ActivityManager.java revision 3ebf17dcb4fc8a5846822640d39d0cf8d954f1d7
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.TestApi; 26import android.content.pm.ActivityInfo; 27import android.content.res.Configuration; 28import android.graphics.Canvas; 29import android.graphics.GraphicBuffer; 30import android.graphics.Matrix; 31import android.graphics.Point; 32import android.os.BatteryStats; 33import android.os.Build; 34import android.os.Build.VERSION_CODES; 35import android.os.IBinder; 36import android.os.ParcelFileDescriptor; 37 38import com.android.internal.app.procstats.ProcessStats; 39import com.android.internal.os.RoSystemProperties; 40import com.android.internal.os.TransferPipe; 41import com.android.internal.util.FastPrintWriter; 42import com.android.server.LocalServices; 43 44import android.content.ComponentName; 45import android.content.Context; 46import android.content.Intent; 47import android.content.UriPermission; 48import android.content.pm.ApplicationInfo; 49import android.content.pm.ConfigurationInfo; 50import android.content.pm.IPackageDataObserver; 51import android.content.pm.PackageManager; 52import android.content.pm.ParceledListSlice; 53import android.content.pm.UserInfo; 54import android.content.res.Resources; 55import android.graphics.Bitmap; 56import android.graphics.Color; 57import android.graphics.Rect; 58import android.os.Bundle; 59import android.os.Debug; 60import android.os.Handler; 61import android.os.Parcel; 62import android.os.Parcelable; 63import android.os.Process; 64import android.os.RemoteException; 65import android.os.ServiceManager; 66import android.os.SystemProperties; 67import android.os.UserHandle; 68import android.text.TextUtils; 69import android.util.ArrayMap; 70import android.util.DisplayMetrics; 71import android.util.Singleton; 72import android.util.Size; 73 74import org.xmlpull.v1.XmlSerializer; 75 76import java.io.FileDescriptor; 77import java.io.FileOutputStream; 78import java.io.IOException; 79import java.io.PrintWriter; 80import java.lang.annotation.Retention; 81import java.lang.annotation.RetentionPolicy; 82import java.util.ArrayList; 83import java.util.List; 84 85/** 86 * <p> 87 * This class gives information about, and interacts 88 * with, activities, services, and the containing 89 * process. 90 * </p> 91 * 92 * <p> 93 * A number of the methods in this class are for 94 * debugging or informational purposes and they should 95 * not be used to affect any runtime behavior of 96 * your app. These methods are called out as such in 97 * the method level documentation. 98 * </p> 99 * 100 *<p> 101 * Most application developers should not have the need to 102 * use this class, most of whose methods are for specialized 103 * use cases. However, a few methods are more broadly applicable. 104 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 105 * enables your app to detect whether it is running on a low-memory device, 106 * and behave accordingly. 107 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 108 * is for apps with reset-data functionality. 109 * </p> 110 * 111 * <p> 112 * In some special use cases, where an app interacts with 113 * its Task stack, the app may use the 114 * {@link android.app.ActivityManager.AppTask} and 115 * {@link android.app.ActivityManager.RecentTaskInfo} inner 116 * classes. However, in general, the methods in this class should 117 * be used for testing and debugging purposes only. 118 * </p> 119 */ 120public class ActivityManager { 121 private static String TAG = "ActivityManager"; 122 123 private static int gMaxRecentTasks = -1; 124 125 private final Context mContext; 126 127 private static volatile boolean sSystemReady = false; 128 129 130 private static final int FIRST_START_FATAL_ERROR_CODE = -100; 131 private static final int LAST_START_FATAL_ERROR_CODE = -1; 132 private static final int FIRST_START_SUCCESS_CODE = 0; 133 private static final int LAST_START_SUCCESS_CODE = 99; 134 private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; 135 private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; 136 137 /** 138 * System property to enable task snapshots. 139 * @hide 140 */ 141 public final static boolean ENABLE_TASK_SNAPSHOTS; 142 143 static { 144 ENABLE_TASK_SNAPSHOTS = SystemProperties.getBoolean("persist.enable_task_snapshots", true); 145 } 146 147 static final class UidObserver extends IUidObserver.Stub { 148 final OnUidImportanceListener mListener; 149 final Context mContext; 150 151 UidObserver(OnUidImportanceListener listener, Context clientContext) { 152 mListener = listener; 153 mContext = clientContext; 154 } 155 156 @Override 157 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 158 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 159 procState, mContext)); 160 } 161 162 @Override 163 public void onUidGone(int uid, boolean disabled) { 164 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 165 } 166 167 @Override 168 public void onUidActive(int uid) { 169 } 170 171 @Override 172 public void onUidIdle(int uid, boolean disabled) { 173 } 174 } 175 176 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 177 178 /** 179 * Defines acceptable types of bugreports. 180 * @hide 181 */ 182 @Retention(RetentionPolicy.SOURCE) 183 @IntDef({ 184 BUGREPORT_OPTION_FULL, 185 BUGREPORT_OPTION_INTERACTIVE, 186 BUGREPORT_OPTION_REMOTE, 187 BUGREPORT_OPTION_WEAR, 188 BUGREPORT_OPTION_TELEPHONY 189 }) 190 public @interface BugreportMode {} 191 /** 192 * Takes a bugreport without user interference (and hence causing less 193 * interference to the system), but includes all sections. 194 * @hide 195 */ 196 public static final int BUGREPORT_OPTION_FULL = 0; 197 /** 198 * Allows user to monitor progress and enter additional data; might not include all 199 * sections. 200 * @hide 201 */ 202 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 203 /** 204 * Takes a bugreport requested remotely by administrator of the Device Owner app, 205 * not the device's user. 206 * @hide 207 */ 208 public static final int BUGREPORT_OPTION_REMOTE = 2; 209 /** 210 * Takes a bugreport on a wearable device. 211 * @hide 212 */ 213 public static final int BUGREPORT_OPTION_WEAR = 3; 214 215 /** 216 * Takes a lightweight version of bugreport that only includes a few, urgent sections 217 * used to report telephony bugs. 218 * @hide 219 */ 220 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 221 222 /** 223 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 224 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 225 * uninstalled in lieu of the declaring one. The package named here must be 226 * signed with the same certificate as the one declaring the {@code <meta-data>}. 227 */ 228 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 229 230 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 231 // result is properly categorized. 232 233 /** 234 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 235 * @hide 236 */ 237 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 238 239 /** 240 * Result for IActivityManager.startVoiceActivity: active session does not match 241 * the requesting token. 242 * @hide 243 */ 244 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 245 246 /** 247 * Result for IActivityManager.startActivity: trying to start a background user 248 * activity that shouldn't be displayed for all users. 249 * @hide 250 */ 251 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 252 253 /** 254 * Result for IActivityManager.startActivity: trying to start an activity under voice 255 * control when that activity does not support the VOICE category. 256 * @hide 257 */ 258 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 259 260 /** 261 * Result for IActivityManager.startActivity: an error where the 262 * start had to be canceled. 263 * @hide 264 */ 265 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 266 267 /** 268 * Result for IActivityManager.startActivity: an error where the 269 * thing being started is not an activity. 270 * @hide 271 */ 272 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 273 274 /** 275 * Result for IActivityManager.startActivity: an error where the 276 * caller does not have permission to start the activity. 277 * @hide 278 */ 279 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 280 281 /** 282 * Result for IActivityManager.startActivity: an error where the 283 * caller has requested both to forward a result and to receive 284 * a result. 285 * @hide 286 */ 287 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 288 289 /** 290 * Result for IActivityManager.startActivity: an error where the 291 * requested class is not found. 292 * @hide 293 */ 294 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 295 296 /** 297 * Result for IActivityManager.startActivity: an error where the 298 * given Intent could not be resolved to an activity. 299 * @hide 300 */ 301 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 302 303 /** 304 * Result for IActivityManaqer.startActivity: the activity was started 305 * successfully as normal. 306 * @hide 307 */ 308 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 309 310 /** 311 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 312 * be executed if it is the recipient, and that is indeed the case. 313 * @hide 314 */ 315 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 316 317 /** 318 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 319 * a task was simply brought to the foreground. 320 * @hide 321 */ 322 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 323 324 /** 325 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 326 * the given Intent was given to the existing top activity. 327 * @hide 328 */ 329 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 330 331 /** 332 * Result for IActivityManaqer.startActivity: request was canceled because 333 * app switches are temporarily canceled to ensure the user's last request 334 * (such as pressing home) is performed. 335 * @hide 336 */ 337 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 338 339 /** 340 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 341 * while in Lock Task Mode. 342 * @hide 343 */ 344 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 345 FIRST_START_NON_FATAL_ERROR_CODE + 1; 346 347 /** 348 * Flag for IActivityManaqer.startActivity: do special start mode where 349 * a new activity is launched only if it is needed. 350 * @hide 351 */ 352 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 353 354 /** 355 * Flag for IActivityManaqer.startActivity: launch the app for 356 * debugging. 357 * @hide 358 */ 359 public static final int START_FLAG_DEBUG = 1<<1; 360 361 /** 362 * Flag for IActivityManaqer.startActivity: launch the app for 363 * allocation tracking. 364 * @hide 365 */ 366 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 367 368 /** 369 * Flag for IActivityManaqer.startActivity: launch the app with 370 * native debugging support. 371 * @hide 372 */ 373 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 374 375 /** 376 * Result for IActivityManaqer.broadcastIntent: success! 377 * @hide 378 */ 379 public static final int BROADCAST_SUCCESS = 0; 380 381 /** 382 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 383 * a sticky intent without appropriate permission. 384 * @hide 385 */ 386 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 387 388 /** 389 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 390 * to a stopped user. Fail. 391 * @hide 392 */ 393 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 394 395 /** 396 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 397 * for a sendBroadcast operation. 398 * @hide 399 */ 400 public static final int INTENT_SENDER_BROADCAST = 1; 401 402 /** 403 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 404 * for a startActivity operation. 405 * @hide 406 */ 407 public static final int INTENT_SENDER_ACTIVITY = 2; 408 409 /** 410 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 411 * for an activity result operation. 412 * @hide 413 */ 414 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 415 416 /** 417 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 418 * for a startService operation. 419 * @hide 420 */ 421 public static final int INTENT_SENDER_SERVICE = 4; 422 423 /** 424 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 425 * for a startForegroundService operation. 426 * @hide 427 */ 428 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 429 430 /** @hide User operation call: success! */ 431 public static final int USER_OP_SUCCESS = 0; 432 433 /** @hide User operation call: given user id is not known. */ 434 public static final int USER_OP_UNKNOWN_USER = -1; 435 436 /** @hide User operation call: given user id is the current user, can't be stopped. */ 437 public static final int USER_OP_IS_CURRENT = -2; 438 439 /** @hide User operation call: system user can't be stopped. */ 440 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 441 442 /** @hide User operation call: one of related users cannot be stopped. */ 443 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 444 445 /** @hide Not a real process state. */ 446 public static final int PROCESS_STATE_UNKNOWN = -1; 447 448 /** @hide Process is a persistent system process. */ 449 public static final int PROCESS_STATE_PERSISTENT = 0; 450 451 /** @hide Process is a persistent system process and is doing UI. */ 452 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 453 454 /** @hide Process is hosting the current top activities. Note that this covers 455 * all activities that are visible to the user. */ 456 public static final int PROCESS_STATE_TOP = 2; 457 458 /** @hide Process is hosting a foreground service due to a system binding. */ 459 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 460 461 /** @hide Process is hosting a foreground service. */ 462 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 463 464 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 465 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 466 467 /** @hide Process is important to the user, and something they are aware of. */ 468 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 469 470 /** @hide Process is important to the user, but not something they are aware of. */ 471 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 472 473 /** @hide Process is in the background transient so we will try to keep running. */ 474 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 475 476 /** @hide Process is in the background running a backup/restore operation. */ 477 public static final int PROCESS_STATE_BACKUP = 9; 478 479 /** @hide Process is in the background, but it can't restore its state so we want 480 * to try to avoid killing it. */ 481 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 482 483 /** @hide Process is in the background running a service. Unlike oom_adj, this level 484 * is used for both the normal running in background state and the executing 485 * operations state. */ 486 public static final int PROCESS_STATE_SERVICE = 11; 487 488 /** @hide Process is in the background running a receiver. Note that from the 489 * perspective of oom_adj receivers run at a higher foreground level, but for our 490 * prioritization here that is not necessary and putting them below services means 491 * many fewer changes in some process states as they receive broadcasts. */ 492 public static final int PROCESS_STATE_RECEIVER = 12; 493 494 /** @hide Process is in the background but hosts the home activity. */ 495 public static final int PROCESS_STATE_HOME = 13; 496 497 /** @hide Process is in the background but hosts the last shown activity. */ 498 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 499 500 /** @hide Process is being cached for later use and contains activities. */ 501 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 502 503 /** @hide Process is being cached for later use and is a client of another cached 504 * process that contains activities. */ 505 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 506 507 /** @hide Process is being cached for later use and is empty. */ 508 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 509 510 /** @hide Process does not exist. */ 511 public static final int PROCESS_STATE_NONEXISTENT = 18; 512 513 /** @hide The lowest process state number */ 514 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 515 516 /** @hide The highest process state number */ 517 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 518 519 /** @hide Should this process state be considered a background state? */ 520 public static final boolean isProcStateBackground(int procState) { 521 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 522 } 523 524 /** @hide requestType for assist context: only basic information. */ 525 public static final int ASSIST_CONTEXT_BASIC = 0; 526 527 /** @hide requestType for assist context: generate full AssistStructure. */ 528 public static final int ASSIST_CONTEXT_FULL = 1; 529 530 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 531 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 532 533 /** @hide Flag for registerUidObserver: report changes in process state. */ 534 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 535 536 /** @hide Flag for registerUidObserver: report uid gone. */ 537 public static final int UID_OBSERVER_GONE = 1<<1; 538 539 /** @hide Flag for registerUidObserver: report uid has become idle. */ 540 public static final int UID_OBSERVER_IDLE = 1<<2; 541 542 /** @hide Flag for registerUidObserver: report uid has become active. */ 543 public static final int UID_OBSERVER_ACTIVE = 1<<3; 544 545 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 546 public static final int APP_START_MODE_NORMAL = 0; 547 548 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 549 public static final int APP_START_MODE_DELAYED = 1; 550 551 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 552 * rigid errors (throwing exception). */ 553 public static final int APP_START_MODE_DELAYED_RIGID = 2; 554 555 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 556 * launches; this is the mode for ephemeral apps. */ 557 public static final int APP_START_MODE_DISABLED = 3; 558 559 /** 560 * Lock task mode is not active. 