></p> 2324 * 2325 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2326 * is no longer available to third party applications. For backwards compatibility, 2327 * it will still return the caller's own services. 2328 * 2329 * @param maxNum The maximum number of entries to return in the list. The 2330 * actual number returned may be smaller, depending on how many services 2331 * are running. 2332 * 2333 * @return Returns a list of RunningServiceInfo records describing each of 2334 * the running tasks. 2335 */ 2336 @Deprecated 2337 public List<RunningServiceInfo> getRunningServices(int maxNum) 2338 throws SecurityException { 2339 try { 2340 return getService() 2341 .getServices(maxNum, 0); 2342 } catch (RemoteException e) { 2343 throw e.rethrowFromSystemServer(); 2344 } 2345 } 2346 2347 /** 2348 * Returns a PendingIntent you can start to show a control panel for the 2349 * given running service. If the service does not have a control panel, 2350 * null is returned. 2351 */ 2352 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2353 throws SecurityException { 2354 try { 2355 return getService() 2356 .getRunningServiceControlPanel(service); 2357 } catch (RemoteException e) { 2358 throw e.rethrowFromSystemServer(); 2359 } 2360 } 2361 2362 /** 2363 * Information you can retrieve about the available memory through 2364 * {@link ActivityManager#getMemoryInfo}. 2365 */ 2366 public static class MemoryInfo implements Parcelable { 2367 /** 2368 * The available memory on the system. This number should not 2369 * be considered absolute: due to the nature of the kernel, a significant 2370 * portion of this memory is actually in use and needed for the overall 2371 * system to run well. 2372 */ 2373 public long availMem; 2374 2375 /** 2376 * The total memory accessible by the kernel. This is basically the 2377 * RAM size of the device, not including below-kernel fixed allocations 2378 * like DMA buffers, RAM for the baseband CPU, etc. 2379 */ 2380 public long totalMem; 2381 2382 /** 2383 * The threshold of {@link #availMem} at which we consider memory to be 2384 * low and start killing background services and other non-extraneous 2385 * processes. 2386 */ 2387 public long threshold; 2388 2389 /** 2390 * Set to true if the system considers itself to currently be in a low 2391 * memory situation. 2392 */ 2393 public boolean lowMemory; 2394 2395 /** @hide */ 2396 public long hiddenAppThreshold; 2397 /** @hide */ 2398 public long secondaryServerThreshold; 2399 /** @hide */ 2400 public long visibleAppThreshold; 2401 /** @hide */ 2402 public long foregroundAppThreshold; 2403 2404 public MemoryInfo() { 2405 } 2406 2407 public int describeContents() { 2408 return 0; 2409 } 2410 2411 public void writeToParcel(Parcel dest, int flags) { 2412 dest.writeLong(availMem); 2413 dest.writeLong(totalMem); 2414 dest.writeLong(threshold); 2415 dest.writeInt(lowMemory ? 1 : 0); 2416 dest.writeLong(hiddenAppThreshold); 2417 dest.writeLong(secondaryServerThreshold); 2418 dest.writeLong(visibleAppThreshold); 2419 dest.writeLong(foregroundAppThreshold); 2420 } 2421 2422 public void readFromParcel(Parcel source) { 2423 availMem = source.readLong(); 2424 totalMem = source.readLong(); 2425 threshold = source.readLong(); 2426 lowMemory = source.readInt() != 0; 2427 hiddenAppThreshold = source.readLong(); 2428 secondaryServerThreshold = source.readLong(); 2429 visibleAppThreshold = source.readLong(); 2430 foregroundAppThreshold = source.readLong(); 2431 } 2432 2433 public static final Creator<MemoryInfo> CREATOR 2434 = new Creator<MemoryInfo>() { 2435 public MemoryInfo createFromParcel(Parcel source) { 2436 return new MemoryInfo(source); 2437 } 2438 public MemoryInfo[] newArray(int size) { 2439 return new MemoryInfo[size]; 2440 } 2441 }; 2442 2443 private MemoryInfo(Parcel source) { 2444 readFromParcel(source); 2445 } 2446 } 2447 2448 /** 2449 * Return general information about the memory state of the system. This 2450 * can be used to help decide how to manage your own memory, though note 2451 * that polling is not recommended and 2452 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2453 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2454 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2455 * level of your process as needed, which gives a better hint for how to 2456 * manage its memory. 2457 */ 2458 public void getMemoryInfo(MemoryInfo outInfo) { 2459 try { 2460 getService().getMemoryInfo(outInfo); 2461 } catch (RemoteException e) { 2462 throw e.rethrowFromSystemServer(); 2463 } 2464 } 2465 2466 /** 2467 * Information you can retrieve about an ActivityStack in the system. 2468 * @hide 2469 */ 2470 public static class StackInfo implements Parcelable { 2471 public int stackId; 2472 public Rect bounds = new Rect(); 2473 public int[] taskIds; 2474 public String[] taskNames; 2475 public Rect[] taskBounds; 2476 public int[] taskUserIds; 2477 public ComponentName topActivity; 2478 public int displayId; 2479 public int userId; 2480 public boolean visible; 2481 // Index of the stack in the display's stack list, can be used for comparison of stack order 2482 public int position; 2483 /** 2484 * The full configuration the stack is currently running in. 2485 * @hide 2486 */ 2487 final public Configuration configuration = new Configuration(); 2488 2489 @Override 2490 public int describeContents() { 2491 return 0; 2492 } 2493 2494 @Override 2495 public void writeToParcel(Parcel dest, int flags) { 2496 dest.writeInt(stackId); 2497 dest.writeInt(bounds.left); 2498 dest.writeInt(bounds.top); 2499 dest.writeInt(bounds.right); 2500 dest.writeInt(bounds.bottom); 2501 dest.writeIntArray(taskIds); 2502 dest.writeStringArray(taskNames); 2503 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2504 dest.writeInt(boundsCount); 2505 for (int i = 0; i < boundsCount; i++) { 2506 dest.writeInt(taskBounds[i].left); 2507 dest.writeInt(taskBounds[i].top); 2508 dest.writeInt(taskBounds[i].right); 2509 dest.writeInt(taskBounds[i].bottom); 2510 } 2511 dest.writeIntArray(taskUserIds); 2512 dest.writeInt(displayId); 2513 dest.writeInt(userId); 2514 dest.writeInt(visible ? 1 : 0); 2515 dest.writeInt(position); 2516 if (topActivity != null) { 2517 dest.writeInt(1); 2518 topActivity.writeToParcel(dest, 0); 2519 } else { 2520 dest.writeInt(0); 2521 } 2522 configuration.writeToParcel(dest, flags); 2523 } 2524 2525 public void readFromParcel(Parcel source) { 2526 stackId = source.readInt(); 2527 bounds = new Rect( 2528 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2529 taskIds = source.createIntArray(); 2530 taskNames = source.createStringArray(); 2531 final int boundsCount = source.readInt(); 2532 if (boundsCount > 0) { 2533 taskBounds = new Rect[boundsCount]; 2534 for (int i = 0; i < boundsCount; i++) { 2535 taskBounds[i] = new Rect(); 2536 taskBounds[i].set( 2537 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2538 } 2539 } else { 2540 taskBounds = null; 2541 } 2542 taskUserIds = source.createIntArray(); 2543 displayId = source.readInt(); 2544 userId = source.readInt(); 2545 visible = source.readInt() > 0; 2546 position = source.readInt(); 2547 if (source.readInt() > 0) { 2548 topActivity = ComponentName.readFromParcel(source); 2549 } 2550 configuration.readFromParcel(source); 2551 } 2552 2553 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2554 @Override 2555 public StackInfo createFromParcel(Parcel source) { 2556 return new StackInfo(source); 2557 } 2558 @Override 2559 public StackInfo[] newArray(int size) { 2560 return new StackInfo[size]; 2561 } 2562 }; 2563 2564 public StackInfo() { 2565 } 2566 2567 private StackInfo(Parcel source) { 2568 readFromParcel(source); 2569 } 2570 2571 public String toString(String prefix) { 2572 StringBuilder sb = new StringBuilder(256); 