ActivityManager.java revision f9d4954f30697c7edfee4c56e1ee641a168d4727
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.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.RequiresPermission; 24import android.annotation.SystemApi; 25import android.annotation.SystemService; 26import android.annotation.TestApi; 27import android.content.pm.ActivityInfo; 28import android.content.res.Configuration; 29import android.graphics.Canvas; 30import android.graphics.GraphicBuffer; 31import android.graphics.Matrix; 32import android.graphics.Point; 33import android.os.BatteryStats; 34import android.os.Build; 35import android.os.Build.VERSION_CODES; 36import android.os.IBinder; 37import android.os.ParcelFileDescriptor; 38 39import com.android.internal.app.procstats.ProcessStats; 40import com.android.internal.os.RoSystemProperties; 41import com.android.internal.os.TransferPipe; 42import com.android.internal.util.FastPrintWriter; 43import com.android.server.LocalServices; 44 45import android.content.ComponentName; 46import android.content.Context; 47import android.content.Intent; 48import android.content.UriPermission; 49import android.content.pm.ApplicationInfo; 50import android.content.pm.ConfigurationInfo; 51import android.content.pm.IPackageDataObserver; 52import android.content.pm.PackageManager; 53import android.content.pm.ParceledListSlice; 54import android.content.pm.UserInfo; 55import android.content.res.Resources; 56import android.graphics.Bitmap; 57import android.graphics.Color; 58import android.graphics.Rect; 59import android.os.Bundle; 60import android.os.Debug; 61import android.os.Handler; 62import android.os.Parcel; 63import android.os.Parcelable; 64import android.os.Process; 65import android.os.RemoteException; 66import android.os.ServiceManager; 67import android.os.SystemProperties; 68import android.os.UserHandle; 69import android.text.TextUtils; 70import android.util.ArrayMap; 71import android.util.DisplayMetrics; 72import android.util.Singleton; 73import android.util.Size; 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 /** 140 * System property to enable task snapshots. 141 * @hide 142 */ 143 public final static boolean ENABLE_TASK_SNAPSHOTS; 144 145 static { 146 ENABLE_TASK_SNAPSHOTS = SystemProperties.getBoolean("persist.enable_task_snapshots", true); 147 } 148 149 static final class UidObserver extends IUidObserver.Stub { 150 final OnUidImportanceListener mListener; 151 final Context mContext; 152 153 UidObserver(OnUidImportanceListener listener, Context clientContext) { 154 mListener = listener; 155 mContext = clientContext; 156 } 157 158 @Override 159 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 160 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 161 procState, mContext)); 162 } 163 164 @Override 165 public void onUidGone(int uid, boolean disabled) { 166 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 167 } 168 169 @Override 170 public void onUidActive(int uid) { 171 } 172 173 @Override 174 public void onUidIdle(int uid, boolean disabled) { 175 } 176 } 177 178 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 179 180 /** 181 * Defines acceptable types of bugreports. 182 * @hide 183 */ 184 @Retention(RetentionPolicy.SOURCE) 185 @IntDef({ 186 BUGREPORT_OPTION_FULL, 187 BUGREPORT_OPTION_INTERACTIVE, 188 BUGREPORT_OPTION_REMOTE, 189 BUGREPORT_OPTION_WEAR, 190 BUGREPORT_OPTION_TELEPHONY 191 }) 192 public @interface BugreportMode {} 193 /** 194 * Takes a bugreport without user interference (and hence causing less 195 * interference to the system), but includes all sections. 196 * @hide 197 */ 198 public static final int BUGREPORT_OPTION_FULL = 0; 199 /** 200 * Allows user to monitor progress and enter additional data; might not include all 201 * sections. 202 * @hide 203 */ 204 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 205 /** 206 * Takes a bugreport requested remotely by administrator of the Device Owner app, 207 * not the device's user. 208 * @hide 209 */ 210 public static final int BUGREPORT_OPTION_REMOTE = 2; 211 /** 212 * Takes a bugreport on a wearable device. 213 * @hide 214 */ 215 public static final int BUGREPORT_OPTION_WEAR = 3; 216 217 /** 218 * Takes a lightweight version of bugreport that only includes a few, urgent sections 219 * used to report telephony bugs. 220 * @hide 221 */ 222 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 223 224 /** 225 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 226 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 227 * uninstalled in lieu of the declaring one. The package named here must be 228 * signed with the same certificate as the one declaring the {@code <meta-data>}. 229 */ 230 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 231 232 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 233 // result is properly categorized. 234 235 /** 236 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 237 * @hide 238 */ 239 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 240 241 /** 242 * Result for IActivityManager.startVoiceActivity: active session does not match 243 * the requesting token. 244 * @hide 245 */ 246 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 247 248 /** 249 * Result for IActivityManager.startActivity: trying to start a background user 250 * activity that shouldn't be displayed for all users. 251 * @hide 252 */ 253 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 254 255 /** 256 * Result for IActivityManager.startActivity: trying to start an activity under voice 257 * control when that activity does not support the VOICE category. 258 * @hide 259 */ 260 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 261 262 /** 263 * Result for IActivityManager.startActivity: an error where the 264 * start had to be canceled. 265 * @hide 266 */ 267 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 268 269 /** 270 * Result for IActivityManager.startActivity: an error where the 271 * thing being started is not an activity. 272 * @hide 273 */ 274 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 275 276 /** 277 * Result for IActivityManager.startActivity: an error where the 278 * caller does not have permission to start the activity. 279 * @hide 280 */ 281 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 282 283 /** 284 * Result for IActivityManager.startActivity: an error where the 285 * caller has requested both to forward a result and to receive 286 * a result. 287 * @hide 288 */ 289 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 290 291 /** 292 * Result for IActivityManager.startActivity: an error where the 293 * requested class is not found. 294 * @hide 295 */ 296 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 297 298 /** 299 * Result for IActivityManager.startActivity: an error where the 300 * given Intent could not be resolved to an activity. 301 * @hide 302 */ 303 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 304 305 /** 306 * Result for IActivityManager.startAssistantActivity: active session is currently hidden. 307 * @hide 308 */ 309 public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; 310 311 /** 312 * Result for IActivityManager.startAssistantActivity: active session does not match 313 * the requesting token. 314 * @hide 315 */ 316 public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; 317 318 /** 319 * Result for IActivityManaqer.startActivity: the activity was started 320 * successfully as normal. 321 * @hide 322 */ 323 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 324 325 /** 326 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 327 * be executed if it is the recipient, and that is indeed the case. 328 * @hide 329 */ 330 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 331 332 /** 333 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 334 * a task was simply brought to the foreground. 335 * @hide 336 */ 337 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 338 339 /** 340 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 341 * the given Intent was given to the existing top activity. 342 * @hide 343 */ 344 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 345 346 /** 347 * Result for IActivityManaqer.startActivity: request was canceled because 348 * app switches are temporarily canceled to ensure the user's last request 349 * (such as pressing home) is performed. 350 * @hide 351 */ 352 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 353 354 /** 355 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 356 * while in Lock Task Mode. 357 * @hide 358 */ 359 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 360 FIRST_START_NON_FATAL_ERROR_CODE + 1; 361 362 /** 363 * Result for IActivityManaqer.startActivity: a new activity start was aborted. Never returned 364 * externally. 365 * @hide 366 */ 367 public static final int START_ABORTED = FIRST_START_NON_FATAL_ERROR_CODE + 2; 368 369 /** 370 * Flag for IActivityManaqer.startActivity: do special start mode where 371 * a new activity is launched only if it is needed. 372 * @hide 373 */ 374 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 375 376 /** 377 * Flag for IActivityManaqer.startActivity: launch the app for 378 * debugging. 379 * @hide 380 */ 381 public static final int START_FLAG_DEBUG = 1<<1; 382 383 /** 384 * Flag for IActivityManaqer.startActivity: launch the app for 385 * allocation tracking. 386 * @hide 387 */ 388 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 389 390 /** 391 * Flag for IActivityManaqer.startActivity: launch the app with 392 * native debugging support. 393 * @hide 394 */ 395 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 396 397 /** 398 * Result for IActivityManaqer.broadcastIntent: success! 399 * @hide 400 */ 401 public static final int BROADCAST_SUCCESS = 0; 402 403 /** 404 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 405 * a sticky intent without appropriate permission. 406 * @hide 407 */ 408 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 409 410 /** 411 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 412 * to a stopped user. Fail. 413 * @hide 414 */ 415 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 416 417 /** 418 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 419 * for a sendBroadcast operation. 420 * @hide 421 */ 422 public static final int INTENT_SENDER_BROADCAST = 1; 423 424 /** 425 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 426 * for a startActivity operation. 427 * @hide 428 */ 429 public static final int INTENT_SENDER_ACTIVITY = 2; 430 431 /** 432 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 433 * for an activity result operation. 434 * @hide 435 */ 436 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 437 438 /** 439 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 440 * for a startService operation. 441 * @hide 442 */ 443 public static final int INTENT_SENDER_SERVICE = 4; 444 445 /** 446 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 447 * for a startForegroundService operation. 448 * @hide 449 */ 450 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 451 452 /** @hide User operation call: success! */ 453 public static final int USER_OP_SUCCESS = 0; 454 455 /** @hide User operation call: given user id is not known. */ 456 public static final int USER_OP_UNKNOWN_USER = -1; 457 458 /** @hide User operation call: given user id is the current user, can't be stopped. */ 459 public static final int USER_OP_IS_CURRENT = -2; 460 461 /** @hide User operation call: system user can't be stopped. */ 462 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 463 464 /** @hide User operation call: one of related users cannot be stopped. */ 465 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 466 467 /** @hide Not a real process state. */ 468 public static final int PROCESS_STATE_UNKNOWN = -1; 469 470 /** @hide Process is a persistent system process. */ 471 public static final int PROCESS_STATE_PERSISTENT = 0; 472 473 /** @hide Process is a persistent system process and is doing UI. */ 474 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 475 476 /** @hide Process is hosting the current top activities. Note that this covers 477 * all activities that are visible to the user. */ 478 public static final int PROCESS_STATE_TOP = 2; 479 480 /** @hide Process is hosting a foreground service due to a system binding. */ 481 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 482 483 /** @hide Process is hosting a foreground service. */ 484 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 485 486 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 487 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 488 489 /** @hide Process is important to the user, and something they are aware of. */ 490 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 491 492 /** @hide Process is important to the user, but not something they are aware of. */ 493 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 494 495 /** @hide Process is in the background transient so we will try to keep running. */ 496 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 497 498 /** @hide Process is in the background running a backup/restore operation. */ 499 public static final int PROCESS_STATE_BACKUP = 9; 500 501 /** @hide Process is in the background, but it can't restore its state so we want 502 * to try to avoid killing it. */ 503 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 504 505 /** @hide Process is in the background running a service. Unlike oom_adj, this level 506 * is used for both the normal running in background state and the executing 507 * operations state. */ 508 public static final int PROCESS_STATE_SERVICE = 11; 509 510 /** @hide Process is in the background running a receiver. Note that from the 511 * perspective of oom_adj receivers run at a higher foreground level, but for our 512 * prioritization here that is not necessary and putting them below services means 513 * many fewer changes in some process states as they receive broadcasts. */ 514 public static final int PROCESS_STATE_RECEIVER = 12; 515 516 /** @hide Process is in the background but hosts the home activity. */ 517 public static final int PROCESS_STATE_HOME = 13; 518 519 /** @hide Process is in the background but hosts the last shown activity. */ 520 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 521 522 /** @hide Process is being cached for later use and contains activities. */ 523 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 524 525 /** @hide Process is being cached for later use and is a client of another cached 526 * process that contains activities. */ 527 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 528 529 /** @hide Process is being cached for later use and is empty. */ 530 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 531 532 /** @hide Process does not exist. */ 533 public static final int PROCESS_STATE_NONEXISTENT = 18; 534 535 /** @hide The lowest process state number */ 536 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 537 538 /** @hide The highest process state number */ 539 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 540 541 /** @hide Should this process state be considered a background state? */ 542 public static final boolean isProcStateBackground(int procState) { 543 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 544 } 545 546 /** @hide requestType for assist context: only basic information. */ 547 public static final int ASSIST_CONTEXT_BASIC = 0; 548 549 /** @hide requestType for assist context: generate full AssistStructure. */ 550 public static final int ASSIST_CONTEXT_FULL = 1; 551 552 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 553 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 554 555 /** @hide Flag for registerUidObserver: report changes in process state. */ 556 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 557 558 /** @hide Flag for registerUidObserver: report uid gone. */ 559 public static final int UID_OBSERVER_GONE = 1<<1; 560 561 /** @hide Flag for registerUidObserver: report uid has become idle. */ 562 public static final int UID_OBSERVER_IDLE = 1<<2; 563 564 /** @hide Flag for registerUidObserver: report uid has become active. */ 565 public static final int UID_OBSERVER_ACTIVE = 1<<3; 566 567 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 568 public static final int APP_START_MODE_NORMAL = 0; 569 570 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 571 public static final int APP_START_MODE_DELAYED = 1; 572 573 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 574 * rigid errors (throwing exception). */ 575 public static final int APP_START_MODE_DELAYED_RIGID = 2; 576 577 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 578 * launches; this is the mode for ephemeral apps. */ 579 public static final int APP_START_MODE_DISABLED = 3; 580 581 /** 582 * Lock task mode is not active. 583 */ 584 public static final int LOCK_TASK_MODE_NONE = 0; 585 586 /** 587 * Full lock task mode is active. 588 */ 589 public static final int LOCK_TASK_MODE_LOCKED = 1; 590 591 /** 592 * App pinning mode is active. 593 */ 594 public static final int LOCK_TASK_MODE_PINNED = 2; 595 596 Point mAppTaskThumbnailSize; 597 598 /*package*/ ActivityManager(Context context, Handler handler) { 599 mContext = context; 600 } 601 602 /** 603 * Returns whether the launch was successful. 604 * @hide 605 */ 606 public static final boolean isStartResultSuccessful(int result) { 607 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 608 } 609 610 /** 611 * Returns whether the launch result was a fatal error. 