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 17 package android.app; 18 19 import android.Manifest; 20 import android.annotation.IntDef; 21 import android.annotation.NonNull; 22 import android.annotation.Nullable; 23 import android.annotation.RequiresPermission; 24 import android.annotation.SystemApi; 25 import android.annotation.SystemService; 26 import android.annotation.TestApi; 27 import android.content.ComponentName; 28 import android.content.Context; 29 import android.content.Intent; 30 import android.content.UriPermission; 31 import android.content.pm.ActivityInfo; 32 import android.content.pm.ApplicationInfo; 33 import android.content.pm.ConfigurationInfo; 34 import android.content.pm.IPackageDataObserver; 35 import android.content.pm.PackageManager; 36 import android.content.pm.ParceledListSlice; 37 import android.content.pm.UserInfo; 38 import android.content.res.Configuration; 39 import android.content.res.Resources; 40 import android.graphics.Bitmap; 41 import android.graphics.Canvas; 42 import android.graphics.Color; 43 import android.graphics.GraphicBuffer; 44 import android.graphics.Matrix; 45 import android.graphics.Point; 46 import android.graphics.Rect; 47 import android.os.BatteryStats; 48 import android.os.Build; 49 import android.os.Build.VERSION_CODES; 50 import android.os.Bundle; 51 import android.os.Debug; 52 import android.os.Handler; 53 import android.os.IBinder; 54 import android.os.Parcel; 55 import android.os.ParcelFileDescriptor; 56 import android.os.Parcelable; 57 import android.os.Process; 58 import android.os.RemoteException; 59 import android.os.ServiceManager; 60 import android.os.SystemProperties; 61 import android.os.UserHandle; 62 import android.text.TextUtils; 63 import android.util.ArrayMap; 64 import android.util.DisplayMetrics; 65 import android.util.Singleton; 66 import android.util.Size; 67 68 import com.android.internal.app.procstats.ProcessStats; 69 import com.android.internal.os.RoSystemProperties; 70 import com.android.internal.os.TransferPipe; 71 import com.android.internal.util.FastPrintWriter; 72 import com.android.server.LocalServices; 73 74 import org.xmlpull.v1.XmlSerializer; 75 76 import java.io.FileDescriptor; 77 import java.io.FileOutputStream; 78 import java.io.IOException; 79 import java.io.PrintWriter; 80 import java.lang.annotation.Retention; 81 import java.lang.annotation.RetentionPolicy; 82 import java.util.ArrayList; 83 import 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 */ 120 @SystemService(Context.ACTIVITY_SERVICE) 121 public class ActivityManager { 122 private static String TAG = "ActivityManager"; 123 124 private static int gMaxRecentTasks = -1; 125 126 private final Context mContext; 127 128 private static volatile boolean sSystemReady = false; 129 130 131 private static final int FIRST_START_FATAL_ERROR_CODE = -100; 132 private static final int LAST_START_FATAL_ERROR_CODE = -1; 133 private static final int FIRST_START_SUCCESS_CODE = 0; 134 private static final int LAST_START_SUCCESS_CODE = 99; 135 private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; 136 private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; 137 138 /** 139 * System property to enable task snapshots. 140 * @hide 141 */ 142 public final static boolean ENABLE_TASK_SNAPSHOTS; 143 144 static { 145 ENABLE_TASK_SNAPSHOTS = SystemProperties.getBoolean("persist.enable_task_snapshots", true); 146 } 147 148 static final class UidObserver extends IUidObserver.Stub { 149 final OnUidImportanceListener mListener; 150 final Context mContext; 151 152 UidObserver(OnUidImportanceListener listener, Context clientContext) { 153 mListener = listener; 154 mContext = clientContext; 155 } 156 157 @Override 158 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 159 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 160 procState, mContext)); 161 } 162 163 @Override 164 public void onUidGone(int uid, boolean disabled) { 165 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 166 } 167 168 @Override 169 public void onUidActive(int uid) { 170 } 171 172 @Override 173 public void onUidIdle(int uid, boolean disabled) { 174 } 175 176 @Override public void onUidCachedChanged(int uid, boolean cached) { 177 } 178 } 179 180 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 181 182 /** 183 * Defines acceptable types of bugreports. 184 * @hide 185 */ 186 @Retention(RetentionPolicy.SOURCE) 187 @IntDef({ 188 BUGREPORT_OPTION_FULL, 189 BUGREPORT_OPTION_INTERACTIVE, 190 BUGREPORT_OPTION_REMOTE, 191 BUGREPORT_OPTION_WEAR, 192 BUGREPORT_OPTION_TELEPHONY 193 }) 194 public @interface BugreportMode {} 195 /** 196 * Takes a bugreport without user interference (and hence causing less 197 * interference to the system), but includes all sections. 198 * @hide 199 */ 200 public static final int BUGREPORT_OPTION_FULL = 0; 201 /** 202 * Allows user to monitor progress and enter additional data; might not include all 203 * sections. 204 * @hide 205 */ 206 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 207 /** 208 * Takes a bugreport requested remotely by administrator of the Device Owner app, 209 * not the device's user. 210 * @hide 211 */ 212 public static final int BUGREPORT_OPTION_REMOTE = 2; 213 /** 214 * Takes a bugreport on a wearable device. 215 * @hide 216 */ 217 public static final int BUGREPORT_OPTION_WEAR = 3; 218 219 /** 220 * Takes a lightweight version of bugreport that only includes a few, urgent sections 221 * used to report telephony bugs. 222 * @hide 223 */ 224 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 225 226 /** 227 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 228 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 229 * uninstalled in lieu of the declaring one. The package named here must be 230 * signed with the same certificate as the one declaring the {@code <meta-data>}. 231 */ 232 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 233 234 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 235 // result is properly categorized. 236 237 /** 238 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 239 * @hide 240 */ 241 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 242 243 /** 244 * Result for IActivityManager.startVoiceActivity: active session does not match 245 * the requesting token. 246 * @hide 247 */ 248 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 249 250 /** 251 * Result for IActivityManager.startActivity: trying to start a background user 252 * activity that shouldn't be displayed for all users. 253 * @hide 254 */ 255 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 256 257 /** 258 * Result for IActivityManager.startActivity: trying to start an activity under voice 259 * control when that activity does not support the VOICE category. 260 * @hide 261 */ 262 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 263 264 /** 265 * Result for IActivityManager.startActivity: an error where the 266 * start had to be canceled. 267 * @hide 268 */ 269 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 270 271 /** 272 * Result for IActivityManager.startActivity: an error where the 273 * thing being started is not an activity. 274 * @hide 275 */ 276 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 277 278 /** 279 * Result for IActivityManager.startActivity: an error where the 280 * caller does not have permission to start the activity. 281 * @hide 282 */ 283 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 284 285 /** 286 * Result for IActivityManager.startActivity: an error where the 287 * caller has requested both to forward a result and to receive 288 * a result. 289 * @hide 290 */ 291 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 292 293 /** 294 * Result for IActivityManager.startActivity: an error where the 295 * requested class is not found. 296 * @hide 297 */ 298 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 299 300 /** 301 * Result for IActivityManager.startActivity: an error where the 302 * given Intent could not be resolved to an activity. 303 * @hide 304 */ 305 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 306 307 /** 308 * Result for IActivityManager.startAssistantActivity: active session is currently hidden. 309 * @hide 310 */ 311 public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; 312 313 /** 314 * Result for IActivityManager.startAssistantActivity: active session does not match 315 * the requesting token. 