2573 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2574 sb.append(" bounds="); sb.append(bounds.toShortString()); 2575 sb.append(" displayId="); sb.append(displayId); 2576 sb.append(" userId="); sb.append(userId); 2577 sb.append("\n"); 2578 sb.append(" configuration="); sb.append(configuration); 2579 sb.append("\n"); 2580 prefix = prefix + " "; 2581 for (int i = 0; i < taskIds.length; ++i) { 2582 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2583 sb.append(": "); sb.append(taskNames[i]); 2584 if (taskBounds != null) { 2585 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2586 } 2587 sb.append(" userId=").append(taskUserIds[i]); 2588 sb.append(" visible=").append(visible); 2589 if (topActivity != null) { 2590 sb.append(" topActivity=").append(topActivity); 2591 } 2592 sb.append("\n"); 2593 } 2594 return sb.toString(); 2595 } 2596 2597 @Override 2598 public String toString() { 2599 return toString(""); 2600 } 2601 } 2602 2603 /** 2604 * @hide 2605 */ 2606 @RequiresPermission(anyOf={Manifest.permission.CLEAR_APP_USER_DATA, 2607 Manifest.permission.ACCESS_INSTANT_APPS}) 2608 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2609 try { 2610 return getService().clearApplicationUserData(packageName, 2611 observer, UserHandle.myUserId()); 2612 } catch (RemoteException e) { 2613 throw e.rethrowFromSystemServer(); 2614 } 2615 } 2616 2617 /** 2618 * Permits an application to erase its own data from disk. This is equivalent to 2619 * the user choosing to clear the app's data from within the device settings UI. It 2620 * erases all dynamic data associated with the app -- its private data and data in its 2621 * private area on external storage -- but does not remove the installed application 2622 * itself, nor any OBB files. It also revokes all runtime permissions that the app has acquired, 2623 * clears all notifications and removes all Uri grants related to this application. 2624 * 2625 * @return {@code true} if the application successfully requested that the application's 2626 * data be erased; {@code false} otherwise. 2627 */ 2628 public boolean clearApplicationUserData() { 2629 return clearApplicationUserData(mContext.getPackageName(), null); 2630 } 2631 2632 2633 /** 2634 * Permits an application to get the persistent URI permissions granted to another. 2635 * 2636 * <p>Typically called by Settings. 2637 * 2638 * @param packageName application to look for the granted permissions 2639 * @return list of granted URI permissions 2640 * 2641 * @hide 2642 */ 2643 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2644 try { 2645 return getService().getGrantedUriPermissions(packageName, 2646 UserHandle.myUserId()); 2647 } catch (RemoteException e) { 2648 throw e.rethrowFromSystemServer(); 2649 } 2650 } 2651 2652 /** 2653 * Permits an application to clear the persistent URI permissions granted to another. 2654 * 2655 * <p>Typically called by Settings. 2656 * 2657 * @param packageName application to clear its granted permissions 2658 * 2659 * @hide 2660 */ 2661 public void clearGrantedUriPermissions(String packageName) { 2662 try { 2663 getService().clearGrantedUriPermissions(packageName, 2664 UserHandle.myUserId()); 2665 } catch (RemoteException e) { 2666 throw e.rethrowFromSystemServer(); 2667 } 2668 } 2669 2670 /** 2671 * Information you can retrieve about any processes that are in an error condition. 2672 */ 2673 public static class ProcessErrorStateInfo implements Parcelable { 2674 /** 2675 * Condition codes 2676 */ 2677 public static final int NO_ERROR = 0; 2678 public static final int CRASHED = 1; 2679 public static final int NOT_RESPONDING = 2; 2680 2681 /** 2682 * The condition that the process is in. 2683 */ 2684 public int condition; 2685 2686 /** 2687 * The process name in which the crash or error occurred. 2688 */ 2689 public String processName; 2690 2691 /** 2692 * The pid of this process; 0 if none 2693 */ 2694 public int pid; 2695 2696 /** 2697 * The kernel user-ID that has been assigned to this process; 2698 * currently this is not a unique ID (multiple applications can have 2699 * the same uid). 2700 */ 2701 public int uid; 2702 2703 /** 2704 * The activity name associated with the error, if known. May be null. 2705 */ 2706 public String tag; 2707 2708 /** 2709 * A short message describing the error condition. 2710 */ 2711 public String shortMsg; 2712 2713 /** 2714 * A long message describing the error condition. 2715 */ 2716 public String longMsg; 2717 2718 /** 2719 * The stack trace where the error originated. May be null. 2720 */ 2721 public String stackTrace; 2722 2723 /** 2724 * to be deprecated: This value will always be null. 2725 */ 2726 public byte[] crashData = null; 2727 2728 public ProcessErrorStateInfo() { 2729 } 2730 2731 @Override 2732 public int describeContents() { 2733 return 0; 2734 } 2735 2736 @Override 2737 public void writeToParcel(Parcel dest, int flags) { 2738 dest.writeInt(condition); 2739 dest.writeString(processName); 2740 dest.writeInt(pid); 2741 dest.writeInt(uid); 2742 dest.writeString(tag); 2743 dest.writeString(shortMsg); 2744 dest.writeString(longMsg); 2745 dest.writeString(stackTrace); 2746 } 2747 2748 public void readFromParcel(Parcel source) { 2749 condition = source.readInt(); 2750 processName = source.readString(); 2751 pid = source.readInt(); 2752 uid = source.readInt(); 2753 tag = source.readString(); 2754 shortMsg = source.readString(); 2755 longMsg = source.readString(); 2756 stackTrace = source.readString(); 2757 } 2758 2759 public static final Creator<ProcessErrorStateInfo> CREATOR = 2760 new Creator<ProcessErrorStateInfo>() { 2761 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2762 return new ProcessErrorStateInfo(source); 2763 } 2764 public ProcessErrorStateInfo[] newArray(int size) { 2765 return new ProcessErrorStateInfo[size]; 2766 } 2767 }; 2768 2769 private ProcessErrorStateInfo(Parcel source) { 2770 readFromParcel(source); 2771 } 2772 } 2773 2774 /** 2775 * Returns a list of any processes that are currently in an error condition. The result 2776 * will be null if all processes are running properly at this time. 2777 * 2778 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2779 * current error conditions (it will not return an empty list). This list ordering is not 2780 * specified. 2781 */ 2782 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2783 try { 2784 return getService().getProcessesInErrorState(); 2785 } catch (RemoteException e) { 2786 throw e.rethrowFromSystemServer(); 2787 } 2788 } 2789 2790 /** 2791 * Information you can retrieve about a running process. 2792 */ 2793 public static class RunningAppProcessInfo implements Parcelable { 2794 /** 2795 * The name of the process that this object is associated with 2796 */ 2797 public String processName; 2798 2799 /** 2800 * The pid of this process; 0 if none 2801 */ 2802 public int pid; 2803 2804 /** 2805 * The user id of this process. 2806 */ 2807 public int uid; 2808 2809 /** 2810 * All packages that have been loaded into the process. 2811 */ 2812 public String pkgList[]; 2813 2814 /** 2815 * Constant for {@link #flags}: this is an app that is unable to 2816 * correctly save its state when going to the background, 2817 * so it can not be killed while in the background. 2818 * @hide 2819 */ 2820 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2821 2822 /** 2823 * Constant for {@link #flags}: this process is associated with a 2824 * persistent system app. 2825 * @hide 2826 */ 2827 public static final int FLAG_PERSISTENT = 1<<1; 2828 2829 /** 2830 * Constant for {@link #flags}: this process is associated with a 2831 * persistent system app. 2832 * @hide 2833 */ 2834 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2835 2836 /** 2837 * Flags of information. May be any of 2838 * {@link #FLAG_CANT_SAVE_STATE}. 