561 */ 562 public static final int LOCK_TASK_MODE_NONE = 0; 563 564 /** 565 * Full lock task mode is active. 566 */ 567 public static final int LOCK_TASK_MODE_LOCKED = 1; 568 569 /** 570 * App pinning mode is active. 571 */ 572 public static final int LOCK_TASK_MODE_PINNED = 2; 573 574 Point mAppTaskThumbnailSize; 575 576 /*package*/ ActivityManager(Context context, Handler handler) { 577 mContext = context; 578 } 579 580 /** 581 * Returns whether the launch was successful. 582 * @hide 583 */ 584 public static final boolean isStartResultSuccessful(int result) { 585 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 586 } 587 588 /** 589 * Returns whether the launch result was a fatal error. 590 * @hide 591 */ 592 public static final boolean isStartResultFatalError(int result) { 593 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 594 } 595 596 /** 597 * Screen compatibility mode: the application most always run in 598 * compatibility mode. 599 * @hide 600 */ 601 public static final int COMPAT_MODE_ALWAYS = -1; 602 603 /** 604 * Screen compatibility mode: the application can never run in 605 * compatibility mode. 606 * @hide 607 */ 608 public static final int COMPAT_MODE_NEVER = -2; 609 610 /** 611 * Screen compatibility mode: unknown. 612 * @hide 613 */ 614 public static final int COMPAT_MODE_UNKNOWN = -3; 615 616 /** 617 * Screen compatibility mode: the application currently has compatibility 618 * mode disabled. 619 * @hide 620 */ 621 public static final int COMPAT_MODE_DISABLED = 0; 622 623 /** 624 * Screen compatibility mode: the application currently has compatibility 625 * mode enabled. 626 * @hide 627 */ 628 public static final int COMPAT_MODE_ENABLED = 1; 629 630 /** 631 * Screen compatibility mode: request to toggle the application's 632 * compatibility mode. 633 * @hide 634 */ 635 public static final int COMPAT_MODE_TOGGLE = 2; 636 637 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 638 SystemProperties.getBoolean("debug.force_low_ram", false); 639 640 /** @hide */ 641 public static class StackId { 642 /** Invalid stack ID. */ 643 public static final int INVALID_STACK_ID = -1; 644 645 /** First static stack ID. */ 646 public static final int FIRST_STATIC_STACK_ID = 0; 647 648 /** Home activity stack ID. */ 649 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 650 651 /** ID of stack where fullscreen activities are normally launched into. */ 652 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 653 654 /** ID of stack where freeform/resized activities are normally launched into. */ 655 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 656 657 /** ID of stack that occupies a dedicated region of the screen. */ 658 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 659 660 /** ID of stack that always on top (always visible) when it exist. */ 661 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 662 663 /** ID of stack that contains the Recents activity. */ 664 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 665 666 /** ID of stack that contains activities launched by the assistant. */ 667 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 668 669 /** Last static stack stack ID. */ 670 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 671 672 /** Start of ID range used by stacks that are created dynamically. */ 673 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 674 675 public static boolean isStaticStack(int stackId) { 676 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 677 } 678 679 public static boolean isDynamicStack(int stackId) { 680 return stackId >= FIRST_DYNAMIC_STACK_ID; 681 } 682 683 /** 684 * Returns true if the activities contained in the input stack display a shadow around 685 * their border. 686 */ 687 public static boolean hasWindowShadow(int stackId) { 688 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 689 } 690 691 /** 692 * Returns true if the activities contained in the input stack display a decor view. 693 */ 694 public static boolean hasWindowDecor(int stackId) { 695 return stackId == FREEFORM_WORKSPACE_STACK_ID; 696 } 697 698 /** 699 * Returns true if the tasks contained in the stack can be resized independently of the 700 * stack. 701 */ 702 public static boolean isTaskResizeAllowed(int stackId) { 703 return stackId == FREEFORM_WORKSPACE_STACK_ID; 704 } 705 706 /** Returns true if the task bounds should persist across power cycles. */ 707 public static boolean persistTaskBounds(int stackId) { 708 return stackId == FREEFORM_WORKSPACE_STACK_ID; 709 } 710 711 /** 712 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 713 */ 714 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 715 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 716 } 717 718 /** 719 * Returns true if we try to maintain focus in the current stack when the top activity 720 * finishes. 721 */ 722 public static boolean keepFocusInStackIfPossible(int stackId) { 723 return stackId == FREEFORM_WORKSPACE_STACK_ID 724 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 725 } 726 727 /** 728 * Returns true if Stack size is affected by the docked stack changing size. 729 */ 730 public static boolean isResizeableByDockedStack(int stackId) { 731 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 732 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 733 } 734 735 /** 736 * Returns true if the size of tasks in the input stack are affected by the docked stack 737 * changing size. 738 */ 739 public static boolean isTaskResizeableByDockedStack(int stackId) { 740 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 741 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 742 && stackId != ASSISTANT_STACK_ID; 743 } 744 745 /** 746 * Returns true if the input stack is affected by drag resizing. 747 */ 748 public static boolean isStackAffectedByDragResizing(int stackId) { 749 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 750 && stackId != ASSISTANT_STACK_ID; 751 } 752 753 /** 754 * Returns true if the windows of tasks being moved to the target stack from the source 755 * stack should be replaced, meaning that window manager will keep the old window around 756 * until the new is ready. 757 */ 758 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 759 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 760 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 761 } 762 763 /** 764 * Return whether a stackId is a stack containing floating windows. Floating windows 765 * are laid out differently as they are allowed to extend past the display bounds 766 * without overscan insets. 767 */ 768 public static boolean tasksAreFloating(int stackId) { 769 return stackId == FREEFORM_WORKSPACE_STACK_ID 770 || stackId == PINNED_STACK_ID; 771 } 772 773 /** 774 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 775 * are generally fullscreen stacks. 776 */ 777 public static boolean isBackdropToTranslucentActivity(int stackId) { 778 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 779 || stackId == ASSISTANT_STACK_ID; 780 } 781 782 /** 783 * Returns true if animation specs should be constructed for app transition that moves 784 * the task to the specified stack. 785 */ 786 public static boolean useAnimationSpecForAppTransition(int stackId) { 787 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 788 // reboots. 789 return stackId == FREEFORM_WORKSPACE_STACK_ID 790 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 791 || stackId == ASSISTANT_STACK_ID 792 || stackId == DOCKED_STACK_ID 793 || stackId == INVALID_STACK_ID; 794 } 795 796 /** 797 * Returns true if the windows in the stack can receive input keys. 798 */ 799 public static boolean canReceiveKeys(int stackId) { 800 return stackId != PINNED_STACK_ID; 801 } 802 803 /** 804 * Returns true if the stack can be visible above lockscreen. 805 */ 806 public static boolean isAllowedOverLockscreen(int stackId) { 807 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 808 stackId == ASSISTANT_STACK_ID; 809 } 810 811 /** 812 * Returns true if activities from stasks in the given {@param stackId} are allowed to 813 * enter picture-in-picture. 814 */ 815 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 816 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 817 stackId != RECENTS_STACK_ID; 818 } 819 820 public static boolean isAlwaysOnTop(int stackId) { 821 return stackId == PINNED_STACK_ID; 822 } 823 824 /** 825 * Returns true if the top task in the task is allowed to return home when finished and 826 * there are other tasks in the stack. 827 */ 828 public static boolean allowTopTaskToReturnHome(int stackId) { 829 return stackId != PINNED_STACK_ID; 830 } 831 832 /** 833 * Returns true if the stack should be resized to match the bounds specified by 834 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 835 */ 836 public static boolean resizeStackWithLaunchBounds(int stackId) { 837 return stackId == PINNED_STACK_ID; 838 } 839 840 /** 841 * Returns true if any visible windows belonging to apps in this stack should be kept on 842 * screen when the app is killed due to something like the low memory killer. 843 */ 844 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 845 return stackId != PINNED_STACK_ID; 846 } 847 848 /** 849 * Returns true if the backdrop on the client side should match the frame of the window. 850 * Returns false, if the backdrop should be fullscreen. 851 */ 852 public static boolean useWindowFrameForBackdrop(int stackId) { 853 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 854 } 855 856 /** 857 * Returns true if a window from the specified stack with {@param stackId} are normally 858 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 859 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 860 * etc. 861 */ 862 public static boolean normallyFullscreenWindows(int stackId) { 863 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 864 && stackId != DOCKED_STACK_ID; 865 } 866 867 /** 868 * Returns true if the input stack id should only be present on a device that supports 869 * multi-window mode. 870 * @see android.app.ActivityManager#supportsMultiWindow 871 */ 872 public static boolean isMultiWindowStack(int stackId) { 873 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 874 || stackId == DOCKED_STACK_ID; 875 } 876 877 /** 878 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 879 */ 880 public static boolean isHomeOrRecentsStack(int stackId) { 881 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 882 } 883 884 /** 885 * Returns true if activities contained in this stack can request visible behind by 886 * calling {@link Activity#requestVisibleBehind}. 887 * 888 * @deprecated This method's functionality is no longer supported as of 889 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 890 */ 891 @Deprecated 892 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 893 return stackId == FULLSCREEN_WORKSPACE_STACK_ID || 894 stackId == ASSISTANT_STACK_ID; 895 } 896 897 /** 898 * Returns true if this stack may be scaled without resizing, and windows within may need 899 * to be configured as such. 900 */ 901 public static boolean windowsAreScaleable(int stackId) { 902 return stackId == PINNED_STACK_ID; 903 } 904 905 /** 906 * Returns true if windows in this stack should be given move animations by default. 907 */ 908 public static boolean hasMovementAnimations(int stackId) { 909 return stackId != PINNED_STACK_ID; 910 } 911 912 /** Returns true if the input stack and its content can affect the device orientation. */ 913 public static boolean canSpecifyOrientation(int stackId) { 914 return stackId == HOME_STACK_ID 915 || stackId == RECENTS_STACK_ID 916 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 917 || stackId == ASSISTANT_STACK_ID 918 || isDynamicStack(stackId); 919 } 920 } 921 922 /** 923 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 924 * specifies the position of the created docked stack at the top half of the screen if 925 * in portrait mode or at the left half of the screen if in landscape mode. 926 * @hide 927 */ 928 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 929 930 /** 931 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 932 * specifies the position of the created docked stack at the bottom half of the screen if 933 * in portrait mode or at the right half of the screen if in landscape mode. 934 * @hide 935 */ 936 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 937 938 /** 939 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 940 * that the resize doesn't need to preserve the window, and can be skipped if bounds 941 * is unchanged. This mode is used by window manager in most cases. 942 * @hide 943 */ 944 public static final int RESIZE_MODE_SYSTEM = 0; 945 946 /** 947 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 948 * that the resize should preserve the window if possible. 949 * @hide 950 */ 951 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 952 953 /** 954 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 955 * that the resize should be performed even if the bounds appears unchanged. 956 * @hide 957 */ 958 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 959 960 /** 961 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 962 * manager during a screen rotation. 963 * @hide 964 */ 965 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 966 967 /** 968 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 969 * resize is due to a drag action. 970 * @hide 971 */ 972 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 973 974 /** 975 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 976 * that the resize should preserve the window if possible, and should not be skipped 977 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 978 * is ending. 979 * @hide 980 */ 981 public static final int RESIZE_MODE_USER_FORCED = 982 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 983 984 /** @hide */ 985 public int getFrontActivityScreenCompatMode() { 986 try { 987 return getService().getFrontActivityScreenCompatMode(); 988 } catch (RemoteException e) { 989 throw e.rethrowFromSystemServer(); 990 } 991 } 992 993 /** @hide */ 994 public void setFrontActivityScreenCompatMode(int mode) { 995 try { 996 getService().setFrontActivityScreenCompatMode(mode); 997 } catch (RemoteException e) { 998 throw e.rethrowFromSystemServer(); 999 } 1000 } 1001 1002 /** @hide */ 1003 public int getPackageScreenCompatMode(String packageName) { 1004 try { 1005 return getService().getPackageScreenCompatMode(packageName); 1006 } catch (RemoteException e) { 1007 throw e.rethrowFromSystemServer(); 1008 } 1009 } 1010 1011 /** @hide */ 1012 public void setPackageScreenCompatMode(String packageName, int mode) { 1013 try { 1014 getService().setPackageScreenCompatMode(packageName, mode); 1015 } catch (RemoteException e) { 1016 throw e.rethrowFromSystemServer(); 1017 } 1018 } 1019 1020 /** @hide */ 1021 public boolean getPackageAskScreenCompat(String packageName) { 1022 try { 1023 return getService().getPackageAskScreenCompat(packageName); 1024 } catch (RemoteException e) { 1025 throw e.rethrowFromSystemServer(); 1026 } 1027 } 1028 1029 /** @hide */ 1030 public void setPackageAskScreenCompat(String packageName, boolean ask) { 1031 try { 1032 getService().setPackageAskScreenCompat(packageName, ask); 1033 } catch (RemoteException e) { 1034 throw e.rethrowFromSystemServer(); 1035 } 1036 } 1037 1038 /** 1039 * Return the approximate per-application memory class of the current 1040 * device. This gives you an idea of how hard a memory limit you should 1041 * impose on your application to let the overall system work best. The 1042 * returned value is in megabytes; the baseline Android memory class is 1043 * 16 (which happens to be the Java heap limit of those devices); some 1044 * device with more memory may return 24 or even higher numbers. 1045 */ 1046 public int getMemoryClass() { 1047 return staticGetMemoryClass(); 1048 } 1049 1050 /** @hide */ 1051 static public int staticGetMemoryClass() { 1052 // Really brain dead right now -- just take this from the configured 1053 // vm heap size, and assume it is in megabytes and thus ends with "m". 1054 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1055 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1056 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1057 } 1058 return staticGetLargeMemoryClass(); 1059 } 1060 1061 /** 1062 * Return the approximate per-application memory class of the current 1063 * device when an application is running with a large heap. This is the 1064 * space available for memory-intensive applications; most applications 1065 * should not need this amount of memory, and should instead stay with the 1066 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1067 * This may be the same size as {@link #getMemoryClass()} on memory 1068 * constrained devices, or it may be significantly larger on devices with 1069 * a large amount of available RAM. 1070 * 1071 * <p>The is the size of the application's Dalvik heap if it has 1072 * specified <code>android:largeHeap="true"</code> in its manifest. 1073 */ 1074 public int getLargeMemoryClass() { 1075 return staticGetLargeMemoryClass(); 1076 } 1077 1078 /** @hide */ 1079 static public int staticGetLargeMemoryClass() { 1080 // Really brain dead right now -- just take this from the configured 1081 // vm heap size, and assume it is in megabytes and thus ends with "m". 1082 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1083 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1084 } 1085 1086 /** 1087 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1088 * is ultimately up to the device configuration, but currently it generally means 1089 * something in the class of a 512MB device with about a 800x480 or less screen. 