316 * @hide 317 */ 318 public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; 319 320 /** 321 * Result for IActivityManaqer.startActivity: the activity was started 322 * successfully as normal. 323 * @hide 324 */ 325 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 326 327 /** 328 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 329 * be executed if it is the recipient, and that is indeed the case. 330 * @hide 331 */ 332 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 333 334 /** 335 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 336 * a task was simply brought to the foreground. 337 * @hide 338 */ 339 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 340 341 /** 342 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 343 * the given Intent was given to the existing top activity. 344 * @hide 345 */ 346 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 347 348 /** 349 * Result for IActivityManaqer.startActivity: request was canceled because 350 * app switches are temporarily canceled to ensure the user's last request 351 * (such as pressing home) is performed. 352 * @hide 353 */ 354 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 355 356 /** 357 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 358 * while in Lock Task Mode. 359 * @hide 360 */ 361 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 362 FIRST_START_NON_FATAL_ERROR_CODE + 1; 363 364 /** 365 * Result for IActivityManaqer.startActivity: a new activity start was aborted. Never returned 366 * externally. 367 * @hide 368 */ 369 public static final int START_ABORTED = FIRST_START_NON_FATAL_ERROR_CODE + 2; 370 371 /** 372 * Flag for IActivityManaqer.startActivity: do special start mode where 373 * a new activity is launched only if it is needed. 374 * @hide 375 */ 376 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 377 378 /** 379 * Flag for IActivityManaqer.startActivity: launch the app for 380 * debugging. 381 * @hide 382 */ 383 public static final int START_FLAG_DEBUG = 1<<1; 384 385 /** 386 * Flag for IActivityManaqer.startActivity: launch the app for 387 * allocation tracking. 388 * @hide 389 */ 390 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 391 392 /** 393 * Flag for IActivityManaqer.startActivity: launch the app with 394 * native debugging support. 395 * @hide 396 */ 397 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 398 399 /** 400 * Result for IActivityManaqer.broadcastIntent: success! 401 * @hide 402 */ 403 public static final int BROADCAST_SUCCESS = 0; 404 405 /** 406 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 407 * a sticky intent without appropriate permission. 408 * @hide 409 */ 410 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 411 412 /** 413 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 414 * to a stopped user. Fail. 415 * @hide 416 */ 417 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 418 419 /** 420 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 421 * for a sendBroadcast operation. 422 * @hide 423 */ 424 public static final int INTENT_SENDER_BROADCAST = 1; 425 426 /** 427 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 428 * for a startActivity operation. 429 * @hide 430 */ 431 public static final int INTENT_SENDER_ACTIVITY = 2; 432 433 /** 434 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 435 * for an activity result operation. 436 * @hide 437 */ 438 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 439 440 /** 441 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 442 * for a startService operation. 443 * @hide 444 */ 445 public static final int INTENT_SENDER_SERVICE = 4; 446 447 /** 448 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 449 * for a startForegroundService operation. 450 * @hide 451 */ 452 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 453 454 /** @hide User operation call: success! */ 455 public static final int USER_OP_SUCCESS = 0; 456 457 /** @hide User operation call: given user id is not known. */ 458 public static final int USER_OP_UNKNOWN_USER = -1; 459 460 /** @hide User operation call: given user id is the current user, can't be stopped. */ 461 public static final int USER_OP_IS_CURRENT = -2; 462 463 /** @hide User operation call: system user can't be stopped. */ 464 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 465 466 /** @hide User operation call: one of related users cannot be stopped. */ 467 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 468 469 /** @hide Not a real process state. */ 470 public static final int PROCESS_STATE_UNKNOWN = -1; 471 472 /** @hide Process is a persistent system process. */ 473 public static final int PROCESS_STATE_PERSISTENT = 0; 474 475 /** @hide Process is a persistent system process and is doing UI. */ 476 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 477 478 /** @hide Process is hosting the current top activities. Note that this covers 479 * all activities that are visible to the user. */ 480 public static final int PROCESS_STATE_TOP = 2; 481 482 /** @hide Process is hosting a foreground service due to a system binding. */ 483 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 484 485 /** @hide Process is hosting a foreground service. */ 486 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 487 488 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 489 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 490 491 /** @hide Process is important to the user, and something they are aware of. */ 492 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 493 494 /** @hide Process is important to the user, but not something they are aware of. */ 495 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 496 497 /** @hide Process is in the background transient so we will try to keep running. */ 498 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 499 500 /** @hide Process is in the background running a backup/restore operation. */ 501 public static final int PROCESS_STATE_BACKUP = 9; 502 503 /** @hide Process is in the background, but it can't restore its state so we want 504 * to try to avoid killing it. */ 505 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 506 507 /** @hide Process is in the background running a service. Unlike oom_adj, this level 508 * is used for both the normal running in background state and the executing 509 * operations state. */ 510 public static final int PROCESS_STATE_SERVICE = 11; 511 512 /** @hide Process is in the background running a receiver. Note that from the 513 * perspective of oom_adj receivers run at a higher foreground level, but for our 514 * prioritization here that is not necessary and putting them below services means 515 * many fewer changes in some process states as they receive broadcasts. */ 516 public static final int PROCESS_STATE_RECEIVER = 12; 517 518 /** @hide Process is in the background but hosts the home activity. */ 519 public static final int PROCESS_STATE_HOME = 13; 520 521 /** @hide Process is in the background but hosts the last shown activity. */ 522 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 523 524 /** @hide Process is being cached for later use and contains activities. */ 525 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 526 527 /** @hide Process is being cached for later use and is a client of another cached 528 * process that contains activities. */ 529 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 530 531 /** @hide Process is being cached for later use and is empty. */ 532 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 533 534 /** @hide Process does not exist. */ 535 public static final int PROCESS_STATE_NONEXISTENT = 18; 536 537 /** @hide The lowest process state number */ 538 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 539 540 /** @hide The highest process state number */ 541 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 542 543 /** @hide Should this process state be considered a background state? */ 544 public static final boolean isProcStateBackground(int procState) { 545 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 546 } 547 548 /** @hide requestType for assist context: only basic information. */ 549 public static