612 * @hide 613 */ 614 public static final boolean isStartResultFatalError(int result) { 615 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 616 } 617 618 /** 619 * Screen compatibility mode: the application most always run in 620 * compatibility mode. 621 * @hide 622 */ 623 public static final int COMPAT_MODE_ALWAYS = -1; 624 625 /** 626 * Screen compatibility mode: the application can never run in 627 * compatibility mode. 628 * @hide 629 */ 630 public static final int COMPAT_MODE_NEVER = -2; 631 632 /** 633 * Screen compatibility mode: unknown. 634 * @hide 635 */ 636 public static final int COMPAT_MODE_UNKNOWN = -3; 637 638 /** 639 * Screen compatibility mode: the application currently has compatibility 640 * mode disabled. 641 * @hide 642 */ 643 public static final int COMPAT_MODE_DISABLED = 0; 644 645 /** 646 * Screen compatibility mode: the application currently has compatibility 647 * mode enabled. 648 * @hide 649 */ 650 public static final int COMPAT_MODE_ENABLED = 1; 651 652 /** 653 * Screen compatibility mode: request to toggle the application's 654 * compatibility mode. 655 * @hide 656 */ 657 public static final int COMPAT_MODE_TOGGLE = 2; 658 659 /** @hide */ 660 public static class StackId { 661 /** Invalid stack ID. */ 662 public static final int INVALID_STACK_ID = -1; 663 664 /** First static stack ID. */ 665 public static final int FIRST_STATIC_STACK_ID = 0; 666 667 /** Home activity stack ID. */ 668 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 669 670 /** ID of stack where fullscreen activities are normally launched into. */ 671 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 672 673 /** ID of stack where freeform/resized activities are normally launched into. */ 674 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 675 676 /** ID of stack that occupies a dedicated region of the screen. */ 677 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 678 679 /** ID of stack that always on top (always visible) when it exist. */ 680 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 681 682 /** ID of stack that contains the Recents activity. */ 683 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 684 685 /** ID of stack that contains activities launched by the assistant. */ 686 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 687 688 /** Last static stack stack ID. */ 689 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 690 691 /** Start of ID range used by stacks that are created dynamically. */ 692 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 693 694 public static boolean isStaticStack(int stackId) { 695 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 696 } 697 698 public static boolean isDynamicStack(int stackId) { 699 return stackId >= FIRST_DYNAMIC_STACK_ID; 700 } 701 702 /** 703 * Returns true if the activities contained in the input stack display a shadow around 704 * their border. 705 */ 706 public static boolean hasWindowShadow(int stackId) { 707 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 708 } 709 710 /** 711 * Returns true if the activities contained in the input stack display a decor view. 712 */ 713 public static boolean hasWindowDecor(int stackId) { 714 return stackId == FREEFORM_WORKSPACE_STACK_ID; 715 } 716 717 /** 718 * Returns true if the tasks contained in the stack can be resized independently of the 719 * stack. 720 */ 721 public static boolean isTaskResizeAllowed(int stackId) { 722 return stackId == FREEFORM_WORKSPACE_STACK_ID; 723 } 724 725 /** Returns true if the task bounds should persist across power cycles. */ 726 public static boolean persistTaskBounds(int stackId) { 727 return stackId == FREEFORM_WORKSPACE_STACK_ID; 728 } 729 730 /** 731 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 732 */ 733 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 734 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 735 } 736 737 /** 738 * Returns true if we try to maintain focus in the current stack when the top activity 739 * finishes. 740 */ 741 public static boolean keepFocusInStackIfPossible(int stackId) { 742 return stackId == FREEFORM_WORKSPACE_STACK_ID 743 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 744 } 745 746 /** 747 * Returns true if Stack size is affected by the docked stack changing size. 748 */ 749 public static boolean isResizeableByDockedStack(int stackId) { 750 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 751 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 752 } 753 754 /** 755 * Returns true if the size of tasks in the input stack are affected by the docked stack 756 * changing size. 757 */ 758 public static boolean isTaskResizeableByDockedStack(int stackId) { 759 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 760 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 761 && stackId != ASSISTANT_STACK_ID; 762 } 763 764 /** 765 * Returns true if the input stack is affected by drag resizing. 766 */ 767 public static boolean isStackAffectedByDragResizing(int stackId) { 768 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 769 && stackId != ASSISTANT_STACK_ID; 770 } 771 772 /** 773 * Returns true if the windows of tasks being moved to the target stack from the source 774 * stack should be replaced, meaning that window manager will keep the old window around 775 * until the new is ready. 776 */ 777 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 778 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 779 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 780 } 781 782 /** 783 * Return whether a stackId is a stack containing floating windows. Floating windows 784 * are laid out differently as they are allowed to extend past the display bounds 785 * without overscan insets. 786 */ 787 public static boolean tasksAreFloating(int stackId) { 788 return stackId == FREEFORM_WORKSPACE_STACK_ID 789 || stackId == PINNED_STACK_ID; 790 } 791 792 /** 793 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 794 * are generally fullscreen stacks. 795 */ 796 public static boolean isBackdropToTranslucentActivity(int stackId) { 797 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 798 || stackId == ASSISTANT_STACK_ID; 799 } 800 801 /** 802 * Returns true if animation specs should be constructed for app transition that moves 803 * the task to the specified stack. 804 */ 805 public static boolean useAnimationSpecForAppTransition(int stackId) { 806 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 807 // reboots. 808 return stackId == FREEFORM_WORKSPACE_STACK_ID 809 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 810 || stackId == ASSISTANT_STACK_ID 811 || stackId == DOCKED_STACK_ID 812 || stackId == INVALID_STACK_ID; 813 } 814 815 /** 816 * Returns true if the windows in the stack can receive input keys. 817 */ 818 public static boolean canReceiveKeys(int stackId) { 819 return stackId != PINNED_STACK_ID; 820 } 821 822 /** 823 * Returns true if the stack can be visible above lockscreen. 824 */ 825 public static boolean isAllowedOverLockscreen(int stackId) { 826 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 827 stackId == ASSISTANT_STACK_ID; 828 } 829 830 /** 831 * Returns true if activities from stasks in the given {@param stackId} are allowed to 832 * enter picture-in-picture. 833 */ 834 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 835 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 836 stackId != RECENTS_STACK_ID; 837 } 838 839 public static boolean isAlwaysOnTop(int stackId) { 840 return stackId == PINNED_STACK_ID; 841 } 842 843 /** 844 * Returns true if the top task in the task is allowed to return home when finished and 845 * there are other tasks in the stack. 846 */ 847 public static boolean allowTopTaskToReturnHome(int stackId) { 848 return stackId != PINNED_STACK_ID; 849 } 850 851 /** 852 * Returns true if the stack should be resized to match the bounds specified by 853 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 854 */ 855 public static boolean resizeStackWithLaunchBounds(int stackId) { 856 return stackId == PINNED_STACK_ID; 857 } 858 859 /** 860 * Returns true if any visible windows belonging to apps in this stack should be kept on 861 * screen when the app is killed due to something like the low memory killer. 862 */ 863 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 864 return stackId != PINNED_STACK_ID; 865 } 866 867 /** 868 * Returns true if the backdrop on the client side should match the frame of the window. 869 * Returns false, if the backdrop should be fullscreen. 870 */ 871 public static boolean useWindowFrameForBackdrop(int stackId) { 872 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 873 } 874 875 /** 876 * Returns true if a window from the specified stack with {@param stackId} are normally 877 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 878 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 879 * etc. 880 */ 881 public static boolean normallyFullscreenWindows(int stackId) { 882 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 883 && stackId != DOCKED_STACK_ID; 884 } 885 886 /** 887 * Returns true if the input stack id should only be present on a device that supports 888 * multi-window mode. 889 * @see android.app.ActivityManager#supportsMultiWindow 890 */ 891 public static boolean isMultiWindowStack(int stackId) { 892 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 893 || stackId == DOCKED_STACK_ID; 894 } 895 896 /** 897 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 898 */ 899 public static boolean isHomeOrRecentsStack(int stackId) { 900 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 901 } 902 903 /** 904 * Returns true if activities contained in this stack can request visible behind by 905 * calling {@link Activity#requestVisibleBehind}. 906 * 907 * @deprecated This method's functionality is no longer supported as of 908 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 909 */ 910 @Deprecated 911 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 912 return stackId == FULLSCREEN_WORKSPACE_STACK_ID || 913 stackId == ASSISTANT_STACK_ID; 914 } 915 916 /** 917 * Returns true if this stack may be scaled without resizing, and windows within may need 918 * to be configured as such. 919 */ 920 public static boolean windowsAreScaleable(int stackId) { 921 return stackId == PINNED_STACK_ID; 922 } 923 924 /** 925 * Returns true if windows in this stack should be given move animations by default. 926 */ 927 public static boolean hasMovementAnimations(int stackId) { 928 return stackId != PINNED_STACK_ID; 929 } 930 931 /** Returns true if the input stack and its content can affect the device orientation. */ 932 public static boolean canSpecifyOrientation(int stackId) { 933 return stackId == HOME_STACK_ID 934 || stackId == RECENTS_STACK_ID 935 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 936 || stackId == ASSISTANT_STACK_ID 937 || isDynamicStack(stackId); 938 } 939 } 940 941 /** 942 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 943 * specifies the position of the created docked stack at the top half of the screen if 944 * in portrait mode or at the left half of the screen if in landscape mode. 945 * @hide 946 */ 947 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 948 949 /** 950 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 951 * specifies the position of the created docked stack at the bottom half of the screen if 952 * in portrait mode or at the right half of the screen if in landscape mode. 953 * @hide 954 */ 955 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 956 957 /** 958 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 959 * that the resize doesn't need to preserve the window, and can be skipped if bounds 960 * is unchanged. This mode is used by window manager in most cases. 961 * @hide 962 */ 963 public static final int RESIZE_MODE_SYSTEM = 0; 964 965 /** 966 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 967 * that the resize should preserve the window if possible. 968 * @hide 969 */ 970 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 971 972 /** 973 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 974 * that the resize should be performed even if the bounds appears unchanged. 975 * @hide 976 */ 977 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 978 979 /** 980 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 981 * manager during a screen rotation. 982 * @hide 983 */ 984 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 985 986 /** 987 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 988 * resize is due to a drag action. 989 * @hide 990 */ 991 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 992 993 /** 994 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 995 * that the resize should preserve the window if possible, and should not be skipped 996 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 997 * is ending. 998 * @hide 999 */ 1000 public static final int RESIZE_MODE_USER_FORCED = 1001 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 1002 1003 /** @hide */ 1004 public int getFrontActivityScreenCompatMode() { 1005 try { 1006 return getService().getFrontActivityScreenCompatMode(); 1007 } catch (RemoteException e) { 1008 throw e.rethrowFromSystemServer(); 1009 } 1010 } 1011 1012 /** @hide */ 1013 public void setFrontActivityScreenCompatMode(int mode) { 1014 try { 1015 getService().setFrontActivityScreenCompatMode(mode); 1016 } catch (RemoteException e) { 1017 throw e.rethrowFromSystemServer(); 1018 } 1019 } 1020 1021 /** @hide */ 1022 public int getPackageScreenCompatMode(String packageName) { 1023 try { 1024 return getService().getPackageScreenCompatMode(packageName); 1025 } catch (RemoteException e) { 1026 throw e.rethrowFromSystemServer(); 1027 } 1028 } 1029 1030 /** @hide */ 1031 public void setPackageScreenCompatMode(String packageName, int mode) { 1032 try { 1033 getService().setPackageScreenCompatMode(packageName, mode); 1034 } catch (RemoteException e) { 1035 throw e.rethrowFromSystemServer(); 1036 } 1037 } 1038 1039 /** @hide */ 1040 public boolean getPackageAskScreenCompat(String packageName) { 1041 try { 1042 return getService().getPackageAskScreenCompat(packageName); 1043 } catch (RemoteException e) { 1044 throw e.rethrowFromSystemServer(); 1045 } 1046 } 1047 1048 /** @hide */ 1049 public void setPackageAskScreenCompat(String packageName, boolean ask) { 1050 try { 1051 getService().setPackageAskScreenCompat(packageName, ask); 1052 } catch (RemoteException e) { 1053 throw e.rethrowFromSystemServer(); 1054 } 1055 } 1056 1057 /** 1058 * Return the approximate per-application memory class of the current 1059 * device. This gives you an idea of how hard a memory limit you should 1060 * impose on your application to let the overall system work best. The 1061 * returned value is in megabytes; the baseline Android memory class is 1062 * 16 (which happens to be the Java heap limit of those devices); some 1063 * device with more memory may return 24 or even higher numbers. 1064 */ 1065 public int getMemoryClass() { 1066 return staticGetMemoryClass(); 1067 } 1068 1069 /** @hide */ 1070 static public int staticGetMemoryClass() { 1071 // Really brain dead right now -- just take this from the configured 1072 // vm heap size, and assume it is in megabytes and thus ends with "m". 1073 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1074 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1075 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1076 } 1077 return staticGetLargeMemoryClass(); 1078 } 1079 1080 /** 1081 * Return the approximate per-application memory class of the current 1082 * device when an application is running with a large heap. This is the 1083 * space available for memory-intensive applications; most applications 1084 * should not need this amount of memory, and should instead stay with the 1085 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1086 * This may be the same size as {@link #getMemoryClass()} on memory 1087 * constrained devices, or it may be significantly larger on devices with 1088 * a large amount of available RAM. 1089 * 1090 * <p>The is the size of the application's Dalvik heap if it has 1091 * specified <code>android:largeHeap="true"</code> in its manifest. 1092 */ 1093 public int getLargeMemoryClass() { 1094 return staticGetLargeMemoryClass(); 1095 } 1096 1097 /** @hide */ 1098 static public int staticGetLargeMemoryClass() { 1099 // Really brain dead right now -- just take this from the configured 1100 // vm heap size, and assume it is in megabytes and thus ends with "m". 1101 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1102 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1103 } 1104 1105 /** 1106 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1107 * is ultimately up to the device configuration, but currently it generally means 1108 * something in the class of a 512MB device with about a 800x480 or less screen. 1109 * This is mostly intended to be used by apps to determine whether they should turn 1110 * off certain features that require more RAM. 1111 */ 1112 public boolean isLowRamDevice() { 1113 return isLowRamDeviceStatic(); 1114 } 1115 1116 /** @hide */ 1117 public static boolean isLowRamDeviceStatic() { 1118 return RoSystemProperties.CONFIG_LOW_RAM; 1119 } 1120 1121 /** 1122 * Used by persistent processes to determine if they are running on a 1123 * higher-end device so should be okay using hardware drawing acceleration 1124 * (which tends to consume a lot more RAM). 1125 * @hide 1126 */ 1127 static public boolean isHighEndGfx() { 1128 return !isLowRamDeviceStatic() && 1129 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1130 } 1131 1132 /** 1133 * Return the maximum number of recents entries that we will maintain and show. 1134 * @hide 1135 */ 1136 static public int getMaxRecentTasksStatic() { 1137 if (gMaxRecentTasks < 0) { 1138 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1139 } 1140 return gMaxRecentTasks; 1141 } 1142 1143 /** 1144 * Return the default limit on the number of recents that an app can make. 1145 * @hide 1146 */ 1147 static public int getDefaultAppRecentsLimitStatic() { 1148 return getMaxRecentTasksStatic() / 6; 1149 } 1150 1151 /** 1152 * Return the maximum limit on the number of recents that an app can make. 1153 * @hide 1154 */ 1155 static public int getMaxAppRecentsLimitStatic() { 1156 return getMaxRecentTasksStatic() / 2; 1157 } 1158 1159 /** 1160 * Returns true if the system supports at least one form of multi-window. 