1090 * This is mostly intended to be used by apps to determine whether they should turn 1091 * off certain features that require more RAM. 1092 */ 1093 public boolean isLowRamDevice() { 1094 return isLowRamDeviceStatic(); 1095 } 1096 1097 /** @hide */ 1098 public static boolean isLowRamDeviceStatic() { 1099 return RoSystemProperties.CONFIG_LOW_RAM || 1100 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 1101 } 1102 1103 /** 1104 * Returns true if this is a small battery device. Exactly whether a device is considered to be 1105 * small battery is ultimately up to the device configuration, but currently it generally means 1106 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 1107 * to determine whether certain features should be altered to account for a drastically smaller 1108 * battery. 1109 * @hide 1110 */ 1111 public static boolean isSmallBatteryDevice() { 1112 return RoSystemProperties.CONFIG_SMALL_BATTERY; 1113 } 1114 1115 /** 1116 * Used by persistent processes to determine if they are running on a 1117 * higher-end device so should be okay using hardware drawing acceleration 1118 * (which tends to consume a lot more RAM). 1119 * @hide 1120 */ 1121 static public boolean isHighEndGfx() { 1122 return !isLowRamDeviceStatic() && 1123 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1124 } 1125 1126 /** 1127 * Return the maximum number of recents entries that we will maintain and show. 1128 * @hide 1129 */ 1130 static public int getMaxRecentTasksStatic() { 1131 if (gMaxRecentTasks < 0) { 1132 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1133 } 1134 return gMaxRecentTasks; 1135 } 1136 1137 /** 1138 * Return the default limit on the number of recents that an app can make. 1139 * @hide 1140 */ 1141 static public int getDefaultAppRecentsLimitStatic() { 1142 return getMaxRecentTasksStatic() / 6; 1143 } 1144 1145 /** 1146 * Return the maximum limit on the number of recents that an app can make. 1147 * @hide 1148 */ 1149 static public int getMaxAppRecentsLimitStatic() { 1150 return getMaxRecentTasksStatic() / 2; 1151 } 1152 1153 /** 1154 * Returns true if the system supports at least one form of multi-window. 1155 * E.g. freeform, split-screen, picture-in-picture. 1156 * @hide 1157 */ 1158 static public boolean supportsMultiWindow() { 1159 return !isLowRamDeviceStatic() 1160 && Resources.getSystem().getBoolean( 1161 com.android.internal.R.bool.config_supportsMultiWindow); 1162 } 1163 1164 /** 1165 * Returns true if the system supports split screen multi-window. 1166 * @hide 1167 */ 1168 static public boolean supportsSplitScreenMultiWindow() { 1169 return supportsMultiWindow() 1170 && Resources.getSystem().getBoolean( 1171 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1172 } 1173 1174 /** @removed */ 1175 @Deprecated 1176 public static int getMaxNumPictureInPictureActions() { 1177 return 3; 1178 } 1179 1180 /** 1181 * Information you can set and retrieve about the current activity within the recent task list. 1182 */ 1183 public static class TaskDescription implements Parcelable { 1184 /** @hide */ 1185 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1186 private static final String ATTR_TASKDESCRIPTIONLABEL = 1187 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1188 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1189 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1190 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1191 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1192 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1193 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1194 1195 private String mLabel; 1196 private Bitmap mIcon; 1197 private String mIconFilename; 1198 private int mColorPrimary; 1199 private int mColorBackground; 1200 private int mStatusBarColor; 1201 private int mNavigationBarColor; 1202 1203 /** 1204 * Creates the TaskDescription to the specified values. 1205 * 1206 * @param label A label and description of the current state of this task. 1207 * @param icon An icon that represents the current state of this task. 1208 * @param colorPrimary A color to override the theme's primary color. This color must be 1209 * opaque. 1210 */ 1211 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1212 this(label, icon, null, colorPrimary, 0, 0, 0); 1213 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1214 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1215 } 1216 } 1217 1218 /** 1219 * Creates the TaskDescription to the specified values. 1220 * 1221 * @param label A label and description of the current state of this activity. 1222 * @param icon An icon that represents the current state of this activity. 1223 */ 1224 public TaskDescription(String label, Bitmap icon) { 1225 this(label, icon, null, 0, 0, 0, 0); 1226 } 1227 1228 /** 1229 * Creates the TaskDescription to the specified values. 1230 * 1231 * @param label A label and description of the current state of this activity. 1232 */ 1233 public TaskDescription(String label) { 1234 this(label, null, null, 0, 0, 0, 0); 1235 } 1236 1237 /** 1238 * Creates an empty TaskDescription. 1239 */ 1240 public TaskDescription() { 1241 this(null, null, null, 0, 0, 0, 0); 1242 } 1243 1244 /** @hide */ 1245 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1246 int colorBackground, int statusBarColor, int navigationBarColor) { 1247 mLabel = label; 1248 mIcon = icon; 1249 mIconFilename = iconFilename; 1250 mColorPrimary = colorPrimary; 1251 mColorBackground = colorBackground; 1252 mStatusBarColor = statusBarColor; 1253 mNavigationBarColor = navigationBarColor; 1254 } 1255 1256 /** 1257 * Creates a copy of another TaskDescription. 1258 */ 1259 public TaskDescription(TaskDescription td) { 1260 copyFrom(td); 1261 } 1262 1263 /** 1264 * Copies this the values from another TaskDescription. 1265 * @hide 1266 */ 1267 public void copyFrom(TaskDescription other) { 1268 mLabel = other.mLabel; 1269 mIcon = other.mIcon; 1270 mIconFilename = other.mIconFilename; 1271 mColorPrimary = other.mColorPrimary; 1272 mColorBackground = other.mColorBackground; 1273 mStatusBarColor = other.mStatusBarColor; 1274 mNavigationBarColor = other.mNavigationBarColor; 1275 } 1276 1277 /** 1278 * Copies this the values from another TaskDescription, but preserves the hidden fields 1279 * if they weren't set on {@code other} 1280 * @hide 1281 */ 1282 public void copyFromPreserveHiddenFields(TaskDescription other) { 1283 mLabel = other.mLabel; 1284 mIcon = other.mIcon; 1285 mIconFilename = other.mIconFilename; 1286 mColorPrimary = other.mColorPrimary; 1287 if (other.mColorBackground != 0) { 1288 mColorBackground = other.mColorBackground; 1289 } 1290 if (other.mStatusBarColor != 0) { 1291 mStatusBarColor = other.mStatusBarColor; 1292 } 1293 if (other.mNavigationBarColor != 0) { 1294 mNavigationBarColor = other.mNavigationBarColor; 1295 } 1296 } 1297 1298 private TaskDescription(Parcel source) { 1299 readFromParcel(source); 1300 } 1301 1302 /** 1303 * Sets the label for this task description. 1304 * @hide 1305 */ 1306 public void setLabel(String label) { 1307 mLabel = label; 1308 } 1309 1310 /** 1311 * Sets the primary color for this task description. 1312 * @hide 1313 */ 1314 public void setPrimaryColor(int primaryColor) { 1315 // Ensure that the given color is valid 1316 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1317 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1318 } 1319 mColorPrimary = primaryColor; 1320 } 1321 1322 /** 1323 * Sets the background color for this task description. 1324 * @hide 1325 */ 1326 public void setBackgroundColor(int backgroundColor) { 1327 // Ensure that the given color is valid 1328 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1329 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1330 } 1331 mColorBackground = backgroundColor; 1332 } 1333 1334 /** 1335 * @hide 1336 */ 1337 public void setStatusBarColor(int statusBarColor) { 1338 mStatusBarColor = statusBarColor; 1339 } 1340 1341 /** 1342 * @hide 1343 */ 1344 public void setNavigationBarColor(int navigationBarColor) { 1345 mNavigationBarColor = navigationBarColor; 1346 } 1347 1348 /** 1349 * Sets the icon for this task description. 1350 * @hide 1351 */ 1352 public void setIcon(Bitmap icon) { 1353 mIcon = icon; 1354 } 1355 1356 /** 1357 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1358 * bitmap. 1359 * @hide 1360 */ 1361 public void setIconFilename(String iconFilename) { 1362 mIconFilename = iconFilename; 1363 mIcon = null; 1364 } 1365 1366 /** 1367 * @return The label and description of the current state of this task. 1368 */ 1369 public String getLabel() { 1370 return mLabel; 1371 } 1372 1373 /** 1374 * @return The icon that represents the current state of this task. 1375 */ 1376 public Bitmap getIcon() { 1377 if (mIcon != null) { 1378 return mIcon; 1379 } 1380 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1381 } 1382 1383 /** @hide */ 1384 public String getIconFilename() { 1385 return mIconFilename; 1386 } 1387 1388 /** @hide */ 1389 public Bitmap getInMemoryIcon() { 1390 return mIcon; 1391 } 1392 1393 /** @hide */ 1394 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1395 if (iconFilename != null) { 1396 try { 1397 return getService().getTaskDescriptionIcon(iconFilename, 1398 userId); 1399 } catch (RemoteException e) { 1400 throw e.rethrowFromSystemServer(); 1401 } 1402 } 1403 return null; 1404 } 1405 1406 /** 1407 * @return The color override on the theme's primary color. 1408 */ 1409 public int getPrimaryColor() { 1410 return mColorPrimary; 1411 } 1412 1413 /** 1414 * @return The background color. 1415 * @hide 1416 */ 1417 public int getBackgroundColor() { 1418 return mColorBackground; 1419 } 1420 1421 /** 1422 * @hide 1423 */ 1424 public int getStatusBarColor() { 1425 return mStatusBarColor; 1426 } 1427 1428 /** 1429 * @hide 1430 */ 1431 public int getNavigationBarColor() { 1432 return mNavigationBarColor; 1433 } 1434 1435 /** @hide */ 1436 public void saveToXml(XmlSerializer out) throws IOException { 1437 if (mLabel != null) { 1438 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1439 } 1440 if (mColorPrimary != 0) { 1441 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1442 Integer.toHexString(mColorPrimary)); 1443 } 1444 if (mColorBackground != 0) { 1445 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1446 Integer.toHexString(mColorBackground)); 1447 } 1448 if (mIconFilename != null) { 1449 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1450 } 1451 } 1452 1453 /** @hide */ 1454 public void restoreFromXml(String attrName, String attrValue) { 1455 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1456 setLabel(attrValue); 1457 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1458 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1459 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1460 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1461 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1462 setIconFilename(attrValue); 1463 } 1464 } 1465 1466 @Override 1467 public int describeContents() { 1468 return 0; 1469 } 1470 1471 @Override 1472 public void writeToParcel(Parcel dest, int flags) { 1473 if (mLabel == null) { 1474 dest.writeInt(0); 1475 } else { 1476 dest.writeInt(1); 1477 dest.writeString(mLabel); 1478 } 1479 if (mIcon == null) { 1480 dest.writeInt(0); 1481 } else { 1482 dest.writeInt(1); 1483 mIcon.writeToParcel(dest, 0); 1484 } 1485 dest.writeInt(mColorPrimary); 1486 dest.writeInt(mColorBackground); 1487 dest.writeInt(mStatusBarColor); 1488 dest.writeInt(mNavigationBarColor); 1489 if (mIconFilename == null) { 1490 dest.writeInt(0); 1491 } else { 1492 dest.writeInt(1); 1493 dest.writeString(mIconFilename); 1494 } 1495 } 1496 1497 public void readFromParcel(Parcel source) { 1498 mLabel = source.readInt() > 0 ? source.readString() : null; 1499 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1500 mColorPrimary = source.readInt(); 1501 mColorBackground = source.readInt(); 1502 mStatusBarColor = source.readInt(); 1503 mNavigationBarColor = source.readInt(); 1504 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1505 } 1506 1507 public static final Creator<TaskDescription> CREATOR 1508 = new Creator<TaskDescription>() { 1509 public TaskDescription createFromParcel(Parcel source) { 1510 return new TaskDescription(source); 1511 } 1512 public TaskDescription[] newArray(int size) { 1513 return new TaskDescription[size]; 1514 } 1515 }; 1516 1517 @Override 1518 public String toString() { 1519 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1520 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1521 " colorBackground: " + mColorBackground + 1522 " statusBarColor: " + mColorBackground + 1523 " navigationBarColor: " + mNavigationBarColor; 1524 } 1525 } 1526 1527 /** 1528 * Information you can retrieve about tasks that the user has most recently 1529 * started or visited. 1530 */ 1531 public static class RecentTaskInfo implements Parcelable { 1532 /** 1533 * If this task is currently running, this is the identifier for it. 1534 * If it is not running, this will be -1. 1535 */ 1536 public int id; 1537 1538 /** 1539 * The true identifier of this task, valid even if it is not running. 1540 */ 1541 public int persistentId; 1542 1543 /** 1544 * The original Intent used to launch the task. You can use this 1545 * Intent to re-launch the task (if it is no longer running) or bring 1546 * the current task to the front. 1547 */ 1548 public Intent baseIntent; 1549 1550 /** 1551 * If this task was started from an alias, this is the actual 1552 * activity component that was initially started; the component of 1553 * the baseIntent in this case is the name of the actual activity 1554 * implementation that the alias referred to. Otherwise, this is null. 1555 */ 1556 public ComponentName origActivity; 1557 1558 /** 1559 * The actual activity component that started the task. 1560 * @hide 1561 */ 1562 @Nullable 1563 public ComponentName realActivity; 1564 1565 /** 1566 * Description of the task's last state. 1567 */ 1568 public CharSequence description; 1569 1570 /** 1571 * The id of the ActivityStack this Task was on most recently. 1572 * @hide 1573 */ 1574 public int stackId; 1575 1576 /** 1577 * The id of the user the task was running as. 1578 * @hide 1579 */ 1580 public int userId; 1581 1582 /** 1583 * The first time this task was active. 1584 * @hide 1585 */ 1586 public long firstActiveTime; 1587 1588 /** 1589 * The last time this task was active. 1590 * @hide 1591 */ 1592 public long lastActiveTime; 1593 1594 /** 1595 * The recent activity values for the highest activity in the stack to have set the values. 1596 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1597 */ 1598 public TaskDescription taskDescription; 1599 1600 /** 1601 * Task affiliation for grouping with other tasks. 1602 */ 1603 public int affiliatedTaskId; 1604 1605 /** 1606 * Task affiliation color of the source task with the affiliated task id. 1607 * 1608 * @hide 1609 */ 1610 public int affiliatedTaskColor; 1611 1612 /** 1613 * The component launched as the first activity in the task. 1614 * This can be considered the "application" of this task. 1615 */ 1616 public ComponentName baseActivity; 1617 1618 /** 1619 * The activity component at the top of the history stack of the task. 1620 * This is what the user is currently doing. 1621 */ 1622 public ComponentName topActivity; 1623 1624 /** 1625 * Number of activities in this task. 1626 */ 1627 public int numActivities; 1628 1629 /** 1630 * The bounds of the task. 1631 * @hide 1632 */ 1633 public Rect bounds; 1634 1635 /** 1636 * True if the task can go in the docked stack. 1637 * @hide 1638 */ 1639 public boolean supportsSplitScreenMultiWindow; 1640 1641 /** 1642 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1643 * @hide 1644 */ 1645 public int resizeMode; 1646 1647 public RecentTaskInfo() { 1648 } 1649 1650 @Override 1651 public int describeContents() { 1652 return 0; 1653 } 1654 1655 @Override 1656 public void writeToParcel(Parcel dest, int flags) { 1657 dest.writeInt(id); 1658 dest.writeInt(persistentId); 1659 if (baseIntent != null) { 1660 dest.writeInt(1); 1661 baseIntent.writeToParcel(dest, 0); 1662 } else { 1663 dest.writeInt(0); 1664 } 1665 ComponentName.writeToParcel(origActivity, dest); 1666 ComponentName.writeToParcel(realActivity, dest); 1667 TextUtils.writeToParcel(description, dest, 1668 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1669 if (taskDescription != null) { 1670 dest.writeInt(1); 1671 taskDescription.writeToParcel(dest, 0); 1672 } else { 1673 dest.writeInt(0); 1674 } 1675 dest.writeInt(stackId); 1676 dest.writeInt(userId); 1677 dest.writeLong(firstActiveTime); 1678 dest.writeLong(lastActiveTime); 1679 dest.writeInt(affiliatedTaskId); 1680 dest.writeInt(affiliatedTaskColor); 1681 ComponentName.writeToParcel(baseActivity, dest); 1682 ComponentName.writeToParcel(topActivity, dest); 1683 dest.writeInt(numActivities); 1684 if (bounds != null) { 1685 dest.writeInt(1); 1686 bounds.writeToParcel(dest, 0); 1687 } else { 1688 dest.writeInt(0); 1689 } 1690 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1691 dest.writeInt(resizeMode); 1692 } 1693 1694 public void readFromParcel(Parcel source) { 1695 id = source.readInt(); 1696 persistentId = source.readInt(); 1697 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1698 origActivity = ComponentName.readFromParcel(source); 1699 realActivity = ComponentName.readFromParcel(source); 1700 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1701 taskDescription = source.readInt() > 0 ? 1702 TaskDescription.CREATOR.createFromParcel(source) : null; 1703 stackId = source.readInt(); 1704 userId = source.readInt(); 1705 firstActiveTime = source.readLong(); 1706 lastActiveTime = source.readLong(); 1707 affiliatedTaskId = source.readInt(); 1708 affiliatedTaskColor = source.readInt(); 1709 baseActivity = ComponentName.readFromParcel(source); 1710 topActivity = ComponentName.readFromParcel(source); 1711 numActivities = source.readInt(); 1712 bounds = source.readInt() > 0 ? 