2839 * @hide 2840 */ 2841 public int flags; 2842 2843 /** 2844 * Last memory trim level reported to the process: corresponds to 2845 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2846 * ComponentCallbacks2.onTrimMemory(int)}. 2847 */ 2848 public int lastTrimLevel; 2849 2850 /** @hide */ 2851 @IntDef(prefix = { "IMPORTANCE_" }, value = { 2852 IMPORTANCE_FOREGROUND, 2853 IMPORTANCE_FOREGROUND_SERVICE, 2854 IMPORTANCE_TOP_SLEEPING, 2855 IMPORTANCE_VISIBLE, 2856 IMPORTANCE_PERCEPTIBLE, 2857 IMPORTANCE_CANT_SAVE_STATE, 2858 IMPORTANCE_SERVICE, 2859 IMPORTANCE_CACHED, 2860 IMPORTANCE_GONE, 2861 }) 2862 @Retention(RetentionPolicy.SOURCE) 2863 public @interface Importance {} 2864 2865 /** 2866 * Constant for {@link #importance}: This process is running the 2867 * foreground UI; that is, it is the thing currently at the top of the screen 2868 * that the user is interacting with. 2869 */ 2870 public static final int IMPORTANCE_FOREGROUND = 100; 2871 2872 /** 2873 * Constant for {@link #importance}: This process is running a foreground 2874 * service, for example to perform music playback even while the user is 2875 * not immediately in the app. This generally indicates that the process 2876 * is doing something the user actively cares about. 2877 */ 2878 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2879 2880 /** 2881 * Constant for {@link #importance}: This process is running the foreground 2882 * UI, but the device is asleep so it is not visible to the user. This means 2883 * the user is not really aware of the process, because they can not see or 2884 * interact with it, but it is quite important because it what they expect to 2885 * return to once unlocking the device. 2886 */ 2887 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2888 2889 /** 2890 * Constant for {@link #importance}: This process is running something 2891 * that is actively visible to the user, though not in the immediate 2892 * foreground. This may be running a window that is behind the current 2893 * foreground (so paused and with its state saved, not interacting with 2894 * the user, but visible to them to some degree); it may also be running 2895 * other services under the system's control that it inconsiders important. 2896 */ 2897 public static final int IMPORTANCE_VISIBLE = 200; 2898 2899 /** 2900 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 2901 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2902 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 2903 * 2904 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 2905 * on Android versions below {@link Build.VERSION_CODES#O}. 2906 * 2907 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 2908 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2909 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2910 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 2911 */ 2912 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 2913 2914 /** 2915 * Constant for {@link #importance}: This process is not something the user 2916 * is directly aware of, but is otherwise perceptible to them to some degree. 2917 */ 2918 public static final int IMPORTANCE_PERCEPTIBLE = 230; 2919 2920 /** 2921 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 2922 * this wrong value 2923 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 2924 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 2925 * 2926 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 2927 * on Android versions below {@link Build.VERSION_CODES#O}. 2928 * 2929 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 2930 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 2931 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 2932 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 2933 * 2934 * @hide 2935 */ 2936 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 2937 2938 /** 2939 * Constant for {@link #importance}: This process is running an 2940 * application that can not save its state, and thus can't be killed 2941 * while in the background. 2942 * @hide 2943 */ 2944 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 2945 2946 /** 2947 * Constant for {@link #importance}: This process is contains services 2948 * that should remain running. These are background services apps have 2949 * started, not something the user is aware of, so they may be killed by 2950 * the system relatively freely (though it is generally desired that they 2951 * stay running as long as they want to). 2952 */ 2953 public static final int IMPORTANCE_SERVICE = 300; 2954 2955 /** 2956 * Constant for {@link #importance}: This process process contains 2957 * cached code that is expendable, not actively running any app components 2958 * we care about. 2959 */ 2960 public static final int IMPORTANCE_CACHED = 400; 2961 2962 /** 2963 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 2964 */ 2965 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 2966 2967 /** 2968 * Constant for {@link #importance}: This process is empty of any 2969 * actively running code. 2970 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 2971 */ 2972 @Deprecated 2973 public static final int IMPORTANCE_EMPTY = 500; 2974 2975 /** 2976 * Constant for {@link #importance}: This process does not exist. 2977 */ 2978 public static final int IMPORTANCE_GONE = 1000; 2979 2980 /** 2981 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 2982 * will be passed to a client, use {@link #procStateToImportanceForClient}. 2983 * @hide 2984 */ 2985 public static @Importance int procStateToImportance(int procState) { 2986 if (procState == PROCESS_STATE_NONEXISTENT) { 2987 return IMPORTANCE_GONE; 2988 } else if (procState >= PROCESS_STATE_HOME) { 2989 return IMPORTANCE_CACHED; 2990 } else if (procState >= PROCESS_STATE_SERVICE) { 2991 return IMPORTANCE_SERVICE; 2992 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2993 return IMPORTANCE_CANT_SAVE_STATE; 2994 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 2995 return IMPORTANCE_PERCEPTIBLE; 2996 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2997 return IMPORTANCE_VISIBLE; 2998 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2999 return IMPORTANCE_TOP_SLEEPING; 3000 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3001 return IMPORTANCE_FOREGROUND_SERVICE; 3002 } else { 3003 return IMPORTANCE_FOREGROUND; 3004 } 3005 } 3006 3007 /** 3008 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 3009 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 3010 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 3011 * client's target SDK < {@link VERSION_CODES#O}. 3012 * @hide 3013 */ 3014 public static @Importance int procStateToImportanceForClient(int procState, 3015 Context clientContext) { 3016 return procStateToImportanceForTargetSdk(procState, 3017 clientContext.getApplicationInfo().targetSdkVersion); 3018 } 3019 3020 /** 3021 * See {@link #procStateToImportanceForClient}. 3022 * @hide 3023 */ 3024 public static @Importance int procStateToImportanceForTargetSdk(int procState, 3025 int targetSdkVersion) { 3026 final int importance = procStateToImportance(procState); 3027 3028 // For pre O apps, convert to the old, wrong values. 