1161 * E.g. freeform, split-screen, picture-in-picture. 1162 * @hide 1163 */ 1164 static public boolean supportsMultiWindow(Context context) { 1165 // On watches, multi-window is used to present essential system UI, and thus it must be 1166 // supported regardless of device memory characteristics. 1167 boolean isWatch = context.getPackageManager().hasSystemFeature( 1168 PackageManager.FEATURE_WATCH); 1169 return (!isLowRamDeviceStatic() || isWatch) 1170 && Resources.getSystem().getBoolean( 1171 com.android.internal.R.bool.config_supportsMultiWindow); 1172 } 1173 1174 /** 1175 * Returns true if the system supports split screen multi-window. 1176 * @hide 1177 */ 1178 static public boolean supportsSplitScreenMultiWindow(Context context) { 1179 return supportsMultiWindow(context) 1180 && Resources.getSystem().getBoolean( 1181 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1182 } 1183 1184 /** @removed */ 1185 @Deprecated 1186 public static int getMaxNumPictureInPictureActions() { 1187 return 3; 1188 } 1189 1190 /** 1191 * Information you can set and retrieve about the current activity within the recent task list. 1192 */ 1193 public static class TaskDescription implements Parcelable { 1194 /** @hide */ 1195 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1196 private static final String ATTR_TASKDESCRIPTIONLABEL = 1197 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1198 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1199 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1200 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1201 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1202 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1203 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1204 1205 private String mLabel; 1206 private Bitmap mIcon; 1207 private String mIconFilename; 1208 private int mColorPrimary; 1209 private int mColorBackground; 1210 private int mStatusBarColor; 1211 private int mNavigationBarColor; 1212 1213 /** 1214 * Creates the TaskDescription to the specified values. 1215 * 1216 * @param label A label and description of the current state of this task. 1217 * @param icon An icon that represents the current state of this task. 1218 * @param colorPrimary A color to override the theme's primary color. This color must be 1219 * opaque. 1220 */ 1221 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1222 this(label, icon, null, colorPrimary, 0, 0, 0); 1223 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1224 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1225 } 1226 } 1227 1228 /** 1229 * Creates the TaskDescription to the specified values. 1230 * 1231 * @param label A label and description of the current state of this activity. 1232 * @param icon An icon that represents the current state of this activity. 1233 */ 1234 public TaskDescription(String label, Bitmap icon) { 1235 this(label, icon, null, 0, 0, 0, 0); 1236 } 1237 1238 /** 1239 * Creates the TaskDescription to the specified values. 1240 * 1241 * @param label A label and description of the current state of this activity. 1242 */ 1243 public TaskDescription(String label) { 1244 this(label, null, null, 0, 0, 0, 0); 1245 } 1246 1247 /** 1248 * Creates an empty TaskDescription. 1249 */ 1250 public TaskDescription() { 1251 this(null, null, null, 0, 0, 0, 0); 1252 } 1253 1254 /** @hide */ 1255 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1256 int colorBackground, int statusBarColor, int navigationBarColor) { 1257 mLabel = label; 1258 mIcon = icon; 1259 mIconFilename = iconFilename; 1260 mColorPrimary = colorPrimary; 1261 mColorBackground = colorBackground; 1262 mStatusBarColor = statusBarColor; 1263 mNavigationBarColor = navigationBarColor; 1264 } 1265 1266 /** 1267 * Creates a copy of another TaskDescription. 1268 */ 1269 public TaskDescription(TaskDescription td) { 1270 copyFrom(td); 1271 } 1272 1273 /** 1274 * Copies this the values from another TaskDescription. 1275 * @hide 1276 */ 1277 public void copyFrom(TaskDescription other) { 1278 mLabel = other.mLabel; 1279 mIcon = other.mIcon; 1280 mIconFilename = other.mIconFilename; 1281 mColorPrimary = other.mColorPrimary; 1282 mColorBackground = other.mColorBackground; 1283 mStatusBarColor = other.mStatusBarColor; 1284 mNavigationBarColor = other.mNavigationBarColor; 1285 } 1286 1287 /** 1288 * Copies this the values from another TaskDescription, but preserves the hidden fields 1289 * if they weren't set on {@code other} 1290 * @hide 1291 */ 1292 public void copyFromPreserveHiddenFields(TaskDescription other) { 1293 mLabel = other.mLabel; 1294 mIcon = other.mIcon; 1295 mIconFilename = other.mIconFilename; 1296 mColorPrimary = other.mColorPrimary; 1297 if (other.mColorBackground != 0) { 1298 mColorBackground = other.mColorBackground; 1299 } 1300 if (other.mStatusBarColor != 0) { 1301 mStatusBarColor = other.mStatusBarColor; 1302 } 1303 if (other.mNavigationBarColor != 0) { 1304 mNavigationBarColor = other.mNavigationBarColor; 1305 } 1306 } 1307 1308 private TaskDescription(Parcel source) { 1309 readFromParcel(source); 1310 } 1311 1312 /** 1313 * Sets the label for this task description. 1314 * @hide 1315 */ 1316 public void setLabel(String label) { 1317 mLabel = label; 1318 } 1319 1320 /** 1321 * Sets the primary color for this task description. 1322 * @hide 1323 */ 1324 public void setPrimaryColor(int primaryColor) { 1325 // Ensure that the given color is valid 1326 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1327 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1328 } 1329 mColorPrimary = primaryColor; 1330 } 1331 1332 /** 1333 * Sets the background color for this task description. 1334 * @hide 1335 */ 1336 public void setBackgroundColor(int backgroundColor) { 1337 // Ensure that the given color is valid 1338 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1339 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1340 } 1341 mColorBackground = backgroundColor; 1342 } 1343 1344 /** 1345 * @hide 1346 */ 1347 public void setStatusBarColor(int statusBarColor) { 1348 mStatusBarColor = statusBarColor; 1349 } 1350 1351 /** 1352 * @hide 1353 */ 1354 public void setNavigationBarColor(int navigationBarColor) { 1355 mNavigationBarColor = navigationBarColor; 1356 } 1357 1358 /** 1359 * Sets the icon for this task description. 1360 * @hide 1361 */ 1362 public void setIcon(Bitmap icon) { 1363 mIcon = icon; 1364 } 1365 1366 /** 1367 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1368 * bitmap. 1369 * @hide 1370 */ 1371 public void setIconFilename(String iconFilename) { 1372 mIconFilename = iconFilename; 1373 mIcon = null; 1374 } 1375 1376 /** 1377 * @return The label and description of the current state of this task. 1378 */ 1379 public String getLabel() { 1380 return mLabel; 1381 } 1382 1383 /** 1384 * @return The icon that represents the current state of this task. 1385 */ 1386 public Bitmap getIcon() { 1387 if (mIcon != null) { 1388 return mIcon; 1389 } 1390 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1391 } 1392 1393 /** @hide */ 1394 public String getIconFilename() { 1395 return mIconFilename; 1396 } 1397 1398 /** @hide */ 1399 public Bitmap getInMemoryIcon() { 1400 return mIcon; 1401 } 1402 1403 /** @hide */ 1404 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1405 if (iconFilename != null) { 1406 try { 1407 return getService().getTaskDescriptionIcon(iconFilename, 1408 userId); 1409 } catch (RemoteException e) { 1410 throw e.rethrowFromSystemServer(); 1411 } 1412 } 1413 return null; 1414 } 1415 1416 /** 1417 * @return The color override on the theme's primary color. 1418 */ 1419 public int getPrimaryColor() { 1420 return mColorPrimary; 1421 } 1422 1423 /** 1424 * @return The background color. 1425 * @hide 1426 */ 1427 public int getBackgroundColor() { 1428 return mColorBackground; 1429 } 1430 1431 /** 1432 * @hide 1433 */ 1434 public int getStatusBarColor() { 1435 return mStatusBarColor; 1436 } 1437 1438 /** 1439 * @hide 1440 */ 1441 public int getNavigationBarColor() { 1442 return mNavigationBarColor; 1443 } 1444 1445 /** @hide */ 1446 public void saveToXml(XmlSerializer out) throws IOException { 1447 if (mLabel != null) { 1448 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1449 } 1450 if (mColorPrimary != 0) { 1451 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1452 Integer.toHexString(mColorPrimary)); 1453 } 1454 if (mColorBackground != 0) { 1455 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1456 Integer.toHexString(mColorBackground)); 1457 } 1458 if (mIconFilename != null) { 1459 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1460 } 1461 } 1462 1463 /** @hide */ 1464 public void restoreFromXml(String attrName, String attrValue) { 1465 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1466 setLabel(attrValue); 1467 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1468 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1469 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1470 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1471 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1472 setIconFilename(attrValue); 1473 } 1474 } 1475 1476 @Override 1477 public int describeContents() { 1478 return 0; 1479 } 1480 1481 @Override 1482 public void writeToParcel(Parcel dest, int flags) { 1483 if (mLabel == null) { 1484 dest.writeInt(0); 1485 } else { 1486 dest.writeInt(1); 1487 dest.writeString(mLabel); 1488 } 1489 if (mIcon == null) { 1490 dest.writeInt(0); 1491 } else { 1492 dest.writeInt(1); 1493 mIcon.writeToParcel(dest, 0); 1494 } 1495 dest.writeInt(mColorPrimary); 1496 dest.writeInt(mColorBackground); 1497 dest.writeInt(mStatusBarColor); 1498 dest.writeInt(mNavigationBarColor); 1499 if (mIconFilename == null) { 1500 dest.writeInt(0); 1501 } else { 1502 dest.writeInt(1); 1503 dest.writeString(mIconFilename); 1504 } 1505 } 1506 1507 public void readFromParcel(Parcel source) { 1508 mLabel = source.readInt() > 0 ? source.readString() : null; 1509 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1510 mColorPrimary = source.readInt(); 1511 mColorBackground = source.readInt(); 1512 mStatusBarColor = source.readInt(); 1513 mNavigationBarColor = source.readInt(); 1514 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1515 } 1516 1517 public static final Creator<TaskDescription> CREATOR 1518 = new Creator<TaskDescription>() { 1519 public TaskDescription createFromParcel(Parcel source) { 1520 return new TaskDescription(source); 1521 } 1522 public TaskDescription[] newArray(int size) { 1523 return new TaskDescription[size]; 1524 } 1525 }; 1526 1527 @Override 1528 public String toString() { 1529 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1530 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1531 " colorBackground: " + mColorBackground + 1532 " statusBarColor: " + mColorBackground + 1533 " navigationBarColor: " + mNavigationBarColor; 1534 } 1535 } 1536 1537 /** 1538 * Information you can retrieve about tasks that the user has most recently 1539 * started or visited. 1540 */ 1541 public static class RecentTaskInfo implements Parcelable { 1542 /** 1543 * If this task is currently running, this is the identifier for it. 1544 * If it is not running, this will be -1. 1545 */ 1546 public int id; 1547 1548 /** 1549 * The true identifier of this task, valid even if it is not running. 1550 */ 1551 public int persistentId; 1552 1553 /** 1554 * The original Intent used to launch the task. You can use this 1555 * Intent to re-launch the task (if it is no longer running) or bring 1556 * the current task to the front. 1557 */ 1558 public Intent baseIntent; 1559 1560 /** 1561 * If this task was started from an alias, this is the actual 1562 * activity component that was initially started; the component of 1563 * the baseIntent in this case is the name of the actual activity 1564 * implementation that the alias referred to. Otherwise, this is null. 1565 */ 1566 public ComponentName origActivity; 1567 1568 /** 1569 * The actual activity component that started the task. 1570 * @hide 1571 */ 1572 @Nullable 1573 public ComponentName realActivity; 1574 1575 /** 1576 * Description of the task's last state. 1577 */ 1578 public CharSequence description; 1579 1580 /** 1581 * The id of the ActivityStack this Task was on most recently. 1582 * @hide 1583 */ 1584 public int stackId; 1585 1586 /** 1587 * The id of the user the task was running as. 1588 * @hide 1589 */ 1590 public int userId; 1591 1592 /** 1593 * The first time this task was active. 1594 * @hide 1595 */ 1596 public long firstActiveTime; 1597 1598 /** 1599 * The last time this task was active. 1600 * @hide 1601 */ 1602 public long lastActiveTime; 1603 1604 /** 1605 * The recent activity values for the highest activity in the stack to have set the values. 1606 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1607 */ 1608 public TaskDescription taskDescription; 1609 1610 /** 1611 * Task affiliation for grouping with other tasks. 1612 */ 1613 public int affiliatedTaskId; 1614 1615 /** 1616 * Task affiliation color of the source task with the affiliated task id. 1617 * 1618 * @hide 1619 */ 1620 public int affiliatedTaskColor; 1621 1622 /** 1623 * The component launched as the first activity in the task. 1624 * This can be considered the "application" of this task. 1625 */ 1626 public ComponentName baseActivity; 1627 1628 /** 1629 * The activity component at the top of the history stack of the task. 1630 * This is what the user is currently doing. 1631 */ 1632 public ComponentName topActivity; 1633 1634 /** 1635 * Number of activities in this task. 1636 */ 1637 public int numActivities; 1638 1639 /** 1640 * The bounds of the task. 1641 * @hide 1642 */ 1643 public Rect bounds; 1644 1645 /** 1646 * True if the task can go in the docked stack. 1647 * @hide 1648 */ 1649 public boolean supportsSplitScreenMultiWindow; 1650 1651 /** 1652 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1653 * @hide 1654 */ 1655 public int resizeMode; 1656 1657 public RecentTaskInfo() { 1658 } 1659 1660 @Override 1661 public int describeContents() { 1662 return 0; 1663 } 1664 1665 @Override 1666 public void writeToParcel(Parcel dest, int flags) { 1667 dest.writeInt(id); 1668 dest.writeInt(persistentId); 1669 if (baseIntent != null) { 1670 dest.writeInt(1); 1671 baseIntent.writeToParcel(dest, 0); 1672 } else { 1673 dest.writeInt(0); 1674 } 1675 ComponentName.writeToParcel(origActivity, dest); 1676 ComponentName.writeToParcel(realActivity, dest); 1677 TextUtils.writeToParcel(description, dest, 1678 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1679 if (taskDescription != null) { 1680 dest.writeInt(1); 1681 taskDescription.writeToParcel(dest, 0); 1682 } else { 1683 dest.writeInt(0); 1684 } 1685 dest.writeInt(stackId); 1686 dest.writeInt(userId); 1687 dest.writeLong(firstActiveTime); 1688 dest.writeLong(lastActiveTime); 1689 dest.writeInt(affiliatedTaskId); 1690 dest.writeInt(affiliatedTaskColor); 1691 ComponentName.writeToParcel(baseActivity, dest); 1692 ComponentName.writeToParcel(topActivity, dest); 1693 dest.writeInt(numActivities); 1694 if (bounds != null) { 1695 dest.writeInt(1); 1696 bounds.writeToParcel(dest, 0); 1697 } else { 1698 dest.writeInt(0); 1699 } 1700 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1701 dest.writeInt(resizeMode); 1702 } 1703 1704 public void readFromParcel(Parcel source) { 1705 id = source.readInt(); 1706 persistentId = source.readInt(); 1707 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1708 origActivity = ComponentName.readFromParcel(source); 1709 realActivity = ComponentName.readFromParcel(source); 1710 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1711 taskDescription = source.readInt() > 0 ? 1712 TaskDescription.CREATOR.createFromParcel(source) : null; 1713 stackId = source.readInt(); 1714 userId = source.readInt(); 1715 firstActiveTime = source.readLong(); 1716 lastActiveTime = source.readLong(); 1717 affiliatedTaskId = source.readInt(); 1718 affiliatedTaskColor = source.readInt(); 1719 baseActivity = ComponentName.readFromParcel(source); 1720 topActivity = ComponentName.readFromParcel(source); 1721 numActivities = source.readInt(); 1722 bounds = source.readInt() > 0 ? 1723 Rect.CREATOR.createFromParcel(source) : null; 1724 supportsSplitScreenMultiWindow = source.readInt() == 1; 1725 resizeMode = source.readInt(); 1726 } 1727 1728 public static final Creator<RecentTaskInfo> CREATOR 1729 = new Creator<RecentTaskInfo>() { 1730 public RecentTaskInfo createFromParcel(Parcel source) { 1731 return new RecentTaskInfo(source); 1732 } 1733 public RecentTaskInfo[] newArray(int size) { 1734 return new RecentTaskInfo[size]; 1735 } 1736 }; 1737 1738 private RecentTaskInfo(Parcel source) { 1739 readFromParcel(source); 1740 } 1741 } 1742 1743 /** 1744 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1745 * that have set their 1746 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1747 */ 1748 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1749 1750 /** 1751 * Provides a list that does not contain any 1752 * recent tasks that currently are not available to the user. 1753 */ 1754 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1755 1756 /** 1757 * Provides a list that contains recent tasks for all 1758 * profiles of a user. 1759 * @hide 1760 */ 1761 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1762 1763 /** 1764 * Ignores all tasks that are on the home stack. 