1713 Rect.CREATOR.createFromParcel(source) : null; 1714 supportsSplitScreenMultiWindow = source.readInt() == 1; 1715 resizeMode = source.readInt(); 1716 } 1717 1718 public static final Creator<RecentTaskInfo> CREATOR 1719 = new Creator<RecentTaskInfo>() { 1720 public RecentTaskInfo createFromParcel(Parcel source) { 1721 return new RecentTaskInfo(source); 1722 } 1723 public RecentTaskInfo[] newArray(int size) { 1724 return new RecentTaskInfo[size]; 1725 } 1726 }; 1727 1728 private RecentTaskInfo(Parcel source) { 1729 readFromParcel(source); 1730 } 1731 } 1732 1733 /** 1734 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1735 * that have set their 1736 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1737 */ 1738 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1739 1740 /** 1741 * Provides a list that does not contain any 1742 * recent tasks that currently are not available to the user. 1743 */ 1744 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1745 1746 /** 1747 * Provides a list that contains recent tasks for all 1748 * profiles of a user. 1749 * @hide 1750 */ 1751 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1752 1753 /** 1754 * Ignores all tasks that are on the home stack. 1755 * @hide 1756 */ 1757 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1758 1759 /** 1760 * Ignores the top task in the docked stack. 1761 * @hide 1762 */ 1763 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1764 1765 /** 1766 * Ignores all tasks that are on the pinned stack. 1767 * @hide 1768 */ 1769 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1770 1771 /** 1772 * <p></p>Return a list of the tasks that the user has recently launched, with 1773 * the most recent being first and older ones after in order. 1774 * 1775 * <p><b>Note: this method is only intended for debugging and presenting 1776 * task management user interfaces</b>. This should never be used for 1777 * core logic in an application, such as deciding between different 1778 * behaviors based on the information found here. Such uses are 1779 * <em>not</em> supported, and will likely break in the future. For 1780 * example, if multiple applications can be actively running at the 1781 * same time, assumptions made about the meaning of the data here for 1782 * purposes of control flow will be incorrect.</p> 1783 * 1784 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1785 * no longer available to third party applications: the introduction of 1786 * document-centric recents means 1787 * it can leak personal information to the caller. For backwards compatibility, 1788 * it will still return a small subset of its data: at least the caller's 1789 * own tasks (though see {@link #getAppTasks()} for the correct supported 1790 * way to retrieve that information), and possibly some other tasks 1791 * such as home that are known to not be sensitive. 1792 * 1793 * @param maxNum The maximum number of entries to return in the list. The 1794 * actual number returned may be smaller, depending on how many tasks the 1795 * user has started and the maximum number the system can remember. 1796 * @param flags Information about what to return. May be any combination 1797 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1798 * 1799 * @return Returns a list of RecentTaskInfo records describing each of 1800 * the recent tasks. 1801 */ 1802 @Deprecated 1803 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1804 throws SecurityException { 1805 try { 1806 return getService().getRecentTasks(maxNum, 1807 flags, UserHandle.myUserId()).getList(); 1808 } catch (RemoteException e) { 1809 throw e.rethrowFromSystemServer(); 1810 } 1811 } 1812 1813 /** 1814 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1815 * specific user. It requires holding 1816 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1817 * @param maxNum The maximum number of entries to return in the list. The 1818 * actual number returned may be smaller, depending on how many tasks the 1819 * user has started and the maximum number the system can remember. 1820 * @param flags Information about what to return. May be any combination 1821 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1822 * 1823 * @return Returns a list of RecentTaskInfo records describing each of 1824 * the recent tasks. Most recently activated tasks go first. 1825 * 1826 * @hide 1827 */ 1828 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1829 throws SecurityException { 1830 try { 1831 return getService().getRecentTasks(maxNum, 1832 flags, userId).getList(); 1833 } catch (RemoteException e) { 1834 throw e.rethrowFromSystemServer(); 1835 } 1836 } 1837 1838 /** 1839 * Information you can retrieve about a particular task that is currently 1840 * "running" in the system. Note that a running task does not mean the 1841 * given task actually has a process it is actively running in; it simply 1842 * means that the user has gone to it and never closed it, but currently 1843 * the system may have killed its process and is only holding on to its 1844 * last state in order to restart it when the user returns. 1845 */ 1846 public static class RunningTaskInfo implements Parcelable { 1847 /** 1848 * A unique identifier for this task. 1849 */ 1850 public int id; 1851 1852 /** 1853 * The stack that currently contains this task. 1854 * @hide 1855 */ 1856 public int stackId; 1857 1858 /** 1859 * The component launched as the first activity in the task. This can 1860 * be considered the "application" of this task. 1861 */ 1862 public ComponentName baseActivity; 1863 1864 /** 1865 * The activity component at the top of the history stack of the task. 1866 * This is what the user is currently doing. 1867 */ 1868 public ComponentName topActivity; 1869 1870 /** 1871 * Thumbnail representation of the task's current state. Currently 1872 * always null. 1873 */ 1874 public Bitmap thumbnail; 1875 1876 /** 1877 * Description of the task's current state. 1878 */ 1879 public CharSequence description; 1880 1881 /** 1882 * Number of activities in this task. 1883 */ 1884 public int numActivities; 1885 1886 /** 1887 * Number of activities that are currently running (not stopped 1888 * and persisted) in this task. 1889 */ 1890 public int numRunning; 1891 1892 /** 1893 * Last time task was run. For sorting. 1894 * @hide 1895 */ 1896 public long lastActiveTime; 1897 1898 /** 1899 * True if the task can go in the docked stack. 1900 * @hide 1901 */ 1902 public boolean supportsSplitScreenMultiWindow; 1903 1904 /** 1905 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1906 * @hide 1907 */ 1908 public int resizeMode; 1909 1910 public RunningTaskInfo() { 1911 } 1912 1913 public int describeContents() { 1914 return 0; 1915 } 1916 1917 public void writeToParcel(Parcel dest, int flags) { 1918 dest.writeInt(id); 1919 dest.writeInt(stackId); 1920 ComponentName.writeToParcel(baseActivity, dest); 1921 ComponentName.writeToParcel(topActivity, dest); 1922 if (thumbnail != null) { 1923 dest.writeInt(1); 1924 thumbnail.writeToParcel(dest, 0); 1925 } else { 1926 dest.writeInt(0); 1927 } 1928 TextUtils.writeToParcel(description, dest, 1929 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1930 dest.writeInt(numActivities); 1931 dest.writeInt(numRunning); 1932 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1933 dest.writeInt(resizeMode); 1934 } 1935 1936 public void readFromParcel(Parcel source) { 1937 id = source.readInt(); 1938 stackId = source.readInt(); 1939 baseActivity = ComponentName.readFromParcel(source); 1940 topActivity = ComponentName.readFromParcel(source); 1941 if (source.readInt() != 0) { 1942 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1943 } else { 1944 thumbnail = null; 1945 } 1946 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1947 numActivities = source.readInt(); 1948 numRunning = source.readInt(); 1949 supportsSplitScreenMultiWindow = source.readInt() != 0; 1950 resizeMode = source.readInt(); 1951 } 1952 1953 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1954 public RunningTaskInfo createFromParcel(Parcel source) { 1955 return new RunningTaskInfo(source); 1956 } 1957 public RunningTaskInfo[] newArray(int size) { 1958 return new RunningTaskInfo[size]; 1959 } 1960 }; 1961 1962 private RunningTaskInfo(Parcel source) { 1963 readFromParcel(source); 1964 } 1965 } 1966 1967 /** 1968 * Get the list of tasks associated with the calling application. 1969 * 1970 * @return The list of tasks associated with the application making this call. 1971 * @throws SecurityException 1972 */ 1973 public List<ActivityManager.AppTask> getAppTasks() { 1974 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1975 List<IBinder> appTasks; 1976 try { 1977 appTasks = getService().getAppTasks(mContext.getPackageName()); 1978 } catch (RemoteException e) { 1979 throw e.rethrowFromSystemServer(); 1980 } 1981 int numAppTasks = appTasks.size(); 1982 for (int i = 0; i < numAppTasks; i++) { 1983 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1984 } 1985 return tasks; 1986 } 1987 1988 /** 1989 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1990 * with {@link #addAppTask}. 1991 */ 1992 public Size getAppTaskThumbnailSize() { 1993 synchronized (this) { 1994 ensureAppTaskThumbnailSizeLocked(); 1995 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1996 } 1997 } 1998 1999 private void ensureAppTaskThumbnailSizeLocked() { 2000 if (mAppTaskThumbnailSize == null) { 2001 try { 2002 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 2003 } catch (RemoteException e) { 2004 throw e.rethrowFromSystemServer(); 2005 } 2006 } 2007 } 2008 2009 /** 2010 * Add a new {@link AppTask} for the calling application. This will create a new 2011 * recents entry that is added to the <b>end</b> of all existing recents. 2012 * 2013 * @param activity The activity that is adding the entry. This is used to help determine 2014 * the context that the new recents entry will be in. 2015 * @param intent The Intent that describes the recents entry. This is the same Intent that 2016 * you would have used to launch the activity for it. In generally you will want to set 2017 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 2018 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 2019 * entry will exist without an activity, so it doesn't make sense to not retain it when 2020 * its activity disappears. The given Intent here also must have an explicit ComponentName 2021 * set on it. 2022 * @param description Optional additional description information. 2023 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 2024 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 2025 * recreated in your process, probably in a way you don't like, before the recents entry 2026 * is added. 2027 * 2028 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 2029 * most likely cause of failure is that there is no more room for more tasks for your app. 2030 */ 2031 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 2032 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 2033 Point size; 2034 synchronized (this) { 2035 ensureAppTaskThumbnailSizeLocked(); 2036 size = mAppTaskThumbnailSize; 2037 } 2038 final int tw = thumbnail.getWidth(); 2039 final int th = thumbnail.getHeight(); 2040 if (tw != size.x || th != size.y) { 2041 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 2042 2043 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 2044 float scale; 2045 float dx = 0, dy = 0; 2046 if (tw * size.x > size.y * th) { 2047 scale = (float) size.x / (float) th; 2048 dx = (size.y - tw * scale) * 0.5f; 2049 } else { 2050 scale = (float) size.y / (float) tw; 2051 dy = (size.x - th * scale) * 0.5f; 2052 } 2053 Matrix matrix = new Matrix(); 2054 matrix.setScale(scale, scale); 2055 matrix.postTranslate((int) (dx + 0.5f), 0); 2056 2057 Canvas canvas = new Canvas(bm); 2058 canvas.drawBitmap(thumbnail, matrix, null); 2059 canvas.setBitmap(null); 2060 2061 thumbnail = bm; 2062 } 2063 if (description == null) { 2064 description = new TaskDescription(); 2065 } 2066 try { 2067 return getService().addAppTask(activity.getActivityToken(), 2068 intent, description, thumbnail); 2069 } catch (RemoteException e) { 2070 throw e.rethrowFromSystemServer(); 2071 } 2072 } 2073 2074 /** 2075 * Return a list of the tasks that are currently running, with 2076 * the most recent being first and older ones after in order. Note that 2077 * "running" does not mean any of the task's code is currently loaded or 2078 * activity -- the task may have been frozen by the system, so that it 2079 * can be restarted in its previous state when next brought to the 2080 * foreground. 2081 * 2082 * <p><b>Note: this method is only intended for debugging and presenting 2083 * task management user interfaces</b>. This should never be used for 2084 * core logic in an application, such as deciding between different 2085 * behaviors based on the information found here. Such uses are 2086 * <em>not</em> supported, and will likely break in the future. For 2087 * example, if multiple applications can be actively running at the 2088 * same time, assumptions made about the meaning of the data here for 2089 * purposes of control flow will be incorrect.</p> 2090 * 2091 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 2092 * is no longer available to third party 2093 * applications: the introduction of document-centric recents means 2094 * it can leak person information to the caller. For backwards compatibility, 2095 * it will still retu rn a small subset of its data: at least the caller's 2096 * own tasks, and possibly some other tasks 2097 * such as home that are known to not be sensitive. 2098 * 2099 * @param maxNum The maximum number of entries to return in the list. The 2100 * actual number returned may be smaller, depending on how many tasks the 2101 * user has started. 2102 * 2103 * @return Returns a list of RunningTaskInfo records describing each of 2104 * the running tasks. 2105 */ 2106 @Deprecated 2107 public List<RunningTaskInfo> getRunningTasks(int maxNum) 2108 throws SecurityException { 2109 try { 2110 return getService().getTasks(maxNum, 0); 2111 } catch (RemoteException e) { 2112 throw e.rethrowFromSystemServer(); 2113 } 2114 } 2115 2116 /** 2117 * Completely remove the given task. 2118 * 2119 * @param taskId Identifier of the task to be removed. 2120 * @return Returns true if the given task was found and removed. 2121 * 2122 * @hide 2123 */ 2124 public boolean removeTask(int taskId) throws SecurityException { 2125 try { 2126 return getService().removeTask(taskId); 2127 } catch (RemoteException e) { 2128 throw e.rethrowFromSystemServer(); 2129 } 2130 } 2131 2132 /** 2133 * Metadata related to the {@link TaskThumbnail}. 2134 * 2135 * @hide 2136 */ 2137 public static class TaskThumbnailInfo implements Parcelable { 2138 /** @hide */ 2139 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2140 private static final String ATTR_TASK_WIDTH = 2141 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2142 private static final String ATTR_TASK_HEIGHT = 2143 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2144 private static final String ATTR_SCREEN_ORIENTATION = 2145 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2146 2147 public int taskWidth; 2148 public int taskHeight; 2149 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2150 2151 public TaskThumbnailInfo() { 2152 // Do nothing 2153 } 2154 2155 private TaskThumbnailInfo(Parcel source) { 2156 readFromParcel(source); 2157 } 2158 2159 /** 2160 * Resets this info state to the initial state. 2161 * @hide 2162 */ 2163 public void reset() { 2164 taskWidth = 0; 2165 taskHeight = 0; 2166 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2167 } 2168 2169 /** 2170 * Copies from another ThumbnailInfo. 2171 */ 2172 public void copyFrom(TaskThumbnailInfo o) { 2173 taskWidth = o.taskWidth; 2174 taskHeight = o.taskHeight; 2175 screenOrientation = o.screenOrientation; 2176 } 2177 2178 /** @hide */ 2179 public void saveToXml(XmlSerializer out) throws IOException { 2180 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2181 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2182 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2183 } 2184 2185 /** @hide */ 2186 public void restoreFromXml(String attrName, String attrValue) { 2187 if (ATTR_TASK_WIDTH.equals(attrName)) { 2188 taskWidth = Integer.parseInt(attrValue); 2189 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2190 taskHeight = Integer.parseInt(attrValue); 2191 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2192 screenOrientation = Integer.parseInt(attrValue); 2193 } 2194 } 2195 2196 public int describeContents() { 2197 return 0; 2198 } 2199 2200 public void writeToParcel(Parcel dest, int flags) { 2201 dest.writeInt(taskWidth); 2202 dest.writeInt(taskHeight); 2203 dest.writeInt(screenOrientation); 2204 } 2205 2206 public void readFromParcel(Parcel source) { 2207 taskWidth = source.readInt(); 2208 taskHeight = source.readInt(); 2209 screenOrientation = source.readInt(); 2210 } 2211 2212 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2213 public TaskThumbnailInfo createFromParcel(Parcel source) { 2214 return new TaskThumbnailInfo(source); 2215 } 2216 public TaskThumbnailInfo[] newArray(int size) { 2217 return new TaskThumbnailInfo[size]; 2218 } 2219 }; 2220 } 2221 2222 /** @hide */ 2223 public static class TaskThumbnail implements Parcelable { 2224 public Bitmap mainThumbnail; 2225 public ParcelFileDescriptor thumbnailFileDescriptor; 2226 public TaskThumbnailInfo thumbnailInfo; 2227 2228 public TaskThumbnail() { 2229 } 2230 2231 private TaskThumbnail(Parcel source) { 2232 readFromParcel(source); 2233 } 2234 2235 public int describeContents() { 2236 if (thumbnailFileDescriptor != null) { 2237 return thumbnailFileDescriptor.describeContents(); 2238 } 2239 return 0; 2240 } 2241 2242 public void writeToParcel(Parcel dest, int flags) { 2243 if (mainThumbnail != null) { 2244 dest.writeInt(1); 2245 mainThumbnail.writeToParcel(dest, flags); 2246 } else { 2247 dest.writeInt(0); 2248 } 2249 if (thumbnailFileDescriptor != null) { 2250 dest.writeInt(1); 2251 thumbnailFileDescriptor.writeToParcel(dest, flags); 2252 } else { 2253 dest.writeInt(0); 2254 } 2255 if (thumbnailInfo != null) { 2256 dest.writeInt(1); 2257 thumbnailInfo.writeToParcel(dest, flags); 2258 } else { 2259 dest.writeInt(0); 2260 } 2261 } 2262 2263 public void readFromParcel(Parcel source) { 2264 if (source.readInt() != 0) { 2265 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2266 } else { 2267 mainThumbnail = null; 2268 } 2269 if (source.readInt() != 0) { 2270 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2271 } else { 2272 thumbnailFileDescriptor = null; 2273 } 2274 if (source.readInt() != 0) { 2275 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2276 } else { 2277 thumbnailInfo = null; 2278 } 2279 } 2280 2281 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2282 public TaskThumbnail createFromParcel(Parcel source) { 2283 return new TaskThumbnail(source); 2284 } 2285 public TaskThumbnail[] newArray(int size) { 2286 return new TaskThumbnail[size]; 2287 } 2288 }; 2289 } 2290 2291 /** 2292 * Represents a task snapshot. 