ActivityManager.java revision 943794bb705f5232d9bac93d154dd87cfbeff9cf
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 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 660 SystemProperties.getBoolean("debug.force_low_ram", false); 661 662 /** @hide */ 663 public static class StackId { 664 /** Invalid stack ID. */ 665 public static final int INVALID_STACK_ID = -1; 666 667 /** First static stack ID. */ 668 public static final int FIRST_STATIC_STACK_ID = 0; 669 670 /** Home activity stack ID. */ 671 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 672 673 /** ID of stack where fullscreen activities are normally launched into. */ 674 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 675 676 /** ID of stack where freeform/resized activities are normally launched into. */ 677 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 678 679 /** ID of stack that occupies a dedicated region of the screen. */ 680 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 681 682 /** ID of stack that always on top (always visible) when it exist. */ 683 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 684 685 /** ID of stack that contains the Recents activity. */ 686 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 687 688 /** ID of stack that contains activities launched by the assistant. */ 689 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 690 691 /** Last static stack stack ID. */ 692 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 693 694 /** Start of ID range used by stacks that are created dynamically. */ 695 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 696 697 public static boolean isStaticStack(int stackId) { 698 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 699 } 700 701 public static boolean isDynamicStack(int stackId) { 702 return stackId >= FIRST_DYNAMIC_STACK_ID; 703 } 704 705 /** 706 * Returns true if the activities contained in the input stack display a shadow around 707 * their border. 708 */ 709 public static boolean hasWindowShadow(int stackId) { 710 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 711 } 712 713 /** 714 * Returns true if the activities contained in the input stack display a decor view. 715 */ 716 public static boolean hasWindowDecor(int stackId) { 717 return stackId == FREEFORM_WORKSPACE_STACK_ID; 718 } 719 720 /** 721 * Returns true if the tasks contained in the stack can be resized independently of the 722 * stack. 723 */ 724 public static boolean isTaskResizeAllowed(int stackId) { 725 return stackId == FREEFORM_WORKSPACE_STACK_ID; 726 } 727 728 /** Returns true if the task bounds should persist across power cycles. */ 729 public static boolean persistTaskBounds(int stackId) { 730 return stackId == FREEFORM_WORKSPACE_STACK_ID; 731 } 732 733 /** 734 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 735 */ 736 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 737 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 738 } 739 740 /** 741 * Returns true if we try to maintain focus in the current stack when the top activity 742 * finishes. 743 */ 744 public static boolean keepFocusInStackIfPossible(int stackId) { 745 return stackId == FREEFORM_WORKSPACE_STACK_ID 746 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 747 } 748 749 /** 750 * Returns true if Stack size is affected by the docked stack changing size. 751 */ 752 public static boolean isResizeableByDockedStack(int stackId) { 753 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 754 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 755 } 756 757 /** 758 * Returns true if the size of tasks in the input stack are affected by the docked stack 759 * changing size. 760 */ 761 public static boolean isTaskResizeableByDockedStack(int stackId) { 762 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 763 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 764 && stackId != ASSISTANT_STACK_ID; 765 } 766 767 /** 768 * Returns true if the input stack is affected by drag resizing. 769 */ 770 public static boolean isStackAffectedByDragResizing(int stackId) { 771 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 772 && stackId != ASSISTANT_STACK_ID; 773 } 774 775 /** 776 * Returns true if the windows of tasks being moved to the target stack from the source 777 * stack should be replaced, meaning that window manager will keep the old window around 778 * until the new is ready. 779 */ 780 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 781 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 782 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 783 } 784 785 /** 786 * Return whether a stackId is a stack containing floating windows. Floating windows 787 * are laid out differently as they are allowed to extend past the display bounds 788 * without overscan insets. 789 */ 790 public static boolean tasksAreFloating(int stackId) { 791 return stackId == FREEFORM_WORKSPACE_STACK_ID 792 || stackId == PINNED_STACK_ID; 793 } 794 795 /** 796 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 797 * are generally fullscreen stacks. 798 */ 799 public static boolean isBackdropToTranslucentActivity(int stackId) { 800 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 801 || stackId == ASSISTANT_STACK_ID; 802 } 803 804 /** 805 * Returns true if animation specs should be constructed for app transition that moves 806 * the task to the specified stack. 807 */ 808 public static boolean useAnimationSpecForAppTransition(int stackId) { 809 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 810 // reboots. 811 return stackId == FREEFORM_WORKSPACE_STACK_ID 812 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 813 || stackId == ASSISTANT_STACK_ID 814 || stackId == DOCKED_STACK_ID 815 || stackId == INVALID_STACK_ID; 816 } 817 818 /** 819 * Returns true if the windows in the stack can receive input keys. 820 */ 821 public static boolean canReceiveKeys(int stackId) { 822 return stackId != PINNED_STACK_ID; 823 } 824 825 /** 826 * Returns true if the stack can be visible above lockscreen. 827 */ 828 public static boolean isAllowedOverLockscreen(int stackId) { 829 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 830 stackId == ASSISTANT_STACK_ID; 831 } 832 833 /** 834 * Returns true if activities from stasks in the given {@param stackId} are allowed to 835 * enter picture-in-picture. 836 */ 837 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 838 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 839 stackId != RECENTS_STACK_ID; 840 } 841 842 public static boolean isAlwaysOnTop(int stackId) { 843 return stackId == PINNED_STACK_ID; 844 } 845 846 /** 847 * Returns true if the top task in the task is allowed to return home when finished and 848 * there are other tasks in the stack. 849 */ 850 public static boolean allowTopTaskToReturnHome(int stackId) { 851 return stackId != PINNED_STACK_ID; 852 } 853 854 /** 855 * Returns true if the stack should be resized to match the bounds specified by 856 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 857 */ 858 public static boolean resizeStackWithLaunchBounds(int stackId) { 859 return stackId == PINNED_STACK_ID; 860 } 861 862 /** 863 * Returns true if any visible windows belonging to apps in this stack should be kept on 864 * screen when the app is killed due to something like the low memory killer. 865 */ 866 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 867 return stackId != PINNED_STACK_ID; 868 } 869 870 /** 871 * Returns true if the backdrop on the client side should match the frame of the window. 872 * Returns false, if the backdrop should be fullscreen. 873 */ 874 public static boolean useWindowFrameForBackdrop(int stackId) { 875 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 876 } 877 878 /** 879 * Returns true if a window from the specified stack with {@param stackId} are normally 880 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 881 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 882 * etc. 883 */ 884 public static boolean normallyFullscreenWindows(int stackId) { 885 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 886 && stackId != DOCKED_STACK_ID; 887 } 888 889 /** 890 * Returns true if the input stack id should only be present on a device that supports 891 * multi-window mode. 892 * @see android.app.ActivityManager#supportsMultiWindow 893 */ 894 public static boolean isMultiWindowStack(int stackId) { 895 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 896 || stackId == DOCKED_STACK_ID; 897 } 898 899 /** 900 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 901 */ 902 public static boolean isHomeOrRecentsStack(int stackId) { 903 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 904 } 905 906 /** 907 * Returns true if activities contained in this stack can request visible behind by 908 * calling {@link Activity#requestVisibleBehind}. 909 * 910 * @deprecated This method's functionality is no longer supported as of 911 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 912 */ 913 @Deprecated 914 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 915 return stackId == FULLSCREEN_WORKSPACE_STACK_ID || 916 stackId == ASSISTANT_STACK_ID; 917 } 918 919 /** 920 * Returns true if this stack may be scaled without resizing, and windows within may need 921 * to be configured as such. 922 */ 923 public static boolean windowsAreScaleable(int stackId) { 924 return stackId == PINNED_STACK_ID; 925 } 926 927 /** 928 * Returns true if windows in this stack should be given move animations by default. 929 */ 930 public static boolean hasMovementAnimations(int stackId) { 931 return stackId != PINNED_STACK_ID; 932 } 933 934 /** Returns true if the input stack and its content can affect the device orientation. */ 935 public static boolean canSpecifyOrientation(int stackId) { 936 return stackId == HOME_STACK_ID 937 || stackId == RECENTS_STACK_ID 938 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 939 || stackId == ASSISTANT_STACK_ID 940 || isDynamicStack(stackId); 941 } 942 } 943 944 /** 945 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 946 * specifies the position of the created docked stack at the top half of the screen if 947 * in portrait mode or at the left half of the screen if in landscape mode. 948 * @hide 949 */ 950 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 951 952 /** 953 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 954 * specifies the position of the created docked stack at the bottom half of the screen if 955 * in portrait mode or at the right half of the screen if in landscape mode. 956 * @hide 957 */ 958 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 959 960 /** 961 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 962 * that the resize doesn't need to preserve the window, and can be skipped if bounds 963 * is unchanged. This mode is used by window manager in most cases. 964 * @hide 965 */ 966 public static final int RESIZE_MODE_SYSTEM = 0; 967 968 /** 969 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 970 * that the resize should preserve the window if possible. 971 * @hide 972 */ 973 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 974 975 /** 976 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 977 * that the resize should be performed even if the bounds appears unchanged. 978 * @hide 979 */ 980 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 981 982 /** 983 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 984 * manager during a screen rotation. 985 * @hide 986 */ 987 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 988 989 /** 990 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 991 * resize is due to a drag action. 992 * @hide 993 */ 994 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 995 996 /** 997 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 998 * that the resize should preserve the window if possible, and should not be skipped 999 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 1000 * is ending. 1001 * @hide 1002 */ 1003 public static final int RESIZE_MODE_USER_FORCED = 1004 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 1005 1006 /** @hide */ 1007 public int getFrontActivityScreenCompatMode() { 1008 try { 1009 return getService().getFrontActivityScreenCompatMode(); 1010 } catch (RemoteException e) { 1011 throw e.rethrowFromSystemServer(); 1012 } 1013 } 1014 1015 /** @hide */ 1016 public void setFrontActivityScreenCompatMode(int mode) { 1017 try { 1018 getService().setFrontActivityScreenCompatMode(mode); 1019 } catch (RemoteException e) { 1020 throw e.rethrowFromSystemServer(); 1021 } 1022 } 1023 1024 /** @hide */ 1025 public int getPackageScreenCompatMode(String packageName) { 1026 try { 1027 return getService().getPackageScreenCompatMode(packageName); 1028 } catch (RemoteException e) { 1029 throw e.rethrowFromSystemServer(); 1030 } 1031 } 1032 1033 /** @hide */ 1034 public void setPackageScreenCompatMode(String packageName, int mode) { 1035 try { 1036 getService().setPackageScreenCompatMode(packageName, mode); 1037 } catch (RemoteException e) { 1038 throw e.rethrowFromSystemServer(); 1039 } 1040 } 1041 1042 /** @hide */ 1043 public boolean getPackageAskScreenCompat(String packageName) { 1044 try { 1045 return getService().getPackageAskScreenCompat(packageName); 1046 } catch (RemoteException e) { 1047 throw e.rethrowFromSystemServer(); 1048 } 1049 } 1050 1051 /** @hide */ 1052 public void setPackageAskScreenCompat(String packageName, boolean ask) { 1053 try { 1054 getService().setPackageAskScreenCompat(packageName, ask); 1055 } catch (RemoteException e) { 1056 throw e.rethrowFromSystemServer(); 1057 } 1058 } 1059 1060 /** 1061 * Return the approximate per-application memory class of the current 1062 * device. This gives you an idea of how hard a memory limit you should 1063 * impose on your application to let the overall system work best. The 1064 * returned value is in megabytes; the baseline Android memory class is 1065 * 16 (which happens to be the Java heap limit of those devices); some 1066 * device with more memory may return 24 or even higher numbers. 1067 */ 1068 public int getMemoryClass() { 1069 return staticGetMemoryClass(); 1070 } 1071 1072 /** @hide */ 1073 static public int staticGetMemoryClass() { 1074 // Really brain dead right now -- just take this from the configured 1075 // vm heap size, and assume it is in megabytes and thus ends with "m". 1076 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1077 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1078 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1079 } 1080 return staticGetLargeMemoryClass(); 1081 } 1082 1083 /** 1084 * Return the approximate per-application memory class of the current 1085 * device when an application is running with a large heap. This is the 1086 * space available for memory-intensive applications; most applications 1087 * should not need this amount of memory, and should instead stay with the 1088 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1089 * This may be the same size as {@link #getMemoryClass()} on memory 1090 * constrained devices, or it may be significantly larger on devices with 1091 * a large amount of available RAM. 1092 * 1093 * <p>The is the size of the application's Dalvik heap if it has 1094 * specified <code>android:largeHeap="true"</code> in its manifest. 1095 */ 1096 public int getLargeMemoryClass() { 1097 return staticGetLargeMemoryClass(); 1098 } 1099 1100 /** @hide */ 1101 static public int staticGetLargeMemoryClass() { 1102 // Really brain dead right now -- just take this from the configured 1103 // vm heap size, and assume it is in megabytes and thus ends with "m". 