final int ASSIST_CONTEXT_BASIC = 0; 550 551 /** @hide requestType for assist context: generate full AssistStructure. */ 552 public static final int ASSIST_CONTEXT_FULL = 1; 553 554 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 555 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 556 557 /** @hide Flag for registerUidObserver: report changes in process state. */ 558 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 559 560 /** @hide Flag for registerUidObserver: report uid gone. */ 561 public static final int UID_OBSERVER_GONE = 1<<1; 562 563 /** @hide Flag for registerUidObserver: report uid has become idle. */ 564 public static final int UID_OBSERVER_IDLE = 1<<2; 565 566 /** @hide Flag for registerUidObserver: report uid has become active. */ 567 public static final int UID_OBSERVER_ACTIVE = 1<<3; 568 569 /** @hide Flag for registerUidObserver: report uid cached state has changed. */ 570 public static final int UID_OBSERVER_CACHED = 1<<4; 571 572 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 573 public static final int APP_START_MODE_NORMAL = 0; 574 575 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 576 public static final int APP_START_MODE_DELAYED = 1; 577 578 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 579 * rigid errors (throwing exception). */ 580 public static final int APP_START_MODE_DELAYED_RIGID = 2; 581 582 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 583 * launches; this is the mode for ephemeral apps. */ 584 public static final int APP_START_MODE_DISABLED = 3; 585 586 /** 587 * Lock task mode is not active. 588 */ 589 public static final int LOCK_TASK_MODE_NONE = 0; 590 591 /** 592 * Full lock task mode is active. 593 */ 594 public static final int LOCK_TASK_MODE_LOCKED = 1; 595 596 /** 597 * App pinning mode is active. 598 */ 599 public static final int LOCK_TASK_MODE_PINNED = 2; 600 601 Point mAppTaskThumbnailSize; 602 603 /*package*/ ActivityManager(Context context, Handler handler) { 604 mContext = context; 605 } 606 607 /** 608 * Returns whether the launch was successful. 609 * @hide 610 */ 611 public static final boolean isStartResultSuccessful(int result) { 612 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 613 } 614 615 /** 616 * Returns whether the launch result was a fatal error. 617 * @hide 618 */ 619 public static final boolean isStartResultFatalError(int result) { 620 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 621 } 622 623 /** 624 * Screen compatibility mode: the application most always run in 625 * compatibility mode. 626 * @hide 627 */ 628 public static final int COMPAT_MODE_ALWAYS = -1; 629 630 /** 631 * Screen compatibility mode: the application can never run in 632 * compatibility mode. 633 * @hide 634 */ 635 public static final int COMPAT_MODE_NEVER = -2; 636 637 /** 638 * Screen compatibility mode: unknown. 639 * @hide 640 */ 641 public static final int COMPAT_MODE_UNKNOWN = -3; 642 643 /** 644 * Screen compatibility mode: the application currently has compatibility 645 * mode disabled. 646 * @hide 647 */ 648 public static final int COMPAT_MODE_DISABLED = 0; 649 650 /** 651 * Screen compatibility mode: the application currently has compatibility 652 * mode enabled. 653 * @hide 654 */ 655 public static final int COMPAT_MODE_ENABLED = 1; 656 657 /** 658 * Screen compatibility mode: request to toggle the application's 659 * compatibility mode. 660 * @hide 661 */ 662 public static final int COMPAT_MODE_TOGGLE = 2; 663 664 private static final boolean DEVELOPMENT_FORCE_LOW_RAM = 665 SystemProperties.getBoolean("debug.force_low_ram", false); 666 667 /** @hide */ 668 public static class StackId { 669 /** Invalid stack ID. */ 670 public static final int INVALID_STACK_ID = -1; 671 672 /** First static stack ID. */ 673 public static final int FIRST_STATIC_STACK_ID = 0; 674 675 /** Home activity stack ID. */ 676 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 677 678 /** ID of stack where fullscreen activities are normally launched into. */ 679 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 680 681 /** ID of stack where freeform/resized activities are normally launched into. */ 682 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 683 684 /** ID of stack that occupies a dedicated region of the screen. */ 685 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 686 687 /** ID of stack that always on top (always visible) when it exist. */ 688 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 689 690 /** ID of stack that contains the Recents activity. */ 691 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 692 693 /** ID of stack that contains activities launched by the assistant. */ 694 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 695 696 /** Last static stack stack ID. */ 697 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 698 699 /** Start of ID range used by stacks that are created dynamically. */ 700 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 701 702 public static boolean isStaticStack(int stackId) { 703 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 704 } 705 706 public static boolean isDynamicStack(int stackId) { 707 return stackId >= FIRST_DYNAMIC_STACK_ID; 708 } 709 710 /** 711 * Returns true if the activities contained in the input stack display a shadow around 712 * their border. 713 */ 714 public static boolean hasWindowShadow(int stackId) { 715 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 716 } 717 718 /** 719 * Returns true if the activities contained in the input stack display a decor view. 720 */ 721 public static boolean hasWindowDecor(int stackId) { 722 return stackId == FREEFORM_WORKSPACE_STACK_ID; 723 } 724 725 /** 726 * Returns true if the tasks contained in the stack can be resized independently of the 727 * stack. 728 */ 729 public static boolean isTaskResizeAllowed(int stackId) { 730 return stackId == FREEFORM_WORKSPACE_STACK_ID; 731 } 732 733 /** Returns true if the task bounds should persist across power cycles. */ 734 public static boolean persistTaskBounds(int stackId) { 735 return stackId == FREEFORM_WORKSPACE_STACK_ID; 736 } 737 738 /** 739 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 740 */ 741 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 742 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 743 } 744 745 /** 746 * Returns true if we try to maintain focus in the current stack when the top activity 747 * finishes. 748 */ 749 public static boolean keepFocusInStackIfPossible(int stackId) { 750 return stackId == FREEFORM_WORKSPACE_STACK_ID 751 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 752 } 753 754 /** 755 * Returns true if Stack size is affected by the docked stack changing size. 756 */ 757 public static boolean isResizeableByDockedStack(int stackId) { 758 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 759 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 760 } 761 762 /** 763 * Returns true if the size of tasks in the input stack are affected by the docked stack 764 * changing size. 765 */ 766 public static boolean isTaskResizeableByDockedStack(int stackId) { 767 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 768 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 769 && stackId != ASSISTANT_STACK_ID; 770 } 771 772 /** 773 * Returns true if the input stack is affected by drag resizing. 774 */ 775 public static boolean isStackAffectedByDragResizing(int stackId) { 776 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 777 && stackId != ASSISTANT_STACK_ID; 778 } 779 780 /** 781 * Returns true if the windows of tasks being moved to the target stack from the source 782 * stack should be replaced, meaning that window manager will keep the old window around 783 * until the new is ready. 784 */ 785 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 786 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 787 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 788 } 789 790 /** 791 * Return whether a stackId is a stack containing floating windows. Floating windows 792 * are laid out differently as they are allowed to extend past the display bounds 793 * without overscan insets. 794 */ 795 public static boolean tasksAreFloating(int stackId) { 796 return stackId == FREEFORM_WORKSPACE_STACK_ID 797 || stackId == PINNED_STACK_ID; 798 } 799 800 /** 801 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 802 * are generally fullscreen stacks. 