2293 * @hide 2294 */ 2295 public static class TaskSnapshot implements Parcelable { 2296 2297 private final GraphicBuffer mSnapshot; 2298 private final int mOrientation; 2299 private final Rect mContentInsets; 2300 private final boolean mReducedResolution; 2301 private final float mScale; 2302 2303 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2304 boolean reducedResolution, float scale) { 2305 mSnapshot = snapshot; 2306 mOrientation = orientation; 2307 mContentInsets = new Rect(contentInsets); 2308 mReducedResolution = reducedResolution; 2309 mScale = scale; 2310 } 2311 2312 private TaskSnapshot(Parcel source) { 2313 mSnapshot = source.readParcelable(null /* classLoader */); 2314 mOrientation = source.readInt(); 2315 mContentInsets = source.readParcelable(null /* classLoader */); 2316 mReducedResolution = source.readBoolean(); 2317 mScale = source.readFloat(); 2318 } 2319 2320 /** 2321 * @return The graphic buffer representing the screenshot. 2322 */ 2323 public GraphicBuffer getSnapshot() { 2324 return mSnapshot; 2325 } 2326 2327 /** 2328 * @return The screen orientation the screenshot was taken in. 2329 */ 2330 public int getOrientation() { 2331 return mOrientation; 2332 } 2333 2334 /** 2335 * @return The system/content insets on the snapshot. These can be clipped off in order to 2336 * remove any areas behind system bars in the snapshot. 2337 */ 2338 public Rect getContentInsets() { 2339 return mContentInsets; 2340 } 2341 2342 /** 2343 * @return Whether this snapshot is a down-sampled version of the full resolution. 2344 */ 2345 public boolean isReducedResolution() { 2346 return mReducedResolution; 2347 } 2348 2349 /** 2350 * @return The scale this snapshot was taken in. 2351 */ 2352 public float getScale() { 2353 return mScale; 2354 } 2355 2356 @Override 2357 public int describeContents() { 2358 return 0; 2359 } 2360 2361 @Override 2362 public void writeToParcel(Parcel dest, int flags) { 2363 dest.writeParcelable(mSnapshot, 0); 2364 dest.writeInt(mOrientation); 2365 dest.writeParcelable(mContentInsets, 0); 2366 dest.writeBoolean(mReducedResolution); 2367 dest.writeFloat(mScale); 2368 } 2369 2370 @Override 2371 public String toString() { 2372 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2373 + " mContentInsets=" + mContentInsets.toShortString() 2374 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2375 } 2376 2377 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2378 public TaskSnapshot createFromParcel(Parcel source) { 2379 return new TaskSnapshot(source); 2380 } 2381 public TaskSnapshot[] newArray(int size) { 2382 return new TaskSnapshot[size]; 2383 } 2384 }; 2385 } 2386 2387 /** @hide */ 2388 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2389 try { 2390 return getService().getTaskThumbnail(id); 2391 } catch (RemoteException e) { 2392 throw e.rethrowFromSystemServer(); 2393 } 2394 } 2395 2396 /** @hide */ 2397 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2398 MOVE_TASK_WITH_HOME, 2399 MOVE_TASK_NO_USER_ACTION, 2400 }) 2401 @Retention(RetentionPolicy.SOURCE) 2402 public @interface MoveTaskFlags {} 2403 2404 /** 2405 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2406 * activity along with the task, so it is positioned immediately behind 2407 * the task. 2408 */ 2409 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2410 2411 /** 2412 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2413 * user-instigated action, so the current activity will not receive a 2414 * hint that the user is leaving. 2415 */ 2416 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2417 2418 /** 2419 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2420 * with a null options argument. 2421 * 2422 * @param taskId The identifier of the task to be moved, as found in 2423 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2424 * @param flags Additional operational flags. 2425 */ 2426 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2427 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2428 moveTaskToFront(taskId, flags, null); 2429 } 2430 2431 /** 2432 * Ask that the task associated with a given task ID be moved to the 2433 * front of the stack, so it is now visible to the user. 2434 * 2435 * @param taskId The identifier of the task to be moved, as found in 2436 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2437 * @param flags Additional operational flags. 2438 * @param options Additional options for the operation, either null or 2439 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2440 * Context.startActivity(Intent, Bundle)}. 2441 */ 2442 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2443 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2444 try { 2445 getService().moveTaskToFront(taskId, flags, options); 2446 } catch (RemoteException e) { 2447 throw e.rethrowFromSystemServer(); 2448 } 2449 } 2450 2451 /** 2452 * Information you can retrieve about a particular Service that is 2453 * currently running in the system. 2454 */ 2455 public static class RunningServiceInfo implements Parcelable { 2456 /** 2457 * The service component. 2458 */ 2459 public ComponentName service; 2460 2461 /** 2462 * If non-zero, this is the process the service is running in. 2463 */ 2464 public int pid; 2465 2466 /** 2467 * The UID that owns this service. 2468 */ 2469 public int uid; 2470 2471 /** 2472 * The name of the process this service runs in. 2473 */ 2474 public String process; 2475 2476 /** 2477 * Set to true if the service has asked to run as a foreground process. 2478 */ 2479 public boolean foreground; 2480 2481 /** 2482 * The time when the service was first made active, either by someone 2483 * starting or binding to it. This 2484 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2485 */ 2486 public long activeSince; 2487 2488 /** 2489 * Set to true if this service has been explicitly started. 2490 */ 2491 public boolean started; 2492 2493 /** 2494 * Number of clients connected to the service. 2495 */ 2496 public int clientCount; 2497 2498 /** 2499 * Number of times the service's process has crashed while the service 2500 * is running. 2501 */ 2502 public int crashCount; 2503 2504 /** 2505 * The time when there was last activity in the service (either 2506 * explicit requests to start it or clients binding to it). This 2507 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2508 */ 2509 public long lastActivityTime; 2510 2511 /** 2512 * If non-zero, this service is not currently running, but scheduled to 2513 * restart at the given time. 2514 */ 2515 public long restarting; 2516 2517 /** 2518 * Bit for {@link #flags}: set if this service has been 2519 * explicitly started. 2520 */ 2521 public static final int FLAG_STARTED = 1<<0; 2522 2523 /** 2524 * Bit for {@link #flags}: set if the service has asked to 2525 * run as a foreground process. 2526 */ 2527 public static final int FLAG_FOREGROUND = 1<<1; 2528 2529 /** 2530 * Bit for {@link #flags}: set if the service is running in a 2531 * core system process. 2532 */ 2533 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2534 2535 /** 2536 * Bit for {@link #flags}: set if the service is running in a 2537 * persistent process. 2538 */ 2539 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2540 2541 /** 2542 * Running flags. 2543 */ 2544 public int flags; 2545 2546 /** 2547 * For special services that are bound to by system code, this is 2548 * the package that holds the binding. 2549 */ 2550 public String clientPackage; 2551 2552 /** 2553 * For special services that are bound to by system code, this is 2554 * a string resource providing a user-visible label for who the 2555 * client is. 2556 */ 2557 public int clientLabel; 2558 2559 public RunningServiceInfo() { 2560 } 2561 2562 public int describeContents() { 2563 return 0; 2564 } 2565 2566 public void writeToParcel(Parcel dest, int flags) { 2567 ComponentName.writeToParcel(service, dest); 2568 dest.writeInt(pid); 2569 dest.writeInt(uid); 2570 dest.writeString(process); 2571 dest.writeInt(foreground ? 1 : 0); 2572 dest.writeLong(activeSince); 2573 dest.writeInt(started ? 1 : 0); 2574 dest.writeInt(clientCount); 2575 dest.writeInt(crashCount); 2576 dest.writeLong(lastActivityTime); 2577 dest.writeLong(restarting); 2578 dest.writeInt(this.flags); 2579 dest.writeString(clientPackage); 2580 dest.writeInt(clientLabel); 2581 } 2582 2583 public void readFromParcel(Parcel source) { 2584 service = ComponentName.readFromParcel(source); 2585 pid = source.readInt(); 2586 uid = source.readInt(); 2587 process = source.readString(); 2588 foreground = source.readInt() != 0; 2589 activeSince = source.readLong(); 2590 started = source.readInt() != 0; 2591 clientCount = source.readInt(); 2592 crashCount = source.readInt(); 2593 lastActivityTime = source.readLong(); 2594 restarting = source.readLong(); 2595 flags = source.readInt(); 2596 clientPackage = source.readString(); 2597 clientLabel = source.readInt(); 2598 } 2599 2600 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2601 public RunningServiceInfo createFromParcel(Parcel source) { 2602 return new RunningServiceInfo(source); 2603 } 2604 public RunningServiceInfo[] newArray(int size) { 2605 return new RunningServiceInfo[size]; 2606 } 2607 }; 2608 2609 private RunningServiceInfo(Parcel source) { 2610 readFromParcel(source); 2611 } 2612 } 2613 2614 /** 2615 * Return a list of the services that are currently running. 2616 * 2617 * <p><b>Note: this method is only intended for debugging or implementing 2618 * service management type user interfaces.</b></p> 2619 * 2620 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2621 * is no longer available to third party applications. For backwards compatibility, 2622 * it will still return the caller's own services. 2623 * 2624 * @param maxNum The maximum number of entries to return in the list. The 2625 * actual number returned may be smaller, depending on how many services 2626 * are running. 2627 * 2628 * @return Returns a list of RunningServiceInfo records describing each of 2629 * the running tasks. 2630 */ 2631 @Deprecated 2632 public List<RunningServiceInfo> getRunningServices(int maxNum) 2633 throws SecurityException { 2634 try { 2635 return getService() 2636 .getServices(maxNum, 0); 2637 } catch (RemoteException e) { 2638 throw e.rethrowFromSystemServer(); 2639 } 2640 } 2641 2642 /** 2643 * Returns a PendingIntent you can start to show a control panel for the 2644 * given running service. If the service does not have a control panel, 2645 * null is returned. 2646 */ 2647 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2648 throws SecurityException { 2649 try { 2650 return getService() 2651 .getRunningServiceControlPanel(service); 2652 } catch (RemoteException e) { 2653 throw e.rethrowFromSystemServer(); 2654 } 2655 } 2656 2657 /** 2658 * Information you can retrieve about the available memory through 2659 * {@link ActivityManager#getMemoryInfo}. 2660 */ 2661 public static class MemoryInfo implements Parcelable { 2662 /** 2663 * The available memory on the system. This number should not 2664 * be considered absolute: due to the nature of the kernel, a significant 2665 * portion of this memory is actually in use and needed for the overall 2666 * system to run well. 2667 */ 2668 public long availMem; 2669 2670 /** 2671 * The total memory accessible by the kernel. This is basically the 2672 * RAM size of the device, not including below-kernel fixed allocations 2673 * like DMA buffers, RAM for the baseband CPU, etc. 2674 */ 2675 public long totalMem; 2676 2677 /** 2678 * The threshold of {@link #availMem} at which we consider memory to be 2679 * low and start killing background services and other non-extraneous 2680 * processes. 2681 */ 2682 public long threshold; 2683 2684 /** 2685 * Set to true if the system considers itself to currently be in a low 2686 * memory situation. 2687 */ 2688 public boolean lowMemory; 2689 2690 /** @hide */ 2691 public long hiddenAppThreshold; 2692 /** @hide */ 2693 public long secondaryServerThreshold; 2694 /** @hide */ 2695 public long visibleAppThreshold; 2696 /** @hide */ 2697 public long foregroundAppThreshold; 2698 2699 public MemoryInfo() { 2700 } 2701 2702 public int describeContents() { 2703 return 0; 2704 } 2705 2706 public void writeToParcel(Parcel dest, int flags) { 2707 dest.writeLong(availMem); 2708 dest.writeLong(totalMem); 2709 dest.writeLong(threshold); 2710 dest.writeInt(lowMemory ? 1 : 0); 2711 dest.writeLong(hiddenAppThreshold); 2712 dest.writeLong(secondaryServerThreshold); 2713 dest.writeLong(visibleAppThreshold); 2714 dest.writeLong(foregroundAppThreshold); 2715 } 2716 2717 public void readFromParcel(Parcel source) { 2718 availMem = source.readLong(); 2719 totalMem = source.readLong(); 2720 threshold = source.readLong(); 2721 lowMemory = source.readInt() != 0; 2722 hiddenAppThreshold = source.readLong(); 2723 secondaryServerThreshold = source.readLong(); 2724 visibleAppThreshold = source.readLong(); 2725 foregroundAppThreshold = source.readLong(); 2726 } 2727 2728 public static final Creator<MemoryInfo> CREATOR 2729 = new Creator<MemoryInfo>() { 2730 public MemoryInfo createFromParcel(Parcel source) { 2731 return new MemoryInfo(source); 2732 } 2733 public MemoryInfo[] newArray(int size) { 2734 return new MemoryInfo[size]; 2735 } 2736 }; 2737 2738 private MemoryInfo(Parcel source) { 2739 readFromParcel(source); 2740 } 2741 } 2742 2743 /** 2744 * Return general information about the memory state of the system. This 2745 * can be used to help decide how to manage your own memory, though note 2746 * that polling is not recommended and 2747 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2748 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2749 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2750 * level of your process as needed, which gives a better hint for how to 2751 * manage its memory. 2752 */ 2753 public void getMemoryInfo(MemoryInfo outInfo) { 2754 try { 2755 getService().getMemoryInfo(outInfo); 2756 } catch (RemoteException e) { 2757 throw e.rethrowFromSystemServer(); 2758 } 2759 } 2760 2761 /** 2762 * Information you can retrieve about an ActivityStack in the system. 2763 * @hide 2764 */ 2765 public static class StackInfo implements Parcelable { 2766 public int stackId; 2767 public Rect bounds = new Rect(); 2768 public int[] taskIds; 2769 public String[] taskNames; 2770 public Rect[] taskBounds; 2771 public int[] taskUserIds; 2772 public ComponentName topActivity; 2773 public int displayId; 2774 public int userId; 2775 public boolean visible; 2776 // Index of the stack in the display's stack list, can be used for comparison of stack order 2777 public int position; 2778 2779 @Override 2780 public int describeContents() { 2781 return 0; 2782 } 2783 2784 @Override 2785 public void writeToParcel(Parcel dest, int flags) { 2786 dest.writeInt(stackId); 2787 dest.writeInt(bounds.left); 2788 dest.writeInt(bounds.top); 2789 dest.writeInt(bounds.right); 2790 dest.writeInt(bounds.bottom); 2791 dest.writeIntArray(taskIds); 2792 dest.writeStringArray(taskNames); 2793 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2794 dest.writeInt(boundsCount); 2795 for (int i = 0; i < boundsCount; i++) { 2796 dest.writeInt(taskBounds[i].left); 2797 dest.writeInt(taskBounds[i].top); 2798 dest.writeInt(taskBounds[i].right); 2799 dest.writeInt(taskBounds[i].bottom); 2800 } 2801 dest.writeIntArray(taskUserIds); 2802 dest.writeInt(displayId); 2803 dest.writeInt(userId); 2804 dest.writeInt(visible ? 