1765 * @hide 1766 */ 1767 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1768 1769 /** 1770 * Ignores the top task in the docked stack. 1771 * @hide 1772 */ 1773 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1774 1775 /** 1776 * Ignores all tasks that are on the pinned stack. 1777 * @hide 1778 */ 1779 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1780 1781 /** 1782 * <p></p>Return a list of the tasks that the user has recently launched, with 1783 * the most recent being first and older ones after in order. 1784 * 1785 * <p><b>Note: this method is only intended for debugging and presenting 1786 * task management user interfaces</b>. This should never be used for 1787 * core logic in an application, such as deciding between different 1788 * behaviors based on the information found here. Such uses are 1789 * <em>not</em> supported, and will likely break in the future. For 1790 * example, if multiple applications can be actively running at the 1791 * same time, assumptions made about the meaning of the data here for 1792 * purposes of control flow will be incorrect.</p> 1793 * 1794 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1795 * no longer available to third party applications: the introduction of 1796 * document-centric recents means 1797 * it can leak personal information to the caller. For backwards compatibility, 1798 * it will still return a small subset of its data: at least the caller's 1799 * own tasks (though see {@link #getAppTasks()} for the correct supported 1800 * way to retrieve that information), and possibly some other tasks 1801 * such as home that are known to not be sensitive. 1802 * 1803 * @param maxNum The maximum number of entries to return in the list. The 1804 * actual number returned may be smaller, depending on how many tasks the 1805 * user has started and the maximum number the system can remember. 1806 * @param flags Information about what to return. May be any combination 1807 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1808 * 1809 * @return Returns a list of RecentTaskInfo records describing each of 1810 * the recent tasks. 1811 */ 1812 @Deprecated 1813 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1814 throws SecurityException { 1815 try { 1816 return getService().getRecentTasks(maxNum, 1817 flags, UserHandle.myUserId()).getList(); 1818 } catch (RemoteException e) { 1819 throw e.rethrowFromSystemServer(); 1820 } 1821 } 1822 1823 /** 1824 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1825 * specific user. It requires holding 1826 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1827 * @param maxNum The maximum number of entries to return in the list. The 1828 * actual number returned may be smaller, depending on how many tasks the 1829 * user has started and the maximum number the system can remember. 1830 * @param flags Information about what to return. May be any combination 1831 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1832 * 1833 * @return Returns a list of RecentTaskInfo records describing each of 1834 * the recent tasks. Most recently activated tasks go first. 1835 * 1836 * @hide 1837 */ 1838 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1839 throws SecurityException { 1840 try { 1841 return getService().getRecentTasks(maxNum, 1842 flags, userId).getList(); 1843 } catch (RemoteException e) { 1844 throw e.rethrowFromSystemServer(); 1845 } 1846 } 1847 1848 /** 1849 * Information you can retrieve about a particular task that is currently 1850 * "running" in the system. Note that a running task does not mean the 1851 * given task actually has a process it is actively running in; it simply 1852 * means that the user has gone to it and never closed it, but currently 1853 * the system may have killed its process and is only holding on to its 1854 * last state in order to restart it when the user returns. 1855 */ 1856 public static class RunningTaskInfo implements Parcelable { 1857 /** 1858 * A unique identifier for this task. 1859 */ 1860 public int id; 1861 1862 /** 1863 * The stack that currently contains this task. 1864 * @hide 1865 */ 1866 public int stackId; 1867 1868 /** 1869 * The component launched as the first activity in the task. This can 1870 * be considered the "application" of this task. 1871 */ 1872 public ComponentName baseActivity; 1873 1874 /** 1875 * The activity component at the top of the history stack of the task. 1876 * This is what the user is currently doing. 1877 */ 1878 public ComponentName topActivity; 1879 1880 /** 1881 * Thumbnail representation of the task's current state. Currently 1882 * always null. 1883 */ 1884 public Bitmap thumbnail; 1885 1886 /** 1887 * Description of the task's current state. 1888 */ 1889 public CharSequence description; 1890 1891 /** 1892 * Number of activities in this task. 1893 */ 1894 public int numActivities; 1895 1896 /** 1897 * Number of activities that are currently running (not stopped 1898 * and persisted) in this task. 1899 */ 1900 public int numRunning; 1901 1902 /** 1903 * Last time task was run. For sorting. 1904 * @hide 1905 */ 1906 public long lastActiveTime; 1907 1908 /** 1909 * True if the task can go in the docked stack. 1910 * @hide 1911 */ 1912 public boolean supportsSplitScreenMultiWindow; 1913 1914 /** 1915 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1916 * @hide 1917 */ 1918 public int resizeMode; 1919 1920 public RunningTaskInfo() { 1921 } 1922 1923 public int describeContents() { 1924 return 0; 1925 } 1926 1927 public void writeToParcel(Parcel dest, int flags) { 1928 dest.writeInt(id); 1929 dest.writeInt(stackId); 1930 ComponentName.writeToParcel(baseActivity, dest); 1931 ComponentName.writeToParcel(topActivity, dest); 1932 if (thumbnail != null) { 1933 dest.writeInt(1); 1934 thumbnail.writeToParcel(dest, 0); 1935 } else { 1936 dest.writeInt(0); 1937 } 1938 TextUtils.writeToParcel(description, dest, 1939 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1940 dest.writeInt(numActivities); 1941 dest.writeInt(numRunning); 1942 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1943 dest.writeInt(resizeMode); 1944 } 1945 1946 public void readFromParcel(Parcel source) { 1947 id = source.readInt(); 1948 stackId = source.readInt(); 1949 baseActivity = ComponentName.readFromParcel(source); 1950 topActivity = ComponentName.readFromParcel(source); 1951 if (source.readInt() != 0) { 1952 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1953 } else { 1954 thumbnail = null; 1955 } 1956 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1957 numActivities = source.readInt(); 1958 numRunning = source.readInt(); 1959 supportsSplitScreenMultiWindow = source.readInt() != 0; 1960 resizeMode = source.readInt(); 1961 } 1962 1963 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1964 public RunningTaskInfo createFromParcel(Parcel source) { 1965 return new RunningTaskInfo(source); 1966 } 1967 public RunningTaskInfo[] newArray(int size) { 1968 return new RunningTaskInfo[size]; 1969 } 1970 }; 1971 1972 private RunningTaskInfo(Parcel source) { 1973 readFromParcel(source); 1974 } 1975 } 1976 1977 /** 1978 * Get the list of tasks associated with the calling application. 1979 * 1980 * @return The list of tasks associated with the application making this call. 1981 * @throws SecurityException 1982 */ 1983 public List<ActivityManager.AppTask> getAppTasks() { 1984 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1985 List<IBinder> appTasks; 1986 try { 1987 appTasks = getService().getAppTasks(mContext.getPackageName()); 1988 } catch (RemoteException e) { 1989 throw e.rethrowFromSystemServer(); 1990 } 1991 int numAppTasks = appTasks.size(); 1992 for (int i = 0; i < numAppTasks; i++) { 1993 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1994 } 1995 return tasks; 1996 } 1997 1998 /** 1999 * Return the current design dimensions for {@link AppTask} thumbnails, for use 2000 * with {@link #addAppTask}. 2001 */ 2002 public Size getAppTaskThumbnailSize() { 2003 synchronized (this) { 2004 ensureAppTaskThumbnailSizeLocked(); 2005 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 2006 } 2007 } 2008 2009 private void ensureAppTaskThumbnailSizeLocked() { 2010 if (mAppTaskThumbnailSize == null) { 2011 try { 2012 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 2013 } catch (RemoteException e) { 2014 throw e.rethrowFromSystemServer(); 2015 } 2016 } 2017 } 2018 2019 /** 2020 * Add a new {@link AppTask} for the calling application. This will create a new 2021 * recents entry that is added to the <b>end</b> of all existing recents. 2022 * 2023 * @param activity The activity that is adding the entry. This is used to help determine 2024 * the context that the new recents entry will be in. 2025 * @param intent The Intent that describes the recents entry. This is the same Intent that 2026 * you would have used to launch the activity for it. In generally you will want to set 2027 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 2028 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 2029 * entry will exist without an activity, so it doesn't make sense to not retain it when 2030 * its activity disappears. The given Intent here also must have an explicit ComponentName 2031 * set on it. 2032 * @param description Optional additional description information. 2033 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 2034 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 2035 * recreated in your process, probably in a way you don't like, before the recents entry 2036 * is added. 2037 * 2038 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 2039 * most likely cause of failure is that there is no more room for more tasks for your app. 2040 */ 2041 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 2042 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 2043 Point size; 2044 synchronized (this) { 2045 ensureAppTaskThumbnailSizeLocked(); 2046 size = mAppTaskThumbnailSize; 2047 } 2048 final int tw = thumbnail.getWidth(); 2049 final int th = thumbnail.getHeight(); 2050 if (tw != size.x || th != size.y) { 2051 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 2052 2053 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 2054 float scale; 2055 float dx = 0, dy = 0; 2056 if (tw * size.x > size.y * th) { 2057 scale = (float) size.x / (float) th; 2058 dx = (size.y - tw * scale) * 0.5f; 2059 } else { 2060 scale = (float) size.y / (float) tw; 2061 dy = (size.x - th * scale) * 0.5f; 2062 } 2063 Matrix matrix = new Matrix(); 2064 matrix.setScale(scale, scale); 2065 matrix.postTranslate((int) (dx + 0.5f), 0); 2066 2067 Canvas canvas = new Canvas(bm); 2068 canvas.drawBitmap(thumbnail, matrix, null); 2069 canvas.setBitmap(null); 2070 2071 thumbnail = bm; 2072 } 2073 if (description == null) { 2074 description = new TaskDescription(); 2075 } 2076 try { 2077 return getService().addAppTask(activity.getActivityToken(), 2078 intent, description, thumbnail); 2079 } catch (RemoteException e) { 2080 throw e.rethrowFromSystemServer(); 2081 } 2082 } 2083 2084 /** 2085 * Return a list of the tasks that are currently running, with 2086 * the most recent being first and older ones after in order. Note that 2087 * "running" does not mean any of the task's code is currently loaded or 2088 * activity -- the task may have been frozen by the system, so that it 2089 * can be restarted in its previous state when next brought to the 2090 * foreground. 2091 * 2092 * <p><b>Note: this method is only intended for debugging and presenting 2093 * task management user interfaces</b>. This should never be used for 2094 * core logic in an application, such as deciding between different 2095 * behaviors based on the information found here. Such uses are 2096 * <em>not</em> supported, and will likely break in the future. For 2097 * example, if multiple applications can be actively running at the 2098 * same time, assumptions made about the meaning of the data here for 2099 * purposes of control flow will be incorrect.</p> 2100 * 2101 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 2102 * is no longer available to third party 2103 * applications: the introduction of document-centric recents means 2104 * it can leak person information to the caller. For backwards compatibility, 2105 * it will still retu rn a small subset of its data: at least the caller's 2106 * own tasks, and possibly some other tasks 2107 * such as home that are known to not be sensitive. 2108 * 2109 * @param maxNum The maximum number of entries to return in the list. The 2110 * actual number returned may be smaller, depending on how many tasks the 2111 * user has started. 2112 * 2113 * @return Returns a list of RunningTaskInfo records describing each of 2114 * the running tasks. 2115 */ 2116 @Deprecated 2117 public List<RunningTaskInfo> getRunningTasks(int maxNum) 2118 throws SecurityException { 2119 try { 2120 return getService().getTasks(maxNum, 0); 2121 } catch (RemoteException e) { 2122 throw e.rethrowFromSystemServer(); 2123 } 2124 } 2125 2126 /** 2127 * Completely remove the given task. 2128 * 2129 * @param taskId Identifier of the task to be removed. 2130 * @return Returns true if the given task was found and removed. 2131 * 2132 * @hide 2133 */ 2134 public boolean removeTask(int taskId) throws SecurityException { 2135 try { 2136 return getService().removeTask(taskId); 2137 } catch (RemoteException e) { 2138 throw e.rethrowFromSystemServer(); 2139 } 2140 } 2141 2142 /** 2143 * Metadata related to the {@link TaskThumbnail}. 2144 * 2145 * @hide 2146 */ 2147 public static class TaskThumbnailInfo implements Parcelable { 2148 /** @hide */ 2149 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2150 private static final String ATTR_TASK_WIDTH = 2151 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2152 private static final String ATTR_TASK_HEIGHT = 2153 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2154 private static final String ATTR_SCREEN_ORIENTATION = 2155 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2156 2157 public int taskWidth; 2158 public int taskHeight; 2159 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2160 2161 public TaskThumbnailInfo() { 2162 // Do nothing 2163 } 2164 2165 private TaskThumbnailInfo(Parcel source) { 2166 readFromParcel(source); 2167 } 2168 2169 /** 2170 * Resets this info state to the initial state. 2171 * @hide 2172 */ 2173 public void reset() { 2174 taskWidth = 0; 2175 taskHeight = 0; 2176 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2177 } 2178 2179 /** 2180 * Copies from another ThumbnailInfo. 2181 */ 2182 public void copyFrom(TaskThumbnailInfo o) { 2183 taskWidth = o.taskWidth; 2184 taskHeight = o.taskHeight; 2185 screenOrientation = o.screenOrientation; 2186 } 2187 2188 /** @hide */ 2189 public void saveToXml(XmlSerializer out) throws IOException { 2190 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2191 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2192 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2193 } 2194 2195 /** @hide */ 2196 public void restoreFromXml(String attrName, String attrValue) { 2197 if (ATTR_TASK_WIDTH.equals(attrName)) { 2198 taskWidth = Integer.parseInt(attrValue); 2199 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2200 taskHeight = Integer.parseInt(attrValue); 2201 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2202 screenOrientation = Integer.parseInt(attrValue); 2203 } 2204 } 2205 2206 public int describeContents() { 2207 return 0; 2208 } 2209 2210 public void writeToParcel(Parcel dest, int flags) { 2211 dest.writeInt(taskWidth); 2212 dest.writeInt(taskHeight); 2213 dest.writeInt(screenOrientation); 2214 } 2215 2216 public void readFromParcel(Parcel source) { 2217 taskWidth = source.readInt(); 2218 taskHeight = source.readInt(); 2219 screenOrientation = source.readInt(); 2220 } 2221 2222 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2223 public TaskThumbnailInfo createFromParcel(Parcel source) { 2224 return new TaskThumbnailInfo(source); 2225 } 2226 public TaskThumbnailInfo[] newArray(int size) { 2227 return new TaskThumbnailInfo[size]; 2228 } 2229 }; 2230 } 2231 2232 /** @hide */ 2233 public static class TaskThumbnail implements Parcelable { 2234 public Bitmap mainThumbnail; 2235 public ParcelFileDescriptor thumbnailFileDescriptor; 2236 public TaskThumbnailInfo thumbnailInfo; 2237 2238 public TaskThumbnail() { 2239 } 2240 2241 private TaskThumbnail(Parcel source) { 2242 readFromParcel(source); 2243 } 2244 2245 public int describeContents() { 2246 if (thumbnailFileDescriptor != null) { 2247 return thumbnailFileDescriptor.describeContents(); 2248 } 2249 return 0; 2250 } 2251 2252 public void writeToParcel(Parcel dest, int flags) { 2253 if (mainThumbnail != null) { 2254 dest.writeInt(1); 2255 mainThumbnail.writeToParcel(dest, flags); 2256 } else { 2257 dest.writeInt(0); 2258 } 2259 if (thumbnailFileDescriptor != null) { 2260 dest.writeInt(1); 2261 thumbnailFileDescriptor.writeToParcel(dest, flags); 2262 } else { 2263 dest.writeInt(0); 2264 } 2265 if (thumbnailInfo != null) { 2266 dest.writeInt(1); 2267 thumbnailInfo.writeToParcel(dest, flags); 2268 } else { 2269 dest.writeInt(0); 2270 } 2271 } 2272 2273 public void readFromParcel(Parcel source) { 2274 if (source.readInt() != 0) { 2275 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2276 } else { 2277 mainThumbnail = null; 2278 } 2279 if (source.readInt() != 0) { 2280 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2281 } else { 2282 thumbnailFileDescriptor = null; 2283 } 2284 if (source.readInt() != 0) { 2285 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2286 } else { 2287 thumbnailInfo = null; 2288 } 2289 } 2290 2291 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2292 public TaskThumbnail createFromParcel(Parcel source) { 2293 return new TaskThumbnail(source); 2294 } 2295 public TaskThumbnail[] newArray(int size) { 2296 return new TaskThumbnail[size]; 2297 } 2298 }; 2299 } 2300 2301 /** 2302 * Represents a task snapshot. 