803 */ 804 public static boolean isBackdropToTranslucentActivity(int stackId) { 805 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 806 || stackId == ASSISTANT_STACK_ID; 807 } 808 809 /** 810 * Returns true if animation specs should be constructed for app transition that moves 811 * the task to the specified stack. 812 */ 813 public static boolean useAnimationSpecForAppTransition(int stackId) { 814 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 815 // reboots. 816 return stackId == FREEFORM_WORKSPACE_STACK_ID 817 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 818 || stackId == ASSISTANT_STACK_ID 819 || stackId == DOCKED_STACK_ID 820 || stackId == INVALID_STACK_ID; 821 } 822 823 /** 824 * Returns true if the windows in the stack can receive input keys. 825 */ 826 public static boolean canReceiveKeys(int stackId) { 827 return stackId != PINNED_STACK_ID; 828 } 829 830 /** 831 * Returns true if the stack can be visible above lockscreen. 832 */ 833 public static boolean isAllowedOverLockscreen(int stackId) { 834 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 835 stackId == ASSISTANT_STACK_ID; 836 } 837 838 /** 839 * Returns true if activities from stasks in the given {@param stackId} are allowed to 840 * enter picture-in-picture. 841 */ 842 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 843 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 844 stackId != RECENTS_STACK_ID; 845 } 846 847 public static boolean isAlwaysOnTop(int stackId) { 848 return stackId == PINNED_STACK_ID; 849 } 850 851 /** 852 * Returns true if the top task in the task is allowed to return home when finished and 853 * there are other tasks in the stack. 854 */ 855 public static boolean allowTopTaskToReturnHome(int stackId) { 856 return stackId != PINNED_STACK_ID; 857 } 858 859 /** 860 * Returns true if the stack should be resized to match the bounds specified by 861 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 862 */ 863 public static boolean resizeStackWithLaunchBounds(int stackId) { 864 return stackId == PINNED_STACK_ID; 865 } 866 867 /** 868 * Returns true if any visible windows belonging to apps in this stack should be kept on 869 * screen when the app is killed due to something like the low memory killer. 870 */ 871 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 872 return stackId != PINNED_STACK_ID; 873 } 874 875 /** 876 * Returns true if the backdrop on the client side should match the frame of the window. 877 * Returns false, if the backdrop should be fullscreen. 878 */ 879 public static boolean useWindowFrameForBackdrop(int stackId) { 880 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 881 } 882 883 /** 884 * Returns true if a window from the specified stack with {@param stackId} are normally 885 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 886 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 887 * etc. 888 */ 889 public static boolean normallyFullscreenWindows(int stackId) { 890 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 891 && stackId != DOCKED_STACK_ID; 892 } 893 894 /** 895 * Returns true if the input stack id should only be present on a device that supports 896 * multi-window mode. 897 * @see android.app.ActivityManager#supportsMultiWindow 898 */ 899 public static boolean isMultiWindowStack(int stackId) { 900 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 901 || stackId == DOCKED_STACK_ID; 902 } 903 904 /** 905 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 906 */ 907 public static boolean isHomeOrRecentsStack(int stackId) { 908 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 909 } 910 911 /** 912 * Returns true if this stack may be scaled without resizing, and windows within may need 913 * to be configured as such. 914 */ 915 public static boolean windowsAreScaleable(int stackId) { 916 return stackId == PINNED_STACK_ID; 917 } 918 919 /** 920 * Returns true if windows in this stack should be given move animations by default. 921 */ 922 public static boolean hasMovementAnimations(int stackId) { 923 return stackId != PINNED_STACK_ID; 924 } 925 926 /** Returns true if the input stack and its content can affect the device orientation. */ 927 public static boolean canSpecifyOrientation(int stackId) { 928 return stackId == HOME_STACK_ID 929 || stackId == RECENTS_STACK_ID 930 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 931 || stackId == ASSISTANT_STACK_ID 932 || isDynamicStack(stackId); 933 } 934 } 935 936 /** 937 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 938 * specifies the position of the created docked stack at the top half of the screen if 939 * in portrait mode or at the left half of the screen if in landscape mode. 940 * @hide 941 */ 942 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 943 944 /** 945 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 946 * specifies the position of the created docked stack at the bottom half of the screen if 947 * in portrait mode or at the right half of the screen if in landscape mode. 948 * @hide 949 */ 950 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 951 952 /** 953 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 954 * that the resize doesn't need to preserve the window, and can be skipped if bounds 955 * is unchanged. This mode is used by window manager in most cases. 956 * @hide 957 */ 958 public static final int RESIZE_MODE_SYSTEM = 0; 959 960 /** 961 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 962 * that the resize should preserve the window if possible. 963 * @hide 964 */ 965 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 966 967 /** 968 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 969 * that the resize should be performed even if the bounds appears unchanged. 970 * @hide 971 */ 972 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 973 974 /** 975 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 976 * manager during a screen rotation. 977 * @hide 978 */ 979 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 980 981 /** 982 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 983 * resize is due to a drag action. 984 * @hide 985 */ 986 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 987 988 /** 989 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 990 * that the resize should preserve the window if possible, and should not be skipped 991 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 992 * is ending. 993 * @hide 994 */ 995 public static final int RESIZE_MODE_USER_FORCED = 996 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 997 998 /** @hide */ 999 public int getFrontActivityScreenCompatMode() { 1000 try { 1001 return getService().getFrontActivityScreenCompatMode(); 1002 } catch (RemoteException e) { 1003 throw e.rethrowFromSystemServer(); 1004 } 1005 } 1006 1007 /** @hide */ 1008 public void setFrontActivityScreenCompatMode(int mode) { 1009 try { 1010 getService().setFrontActivityScreenCompatMode(mode); 1011 } catch (RemoteException e) { 1012 throw e.rethrowFromSystemServer(); 1013 } 1014 } 1015 1016 /** @hide */ 1017 public int getPackageScreenCompatMode(String packageName) { 1018 try { 1019 return getService().getPackageScreenCompatMode(packageName); 1020 } catch (RemoteException e) { 1021 throw e.rethrowFromSystemServer(); 1022 } 1023 } 1024 1025 /** @hide */ 1026 public void setPackageScreenCompatMode(String packageName, int mode) { 1027 try { 1028 getService().setPackageScreenCompatMode(packageName, mode); 1029 } catch (RemoteException e) { 1030 throw e.rethrowFromSystemServer(); 1031 } 1032 } 1033 1034 /** @hide */ 1035 public boolean getPackageAskScreenCompat(String packageName) { 1036 try { 1037 return getService().getPackageAskScreenCompat(packageName); 1038 } catch (RemoteException e) { 1039 throw e.rethrowFromSystemServer(); 1040 } 1041 } 1042 1043 /** @hide */ 1044 public void setPackageAskScreenCompat(String packageName, boolean ask) { 1045 try { 1046 getService().setPackageAskScreenCompat(packageName, ask); 1047 } catch (RemoteException e) { 1048 throw e.rethrowFromSystemServer(); 1049 } 1050 } 1051 1052 /** 1053 * Return the approximate per-application memory class of the current 1054 * device. This gives you an idea of how hard a memory limit you should 1055 * impose on your application to let the overall system work best. The 1056 * returned value is in megabytes; the baseline Android memory class is 1057 * 16 (which happens to be the Java heap limit of those devices); some 1058 * device with more memory may return 24 or even higher numbers. 