1104 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1105 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1106 } 1107 1108 /** 1109 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1110 * is ultimately up to the device configuration, but currently it generally means 1111 * something in the class of a 512MB device with about a 800x480 or less screen. 1112 * This is mostly intended to be used by apps to determine whether they should turn 1113 * off certain features that require more RAM. 1114 */ 1115 public boolean isLowRamDevice() { 1116 return isLowRamDeviceStatic(); 1117 } 1118 1119 /** @hide */ 1120 public static boolean isLowRamDeviceStatic() { 1121 return RoSystemProperties.CONFIG_LOW_RAM || 1122 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 1123 } 1124 1125 /** 1126 * Returns true if this is a small battery device. Exactly whether a device is considered to be 1127 * small battery is ultimately up to the device configuration, but currently it generally means 1128 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 1129 * to determine whether certain features should be altered to account for a drastically smaller 1130 * battery. 1131 * @hide 1132 */ 1133 public static boolean isSmallBatteryDevice() { 1134 return RoSystemProperties.CONFIG_SMALL_BATTERY; 1135 } 1136 1137 /** 1138 * Used by persistent processes to determine if they are running on a 1139 * higher-end device so should be okay using hardware drawing acceleration 1140 * (which tends to consume a lot more RAM). 1141 * @hide 1142 */ 1143 static public boolean isHighEndGfx() { 1144 return !isLowRamDeviceStatic() && 1145 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1146 } 1147 1148 /** 1149 * Return the maximum number of recents entries that we will maintain and show. 1150 * @hide 1151 */ 1152 static public int getMaxRecentTasksStatic() { 1153 if (gMaxRecentTasks < 0) { 1154 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1155 } 1156 return gMaxRecentTasks; 1157 } 1158 1159 /** 1160 * Return the default limit on the number of recents that an app can make. 1161 * @hide 1162 */ 1163 static public int getDefaultAppRecentsLimitStatic() { 1164 return getMaxRecentTasksStatic() / 6; 1165 } 1166 1167 /** 1168 * Return the maximum limit on the number of recents that an app can make. 1169 * @hide 1170 */ 1171 static public int getMaxAppRecentsLimitStatic() { 1172 return getMaxRecentTasksStatic() / 2; 1173 } 1174 1175 /** 1176 * Returns true if the system supports at least one form of multi-window. 1177 * E.g. freeform, split-screen, picture-in-picture. 1178 * @hide 1179 */ 1180 static public boolean supportsMultiWindow(Context context) { 1181 // On watches, multi-window is used to present essential system UI, and thus it must be 1182 // supported regardless of device memory characteristics. 1183 boolean isWatch = context.getPackageManager().hasSystemFeature( 1184 PackageManager.FEATURE_WATCH); 1185 return (!isLowRamDeviceStatic() || isWatch) 1186 && Resources.getSystem().getBoolean( 1187 com.android.internal.R.bool.config_supportsMultiWindow); 1188 } 1189 1190 /** 1191 * Returns true if the system supports split screen multi-window. 1192 * @hide 1193 */ 1194 static public boolean supportsSplitScreenMultiWindow(Context context) { 1195 return supportsMultiWindow(context) 1196 && Resources.getSystem().getBoolean( 1197 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1198 } 1199 1200 /** @removed */ 1201 @Deprecated 1202 public static int getMaxNumPictureInPictureActions() { 1203 return 3; 1204 } 1205 1206 /** 1207 * Information you can set and retrieve about the current activity within the recent task list. 1208 */ 1209 public static class TaskDescription implements Parcelable { 1210 /** @hide */ 1211 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1212 private static final String ATTR_TASKDESCRIPTIONLABEL = 1213 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1214 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1215 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1216 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1217 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1218 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1219 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1220 1221 private String mLabel; 1222 private Bitmap mIcon; 1223 private String mIconFilename; 1224 private int mColorPrimary; 1225 private int mColorBackground; 1226 private int mStatusBarColor; 1227 private int mNavigationBarColor; 1228 1229 /** 1230 * Creates the TaskDescription to the specified values. 1231 * 1232 * @param label A label and description of the current state of this task. 1233 * @param icon An icon that represents the current state of this task. 1234 * @param colorPrimary A color to override the theme's primary color. This color must be 1235 * opaque. 1236 */ 1237 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1238 this(label, icon, null, colorPrimary, 0, 0, 0); 1239 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1240 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1241 } 1242 } 1243 1244 /** 1245 * Creates the TaskDescription to the specified values. 1246 * 1247 * @param label A label and description of the current state of this activity. 1248 * @param icon An icon that represents the current state of this activity. 1249 */ 1250 public TaskDescription(String label, Bitmap icon) { 1251 this(label, icon, null, 0, 0, 0, 0); 1252 } 1253 1254 /** 1255 * Creates the TaskDescription to the specified values. 1256 * 1257 * @param label A label and description of the current state of this activity. 1258 */ 1259 public TaskDescription(String label) { 1260 this(label, null, null, 0, 0, 0, 0); 1261 } 1262 1263 /** 1264 * Creates an empty TaskDescription. 1265 */ 1266 public TaskDescription() { 1267 this(null, null, null, 0, 0, 0, 0); 1268 } 1269 1270 /** @hide */ 1271 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1272 int colorBackground, int statusBarColor, int navigationBarColor) { 1273 mLabel = label; 1274 mIcon = icon; 1275 mIconFilename = iconFilename; 1276 mColorPrimary = colorPrimary; 1277 mColorBackground = colorBackground; 1278 mStatusBarColor = statusBarColor; 1279 mNavigationBarColor = navigationBarColor; 1280 } 1281 1282 /** 1283 * Creates a copy of another TaskDescription. 1284 */ 1285 public TaskDescription(TaskDescription td) { 1286 copyFrom(td); 1287 } 1288 1289 /** 1290 * Copies this the values from another TaskDescription. 1291 * @hide 1292 */ 1293 public void copyFrom(TaskDescription other) { 1294 mLabel = other.mLabel; 1295 mIcon = other.mIcon; 1296 mIconFilename = other.mIconFilename; 1297 mColorPrimary = other.mColorPrimary; 1298 mColorBackground = other.mColorBackground; 1299 mStatusBarColor = other.mStatusBarColor; 1300 mNavigationBarColor = other.mNavigationBarColor; 1301 } 1302 1303 /** 1304 * Copies this the values from another TaskDescription, but preserves the hidden fields 1305 * if they weren't set on {@code other} 1306 * @hide 1307 */ 1308 public void copyFromPreserveHiddenFields(TaskDescription other) { 1309 mLabel = other.mLabel; 1310 mIcon = other.mIcon; 1311 mIconFilename = other.mIconFilename; 1312 mColorPrimary = other.mColorPrimary; 1313 if (other.mColorBackground != 0) { 1314 mColorBackground = other.mColorBackground; 1315 } 1316 if (other.mStatusBarColor != 0) { 1317 mStatusBarColor = other.mStatusBarColor; 1318 } 1319 if (other.mNavigationBarColor != 0) { 1320 mNavigationBarColor = other.mNavigationBarColor; 1321 } 1322 } 1323 1324 private TaskDescription(Parcel source) { 1325 readFromParcel(source); 1326 } 1327 1328 /** 1329 * Sets the label for this task description. 1330 * @hide 1331 */ 1332 public void setLabel(String label) { 1333 mLabel = label; 1334 } 1335 1336 /** 1337 * Sets the primary color for this task description. 1338 * @hide 1339 */ 1340 public void setPrimaryColor(int primaryColor) { 1341 // Ensure that the given color is valid 1342 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1343 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1344 } 1345 mColorPrimary = primaryColor; 1346 } 1347 1348 /** 1349 * Sets the background color for this task description. 1350 * @hide 1351 */ 1352 public void setBackgroundColor(int backgroundColor) { 1353 // Ensure that the given color is valid 1354 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1355 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1356 } 1357 mColorBackground = backgroundColor; 1358 } 1359 1360 /** 1361 * @hide 1362 */ 1363 public void setStatusBarColor(int statusBarColor) { 1364 mStatusBarColor = statusBarColor; 1365 } 1366 1367 /** 1368 * @hide 1369 */ 1370 public void setNavigationBarColor(int navigationBarColor) { 1371 mNavigationBarColor = navigationBarColor; 1372 } 1373 1374 /** 1375 * Sets the icon for this task description. 1376 * @hide 1377 */ 1378 public void setIcon(Bitmap icon) { 1379 mIcon = icon; 1380 } 1381 1382 /** 1383 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1384 * bitmap. 1385 * @hide 1386 */ 1387 public void setIconFilename(String iconFilename) { 1388 mIconFilename = iconFilename; 1389 mIcon = null; 1390 } 1391 1392 /** 1393 * @return The label and description of the current state of this task. 1394 */ 1395 public String getLabel() { 1396 return mLabel; 1397 } 1398 1399 /** 1400 * @return The icon that represents the current state of this task. 1401 */ 1402 public Bitmap getIcon() { 1403 if (mIcon != null) { 1404 return mIcon; 1405 } 1406 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1407 } 1408 1409 /** @hide */ 1410 public String getIconFilename() { 1411 return mIconFilename; 1412 } 1413 1414 /** @hide */ 1415 public Bitmap getInMemoryIcon() { 1416 return mIcon; 1417 } 1418 1419 /** @hide */ 1420 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1421 if (iconFilename != null) { 1422 try { 1423 return getService().getTaskDescriptionIcon(iconFilename, 1424 userId); 1425 } catch (RemoteException e) { 1426 throw e.rethrowFromSystemServer(); 1427 } 1428 } 1429 return null; 1430 } 1431 1432 /** 1433 * @return The color override on the theme's primary color. 1434 */ 1435 public int getPrimaryColor() { 1436 return mColorPrimary; 1437 } 1438 1439 /** 1440 * @return The background color. 1441 * @hide 1442 */ 1443 public int getBackgroundColor() { 1444 return mColorBackground; 1445 } 1446 1447 /** 1448 * @hide 1449 */ 1450 public int getStatusBarColor() { 1451 return mStatusBarColor; 1452 } 1453 1454 /** 1455 * @hide 1456 */ 1457 public int getNavigationBarColor() { 1458 return mNavigationBarColor; 1459 } 1460 1461 /** @hide */ 1462 public void saveToXml(XmlSerializer out) throws IOException { 1463 if (mLabel != null) { 1464 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1465 } 1466 if (mColorPrimary != 0) { 1467 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1468 Integer.toHexString(mColorPrimary)); 1469 } 1470 if (mColorBackground != 0) { 1471 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1472 Integer.toHexString(mColorBackground)); 1473 } 1474 if (mIconFilename != null) { 1475 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1476 } 1477 } 1478 1479 /** @hide */ 1480 public void restoreFromXml(String attrName, String attrValue) { 1481 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1482 setLabel(attrValue); 1483 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1484 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1485 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1486 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1487 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1488 setIconFilename(attrValue); 1489 } 1490 } 1491 1492 @Override 1493 public int describeContents() { 1494 return 0; 1495 } 1496 1497 @Override 1498 public void writeToParcel(Parcel dest, int flags) { 1499 if (mLabel == null) { 1500 dest.writeInt(0); 1501 } else { 1502 dest.writeInt(1); 1503 dest.writeString(mLabel); 1504 } 1505 if (mIcon == null) { 1506 dest.writeInt(0); 1507 } else { 1508 dest.writeInt(1); 1509 mIcon.writeToParcel(dest, 0); 1510 } 1511 dest.writeInt(mColorPrimary); 1512 dest.writeInt(mColorBackground); 1513 dest.writeInt(mStatusBarColor); 1514 dest.writeInt(mNavigationBarColor); 1515 if (mIconFilename == null) { 1516 dest.writeInt(0); 1517 } else { 1518 dest.writeInt(1); 1519 dest.writeString(mIconFilename); 1520 } 1521 } 1522 1523 public void readFromParcel(Parcel source) { 1524 mLabel = source.readInt() > 0 ? source.readString() : null; 1525 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1526 mColorPrimary = source.readInt(); 1527 mColorBackground = source.readInt(); 1528 mStatusBarColor = source.readInt(); 1529 mNavigationBarColor = source.readInt(); 1530 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1531 } 1532 1533 public static final Creator<TaskDescription> CREATOR 1534 = new Creator<TaskDescription>() { 1535 public TaskDescription createFromParcel(Parcel source) { 1536 return new TaskDescription(source); 1537 } 1538 public TaskDescription[] newArray(int size) { 1539 return new TaskDescription[size]; 1540 } 1541 }; 1542 1543 @Override 1544 public String toString() { 1545 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1546 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1547 " colorBackground: " + mColorBackground + 1548 " statusBarColor: " + mColorBackground + 1549 " navigationBarColor: " + mNavigationBarColor; 1550 } 1551 } 1552 1553 /** 1554 * Information you can retrieve about tasks that the user has most recently 1555 * started or visited. 1556 */ 1557 public static class RecentTaskInfo implements Parcelable { 1558 /** 1559 * If this task is currently running, this is the identifier for it. 1560 * If it is not running, this will be -1. 1561 */ 1562 public int id; 1563 1564 /** 1565 * The true identifier of this task, valid even if it is not running. 1566 */ 1567 public int persistentId; 1568 1569 /** 1570 * The original Intent used to launch the task. You can use this 1571 * Intent to re-launch the task (if it is no longer running) or bring 1572 * the current task to the front. 1573 */ 1574 public Intent baseIntent; 1575 1576 /** 1577 * If this task was started from an alias, this is the actual 1578 * activity component that was initially started; the component of 1579 * the baseIntent in this case is the name of the actual activity 1580 * implementation that the alias referred to. Otherwise, this is null. 1581 */ 1582 public ComponentName origActivity; 1583 1584 /** 1585 * The actual activity component that started the task. 1586 * @hide 1587 */ 1588 @Nullable 1589 public ComponentName realActivity; 1590 1591 /** 1592 * Description of the task's last state. 1593 */ 1594 public CharSequence description; 1595 1596 /** 1597 * The id of the ActivityStack this Task was on most recently. 1598 * @hide 1599 */ 1600 public int stackId; 1601 1602 /** 1603 * The id of the user the task was running as. 1604 * @hide 1605 */ 1606 public int userId; 1607 1608 /** 1609 * The first time this task was active. 1610 * @hide 1611 */ 1612 public long firstActiveTime; 1613 1614 /** 1615 * The last time this task was active. 1616 * @hide 1617 */ 1618 public long lastActiveTime; 1619 1620 /** 1621 * The recent activity values for the highest activity in the stack to have set the values. 1622 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1623 */ 1624 public TaskDescription taskDescription; 1625 1626 /** 1627 * Task affiliation for grouping with other tasks. 