3029 if (targetSdkVersion < VERSION_CODES.O) { 3030 switch (importance) { 3031 case IMPORTANCE_PERCEPTIBLE: 3032 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3033 case IMPORTANCE_CANT_SAVE_STATE: 3034 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3035 } 3036 } 3037 return importance; 3038 } 3039 3040 /** @hide */ 3041 public static int importanceToProcState(@Importance int importance) { 3042 if (importance == IMPORTANCE_GONE) { 3043 return PROCESS_STATE_NONEXISTENT; 3044 } else if (importance >= IMPORTANCE_CACHED) { 3045 return PROCESS_STATE_HOME; 3046 } else if (importance >= IMPORTANCE_SERVICE) { 3047 return PROCESS_STATE_SERVICE; 3048 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3049 return PROCESS_STATE_HEAVY_WEIGHT; 3050 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3051 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3052 } else if (importance >= IMPORTANCE_VISIBLE) { 3053 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3054 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3055 return PROCESS_STATE_TOP_SLEEPING; 3056 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3057 return PROCESS_STATE_FOREGROUND_SERVICE; 3058 } else { 3059 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3060 } 3061 } 3062 3063 /** 3064 * The relative importance level that the system places on this process. 3065 * These constants are numbered so that "more important" values are 3066 * always smaller than "less important" values. 3067 */ 3068 public @Importance int importance; 3069 3070 /** 3071 * An additional ordering within a particular {@link #importance} 3072 * category, providing finer-grained information about the relative 3073 * utility of processes within a category. This number means nothing 3074 * except that a smaller values are more recently used (and thus 3075 * more important). Currently an LRU value is only maintained for 3076 * the {@link #IMPORTANCE_CACHED} category, though others may 3077 * be maintained in the future. 3078 */ 3079 public int lru; 3080 3081 /** 3082 * Constant for {@link #importanceReasonCode}: nothing special has 3083 * been specified for the reason for this level. 3084 */ 3085 public static final int REASON_UNKNOWN = 0; 3086 3087 /** 3088 * Constant for {@link #importanceReasonCode}: one of the application's 3089 * content providers is being used by another process. The pid of 3090 * the client process is in {@link #importanceReasonPid} and the 3091 * target provider in this process is in 3092 * {@link #importanceReasonComponent}. 3093 */ 3094 public static final int REASON_PROVIDER_IN_USE = 1; 3095 3096 /** 3097 * Constant for {@link #importanceReasonCode}: one of the application's 3098 * content providers is being used by another process. The pid of 3099 * the client process is in {@link #importanceReasonPid} and the 3100 * target provider in this process is in 3101 * {@link #importanceReasonComponent}. 3102 */ 3103 public static final int REASON_SERVICE_IN_USE = 2; 3104 3105 /** 3106 * The reason for {@link #importance}, if any. 3107 */ 3108 public int importanceReasonCode; 3109 3110 /** 3111 * For the specified values of {@link #importanceReasonCode}, this 3112 * is the process ID of the other process that is a client of this 3113 * process. This will be 0 if no other process is using this one. 3114 */ 3115 public int importanceReasonPid; 3116 3117 /** 3118 * For the specified values of {@link #importanceReasonCode}, this 3119 * is the name of the component that is being used in this process. 3120 */ 3121 public ComponentName importanceReasonComponent; 3122 3123 /** 3124 * When {@link #importanceReasonPid} is non-0, this is the importance 3125 * of the other pid. @hide 3126 */ 3127 public int importanceReasonImportance; 3128 3129 /** 3130 * Current process state, as per PROCESS_STATE_* constants. 3131 * @hide 3132 */ 3133 public int processState; 3134 3135 public RunningAppProcessInfo() { 3136 importance = IMPORTANCE_FOREGROUND; 3137 importanceReasonCode = REASON_UNKNOWN; 3138 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3139 } 3140 3141 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3142 processName = pProcessName; 3143 pid = pPid; 3144 pkgList = pArr; 3145 } 3146 3147 public int describeContents() { 3148 return 0; 3149 } 3150 3151 public void writeToParcel(Parcel dest, int flags) { 3152 dest.writeString(processName); 3153 dest.writeInt(pid); 3154 dest.writeInt(uid); 3155 dest.writeStringArray(pkgList); 3156 dest.writeInt(this.flags); 3157 dest.writeInt(lastTrimLevel); 3158 dest.writeInt(importance); 3159 dest.writeInt(lru); 3160 dest.writeInt(importanceReasonCode); 3161 dest.writeInt(importanceReasonPid); 3162 ComponentName.writeToParcel(importanceReasonComponent, dest); 3163 dest.writeInt(importanceReasonImportance); 3164 dest.writeInt(processState); 3165 } 3166 3167 public void readFromParcel(Parcel source) { 3168 processName = source.readString(); 3169 pid = source.readInt(); 3170 uid = source.readInt(); 3171 pkgList = source.readStringArray(); 3172 flags = source.readInt(); 3173 lastTrimLevel = source.readInt(); 3174 importance = source.readInt(); 3175 lru = source.readInt(); 3176 importanceReasonCode = source.readInt(); 3177 importanceReasonPid = source.readInt(); 3178 importanceReasonComponent = ComponentName.readFromParcel(source); 3179 importanceReasonImportance = source.readInt(); 3180 processState = source.readInt(); 3181 } 3182 3183 public static final Creator<RunningAppProcessInfo> CREATOR = 3184 new Creator<RunningAppProcessInfo>() { 3185 public RunningAppProcessInfo createFromParcel(Parcel source) { 3186 return new RunningAppProcessInfo(source); 3187 } 3188 public RunningAppProcessInfo[] newArray(int size) { 3189 return new RunningAppProcessInfo[size]; 3190 } 3191 }; 3192 3193 private RunningAppProcessInfo(Parcel source) { 3194 readFromParcel(source); 3195 } 3196 } 3197 3198 /** 3199 * Returns a list of application processes installed on external media 3200 * that are running on the device. 3201 * 3202 * <p><b>Note: this method is only intended for debugging or building 3203 * a user-facing process management UI.</b></p> 3204 * 3205 * @return Returns a list of ApplicationInfo records, or null if none 3206 * This list ordering is not specified. 3207 * @hide 3208 */ 3209 public List<ApplicationInfo> getRunningExternalApplications() { 3210 try { 3211 return getService().getRunningExternalApplications(); 3212 } catch (RemoteException e) { 3213 throw e.rethrowFromSystemServer(); 3214 } 3215 } 3216 3217 /** 3218 * Sets the memory trim mode for a process and schedules a memory trim operation. 3219 * 3220 * <p><b>Note: this method is only intended for testing framework.</b></p> 3221 * 3222 * @return Returns true if successful. 3223 * @hide 3224 */ 3225 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3226 try { 3227 return getService().setProcessMemoryTrimLevel(process, userId, 3228 level); 3229 } catch (RemoteException e) { 3230 throw e.rethrowFromSystemServer(); 3231 } 3232 } 3233 3234 /** 3235 * Returns a list of application processes that are running on the device. 3236 * 3237 * <p><b>Note: this method is only intended for debugging or building 3238 * a user-facing process management UI.</b></p> 3239 * 3240 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3241 * running processes (it will not return an empty list). This list ordering is not 3242 * specified. 