1059 */ 1060 public int getMemoryClass() { 1061 return staticGetMemoryClass(); 1062 } 1063 1064 /** @hide */ 1065 static public int staticGetMemoryClass() { 1066 // Really brain dead right now -- just take this from the configured 1067 // vm heap size, and assume it is in megabytes and thus ends with "m". 1068 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1069 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1070 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1071 } 1072 return staticGetLargeMemoryClass(); 1073 } 1074 1075 /** 1076 * Return the approximate per-application memory class of the current 1077 * device when an application is running with a large heap. This is the 1078 * space available for memory-intensive applications; most applications 1079 * should not need this amount of memory, and should instead stay with the 1080 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1081 * This may be the same size as {@link #getMemoryClass()} on memory 1082 * constrained devices, or it may be significantly larger on devices with 1083 * a large amount of available RAM. 1084 * 1085 * <p>The is the size of the application's Dalvik heap if it has 1086 * specified <code>android:largeHeap="true"</code> in its manifest. 1087 */ 1088 public int getLargeMemoryClass() { 1089 return staticGetLargeMemoryClass(); 1090 } 1091 1092 /** @hide */ 1093 static public int staticGetLargeMemoryClass() { 1094 // Really brain dead right now -- just take this from the configured 1095 // vm heap size, and assume it is in megabytes and thus ends with "m". 1096 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1097 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1098 } 1099 1100 /** 1101 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1102 * is ultimately up to the device configuration, but currently it generally means 1103 * something in the class of a 512MB device with about a 800x480 or less screen. 1104 * This is mostly intended to be used by apps to determine whether they should turn 1105 * off certain features that require more RAM. 1106 */ 1107 public boolean isLowRamDevice() { 1108 return isLowRamDeviceStatic(); 1109 } 1110 1111 /** @hide */ 1112 public static boolean isLowRamDeviceStatic() { 1113 return RoSystemProperties.CONFIG_LOW_RAM || 1114 (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); 1115 } 1116 1117 /** 1118 * Returns true if this is a small battery device. Exactly whether a device is considered to be 1119 * small battery is ultimately up to the device configuration, but currently it generally means 1120 * something in the class of a device with 1000 mAh or less. This is mostly intended to be used 1121 * to determine whether certain features should be altered to account for a drastically smaller 1122 * battery. 1123 * @hide 1124 */ 1125 public static boolean isSmallBatteryDevice() { 1126 return RoSystemProperties.CONFIG_SMALL_BATTERY; 1127 } 1128 1129 /** 1130 * Used by persistent processes to determine if they are running on a 1131 * higher-end device so should be okay using hardware drawing acceleration 1132 * (which tends to consume a lot more RAM). 1133 * @hide 1134 */ 1135 static public boolean isHighEndGfx() { 1136 return !isLowRamDeviceStatic() && 1137 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1138 } 1139 1140 /** 1141 * Return the maximum number of recents entries that we will maintain and show. 1142 * @hide 1143 */ 1144 static public int getMaxRecentTasksStatic() { 1145 if (gMaxRecentTasks < 0) { 1146 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1147 } 1148 return gMaxRecentTasks; 1149 } 1150 1151 /** 1152 * Return the default limit on the number of recents that an app can make. 1153 * @hide 1154 */ 1155 static public int getDefaultAppRecentsLimitStatic() { 1156 return getMaxRecentTasksStatic() / 6; 1157 } 1158 1159 /** 1160 * Return the maximum limit on the number of recents that an app can make. 1161 * @hide 1162 */ 1163 static public int getMaxAppRecentsLimitStatic() { 1164 return getMaxRecentTasksStatic() / 2; 1165 } 1166 1167 /** 1168 * Returns true if the system supports at least one form of multi-window. 1169 * E.g. freeform, split-screen, picture-in-picture. 1170 * @hide 1171 */ 1172 static public boolean supportsMultiWindow(Context context) { 1173 // On watches, multi-window is used to present essential system UI, and thus it must be 1174 // supported regardless of device memory characteristics. 1175 boolean isWatch = context.getPackageManager().hasSystemFeature( 1176 PackageManager.FEATURE_WATCH); 1177 return (!isLowRamDeviceStatic() || isWatch) 1178 && Resources.getSystem().getBoolean( 1179 com.android.internal.R.bool.config_supportsMultiWindow); 1180 } 1181 1182 /** 1183 * Returns true if the system supports split screen multi-window. 1184 * @hide 1185 */ 1186 static public boolean supportsSplitScreenMultiWindow(Context context) { 1187 return supportsMultiWindow(context) 1188 && Resources.getSystem().getBoolean( 1189 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1190 } 1191 1192 /** @removed */ 1193 @Deprecated 1194 public static int getMaxNumPictureInPictureActions() { 1195 return 3; 1196 } 1197 1198 /** 1199 * Information you can set and retrieve about the current activity within the recent task list. 1200 */ 1201 public static class TaskDescription implements Parcelable { 1202 /** @hide */ 1203 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1204 private static final String ATTR_TASKDESCRIPTIONLABEL = 1205 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1206 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1207 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1208 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1209 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1210 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1211 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1212 1213 private String mLabel; 1214 private Bitmap mIcon; 1215 private String mIconFilename; 1216 private int mColorPrimary; 1217 private int mColorBackground; 1218 private int mStatusBarColor; 1219 private int mNavigationBarColor; 1220 1221 /** 1222 * Creates the TaskDescription to the specified values. 1223 * 1224 * @param label A label and description of the current state of this task. 1225 * @param icon An icon that represents the current state of this task. 1226 * @param colorPrimary A color to override the theme's primary color. This color must be 1227 * opaque. 1228 */ 1229 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1230 this(label, icon, null, colorPrimary, 0, 0, 0); 1231 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1232 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1233 } 1234 } 1235 1236 /** 1237 * Creates the TaskDescription to the specified values. 1238 * 1239 * @param label A label and description of the current state of this activity. 1240 * @param icon An icon that represents the current state of this activity. 1241 */ 1242 public TaskDescription(String label, Bitmap icon) { 1243 this(label, icon, null, 0, 0, 0, 0); 1244 } 1245 1246 /** 1247 * Creates the TaskDescription to the specified values. 1248 * 1249 * @param label A label and description of the current state of this activity. 1250 */ 1251 public TaskDescription(String label) { 1252 this(label, null, null, 0, 0, 0, 0); 1253 } 1254 1255 /** 1256 * Creates an empty TaskDescription. 1257 */ 1258 public TaskDescription() { 1259 this(null, null, null, 0, 0, 0, 0); 1260 } 1261 1262 /** @hide */ 1263 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1264 int colorBackground, int statusBarColor, int navigationBarColor) { 1265 mLabel = label; 1266 mIcon = icon; 1267 mIconFilename = iconFilename; 1268 mColorPrimary = colorPrimary; 1269 mColorBackground = colorBackground; 1270 mStatusBarColor = statusBarColor; 1271 mNavigationBarColor = navigationBarColor; 1272 } 1273 1274 /** 1275 * Creates a copy of another TaskDescription. 