2303 * @hide 2304 */ 2305 public static class TaskSnapshot implements Parcelable { 2306 2307 private final GraphicBuffer mSnapshot; 2308 private final int mOrientation; 2309 private final Rect mContentInsets; 2310 private final boolean mReducedResolution; 2311 private final float mScale; 2312 2313 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2314 boolean reducedResolution, float scale) { 2315 mSnapshot = snapshot; 2316 mOrientation = orientation; 2317 mContentInsets = new Rect(contentInsets); 2318 mReducedResolution = reducedResolution; 2319 mScale = scale; 2320 } 2321 2322 private TaskSnapshot(Parcel source) { 2323 mSnapshot = source.readParcelable(null /* classLoader */); 2324 mOrientation = source.readInt(); 2325 mContentInsets = source.readParcelable(null /* classLoader */); 2326 mReducedResolution = source.readBoolean(); 2327 mScale = source.readFloat(); 2328 } 2329 2330 /** 2331 * @return The graphic buffer representing the screenshot. 2332 */ 2333 public GraphicBuffer getSnapshot() { 2334 return mSnapshot; 2335 } 2336 2337 /** 2338 * @return The screen orientation the screenshot was taken in. 2339 */ 2340 public int getOrientation() { 2341 return mOrientation; 2342 } 2343 2344 /** 2345 * @return The system/content insets on the snapshot. These can be clipped off in order to 2346 * remove any areas behind system bars in the snapshot. 2347 */ 2348 public Rect getContentInsets() { 2349 return mContentInsets; 2350 } 2351 2352 /** 2353 * @return Whether this snapshot is a down-sampled version of the full resolution. 2354 */ 2355 public boolean isReducedResolution() { 2356 return mReducedResolution; 2357 } 2358 2359 /** 2360 * @return The scale this snapshot was taken in. 2361 */ 2362 public float getScale() { 2363 return mScale; 2364 } 2365 2366 @Override 2367 public int describeContents() { 2368 return 0; 2369 } 2370 2371 @Override 2372 public void writeToParcel(Parcel dest, int flags) { 2373 dest.writeParcelable(mSnapshot, 0); 2374 dest.writeInt(mOrientation); 2375 dest.writeParcelable(mContentInsets, 0); 2376 dest.writeBoolean(mReducedResolution); 2377 dest.writeFloat(mScale); 2378 } 2379 2380 @Override 2381 public String toString() { 2382 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2383 + " mContentInsets=" + mContentInsets.toShortString() 2384 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2385 } 2386 2387 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2388 public TaskSnapshot createFromParcel(Parcel source) { 2389 return new TaskSnapshot(source); 2390 } 2391 public TaskSnapshot[] newArray(int size) { 2392 return new TaskSnapshot[size]; 2393 } 2394 }; 2395 } 2396 2397 /** @hide */ 2398 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2399 try { 2400 return getService().getTaskThumbnail(id); 2401 } catch (RemoteException e) { 2402 throw e.rethrowFromSystemServer(); 2403 } 2404 } 2405 2406 /** @hide */ 2407 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2408 MOVE_TASK_WITH_HOME, 2409 MOVE_TASK_NO_USER_ACTION, 2410 }) 2411 @Retention(RetentionPolicy.SOURCE) 2412 public @interface MoveTaskFlags {} 2413 2414 /** 2415 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2416 * activity along with the task, so it is positioned immediately behind 2417 * the task. 2418 */ 2419 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2420 2421 /** 2422 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2423 * user-instigated action, so the current activity will not receive a 2424 * hint that the user is leaving. 2425 */ 2426 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2427 2428 /** 2429 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2430 * with a null options argument. 2431 * 2432 * @param taskId The identifier of the task to be moved, as found in 2433 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2434 * @param flags Additional operational flags. 2435 */ 2436 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2437 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2438 moveTaskToFront(taskId, flags, null); 2439 } 2440 2441 /** 2442 * Ask that the task associated with a given task ID be moved to the 2443 * front of the stack, so it is now visible to the user. 2444 * 2445 * @param taskId The identifier of the task to be moved, as found in 2446 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2447 * @param flags Additional operational flags. 2448 * @param options Additional options for the operation, either null or 2449 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2450 * Context.startActivity(Intent, Bundle)}. 2451 */ 2452 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2453 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2454 try { 2455 getService().moveTaskToFront(taskId, flags, options); 2456 } catch (RemoteException e) { 2457 throw e.rethrowFromSystemServer(); 2458 } 2459 } 2460 2461 /** 2462 * Information you can retrieve about a particular Service that is 2463 * currently running in the system. 2464 */ 2465 public static class RunningServiceInfo implements Parcelable { 2466 /** 2467 * The service component. 2468 */ 2469 public ComponentName service; 2470 2471 /** 2472 * If non-zero, this is the process the service is running in. 2473 */ 2474 public int pid; 2475 2476 /** 2477 * The UID that owns this service. 2478 */ 2479 public int uid; 2480 2481 /** 2482 * The name of the process this service runs in. 2483 */ 2484 public String process; 2485 2486 /** 2487 * Set to true if the service has asked to run as a foreground process. 2488 */ 2489 public boolean foreground; 2490 2491 /** 2492 * The time when the service was first made active, either by someone 2493 * starting or binding to it. This 2494 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2495 */ 2496 public long activeSince; 2497 2498 /** 2499 * Set to true if this service has been explicitly started. 2500 */ 2501 public boolean started; 2502 2503 /** 2504 * Number of clients connected to the service. 2505 */ 2506 public int clientCount; 2507 2508 /** 2509 * Number of times the service's process has crashed while the service 2510 * is running. 2511 */ 2512 public int crashCount; 2513 2514 /** 2515 * The time when there was last activity in the service (either 2516 * explicit requests to start it or clients binding to it). This 2517 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2518 */ 2519 public long lastActivityTime; 2520 2521 /** 2522 * If non-zero, this service is not currently running, but scheduled to 2523 * restart at the given time. 2524 */ 2525 public long restarting; 2526 2527 /** 2528 * Bit for {@link #flags}: set if this service has been 2529 * explicitly started. 2530 */ 2531 public static final int FLAG_STARTED = 1<<0; 2532 2533 /** 2534 * Bit for {@link #flags}: set if the service has asked to 2535 * run as a foreground process. 2536 */ 2537 public static final int FLAG_FOREGROUND = 1<<1; 2538 2539 /** 2540 * Bit for {@link #flags}: set if the service is running in a 2541 * core system process. 2542 */ 2543 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2544 2545 /** 2546 * Bit for {@link #flags}: set if the service is running in a 2547 * persistent process. 2548 */ 2549 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2550 2551 /** 2552 * Running flags. 2553 */ 2554 public int flags; 2555 2556 /** 2557 * For special services that are bound to by system code, this is 2558 * the package that holds the binding. 2559 */ 2560 public String clientPackage; 2561 2562 /** 2563 * For special services that are bound to by system code, this is 2564 * a string resource providing a user-visible label for who the 2565 * client is. 2566 */ 2567 public int clientLabel; 2568 2569 public RunningServiceInfo() { 2570 } 2571 2572 public int describeContents() { 2573 return 0; 2574 } 2575 2576 public void writeToParcel(Parcel dest, int flags) { 2577 ComponentName.writeToParcel(service, dest); 2578 dest.writeInt(pid); 2579 dest.writeInt(uid); 2580 dest.writeString(process); 2581 dest.writeInt(foreground ? 1 : 0); 2582 dest.writeLong(activeSince); 2583 dest.writeInt(started ? 1 : 0); 2584 dest.writeInt(clientCount); 2585 dest.writeInt(crashCount); 2586 dest.writeLong(lastActivityTime); 2587 dest.writeLong(restarting); 2588 dest.writeInt(this.flags); 2589 dest.writeString(clientPackage); 2590 dest.writeInt(clientLabel); 2591 } 2592 2593 public void readFromParcel(Parcel source) { 2594 service = ComponentName.readFromParcel(source); 2595 pid = source.readInt(); 2596 uid = source.readInt(); 2597 process = source.readString(); 2598 foreground = source.readInt() != 0; 2599 activeSince = source.readLong(); 2600 started = source.readInt() != 0; 2601 clientCount = source.readInt(); 2602 crashCount = source.readInt(); 2603 lastActivityTime = source.readLong(); 2604 restarting = source.readLong(); 2605 flags = source.readInt(); 2606 clientPackage = source.readString(); 2607 clientLabel = source.readInt(); 2608 } 2609 2610 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2611 public RunningServiceInfo createFromParcel(Parcel source) { 2612 return new RunningServiceInfo(source); 2613 } 2614 public RunningServiceInfo[] newArray(int size) { 2615 return new RunningServiceInfo[size]; 2616 } 2617 }; 2618 2619 private RunningServiceInfo(Parcel source) { 2620 readFromParcel(source); 2621 } 2622 } 2623 2624 /** 2625 * Return a list of the services that are currently running. 2626 * 2627 * <p><b>Note: this method is only intended for debugging or implementing 2628 * service management type user interfaces.</b></p> 2629 * 2630 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2631 * is no longer available to third party applications. For backwards compatibility, 2632 * it will still return the caller's own services. 2633 * 2634 * @param maxNum The maximum number of entries to return in the list. The 2635 * actual number returned may be smaller, depending on how many services 2636 * are running. 2637 * 2638 * @return Returns a list of RunningServiceInfo records describing each of 2639 * the running tasks. 2640 */ 2641 @Deprecated 2642 public List<RunningServiceInfo> getRunningServices(int maxNum) 2643 throws SecurityException { 2644 try { 2645 return getService() 2646 .getServices(maxNum, 0); 2647 } catch (RemoteException e) { 2648 throw e.rethrowFromSystemServer(); 2649 } 2650 } 2651 2652 /** 2653 * Returns a PendingIntent you can start to show a control panel for the 2654 * given running service. If the service does not have a control panel, 2655 * null is returned. 2656 */ 2657 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2658 throws SecurityException { 2659 try { 2660 return getService() 2661 .getRunningServiceControlPanel(service); 2662 } catch (RemoteException e) { 2663 throw e.rethrowFromSystemServer(); 2664 } 2665 } 2666 2667 /** 2668 * Information you can retrieve about the available memory through 2669 * {@link ActivityManager#getMemoryInfo}. 2670 */ 2671 public static class MemoryInfo implements Parcelable { 2672 /** 2673 * The available memory on the system. This number should not 2674 * be considered absolute: due to the nature of the kernel, a significant 2675 * portion of this memory is actually in use and needed for the overall 2676 * system to run well. 2677 */ 2678 public long availMem; 2679 2680 /** 2681 * The total memory accessible by the kernel. This is basically the 2682 * RAM size of the device, not including below-kernel fixed allocations 2683 * like DMA buffers, RAM for the baseband CPU, etc. 2684 */ 2685 public long totalMem; 2686 2687 /** 2688 * The threshold of {@link #availMem} at which we consider memory to be 2689 * low and start killing background services and other non-extraneous 2690 * processes. 2691 */ 2692 public long threshold; 2693 2694 /** 2695 * Set to true if the system considers itself to currently be in a low 2696 * memory situation. 2697 */ 2698 public boolean lowMemory; 2699 2700 /** @hide */ 2701 public long hiddenAppThreshold; 2702 /** @hide */ 2703 public long secondaryServerThreshold; 2704 /** @hide */ 2705 public long visibleAppThreshold; 2706 /** @hide */ 2707 public long foregroundAppThreshold; 2708 2709 public MemoryInfo() { 2710 } 2711 2712 public int describeContents() { 2713 return 0; 2714 } 2715 2716 public void writeToParcel(Parcel dest, int flags) { 2717 dest.writeLong(availMem); 2718 dest.writeLong(totalMem); 2719 dest.writeLong(threshold); 2720 dest.writeInt(lowMemory ? 1 : 0); 2721 dest.writeLong(hiddenAppThreshold); 2722 dest.writeLong(secondaryServerThreshold); 2723 dest.writeLong(visibleAppThreshold); 2724 dest.writeLong(foregroundAppThreshold); 2725 } 2726 2727 public void readFromParcel(Parcel source) { 2728 availMem = source.readLong(); 2729 totalMem = source.readLong(); 2730 threshold = source.readLong(); 2731 lowMemory = source.readInt() != 0; 2732 hiddenAppThreshold = source.readLong(); 2733 secondaryServerThreshold = source.readLong(); 2734 visibleAppThreshold = source.readLong(); 2735 foregroundAppThreshold = source.readLong(); 2736 } 2737 2738 public static final Creator<MemoryInfo> CREATOR 2739 = new Creator<MemoryInfo>() { 2740 public MemoryInfo createFromParcel(Parcel source) { 2741 return new MemoryInfo(source); 2742 } 2743 public MemoryInfo[] newArray(int size) { 2744 return new MemoryInfo[size]; 2745 } 2746 }; 2747 2748 private MemoryInfo(Parcel source) { 2749 readFromParcel(source); 2750 } 2751 } 2752 2753 /** 2754 * Return general information about the memory state of the system. This 2755 * can be used to help decide how to manage your own memory, though note 2756 * that polling is not recommended and 2757 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2758 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2759 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2760 * level of your process as needed, which gives a better hint for how to 2761 * manage its memory. 2762 */ 2763 public void getMemoryInfo(MemoryInfo outInfo) { 2764 try { 2765 getService().getMemoryInfo(outInfo); 2766 } catch (RemoteException e) { 2767 throw e.rethrowFromSystemServer(); 2768 } 2769 } 2770 2771 /** 2772 * Information you can retrieve about an ActivityStack in the system. 2773 * @hide 2774 */ 2775 public static class StackInfo implements Parcelable { 2776 public int stackId; 2777 public Rect bounds = new Rect(); 2778 public int[] taskIds; 2779 public String[] taskNames; 2780 public Rect[] taskBounds; 2781 public int[] taskUserIds; 2782 public ComponentName topActivity; 2783 public int displayId; 2784 public int userId; 2785 public boolean visible; 2786 // Index of the stack in the display's stack list, can be used for comparison of stack order 2787 public int position; 2788 2789 @Override 2790 public int describeContents() { 2791 return 0; 2792 } 2793 2794 @Override 2795 public void writeToParcel(Parcel dest, int flags) { 2796 dest.writeInt(stackId); 2797 dest.writeInt(bounds.left); 2798 dest.writeInt(bounds.top); 2799 dest.writeInt(bounds.right); 2800 dest.writeInt(bounds.bottom); 2801 dest.writeIntArray(taskIds); 2802 dest.writeStringArray(taskNames); 2803 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2804 dest.writeInt(boundsCount); 2805 for (int i = 0; i < boundsCount; i++) { 2806 dest.writeInt(taskBounds[i].left); 2807 dest.writeInt(taskBounds[i].top); 2808 dest.writeInt(taskBounds[i].right); 2809 dest.writeInt(taskBounds[i].bottom); 2810 } 2811 dest.writeIntArray(taskUserIds); 2812 dest.writeInt(displayId); 2813 dest.writeInt(userId); 2814 dest.writeInt(visible ? 1 : 0); 2815 dest.writeInt(position); 2816 if (topActivity != null) { 2817 dest.writeInt(1); 2818 topActivity.writeToParcel(dest, 0); 2819 } else { 2820 dest.writeInt(0); 2821 } 2822 } 2823 2824 public void readFromParcel(Parcel source) { 2825 stackId = source.readInt(); 2826 bounds = new Rect( 2827 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2828 taskIds = source.createIntArray(); 2829 taskNames = source.createStringArray(); 2830 final int boundsCount = source.readInt(); 2831 if (boundsCount > 0) { 2832 taskBounds = new Rect[boundsCount]; 2833 for (int i = 0; i < boundsCount; i++) { 2834 taskBounds[i] = new Rect(); 2835 taskBounds[i].set( 2836 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2837 } 2838 } else { 2839 taskBounds = null; 2840 } 2841 taskUserIds = source.createIntArray(); 2842 displayId = source.readInt(); 2843 userId = source.readInt(); 2844 visible = source.readInt() > 0; 2845 position = source.readInt(); 2846 if (source.readInt() > 0) { 2847 topActivity = ComponentName.readFromParcel(source); 2848 } 2849 } 2850 2851 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2852 @Override 2853 public StackInfo createFromParcel(Parcel source) { 2854 return new StackInfo(source); 2855 } 2856 @Override 2857 public StackInfo[] newArray(int size) { 2858 return new StackInfo[size]; 2859 } 2860 }; 2861 2862 public StackInfo() { 2863 } 2864 2865 private StackInfo(Parcel source) { 2866 readFromParcel(source); 2867 } 2868 2869 public String toString(String prefix) { 2870 StringBuilder sb = new StringBuilder(256); 2871 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2872 sb.append(" bounds="); sb.append(bounds.toShortString()); 2873 sb.append(" displayId="); sb.append(displayId); 2874 sb.append(" userId="); sb.append(userId); 2875 sb.append("\n"); 2876 prefix = prefix + " "; 2877 for (int i = 0; i < taskIds.length; ++i) { 2878 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2879 sb.append(": "); sb.append(taskNames[i]); 2880 if (taskBounds != null) { 2881 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2882 } 2883 sb.append(" userId=").append(taskUserIds[i]); 2884 sb.append(" visible=").append(visible); 2885 if (topActivity != null) { 2886 sb.append(" topActivity=").append(topActivity); 2887 } 2888 sb.append("\n"); 2889 } 2890 return sb.toString(); 2891 } 2892 2893 @Override 2894 public String toString() { 2895 return toString(""); 2896 } 2897 } 2898 2899 /** 2900 * @hide 2901 */ 2902 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2903 try { 2904 return getService().clearApplicationUserData(packageName, 2905 observer, UserHandle.myUserId()); 2906 } catch (RemoteException e) { 2907 throw e.rethrowFromSystemServer(); 2908 } 2909 } 2910 2911 /** 2912 * Permits an application to erase its own data from disk. This is equivalent to 2913 * the user choosing to clear the app's data from within the device settings UI. It 2914 * erases all dynamic data associated with the app -- its private data and data in its 2915 * private area on external storage -- but does not remove the installed application 2916 * itself, nor any OBB files. 