3243 */ 3244 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3245 try { 3246 return getService().getRunningAppProcesses(); 3247 } catch (RemoteException e) { 3248 throw e.rethrowFromSystemServer(); 3249 } 3250 } 3251 3252 /** 3253 * Return the importance of a given package name, based on the processes that are 3254 * currently running. The return value is one of the importance constants defined 3255 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3256 * processes that this package has code running inside of. If there are no processes 3257 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3258 * @hide 3259 */ 3260 @SystemApi @TestApi 3261 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3262 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3263 try { 3264 int procState = getService().getPackageProcessState(packageName, 3265 mContext.getOpPackageName()); 3266 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3267 } catch (RemoteException e) { 3268 throw e.rethrowFromSystemServer(); 3269 } 3270 } 3271 3272 /** 3273 * Return the importance of a given uid, based on the processes that are 3274 * currently running. The return value is one of the importance constants defined 3275 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3276 * processes that this uid has running. If there are no processes 3277 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3278 * @hide 3279 */ 3280 @SystemApi @TestApi 3281 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3282 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3283 try { 3284 int procState = getService().getUidProcessState(uid, 3285 mContext.getOpPackageName()); 3286 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3287 } catch (RemoteException e) { 3288 throw e.rethrowFromSystemServer(); 3289 } 3290 } 3291 3292 /** 3293 * Callback to get reports about changes to the importance of a uid. Use with 3294 * {@link #addOnUidImportanceListener}. 3295 * @hide 3296 */ 3297 @SystemApi @TestApi 3298 public interface OnUidImportanceListener { 3299 /** 3300 * The importance if a given uid has changed. Will be one of the importance 3301 * values in {@link RunningAppProcessInfo}; 3302 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3303 * when the uid is no longer running at all. This callback will happen on a thread 3304 * from a thread pool, not the main UI thread. 3305 * @param uid The uid whose importance has changed. 3306 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3307 */ 3308 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3309 } 3310 3311 /** 3312 * Start monitoring changes to the imoportance of uids running in the system. 3313 * @param listener The listener callback that will receive change reports. 3314 * @param importanceCutpoint The level of importance in which the caller is interested 3315 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3316 * is used here, you will receive a call each time a uids importance transitions between 3317 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3318 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3319 * 3320 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3321 * permission to use this feature.</p> 3322 * 3323 * @throws IllegalArgumentException If the listener is already registered. 3324 * @throws SecurityException If the caller does not hold 3325 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3326 * @hide 3327 */ 3328 @SystemApi @TestApi 3329 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3330 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3331 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3332 synchronized (this) { 3333 if (mImportanceListeners.containsKey(listener)) { 3334 throw new IllegalArgumentException("Listener already registered: " + listener); 3335 } 3336 // TODO: implement the cut point in the system process to avoid IPCs. 3337 UidObserver observer = new UidObserver(listener, mContext); 3338 try { 3339 getService().registerUidObserver(observer, 3340 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3341 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3342 mContext.getOpPackageName()); 3343 } catch (RemoteException e) { 3344 throw e.rethrowFromSystemServer(); 3345 } 3346 mImportanceListeners.put(listener, observer); 3347 } 3348 } 3349 3350 /** 3351 * Remove an importance listener that was previously registered with 3352 * {@link #addOnUidImportanceListener}. 3353 * 3354 * @throws IllegalArgumentException If the listener is not registered. 3355 * @hide 3356 */ 3357 @SystemApi @TestApi 3358 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3359 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3360 synchronized (this) { 3361 UidObserver observer = mImportanceListeners.remove(listener); 3362 if (observer == null) { 3363 throw new IllegalArgumentException("Listener not registered: " + listener); 3364 } 3365 try { 3366 getService().unregisterUidObserver(observer); 3367 } catch (RemoteException e) { 3368 throw e.rethrowFromSystemServer(); 3369 } 3370 } 3371 } 3372 3373 /** 3374 * Return global memory state information for the calling process. This 3375 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3376 * only fields that will be filled in are 3377 * {@link RunningAppProcessInfo#pid}, 3378 * {@link RunningAppProcessInfo#uid}, 3379 * {@link RunningAppProcessInfo#lastTrimLevel}, 3380 * {@link RunningAppProcessInfo#importance}, 3381 * {@link RunningAppProcessInfo#lru}, and 3382 * {@link RunningAppProcessInfo#importanceReasonCode}. 3383 */ 3384 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3385 try { 3386 getService().getMyMemoryState(outState); 3387 } catch (RemoteException e) { 3388 throw e.rethrowFromSystemServer(); 3389 } 3390 } 3391 3392 /** 3393 * Return information about the memory usage of one or more processes. 3394 * 3395 * <p><b>Note: this method is only intended for debugging or building 3396 * a user-facing process management UI.</b></p> 3397 * 3398 * @param pids The pids of the processes whose memory usage is to be 3399 * retrieved. 3400 * @return Returns an array of memory information, one for each 3401 * requested pid. 3402 */ 3403 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3404 try { 3405 return getService().getProcessMemoryInfo(pids); 3406 } catch (RemoteException e) { 3407 throw e.rethrowFromSystemServer(); 3408 } 3409 } 3410 3411 /** 3412 * @deprecated This is now just a wrapper for 3413 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3414 * is no longer available to applications because it allows them to 3415 * break other applications by removing their alarms, stopping their 3416 * services, etc. 3417 */ 3418 @Deprecated 3419 public void restartPackage(String packageName) { 3420 killBackgroundProcesses(packageName); 3421 } 3422 3423 /** 3424 * Have the system immediately kill all background processes associated 3425 * with the given package. This is the same as the kernel killing those 3426 * processes to reclaim memory; the system will take care of restarting 3427 * these processes in the future as needed. 3428 * 3429 * @param packageName The name of the package whose processes are to 3430 * be killed. 3431 */ 3432 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3433 public void killBackgroundProcesses(String packageName) { 3434 try { 3435 getService().killBackgroundProcesses(packageName, 3436 UserHandle.myUserId()); 3437 } catch (RemoteException e) { 3438 throw e.rethrowFromSystemServer(); 3439 } 3440 } 3441 3442 /** 3443 * Kills the specified UID. 3444 * @param uid The UID to kill. 3445 * @param reason The reason for the kill. 3446 * 3447 * @hide 3448 */ 3449 @SystemApi 3450 @RequiresPermission(Manifest.permission.KILL_UID) 3451 public void killUid(int uid, String reason) { 3452 try { 3453 getService().killUid(UserHandle.getAppId(uid), 3454 UserHandle.getUserId(uid), reason); 3455 } catch (RemoteException e) { 3456 throw e.rethrowFromSystemServer(); 3457 } 3458 } 3459 3460 /** 3461 * Have the system perform a force stop of everything associated with 3462 * the given application package. All processes that share its uid 3463 * will be killed, all services it has running stopped, all activities 3464 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3465 * broadcast will be sent, so that any of its registered alarms can 3466 * be stopped, notifications removed, etc. 3467 * 3468 * <p>You must hold the permission 3469 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3470 * call this method. 3471 * 3472 * @param packageName The name of the package to be stopped. 3473 * @param userId The user for which the running package is to be stopped. 