1276 */ 1277 public TaskDescription(TaskDescription td) { 1278 copyFrom(td); 1279 } 1280 1281 /** 1282 * Copies this the values from another TaskDescription. 1283 * @hide 1284 */ 1285 public void copyFrom(TaskDescription other) { 1286 mLabel = other.mLabel; 1287 mIcon = other.mIcon; 1288 mIconFilename = other.mIconFilename; 1289 mColorPrimary = other.mColorPrimary; 1290 mColorBackground = other.mColorBackground; 1291 mStatusBarColor = other.mStatusBarColor; 1292 mNavigationBarColor = other.mNavigationBarColor; 1293 } 1294 1295 /** 1296 * Copies this the values from another TaskDescription, but preserves the hidden fields 1297 * if they weren't set on {@code other} 1298 * @hide 1299 */ 1300 public void copyFromPreserveHiddenFields(TaskDescription other) { 1301 mLabel = other.mLabel; 1302 mIcon = other.mIcon; 1303 mIconFilename = other.mIconFilename; 1304 mColorPrimary = other.mColorPrimary; 1305 if (other.mColorBackground != 0) { 1306 mColorBackground = other.mColorBackground; 1307 } 1308 if (other.mStatusBarColor != 0) { 1309 mStatusBarColor = other.mStatusBarColor; 1310 } 1311 if (other.mNavigationBarColor != 0) { 1312 mNavigationBarColor = other.mNavigationBarColor; 1313 } 1314 } 1315 1316 private TaskDescription(Parcel source) { 1317 readFromParcel(source); 1318 } 1319 1320 /** 1321 * Sets the label for this task description. 1322 * @hide 1323 */ 1324 public void setLabel(String label) { 1325 mLabel = label; 1326 } 1327 1328 /** 1329 * Sets the primary color for this task description. 1330 * @hide 1331 */ 1332 public void setPrimaryColor(int primaryColor) { 1333 // Ensure that the given color is valid 1334 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1335 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1336 } 1337 mColorPrimary = primaryColor; 1338 } 1339 1340 /** 1341 * Sets the background color for this task description. 1342 * @hide 1343 */ 1344 public void setBackgroundColor(int backgroundColor) { 1345 // Ensure that the given color is valid 1346 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1347 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1348 } 1349 mColorBackground = backgroundColor; 1350 } 1351 1352 /** 1353 * @hide 1354 */ 1355 public void setStatusBarColor(int statusBarColor) { 1356 mStatusBarColor = statusBarColor; 1357 } 1358 1359 /** 1360 * @hide 1361 */ 1362 public void setNavigationBarColor(int navigationBarColor) { 1363 mNavigationBarColor = navigationBarColor; 1364 } 1365 1366 /** 1367 * Sets the icon for this task description. 1368 * @hide 1369 */ 1370 public void setIcon(Bitmap icon) { 1371 mIcon = icon; 1372 } 1373 1374 /** 1375 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1376 * bitmap. 1377 * @hide 1378 */ 1379 public void setIconFilename(String iconFilename) { 1380 mIconFilename = iconFilename; 1381 mIcon = null; 1382 } 1383 1384 /** 1385 * @return The label and description of the current state of this task. 1386 */ 1387 public String getLabel() { 1388 return mLabel; 1389 } 1390 1391 /** 1392 * @return The icon that represents the current state of this task. 1393 */ 1394 public Bitmap getIcon() { 1395 if (mIcon != null) { 1396 return mIcon; 1397 } 1398 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1399 } 1400 1401 /** @hide */ 1402 public String getIconFilename() { 1403 return mIconFilename; 1404 } 1405 1406 /** @hide */ 1407 public Bitmap getInMemoryIcon() { 1408 return mIcon; 1409 } 1410 1411 /** @hide */ 1412 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1413 if (iconFilename != null) { 1414 try { 1415 return getService().getTaskDescriptionIcon(iconFilename, 1416 userId); 1417 } catch (RemoteException e) { 1418 throw e.rethrowFromSystemServer(); 1419 } 1420 } 1421 return null; 1422 } 1423 1424 /** 1425 * @return The color override on the theme's primary color. 1426 */ 1427 public int getPrimaryColor() { 1428 return mColorPrimary; 1429 } 1430 1431 /** 1432 * @return The background color. 1433 * @hide 1434 */ 1435 public int getBackgroundColor() { 1436 return mColorBackground; 1437 } 1438 1439 /** 1440 * @hide 1441 */ 1442 public int getStatusBarColor() { 1443 return mStatusBarColor; 1444 } 1445 1446 /** 1447 * @hide 1448 */ 1449 public int getNavigationBarColor() { 1450 return mNavigationBarColor; 1451 } 1452 1453 /** @hide */ 1454 public void saveToXml(XmlSerializer out) throws IOException { 1455 if (mLabel != null) { 1456 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1457 } 1458 if (mColorPrimary != 0) { 1459 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1460 Integer.toHexString(mColorPrimary)); 1461 } 1462 if (mColorBackground != 0) { 1463 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1464 Integer.toHexString(mColorBackground)); 1465 } 1466 if (mIconFilename != null) { 1467 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1468 } 1469 } 1470 1471 /** @hide */ 1472 public void restoreFromXml(String attrName, String attrValue) { 1473 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1474 setLabel(attrValue); 1475 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1476 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1477 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1478 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1479 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1480 setIconFilename(attrValue); 1481 } 1482 } 1483 1484 @Override 1485 public int describeContents() { 1486 return 0; 1487 } 1488 1489 @Override 1490 public void writeToParcel(Parcel dest, int flags) { 1491 if (mLabel == null) { 1492 dest.writeInt(0); 1493 } else { 1494 dest.writeInt(1); 1495 dest.writeString(mLabel); 1496 } 1497 if (mIcon == null) { 1498 dest.writeInt(0); 1499 } else { 1500 dest.writeInt(1); 1501 mIcon.writeToParcel(dest, 0); 1502 } 1503 dest.writeInt(mColorPrimary); 1504 dest.writeInt(mColorBackground); 1505 dest.writeInt(mStatusBarColor); 1506 dest.writeInt(mNavigationBarColor); 1507 if (mIconFilename == null) { 1508 dest.writeInt(0); 1509 } else { 1510 dest.writeInt(1); 1511 dest.writeString(mIconFilename); 1512 } 1513 } 1514 1515 public void readFromParcel(Parcel source) { 1516 mLabel = source.readInt() > 0 ? source.readString() : null; 1517 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1518 mColorPrimary = source.readInt(); 1519 mColorBackground = source.readInt(); 1520 mStatusBarColor = source.readInt(); 1521 mNavigationBarColor = source.readInt(); 1522 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1523 } 1524 1525 public static final Creator<TaskDescription> CREATOR 1526 = new Creator<TaskDescription>() { 1527 public TaskDescription createFromParcel(Parcel source) { 1528 return new TaskDescription(source); 1529 } 1530 public TaskDescription[] newArray(int size) { 1531 return new TaskDescription[size]; 1532 } 1533 }; 1534 1535 @Override 1536 public String toString() { 1537 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1538 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1539 " colorBackground: " + mColorBackground + 1540 " statusBarColor: " + mColorBackground + 1541 " navigationBarColor: " + mNavigationBarColor; 1542 } 1543 } 1544 1545 /** 1546 * Information you can retrieve about tasks that the user has most recently 1547 * started or visited. 1548 */ 1549 public static class RecentTaskInfo implements Parcelable { 1550 /** 1551 * If this task is currently running, this is the identifier for it. 1552 * If it is not running, this will be -1. 1553 */ 1554 public int id; 1555 1556 /** 1557 * The true identifier of this task, valid even if it is not running. 1558 */ 1559 public int persistentId; 1560 1561 /** 1562 * The original Intent used to launch the task. You can use this 1563 * Intent to re-launch the task (if it is no longer running) or bring 1564 * the current task to the front. 1565 */ 1566 public Intent baseIntent; 1567 1568 /** 1569 * If this task was started from an alias, this is the actual 1570 * activity component that was initially started; the component of 1571 * the baseIntent in this case is the name of the actual activity 1572 * implementation that the alias referred to. Otherwise, this is null. 1573 */ 1574 public ComponentName origActivity; 1575 1576 /** 1577 * The actual activity component that started the task. 1578 * @hide 1579 */ 1580 @Nullable 1581 public ComponentName realActivity; 1582 1583 /** 1584 * Description of the task's last state. 