1628 */ 1629 public int affiliatedTaskId; 1630 1631 /** 1632 * Task affiliation color of the source task with the affiliated task id. 1633 * 1634 * @hide 1635 */ 1636 public int affiliatedTaskColor; 1637 1638 /** 1639 * The component launched as the first activity in the task. 1640 * This can be considered the "application" of this task. 1641 */ 1642 public ComponentName baseActivity; 1643 1644 /** 1645 * The activity component at the top of the history stack of the task. 1646 * This is what the user is currently doing. 1647 */ 1648 public ComponentName topActivity; 1649 1650 /** 1651 * Number of activities in this task. 1652 */ 1653 public int numActivities; 1654 1655 /** 1656 * The bounds of the task. 1657 * @hide 1658 */ 1659 public Rect bounds; 1660 1661 /** 1662 * True if the task can go in the docked stack. 1663 * @hide 1664 */ 1665 public boolean supportsSplitScreenMultiWindow; 1666 1667 /** 1668 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1669 * @hide 1670 */ 1671 public int resizeMode; 1672 1673 public RecentTaskInfo() { 1674 } 1675 1676 @Override 1677 public int describeContents() { 1678 return 0; 1679 } 1680 1681 @Override 1682 public void writeToParcel(Parcel dest, int flags) { 1683 dest.writeInt(id); 1684 dest.writeInt(persistentId); 1685 if (baseIntent != null) { 1686 dest.writeInt(1); 1687 baseIntent.writeToParcel(dest, 0); 1688 } else { 1689 dest.writeInt(0); 1690 } 1691 ComponentName.writeToParcel(origActivity, dest); 1692 ComponentName.writeToParcel(realActivity, dest); 1693 TextUtils.writeToParcel(description, dest, 1694 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1695 if (taskDescription != null) { 1696 dest.writeInt(1); 1697 taskDescription.writeToParcel(dest, 0); 1698 } else { 1699 dest.writeInt(0); 1700 } 1701 dest.writeInt(stackId); 1702 dest.writeInt(userId); 1703 dest.writeLong(firstActiveTime); 1704 dest.writeLong(lastActiveTime); 1705 dest.writeInt(affiliatedTaskId); 1706 dest.writeInt(affiliatedTaskColor); 1707 ComponentName.writeToParcel(baseActivity, dest); 1708 ComponentName.writeToParcel(topActivity, dest); 1709 dest.writeInt(numActivities); 1710 if (bounds != null) { 1711 dest.writeInt(1); 1712 bounds.writeToParcel(dest, 0); 1713 } else { 1714 dest.writeInt(0); 1715 } 1716 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1717 dest.writeInt(resizeMode); 1718 } 1719 1720 public void readFromParcel(Parcel source) { 1721 id = source.readInt(); 1722 persistentId = source.readInt(); 1723 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1724 origActivity = ComponentName.readFromParcel(source); 1725 realActivity = ComponentName.readFromParcel(source); 1726 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1727 taskDescription = source.readInt() > 0 ? 1728 TaskDescription.CREATOR.createFromParcel(source) : null; 1729 stackId = source.readInt(); 1730 userId = source.readInt(); 1731 firstActiveTime = source.readLong(); 1732 lastActiveTime = source.readLong(); 1733 affiliatedTaskId = source.readInt(); 1734 affiliatedTaskColor = source.readInt(); 1735 baseActivity = ComponentName.readFromParcel(source); 1736 topActivity = ComponentName.readFromParcel(source); 1737 numActivities = source.readInt(); 1738 bounds = source.readInt() > 0 ? 1739 Rect.CREATOR.createFromParcel(source) : null; 1740 supportsSplitScreenMultiWindow = source.readInt() == 1; 1741 resizeMode = source.readInt(); 1742 } 1743 1744 public static final Creator<RecentTaskInfo> CREATOR 1745 = new Creator<RecentTaskInfo>() { 1746 public RecentTaskInfo createFromParcel(Parcel source) { 1747 return new RecentTaskInfo(source); 1748 } 1749 public RecentTaskInfo[] newArray(int size) { 1750 return new RecentTaskInfo[size]; 1751 } 1752 }; 1753 1754 private RecentTaskInfo(Parcel source) { 1755 readFromParcel(source); 1756 } 1757 } 1758 1759 /** 1760 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1761 * that have set their 1762 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1763 */ 1764 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1765 1766 /** 1767 * Provides a list that does not contain any 1768 * recent tasks that currently are not available to the user. 1769 */ 1770 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1771 1772 /** 1773 * Provides a list that contains recent tasks for all 1774 * profiles of a user. 1775 * @hide 1776 */ 1777 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1778 1779 /** 1780 * Ignores all tasks that are on the home stack. 1781 * @hide 1782 */ 1783 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1784 1785 /** 1786 * Ignores the top task in the docked stack. 1787 * @hide 1788 */ 1789 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1790 1791 /** 1792 * Ignores all tasks that are on the pinned stack. 1793 * @hide 1794 */ 1795 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1796 1797 /** 1798 * <p></p>Return a list of the tasks that the user has recently launched, with 1799 * the most recent being first and older ones after in order. 1800 * 1801 * <p><b>Note: this method is only intended for debugging and presenting 1802 * task management user interfaces</b>. This should never be used for 1803 * core logic in an application, such as deciding between different 1804 * behaviors based on the information found here. Such uses are 1805 * <em>not</em> supported, and will likely break in the future. For 1806 * example, if multiple applications can be actively running at the 1807 * same time, assumptions made about the meaning of the data here for 1808 * purposes of control flow will be incorrect.</p> 1809 * 1810 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1811 * no longer available to third party applications: the introduction of 1812 * document-centric recents means 1813 * it can leak personal information to the caller. For backwards compatibility, 1814 * it will still return a small subset of its data: at least the caller's 1815 * own tasks (though see {@link #getAppTasks()} for the correct supported 1816 * way to retrieve that information), and possibly some other tasks 1817 * such as home that are known to not be sensitive. 1818 * 1819 * @param maxNum The maximum number of entries to return in the list. The 1820 * actual number returned may be smaller, depending on how many tasks the 1821 * user has started and the maximum number the system can remember. 1822 * @param flags Information about what to return. May be any combination 1823 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1824 * 1825 * @return Returns a list of RecentTaskInfo records describing each of 1826 * the recent tasks. 1827 */ 1828 @Deprecated 1829 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1830 throws SecurityException { 1831 try { 1832 return getService().getRecentTasks(maxNum, 1833 flags, UserHandle.myUserId()).getList(); 1834 } catch (RemoteException e) { 1835 throw e.rethrowFromSystemServer(); 1836 } 1837 } 1838 1839 /** 1840 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1841 * specific user. It requires holding 1842 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1843 * @param maxNum The maximum number of entries to return in the list. The 1844 * actual number returned may be smaller, depending on how many tasks the 1845 * user has started and the maximum number the system can remember. 1846 * @param flags Information about what to return. May be any combination 1847 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1848 * 1849 * @return Returns a list of RecentTaskInfo records describing each of 1850 * the recent tasks. Most recently activated tasks go first. 1851 * 1852 * @hide 1853 */ 1854 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1855 throws SecurityException { 1856 try { 1857 return getService().getRecentTasks(maxNum, 1858 flags, userId).getList(); 1859 } catch (RemoteException e) { 1860 throw e.rethrowFromSystemServer(); 1861 } 1862 } 1863 1864 /** 1865 * Information you can retrieve about a particular task that is currently 1866 * "running" in the system. Note that a running task does not mean the 1867 * given task actually has a process it is actively running in; it simply 1868 * means that the user has gone to it and never closed it, but currently 1869 * the system may have killed its process and is only holding on to its 1870 * last state in order to restart it when the user returns. 1871 */ 1872 public static class RunningTaskInfo implements Parcelable { 1873 /** 1874 * A unique identifier for this task. 1875 */ 1876 public int id; 1877 1878 /** 1879 * The stack that currently contains this task. 1880 * @hide 1881 */ 1882 public int stackId; 1883 1884 /** 1885 * The component launched as the first activity in the task. This can 1886 * be considered the "application" of this task. 1887 */ 1888 public ComponentName baseActivity; 1889 1890 /** 1891 * The activity component at the top of the history stack of the task. 1892 * This is what the user is currently doing. 1893 */ 1894 public ComponentName topActivity; 1895 1896 /** 1897 * Thumbnail representation of the task's current state. Currently 1898 * always null. 1899 */ 1900 public Bitmap thumbnail; 1901 1902 /** 1903 * Description of the task's current state. 1904 */ 1905 public CharSequence description; 1906 1907 /** 1908 * Number of activities in this task. 1909 */ 1910 public int numActivities; 1911 1912 /** 1913 * Number of activities that are currently running (not stopped 1914 * and persisted) in this task. 1915 */ 1916 public int numRunning; 1917 1918 /** 1919 * Last time task was run. For sorting. 1920 * @hide 1921 */ 1922 public long lastActiveTime; 1923 1924 /** 1925 * True if the task can go in the docked stack. 1926 * @hide 1927 */ 1928 public boolean supportsSplitScreenMultiWindow; 1929 1930 /** 1931 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1932 * @hide 1933 */ 1934 public int resizeMode; 1935 1936 public RunningTaskInfo() { 1937 } 1938 1939 public int describeContents() { 1940 return 0; 1941 } 1942 1943 public void writeToParcel(Parcel dest, int flags) { 1944 dest.writeInt(id); 1945 dest.writeInt(stackId); 1946 ComponentName.writeToParcel(baseActivity, dest); 1947 ComponentName.writeToParcel(topActivity, dest); 1948 if (thumbnail != null) { 1949 dest.writeInt(1); 1950 thumbnail.writeToParcel(dest, 0); 1951 } else { 1952 dest.writeInt(0); 1953 } 1954 TextUtils.writeToParcel(description, dest, 1955 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1956 dest.writeInt(numActivities); 1957 dest.writeInt(numRunning); 1958 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1959 dest.writeInt(resizeMode); 1960 } 1961 1962 public void readFromParcel(Parcel source) { 1963 id = source.readInt(); 1964 stackId = source.readInt(); 1965 baseActivity = ComponentName.readFromParcel(source); 1966 topActivity = ComponentName.readFromParcel(source); 1967 if (source.readInt() != 0) { 1968 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1969 } else { 1970 thumbnail = null; 1971 } 1972 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1973 numActivities = source.readInt(); 1974 numRunning = source.readInt(); 1975 supportsSplitScreenMultiWindow = source.readInt() != 0; 1976 resizeMode = source.readInt(); 1977 } 1978 1979 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1980 public RunningTaskInfo createFromParcel(Parcel source) { 1981 return new RunningTaskInfo(source); 1982 } 1983 public RunningTaskInfo[] newArray(int size) { 1984 return new RunningTaskInfo[size]; 1985 } 1986 }; 1987 1988 private RunningTaskInfo(Parcel source) { 1989 readFromParcel(source); 1990 } 1991 } 1992 1993 /** 1994 * Get the list of tasks associated with the calling application. 1995 * 1996 * @return The list of tasks associated with the application making this call. 1997 * @throws SecurityException 1998 */ 1999 public List<ActivityManager.AppTask> getAppTasks() { 2000 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 2001 List<IBinder> appTasks; 2002 try { 2003 appTasks = getService().getAppTasks(mContext.getPackageName()); 2004 } catch (RemoteException e) { 2005 throw e.rethrowFromSystemServer(); 2006 } 2007 int numAppTasks = appTasks.size(); 2008 for (int i = 0; i < numAppTasks; i++) { 2009 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 2010 } 2011 return tasks; 2012 } 2013 2014 /** 2015 * Return the current design dimensions for {@link AppTask} thumbnails, for use 2016 * with {@link #addAppTask}. 2017 */ 2018 public Size getAppTaskThumbnailSize() { 2019 synchronized (this) { 2020 ensureAppTaskThumbnailSizeLocked(); 2021 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 2022 } 2023 } 2024 2025 private void ensureAppTaskThumbnailSizeLocked() { 2026 if (mAppTaskThumbnailSize == null) { 2027 try { 2028 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 2029 } catch (RemoteException e) { 2030 throw e.rethrowFromSystemServer(); 2031 } 2032 } 2033 } 2034 2035 /** 2036 * Add a new {@link AppTask} for the calling application. This will create a new 2037 * recents entry that is added to the <b>end</b> of all existing recents. 2038 * 2039 * @param activity The activity that is adding the entry. This is used to help determine 2040 * the context that the new recents entry will be in. 2041 * @param intent The Intent that describes the recents entry. This is the same Intent that 2042 * you would have used to launch the activity for it. In generally you will want to set 2043 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 2044 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 2045 * entry will exist without an activity, so it doesn't make sense to not retain it when 2046 * its activity disappears. The given Intent here also must have an explicit ComponentName 2047 * set on it. 2048 * @param description Optional additional description information. 2049 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 2050 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 2051 * recreated in your process, probably in a way you don't like, before the recents entry 2052 * is added. 2053 * 2054 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 2055 * most likely cause of failure is that there is no more room for more tasks for your app. 2056 */ 2057 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 2058 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 2059 Point size; 2060 synchronized (this) { 2061 ensureAppTaskThumbnailSizeLocked(); 2062 size = mAppTaskThumbnailSize; 2063 } 2064 final int tw = thumbnail.getWidth(); 2065 final int th = thumbnail.getHeight(); 2066 if (tw != size.x || th != size.y) { 2067 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 2068 2069 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 2070 float scale; 2071 float dx = 0, dy = 0; 2072 if (tw * size.x > size.y * th) { 2073 scale = (float) size.x / (float) th; 2074 dx = (size.y - tw * scale) * 0.5f; 2075 } else { 2076 scale = (float) size.y / (float) tw; 2077 dy = (size.x - th * scale) * 0.5f; 2078 } 2079 Matrix matrix = new Matrix(); 2080 matrix.setScale(scale, scale); 2081 matrix.postTranslate((int) (dx + 0.5f), 0); 2082 2083 Canvas canvas = new Canvas(bm); 2084 canvas.drawBitmap(thumbnail, matrix, null); 2085 canvas.setBitmap(null); 2086 2087 thumbnail = bm; 2088 } 2089 if (description == null) { 2090 description = new TaskDescription(); 2091 } 2092 try { 2093 return getService().addAppTask(activity.getActivityToken(), 2094 intent, description, thumbnail); 2095 } catch (RemoteException e) { 2096 throw e.rethrowFromSystemServer(); 2097 } 2098 } 2099 2100 /** 2101 * Return a list of the tasks that are currently running, with 2102 * the most recent being first and older ones after in order. Note that 2103 * "running" does not mean any of the task's code is currently loaded or 2104 * activity -- the task may have been frozen by the system, so that it 2105 * can be restarted in its previous state when next brought to the 2106 * foreground. 