1 : 0); 2805 dest.writeInt(position); 2806 if (topActivity != null) { 2807 dest.writeInt(1); 2808 topActivity.writeToParcel(dest, 0); 2809 } else { 2810 dest.writeInt(0); 2811 } 2812 } 2813 2814 public void readFromParcel(Parcel source) { 2815 stackId = source.readInt(); 2816 bounds = new Rect( 2817 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2818 taskIds = source.createIntArray(); 2819 taskNames = source.createStringArray(); 2820 final int boundsCount = source.readInt(); 2821 if (boundsCount > 0) { 2822 taskBounds = new Rect[boundsCount]; 2823 for (int i = 0; i < boundsCount; i++) { 2824 taskBounds[i] = new Rect(); 2825 taskBounds[i].set( 2826 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2827 } 2828 } else { 2829 taskBounds = null; 2830 } 2831 taskUserIds = source.createIntArray(); 2832 displayId = source.readInt(); 2833 userId = source.readInt(); 2834 visible = source.readInt() > 0; 2835 position = source.readInt(); 2836 if (source.readInt() > 0) { 2837 topActivity = ComponentName.readFromParcel(source); 2838 } 2839 } 2840 2841 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2842 @Override 2843 public StackInfo createFromParcel(Parcel source) { 2844 return new StackInfo(source); 2845 } 2846 @Override 2847 public StackInfo[] newArray(int size) { 2848 return new StackInfo[size]; 2849 } 2850 }; 2851 2852 public StackInfo() { 2853 } 2854 2855 private StackInfo(Parcel source) { 2856 readFromParcel(source); 2857 } 2858 2859 public String toString(String prefix) { 2860 StringBuilder sb = new StringBuilder(256); 2861 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2862 sb.append(" bounds="); sb.append(bounds.toShortString()); 2863 sb.append(" displayId="); sb.append(displayId); 2864 sb.append(" userId="); sb.append(userId); 2865 sb.append("\n"); 2866 prefix = prefix + " "; 2867 for (int i = 0; i < taskIds.length; ++i) { 2868 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2869 sb.append(": "); sb.append(taskNames[i]); 2870 if (taskBounds != null) { 2871 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2872 } 2873 sb.append(" userId=").append(taskUserIds[i]); 2874 sb.append(" visible=").append(visible); 2875 if (topActivity != null) { 2876 sb.append(" topActivity=").append(topActivity); 2877 } 2878 sb.append("\n"); 2879 } 2880 return sb.toString(); 2881 } 2882 2883 @Override 2884 public String toString() { 2885 return toString(""); 2886 } 2887 } 2888 2889 /** 2890 * @hide 2891 */ 2892 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2893 try { 2894 return getService().clearApplicationUserData(packageName, 2895 observer, UserHandle.myUserId()); 2896 } catch (RemoteException e) { 2897 throw e.rethrowFromSystemServer(); 2898 } 2899 } 2900 2901 /** 2902 * Permits an application to erase its own data from disk. This is equivalent to 2903 * the user choosing to clear the app's data from within the device settings UI. It 2904 * erases all dynamic data associated with the app -- its private data and data in its 2905 * private area on external storage -- but does not remove the installed application 2906 * itself, nor any OBB files. 2907 * 2908 * @return {@code true} if the application successfully requested that the application's 2909 * data be erased; {@code false} otherwise. 2910 */ 2911 public boolean clearApplicationUserData() { 2912 return clearApplicationUserData(mContext.getPackageName(), null); 2913 } 2914 2915 2916 /** 2917 * Permits an application to get the persistent URI permissions granted to another. 2918 * 2919 * <p>Typically called by Settings. 2920 * 2921 * @param packageName application to look for the granted permissions 2922 * @return list of granted URI permissions 2923 * 2924 * @hide 2925 */ 2926 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2927 try { 2928 return getService().getGrantedUriPermissions(packageName, 2929 UserHandle.myUserId()); 2930 } catch (RemoteException e) { 2931 throw e.rethrowFromSystemServer(); 2932 } 2933 } 2934 2935 /** 2936 * Permits an application to clear the persistent URI permissions granted to another. 2937 * 2938 * <p>Typically called by Settings. 2939 * 2940 * @param packageName application to clear its granted permissions 2941 * 2942 * @hide 2943 */ 2944 public void clearGrantedUriPermissions(String packageName) { 2945 try { 2946 getService().clearGrantedUriPermissions(packageName, 2947 UserHandle.myUserId()); 2948 } catch (RemoteException e) { 2949 throw e.rethrowFromSystemServer(); 2950 } 2951 } 2952 2953 /** 2954 * Information you can retrieve about any processes that are in an error condition. 2955 */ 2956 public static class ProcessErrorStateInfo implements Parcelable { 2957 /** 2958 * Condition codes 2959 */ 2960 public static final int NO_ERROR = 0; 2961 public static final int CRASHED = 1; 2962 public static final int NOT_RESPONDING = 2; 2963 2964 /** 2965 * The condition that the process is in. 2966 */ 2967 public int condition; 2968 2969 /** 2970 * The process name in which the crash or error occurred. 2971 */ 2972 public String processName; 2973 2974 /** 2975 * The pid of this process; 0 if none 2976 */ 2977 public int pid; 2978 2979 /** 2980 * The kernel user-ID that has been assigned to this process; 2981 * currently this is not a unique ID (multiple applications can have 2982 * the same uid). 2983 */ 2984 public int uid; 2985 2986 /** 2987 * The activity name associated with the error, if known. May be null. 2988 */ 2989 public String tag; 2990 2991 /** 2992 * A short message describing the error condition. 2993 */ 2994 public String shortMsg; 2995 2996 /** 2997 * A long message describing the error condition. 2998 */ 2999 public String longMsg; 3000 3001 /** 3002 * The stack trace where the error originated. May be null. 3003 */ 3004 public String stackTrace; 3005 3006 /** 3007 * to be deprecated: This value will always be null. 3008 */ 3009 public byte[] crashData = null; 3010 3011 public ProcessErrorStateInfo() { 3012 } 3013 3014 @Override 3015 public int describeContents() { 3016 return 0; 3017 } 3018 3019 @Override 3020 public void writeToParcel(Parcel dest, int flags) { 3021 dest.writeInt(condition); 3022 dest.writeString(processName); 3023 dest.writeInt(pid); 3024 dest.writeInt(uid); 3025 dest.writeString(tag); 3026 dest.writeString(shortMsg); 3027 dest.writeString(longMsg); 3028 dest.writeString(stackTrace); 3029 } 3030 3031 public void readFromParcel(Parcel source) { 3032 condition = source.readInt(); 3033 processName = source.readString(); 3034 pid = source.readInt(); 3035 uid = source.readInt(); 3036 tag = source.readString(); 3037 shortMsg = source.readString(); 3038 longMsg = source.readString(); 3039 stackTrace = source.readString(); 3040 } 3041 3042 public static final Creator<ProcessErrorStateInfo> CREATOR = 3043 new Creator<ProcessErrorStateInfo>() { 3044 public ProcessErrorStateInfo createFromParcel(Parcel source) { 3045 return new ProcessErrorStateInfo(source); 3046 } 3047 public ProcessErrorStateInfo[] newArray(int size) { 3048 return new ProcessErrorStateInfo[size]; 3049 } 3050 }; 3051 3052 private ProcessErrorStateInfo(Parcel source) { 3053 readFromParcel(source); 3054 } 3055 } 3056 3057 /** 3058 * Returns a list of any processes that are currently in an error condition. The result 3059 * will be null if all processes are running properly at this time. 3060 * 3061 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 3062 * current error conditions (it will not return an empty list). This list ordering is not 3063 * specified. 3064 */ 3065 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 3066 try { 3067 return getService().getProcessesInErrorState(); 3068 } catch (RemoteException e) { 3069 throw e.rethrowFromSystemServer(); 3070 } 3071 } 3072 3073 /** 3074 * Information you can retrieve about a running process. 3075 */ 3076 public static class RunningAppProcessInfo implements Parcelable { 3077 /** 3078 * The name of the process that this object is associated with 3079 */ 3080 public String processName; 3081 3082 /** 3083 * The pid of this process; 0 if none 3084 */ 3085 public int pid; 3086 3087 /** 3088 * The user id of this process. 3089 */ 3090 public int uid; 3091 3092 /** 3093 * All packages that have been loaded into the process. 3094 */ 3095 public String pkgList[]; 3096 3097 /** 3098 * Constant for {@link #flags}: this is an app that is unable to 3099 * correctly save its state when going to the background, 3100 * so it can not be killed while in the background. 3101 * @hide 3102 */ 3103 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 3104 3105 /** 3106 * Constant for {@link #flags}: this process is associated with a 3107 * persistent system app. 3108 * @hide 3109 */ 3110 public static final int FLAG_PERSISTENT = 1<<1; 3111 3112 /** 3113 * Constant for {@link #flags}: this process is associated with a 3114 * persistent system app. 3115 * @hide 3116 */ 3117 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 3118 3119 /** 3120 * Flags of information. May be any of 3121 * {@link #FLAG_CANT_SAVE_STATE}. 3122 * @hide 3123 */ 3124 public int flags; 3125 3126 /** 3127 * Last memory trim level reported to the process: corresponds to 3128 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 3129 * ComponentCallbacks2.onTrimMemory(int)}. 3130 */ 3131 public int lastTrimLevel; 3132 3133 /** @hide */ 3134 @IntDef(prefix = { "IMPORTANCE_" }, value = { 3135 IMPORTANCE_FOREGROUND, 3136 IMPORTANCE_FOREGROUND_SERVICE, 3137 IMPORTANCE_TOP_SLEEPING, 3138 IMPORTANCE_VISIBLE, 3139 IMPORTANCE_PERCEPTIBLE, 3140 IMPORTANCE_CANT_SAVE_STATE, 3141 IMPORTANCE_SERVICE, 3142 IMPORTANCE_CACHED, 3143 IMPORTANCE_GONE, 3144 }) 3145 @Retention(RetentionPolicy.SOURCE) 3146 public @interface Importance {} 3147 3148 /** 3149 * Constant for {@link #importance}: This process is running the 3150 * foreground UI; that is, it is the thing currently at the top of the screen 3151 * that the user is interacting with. 3152 */ 3153 public static final int IMPORTANCE_FOREGROUND = 100; 3154 3155 /** 3156 * Constant for {@link #importance}: This process is running a foreground 3157 * service, for example to perform music playback even while the user is 3158 * not immediately in the app. This generally indicates that the process 3159 * is doing something the user actively cares about. 3160 */ 3161 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3162 3163 /** 3164 * Constant for {@link #importance}: This process is running the foreground 3165 * UI, but the device is asleep so it is not visible to the user. This means 3166 * the user is not really aware of the process, because they can not see or 3167 * interact with it, but it is quite important because it what they expect to 3168 * return to once unlocking the device. 3169 */ 3170 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3171 3172 /** 3173 * Constant for {@link #importance}: This process is running something 3174 * that is actively visible to the user, though not in the immediate 3175 * foreground. This may be running a window that is behind the current 3176 * foreground (so paused and with its state saved, not interacting with 3177 * the user, but visible to them to some degree); it may also be running 3178 * other services under the system's control that it inconsiders important. 3179 */ 3180 public static final int IMPORTANCE_VISIBLE = 200; 3181 3182 /** 3183 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 3184 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3185 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 3186 * 3187 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 3188 * on Android versions below {@link Build.VERSION_CODES#O}. 3189 * 3190 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 3191 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3192 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3193 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 3194 */ 3195 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 3196 3197 /** 3198 * Constant for {@link #importance}: This process is not something the user 3199 * is directly aware of, but is otherwise perceptible to them to some degree. 3200 */ 3201 public static final int IMPORTANCE_PERCEPTIBLE = 230; 3202 3203 /** 3204 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 3205 * this wrong value 3206 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3207 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 3208 * 3209 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 3210 * on Android versions below {@link Build.VERSION_CODES#O}. 3211 * 3212 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 3213 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3214 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3215 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 3216 * 3217 * @hide 3218 */ 3219 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 3220 3221 /** 3222 * Constant for {@link #importance}: This process is running an 3223 * application that can not save its state, and thus can't be killed 3224 * while in the background. 3225 * @hide 3226 */ 3227 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 3228 3229 /** 3230 * Constant for {@link #importance}: This process is contains services 3231 * that should remain running. These are background services apps have 3232 * started, not something the user is aware of, so they may be killed by 3233 * the system relatively freely (though it is generally desired that they 3234 * stay running as long as they want to). 3235 */ 3236 public static final int IMPORTANCE_SERVICE = 300; 3237 3238 /** 3239 * Constant for {@link #importance}: This process process contains 3240 * cached code that is expendable, not actively running any app components 3241 * we care about. 3242 */ 3243 public static final int IMPORTANCE_CACHED = 400; 3244 3245 /** 3246 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3247 */ 3248 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3249 3250 /** 3251 * Constant for {@link #importance}: This process is empty of any 3252 * actively running code. 3253 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3254 */ 3255 @Deprecated 3256 public static final int IMPORTANCE_EMPTY = 500; 3257 3258 /** 3259 * Constant for {@link #importance}: This process does not exist. 3260 */ 3261 public static final int IMPORTANCE_GONE = 1000; 3262 3263 /** 3264 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 3265 * will be passed to a client, use {@link #procStateToImportanceForClient}. 3266 * @hide 3267 */ 3268 public static @Importance int procStateToImportance(int procState) { 3269 if (procState == PROCESS_STATE_NONEXISTENT) { 3270 return IMPORTANCE_GONE; 3271 } else if (procState >= PROCESS_STATE_HOME) { 3272 return IMPORTANCE_CACHED; 3273 } else if (procState >= PROCESS_STATE_SERVICE) { 3274 return IMPORTANCE_SERVICE; 3275 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3276 return IMPORTANCE_CANT_SAVE_STATE; 3277 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 3278 return IMPORTANCE_PERCEPTIBLE; 3279 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3280 return IMPORTANCE_VISIBLE; 3281 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3282 return IMPORTANCE_TOP_SLEEPING; 3283 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3284 return IMPORTANCE_FOREGROUND_SERVICE; 3285 } else { 3286 return IMPORTANCE_FOREGROUND; 3287 } 3288 } 3289 3290 /** 3291 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 3292 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 3293 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 3294 * client's target SDK < {@link VERSION_CODES#O}. 3295 * @hide 3296 */ 3297 public static @Importance int procStateToImportanceForClient(int procState, 3298 Context clientContext) { 3299 return procStateToImportanceForTargetSdk(procState, 3300 clientContext.getApplicationInfo().targetSdkVersion); 3301 } 3302 3303 /** 3304 * See {@link #procStateToImportanceForClient}. 3305 * @hide 3306 */ 3307 public static @Importance int procStateToImportanceForTargetSdk(int procState, 3308 int targetSdkVersion) { 3309 final int importance = procStateToImportance(procState); 3310 3311 // For pre O apps, convert to the old, wrong values. 3312 if (targetSdkVersion < VERSION_CODES.O) { 3313 switch (importance) { 3314 case IMPORTANCE_PERCEPTIBLE: 3315 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3316 case IMPORTANCE_CANT_SAVE_STATE: 3317 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3318 } 3319 } 3320 return importance; 3321 } 3322 3323 /** @hide */ 3324 public static int importanceToProcState(@Importance int importance) { 3325 if (importance == IMPORTANCE_GONE) { 3326 return PROCESS_STATE_NONEXISTENT; 3327 } else if (importance >= IMPORTANCE_CACHED) { 3328 return PROCESS_STATE_HOME; 3329 } else if (importance >= IMPORTANCE_SERVICE) { 3330 return PROCESS_STATE_SERVICE; 3331 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3332 return PROCESS_STATE_HEAVY_WEIGHT; 3333 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3334 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3335 } else if (importance >= IMPORTANCE_VISIBLE) { 3336 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3337 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3338 return PROCESS_STATE_TOP_SLEEPING; 3339 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3340 return PROCESS_STATE_FOREGROUND_SERVICE; 3341 } else { 3342 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3343 } 3344 } 3345 3346 /** 3347 * The relative importance level that the system places on this process. 3348 * These constants are numbered so that "more important" values are 3349 * always smaller than "less important" values. 3350 */ 3351 public @Importance int importance; 3352 3353 /** 3354 * An additional ordering within a particular {@link #importance} 3355 * category, providing finer-grained information about the relative 3356 * utility of processes within a category. This number means nothing 3357 * except that a smaller values are more recently used (and thus 3358 * more important). Currently an LRU value is only maintained for 3359 * the {@link #IMPORTANCE_CACHED} category, though others may 3360 * be maintained in the future. 3361 */ 3362 public int lru; 3363 3364 /** 3365 * Constant for {@link #importanceReasonCode}: nothing special has 3366 * been specified for the reason for this level. 3367 */ 3368 public static final int REASON_UNKNOWN = 0; 3369 3370 /** 3371 * Constant for {@link #importanceReasonCode}: one of the application's 3372 * content providers is being used by another process. The pid of 3373 * the client process is in {@link #importanceReasonPid} and the 3374 * target provider in this process is in 3375 * {@link #importanceReasonComponent}. 3376 */ 3377 public static final int REASON_PROVIDER_IN_USE = 1; 3378 3379 /** 3380 * Constant for {@link #importanceReasonCode}: one of the application's 3381 * content providers is being used by another process. The pid of 3382 * the client process is in {@link #importanceReasonPid} and the 3383 * target provider in this process is in 3384 * {@link #importanceReasonComponent}. 