1585 */ 1586 public CharSequence description; 1587 1588 /** 1589 * The id of the ActivityStack this Task was on most recently. 1590 * @hide 1591 */ 1592 public int stackId; 1593 1594 /** 1595 * The id of the user the task was running as. 1596 * @hide 1597 */ 1598 public int userId; 1599 1600 /** 1601 * The first time this task was active. 1602 * @hide 1603 */ 1604 public long firstActiveTime; 1605 1606 /** 1607 * The last time this task was active. 1608 * @hide 1609 */ 1610 public long lastActiveTime; 1611 1612 /** 1613 * The recent activity values for the highest activity in the stack to have set the values. 1614 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1615 */ 1616 public TaskDescription taskDescription; 1617 1618 /** 1619 * Task affiliation for grouping with other tasks. 1620 */ 1621 public int affiliatedTaskId; 1622 1623 /** 1624 * Task affiliation color of the source task with the affiliated task id. 1625 * 1626 * @hide 1627 */ 1628 public int affiliatedTaskColor; 1629 1630 /** 1631 * The component launched as the first activity in the task. 1632 * This can be considered the "application" of this task. 1633 */ 1634 public ComponentName baseActivity; 1635 1636 /** 1637 * The activity component at the top of the history stack of the task. 1638 * This is what the user is currently doing. 1639 */ 1640 public ComponentName topActivity; 1641 1642 /** 1643 * Number of activities in this task. 1644 */ 1645 public int numActivities; 1646 1647 /** 1648 * The bounds of the task. 1649 * @hide 1650 */ 1651 public Rect bounds; 1652 1653 /** 1654 * True if the task can go in the docked stack. 1655 * @hide 1656 */ 1657 public boolean supportsSplitScreenMultiWindow; 1658 1659 /** 1660 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1661 * @hide 1662 */ 1663 public int resizeMode; 1664 1665 public RecentTaskInfo() { 1666 } 1667 1668 @Override 1669 public int describeContents() { 1670 return 0; 1671 } 1672 1673 @Override 1674 public void writeToParcel(Parcel dest, int flags) { 1675 dest.writeInt(id); 1676 dest.writeInt(persistentId); 1677 if (baseIntent != null) { 1678 dest.writeInt(1); 1679 baseIntent.writeToParcel(dest, 0); 1680 } else { 1681 dest.writeInt(0); 1682 } 1683 ComponentName.writeToParcel(origActivity, dest); 1684 ComponentName.writeToParcel(realActivity, dest); 1685 TextUtils.writeToParcel(description, dest, 1686 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1687 if (taskDescription != null) { 1688 dest.writeInt(1); 1689 taskDescription.writeToParcel(dest, 0); 1690 } else { 1691 dest.writeInt(0); 1692 } 1693 dest.writeInt(stackId); 1694 dest.writeInt(userId); 1695 dest.writeLong(firstActiveTime); 1696 dest.writeLong(lastActiveTime); 1697 dest.writeInt(affiliatedTaskId); 1698 dest.writeInt(affiliatedTaskColor); 1699 ComponentName.writeToParcel(baseActivity, dest); 1700 ComponentName.writeToParcel(topActivity, dest); 1701 dest.writeInt(numActivities); 1702 if (bounds != null) { 1703 dest.writeInt(1); 1704 bounds.writeToParcel(dest, 0); 1705 } else { 1706 dest.writeInt(0); 1707 } 1708 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1709 dest.writeInt(resizeMode); 1710 } 1711 1712 public void readFromParcel(Parcel source) { 1713 id = source.readInt(); 1714 persistentId = source.readInt(); 1715 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1716 origActivity = ComponentName.readFromParcel(source); 1717 realActivity = ComponentName.readFromParcel(source); 1718 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1719 taskDescription = source.readInt() > 0 ? 1720 TaskDescription.CREATOR.createFromParcel(source) : null; 1721 stackId = source.readInt(); 1722 userId = source.readInt(); 1723 firstActiveTime = source.readLong(); 1724 lastActiveTime = source.readLong(); 1725 affiliatedTaskId = source.readInt(); 1726 affiliatedTaskColor = source.readInt(); 1727 baseActivity = ComponentName.readFromParcel(source); 1728 topActivity = ComponentName.readFromParcel(source); 1729 numActivities = source.readInt(); 1730 bounds = source.readInt() > 0 ? 1731 Rect.CREATOR.createFromParcel(source) : null; 1732 supportsSplitScreenMultiWindow = source.readInt() == 1; 1733 resizeMode = source.readInt(); 1734 } 1735 1736 public static final Creator<RecentTaskInfo> CREATOR 1737 = new Creator<RecentTaskInfo>() { 1738 public RecentTaskInfo createFromParcel(Parcel source) { 1739 return new RecentTaskInfo(source); 1740 } 1741 public RecentTaskInfo[] newArray(int size) { 1742 return new RecentTaskInfo[size]; 1743 } 1744 }; 1745 1746 private RecentTaskInfo(Parcel source) { 1747 readFromParcel(source); 1748 } 1749 } 1750 1751 /** 1752 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1753 * that have set their 1754 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1755 */ 1756 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1757 1758 /** 1759 * Provides a list that does not contain any 1760 * recent tasks that currently are not available to the user. 1761 */ 1762 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1763 1764 /** 1765 * Provides a list that contains recent tasks for all 1766 * profiles of a user. 1767 * @hide 1768 */ 1769 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1770 1771 /** 1772 * Ignores all tasks that are on the home stack. 1773 * @hide 1774 */ 1775 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1776 1777 /** 1778 * Ignores the top task in the docked stack. 1779 * @hide 1780 */ 1781 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1782 1783 /** 1784 * Ignores all tasks that are on the pinned stack. 1785 * @hide 1786 */ 1787 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1788 1789 /** 1790 * <p></p>Return a list of the tasks that the user has recently launched, with 1791 * the most recent being first and older ones after in order. 1792 * 1793 * <p><b>Note: this method is only intended for debugging and presenting 1794 * task management user interfaces</b>. This should never be used for 1795 * core logic in an application, such as deciding between different 1796 * behaviors based on the information found here. Such uses are 1797 * <em>not</em> supported, and will likely break in the future. For 1798 * example, if multiple applications can be actively running at the 1799 * same time, assumptions made about the meaning of the data here for 1800 * purposes of control flow will be incorrect.</p> 1801 * 1802 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1803 * no longer available to third party applications: the introduction of 1804 * document-centric recents means 1805 * it can leak personal information to the caller. For backwards compatibility, 1806 * it will still return a small subset of its data: at least the caller's 1807 * own tasks (though see {@link #getAppTasks()} for the correct supported 1808 * way to retrieve that information), and possibly some other tasks 1809 * such as home that are known to not be sensitive. 1810 * 1811 * @param maxNum The maximum number of entries to return in the list. The 1812 * actual number returned may be smaller, depending on how many tasks the 1813 * user has started and the maximum number the system can remember. 1814 * @param flags Information about what to return. May be any combination 1815 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1816 * 1817 * @return Returns a list of RecentTaskInfo records describing each of 1818 * the recent tasks. 1819 */ 1820 @Deprecated 1821 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1822 throws SecurityException { 1823 try { 1824 return getService().getRecentTasks(maxNum, 1825 flags, UserHandle.myUserId()).getList(); 1826 } catch (RemoteException e) { 1827 throw e.rethrowFromSystemServer(); 1828 } 1829 } 1830 1831 /** 1832 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1833 * specific user. It requires holding 1834 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1835 * @param maxNum The maximum number of entries to return in the list. The 1836 * actual number returned may be smaller, depending on how many tasks the 1837 * user has started and the maximum number the system can remember. 1838 * @param flags Information about what to return. May be any combination 1839 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1840 * 1841 * @return Returns a list of RecentTaskInfo records describing each of 1842 * the recent tasks. Most recently activated tasks go first. 