2107 * 2108 * <p><b>Note: this method is only intended for debugging and presenting 2109 * task management user interfaces</b>. This should never be used for 2110 * core logic in an application, such as deciding between different 2111 * behaviors based on the information found here. Such uses are 2112 * <em>not</em> supported, and will likely break in the future. For 2113 * example, if multiple applications can be actively running at the 2114 * same time, assumptions made about the meaning of the data here for 2115 * purposes of control flow will be incorrect.</p> 2116 * 2117 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 2118 * is no longer available to third party 2119 * applications: the introduction of document-centric recents means 2120 * it can leak person information to the caller. For backwards compatibility, 2121 * it will still retu rn a small subset of its data: at least the caller's 2122 * own tasks, and possibly some other tasks 2123 * such as home that are known to not be sensitive. 2124 * 2125 * @param maxNum The maximum number of entries to return in the list. The 2126 * actual number returned may be smaller, depending on how many tasks the 2127 * user has started. 2128 * 2129 * @return Returns a list of RunningTaskInfo records describing each of 2130 * the running tasks. 2131 */ 2132 @Deprecated 2133 public List<RunningTaskInfo> getRunningTasks(int maxNum) 2134 throws SecurityException { 2135 try { 2136 return getService().getTasks(maxNum, 0); 2137 } catch (RemoteException e) { 2138 throw e.rethrowFromSystemServer(); 2139 } 2140 } 2141 2142 /** 2143 * Completely remove the given task. 2144 * 2145 * @param taskId Identifier of the task to be removed. 2146 * @return Returns true if the given task was found and removed. 2147 * 2148 * @hide 2149 */ 2150 public boolean removeTask(int taskId) throws SecurityException { 2151 try { 2152 return getService().removeTask(taskId); 2153 } catch (RemoteException e) { 2154 throw e.rethrowFromSystemServer(); 2155 } 2156 } 2157 2158 /** 2159 * Metadata related to the {@link TaskThumbnail}. 2160 * 2161 * @hide 2162 */ 2163 public static class TaskThumbnailInfo implements Parcelable { 2164 /** @hide */ 2165 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2166 private static final String ATTR_TASK_WIDTH = 2167 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2168 private static final String ATTR_TASK_HEIGHT = 2169 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2170 private static final String ATTR_SCREEN_ORIENTATION = 2171 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2172 2173 public int taskWidth; 2174 public int taskHeight; 2175 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2176 2177 public TaskThumbnailInfo() { 2178 // Do nothing 2179 } 2180 2181 private TaskThumbnailInfo(Parcel source) { 2182 readFromParcel(source); 2183 } 2184 2185 /** 2186 * Resets this info state to the initial state. 2187 * @hide 2188 */ 2189 public void reset() { 2190 taskWidth = 0; 2191 taskHeight = 0; 2192 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2193 } 2194 2195 /** 2196 * Copies from another ThumbnailInfo. 2197 */ 2198 public void copyFrom(TaskThumbnailInfo o) { 2199 taskWidth = o.taskWidth; 2200 taskHeight = o.taskHeight; 2201 screenOrientation = o.screenOrientation; 2202 } 2203 2204 /** @hide */ 2205 public void saveToXml(XmlSerializer out) throws IOException { 2206 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2207 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2208 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2209 } 2210 2211 /** @hide */ 2212 public void restoreFromXml(String attrName, String attrValue) { 2213 if (ATTR_TASK_WIDTH.equals(attrName)) { 2214 taskWidth = Integer.parseInt(attrValue); 2215 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2216 taskHeight = Integer.parseInt(attrValue); 2217 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2218 screenOrientation = Integer.parseInt(attrValue); 2219 } 2220 } 2221 2222 public int describeContents() { 2223 return 0; 2224 } 2225 2226 public void writeToParcel(Parcel dest, int flags) { 2227 dest.writeInt(taskWidth); 2228 dest.writeInt(taskHeight); 2229 dest.writeInt(screenOrientation); 2230 } 2231 2232 public void readFromParcel(Parcel source) { 2233 taskWidth = source.readInt(); 2234 taskHeight = source.readInt(); 2235 screenOrientation = source.readInt(); 2236 } 2237 2238 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2239 public TaskThumbnailInfo createFromParcel(Parcel source) { 2240 return new TaskThumbnailInfo(source); 2241 } 2242 public TaskThumbnailInfo[] newArray(int size) { 2243 return new TaskThumbnailInfo[size]; 2244 } 2245 }; 2246 } 2247 2248 /** @hide */ 2249 public static class TaskThumbnail implements Parcelable { 2250 public Bitmap mainThumbnail; 2251 public ParcelFileDescriptor thumbnailFileDescriptor; 2252 public TaskThumbnailInfo thumbnailInfo; 2253 2254 public TaskThumbnail() { 2255 } 2256 2257 private TaskThumbnail(Parcel source) { 2258 readFromParcel(source); 2259 } 2260 2261 public int describeContents() { 2262 if (thumbnailFileDescriptor != null) { 2263 return thumbnailFileDescriptor.describeContents(); 2264 } 2265 return 0; 2266 } 2267 2268 public void writeToParcel(Parcel dest, int flags) { 2269 if (mainThumbnail != null) { 2270 dest.writeInt(1); 2271 mainThumbnail.writeToParcel(dest, flags); 2272 } else { 2273 dest.writeInt(0); 2274 } 2275 if (thumbnailFileDescriptor != null) { 2276 dest.writeInt(1); 2277 thumbnailFileDescriptor.writeToParcel(dest, flags); 2278 } else { 2279 dest.writeInt(0); 2280 } 2281 if (thumbnailInfo != null) { 2282 dest.writeInt(1); 2283 thumbnailInfo.writeToParcel(dest, flags); 2284 } else { 2285 dest.writeInt(0); 2286 } 2287 } 2288 2289 public void readFromParcel(Parcel source) { 2290 if (source.readInt() != 0) { 2291 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2292 } else { 2293 mainThumbnail = null; 2294 } 2295 if (source.readInt() != 0) { 2296 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2297 } else { 2298 thumbnailFileDescriptor = null; 2299 } 2300 if (source.readInt() != 0) { 2301 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2302 } else { 2303 thumbnailInfo = null; 2304 } 2305 } 2306 2307 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2308 public TaskThumbnail createFromParcel(Parcel source) { 2309 return new TaskThumbnail(source); 2310 } 2311 public TaskThumbnail[] newArray(int size) { 2312 return new TaskThumbnail[size]; 2313 } 2314 }; 2315 } 2316 2317 /** 2318 * Represents a task snapshot. 2319 * @hide 2320 */ 2321 public static class TaskSnapshot implements Parcelable { 2322 2323 private final GraphicBuffer mSnapshot; 2324 private final int mOrientation; 2325 private final Rect mContentInsets; 2326 private final boolean mReducedResolution; 2327 private final float mScale; 2328 2329 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2330 boolean reducedResolution, float scale) { 2331 mSnapshot = snapshot; 2332 mOrientation = orientation; 2333 mContentInsets = new Rect(contentInsets); 2334 mReducedResolution = reducedResolution; 2335 mScale = scale; 2336 } 2337 2338 private TaskSnapshot(Parcel source) { 2339 mSnapshot = source.readParcelable(null /* classLoader */); 2340 mOrientation = source.readInt(); 2341 mContentInsets = source.readParcelable(null /* classLoader */); 2342 mReducedResolution = source.readBoolean(); 2343 mScale = source.readFloat(); 2344 } 2345 2346 /** 2347 * @return The graphic buffer representing the screenshot. 2348 */ 2349 public GraphicBuffer getSnapshot() { 2350 return mSnapshot; 2351 } 2352 2353 /** 2354 * @return The screen orientation the screenshot was taken in. 2355 */ 2356 public int getOrientation() { 2357 return mOrientation; 2358 } 2359 2360 /** 2361 * @return The system/content insets on the snapshot. These can be clipped off in order to 2362 * remove any areas behind system bars in the snapshot. 2363 */ 2364 public Rect getContentInsets() { 2365 return mContentInsets; 2366 } 2367 2368 /** 2369 * @return Whether this snapshot is a down-sampled version of the full resolution. 2370 */ 2371 public boolean isReducedResolution() { 2372 return mReducedResolution; 2373 } 2374 2375 /** 2376 * @return The scale this snapshot was taken in. 2377 */ 2378 public float getScale() { 2379 return mScale; 2380 } 2381 2382 @Override 2383 public int describeContents() { 2384 return 0; 2385 } 2386 2387 @Override 2388 public void writeToParcel(Parcel dest, int flags) { 2389 dest.writeParcelable(mSnapshot, 0); 2390 dest.writeInt(mOrientation); 2391 dest.writeParcelable(mContentInsets, 0); 2392 dest.writeBoolean(mReducedResolution); 2393 dest.writeFloat(mScale); 2394 } 2395 2396 @Override 2397 public String toString() { 2398 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2399 + " mContentInsets=" + mContentInsets.toShortString() 2400 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2401 } 2402 2403 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2404 public TaskSnapshot createFromParcel(Parcel source) { 2405 return new TaskSnapshot(source); 2406 } 2407 public TaskSnapshot[] newArray(int size) { 2408 return new TaskSnapshot[size]; 2409 } 2410 }; 2411 } 2412 2413 /** @hide */ 2414 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2415 try { 2416 return getService().getTaskThumbnail(id); 2417 } catch (RemoteException e) { 2418 throw e.rethrowFromSystemServer(); 2419 } 2420 } 2421 2422 /** @hide */ 2423 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2424 MOVE_TASK_WITH_HOME, 2425 MOVE_TASK_NO_USER_ACTION, 2426 }) 2427 @Retention(RetentionPolicy.SOURCE) 2428 public @interface MoveTaskFlags {} 2429 2430 /** 2431 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2432 * activity along with the task, so it is positioned immediately behind 2433 * the task. 2434 */ 2435 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2436 2437 /** 2438 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2439 * user-instigated action, so the current activity will not receive a 2440 * hint that the user is leaving. 2441 */ 2442 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2443 2444 /** 2445 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2446 * with a null options argument. 2447 * 2448 * @param taskId The identifier of the task to be moved, as found in 2449 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2450 * @param flags Additional operational flags. 2451 */ 2452 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2453 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2454 moveTaskToFront(taskId, flags, null); 2455 } 2456 2457 /** 2458 * Ask that the task associated with a given task ID be moved to the 2459 * front of the stack, so it is now visible to the user. 2460 * 2461 * @param taskId The identifier of the task to be moved, as found in 2462 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2463 * @param flags Additional operational flags. 2464 * @param options Additional options for the operation, either null or 2465 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2466 * Context.startActivity(Intent, Bundle)}. 2467 */ 2468 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2469 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2470 try { 2471 getService().moveTaskToFront(taskId, flags, options); 2472 } catch (RemoteException e) { 2473 throw e.rethrowFromSystemServer(); 2474 } 2475 } 2476 2477 /** 2478 * Information you can retrieve about a particular Service that is 2479 * currently running in the system. 2480 */ 2481 public static class RunningServiceInfo implements Parcelable { 2482 /** 2483 * The service component. 2484 */ 2485 public ComponentName service; 2486 2487 /** 2488 * If non-zero, this is the process the service is running in. 2489 */ 2490 public int pid; 2491 2492 /** 2493 * The UID that owns this service. 2494 */ 2495 public int uid; 2496 2497 /** 2498 * The name of the process this service runs in. 2499 */ 2500 public String process; 2501 2502 /** 2503 * Set to true if the service has asked to run as a foreground process. 2504 */ 2505 public boolean foreground; 2506 2507 /** 2508 * The time when the service was first made active, either by someone 2509 * starting or binding to it. This 2510 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2511 */ 2512 public long activeSince; 2513 2514 /** 2515 * Set to true if this service has been explicitly started. 2516 */ 2517 public boolean started; 2518 2519 /** 2520 * Number of clients connected to the service. 2521 */ 2522 public int clientCount; 2523 2524 /** 2525 * Number of times the service's process has crashed while the service 2526 * is running. 2527 */ 2528 public int crashCount; 2529 2530 /** 2531 * The time when there was last activity in the service (either 2532 * explicit requests to start it or clients binding to it). This 2533 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2534 */ 2535 public long lastActivityTime; 2536 2537 /** 2538 * If non-zero, this service is not currently running, but scheduled to 2539 * restart at the given time. 2540 */ 2541 public long restarting; 2542 2543 /** 2544 * Bit for {@link #flags}: set if this service has been 2545 * explicitly started. 2546 */ 2547 public static final int FLAG_STARTED = 1<<0; 2548 2549 /** 2550 * Bit for {@link #flags}: set if the service has asked to 2551 * run as a foreground process. 2552 */ 2553 public static final int FLAG_FOREGROUND = 1<<1; 2554 2555 /** 2556 * Bit for {@link #flags}: set if the service is running in a 2557 * core system process. 2558 */ 2559 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2560 2561 /** 2562 * Bit for {@link #flags}: set if the service is running in a 2563 * persistent process. 2564 */ 2565 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2566 2567 /** 2568 * Running flags. 2569 */ 2570 public int flags; 2571 2572 /** 2573 * For special services that are bound to by system code, this is 2574 * the package that holds the binding. 2575 */ 2576 public String clientPackage; 2577 2578 /** 2579 * For special services that are bound to by system code, this is 2580 * a string resource providing a user-visible label for who the 2581 * client is. 2582 */ 2583 public int clientLabel; 2584 2585 public RunningServiceInfo() { 2586 } 2587 2588 public int describeContents() { 2589 return 0; 2590 } 2591 2592 public void writeToParcel(Parcel dest, int flags) { 2593 ComponentName.writeToParcel(service, dest); 2594 dest.writeInt(pid); 2595 dest.writeInt(uid); 2596 dest.writeString(process); 2597 dest.writeInt(foreground ? 1 : 0); 2598 dest.writeLong(activeSince); 2599 dest.writeInt(started ? 