3474 * 3475 * @hide This is not available to third party applications due to 3476 * it allowing them to break other applications by stopping their 3477 * services, removing their alarms, etc. 3478 */ 3479 public void forceStopPackageAsUser(String packageName, int userId) { 3480 try { 3481 getService().forceStopPackage(packageName, userId); 3482 } catch (RemoteException e) { 3483 throw e.rethrowFromSystemServer(); 3484 } 3485 } 3486 3487 /** 3488 * @see #forceStopPackageAsUser(String, int) 3489 * @hide 3490 */ 3491 @SystemApi 3492 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3493 public void forceStopPackage(String packageName) { 3494 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3495 } 3496 3497 /** 3498 * Get the device configuration attributes. 3499 */ 3500 public ConfigurationInfo getDeviceConfigurationInfo() { 3501 try { 3502 return getService().getDeviceConfigurationInfo(); 3503 } catch (RemoteException e) { 3504 throw e.rethrowFromSystemServer(); 3505 } 3506 } 3507 3508 /** 3509 * Get the preferred density of icons for the launcher. This is used when 3510 * custom drawables are created (e.g., for shortcuts). 3511 * 3512 * @return density in terms of DPI 3513 */ 3514 public int getLauncherLargeIconDensity() { 3515 final Resources res = mContext.getResources(); 3516 final int density = res.getDisplayMetrics().densityDpi; 3517 final int sw = res.getConfiguration().smallestScreenWidthDp; 3518 3519 if (sw < 600) { 3520 // Smaller than approx 7" tablets, use the regular icon size. 3521 return density; 3522 } 3523 3524 switch (density) { 3525 case DisplayMetrics.DENSITY_LOW: 3526 return DisplayMetrics.DENSITY_MEDIUM; 3527 case DisplayMetrics.DENSITY_MEDIUM: 3528 return DisplayMetrics.DENSITY_HIGH; 3529 case DisplayMetrics.DENSITY_TV: 3530 return DisplayMetrics.DENSITY_XHIGH; 3531 case DisplayMetrics.DENSITY_HIGH: 3532 return DisplayMetrics.DENSITY_XHIGH; 3533 case DisplayMetrics.DENSITY_XHIGH: 3534 return DisplayMetrics.DENSITY_XXHIGH; 3535 case DisplayMetrics.DENSITY_XXHIGH: 3536 return DisplayMetrics.DENSITY_XHIGH * 2; 3537 default: 3538 // The density is some abnormal value. Return some other 3539 // abnormal value that is a reasonable scaling of it. 3540 return (int)((density*1.5f)+.5f); 3541 } 3542 } 3543 3544 /** 3545 * Get the preferred launcher icon size. This is used when custom drawables 3546 * are created (e.g., for shortcuts). 3547 * 3548 * @return dimensions of square icons in terms of pixels 3549 */ 3550 public int getLauncherLargeIconSize() { 3551 return getLauncherLargeIconSizeInner(mContext); 3552 } 3553 3554 static int getLauncherLargeIconSizeInner(Context context) { 3555 final Resources res = context.getResources(); 3556 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3557 final int sw = res.getConfiguration().smallestScreenWidthDp; 3558 3559 if (sw < 600) { 3560 // Smaller than approx 7" tablets, use the regular icon size. 3561 return size; 3562 } 3563 3564 final int density = res.getDisplayMetrics().densityDpi; 3565 3566 switch (density) { 3567 case DisplayMetrics.DENSITY_LOW: 3568 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3569 case DisplayMetrics.DENSITY_MEDIUM: 3570 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3571 case DisplayMetrics.DENSITY_TV: 3572 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3573 case DisplayMetrics.DENSITY_HIGH: 3574 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3575 case DisplayMetrics.DENSITY_XHIGH: 3576 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3577 case DisplayMetrics.DENSITY_XXHIGH: 3578 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3579 default: 3580 // The density is some abnormal value. Return some other 3581 // abnormal value that is a reasonable scaling of it. 3582 return (int)((size*1.5f) + .5f); 3583 } 3584 } 3585 3586 /** 3587 * Returns "true" if the user interface is currently being messed with 3588 * by a monkey. 3589 */ 3590 public static boolean isUserAMonkey() { 3591 try { 3592 return getService().isUserAMonkey(); 3593 } catch (RemoteException e) { 3594 throw e.rethrowFromSystemServer(); 3595 } 3596 } 3597 3598 /** 3599 * Returns "true" if device is running in a test harness. 3600 */ 3601 public static boolean isRunningInTestHarness() { 3602 return SystemProperties.getBoolean("ro.test_harness", false); 3603 } 3604 3605 /** 3606 * Returns the launch count of each installed package. 3607 * 3608 * @hide 3609 */ 3610 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3611 try { 3612 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3613 ServiceManager.getService("usagestats")); 3614 if (usageStatsService == null) { 3615 return new HashMap<String, Integer>(); 3616 } 3617 3618 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3619 ActivityThread.currentPackageName()); 3620 if (allPkgUsageStats == null) { 3621 return new HashMap<String, Integer>(); 3622 } 3623 3624 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3625 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3626 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3627 } 3628 3629 return launchCounts; 3630 } catch (RemoteException e) { 3631 Log.w(TAG, "Could not query launch counts", e); 3632 return new HashMap<String, Integer>(); 3633 } 3634 }*/ 3635 3636 /** @hide */ 3637 public static int checkComponentPermission(String permission, int uid, 3638 int owningUid, boolean exported) { 3639 // Root, system server get to do everything. 3640 final int appId = UserHandle.getAppId(uid); 3641 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3642 return PackageManager.PERMISSION_GRANTED; 3643 } 3644 // Isolated processes don't get any permissions. 3645 if (UserHandle.isIsolated(uid)) { 3646 return PackageManager.PERMISSION_DENIED; 3647 } 3648 // If there is a uid that owns whatever is being accessed, it has 3649 // blanket access to it regardless of the permissions it requires. 3650 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3651 return PackageManager.PERMISSION_GRANTED; 3652 } 3653 // If the target is not exported, then nobody else can get to it. 3654 if (!exported) { 3655 /* 3656 RuntimeException here = new RuntimeException("here"); 3657 here.fillInStackTrace(); 3658 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3659 here); 3660 */ 3661 return PackageManager.PERMISSION_DENIED; 3662 } 3663 if (permission == null) { 3664 return PackageManager.PERMISSION_GRANTED; 3665 } 3666 try { 3667 return AppGlobals.getPackageManager() 3668 .checkUidPermission(permission, uid); 3669 } catch (RemoteException e) { 3670 throw e.rethrowFromSystemServer(); 3671 } 3672 } 3673 3674 /** @hide */ 3675 public static int checkUidPermission(String permission, int uid) { 3676 try { 3677 return AppGlobals.getPackageManager() 3678 .checkUidPermission(permission, uid); 3679 } catch (RemoteException e) { 3680 throw e.rethrowFromSystemServer(); 3681 } 3682 } 3683 3684 /** 3685 * @hide 3686 * Helper for dealing with incoming user arguments to system service calls. 3687 * Takes care of checking permissions and converting USER_CURRENT to the 3688 * actual current user. 3689 * 3690 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3691 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3692 * @param userId The user id argument supplied by the caller -- this is the user 3693 * they want to run as. 3694 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3695 * to get a USER_ALL returned and deal with it correctly. If false, 3696 * an exception will be thrown if USER_ALL is supplied. 3697 * @param requireFull If true, the caller must hold 3698 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3699 * different user than their current process; otherwise they must hold 3700 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3701 * @param name Optional textual name of the incoming call; only for generating error messages. 