2917 * 2918 * @return {@code true} if the application successfully requested that the application's 2919 * data be erased; {@code false} otherwise. 2920 */ 2921 public boolean clearApplicationUserData() { 2922 return clearApplicationUserData(mContext.getPackageName(), null); 2923 } 2924 2925 2926 /** 2927 * Permits an application to get the persistent URI permissions granted to another. 2928 * 2929 * <p>Typically called by Settings. 2930 * 2931 * @param packageName application to look for the granted permissions 2932 * @return list of granted URI permissions 2933 * 2934 * @hide 2935 */ 2936 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2937 try { 2938 return getService().getGrantedUriPermissions(packageName, 2939 UserHandle.myUserId()); 2940 } catch (RemoteException e) { 2941 throw e.rethrowFromSystemServer(); 2942 } 2943 } 2944 2945 /** 2946 * Permits an application to clear the persistent URI permissions granted to another. 2947 * 2948 * <p>Typically called by Settings. 2949 * 2950 * @param packageName application to clear its granted permissions 2951 * 2952 * @hide 2953 */ 2954 public void clearGrantedUriPermissions(String packageName) { 2955 try { 2956 getService().clearGrantedUriPermissions(packageName, 2957 UserHandle.myUserId()); 2958 } catch (RemoteException e) { 2959 throw e.rethrowFromSystemServer(); 2960 } 2961 } 2962 2963 /** 2964 * Information you can retrieve about any processes that are in an error condition. 2965 */ 2966 public static class ProcessErrorStateInfo implements Parcelable { 2967 /** 2968 * Condition codes 2969 */ 2970 public static final int NO_ERROR = 0; 2971 public static final int CRASHED = 1; 2972 public static final int NOT_RESPONDING = 2; 2973 2974 /** 2975 * The condition that the process is in. 2976 */ 2977 public int condition; 2978 2979 /** 2980 * The process name in which the crash or error occurred. 2981 */ 2982 public String processName; 2983 2984 /** 2985 * The pid of this process; 0 if none 2986 */ 2987 public int pid; 2988 2989 /** 2990 * The kernel user-ID that has been assigned to this process; 2991 * currently this is not a unique ID (multiple applications can have 2992 * the same uid). 2993 */ 2994 public int uid; 2995 2996 /** 2997 * The activity name associated with the error, if known. May be null. 2998 */ 2999 public String tag; 3000 3001 /** 3002 * A short message describing the error condition. 3003 */ 3004 public String shortMsg; 3005 3006 /** 3007 * A long message describing the error condition. 3008 */ 3009 public String longMsg; 3010 3011 /** 3012 * The stack trace where the error originated. May be null. 3013 */ 3014 public String stackTrace; 3015 3016 /** 3017 * to be deprecated: This value will always be null. 3018 */ 3019 public byte[] crashData = null; 3020 3021 public ProcessErrorStateInfo() { 3022 } 3023 3024 @Override 3025 public int describeContents() { 3026 return 0; 3027 } 3028 3029 @Override 3030 public void writeToParcel(Parcel dest, int flags) { 3031 dest.writeInt(condition); 3032 dest.writeString(processName); 3033 dest.writeInt(pid); 3034 dest.writeInt(uid); 3035 dest.writeString(tag); 3036 dest.writeString(shortMsg); 3037 dest.writeString(longMsg); 3038 dest.writeString(stackTrace); 3039 } 3040 3041 public void readFromParcel(Parcel source) { 3042 condition = source.readInt(); 3043 processName = source.readString(); 3044 pid = source.readInt(); 3045 uid = source.readInt(); 3046 tag = source.readString(); 3047 shortMsg = source.readString(); 3048 longMsg = source.readString(); 3049 stackTrace = source.readString(); 3050 } 3051 3052 public static final Creator<ProcessErrorStateInfo> CREATOR = 3053 new Creator<ProcessErrorStateInfo>() { 3054 public ProcessErrorStateInfo createFromParcel(Parcel source) { 3055 return new ProcessErrorStateInfo(source); 3056 } 3057 public ProcessErrorStateInfo[] newArray(int size) { 3058 return new ProcessErrorStateInfo[size]; 3059 } 3060 }; 3061 3062 private ProcessErrorStateInfo(Parcel source) { 3063 readFromParcel(source); 3064 } 3065 } 3066 3067 /** 3068 * Returns a list of any processes that are currently in an error condition. The result 3069 * will be null if all processes are running properly at this time. 3070 * 3071 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 3072 * current error conditions (it will not return an empty list). This list ordering is not 3073 * specified. 3074 */ 3075 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 3076 try { 3077 return getService().getProcessesInErrorState(); 3078 } catch (RemoteException e) { 3079 throw e.rethrowFromSystemServer(); 3080 } 3081 } 3082 3083 /** 3084 * Information you can retrieve about a running process. 3085 */ 3086 public static class RunningAppProcessInfo implements Parcelable { 3087 /** 3088 * The name of the process that this object is associated with 3089 */ 3090 public String processName; 3091 3092 /** 3093 * The pid of this process; 0 if none 3094 */ 3095 public int pid; 3096 3097 /** 3098 * The user id of this process. 3099 */ 3100 public int uid; 3101 3102 /** 3103 * All packages that have been loaded into the process. 3104 */ 3105 public String pkgList[]; 3106 3107 /** 3108 * Constant for {@link #flags}: this is an app that is unable to 3109 * correctly save its state when going to the background, 3110 * so it can not be killed while in the background. 3111 * @hide 3112 */ 3113 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 3114 3115 /** 3116 * Constant for {@link #flags}: this process is associated with a 3117 * persistent system app. 3118 * @hide 3119 */ 3120 public static final int FLAG_PERSISTENT = 1<<1; 3121 3122 /** 3123 * Constant for {@link #flags}: this process is associated with a 3124 * persistent system app. 3125 * @hide 3126 */ 3127 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 3128 3129 /** 3130 * Flags of information. May be any of 3131 * {@link #FLAG_CANT_SAVE_STATE}. 3132 * @hide 3133 */ 3134 public int flags; 3135 3136 /** 3137 * Last memory trim level reported to the process: corresponds to 3138 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 3139 * ComponentCallbacks2.onTrimMemory(int)}. 3140 */ 3141 public int lastTrimLevel; 3142 3143 /** @hide */ 3144 @IntDef(prefix = { "IMPORTANCE_" }, value = { 3145 IMPORTANCE_FOREGROUND, 3146 IMPORTANCE_FOREGROUND_SERVICE, 3147 IMPORTANCE_TOP_SLEEPING, 3148 IMPORTANCE_VISIBLE, 3149 IMPORTANCE_PERCEPTIBLE, 3150 IMPORTANCE_CANT_SAVE_STATE, 3151 IMPORTANCE_SERVICE, 3152 IMPORTANCE_CACHED, 3153 IMPORTANCE_GONE, 3154 }) 3155 @Retention(RetentionPolicy.SOURCE) 3156 public @interface Importance {} 3157 3158 /** 3159 * Constant for {@link #importance}: This process is running the 3160 * foreground UI; that is, it is the thing currently at the top of the screen 3161 * that the user is interacting with. 3162 */ 3163 public static final int IMPORTANCE_FOREGROUND = 100; 3164 3165 /** 3166 * Constant for {@link #importance}: This process is running a foreground 3167 * service, for example to perform music playback even while the user is 3168 * not immediately in the app. This generally indicates that the process 3169 * is doing something the user actively cares about. 3170 */ 3171 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3172 3173 /** 3174 * Constant for {@link #importance}: This process is running the foreground 3175 * UI, but the device is asleep so it is not visible to the user. This means 3176 * the user is not really aware of the process, because they can not see or 3177 * interact with it, but it is quite important because it what they expect to 3178 * return to once unlocking the device. 3179 */ 3180 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3181 3182 /** 3183 * Constant for {@link #importance}: This process is running something 3184 * that is actively visible to the user, though not in the immediate 3185 * foreground. This may be running a window that is behind the current 3186 * foreground (so paused and with its state saved, not interacting with 3187 * the user, but visible to them to some degree); it may also be running 3188 * other services under the system's control that it inconsiders important. 3189 */ 3190 public static final int IMPORTANCE_VISIBLE = 200; 3191 3192 /** 3193 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 3194 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3195 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 3196 * 3197 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 3198 * on Android versions below {@link Build.VERSION_CODES#O}. 3199 * 3200 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 3201 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3202 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3203 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 3204 */ 3205 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 3206 3207 /** 3208 * Constant for {@link #importance}: This process is not something the user 3209 * is directly aware of, but is otherwise perceptible to them to some degree. 3210 */ 3211 public static final int IMPORTANCE_PERCEPTIBLE = 230; 3212 3213 /** 3214 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 3215 * this wrong value 3216 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3217 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 3218 * 3219 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 3220 * on Android versions below {@link Build.VERSION_CODES#O}. 3221 * 3222 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 3223 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3224 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3225 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 3226 * 3227 * @hide 3228 */ 3229 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 3230 3231 /** 3232 * Constant for {@link #importance}: This process is running an 3233 * application that can not save its state, and thus can't be killed 3234 * while in the background. 3235 * @hide 3236 */ 3237 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 3238 3239 /** 3240 * Constant for {@link #importance}: This process is contains services 3241 * that should remain running. These are background services apps have 3242 * started, not something the user is aware of, so they may be killed by 3243 * the system relatively freely (though it is generally desired that they 3244 * stay running as long as they want to). 3245 */ 3246 public static final int IMPORTANCE_SERVICE = 300; 3247 3248 /** 3249 * Constant for {@link #importance}: This process process contains 3250 * cached code that is expendable, not actively running any app components 3251 * we care about. 3252 */ 3253 public static final int IMPORTANCE_CACHED = 400; 3254 3255 /** 3256 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3257 */ 3258 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3259 3260 /** 3261 * Constant for {@link #importance}: This process is empty of any 3262 * actively running code. 3263 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3264 */ 3265 @Deprecated 3266 public static final int IMPORTANCE_EMPTY = 500; 3267 3268 /** 3269 * Constant for {@link #importance}: This process does not exist. 3270 */ 3271 public static final int IMPORTANCE_GONE = 1000; 3272 3273 /** 3274 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 3275 * will be passed to a client, use {@link #procStateToImportanceForClient}. 3276 * @hide 3277 */ 3278 public static @Importance int procStateToImportance(int procState) { 3279 if (procState == PROCESS_STATE_NONEXISTENT) { 3280 return IMPORTANCE_GONE; 3281 } else if (procState >= PROCESS_STATE_HOME) { 3282 return IMPORTANCE_CACHED; 3283 } else if (procState >= PROCESS_STATE_SERVICE) { 3284 return IMPORTANCE_SERVICE; 3285 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3286 return IMPORTANCE_CANT_SAVE_STATE; 3287 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 3288 return IMPORTANCE_PERCEPTIBLE; 3289 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3290 return IMPORTANCE_VISIBLE; 3291 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3292 return IMPORTANCE_TOP_SLEEPING; 3293 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3294 return IMPORTANCE_FOREGROUND_SERVICE; 3295 } else { 3296 return IMPORTANCE_FOREGROUND; 3297 } 3298 } 3299 3300 /** 3301 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 3302 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 3303 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 3304 * client's target SDK < {@link VERSION_CODES#O}. 3305 * @hide 3306 */ 3307 public static @Importance int procStateToImportanceForClient(int procState, 3308 Context clientContext) { 3309 return procStateToImportanceForTargetSdk(procState, 3310 clientContext.getApplicationInfo().targetSdkVersion); 3311 } 3312 3313 /** 3314 * See {@link #procStateToImportanceForClient}. 3315 * @hide 3316 */ 3317 public static @Importance int procStateToImportanceForTargetSdk(int procState, 3318 int targetSdkVersion) { 3319 final int importance = procStateToImportance(procState); 3320 3321 // For pre O apps, convert to the old, wrong values. 3322 if (targetSdkVersion < VERSION_CODES.O) { 3323 switch (importance) { 3324 case IMPORTANCE_PERCEPTIBLE: 3325 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3326 case IMPORTANCE_CANT_SAVE_STATE: 3327 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3328 } 3329 } 3330 return importance; 3331 } 3332 3333 /** @hide */ 3334 public static int importanceToProcState(@Importance int importance) { 3335 if (importance == IMPORTANCE_GONE) { 3336 return PROCESS_STATE_NONEXISTENT; 3337 } else if (importance >= IMPORTANCE_CACHED) { 3338 return PROCESS_STATE_HOME; 3339 } else if (importance >= IMPORTANCE_SERVICE) { 3340 return PROCESS_STATE_SERVICE; 3341 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3342 return PROCESS_STATE_HEAVY_WEIGHT; 3343 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3344 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3345 } else if (importance >= IMPORTANCE_VISIBLE) { 3346 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3347 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3348 return PROCESS_STATE_TOP_SLEEPING; 3349 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3350 return PROCESS_STATE_FOREGROUND_SERVICE; 3351 } else { 3352 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3353 } 3354 } 3355 3356 /** 3357 * The relative importance level that the system places on this process. 3358 * These constants are numbered so that "more important" values are 3359 * always smaller than "less important" values. 3360 */ 3361 public @Importance int importance; 3362 3363 /** 3364 * An additional ordering within a particular {@link #importance} 3365 * category, providing finer-grained information about the relative 3366 * utility of processes within a category. This number means nothing 3367 * except that a smaller values are more recently used (and thus 3368 * more important). Currently an LRU value is only maintained for 3369 * the {@link #IMPORTANCE_CACHED} category, though others may 3370 * be maintained in the future. 3371 */ 3372 public int lru; 3373 3374 /** 3375 * Constant for {@link #importanceReasonCode}: nothing special has 3376 * been specified for the reason for this level. 3377 */ 3378 public static final int REASON_UNKNOWN = 0; 3379 3380 /** 3381 * Constant for {@link #importanceReasonCode}: one of the application's 3382 * content providers is being used by another process. The pid of 3383 * the client process is in {@link #importanceReasonPid} and the 3384 * target provider in this process is in 3385 * {@link #importanceReasonComponent}. 3386 */ 3387 public static final int REASON_PROVIDER_IN_USE = 1; 3388 3389 /** 3390 * Constant for {@link #importanceReasonCode}: one of the application's 3391 * content providers is being used by another process. The pid of 3392 * the client process is in {@link #importanceReasonPid} and the 3393 * target provider in this process is in 3394 * {@link #importanceReasonComponent}. 3395 */ 3396 public static final int REASON_SERVICE_IN_USE = 2; 3397 3398 /** 3399 * The reason for {@link #importance}, if any. 3400 */ 3401 public int importanceReasonCode; 3402 3403 /** 3404 * For the specified values of {@link #importanceReasonCode}, this 3405 * is the process ID of the other process that is a client of this 3406 * process. This will be 0 if no other process is using this one. 3407 */ 3408 public int importanceReasonPid; 3409 3410 /** 3411 * For the specified values of {@link #importanceReasonCode}, this 3412 * is the name of the component that is being used in this process. 3413 */ 3414 public ComponentName importanceReasonComponent; 3415 3416 /** 3417 * When {@link #importanceReasonPid} is non-0, this is the importance 3418 * of the other pid. @hide 3419 */ 3420 public int importanceReasonImportance; 3421 3422 /** 3423 * Current process state, as per PROCESS_STATE_* constants. 