1 : 0); 2600 dest.writeInt(clientCount); 2601 dest.writeInt(crashCount); 2602 dest.writeLong(lastActivityTime); 2603 dest.writeLong(restarting); 2604 dest.writeInt(this.flags); 2605 dest.writeString(clientPackage); 2606 dest.writeInt(clientLabel); 2607 } 2608 2609 public void readFromParcel(Parcel source) { 2610 service = ComponentName.readFromParcel(source); 2611 pid = source.readInt(); 2612 uid = source.readInt(); 2613 process = source.readString(); 2614 foreground = source.readInt() != 0; 2615 activeSince = source.readLong(); 2616 started = source.readInt() != 0; 2617 clientCount = source.readInt(); 2618 crashCount = source.readInt(); 2619 lastActivityTime = source.readLong(); 2620 restarting = source.readLong(); 2621 flags = source.readInt(); 2622 clientPackage = source.readString(); 2623 clientLabel = source.readInt(); 2624 } 2625 2626 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2627 public RunningServiceInfo createFromParcel(Parcel source) { 2628 return new RunningServiceInfo(source); 2629 } 2630 public RunningServiceInfo[] newArray(int size) { 2631 return new RunningServiceInfo[size]; 2632 } 2633 }; 2634 2635 private RunningServiceInfo(Parcel source) { 2636 readFromParcel(source); 2637 } 2638 } 2639 2640 /** 2641 * Return a list of the services that are currently running. 2642 * 2643 * <p><b>Note: this method is only intended for debugging or implementing 2644 * service management type user interfaces.</b></p> 2645 * 2646 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2647 * is no longer available to third party applications. For backwards compatibility, 2648 * it will still return the caller's own services. 2649 * 2650 * @param maxNum The maximum number of entries to return in the list. The 2651 * actual number returned may be smaller, depending on how many services 2652 * are running. 2653 * 2654 * @return Returns a list of RunningServiceInfo records describing each of 2655 * the running tasks. 2656 */ 2657 @Deprecated 2658 public List<RunningServiceInfo> getRunningServices(int maxNum) 2659 throws SecurityException { 2660 try { 2661 return getService() 2662 .getServices(maxNum, 0); 2663 } catch (RemoteException e) { 2664 throw e.rethrowFromSystemServer(); 2665 } 2666 } 2667 2668 /** 2669 * Returns a PendingIntent you can start to show a control panel for the 2670 * given running service. If the service does not have a control panel, 2671 * null is returned. 2672 */ 2673 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2674 throws SecurityException { 2675 try { 2676 return getService() 2677 .getRunningServiceControlPanel(service); 2678 } catch (RemoteException e) { 2679 throw e.rethrowFromSystemServer(); 2680 } 2681 } 2682 2683 /** 2684 * Information you can retrieve about the available memory through 2685 * {@link ActivityManager#getMemoryInfo}. 2686 */ 2687 public static class MemoryInfo implements Parcelable { 2688 /** 2689 * The available memory on the system. This number should not 2690 * be considered absolute: due to the nature of the kernel, a significant 2691 * portion of this memory is actually in use and needed for the overall 2692 * system to run well. 2693 */ 2694 public long availMem; 2695 2696 /** 2697 * The total memory accessible by the kernel. This is basically the 2698 * RAM size of the device, not including below-kernel fixed allocations 2699 * like DMA buffers, RAM for the baseband CPU, etc. 2700 */ 2701 public long totalMem; 2702 2703 /** 2704 * The threshold of {@link #availMem} at which we consider memory to be 2705 * low and start killing background services and other non-extraneous 2706 * processes. 2707 */ 2708 public long threshold; 2709 2710 /** 2711 * Set to true if the system considers itself to currently be in a low 2712 * memory situation. 2713 */ 2714 public boolean lowMemory; 2715 2716 /** @hide */ 2717 public long hiddenAppThreshold; 2718 /** @hide */ 2719 public long secondaryServerThreshold; 2720 /** @hide */ 2721 public long visibleAppThreshold; 2722 /** @hide */ 2723 public long foregroundAppThreshold; 2724 2725 public MemoryInfo() { 2726 } 2727 2728 public int describeContents() { 2729 return 0; 2730 } 2731 2732 public void writeToParcel(Parcel dest, int flags) { 2733 dest.writeLong(availMem); 2734 dest.writeLong(totalMem); 2735 dest.writeLong(threshold); 2736 dest.writeInt(lowMemory ? 1 : 0); 2737 dest.writeLong(hiddenAppThreshold); 2738 dest.writeLong(secondaryServerThreshold); 2739 dest.writeLong(visibleAppThreshold); 2740 dest.writeLong(foregroundAppThreshold); 2741 } 2742 2743 public void readFromParcel(Parcel source) { 2744 availMem = source.readLong(); 2745 totalMem = source.readLong(); 2746 threshold = source.readLong(); 2747 lowMemory = source.readInt() != 0; 2748 hiddenAppThreshold = source.readLong(); 2749 secondaryServerThreshold = source.readLong(); 2750 visibleAppThreshold = source.readLong(); 2751 foregroundAppThreshold = source.readLong(); 2752 } 2753 2754 public static final Creator<MemoryInfo> CREATOR 2755 = new Creator<MemoryInfo>() { 2756 public MemoryInfo createFromParcel(Parcel source) { 2757 return new MemoryInfo(source); 2758 } 2759 public MemoryInfo[] newArray(int size) { 2760 return new MemoryInfo[size]; 2761 } 2762 }; 2763 2764 private MemoryInfo(Parcel source) { 2765 readFromParcel(source); 2766 } 2767 } 2768 2769 /** 2770 * Return general information about the memory state of the system. This 2771 * can be used to help decide how to manage your own memory, though note 2772 * that polling is not recommended and 2773 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2774 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2775 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2776 * level of your process as needed, which gives a better hint for how to 2777 * manage its memory. 2778 */ 2779 public void getMemoryInfo(MemoryInfo outInfo) { 2780 try { 2781 getService().getMemoryInfo(outInfo); 2782 } catch (RemoteException e) { 2783 throw e.rethrowFromSystemServer(); 2784 } 2785 } 2786 2787 /** 2788 * Information you can retrieve about an ActivityStack in the system. 2789 * @hide 2790 */ 2791 public static class StackInfo implements Parcelable { 2792 public int stackId; 2793 public Rect bounds = new Rect(); 2794 public int[] taskIds; 2795 public String[] taskNames; 2796 public Rect[] taskBounds; 2797 public int[] taskUserIds; 2798 public ComponentName topActivity; 2799 public int displayId; 2800 public int userId; 2801 public boolean visible; 2802 // Index of the stack in the display's stack list, can be used for comparison of stack order 2803 public int position; 2804 2805 @Override 2806 public int describeContents() { 2807 return 0; 2808 } 2809 2810 @Override 2811 public void writeToParcel(Parcel dest, int flags) { 2812 dest.writeInt(stackId); 2813 dest.writeInt(bounds.left); 2814 dest.writeInt(bounds.top); 2815 dest.writeInt(bounds.right); 2816 dest.writeInt(bounds.bottom); 2817 dest.writeIntArray(taskIds); 2818 dest.writeStringArray(taskNames); 2819 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2820 dest.writeInt(boundsCount); 2821 for (int i = 0; i < boundsCount; i++) { 2822 dest.writeInt(taskBounds[i].left); 2823 dest.writeInt(taskBounds[i].top); 2824 dest.writeInt(taskBounds[i].right); 2825 dest.writeInt(taskBounds[i].bottom); 2826 } 2827 dest.writeIntArray(taskUserIds); 2828 dest.writeInt(displayId); 2829 dest.writeInt(userId); 2830 dest.writeInt(visible ? 1 : 0); 2831 dest.writeInt(position); 2832 if (topActivity != null) { 2833 dest.writeInt(1); 2834 topActivity.writeToParcel(dest, 0); 2835 } else { 2836 dest.writeInt(0); 2837 } 2838 } 2839 2840 public void readFromParcel(Parcel source) { 2841 stackId = source.readInt(); 2842 bounds = new Rect( 2843 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2844 taskIds = source.createIntArray(); 2845 taskNames = source.createStringArray(); 2846 final int boundsCount = source.readInt(); 2847 if (boundsCount > 0) { 2848 taskBounds = new Rect[boundsCount]; 2849 for (int i = 0; i < boundsCount; i++) { 2850 taskBounds[i] = new Rect(); 2851 taskBounds[i].set( 2852 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2853 } 2854 } else { 2855 taskBounds = null; 2856 } 2857 taskUserIds = source.createIntArray(); 2858 displayId = source.readInt(); 2859 userId = source.readInt(); 2860 visible = source.readInt() > 0; 2861 position = source.readInt(); 2862 if (source.readInt() > 0) { 2863 topActivity = ComponentName.readFromParcel(source); 2864 } 2865 } 2866 2867 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2868 @Override 2869 public StackInfo createFromParcel(Parcel source) { 2870 return new StackInfo(source); 2871 } 2872 @Override 2873 public StackInfo[] newArray(int size) { 2874 return new StackInfo[size]; 2875 } 2876 }; 2877 2878 public StackInfo() { 2879 } 2880 2881 private StackInfo(Parcel source) { 2882 readFromParcel(source); 2883 } 2884 2885 public String toString(String prefix) { 2886 StringBuilder sb = new StringBuilder(256); 2887 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2888 sb.append(" bounds="); sb.append(bounds.toShortString()); 2889 sb.append(" displayId="); sb.append(displayId); 2890 sb.append(" userId="); sb.append(userId); 2891 sb.append("\n"); 2892 prefix = prefix + " "; 2893 for (int i = 0; i < taskIds.length; ++i) { 2894 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2895 sb.append(": "); sb.append(taskNames[i]); 2896 if (taskBounds != null) { 2897 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2898 } 2899 sb.append(" userId=").append(taskUserIds[i]); 2900 sb.append(" visible=").append(visible); 2901 if (topActivity != null) { 2902 sb.append(" topActivity=").append(topActivity); 2903 } 2904 sb.append("\n"); 2905 } 2906 return sb.toString(); 2907 } 2908 2909 @Override 2910 public String toString() { 2911 return toString(""); 2912 } 2913 } 2914 2915 /** 2916 * @hide 2917 */ 2918 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2919 try { 2920 return getService().clearApplicationUserData(packageName, 2921 observer, UserHandle.myUserId()); 2922 } catch (RemoteException e) { 2923 throw e.rethrowFromSystemServer(); 2924 } 2925 } 2926 2927 /** 2928 * Permits an application to erase its own data from disk. This is equivalent to 2929 * the user choosing to clear the app's data from within the device settings UI. It 2930 * erases all dynamic data associated with the app -- its private data and data in its 2931 * private area on external storage -- but does not remove the installed application 2932 * itself, nor any OBB files. 2933 * 2934 * @return {@code true} if the application successfully requested that the application's 2935 * data be erased; {@code false} otherwise. 2936 */ 2937 public boolean clearApplicationUserData() { 2938 return clearApplicationUserData(mContext.getPackageName(), null); 2939 } 2940 2941 2942 /** 2943 * Permits an application to get the persistent URI permissions granted to another. 2944 * 2945 * <p>Typically called by Settings. 2946 * 2947 * @param packageName application to look for the granted permissions 2948 * @return list of granted URI permissions 2949 * 2950 * @hide 2951 */ 2952 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2953 try { 2954 return getService().getGrantedUriPermissions(packageName, 2955 UserHandle.myUserId()); 2956 } catch (RemoteException e) { 2957 throw e.rethrowFromSystemServer(); 2958 } 2959 } 2960 2961 /** 2962 * Permits an application to clear the persistent URI permissions granted to another. 2963 * 2964 * <p>Typically called by Settings. 2965 * 2966 * @param packageName application to clear its granted permissions 2967 * 2968 * @hide 2969 */ 2970 public void clearGrantedUriPermissions(String packageName) { 2971 try { 2972 getService().clearGrantedUriPermissions(packageName, 2973 UserHandle.myUserId()); 2974 } catch (RemoteException e) { 2975 throw e.rethrowFromSystemServer(); 2976 } 2977 } 2978 2979 /** 2980 * Information you can retrieve about any processes that are in an error condition. 2981 */ 2982 public static class ProcessErrorStateInfo implements Parcelable { 2983 /** 2984 * Condition codes 2985 */ 2986 public static final int NO_ERROR = 0; 2987 public static final int CRASHED = 1; 2988 public static final int NOT_RESPONDING = 2; 2989 2990 /** 2991 * The condition that the process is in. 2992 */ 2993 public int condition; 2994 2995 /** 2996 * The process name in which the crash or error occurred. 2997 */ 2998 public String processName; 2999 3000 /** 3001 * The pid of this process; 0 if none 3002 */ 3003 public int pid; 3004 3005 /** 3006 * The kernel user-ID that has been assigned to this process; 3007 * currently this is not a unique ID (multiple applications can have 3008 * the same uid). 3009 */ 3010 public int uid; 3011 3012 /** 3013 * The activity name associated with the error, if known. May be null. 3014 */ 3015 public String tag; 3016 3017 /** 3018 * A short message describing the error condition. 3019 */ 3020 public String shortMsg; 3021 3022 /** 3023 * A long message describing the error condition. 3024 */ 3025 public String longMsg; 3026 3027 /** 3028 * The stack trace where the error originated. May be null. 3029 */ 3030 public String stackTrace; 3031 3032 /** 3033 * to be deprecated: This value will always be null. 3034 */ 3035 public byte[] crashData = null; 3036 3037 public ProcessErrorStateInfo() { 3038 } 3039 3040 @Override 3041 public int describeContents() { 3042 return 0; 3043 } 3044 3045 @Override 3046 public void writeToParcel(Parcel dest, int flags) { 3047 dest.writeInt(condition); 3048 dest.writeString(processName); 3049 dest.writeInt(pid); 3050 dest.writeInt(uid); 3051 dest.writeString(tag); 3052 dest.writeString(shortMsg); 3053 dest.writeString(longMsg); 3054 dest.writeString(stackTrace); 3055 } 3056 3057 public void readFromParcel(Parcel source) { 3058 condition = source.readInt(); 3059 processName = source.readString(); 3060 pid = source.readInt(); 3061 uid = source.readInt(); 3062 tag = source.readString(); 3063 shortMsg = source.readString(); 3064 longMsg = source.readString(); 3065 stackTrace = source.readString(); 3066 } 3067 3068 public static final Creator<ProcessErrorStateInfo> CREATOR = 3069 new Creator<ProcessErrorStateInfo>() { 3070 public ProcessErrorStateInfo createFromParcel(Parcel source) { 3071 return new ProcessErrorStateInfo(source); 3072 } 3073 public ProcessErrorStateInfo[] newArray(int size) { 3074 return new ProcessErrorStateInfo[size]; 3075 } 3076 }; 3077 3078 private ProcessErrorStateInfo(Parcel source) { 3079 readFromParcel(source); 3080 } 3081 } 3082 3083 /** 3084 * Returns a list of any processes that are currently in an error condition. The result 3085 * will be null if all processes are running properly at this time. 3086 * 3087 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 3088 * current error conditions (it will not return an empty list). This list ordering is not 3089 * specified. 3090 */ 3091 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 3092 try { 3093 return getService().getProcessesInErrorState(); 3094 } catch (RemoteException e) { 3095 throw e.rethrowFromSystemServer(); 3096 } 3097 } 3098 3099 /** 3100 * Information you can retrieve about a running process. 3101 */ 3102 public static class RunningAppProcessInfo implements Parcelable { 3103 /** 3104 * The name of the process that this object is associated with 3105 */ 3106 public String processName; 3107 3108 /** 3109 * The pid of this process; 0 if none 3110 */ 3111 public int pid; 3112 3113 /** 3114 * The user id of this process. 3115 */ 3116 public int uid; 3117 3118 /** 3119 * All packages that have been loaded into the process. 3120 */ 3121 public String pkgList[]; 3122 3123 /** 3124 * Constant for {@link #flags}: this is an app that is unable to 3125 * correctly save its state when going to the background, 3126 * so it can not be killed while in the background. 3127 * @hide 3128 */ 3129 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 3130 3131 /** 3132 * Constant for {@link #flags}: this process is associated with a 3133 * persistent system app. 3134 * @hide 3135 */ 3136 public static final int FLAG_PERSISTENT = 1<<1; 3137 3138 /** 3139 * Constant for {@link #flags}: this process is associated with a 3140 * persistent system app. 3141 * @hide 3142 */ 3143 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 3144 3145 /** 3146 * Flags of information. May be any of 3147 * {@link #FLAG_CANT_SAVE_STATE}. 