3385 */ 3386 public static final int REASON_SERVICE_IN_USE = 2; 3387 3388 /** 3389 * The reason for {@link #importance}, if any. 3390 */ 3391 public int importanceReasonCode; 3392 3393 /** 3394 * For the specified values of {@link #importanceReasonCode}, this 3395 * is the process ID of the other process that is a client of this 3396 * process. This will be 0 if no other process is using this one. 3397 */ 3398 public int importanceReasonPid; 3399 3400 /** 3401 * For the specified values of {@link #importanceReasonCode}, this 3402 * is the name of the component that is being used in this process. 3403 */ 3404 public ComponentName importanceReasonComponent; 3405 3406 /** 3407 * When {@link #importanceReasonPid} is non-0, this is the importance 3408 * of the other pid. @hide 3409 */ 3410 public int importanceReasonImportance; 3411 3412 /** 3413 * Current process state, as per PROCESS_STATE_* constants. 3414 * @hide 3415 */ 3416 public int processState; 3417 3418 public RunningAppProcessInfo() { 3419 importance = IMPORTANCE_FOREGROUND; 3420 importanceReasonCode = REASON_UNKNOWN; 3421 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3422 } 3423 3424 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3425 processName = pProcessName; 3426 pid = pPid; 3427 pkgList = pArr; 3428 } 3429 3430 public int describeContents() { 3431 return 0; 3432 } 3433 3434 public void writeToParcel(Parcel dest, int flags) { 3435 dest.writeString(processName); 3436 dest.writeInt(pid); 3437 dest.writeInt(uid); 3438 dest.writeStringArray(pkgList); 3439 dest.writeInt(this.flags); 3440 dest.writeInt(lastTrimLevel); 3441 dest.writeInt(importance); 3442 dest.writeInt(lru); 3443 dest.writeInt(importanceReasonCode); 3444 dest.writeInt(importanceReasonPid); 3445 ComponentName.writeToParcel(importanceReasonComponent, dest); 3446 dest.writeInt(importanceReasonImportance); 3447 dest.writeInt(processState); 3448 } 3449 3450 public void readFromParcel(Parcel source) { 3451 processName = source.readString(); 3452 pid = source.readInt(); 3453 uid = source.readInt(); 3454 pkgList = source.readStringArray(); 3455 flags = source.readInt(); 3456 lastTrimLevel = source.readInt(); 3457 importance = source.readInt(); 3458 lru = source.readInt(); 3459 importanceReasonCode = source.readInt(); 3460 importanceReasonPid = source.readInt(); 3461 importanceReasonComponent = ComponentName.readFromParcel(source); 3462 importanceReasonImportance = source.readInt(); 3463 processState = source.readInt(); 3464 } 3465 3466 public static final Creator<RunningAppProcessInfo> CREATOR = 3467 new Creator<RunningAppProcessInfo>() { 3468 public RunningAppProcessInfo createFromParcel(Parcel source) { 3469 return new RunningAppProcessInfo(source); 3470 } 3471 public RunningAppProcessInfo[] newArray(int size) { 3472 return new RunningAppProcessInfo[size]; 3473 } 3474 }; 3475 3476 private RunningAppProcessInfo(Parcel source) { 3477 readFromParcel(source); 3478 } 3479 } 3480 3481 /** 3482 * Returns a list of application processes installed on external media 3483 * that are running on the device. 3484 * 3485 * <p><b>Note: this method is only intended for debugging or building 3486 * a user-facing process management UI.</b></p> 3487 * 3488 * @return Returns a list of ApplicationInfo records, or null if none 3489 * This list ordering is not specified. 3490 * @hide 3491 */ 3492 public List<ApplicationInfo> getRunningExternalApplications() { 3493 try { 3494 return getService().getRunningExternalApplications(); 3495 } catch (RemoteException e) { 3496 throw e.rethrowFromSystemServer(); 3497 } 3498 } 3499 3500 /** 3501 * Sets the memory trim mode for a process and schedules a memory trim operation. 3502 * 3503 * <p><b>Note: this method is only intended for testing framework.</b></p> 3504 * 3505 * @return Returns true if successful. 3506 * @hide 3507 */ 3508 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3509 try { 3510 return getService().setProcessMemoryTrimLevel(process, userId, 3511 level); 3512 } catch (RemoteException e) { 3513 throw e.rethrowFromSystemServer(); 3514 } 3515 } 3516 3517 /** 3518 * Returns a list of application processes that are running on the device. 3519 * 3520 * <p><b>Note: this method is only intended for debugging or building 3521 * a user-facing process management UI.</b></p> 3522 * 3523 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3524 * running processes (it will not return an empty list). This list ordering is not 3525 * specified. 3526 */ 3527 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3528 try { 3529 return getService().getRunningAppProcesses(); 3530 } catch (RemoteException e) { 3531 throw e.rethrowFromSystemServer(); 3532 } 3533 } 3534 3535 /** 3536 * Return the importance of a given package name, based on the processes that are 3537 * currently running. The return value is one of the importance constants defined 3538 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3539 * processes that this package has code running inside of. If there are no processes 3540 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3541 * @hide 3542 */ 3543 @SystemApi @TestApi 3544 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3545 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3546 try { 3547 int procState = getService().getPackageProcessState(packageName, 3548 mContext.getOpPackageName()); 3549 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3550 } catch (RemoteException e) { 3551 throw e.rethrowFromSystemServer(); 3552 } 3553 } 3554 3555 /** 3556 * Return the importance of a given uid, based on the processes that are 3557 * currently running. The return value is one of the importance constants defined 3558 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3559 * processes that this uid has running. If there are no processes 3560 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3561 * @hide 3562 */ 3563 @SystemApi @TestApi 3564 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3565 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3566 try { 3567 int procState = getService().getUidProcessState(uid, 3568 mContext.getOpPackageName()); 3569 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3570 } catch (RemoteException e) { 3571 throw e.rethrowFromSystemServer(); 3572 } 3573 } 3574 3575 /** 3576 * Callback to get reports about changes to the importance of a uid. Use with 3577 * {@link #addOnUidImportanceListener}. 3578 * @hide 3579 */ 3580 @SystemApi @TestApi 3581 public interface OnUidImportanceListener { 3582 /** 3583 * The importance if a given uid has changed. Will be one of the importance 3584 * values in {@link RunningAppProcessInfo}; 3585 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3586 * when the uid is no longer running at all. This callback will happen on a thread 3587 * from a thread pool, not the main UI thread. 3588 * @param uid The uid whose importance has changed. 3589 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3590 */ 3591 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3592 } 3593 3594 /** 3595 * Start monitoring changes to the imoportance of uids running in the system. 3596 * @param listener The listener callback that will receive change reports. 3597 * @param importanceCutpoint The level of importance in which the caller is interested 3598 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3599 * is used here, you will receive a call each time a uids importance transitions between 3600 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3601 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3602 * 3603 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3604 * permission to use this feature.</p> 3605 * 3606 * @throws IllegalArgumentException If the listener is already registered. 3607 * @throws SecurityException If the caller does not hold 3608 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3609 * @hide 3610 */ 3611 @SystemApi @TestApi 3612 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3613 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3614 synchronized (this) { 3615 if (mImportanceListeners.containsKey(listener)) { 3616 throw new IllegalArgumentException("Listener already registered: " + listener); 3617 } 3618 // TODO: implement the cut point in the system process to avoid IPCs. 3619 UidObserver observer = new UidObserver(listener, mContext); 3620 try { 3621 getService().registerUidObserver(observer, 3622 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3623 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3624 mContext.getOpPackageName()); 3625 } catch (RemoteException e) { 3626 throw e.rethrowFromSystemServer(); 3627 } 3628 mImportanceListeners.put(listener, observer); 3629 } 3630 } 3631 3632 /** 3633 * Remove an importance listener that was previously registered with 3634 * {@link #addOnUidImportanceListener}. 3635 * 3636 * @throws IllegalArgumentException If the listener is not registered. 3637 * @hide 3638 */ 3639 @SystemApi @TestApi 3640 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3641 synchronized (this) { 3642 UidObserver observer = mImportanceListeners.remove(listener); 3643 if (observer == null) { 3644 throw new IllegalArgumentException("Listener not registered: " + listener); 3645 } 3646 try { 3647 getService().unregisterUidObserver(observer); 3648 } catch (RemoteException e) { 3649 throw e.rethrowFromSystemServer(); 3650 } 3651 } 3652 } 3653 3654 /** 3655 * Return global memory state information for the calling process. This 3656 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3657 * only fields that will be filled in are 3658 * {@link RunningAppProcessInfo#pid}, 3659 * {@link RunningAppProcessInfo#uid}, 3660 * {@link RunningAppProcessInfo#lastTrimLevel}, 3661 * {@link RunningAppProcessInfo#importance}, 3662 * {@link RunningAppProcessInfo#lru}, and 3663 * {@link RunningAppProcessInfo#importanceReasonCode}. 3664 */ 3665 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3666 try { 3667 getService().getMyMemoryState(outState); 3668 } catch (RemoteException e) { 3669 throw e.rethrowFromSystemServer(); 3670 } 3671 } 3672 3673 /** 3674 * Return information about the memory usage of one or more processes. 3675 * 3676 * <p><b>Note: this method is only intended for debugging or building 3677 * a user-facing process management UI.</b></p> 3678 * 3679 * @param pids The pids of the processes whose memory usage is to be 3680 * retrieved. 3681 * @return Returns an array of memory information, one for each 3682 * requested pid. 3683 */ 3684 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3685 try { 3686 return getService().getProcessMemoryInfo(pids); 3687 } catch (RemoteException e) { 3688 throw e.rethrowFromSystemServer(); 3689 } 3690 } 3691 3692 /** 3693 * @deprecated This is now just a wrapper for 3694 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3695 * is no longer available to applications because it allows them to 3696 * break other applications by removing their alarms, stopping their 3697 * services, etc. 3698 */ 3699 @Deprecated 3700 public void restartPackage(String packageName) { 3701 killBackgroundProcesses(packageName); 3702 } 3703 3704 /** 3705 * Have the system immediately kill all background processes associated 3706 * with the given package. This is the same as the kernel killing those 3707 * processes to reclaim memory; the system will take care of restarting 3708 * these processes in the future as needed. 3709 * 3710 * @param packageName The name of the package whose processes are to 3711 * be killed. 3712 */ 3713 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3714 public void killBackgroundProcesses(String packageName) { 3715 try { 3716 getService().killBackgroundProcesses(packageName, 3717 UserHandle.myUserId()); 3718 } catch (RemoteException e) { 3719 throw e.rethrowFromSystemServer(); 3720 } 3721 } 3722 3723 /** 3724 * Kills the specified UID. 3725 * @param uid The UID to kill. 3726 * @param reason The reason for the kill. 3727 * 3728 * @hide 3729 */ 3730 @SystemApi 3731 @RequiresPermission(Manifest.permission.KILL_UID) 3732 public void killUid(int uid, String reason) { 3733 try { 3734 getService().killUid(UserHandle.getAppId(uid), 3735 UserHandle.getUserId(uid), reason); 3736 } catch (RemoteException e) { 3737 throw e.rethrowFromSystemServer(); 3738 } 3739 } 3740 3741 /** 3742 * Have the system perform a force stop of everything associated with 3743 * the given application package. All processes that share its uid 3744 * will be killed, all services it has running stopped, all activities 3745 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3746 * broadcast will be sent, so that any of its registered alarms can 3747 * be stopped, notifications removed, etc. 3748 * 3749 * <p>You must hold the permission 3750 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3751 * call this method. 3752 * 3753 * @param packageName The name of the package to be stopped. 3754 * @param userId The user for which the running package is to be stopped. 3755 * 3756 * @hide This is not available to third party applications due to 3757 * it allowing them to break other applications by stopping their 3758 * services, removing their alarms, etc. 3759 */ 3760 public void forceStopPackageAsUser(String packageName, int userId) { 3761 try { 3762 getService().forceStopPackage(packageName, userId); 3763 } catch (RemoteException e) { 3764 throw e.rethrowFromSystemServer(); 3765 } 3766 } 3767 3768 /** 3769 * @see #forceStopPackageAsUser(String, int) 3770 * @hide 3771 */ 3772 @SystemApi 3773 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3774 public void forceStopPackage(String packageName) { 3775 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3776 } 3777 3778 /** 3779 * Get the device configuration attributes. 3780 */ 3781 public ConfigurationInfo getDeviceConfigurationInfo() { 3782 try { 3783 return getService().getDeviceConfigurationInfo(); 3784 } catch (RemoteException e) { 3785 throw e.rethrowFromSystemServer(); 3786 } 3787 } 3788 3789 /** 3790 * Get the preferred density of icons for the launcher. This is used when 3791 * custom drawables are created (e.g., for shortcuts). 3792 * 3793 * @return density in terms of DPI 3794 */ 3795 public int getLauncherLargeIconDensity() { 3796 final Resources res = mContext.getResources(); 3797 final int density = res.getDisplayMetrics().densityDpi; 3798 final int sw = res.getConfiguration().smallestScreenWidthDp; 3799 3800 if (sw < 600) { 3801 // Smaller than approx 7" tablets, use the regular icon size. 3802 return density; 3803 } 3804 3805 switch (density) { 3806 case DisplayMetrics.DENSITY_LOW: 3807 return DisplayMetrics.DENSITY_MEDIUM; 3808 case DisplayMetrics.DENSITY_MEDIUM: 3809 return DisplayMetrics.DENSITY_HIGH; 3810 case DisplayMetrics.DENSITY_TV: 3811 return DisplayMetrics.DENSITY_XHIGH; 3812 case DisplayMetrics.DENSITY_HIGH: 3813 return DisplayMetrics.DENSITY_XHIGH; 3814 case DisplayMetrics.DENSITY_XHIGH: 3815 return DisplayMetrics.DENSITY_XXHIGH; 3816 case DisplayMetrics.DENSITY_XXHIGH: 3817 return DisplayMetrics.DENSITY_XHIGH * 2; 3818 default: 3819 // The density is some abnormal value. Return some other 3820 // abnormal value that is a reasonable scaling of it. 3821 return (int)((density*1.5f)+.5f); 3822 } 3823 } 3824 3825 /** 3826 * Get the preferred launcher icon size. This is used when custom drawables 3827 * are created (e.g., for shortcuts). 3828 * 3829 * @return dimensions of square icons in terms of pixels 3830 */ 3831 public int getLauncherLargeIconSize() { 3832 return getLauncherLargeIconSizeInner(mContext); 3833 } 3834 3835 static int getLauncherLargeIconSizeInner(Context context) { 3836 final Resources res = context.getResources(); 3837 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3838 final int sw = res.getConfiguration().smallestScreenWidthDp; 3839 3840 if (sw < 600) { 3841 // Smaller than approx 7" tablets, use the regular icon size. 3842 return size; 3843 } 3844 3845 final int density = res.getDisplayMetrics().densityDpi; 3846 3847 switch (density) { 3848 case DisplayMetrics.DENSITY_LOW: 3849 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3850 case DisplayMetrics.DENSITY_MEDIUM: 3851 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3852 case DisplayMetrics.DENSITY_TV: 3853 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3854 case DisplayMetrics.DENSITY_HIGH: 3855 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3856 case DisplayMetrics.DENSITY_XHIGH: 3857 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3858 case DisplayMetrics.DENSITY_XXHIGH: 3859 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3860 default: 3861 // The density is some abnormal value. Return some other 3862 // abnormal value that is a reasonable scaling of it. 3863 return (int)((size*1.5f) + .5f); 3864 } 3865 } 3866 3867 /** 3868 * Returns "true" if the user interface is currently being messed with 3869 * by a monkey. 3870 */ 3871 public static boolean isUserAMonkey() { 3872 try { 3873 return getService().isUserAMonkey(); 3874 } catch (RemoteException e) { 3875 throw e.rethrowFromSystemServer(); 3876 } 3877 } 3878 3879 /** 3880 * Returns "true" if device is running in a test harness. 3881 */ 3882 public static boolean isRunningInTestHarness() { 3883 return SystemProperties.getBoolean("ro.test_harness", false); 3884 } 3885 3886 /** 3887 * Returns the launch count of each installed package. 3888 * 3889 * @hide 3890 */ 3891 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3892 try { 3893 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3894 ServiceManager.getService("usagestats")); 3895 if (usageStatsService == null) { 3896 return new HashMap<String, Integer>(); 3897 } 3898 3899 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3900 ActivityThread.currentPackageName()); 3901 if (allPkgUsageStats == null) { 3902 return new HashMap<String, Integer>(); 3903 } 3904 3905 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3906 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3907 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3908 } 3909 3910 return launchCounts; 3911 } catch (RemoteException e) { 3912 Log.w(TAG, "Could not query launch counts", e); 3913 return new HashMap<String, Integer>(); 3914 } 3915 }*/ 3916 3917 /** @hide */ 3918 public static int checkComponentPermission(String permission, int uid, 3919 int owningUid, boolean exported) { 3920 // Root, system server get to do everything. 