3424 * @hide 3425 */ 3426 public int processState; 3427 3428 public RunningAppProcessInfo() { 3429 importance = IMPORTANCE_FOREGROUND; 3430 importanceReasonCode = REASON_UNKNOWN; 3431 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3432 } 3433 3434 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3435 processName = pProcessName; 3436 pid = pPid; 3437 pkgList = pArr; 3438 } 3439 3440 public int describeContents() { 3441 return 0; 3442 } 3443 3444 public void writeToParcel(Parcel dest, int flags) { 3445 dest.writeString(processName); 3446 dest.writeInt(pid); 3447 dest.writeInt(uid); 3448 dest.writeStringArray(pkgList); 3449 dest.writeInt(this.flags); 3450 dest.writeInt(lastTrimLevel); 3451 dest.writeInt(importance); 3452 dest.writeInt(lru); 3453 dest.writeInt(importanceReasonCode); 3454 dest.writeInt(importanceReasonPid); 3455 ComponentName.writeToParcel(importanceReasonComponent, dest); 3456 dest.writeInt(importanceReasonImportance); 3457 dest.writeInt(processState); 3458 } 3459 3460 public void readFromParcel(Parcel source) { 3461 processName = source.readString(); 3462 pid = source.readInt(); 3463 uid = source.readInt(); 3464 pkgList = source.readStringArray(); 3465 flags = source.readInt(); 3466 lastTrimLevel = source.readInt(); 3467 importance = source.readInt(); 3468 lru = source.readInt(); 3469 importanceReasonCode = source.readInt(); 3470 importanceReasonPid = source.readInt(); 3471 importanceReasonComponent = ComponentName.readFromParcel(source); 3472 importanceReasonImportance = source.readInt(); 3473 processState = source.readInt(); 3474 } 3475 3476 public static final Creator<RunningAppProcessInfo> CREATOR = 3477 new Creator<RunningAppProcessInfo>() { 3478 public RunningAppProcessInfo createFromParcel(Parcel source) { 3479 return new RunningAppProcessInfo(source); 3480 } 3481 public RunningAppProcessInfo[] newArray(int size) { 3482 return new RunningAppProcessInfo[size]; 3483 } 3484 }; 3485 3486 private RunningAppProcessInfo(Parcel source) { 3487 readFromParcel(source); 3488 } 3489 } 3490 3491 /** 3492 * Returns a list of application processes installed on external media 3493 * that are running on the device. 3494 * 3495 * <p><b>Note: this method is only intended for debugging or building 3496 * a user-facing process management UI.</b></p> 3497 * 3498 * @return Returns a list of ApplicationInfo records, or null if none 3499 * This list ordering is not specified. 3500 * @hide 3501 */ 3502 public List<ApplicationInfo> getRunningExternalApplications() { 3503 try { 3504 return getService().getRunningExternalApplications(); 3505 } catch (RemoteException e) { 3506 throw e.rethrowFromSystemServer(); 3507 } 3508 } 3509 3510 /** 3511 * Sets the memory trim mode for a process and schedules a memory trim operation. 3512 * 3513 * <p><b>Note: this method is only intended for testing framework.</b></p> 3514 * 3515 * @return Returns true if successful. 3516 * @hide 3517 */ 3518 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3519 try { 3520 return getService().setProcessMemoryTrimLevel(process, userId, 3521 level); 3522 } catch (RemoteException e) { 3523 throw e.rethrowFromSystemServer(); 3524 } 3525 } 3526 3527 /** 3528 * Returns a list of application processes that are running on the device. 3529 * 3530 * <p><b>Note: this method is only intended for debugging or building 3531 * a user-facing process management UI.</b></p> 3532 * 3533 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3534 * running processes (it will not return an empty list). This list ordering is not 3535 * specified. 3536 */ 3537 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3538 try { 3539 return getService().getRunningAppProcesses(); 3540 } catch (RemoteException e) { 3541 throw e.rethrowFromSystemServer(); 3542 } 3543 } 3544 3545 /** 3546 * Return the importance of a given package name, based on the processes that are 3547 * currently running. The return value is one of the importance constants defined 3548 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3549 * processes that this package has code running inside of. If there are no processes 3550 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3551 * @hide 3552 */ 3553 @SystemApi @TestApi 3554 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3555 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3556 try { 3557 int procState = getService().getPackageProcessState(packageName, 3558 mContext.getOpPackageName()); 3559 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3560 } catch (RemoteException e) { 3561 throw e.rethrowFromSystemServer(); 3562 } 3563 } 3564 3565 /** 3566 * Return the importance of a given uid, based on the processes that are 3567 * currently running. The return value is one of the importance constants defined 3568 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3569 * processes that this uid has running. If there are no processes 3570 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3571 * @hide 3572 */ 3573 @SystemApi @TestApi 3574 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3575 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3576 try { 3577 int procState = getService().getUidProcessState(uid, 3578 mContext.getOpPackageName()); 3579 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3580 } catch (RemoteException e) { 3581 throw e.rethrowFromSystemServer(); 3582 } 3583 } 3584 3585 /** 3586 * Callback to get reports about changes to the importance of a uid. Use with 3587 * {@link #addOnUidImportanceListener}. 3588 * @hide 3589 */ 3590 @SystemApi @TestApi 3591 public interface OnUidImportanceListener { 3592 /** 3593 * The importance if a given uid has changed. Will be one of the importance 3594 * values in {@link RunningAppProcessInfo}; 3595 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3596 * when the uid is no longer running at all. This callback will happen on a thread 3597 * from a thread pool, not the main UI thread. 3598 * @param uid The uid whose importance has changed. 3599 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3600 */ 3601 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3602 } 3603 3604 /** 3605 * Start monitoring changes to the imoportance of uids running in the system. 3606 * @param listener The listener callback that will receive change reports. 3607 * @param importanceCutpoint The level of importance in which the caller is interested 3608 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3609 * is used here, you will receive a call each time a uids importance transitions between 3610 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3611 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3612 * 3613 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3614 * permission to use this feature.</p> 3615 * 3616 * @throws IllegalArgumentException If the listener is already registered. 3617 * @throws SecurityException If the caller does not hold 3618 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3619 * @hide 3620 */ 3621 @SystemApi @TestApi 3622 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3623 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3624 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3625 synchronized (this) { 3626 if (mImportanceListeners.containsKey(listener)) { 3627 throw new IllegalArgumentException("Listener already registered: " + listener); 3628 } 3629 // TODO: implement the cut point in the system process to avoid IPCs. 3630 UidObserver observer = new UidObserver(listener, mContext); 3631 try { 3632 getService().registerUidObserver(observer, 3633 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3634 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3635 mContext.getOpPackageName()); 3636 } catch (RemoteException e) { 3637 throw e.rethrowFromSystemServer(); 3638 } 3639 mImportanceListeners.put(listener, observer); 3640 } 3641 } 3642 3643 /** 3644 * Remove an importance listener that was previously registered with 3645 * {@link #addOnUidImportanceListener}. 3646 * 3647 * @throws IllegalArgumentException If the listener is not registered. 3648 * @hide 3649 */ 3650 @SystemApi @TestApi 3651 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3652 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3653 synchronized (this) { 3654 UidObserver observer = mImportanceListeners.remove(listener); 3655 if (observer == null) { 3656 throw new IllegalArgumentException("Listener not registered: " + listener); 3657 } 3658 try { 3659 getService().unregisterUidObserver(observer); 3660 } catch (RemoteException e) { 3661 throw e.rethrowFromSystemServer(); 3662 } 3663 } 3664 } 3665 3666 /** 3667 * Return global memory state information for the calling process. This 3668 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3669 * only fields that will be filled in are 3670 * {@link RunningAppProcessInfo#pid}, 3671 * {@link RunningAppProcessInfo#uid}, 3672 * {@link RunningAppProcessInfo#lastTrimLevel}, 3673 * {@link RunningAppProcessInfo#importance}, 3674 * {@link RunningAppProcessInfo#lru}, and 3675 * {@link RunningAppProcessInfo#importanceReasonCode}. 3676 */ 3677 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3678 try { 3679 getService().getMyMemoryState(outState); 3680 } catch (RemoteException e) { 3681 throw e.rethrowFromSystemServer(); 3682 } 3683 } 3684 3685 /** 3686 * Return information about the memory usage of one or more processes. 3687 * 3688 * <p><b>Note: this method is only intended for debugging or building 3689 * a user-facing process management UI.</b></p> 3690 * 3691 * @param pids The pids of the processes whose memory usage is to be 3692 * retrieved. 3693 * @return Returns an array of memory information, one for each 3694 * requested pid. 3695 */ 3696 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3697 try { 3698 return getService().getProcessMemoryInfo(pids); 3699 } catch (RemoteException e) { 3700 throw e.rethrowFromSystemServer(); 3701 } 3702 } 3703 3704 /** 3705 * @deprecated This is now just a wrapper for 3706 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3707 * is no longer available to applications because it allows them to 3708 * break other applications by removing their alarms, stopping their 3709 * services, etc. 3710 */ 3711 @Deprecated 3712 public void restartPackage(String packageName) { 3713 killBackgroundProcesses(packageName); 3714 } 3715 3716 /** 3717 * Have the system immediately kill all background processes associated 3718 * with the given package. This is the same as the kernel killing those 3719 * processes to reclaim memory; the system will take care of restarting 3720 * these processes in the future as needed. 3721 * 3722 * @param packageName The name of the package whose processes are to 3723 * be killed. 3724 */ 3725 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3726 public void killBackgroundProcesses(String packageName) { 3727 try { 3728 getService().killBackgroundProcesses(packageName, 3729 UserHandle.myUserId()); 3730 } catch (RemoteException e) { 3731 throw e.rethrowFromSystemServer(); 3732 } 3733 } 3734 3735 /** 3736 * Kills the specified UID. 3737 * @param uid The UID to kill. 3738 * @param reason The reason for the kill. 3739 * 3740 * @hide 3741 */ 3742 @SystemApi 3743 @RequiresPermission(Manifest.permission.KILL_UID) 3744 public void killUid(int uid, String reason) { 3745 try { 3746 getService().killUid(UserHandle.getAppId(uid), 3747 UserHandle.getUserId(uid), reason); 3748 } catch (RemoteException e) { 3749 throw e.rethrowFromSystemServer(); 3750 } 3751 } 3752 3753 /** 3754 * Have the system perform a force stop of everything associated with 3755 * the given application package. All processes that share its uid 3756 * will be killed, all services it has running stopped, all activities 3757 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3758 * broadcast will be sent, so that any of its registered alarms can 3759 * be stopped, notifications removed, etc. 3760 * 3761 * <p>You must hold the permission 3762 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3763 * call this method. 3764 * 3765 * @param packageName The name of the package to be stopped. 3766 * @param userId The user for which the running package is to be stopped. 3767 * 3768 * @hide This is not available to third party applications due to 3769 * it allowing them to break other applications by stopping their 3770 * services, removing their alarms, etc. 3771 */ 3772 public void forceStopPackageAsUser(String packageName, int userId) { 3773 try { 3774 getService().forceStopPackage(packageName, userId); 3775 } catch (RemoteException e) { 3776 throw e.rethrowFromSystemServer(); 3777 } 3778 } 3779 3780 /** 3781 * @see #forceStopPackageAsUser(String, int) 3782 * @hide 3783 */ 3784 @SystemApi 3785 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3786 public void forceStopPackage(String packageName) { 3787 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3788 } 3789 3790 /** 3791 * Get the device configuration attributes. 3792 */ 3793 public ConfigurationInfo getDeviceConfigurationInfo() { 3794 try { 3795 return getService().getDeviceConfigurationInfo(); 3796 } catch (RemoteException e) { 3797 throw e.rethrowFromSystemServer(); 3798 } 3799 } 3800 3801 /** 3802 * Get the preferred density of icons for the launcher. This is used when 3803 * custom drawables are created (e.g., for shortcuts). 3804 * 3805 * @return density in terms of DPI 3806 */ 3807 public int getLauncherLargeIconDensity() { 3808 final Resources res = mContext.getResources(); 3809 final int density = res.getDisplayMetrics().densityDpi; 3810 final int sw = res.getConfiguration().smallestScreenWidthDp; 3811 3812 if (sw < 600) { 3813 // Smaller than approx 7" tablets, use the regular icon size. 3814 return density; 3815 } 3816 3817 switch (density) { 3818 case DisplayMetrics.DENSITY_LOW: 3819 return DisplayMetrics.DENSITY_MEDIUM; 3820 case DisplayMetrics.DENSITY_MEDIUM: 3821 return DisplayMetrics.DENSITY_HIGH; 3822 case DisplayMetrics.DENSITY_TV: 3823 return DisplayMetrics.DENSITY_XHIGH; 3824 case DisplayMetrics.DENSITY_HIGH: 3825 return DisplayMetrics.DENSITY_XHIGH; 3826 case DisplayMetrics.DENSITY_XHIGH: 3827 return DisplayMetrics.DENSITY_XXHIGH; 3828 case DisplayMetrics.DENSITY_XXHIGH: 3829 return DisplayMetrics.DENSITY_XHIGH * 2; 3830 default: 3831 // The density is some abnormal value. Return some other 3832 // abnormal value that is a reasonable scaling of it. 3833 return (int)((density*1.5f)+.5f); 3834 } 3835 } 3836 3837 /** 3838 * Get the preferred launcher icon size. This is used when custom drawables 3839 * are created (e.g., for shortcuts). 3840 * 3841 * @return dimensions of square icons in terms of pixels 3842 */ 3843 public int getLauncherLargeIconSize() { 3844 return getLauncherLargeIconSizeInner(mContext); 3845 } 3846 3847 static int getLauncherLargeIconSizeInner(Context context) { 3848 final Resources res = context.getResources(); 3849 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3850 final int sw = res.getConfiguration().smallestScreenWidthDp; 3851 3852 if (sw < 600) { 3853 // Smaller than approx 7" tablets, use the regular icon size. 3854 return size; 3855 } 3856 3857 final int density = res.getDisplayMetrics().densityDpi; 3858 3859 switch (density) { 3860 case DisplayMetrics.DENSITY_LOW: 3861 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3862 case DisplayMetrics.DENSITY_MEDIUM: 3863 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3864 case DisplayMetrics.DENSITY_TV: 3865 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3866 case DisplayMetrics.DENSITY_HIGH: 3867 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3868 case DisplayMetrics.DENSITY_XHIGH: 3869 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3870 case DisplayMetrics.DENSITY_XXHIGH: 3871 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3872 default: 3873 // The density is some abnormal value. Return some other 3874 // abnormal value that is a reasonable scaling of it. 3875 return (int)((size*1.5f) + .5f); 3876 } 3877 } 3878 3879 /** 3880 * Returns "true" if the user interface is currently being messed with 3881 * by a monkey. 3882 */ 3883 public static boolean isUserAMonkey() { 3884 try { 3885 return getService().isUserAMonkey(); 3886 } catch (RemoteException e) { 3887 throw e.rethrowFromSystemServer(); 3888 } 3889 } 3890 3891 /** 3892 * Returns "true" if device is running in a test harness. 3893 */ 3894 public static boolean isRunningInTestHarness() { 3895 return SystemProperties.getBoolean("ro.test_harness", false); 3896 } 3897 3898 /** 3899 * Returns the launch count of each installed package. 3900 * 3901 * @hide 3902 */ 3903 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3904 try { 3905 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3906 ServiceManager.getService("usagestats")); 3907 if (usageStatsService == null) { 3908 return new HashMap<String, Integer>(); 3909 } 3910 3911 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3912 ActivityThread.currentPackageName()); 3913 if (allPkgUsageStats == null) { 3914 return new HashMap<String, Integer>(); 3915 } 3916 3917 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3918 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3919 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3920 } 3921 3922 return launchCounts; 3923 } catch (RemoteException e) { 3924 Log.w(TAG, "Could not query launch counts", e); 3925 return new HashMap<String, Integer>(); 3926 } 3927 }*/ 3928 3929 /** @hide */ 3930 public static int checkComponentPermission(String permission, int uid, 3931 int owningUid, boolean exported) { 3932 // Root, system server get to do everything. 