3148 * @hide 3149 */ 3150 public int flags; 3151 3152 /** 3153 * Last memory trim level reported to the process: corresponds to 3154 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 3155 * ComponentCallbacks2.onTrimMemory(int)}. 3156 */ 3157 public int lastTrimLevel; 3158 3159 /** @hide */ 3160 @IntDef(prefix = { "IMPORTANCE_" }, value = { 3161 IMPORTANCE_FOREGROUND, 3162 IMPORTANCE_FOREGROUND_SERVICE, 3163 IMPORTANCE_TOP_SLEEPING, 3164 IMPORTANCE_VISIBLE, 3165 IMPORTANCE_PERCEPTIBLE, 3166 IMPORTANCE_CANT_SAVE_STATE, 3167 IMPORTANCE_SERVICE, 3168 IMPORTANCE_CACHED, 3169 IMPORTANCE_GONE, 3170 }) 3171 @Retention(RetentionPolicy.SOURCE) 3172 public @interface Importance {} 3173 3174 /** 3175 * Constant for {@link #importance}: This process is running the 3176 * foreground UI; that is, it is the thing currently at the top of the screen 3177 * that the user is interacting with. 3178 */ 3179 public static final int IMPORTANCE_FOREGROUND = 100; 3180 3181 /** 3182 * Constant for {@link #importance}: This process is running a foreground 3183 * service, for example to perform music playback even while the user is 3184 * not immediately in the app. This generally indicates that the process 3185 * is doing something the user actively cares about. 3186 */ 3187 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3188 3189 /** 3190 * Constant for {@link #importance}: This process is running the foreground 3191 * UI, but the device is asleep so it is not visible to the user. This means 3192 * the user is not really aware of the process, because they can not see or 3193 * interact with it, but it is quite important because it what they expect to 3194 * return to once unlocking the device. 3195 */ 3196 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3197 3198 /** 3199 * Constant for {@link #importance}: This process is running something 3200 * that is actively visible to the user, though not in the immediate 3201 * foreground. This may be running a window that is behind the current 3202 * foreground (so paused and with its state saved, not interacting with 3203 * the user, but visible to them to some degree); it may also be running 3204 * other services under the system's control that it inconsiders important. 3205 */ 3206 public static final int IMPORTANCE_VISIBLE = 200; 3207 3208 /** 3209 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 3210 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3211 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 3212 * 3213 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 3214 * on Android versions below {@link Build.VERSION_CODES#O}. 3215 * 3216 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 3217 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3218 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3219 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 3220 */ 3221 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 3222 3223 /** 3224 * Constant for {@link #importance}: This process is not something the user 3225 * is directly aware of, but is otherwise perceptible to them to some degree. 3226 */ 3227 public static final int IMPORTANCE_PERCEPTIBLE = 230; 3228 3229 /** 3230 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 3231 * this wrong value 3232 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3233 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 3234 * 3235 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 3236 * on Android versions below {@link Build.VERSION_CODES#O}. 3237 * 3238 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 3239 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3240 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3241 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 3242 * 3243 * @hide 3244 */ 3245 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 3246 3247 /** 3248 * Constant for {@link #importance}: This process is running an 3249 * application that can not save its state, and thus can't be killed 3250 * while in the background. 3251 * @hide 3252 */ 3253 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 3254 3255 /** 3256 * Constant for {@link #importance}: This process is contains services 3257 * that should remain running. These are background services apps have 3258 * started, not something the user is aware of, so they may be killed by 3259 * the system relatively freely (though it is generally desired that they 3260 * stay running as long as they want to). 3261 */ 3262 public static final int IMPORTANCE_SERVICE = 300; 3263 3264 /** 3265 * Constant for {@link #importance}: This process process contains 3266 * cached code that is expendable, not actively running any app components 3267 * we care about. 3268 */ 3269 public static final int IMPORTANCE_CACHED = 400; 3270 3271 /** 3272 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3273 */ 3274 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3275 3276 /** 3277 * Constant for {@link #importance}: This process is empty of any 3278 * actively running code. 3279 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3280 */ 3281 @Deprecated 3282 public static final int IMPORTANCE_EMPTY = 500; 3283 3284 /** 3285 * Constant for {@link #importance}: This process does not exist. 3286 */ 3287 public static final int IMPORTANCE_GONE = 1000; 3288 3289 /** 3290 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 3291 * will be passed to a client, use {@link #procStateToImportanceForClient}. 3292 * @hide 3293 */ 3294 public static @Importance int procStateToImportance(int procState) { 3295 if (procState == PROCESS_STATE_NONEXISTENT) { 3296 return IMPORTANCE_GONE; 3297 } else if (procState >= PROCESS_STATE_HOME) { 3298 return IMPORTANCE_CACHED; 3299 } else if (procState >= PROCESS_STATE_SERVICE) { 3300 return IMPORTANCE_SERVICE; 3301 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3302 return IMPORTANCE_CANT_SAVE_STATE; 3303 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 3304 return IMPORTANCE_PERCEPTIBLE; 3305 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3306 return IMPORTANCE_VISIBLE; 3307 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3308 return IMPORTANCE_TOP_SLEEPING; 3309 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3310 return IMPORTANCE_FOREGROUND_SERVICE; 3311 } else { 3312 return IMPORTANCE_FOREGROUND; 3313 } 3314 } 3315 3316 /** 3317 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 3318 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 3319 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 3320 * client's target SDK < {@link VERSION_CODES#O}. 3321 * @hide 3322 */ 3323 public static @Importance int procStateToImportanceForClient(int procState, 3324 Context clientContext) { 3325 return procStateToImportanceForTargetSdk(procState, 3326 clientContext.getApplicationInfo().targetSdkVersion); 3327 } 3328 3329 /** 3330 * See {@link #procStateToImportanceForClient}. 3331 * @hide 3332 */ 3333 public static @Importance int procStateToImportanceForTargetSdk(int procState, 3334 int targetSdkVersion) { 3335 final int importance = procStateToImportance(procState); 3336 3337 // For pre O apps, convert to the old, wrong values. 3338 if (targetSdkVersion < VERSION_CODES.O) { 3339 switch (importance) { 3340 case IMPORTANCE_PERCEPTIBLE: 3341 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3342 case IMPORTANCE_CANT_SAVE_STATE: 3343 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3344 } 3345 } 3346 return importance; 3347 } 3348 3349 /** @hide */ 3350 public static int importanceToProcState(@Importance int importance) { 3351 if (importance == IMPORTANCE_GONE) { 3352 return PROCESS_STATE_NONEXISTENT; 3353 } else if (importance >= IMPORTANCE_CACHED) { 3354 return PROCESS_STATE_HOME; 3355 } else if (importance >= IMPORTANCE_SERVICE) { 3356 return PROCESS_STATE_SERVICE; 3357 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3358 return PROCESS_STATE_HEAVY_WEIGHT; 3359 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3360 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3361 } else if (importance >= IMPORTANCE_VISIBLE) { 3362 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3363 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3364 return PROCESS_STATE_TOP_SLEEPING; 3365 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3366 return PROCESS_STATE_FOREGROUND_SERVICE; 3367 } else { 3368 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3369 } 3370 } 3371 3372 /** 3373 * The relative importance level that the system places on this process. 3374 * These constants are numbered so that "more important" values are 3375 * always smaller than "less important" values. 3376 */ 3377 public @Importance int importance; 3378 3379 /** 3380 * An additional ordering within a particular {@link #importance} 3381 * category, providing finer-grained information about the relative 3382 * utility of processes within a category. This number means nothing 3383 * except that a smaller values are more recently used (and thus 3384 * more important). Currently an LRU value is only maintained for 3385 * the {@link #IMPORTANCE_CACHED} category, though others may 3386 * be maintained in the future. 3387 */ 3388 public int lru; 3389 3390 /** 3391 * Constant for {@link #importanceReasonCode}: nothing special has 3392 * been specified for the reason for this level. 3393 */ 3394 public static final int REASON_UNKNOWN = 0; 3395 3396 /** 3397 * Constant for {@link #importanceReasonCode}: one of the application's 3398 * content providers is being used by another process. The pid of 3399 * the client process is in {@link #importanceReasonPid} and the 3400 * target provider in this process is in 3401 * {@link #importanceReasonComponent}. 3402 */ 3403 public static final int REASON_PROVIDER_IN_USE = 1; 3404 3405 /** 3406 * Constant for {@link #importanceReasonCode}: one of the application's 3407 * content providers is being used by another process. The pid of 3408 * the client process is in {@link #importanceReasonPid} and the 3409 * target provider in this process is in 3410 * {@link #importanceReasonComponent}. 3411 */ 3412 public static final int REASON_SERVICE_IN_USE = 2; 3413 3414 /** 3415 * The reason for {@link #importance}, if any. 3416 */ 3417 public int importanceReasonCode; 3418 3419 /** 3420 * For the specified values of {@link #importanceReasonCode}, this 3421 * is the process ID of the other process that is a client of this 3422 * process. This will be 0 if no other process is using this one. 3423 */ 3424 public int importanceReasonPid; 3425 3426 /** 3427 * For the specified values of {@link #importanceReasonCode}, this 3428 * is the name of the component that is being used in this process. 3429 */ 3430 public ComponentName importanceReasonComponent; 3431 3432 /** 3433 * When {@link #importanceReasonPid} is non-0, this is the importance 3434 * of the other pid. @hide 3435 */ 3436 public int importanceReasonImportance; 3437 3438 /** 3439 * Current process state, as per PROCESS_STATE_* constants. 3440 * @hide 3441 */ 3442 public int processState; 3443 3444 public RunningAppProcessInfo() { 3445 importance = IMPORTANCE_FOREGROUND; 3446 importanceReasonCode = REASON_UNKNOWN; 3447 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3448 } 3449 3450 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3451 processName = pProcessName; 3452 pid = pPid; 3453 pkgList = pArr; 3454 } 3455 3456 public int describeContents() { 3457 return 0; 3458 } 3459 3460 public void writeToParcel(Parcel dest, int flags) { 3461 dest.writeString(processName); 3462 dest.writeInt(pid); 3463 dest.writeInt(uid); 3464 dest.writeStringArray(pkgList); 3465 dest.writeInt(this.flags); 3466 dest.writeInt(lastTrimLevel); 3467 dest.writeInt(importance); 3468 dest.writeInt(lru); 3469 dest.writeInt(importanceReasonCode); 3470 dest.writeInt(importanceReasonPid); 3471 ComponentName.writeToParcel(importanceReasonComponent, dest); 3472 dest.writeInt(importanceReasonImportance); 3473 dest.writeInt(processState); 3474 } 3475 3476 public void readFromParcel(Parcel source) { 3477 processName = source.readString(); 3478 pid = source.readInt(); 3479 uid = source.readInt(); 3480 pkgList = source.readStringArray(); 3481 flags = source.readInt(); 3482 lastTrimLevel = source.readInt(); 3483 importance = source.readInt(); 3484 lru = source.readInt(); 3485 importanceReasonCode = source.readInt(); 3486 importanceReasonPid = source.readInt(); 3487 importanceReasonComponent = ComponentName.readFromParcel(source); 3488 importanceReasonImportance = source.readInt(); 3489 processState = source.readInt(); 3490 } 3491 3492 public static final Creator<RunningAppProcessInfo> CREATOR = 3493 new Creator<RunningAppProcessInfo>() { 3494 public RunningAppProcessInfo createFromParcel(Parcel source) { 3495 return new RunningAppProcessInfo(source); 3496 } 3497 public RunningAppProcessInfo[] newArray(int size) { 3498 return new RunningAppProcessInfo[size]; 3499 } 3500 }; 3501 3502 private RunningAppProcessInfo(Parcel source) { 3503 readFromParcel(source); 3504 } 3505 } 3506 3507 /** 3508 * Returns a list of application processes installed on external media 3509 * that are running on the device. 3510 * 3511 * <p><b>Note: this method is only intended for debugging or building 3512 * a user-facing process management UI.</b></p> 3513 * 3514 * @return Returns a list of ApplicationInfo records, or null if none 3515 * This list ordering is not specified. 3516 * @hide 3517 */ 3518 public List<ApplicationInfo> getRunningExternalApplications() { 3519 try { 3520 return getService().getRunningExternalApplications(); 3521 } catch (RemoteException e) { 3522 throw e.rethrowFromSystemServer(); 3523 } 3524 } 3525 3526 /** 3527 * Sets the memory trim mode for a process and schedules a memory trim operation. 3528 * 3529 * <p><b>Note: this method is only intended for testing framework.</b></p> 3530 * 3531 * @return Returns true if successful. 3532 * @hide 3533 */ 3534 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3535 try { 3536 return getService().setProcessMemoryTrimLevel(process, userId, 3537 level); 3538 } catch (RemoteException e) { 3539 throw e.rethrowFromSystemServer(); 3540 } 3541 } 3542 3543 /** 3544 * Returns a list of application processes that are running on the device. 3545 * 3546 * <p><b>Note: this method is only intended for debugging or building 3547 * a user-facing process management UI.</b></p> 3548 * 3549 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3550 * running processes (it will not return an empty list). This list ordering is not 3551 * specified. 