3921 final int appId = UserHandle.getAppId(uid); 3922 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3923 return PackageManager.PERMISSION_GRANTED; 3924 } 3925 // Isolated processes don't get any permissions. 3926 if (UserHandle.isIsolated(uid)) { 3927 return PackageManager.PERMISSION_DENIED; 3928 } 3929 // If there is a uid that owns whatever is being accessed, it has 3930 // blanket access to it regardless of the permissions it requires. 3931 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3932 return PackageManager.PERMISSION_GRANTED; 3933 } 3934 // If the target is not exported, then nobody else can get to it. 3935 if (!exported) { 3936 /* 3937 RuntimeException here = new RuntimeException("here"); 3938 here.fillInStackTrace(); 3939 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3940 here); 3941 */ 3942 return PackageManager.PERMISSION_DENIED; 3943 } 3944 if (permission == null) { 3945 return PackageManager.PERMISSION_GRANTED; 3946 } 3947 try { 3948 return AppGlobals.getPackageManager() 3949 .checkUidPermission(permission, uid); 3950 } catch (RemoteException e) { 3951 throw e.rethrowFromSystemServer(); 3952 } 3953 } 3954 3955 /** @hide */ 3956 public static int checkUidPermission(String permission, int uid) { 3957 try { 3958 return AppGlobals.getPackageManager() 3959 .checkUidPermission(permission, uid); 3960 } catch (RemoteException e) { 3961 throw e.rethrowFromSystemServer(); 3962 } 3963 } 3964 3965 /** 3966 * @hide 3967 * Helper for dealing with incoming user arguments to system service calls. 3968 * Takes care of checking permissions and converting USER_CURRENT to the 3969 * actual current user. 3970 * 3971 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3972 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3973 * @param userId The user id argument supplied by the caller -- this is the user 3974 * they want to run as. 3975 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3976 * to get a USER_ALL returned and deal with it correctly. If false, 3977 * an exception will be thrown if USER_ALL is supplied. 3978 * @param requireFull If true, the caller must hold 3979 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3980 * different user than their current process; otherwise they must hold 3981 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3982 * @param name Optional textual name of the incoming call; only for generating error messages. 3983 * @param callerPackage Optional package name of caller; only for error messages. 3984 * 3985 * @return Returns the user ID that the call should run as. Will always be a concrete 3986 * user number, unless <var>allowAll</var> is true in which case it could also be 3987 * USER_ALL. 3988 */ 3989 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3990 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3991 if (UserHandle.getUserId(callingUid) == userId) { 3992 return userId; 3993 } 3994 try { 3995 return getService().handleIncomingUser(callingPid, 3996 callingUid, userId, allowAll, requireFull, name, callerPackage); 3997 } catch (RemoteException e) { 3998 throw e.rethrowFromSystemServer(); 3999 } 4000 } 4001 4002 /** 4003 * Gets the userId of the current foreground user. Requires system permissions. 4004 * @hide 4005 */ 4006 @SystemApi 4007 public static int getCurrentUser() { 4008 UserInfo ui; 4009 try { 4010 ui = getService().getCurrentUser(); 4011 return ui != null ? ui.id : 0; 4012 } catch (RemoteException e) { 4013 throw e.rethrowFromSystemServer(); 4014 } 4015 } 4016 4017 /** 4018 * @param userid the user's id. Zero indicates the default user. 4019 * @hide 4020 */ 4021 public boolean switchUser(int userid) { 4022 try { 4023 return getService().switchUser(userid); 4024 } catch (RemoteException e) { 4025 throw e.rethrowFromSystemServer(); 4026 } 4027 } 4028 4029 /** 4030 * Logs out current current foreground user by switching to the system user and stopping the 4031 * user being switched from. 4032 * @hide 4033 */ 4034 public static void logoutCurrentUser() { 4035 int currentUser = ActivityManager.getCurrentUser(); 4036 if (currentUser != UserHandle.USER_SYSTEM) { 4037 try { 4038 getService().switchUser(UserHandle.USER_SYSTEM); 4039 getService().stopUser(currentUser, /* force= */ false, null); 4040 } catch (RemoteException e) { 4041 e.rethrowFromSystemServer(); 4042 } 4043 } 4044 } 4045 4046 /** {@hide} */ 4047 public static final int FLAG_OR_STOPPED = 1 << 0; 4048 /** {@hide} */ 4049 public static final int FLAG_AND_LOCKED = 1 << 1; 4050 /** {@hide} */ 4051 public static final int FLAG_AND_UNLOCKED = 1 << 2; 4052 /** {@hide} */ 4053 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 4054 4055 /** 4056 * Return whether the given user is actively running. This means that 4057 * the user is in the "started" state, not "stopped" -- it is currently 4058 * allowed to run code through scheduled alarms, receiving broadcasts, 4059 * etc. A started user may be either the current foreground user or a 4060 * background user; the result here does not distinguish between the two. 4061 * @param userId the user's id. Zero indicates the default user. 4062 * @hide 4063 */ 4064 public boolean isUserRunning(int userId) { 4065 try { 4066 return getService().isUserRunning(userId, 0); 4067 } catch (RemoteException e) { 4068 throw e.rethrowFromSystemServer(); 4069 } 4070 } 4071 4072 /** {@hide} */ 4073 public boolean isVrModePackageEnabled(ComponentName component) { 4074 try { 4075 return getService().isVrModePackageEnabled(component); 4076 } catch (RemoteException e) { 4077 throw e.rethrowFromSystemServer(); 4078 } 4079 } 4080 4081 /** 4082 * Perform a system dump of various state associated with the given application 4083 * package name. This call blocks while the dump is being performed, so should 4084 * not be done on a UI thread. The data will be written to the given file 4085 * descriptor as text. 4086 * @param fd The file descriptor that the dump should be written to. The file 4087 * descriptor is <em>not</em> closed by this function; the caller continues to 4088 * own it. 4089 * @param packageName The name of the package that is to be dumped. 4090 */ 4091 @RequiresPermission(Manifest.permission.DUMP) 4092 public void dumpPackageState(FileDescriptor fd, String packageName) { 4093 dumpPackageStateStatic(fd, packageName); 4094 } 4095 4096 /** 4097 * @hide 4098 */ 4099 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 4100 FileOutputStream fout = new FileOutputStream(fd); 4101 PrintWriter pw = new FastPrintWriter(fout); 4102 dumpService(pw, fd, "package", new String[] { packageName }); 4103 pw.println(); 4104 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 4105 "-a", "package", packageName }); 4106 pw.println(); 4107 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 4108 pw.println(); 4109 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 4110 pw.println(); 4111 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 4112 pw.println(); 4113 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 4114 pw.flush(); 4115 } 4116 4117 /** 4118 * @hide 4119 */ 4120 public static boolean isSystemReady() { 4121 if (!sSystemReady) { 4122 if (ActivityThread.isSystem()) { 4123 sSystemReady = 4124 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 4125 } else { 4126 // Since this is being called from outside system server, system should be 4127 // ready by now. 4128 sSystemReady = true; 4129 } 4130 } 4131 return sSystemReady; 4132 } 4133 4134 /** 4135 * @hide 4136 */ 4137 public static void broadcastStickyIntent(Intent intent, int userId) { 4138 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 4139 } 4140 4141 /** 4142 * Convenience for sending a sticky broadcast. For internal use only. 4143 * 4144 * @hide 4145 */ 4146 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 4147 try { 4148 getService().broadcastIntent( 4149 null, intent, null, null, Activity.RESULT_OK, null, null, 4150 null /*permission*/, appOp, null, false, true, userId); 4151 } catch (RemoteException ex) { 4152 } 4153 } 4154 4155 /** 4156 * @hide 4157 */ 4158 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 4159 String tag) { 4160 try { 4161 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 4162 sourceUid, sourcePkg, tag); 4163 } catch (RemoteException ex) { 4164 } 4165 } 4166 4167 /** 4168 * @hide 4169 */ 4170 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 4171 try { 4172 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4173 } catch (RemoteException ex) { 4174 } 4175 } 4176 4177 /** 4178 * @hide 4179 */ 4180 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 4181 try { 4182 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4183 } catch (RemoteException ex) { 4184 } 4185 } 4186 4187 /** 4188 * @hide 4189 */ 4190 public static IActivityManager getService() { 4191 return IActivityManagerSingleton.get(); 4192 } 4193 4194 private static final Singleton<IActivityManager> IActivityManagerSingleton = 4195 new Singleton<IActivityManager>() { 4196 @Override 4197 protected IActivityManager create() { 4198 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 4199 final IActivityManager am = IActivityManager.Stub.asInterface(b); 4200 return am; 4201 } 4202 }; 4203 4204 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 4205 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 4206 IBinder service = ServiceManager.checkService(name); 4207 if (service == null) { 4208 pw.println(" (Service not found)"); 4209 return; 4210 } 4211 TransferPipe tp = null; 4212 try { 4213 pw.flush(); 4214 tp = new TransferPipe(); 4215 tp.setBufferPrefix(" "); 4216 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 4217 tp.go(fd, 10000); 4218 } catch (Throwable e) { 4219 if (tp != null) { 4220 tp.kill(); 4221 } 4222 pw.println("Failure dumping service:"); 4223 e.printStackTrace(pw); 4224 } 4225 } 4226 4227 /** 4228 * Request that the system start watching for the calling process to exceed a pss 4229 * size as given here. Once called, the system will look for any occasions where it 4230 * sees the associated process with a larger pss size and, when this happens, automatically 4231 * pull a heap dump from it and allow the user to share the data. Note that this request 4232 * continues running even if the process is killed and restarted. To remove the watch, 4233 * use {@link #clearWatchHeapLimit()}. 4234 * 4235 * <p>This API only work if the calling process has been marked as 4236 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4237 * (userdebug or eng) build.</p> 4238 * 4239 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4240 * handle heap limit reports themselves.</p> 4241 * 4242 * @param pssSize The size in bytes to set the limit at. 4243 */ 4244 public void setWatchHeapLimit(long pssSize) { 4245 try { 4246 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4247 mContext.getPackageName()); 4248 } catch (RemoteException e) { 4249 throw e.rethrowFromSystemServer(); 4250 } 4251 } 4252 4253 /** 4254 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4255 * If your package has an activity handling this action, it will be launched with the 4256 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4257 * match the activty must support this action and a MIME type of "*/*". 4258 */ 4259 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4260 4261 /** 4262 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4263 */ 4264 public void clearWatchHeapLimit() { 4265 try { 4266 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4267 } catch (RemoteException e) { 4268 throw e.rethrowFromSystemServer(); 4269 } 4270 } 4271 4272 /** 4273 * @hide 4274 */ 4275 public void startLockTaskMode(int taskId) { 4276 try { 4277 getService().startLockTaskModeById(taskId); 4278 } catch (RemoteException e) { 4279 throw e.rethrowFromSystemServer(); 4280 } 4281 } 4282 4283 /** 4284 * @hide 4285 */ 4286 public void stopLockTaskMode() { 4287 try { 4288 getService().stopLockTaskMode(); 4289 } catch (RemoteException e) { 4290 throw e.rethrowFromSystemServer(); 4291 } 4292 } 4293 4294 /** 4295 * Return whether currently in lock task mode. When in this mode 4296 * no new tasks can be created or switched to. 4297 * 4298 * @see Activity#startLockTask() 4299 * 4300 * @deprecated Use {@link #getLockTaskModeState} instead. 4301 */ 4302 @Deprecated 4303 public boolean isInLockTaskMode() { 4304 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4305 } 4306 4307 /** 4308 * Return the current state of task locking. The three possible outcomes 4309 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4310 * and {@link #LOCK_TASK_MODE_PINNED}. 4311 * 4312 * @see Activity#startLockTask() 4313 */ 4314 public int getLockTaskModeState() { 4315 try { 4316 return getService().getLockTaskModeState(); 4317 } catch (RemoteException e) { 4318 throw e.rethrowFromSystemServer(); 4319 } 4320 } 4321 4322 /** 4323 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4324 * thread can be a VR thread in a process at a time, and that thread may be subject to 4325 * restrictions on the amount of time it can run. 4326 * 4327 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4328 * method will return to normal operation, and calling this method will do nothing while 4329 * persistent VR mode is enabled. 4330 * 4331 * To reset the VR thread for an application, a tid of 0 can be passed. 4332 * 4333 * @see android.os.Process#myTid() 4334 * @param tid tid of the VR thread 4335 */ 4336 public static void setVrThread(int tid) { 4337 try { 4338 getService().setVrThread(tid); 4339 } catch (RemoteException e) { 4340 // pass 4341 } 4342 } 4343 4344 /** 4345 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4346 * beyond a single process. Only one thread can be a 4347 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4348 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4349 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4350 * persistent VR thread loses its new scheduling priority; this method must be called again to 4351 * set the persistent thread. 4352 * 4353 * To reset the persistent VR thread, a tid of 0 can be passed. 4354 * 4355 * @see android.os.Process#myTid() 4356 * @param tid tid of the VR thread 4357 * @hide 4358 */ 4359 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4360 public static void setPersistentVrThread(int tid) { 4361 try { 4362 getService().setPersistentVrThread(tid); 4363 } catch (RemoteException e) { 4364 // pass 4365 } 4366 } 4367 4368 /** 4369 * The AppTask allows you to manage your own application's tasks. 4370 * See {@link android.app.ActivityManager#getAppTasks()} 4371 */ 4372 public static class AppTask { 4373 private IAppTask mAppTaskImpl; 4374 4375 /** @hide */ 4376 public AppTask(IAppTask task) { 4377 mAppTaskImpl = task; 4378 } 4379 4380 /** 4381 * Finishes all activities in this task and removes it from the recent tasks list. 4382 */ 4383 public void finishAndRemoveTask() { 4384 try { 4385 mAppTaskImpl.finishAndRemoveTask(); 4386 } catch (RemoteException e) { 4387 throw e.rethrowFromSystemServer(); 4388 } 4389 } 4390 4391 /** 4392 * Get the RecentTaskInfo associated with this task. 4393 * 4394 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4395 */ 4396 public RecentTaskInfo getTaskInfo() { 4397 try { 4398 return mAppTaskImpl.getTaskInfo(); 4399 } catch (RemoteException e) { 4400 throw e.rethrowFromSystemServer(); 4401 } 4402 } 4403 4404 /** 4405 * Bring this task to the foreground. If it contains activities, they will be 4406 * brought to the foreground with it and their instances re-created if needed. 4407 * If it doesn't contain activities, the root activity of the task will be 4408 * re-launched. 4409 */ 4410 public void moveToFront() { 4411 try { 4412 mAppTaskImpl.moveToFront(); 4413 } catch (RemoteException e) { 4414 throw e.rethrowFromSystemServer(); 4415 } 4416 } 4417 4418 /** 4419 * Start an activity in this task. Brings the task to the foreground. If this task 4420 * is not currently active (that is, its id < 0), then a new activity for the given 4421 * Intent will be launched as the root of the task and the task brought to the 4422 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4423 * an activity to launch in a new task, then a new activity for the given Intent will 4424 * be launched on top of the task and the task brought to the foreground. If this 4425 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4426 * or would otherwise be launched in to a new task, then the activity not launched but 4427 * this task be brought to the foreground and a new intent delivered to the top 4428 * activity if appropriate. 4429 * 4430 * <p>In other words, you generally want to use an Intent here that does not specify 4431 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4432 * and let the system do the right thing.</p> 4433 * 4434 * @param intent The Intent describing the new activity to be launched on the task. 4435 * @param options Optional launch options. 4436 * 4437 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4438 */ 4439 public void startActivity(Context context, Intent intent, Bundle options) { 4440 ActivityThread thread = ActivityThread.currentActivityThread(); 4441 thread.getInstrumentation().execStartActivityFromAppTask(context, 4442 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4443 } 4444 4445 /** 4446 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4447 * Intent of this AppTask. 4448 * 4449 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4450 * be set; otherwise, it will be cleared. 4451 */ 4452 public void setExcludeFromRecents(boolean exclude) { 4453 try { 4454 mAppTaskImpl.setExcludeFromRecents(exclude); 4455 } catch (RemoteException e) { 4456 throw e.rethrowFromSystemServer(); 4457 } 4458 } 4459 } 4460} 4461