3702 * @param callerPackage Optional package name of caller; only for error messages. 3703 * 3704 * @return Returns the user ID that the call should run as. Will always be a concrete 3705 * user number, unless <var>allowAll</var> is true in which case it could also be 3706 * USER_ALL. 3707 */ 3708 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3709 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3710 if (UserHandle.getUserId(callingUid) == userId) { 3711 return userId; 3712 } 3713 try { 3714 return getService().handleIncomingUser(callingPid, 3715 callingUid, userId, allowAll, requireFull, name, callerPackage); 3716 } catch (RemoteException e) { 3717 throw e.rethrowFromSystemServer(); 3718 } 3719 } 3720 3721 /** 3722 * Gets the userId of the current foreground user. Requires system permissions. 3723 * @hide 3724 */ 3725 @SystemApi 3726 @RequiresPermission(anyOf = { 3727 "android.permission.INTERACT_ACROSS_USERS", 3728 "android.permission.INTERACT_ACROSS_USERS_FULL" 3729 }) 3730 public static int getCurrentUser() { 3731 UserInfo ui; 3732 try { 3733 ui = getService().getCurrentUser(); 3734 return ui != null ? ui.id : 0; 3735 } catch (RemoteException e) { 3736 throw e.rethrowFromSystemServer(); 3737 } 3738 } 3739 3740 /** 3741 * @param userid the user's id. Zero indicates the default user. 3742 * @hide 3743 */ 3744 public boolean switchUser(int userid) { 3745 try { 3746 return getService().switchUser(userid); 3747 } catch (RemoteException e) { 3748 throw e.rethrowFromSystemServer(); 3749 } 3750 } 3751 3752 /** 3753 * Logs out current current foreground user by switching to the system user and stopping the 3754 * user being switched from. 3755 * @hide 3756 */ 3757 public static void logoutCurrentUser() { 3758 int currentUser = ActivityManager.getCurrentUser(); 3759 if (currentUser != UserHandle.USER_SYSTEM) { 3760 try { 3761 getService().switchUser(UserHandle.USER_SYSTEM); 3762 getService().stopUser(currentUser, /* force= */ false, null); 3763 } catch (RemoteException e) { 3764 e.rethrowFromSystemServer(); 3765 } 3766 } 3767 } 3768 3769 /** {@hide} */ 3770 public static final int FLAG_OR_STOPPED = 1 << 0; 3771 /** {@hide} */ 3772 public static final int FLAG_AND_LOCKED = 1 << 1; 3773 /** {@hide} */ 3774 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3775 /** {@hide} */ 3776 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3777 3778 /** 3779 * Return whether the given user is actively running. This means that 3780 * the user is in the "started" state, not "stopped" -- it is currently 3781 * allowed to run code through scheduled alarms, receiving broadcasts, 3782 * etc. A started user may be either the current foreground user or a 3783 * background user; the result here does not distinguish between the two. 3784 * @param userId the user's id. Zero indicates the default user. 3785 * @hide 3786 */ 3787 public boolean isUserRunning(int userId) { 3788 try { 3789 return getService().isUserRunning(userId, 0); 3790 } catch (RemoteException e) { 3791 throw e.rethrowFromSystemServer(); 3792 } 3793 } 3794 3795 /** {@hide} */ 3796 public boolean isVrModePackageEnabled(ComponentName component) { 3797 try { 3798 return getService().isVrModePackageEnabled(component); 3799 } catch (RemoteException e) { 3800 throw e.rethrowFromSystemServer(); 3801 } 3802 } 3803 3804 /** 3805 * Perform a system dump of various state associated with the given application 3806 * package name. This call blocks while the dump is being performed, so should 3807 * not be done on a UI thread. The data will be written to the given file 3808 * descriptor as text. 3809 * @param fd The file descriptor that the dump should be written to. The file 3810 * descriptor is <em>not</em> closed by this function; the caller continues to 3811 * own it. 3812 * @param packageName The name of the package that is to be dumped. 3813 */ 3814 @RequiresPermission(Manifest.permission.DUMP) 3815 public void dumpPackageState(FileDescriptor fd, String packageName) { 3816 dumpPackageStateStatic(fd, packageName); 3817 } 3818 3819 /** 3820 * @hide 3821 */ 3822 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3823 FileOutputStream fout = new FileOutputStream(fd); 3824 PrintWriter pw = new FastPrintWriter(fout); 3825 dumpService(pw, fd, "package", new String[] { packageName }); 3826 pw.println(); 3827 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3828 "-a", "package", packageName }); 3829 pw.println(); 3830 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3831 pw.println(); 3832 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3833 pw.println(); 3834 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3835 pw.println(); 3836 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3837 pw.flush(); 3838 } 3839 3840 /** 3841 * @hide 3842 */ 3843 public static boolean isSystemReady() { 3844 if (!sSystemReady) { 3845 if (ActivityThread.isSystem()) { 3846 sSystemReady = 3847 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3848 } else { 3849 // Since this is being called from outside system server, system should be 3850 // ready by now. 3851 sSystemReady = true; 3852 } 3853 } 3854 return sSystemReady; 3855 } 3856 3857 /** 3858 * @hide 3859 */ 3860 public static void broadcastStickyIntent(Intent intent, int userId) { 3861 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3862 } 3863 3864 /** 3865 * Convenience for sending a sticky broadcast. For internal use only. 3866 * 3867 * @hide 3868 */ 3869 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3870 try { 3871 getService().broadcastIntent( 3872 null, intent, null, null, Activity.RESULT_OK, null, null, 3873 null /*permission*/, appOp, null, false, true, userId); 3874 } catch (RemoteException ex) { 3875 } 3876 } 3877 3878 /** 3879 * @hide 3880 */ 3881 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3882 String tag) { 3883 try { 3884 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3885 sourceUid, sourcePkg, tag); 3886 } catch (RemoteException ex) { 3887 } 3888 } 3889 3890 /** 3891 * @hide 3892 */ 3893 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3894 try { 3895 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3896 } catch (RemoteException ex) { 3897 } 3898 } 3899 3900 /** 3901 * @hide 3902 */ 3903 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3904 try { 3905 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3906 } catch (RemoteException ex) { 3907 } 3908 } 3909 3910 /** 3911 * @hide 3912 */ 3913 public static IActivityManager getService() { 3914 return IActivityManagerSingleton.get(); 3915 } 3916 3917 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3918 new Singleton<IActivityManager>() { 3919 @Override 3920 protected IActivityManager create() { 3921 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3922 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3923 return am; 3924 } 3925 }; 3926 3927 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3928 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3929 IBinder service = ServiceManager.checkService(name); 3930 if (service == null) { 3931 pw.println(" (Service not found)"); 3932 pw.flush(); 3933 return; 3934 } 3935 pw.flush(); 3936 if (service instanceof Binder) { 3937 // If this is a local object, it doesn't make sense to do an async dump with it, 3938 // just directly dump. 3939 try { 3940 service.dump(fd, args); 3941 } catch (Throwable e) { 3942 pw.println("Failure dumping service:"); 3943 e.printStackTrace(pw); 3944 pw.flush(); 3945 } 3946 } else { 3947 // Otherwise, it is remote, do the dump asynchronously to avoid blocking. 