3552 */ 3553 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3554 try { 3555 return getService().getRunningAppProcesses(); 3556 } catch (RemoteException e) { 3557 throw e.rethrowFromSystemServer(); 3558 } 3559 } 3560 3561 /** 3562 * Return the importance of a given package name, based on the processes that are 3563 * currently running. The return value is one of the importance constants defined 3564 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3565 * processes that this package has code running inside of. If there are no processes 3566 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3567 * @hide 3568 */ 3569 @SystemApi @TestApi 3570 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3571 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3572 try { 3573 int procState = getService().getPackageProcessState(packageName, 3574 mContext.getOpPackageName()); 3575 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3576 } catch (RemoteException e) { 3577 throw e.rethrowFromSystemServer(); 3578 } 3579 } 3580 3581 /** 3582 * Return the importance of a given uid, based on the processes that are 3583 * currently running. The return value is one of the importance constants defined 3584 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3585 * processes that this uid has running. If there are no processes 3586 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3587 * @hide 3588 */ 3589 @SystemApi @TestApi 3590 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3591 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3592 try { 3593 int procState = getService().getUidProcessState(uid, 3594 mContext.getOpPackageName()); 3595 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3596 } catch (RemoteException e) { 3597 throw e.rethrowFromSystemServer(); 3598 } 3599 } 3600 3601 /** 3602 * Callback to get reports about changes to the importance of a uid. Use with 3603 * {@link #addOnUidImportanceListener}. 3604 * @hide 3605 */ 3606 @SystemApi @TestApi 3607 public interface OnUidImportanceListener { 3608 /** 3609 * The importance if a given uid has changed. Will be one of the importance 3610 * values in {@link RunningAppProcessInfo}; 3611 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3612 * when the uid is no longer running at all. This callback will happen on a thread 3613 * from a thread pool, not the main UI thread. 3614 * @param uid The uid whose importance has changed. 3615 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3616 */ 3617 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3618 } 3619 3620 /** 3621 * Start monitoring changes to the imoportance of uids running in the system. 3622 * @param listener The listener callback that will receive change reports. 3623 * @param importanceCutpoint The level of importance in which the caller is interested 3624 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3625 * is used here, you will receive a call each time a uids importance transitions between 3626 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3627 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3628 * 3629 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3630 * permission to use this feature.</p> 3631 * 3632 * @throws IllegalArgumentException If the listener is already registered. 3633 * @throws SecurityException If the caller does not hold 3634 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3635 * @hide 3636 */ 3637 @SystemApi @TestApi 3638 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3639 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3640 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3641 synchronized (this) { 3642 if (mImportanceListeners.containsKey(listener)) { 3643 throw new IllegalArgumentException("Listener already registered: " + listener); 3644 } 3645 // TODO: implement the cut point in the system process to avoid IPCs. 3646 UidObserver observer = new UidObserver(listener, mContext); 3647 try { 3648 getService().registerUidObserver(observer, 3649 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3650 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3651 mContext.getOpPackageName()); 3652 } catch (RemoteException e) { 3653 throw e.rethrowFromSystemServer(); 3654 } 3655 mImportanceListeners.put(listener, observer); 3656 } 3657 } 3658 3659 /** 3660 * Remove an importance listener that was previously registered with 3661 * {@link #addOnUidImportanceListener}. 3662 * 3663 * @throws IllegalArgumentException If the listener is not registered. 3664 * @hide 3665 */ 3666 @SystemApi @TestApi 3667 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3668 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3669 synchronized (this) { 3670 UidObserver observer = mImportanceListeners.remove(listener); 3671 if (observer == null) { 3672 throw new IllegalArgumentException("Listener not registered: " + listener); 3673 } 3674 try { 3675 getService().unregisterUidObserver(observer); 3676 } catch (RemoteException e) { 3677 throw e.rethrowFromSystemServer(); 3678 } 3679 } 3680 } 3681 3682 /** 3683 * Return global memory state information for the calling process. This 3684 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3685 * only fields that will be filled in are 3686 * {@link RunningAppProcessInfo#pid}, 3687 * {@link RunningAppProcessInfo#uid}, 3688 * {@link RunningAppProcessInfo#lastTrimLevel}, 3689 * {@link RunningAppProcessInfo#importance}, 3690 * {@link RunningAppProcessInfo#lru}, and 3691 * {@link RunningAppProcessInfo#importanceReasonCode}. 3692 */ 3693 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3694 try { 3695 getService().getMyMemoryState(outState); 3696 } catch (RemoteException e) { 3697 throw e.rethrowFromSystemServer(); 3698 } 3699 } 3700 3701 /** 3702 * Return information about the memory usage of one or more processes. 3703 * 3704 * <p><b>Note: this method is only intended for debugging or building 3705 * a user-facing process management UI.</b></p> 3706 * 3707 * @param pids The pids of the processes whose memory usage is to be 3708 * retrieved. 3709 * @return Returns an array of memory information, one for each 3710 * requested pid. 3711 */ 3712 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3713 try { 3714 return getService().getProcessMemoryInfo(pids); 3715 } catch (RemoteException e) { 3716 throw e.rethrowFromSystemServer(); 3717 } 3718 } 3719 3720 /** 3721 * @deprecated This is now just a wrapper for 3722 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3723 * is no longer available to applications because it allows them to 3724 * break other applications by removing their alarms, stopping their 3725 * services, etc. 3726 */ 3727 @Deprecated 3728 public void restartPackage(String packageName) { 3729 killBackgroundProcesses(packageName); 3730 } 3731 3732 /** 3733 * Have the system immediately kill all background processes associated 3734 * with the given package. This is the same as the kernel killing those 3735 * processes to reclaim memory; the system will take care of restarting 3736 * these processes in the future as needed. 3737 * 3738 * @param packageName The name of the package whose processes are to 3739 * be killed. 3740 */ 3741 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3742 public void killBackgroundProcesses(String packageName) { 3743 try { 3744 getService().killBackgroundProcesses(packageName, 3745 UserHandle.myUserId()); 3746 } catch (RemoteException e) { 3747 throw e.rethrowFromSystemServer(); 3748 } 3749 } 3750 3751 /** 3752 * Kills the specified UID. 3753 * @param uid The UID to kill. 3754 * @param reason The reason for the kill. 3755 * 3756 * @hide 3757 */ 3758 @SystemApi 3759 @RequiresPermission(Manifest.permission.KILL_UID) 3760 public void killUid(int uid, String reason) { 3761 try { 3762 getService().killUid(UserHandle.getAppId(uid), 3763 UserHandle.getUserId(uid), reason); 3764 } catch (RemoteException e) { 3765 throw e.rethrowFromSystemServer(); 3766 } 3767 } 3768 3769 /** 3770 * Have the system perform a force stop of everything associated with 3771 * the given application package. All processes that share its uid 3772 * will be killed, all services it has running stopped, all activities 3773 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3774 * broadcast will be sent, so that any of its registered alarms can 3775 * be stopped, notifications removed, etc. 3776 * 3777 * <p>You must hold the permission 3778 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3779 * call this method. 3780 * 3781 * @param packageName The name of the package to be stopped. 3782 * @param userId The user for which the running package is to be stopped. 3783 * 3784 * @hide This is not available to third party applications due to 3785 * it allowing them to break other applications by stopping their 3786 * services, removing their alarms, etc. 3787 */ 3788 public void forceStopPackageAsUser(String packageName, int userId) { 3789 try { 3790 getService().forceStopPackage(packageName, userId); 3791 } catch (RemoteException e) { 3792 throw e.rethrowFromSystemServer(); 3793 } 3794 } 3795 3796 /** 3797 * @see #forceStopPackageAsUser(String, int) 3798 * @hide 3799 */ 3800 @SystemApi 3801 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3802 public void forceStopPackage(String packageName) { 3803 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3804 } 3805 3806 /** 3807 * Get the device configuration attributes. 3808 */ 3809 public ConfigurationInfo getDeviceConfigurationInfo() { 3810 try { 3811 return getService().getDeviceConfigurationInfo(); 3812 } catch (RemoteException e) { 3813 throw e.rethrowFromSystemServer(); 3814 } 3815 } 3816 3817 /** 3818 * Get the preferred density of icons for the launcher. This is used when 3819 * custom drawables are created (e.g., for shortcuts). 3820 * 3821 * @return density in terms of DPI 3822 */ 3823 public int getLauncherLargeIconDensity() { 3824 final Resources res = mContext.getResources(); 3825 final int density = res.getDisplayMetrics().densityDpi; 3826 final int sw = res.getConfiguration().smallestScreenWidthDp; 3827 3828 if (sw < 600) { 3829 // Smaller than approx 7" tablets, use the regular icon size. 3830 return density; 3831 } 3832 3833 switch (density) { 3834 case DisplayMetrics.DENSITY_LOW: 3835 return DisplayMetrics.DENSITY_MEDIUM; 3836 case DisplayMetrics.DENSITY_MEDIUM: 3837 return DisplayMetrics.DENSITY_HIGH; 3838 case DisplayMetrics.DENSITY_TV: 3839 return DisplayMetrics.DENSITY_XHIGH; 3840 case DisplayMetrics.DENSITY_HIGH: 3841 return DisplayMetrics.DENSITY_XHIGH; 3842 case DisplayMetrics.DENSITY_XHIGH: 3843 return DisplayMetrics.DENSITY_XXHIGH; 3844 case DisplayMetrics.DENSITY_XXHIGH: 3845 return DisplayMetrics.DENSITY_XHIGH * 2; 3846 default: 3847 // The density is some abnormal value. Return some other 3848 // abnormal value that is a reasonable scaling of it. 3849 return (int)((density*1.5f)+.5f); 3850 } 3851 } 3852 3853 /** 3854 * Get the preferred launcher icon size. This is used when custom drawables 3855 * are created (e.g., for shortcuts). 3856 * 3857 * @return dimensions of square icons in terms of pixels 3858 */ 3859 public int getLauncherLargeIconSize() { 3860 return getLauncherLargeIconSizeInner(mContext); 3861 } 3862 3863 static int getLauncherLargeIconSizeInner(Context context) { 3864 final Resources res = context.getResources(); 3865 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3866 final int sw = res.getConfiguration().smallestScreenWidthDp; 3867 3868 if (sw < 600) { 3869 // Smaller than approx 7" tablets, use the regular icon size. 3870 return size; 3871 } 3872 3873 final int density = res.getDisplayMetrics().densityDpi; 3874 3875 switch (density) { 3876 case DisplayMetrics.DENSITY_LOW: 3877 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3878 case DisplayMetrics.DENSITY_MEDIUM: 3879 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3880 case DisplayMetrics.DENSITY_TV: 3881 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3882 case DisplayMetrics.DENSITY_HIGH: 3883 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3884 case DisplayMetrics.DENSITY_XHIGH: 3885 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3886 case DisplayMetrics.DENSITY_XXHIGH: 3887 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3888 default: 3889 // The density is some abnormal value. Return some other 3890 // abnormal value that is a reasonable scaling of it. 3891 return (int)((size*1.5f) + .5f); 3892 } 3893 } 3894 3895 /** 3896 * Returns "true" if the user interface is currently being messed with 3897 * by a monkey. 3898 */ 3899 public static boolean isUserAMonkey() { 3900 try { 3901 return getService().isUserAMonkey(); 3902 } catch (RemoteException e) { 3903 throw e.rethrowFromSystemServer(); 3904 } 3905 } 3906 3907 /** 3908 * Returns "true" if device is running in a test harness. 3909 */ 3910 public static boolean isRunningInTestHarness() { 3911 return SystemProperties.getBoolean("ro.test_harness", false); 3912 } 3913 3914 /** 3915 * Returns the launch count of each installed package. 3916 * 3917 * @hide 3918 */ 3919 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3920 try { 3921 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3922 ServiceManager.getService("usagestats")); 3923 if (usageStatsService == null) { 3924 return new HashMap<String, Integer>(); 3925 } 3926 3927 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3928 ActivityThread.currentPackageName()); 3929 if (allPkgUsageStats == null) { 3930 return new HashMap<String, Integer>(); 3931 } 3932 3933 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3934 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3935 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3936 } 3937 3938 return launchCounts; 3939 } catch (RemoteException e) { 3940 Log.w(TAG, "Could not query launch counts", e); 3941 return new HashMap<String, Integer>(); 3942 } 3943 }*/ 3944 3945 /** @hide */ 3946 public static int checkComponentPermission(String permission, int uid, 3947 int owningUid, boolean exported) { 3948 // Root, system server get to do everything. 3949 final int appId = UserHandle.getAppId(uid); 3950 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3951 return PackageManager.PERMISSION_GRANTED; 3952 } 3953 // Isolated processes don't get any permissions. 3954 if (UserHandle.isIsolated(uid)) { 3955 return PackageManager.PERMISSION_DENIED; 3956 } 3957 // If there is a uid that owns whatever is being accessed, it has 3958 // blanket access to it regardless of the permissions it requires. 3959 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3960 return PackageManager.PERMISSION_GRANTED; 3961 } 3962 // If the target is not exported, then nobody else can get to it. 3963 if (!exported) { 3964 /* 3965 RuntimeException here = new RuntimeException("here"); 3966 here.fillInStackTrace(); 3967 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3968 here); 3969 */ 3970 return PackageManager.PERMISSION_DENIED; 3971 } 3972 if (permission == null) { 3973 return PackageManager.PERMISSION_GRANTED; 3974 } 3975 try { 3976 return AppGlobals.getPackageManager() 3977 .checkUidPermission(permission, uid); 3978 } catch (RemoteException e) { 3979 throw e.rethrowFromSystemServer(); 3980 } 3981 } 3982 3983 /** @hide */ 3984 public static int checkUidPermission(String permission, int uid) { 3985 try { 3986 return AppGlobals.getPackageManager() 3987 .checkUidPermission(permission, uid); 3988 } catch (RemoteException e) { 3989 throw e.rethrowFromSystemServer(); 3990 } 3991 } 3992 3993 /** 3994 * @hide 3995 * Helper for dealing with incoming user arguments to system service calls. 3996 * Takes care of checking permissions and converting USER_CURRENT to the 3997 * actual current user. 3998 * 3999 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 4000 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 4001 * @param userId The user id argument supplied by the caller -- this is the user 4002 * they want to run as. 4003 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 4004 * to get a USER_ALL returned and deal with it correctly. If false, 4005 * an exception will be thrown if USER_ALL is supplied. 4006 * @param requireFull If true, the caller must hold 4007 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 4008 * different user than their current process; otherwise they must hold 4009 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 4010 * @param name Optional textual name of the incoming call; only for generating error messages. 