3933 final int appId = UserHandle.getAppId(uid); 3934 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3935 return PackageManager.PERMISSION_GRANTED; 3936 } 3937 // Isolated processes don't get any permissions. 3938 if (UserHandle.isIsolated(uid)) { 3939 return PackageManager.PERMISSION_DENIED; 3940 } 3941 // If there is a uid that owns whatever is being accessed, it has 3942 // blanket access to it regardless of the permissions it requires. 3943 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3944 return PackageManager.PERMISSION_GRANTED; 3945 } 3946 // If the target is not exported, then nobody else can get to it. 3947 if (!exported) { 3948 /* 3949 RuntimeException here = new RuntimeException("here"); 3950 here.fillInStackTrace(); 3951 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3952 here); 3953 */ 3954 return PackageManager.PERMISSION_DENIED; 3955 } 3956 if (permission == null) { 3957 return PackageManager.PERMISSION_GRANTED; 3958 } 3959 try { 3960 return AppGlobals.getPackageManager() 3961 .checkUidPermission(permission, uid); 3962 } catch (RemoteException e) { 3963 throw e.rethrowFromSystemServer(); 3964 } 3965 } 3966 3967 /** @hide */ 3968 public static int checkUidPermission(String permission, int uid) { 3969 try { 3970 return AppGlobals.getPackageManager() 3971 .checkUidPermission(permission, uid); 3972 } catch (RemoteException e) { 3973 throw e.rethrowFromSystemServer(); 3974 } 3975 } 3976 3977 /** 3978 * @hide 3979 * Helper for dealing with incoming user arguments to system service calls. 3980 * Takes care of checking permissions and converting USER_CURRENT to the 3981 * actual current user. 3982 * 3983 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3984 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3985 * @param userId The user id argument supplied by the caller -- this is the user 3986 * they want to run as. 3987 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3988 * to get a USER_ALL returned and deal with it correctly. If false, 3989 * an exception will be thrown if USER_ALL is supplied. 3990 * @param requireFull If true, the caller must hold 3991 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3992 * different user than their current process; otherwise they must hold 3993 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3994 * @param name Optional textual name of the incoming call; only for generating error messages. 3995 * @param callerPackage Optional package name of caller; only for error messages. 3996 * 3997 * @return Returns the user ID that the call should run as. Will always be a concrete 3998 * user number, unless <var>allowAll</var> is true in which case it could also be 3999 * USER_ALL. 4000 */ 4001 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 4002 boolean allowAll, boolean requireFull, String name, String callerPackage) { 4003 if (UserHandle.getUserId(callingUid) == userId) { 4004 return userId; 4005 } 4006 try { 4007 return getService().handleIncomingUser(callingPid, 4008 callingUid, userId, allowAll, requireFull, name, callerPackage); 4009 } catch (RemoteException e) { 4010 throw e.rethrowFromSystemServer(); 4011 } 4012 } 4013 4014 /** 4015 * Gets the userId of the current foreground user. Requires system permissions. 4016 * @hide 4017 */ 4018 @SystemApi 4019 @RequiresPermission(anyOf = { 4020 "android.permission.INTERACT_ACROSS_USERS", 4021 "android.permission.INTERACT_ACROSS_USERS_FULL" 4022 }) 4023 public static int getCurrentUser() { 4024 UserInfo ui; 4025 try { 4026 ui = getService().getCurrentUser(); 4027 return ui != null ? ui.id : 0; 4028 } catch (RemoteException e) { 4029 throw e.rethrowFromSystemServer(); 4030 } 4031 } 4032 4033 /** 4034 * @param userid the user's id. Zero indicates the default user. 4035 * @hide 4036 */ 4037 public boolean switchUser(int userid) { 4038 try { 4039 return getService().switchUser(userid); 4040 } catch (RemoteException e) { 4041 throw e.rethrowFromSystemServer(); 4042 } 4043 } 4044 4045 /** 4046 * Logs out current current foreground user by switching to the system user and stopping the 4047 * user being switched from. 4048 * @hide 4049 */ 4050 public static void logoutCurrentUser() { 4051 int currentUser = ActivityManager.getCurrentUser(); 4052 if (currentUser != UserHandle.USER_SYSTEM) { 4053 try { 4054 getService().switchUser(UserHandle.USER_SYSTEM); 4055 getService().stopUser(currentUser, /* force= */ false, null); 4056 } catch (RemoteException e) { 4057 e.rethrowFromSystemServer(); 4058 } 4059 } 4060 } 4061 4062 /** {@hide} */ 4063 public static final int FLAG_OR_STOPPED = 1 << 0; 4064 /** {@hide} */ 4065 public static final int FLAG_AND_LOCKED = 1 << 1; 4066 /** {@hide} */ 4067 public static final int FLAG_AND_UNLOCKED = 1 << 2; 4068 /** {@hide} */ 4069 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 4070 4071 /** 4072 * Return whether the given user is actively running. This means that 4073 * the user is in the "started" state, not "stopped" -- it is currently 4074 * allowed to run code through scheduled alarms, receiving broadcasts, 4075 * etc. A started user may be either the current foreground user or a 4076 * background user; the result here does not distinguish between the two. 4077 * @param userId the user's id. Zero indicates the default user. 4078 * @hide 4079 */ 4080 public boolean isUserRunning(int userId) { 4081 try { 4082 return getService().isUserRunning(userId, 0); 4083 } catch (RemoteException e) { 4084 throw e.rethrowFromSystemServer(); 4085 } 4086 } 4087 4088 /** {@hide} */ 4089 public boolean isVrModePackageEnabled(ComponentName component) { 4090 try { 4091 return getService().isVrModePackageEnabled(component); 4092 } catch (RemoteException e) { 4093 throw e.rethrowFromSystemServer(); 4094 } 4095 } 4096 4097 /** 4098 * Perform a system dump of various state associated with the given application 4099 * package name. This call blocks while the dump is being performed, so should 4100 * not be done on a UI thread. The data will be written to the given file 4101 * descriptor as text. 4102 * @param fd The file descriptor that the dump should be written to. The file 4103 * descriptor is <em>not</em> closed by this function; the caller continues to 4104 * own it. 4105 * @param packageName The name of the package that is to be dumped. 4106 */ 4107 @RequiresPermission(Manifest.permission.DUMP) 4108 public void dumpPackageState(FileDescriptor fd, String packageName) { 4109 dumpPackageStateStatic(fd, packageName); 4110 } 4111 4112 /** 4113 * @hide 4114 */ 4115 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 4116 FileOutputStream fout = new FileOutputStream(fd); 4117 PrintWriter pw = new FastPrintWriter(fout); 4118 dumpService(pw, fd, "package", new String[] { packageName }); 4119 pw.println(); 4120 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 4121 "-a", "package", packageName }); 4122 pw.println(); 4123 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 4124 pw.println(); 4125 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 4126 pw.println(); 4127 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 4128 pw.println(); 4129 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 4130 pw.flush(); 4131 } 4132 4133 /** 4134 * @hide 4135 */ 4136 public static boolean isSystemReady() { 4137 if (!sSystemReady) { 4138 if (ActivityThread.isSystem()) { 4139 sSystemReady = 4140 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 4141 } else { 4142 // Since this is being called from outside system server, system should be 4143 // ready by now. 4144 sSystemReady = true; 4145 } 4146 } 4147 return sSystemReady; 4148 } 4149 4150 /** 4151 * @hide 4152 */ 4153 public static void broadcastStickyIntent(Intent intent, int userId) { 4154 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 4155 } 4156 4157 /** 4158 * Convenience for sending a sticky broadcast. For internal use only. 4159 * 4160 * @hide 4161 */ 4162 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 4163 try { 4164 getService().broadcastIntent( 4165 null, intent, null, null, Activity.RESULT_OK, null, null, 4166 null /*permission*/, appOp, null, false, true, userId); 4167 } catch (RemoteException ex) { 4168 } 4169 } 4170 4171 /** 4172 * @hide 4173 */ 4174 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 4175 String tag) { 4176 try { 4177 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 4178 sourceUid, sourcePkg, tag); 4179 } catch (RemoteException ex) { 4180 } 4181 } 4182 4183 /** 4184 * @hide 4185 */ 4186 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 4187 try { 4188 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4189 } catch (RemoteException ex) { 4190 } 4191 } 4192 4193 /** 4194 * @hide 4195 */ 4196 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 4197 try { 4198 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4199 } catch (RemoteException ex) { 4200 } 4201 } 4202 4203 /** 4204 * @hide 4205 */ 4206 public static IActivityManager getService() { 4207 return IActivityManagerSingleton.get(); 4208 } 4209 4210 private static final Singleton<IActivityManager> IActivityManagerSingleton = 4211 new Singleton<IActivityManager>() { 4212 @Override 4213 protected IActivityManager create() { 4214 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 4215 final IActivityManager am = IActivityManager.Stub.asInterface(b); 4216 return am; 4217 } 4218 }; 4219 4220 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 4221 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 4222 IBinder service = ServiceManager.checkService(name); 4223 if (service == null) { 4224 pw.println(" (Service not found)"); 4225 return; 4226 } 4227 TransferPipe tp = null; 4228 try { 4229 pw.flush(); 4230 tp = new TransferPipe(); 4231 tp.setBufferPrefix(" "); 4232 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 4233 tp.go(fd, 10000); 4234 } catch (Throwable e) { 4235 if (tp != null) { 4236 tp.kill(); 4237 } 4238 pw.println("Failure dumping service:"); 4239 e.printStackTrace(pw); 4240 } 4241 } 4242 4243 /** 4244 * Request that the system start watching for the calling process to exceed a pss 4245 * size as given here. Once called, the system will look for any occasions where it 4246 * sees the associated process with a larger pss size and, when this happens, automatically 4247 * pull a heap dump from it and allow the user to share the data. Note that this request 4248 * continues running even if the process is killed and restarted. To remove the watch, 4249 * use {@link #clearWatchHeapLimit()}. 4250 * 4251 * <p>This API only work if the calling process has been marked as 4252 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4253 * (userdebug or eng) build.</p> 4254 * 4255 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4256 * handle heap limit reports themselves.</p> 4257 * 4258 * @param pssSize The size in bytes to set the limit at. 4259 */ 4260 public void setWatchHeapLimit(long pssSize) { 4261 try { 4262 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4263 mContext.getPackageName()); 4264 } catch (RemoteException e) { 4265 throw e.rethrowFromSystemServer(); 4266 } 4267 } 4268 4269 /** 4270 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4271 * If your package has an activity handling this action, it will be launched with the 4272 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4273 * match the activty must support this action and a MIME type of "*/*". 4274 */ 4275 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4276 4277 /** 4278 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4279 */ 4280 public void clearWatchHeapLimit() { 4281 try { 4282 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4283 } catch (RemoteException e) { 4284 throw e.rethrowFromSystemServer(); 4285 } 4286 } 4287 4288 /** 4289 * @hide 4290 */ 4291 public void startLockTaskMode(int taskId) { 4292 try { 4293 getService().startLockTaskModeById(taskId); 4294 } catch (RemoteException e) { 4295 throw e.rethrowFromSystemServer(); 4296 } 4297 } 4298 4299 /** 4300 * @hide 4301 */ 4302 public void stopLockTaskMode() { 4303 try { 4304 getService().stopLockTaskMode(); 4305 } catch (RemoteException e) { 4306 throw e.rethrowFromSystemServer(); 4307 } 4308 } 4309 4310 /** 4311 * Return whether currently in lock task mode. When in this mode 4312 * no new tasks can be created or switched to. 4313 * 4314 * @see Activity#startLockTask() 4315 * 4316 * @deprecated Use {@link #getLockTaskModeState} instead. 4317 */ 4318 @Deprecated 4319 public boolean isInLockTaskMode() { 4320 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4321 } 4322 4323 /** 4324 * Return the current state of task locking. The three possible outcomes 4325 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4326 * and {@link #LOCK_TASK_MODE_PINNED}. 4327 * 4328 * @see Activity#startLockTask() 4329 */ 4330 public int getLockTaskModeState() { 4331 try { 4332 return getService().getLockTaskModeState(); 4333 } catch (RemoteException e) { 4334 throw e.rethrowFromSystemServer(); 4335 } 4336 } 4337 4338 /** 4339 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4340 * thread can be a VR thread in a process at a time, and that thread may be subject to 4341 * restrictions on the amount of time it can run. 4342 * 4343 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4344 * method will return to normal operation, and calling this method will do nothing while 4345 * persistent VR mode is enabled. 4346 * 4347 * To reset the VR thread for an application, a tid of 0 can be passed. 4348 * 4349 * @see android.os.Process#myTid() 4350 * @param tid tid of the VR thread 4351 */ 4352 public static void setVrThread(int tid) { 4353 try { 4354 getService().setVrThread(tid); 4355 } catch (RemoteException e) { 4356 // pass 4357 } 4358 } 4359 4360 /** 4361 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4362 * beyond a single process. Only one thread can be a 4363 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4364 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4365 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4366 * persistent VR thread loses its new scheduling priority; this method must be called again to 4367 * set the persistent thread. 4368 * 4369 * To reset the persistent VR thread, a tid of 0 can be passed. 4370 * 4371 * @see android.os.Process#myTid() 4372 * @param tid tid of the VR thread 4373 * @hide 4374 */ 4375 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4376 public static void setPersistentVrThread(int tid) { 4377 try { 4378 getService().setPersistentVrThread(tid); 4379 } catch (RemoteException e) { 4380 // pass 4381 } 4382 } 4383 4384 /** 4385 * The AppTask allows you to manage your own application's tasks. 4386 * See {@link android.app.ActivityManager#getAppTasks()} 4387 */ 4388 public static class AppTask { 4389 private IAppTask mAppTaskImpl; 4390 4391 /** @hide */ 4392 public AppTask(IAppTask task) { 4393 mAppTaskImpl = task; 4394 } 4395 4396 /** 4397 * Finishes all activities in this task and removes it from the recent tasks list. 4398 */ 4399 public void finishAndRemoveTask() { 4400 try { 4401 mAppTaskImpl.finishAndRemoveTask(); 4402 } catch (RemoteException e) { 4403 throw e.rethrowFromSystemServer(); 4404 } 4405 } 4406 4407 /** 4408 * Get the RecentTaskInfo associated with this task. 4409 * 4410 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4411 */ 4412 public RecentTaskInfo getTaskInfo() { 4413 try { 4414 return mAppTaskImpl.getTaskInfo(); 4415 } catch (RemoteException e) { 4416 throw e.rethrowFromSystemServer(); 4417 } 4418 } 4419 4420 /** 4421 * Bring this task to the foreground. If it contains activities, they will be 4422 * brought to the foreground with it and their instances re-created if needed. 4423 * If it doesn't contain activities, the root activity of the task will be 4424 * re-launched. 4425 */ 4426 public void moveToFront() { 4427 try { 4428 mAppTaskImpl.moveToFront(); 4429 } catch (RemoteException e) { 4430 throw e.rethrowFromSystemServer(); 4431 } 4432 } 4433 4434 /** 4435 * Start an activity in this task. Brings the task to the foreground. If this task 4436 * is not currently active (that is, its id < 0), then a new activity for the given 4437 * Intent will be launched as the root of the task and the task brought to the 4438 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4439 * an activity to launch in a new task, then a new activity for the given Intent will 4440 * be launched on top of the task and the task brought to the foreground. If this 4441 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4442 * or would otherwise be launched in to a new task, then the activity not launched but 4443 * this task be brought to the foreground and a new intent delivered to the top 4444 * activity if appropriate. 4445 * 4446 * <p>In other words, you generally want to use an Intent here that does not specify 4447 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4448 * and let the system do the right thing.</p> 4449 * 4450 * @param intent The Intent describing the new activity to be launched on the task. 4451 * @param options Optional launch options. 4452 * 4453 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4454 */ 4455 public void startActivity(Context context, Intent intent, Bundle options) { 4456 ActivityThread thread = ActivityThread.currentActivityThread(); 4457 thread.getInstrumentation().execStartActivityFromAppTask(context, 4458 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4459 } 4460 4461 /** 4462 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4463 * Intent of this AppTask. 4464 * 4465 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4466 * be set; otherwise, it will be cleared. 4467 */ 4468 public void setExcludeFromRecents(boolean exclude) { 4469 try { 4470 mAppTaskImpl.setExcludeFromRecents(exclude); 4471 } catch (RemoteException e) { 4472 throw e.rethrowFromSystemServer(); 4473 } 4474 } 4475 } 4476} 4477