3948 TransferPipe tp = null; 3949 try { 3950 pw.flush(); 3951 tp = new TransferPipe(); 3952 tp.setBufferPrefix(" "); 3953 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3954 tp.go(fd, 10000); 3955 } catch (Throwable e) { 3956 if (tp != null) { 3957 tp.kill(); 3958 } 3959 pw.println("Failure dumping service:"); 3960 e.printStackTrace(pw); 3961 } 3962 } 3963 } 3964 3965 /** 3966 * Request that the system start watching for the calling process to exceed a pss 3967 * size as given here. Once called, the system will look for any occasions where it 3968 * sees the associated process with a larger pss size and, when this happens, automatically 3969 * pull a heap dump from it and allow the user to share the data. Note that this request 3970 * continues running even if the process is killed and restarted. To remove the watch, 3971 * use {@link #clearWatchHeapLimit()}. 3972 * 3973 * <p>This API only work if the calling process has been marked as 3974 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3975 * (userdebug or eng) build.</p> 3976 * 3977 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3978 * handle heap limit reports themselves.</p> 3979 * 3980 * @param pssSize The size in bytes to set the limit at. 3981 */ 3982 public void setWatchHeapLimit(long pssSize) { 3983 try { 3984 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3985 mContext.getPackageName()); 3986 } catch (RemoteException e) { 3987 throw e.rethrowFromSystemServer(); 3988 } 3989 } 3990 3991 /** 3992 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3993 * If your package has an activity handling this action, it will be launched with the 3994 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3995 * match the activty must support this action and a MIME type of "*/*". 3996 */ 3997 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3998 3999 /** 4000 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4001 */ 4002 public void clearWatchHeapLimit() { 4003 try { 4004 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4005 } catch (RemoteException e) { 4006 throw e.rethrowFromSystemServer(); 4007 } 4008 } 4009 4010 /** 4011 * Return whether currently in lock task mode. When in this mode 4012 * no new tasks can be created or switched to. 4013 * 4014 * @see Activity#startLockTask() 4015 * 4016 * @deprecated Use {@link #getLockTaskModeState} instead. 4017 */ 4018 @Deprecated 4019 public boolean isInLockTaskMode() { 4020 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4021 } 4022 4023 /** 4024 * Return the current state of task locking. The three possible outcomes 4025 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4026 * and {@link #LOCK_TASK_MODE_PINNED}. 4027 * 4028 * @see Activity#startLockTask() 4029 */ 4030 public int getLockTaskModeState() { 4031 try { 4032 return getService().getLockTaskModeState(); 4033 } catch (RemoteException e) { 4034 throw e.rethrowFromSystemServer(); 4035 } 4036 } 4037 4038 /** 4039 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4040 * thread can be a VR thread in a process at a time, and that thread may be subject to 4041 * restrictions on the amount of time it can run. 4042 * 4043 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4044 * method will return to normal operation, and calling this method will do nothing while 4045 * persistent VR mode is enabled. 4046 * 4047 * To reset the VR thread for an application, a tid of 0 can be passed. 4048 * 4049 * @see android.os.Process#myTid() 4050 * @param tid tid of the VR thread 4051 */ 4052 public static void setVrThread(int tid) { 4053 try { 4054 getService().setVrThread(tid); 4055 } catch (RemoteException e) { 4056 // pass 4057 } 4058 } 4059 4060 /** 4061 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4062 * beyond a single process. Only one thread can be a 4063 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4064 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4065 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4066 * persistent VR thread loses its new scheduling priority; this method must be called again to 4067 * set the persistent thread. 4068 * 4069 * To reset the persistent VR thread, a tid of 0 can be passed. 4070 * 4071 * @see android.os.Process#myTid() 4072 * @param tid tid of the VR thread 4073 * @hide 4074 */ 4075 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4076 public static void setPersistentVrThread(int tid) { 4077 try { 4078 getService().setPersistentVrThread(tid); 4079 } catch (RemoteException e) { 4080 // pass 4081 } 4082 } 4083 4084 /** 4085 * The AppTask allows you to manage your own application's tasks. 4086 * See {@link android.app.ActivityManager#getAppTasks()} 4087 */ 4088 public static class AppTask { 4089 private IAppTask mAppTaskImpl; 4090 4091 /** @hide */ 4092 public AppTask(IAppTask task) { 4093 mAppTaskImpl = task; 4094 } 4095 4096 /** 4097 * Finishes all activities in this task and removes it from the recent tasks list. 4098 */ 4099 public void finishAndRemoveTask() { 4100 try { 4101 mAppTaskImpl.finishAndRemoveTask(); 4102 } catch (RemoteException e) { 4103 throw e.rethrowFromSystemServer(); 4104 } 4105 } 4106 4107 /** 4108 * Get the RecentTaskInfo associated with this task. 4109 * 4110 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4111 */ 4112 public RecentTaskInfo getTaskInfo() { 4113 try { 4114 return mAppTaskImpl.getTaskInfo(); 4115 } catch (RemoteException e) { 4116 throw e.rethrowFromSystemServer(); 4117 } 4118 } 4119 4120 /** 4121 * Bring this task to the foreground. If it contains activities, they will be 4122 * brought to the foreground with it and their instances re-created if needed. 4123 * If it doesn't contain activities, the root activity of the task will be 4124 * re-launched. 4125 */ 4126 public void moveToFront() { 4127 try { 4128 mAppTaskImpl.moveToFront(); 4129 } catch (RemoteException e) { 4130 throw e.rethrowFromSystemServer(); 4131 } 4132 } 4133 4134 /** 4135 * Start an activity in this task. Brings the task to the foreground. If this task 4136 * is not currently active (that is, its id < 0), then a new activity for the given 4137 * Intent will be launched as the root of the task and the task brought to the 4138 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4139 * an activity to launch in a new task, then a new activity for the given Intent will 4140 * be launched on top of the task and the task brought to the foreground. If this 4141 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4142 * or would otherwise be launched in to a new task, then the activity not launched but 4143 * this task be brought to the foreground and a new intent delivered to the top 4144 * activity if appropriate. 4145 * 4146 * <p>In other words, you generally want to use an Intent here that does not specify 4147 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4148 * and let the system do the right thing.</p> 4149 * 4150 * @param intent The Intent describing the new activity to be launched on the task. 4151 * @param options Optional launch options. 4152 * 4153 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4154 */ 4155 public void startActivity(Context context, Intent intent, Bundle options) { 4156 ActivityThread thread = ActivityThread.currentActivityThread(); 4157 thread.getInstrumentation().execStartActivityFromAppTask(context, 4158 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4159 } 4160 4161 /** 4162 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4163 * Intent of this AppTask. 4164 * 4165 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4166 * be set; otherwise, it will be cleared. 4167 */ 4168 public void setExcludeFromRecents(boolean exclude) { 4169 try { 4170 mAppTaskImpl.setExcludeFromRecents(exclude); 4171 } catch (RemoteException e) { 4172 throw e.rethrowFromSystemServer(); 4173 } 4174 } 4175 } 4176} 4177