4011 * @param callerPackage Optional package name of caller; only for error messages. 4012 * 4013 * @return Returns the user ID that the call should run as. Will always be a concrete 4014 * user number, unless <var>allowAll</var> is true in which case it could also be 4015 * USER_ALL. 4016 */ 4017 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 4018 boolean allowAll, boolean requireFull, String name, String callerPackage) { 4019 if (UserHandle.getUserId(callingUid) == userId) { 4020 return userId; 4021 } 4022 try { 4023 return getService().handleIncomingUser(callingPid, 4024 callingUid, userId, allowAll, requireFull, name, callerPackage); 4025 } catch (RemoteException e) { 4026 throw e.rethrowFromSystemServer(); 4027 } 4028 } 4029 4030 /** 4031 * Gets the userId of the current foreground user. Requires system permissions. 4032 * @hide 4033 */ 4034 @SystemApi 4035 @RequiresPermission(anyOf = { 4036 "android.permission.INTERACT_ACROSS_USERS", 4037 "android.permission.INTERACT_ACROSS_USERS_FULL" 4038 }) 4039 public static int getCurrentUser() { 4040 UserInfo ui; 4041 try { 4042 ui = getService().getCurrentUser(); 4043 return ui != null ? ui.id : 0; 4044 } catch (RemoteException e) { 4045 throw e.rethrowFromSystemServer(); 4046 } 4047 } 4048 4049 /** 4050 * @param userid the user's id. Zero indicates the default user. 4051 * @hide 4052 */ 4053 public boolean switchUser(int userid) { 4054 try { 4055 return getService().switchUser(userid); 4056 } catch (RemoteException e) { 4057 throw e.rethrowFromSystemServer(); 4058 } 4059 } 4060 4061 /** 4062 * Logs out current current foreground user by switching to the system user and stopping the 4063 * user being switched from. 4064 * @hide 4065 */ 4066 public static void logoutCurrentUser() { 4067 int currentUser = ActivityManager.getCurrentUser(); 4068 if (currentUser != UserHandle.USER_SYSTEM) { 4069 try { 4070 getService().switchUser(UserHandle.USER_SYSTEM); 4071 getService().stopUser(currentUser, /* force= */ false, null); 4072 } catch (RemoteException e) { 4073 e.rethrowFromSystemServer(); 4074 } 4075 } 4076 } 4077 4078 /** {@hide} */ 4079 public static final int FLAG_OR_STOPPED = 1 << 0; 4080 /** {@hide} */ 4081 public static final int FLAG_AND_LOCKED = 1 << 1; 4082 /** {@hide} */ 4083 public static final int FLAG_AND_UNLOCKED = 1 << 2; 4084 /** {@hide} */ 4085 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 4086 4087 /** 4088 * Return whether the given user is actively running. This means that 4089 * the user is in the "started" state, not "stopped" -- it is currently 4090 * allowed to run code through scheduled alarms, receiving broadcasts, 4091 * etc. A started user may be either the current foreground user or a 4092 * background user; the result here does not distinguish between the two. 4093 * @param userId the user's id. Zero indicates the default user. 4094 * @hide 4095 */ 4096 public boolean isUserRunning(int userId) { 4097 try { 4098 return getService().isUserRunning(userId, 0); 4099 } catch (RemoteException e) { 4100 throw e.rethrowFromSystemServer(); 4101 } 4102 } 4103 4104 /** {@hide} */ 4105 public boolean isVrModePackageEnabled(ComponentName component) { 4106 try { 4107 return getService().isVrModePackageEnabled(component); 4108 } catch (RemoteException e) { 4109 throw e.rethrowFromSystemServer(); 4110 } 4111 } 4112 4113 /** 4114 * Perform a system dump of various state associated with the given application 4115 * package name. This call blocks while the dump is being performed, so should 4116 * not be done on a UI thread. The data will be written to the given file 4117 * descriptor as text. 4118 * @param fd The file descriptor that the dump should be written to. The file 4119 * descriptor is <em>not</em> closed by this function; the caller continues to 4120 * own it. 4121 * @param packageName The name of the package that is to be dumped. 4122 */ 4123 @RequiresPermission(Manifest.permission.DUMP) 4124 public void dumpPackageState(FileDescriptor fd, String packageName) { 4125 dumpPackageStateStatic(fd, packageName); 4126 } 4127 4128 /** 4129 * @hide 4130 */ 4131 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 4132 FileOutputStream fout = new FileOutputStream(fd); 4133 PrintWriter pw = new FastPrintWriter(fout); 4134 dumpService(pw, fd, "package", new String[] { packageName }); 4135 pw.println(); 4136 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 4137 "-a", "package", packageName }); 4138 pw.println(); 4139 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 4140 pw.println(); 4141 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 4142 pw.println(); 4143 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 4144 pw.println(); 4145 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 4146 pw.flush(); 4147 } 4148 4149 /** 4150 * @hide 4151 */ 4152 public static boolean isSystemReady() { 4153 if (!sSystemReady) { 4154 if (ActivityThread.isSystem()) { 4155 sSystemReady = 4156 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 4157 } else { 4158 // Since this is being called from outside system server, system should be 4159 // ready by now. 4160 sSystemReady = true; 4161 } 4162 } 4163 return sSystemReady; 4164 } 4165 4166 /** 4167 * @hide 4168 */ 4169 public static void broadcastStickyIntent(Intent intent, int userId) { 4170 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 4171 } 4172 4173 /** 4174 * Convenience for sending a sticky broadcast. For internal use only. 4175 * 4176 * @hide 4177 */ 4178 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 4179 try { 4180 getService().broadcastIntent( 4181 null, intent, null, null, Activity.RESULT_OK, null, null, 4182 null /*permission*/, appOp, null, false, true, userId); 4183 } catch (RemoteException ex) { 4184 } 4185 } 4186 4187 /** 4188 * @hide 4189 */ 4190 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 4191 String tag) { 4192 try { 4193 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 4194 sourceUid, sourcePkg, tag); 4195 } catch (RemoteException ex) { 4196 } 4197 } 4198 4199 /** 4200 * @hide 4201 */ 4202 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 4203 try { 4204 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4205 } catch (RemoteException ex) { 4206 } 4207 } 4208 4209 /** 4210 * @hide 4211 */ 4212 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 4213 try { 4214 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4215 } catch (RemoteException ex) { 4216 } 4217 } 4218 4219 /** 4220 * @hide 4221 */ 4222 public static IActivityManager getService() { 4223 return IActivityManagerSingleton.get(); 4224 } 4225 4226 private static final Singleton<IActivityManager> IActivityManagerSingleton = 4227 new Singleton<IActivityManager>() { 4228 @Override 4229 protected IActivityManager create() { 4230 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 4231 final IActivityManager am = IActivityManager.Stub.asInterface(b); 4232 return am; 4233 } 4234 }; 4235 4236 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 4237 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 4238 IBinder service = ServiceManager.checkService(name); 4239 if (service == null) { 4240 pw.println(" (Service not found)"); 4241 return; 4242 } 4243 TransferPipe tp = null; 4244 try { 4245 pw.flush(); 4246 tp = new TransferPipe(); 4247 tp.setBufferPrefix(" "); 4248 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 4249 tp.go(fd, 10000); 4250 } catch (Throwable e) { 4251 if (tp != null) { 4252 tp.kill(); 4253 } 4254 pw.println("Failure dumping service:"); 4255 e.printStackTrace(pw); 4256 } 4257 } 4258 4259 /** 4260 * Request that the system start watching for the calling process to exceed a pss 4261 * size as given here. Once called, the system will look for any occasions where it 4262 * sees the associated process with a larger pss size and, when this happens, automatically 4263 * pull a heap dump from it and allow the user to share the data. Note that this request 4264 * continues running even if the process is killed and restarted. To remove the watch, 4265 * use {@link #clearWatchHeapLimit()}. 4266 * 4267 * <p>This API only work if the calling process has been marked as 4268 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4269 * (userdebug or eng) build.</p> 4270 * 4271 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4272 * handle heap limit reports themselves.</p> 4273 * 4274 * @param pssSize The size in bytes to set the limit at. 4275 */ 4276 public void setWatchHeapLimit(long pssSize) { 4277 try { 4278 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4279 mContext.getPackageName()); 4280 } catch (RemoteException e) { 4281 throw e.rethrowFromSystemServer(); 4282 } 4283 } 4284 4285 /** 4286 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4287 * If your package has an activity handling this action, it will be launched with the 4288 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4289 * match the activty must support this action and a MIME type of "*/*". 4290 */ 4291 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4292 4293 /** 4294 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4295 */ 4296 public void clearWatchHeapLimit() { 4297 try { 4298 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4299 } catch (RemoteException e) { 4300 throw e.rethrowFromSystemServer(); 4301 } 4302 } 4303 4304 /** 4305 * @hide 4306 */ 4307 public void startLockTaskMode(int taskId) { 4308 try { 4309 getService().startLockTaskModeById(taskId); 4310 } catch (RemoteException e) { 4311 throw e.rethrowFromSystemServer(); 4312 } 4313 } 4314 4315 /** 4316 * @hide 4317 */ 4318 public void stopLockTaskMode() { 4319 try { 4320 getService().stopLockTaskMode(); 4321 } catch (RemoteException e) { 4322 throw e.rethrowFromSystemServer(); 4323 } 4324 } 4325 4326 /** 4327 * Return whether currently in lock task mode. When in this mode 4328 * no new tasks can be created or switched to. 4329 * 4330 * @see Activity#startLockTask() 4331 * 4332 * @deprecated Use {@link #getLockTaskModeState} instead. 4333 */ 4334 @Deprecated 4335 public boolean isInLockTaskMode() { 4336 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4337 } 4338 4339 /** 4340 * Return the current state of task locking. The three possible outcomes 4341 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4342 * and {@link #LOCK_TASK_MODE_PINNED}. 4343 * 4344 * @see Activity#startLockTask() 4345 */ 4346 public int getLockTaskModeState() { 4347 try { 4348 return getService().getLockTaskModeState(); 4349 } catch (RemoteException e) { 4350 throw e.rethrowFromSystemServer(); 4351 } 4352 } 4353 4354 /** 4355 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4356 * thread can be a VR thread in a process at a time, and that thread may be subject to 4357 * restrictions on the amount of time it can run. 4358 * 4359 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4360 * method will return to normal operation, and calling this method will do nothing while 4361 * persistent VR mode is enabled. 4362 * 4363 * To reset the VR thread for an application, a tid of 0 can be passed. 4364 * 4365 * @see android.os.Process#myTid() 4366 * @param tid tid of the VR thread 4367 */ 4368 public static void setVrThread(int tid) { 4369 try { 4370 getService().setVrThread(tid); 4371 } catch (RemoteException e) { 4372 // pass 4373 } 4374 } 4375 4376 /** 4377 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4378 * beyond a single process. Only one thread can be a 4379 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4380 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4381 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4382 * persistent VR thread loses its new scheduling priority; this method must be called again to 4383 * set the persistent thread. 4384 * 4385 * To reset the persistent VR thread, a tid of 0 can be passed. 4386 * 4387 * @see android.os.Process#myTid() 4388 * @param tid tid of the VR thread 4389 * @hide 4390 */ 4391 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4392 public static void setPersistentVrThread(int tid) { 4393 try { 4394 getService().setPersistentVrThread(tid); 4395 } catch (RemoteException e) { 4396 // pass 4397 } 4398 } 4399 4400 /** 4401 * The AppTask allows you to manage your own application's tasks. 4402 * See {@link android.app.ActivityManager#getAppTasks()} 4403 */ 4404 public static class AppTask { 4405 private IAppTask mAppTaskImpl; 4406 4407 /** @hide */ 4408 public AppTask(IAppTask task) { 4409 mAppTaskImpl = task; 4410 } 4411 4412 /** 4413 * Finishes all activities in this task and removes it from the recent tasks list. 4414 */ 4415 public void finishAndRemoveTask() { 4416 try { 4417 mAppTaskImpl.finishAndRemoveTask(); 4418 } catch (RemoteException e) { 4419 throw e.rethrowFromSystemServer(); 4420 } 4421 } 4422 4423 /** 4424 * Get the RecentTaskInfo associated with this task. 4425 * 4426 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4427 */ 4428 public RecentTaskInfo getTaskInfo() { 4429 try { 4430 return mAppTaskImpl.getTaskInfo(); 4431 } catch (RemoteException e) { 4432 throw e.rethrowFromSystemServer(); 4433 } 4434 } 4435 4436 /** 4437 * Bring this task to the foreground. If it contains activities, they will be 4438 * brought to the foreground with it and their instances re-created if needed. 4439 * If it doesn't contain activities, the root activity of the task will be 4440 * re-launched. 4441 */ 4442 public void moveToFront() { 4443 try { 4444 mAppTaskImpl.moveToFront(); 4445 } catch (RemoteException e) { 4446 throw e.rethrowFromSystemServer(); 4447 } 4448 } 4449 4450 /** 4451 * Start an activity in this task. Brings the task to the foreground. If this task 4452 * is not currently active (that is, its id < 0), then a new activity for the given 4453 * Intent will be launched as the root of the task and the task brought to the 4454 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4455 * an activity to launch in a new task, then a new activity for the given Intent will 4456 * be launched on top of the task and the task brought to the foreground. If this 4457 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4458 * or would otherwise be launched in to a new task, then the activity not launched but 4459 * this task be brought to the foreground and a new intent delivered to the top 4460 * activity if appropriate. 4461 * 4462 * <p>In other words, you generally want to use an Intent here that does not specify 4463 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4464 * and let the system do the right thing.</p> 4465 * 4466 * @param intent The Intent describing the new activity to be launched on the task. 4467 * @param options Optional launch options. 4468 * 4469 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4470 */ 4471 public void startActivity(Context context, Intent intent, Bundle options) { 4472 ActivityThread thread = ActivityThread.currentActivityThread(); 4473 thread.getInstrumentation().execStartActivityFromAppTask(context, 4474 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4475 } 4476 4477 /** 4478 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4479 * Intent of this AppTask. 4480 * 4481 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4482 * be set; otherwise, it will be cleared. 4483 */ 4484 public void setExcludeFromRecents(boolean exclude) { 4485 try { 4486 mAppTaskImpl.setExcludeFromRecents(exclude); 4487 } catch (RemoteException e) { 4488 throw e.rethrowFromSystemServer(); 4489 } 4490 } 4491 } 4492} 4493