1843 * 1844 * @hide 1845 */ 1846 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1847 throws SecurityException { 1848 try { 1849 return getService().getRecentTasks(maxNum, 1850 flags, userId).getList(); 1851 } catch (RemoteException e) { 1852 throw e.rethrowFromSystemServer(); 1853 } 1854 } 1855 1856 /** 1857 * Information you can retrieve about a particular task that is currently 1858 * "running" in the system. Note that a running task does not mean the 1859 * given task actually has a process it is actively running in; it simply 1860 * means that the user has gone to it and never closed it, but currently 1861 * the system may have killed its process and is only holding on to its 1862 * last state in order to restart it when the user returns. 1863 */ 1864 public static class RunningTaskInfo implements Parcelable { 1865 /** 1866 * A unique identifier for this task. 1867 */ 1868 public int id; 1869 1870 /** 1871 * The stack that currently contains this task. 1872 * @hide 1873 */ 1874 public int stackId; 1875 1876 /** 1877 * The component launched as the first activity in the task. This can 1878 * be considered the "application" of this task. 1879 */ 1880 public ComponentName baseActivity; 1881 1882 /** 1883 * The activity component at the top of the history stack of the task. 1884 * This is what the user is currently doing. 1885 */ 1886 public ComponentName topActivity; 1887 1888 /** 1889 * Thumbnail representation of the task's current state. Currently 1890 * always null. 1891 */ 1892 public Bitmap thumbnail; 1893 1894 /** 1895 * Description of the task's current state. 1896 */ 1897 public CharSequence description; 1898 1899 /** 1900 * Number of activities in this task. 1901 */ 1902 public int numActivities; 1903 1904 /** 1905 * Number of activities that are currently running (not stopped 1906 * and persisted) in this task. 1907 */ 1908 public int numRunning; 1909 1910 /** 1911 * Last time task was run. For sorting. 1912 * @hide 1913 */ 1914 public long lastActiveTime; 1915 1916 /** 1917 * True if the task can go in the docked stack. 1918 * @hide 1919 */ 1920 public boolean supportsSplitScreenMultiWindow; 1921 1922 /** 1923 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1924 * @hide 1925 */ 1926 public int resizeMode; 1927 1928 public RunningTaskInfo() { 1929 } 1930 1931 public int describeContents() { 1932 return 0; 1933 } 1934 1935 public void writeToParcel(Parcel dest, int flags) { 1936 dest.writeInt(id); 1937 dest.writeInt(stackId); 1938 ComponentName.writeToParcel(baseActivity, dest); 1939 ComponentName.writeToParcel(topActivity, dest); 1940 if (thumbnail != null) { 1941 dest.writeInt(1); 1942 thumbnail.writeToParcel(dest, 0); 1943 } else { 1944 dest.writeInt(0); 1945 } 1946 TextUtils.writeToParcel(description, dest, 1947 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1948 dest.writeInt(numActivities); 1949 dest.writeInt(numRunning); 1950 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1951 dest.writeInt(resizeMode); 1952 } 1953 1954 public void readFromParcel(Parcel source) { 1955 id = source.readInt(); 1956 stackId = source.readInt(); 1957 baseActivity = ComponentName.readFromParcel(source); 1958 topActivity = ComponentName.readFromParcel(source); 1959 if (source.readInt() != 0) { 1960 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1961 } else { 1962 thumbnail = null; 1963 } 1964 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1965 numActivities = source.readInt(); 1966 numRunning = source.readInt(); 1967 supportsSplitScreenMultiWindow = source.readInt() != 0; 1968 resizeMode = source.readInt(); 1969 } 1970 1971 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1972 public RunningTaskInfo createFromParcel(Parcel source) { 1973 return new RunningTaskInfo(source); 1974 } 1975 public RunningTaskInfo[] newArray(int size) { 1976 return new RunningTaskInfo[size]; 1977 } 1978 }; 1979 1980 private RunningTaskInfo(Parcel source) { 1981 readFromParcel(source); 1982 } 1983 } 1984 1985 /** 1986 * Get the list of tasks associated with the calling application. 1987 * 1988 * @return The list of tasks associated with the application making this call. 1989 * @throws SecurityException 1990 */ 1991 public List<ActivityManager.AppTask> getAppTasks() { 1992 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1993 List<IBinder> appTasks; 1994 try { 1995 appTasks = getService().getAppTasks(mContext.getPackageName()); 1996 } catch (RemoteException e) { 1997 throw e.rethrowFromSystemServer(); 1998 } 1999 int numAppTasks = appTasks.size(); 2000 for (int i = 0; i < numAppTasks; i++) { 2001 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 2002 } 2003 return tasks; 2004 } 2005 2006 /** 2007 * Return the current design dimensions for {@link AppTask} thumbnails, for use 2008 * with {@link #addAppTask}. 2009 */ 2010 public Size getAppTaskThumbnailSize() { 2011 synchronized (this) { 2012 ensureAppTaskThumbnailSizeLocked(); 2013 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 2014 } 2015 } 2016 2017 private void ensureAppTaskThumbnailSizeLocked() { 2018 if (mAppTaskThumbnailSize == null) { 2019 try { 2020 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 2021 } catch (RemoteException e) { 2022 throw e.rethrowFromSystemServer(); 2023 } 2024 } 2025 } 2026 2027 /** 2028 * Add a new {@link AppTask} for the calling application. This will create a new 2029 * recents entry that is added to the <b>end</b> of all existing recents. 2030 * 2031 * @param activity The activity that is adding the entry. This is used to help determine 2032 * the context that the new recents entry will be in. 2033 * @param intent The Intent that describes the recents entry. This is the same Intent that 2034 * you would have used to launch the activity for it. In generally you will want to set 2035 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 2036 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 2037 * entry will exist without an activity, so it doesn't make sense to not retain it when 2038 * its activity disappears. The given Intent here also must have an explicit ComponentName 2039 * set on it. 2040 * @param description Optional additional description information. 2041 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 2042 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 2043 * recreated in your process, probably in a way you don't like, before the recents entry 2044 * is added. 2045 * 2046 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 2047 * most likely cause of failure is that there is no more room for more tasks for your app. 2048 */ 2049 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 2050 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 2051 Point size; 2052 synchronized (this) { 2053 ensureAppTaskThumbnailSizeLocked(); 2054 size = mAppTaskThumbnailSize; 2055 } 2056 final int tw = thumbnail.getWidth(); 2057 final int th = thumbnail.getHeight(); 2058 if (tw != size.x || th != size.y) { 2059 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 2060 2061 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 2062 float scale; 2063 float dx = 0, dy = 0; 2064 if (tw * size.x > size.y * th) { 2065 scale = (float) size.x / (float) th; 2066 dx = (size.y - tw * scale) * 0.5f; 2067 } else { 2068 scale = (float) size.y / (float) tw; 2069 dy = (size.x - th * scale) * 0.5f; 2070 } 2071 Matrix matrix = new Matrix(); 2072 matrix.setScale(scale, scale); 2073 matrix.postTranslate((int) (dx + 0.5f), 0); 2074 2075 Canvas canvas = new Canvas(bm); 2076 canvas.drawBitmap(thumbnail, matrix, null); 2077 canvas.setBitmap(null); 2078 2079 thumbnail = bm; 2080 } 2081 if (description == null) { 2082 description = new TaskDescription(); 2083 } 2084 try { 2085 return getService().addAppTask(activity.getActivityToken(), 2086 intent, description, thumbnail); 2087 } catch (RemoteException e) { 2088 throw e.rethrowFromSystemServer(); 2089 } 2090 } 2091 2092 /** 2093 * Return a list of the tasks that are currently running, with 2094 * the most recent being first and older ones after in order. Note that 2095 * "running" does not mean any of the task's code is currently loaded or 2096 * activity -- the task may have been frozen by the system, so that it 2097 * can be restarted in its previous state when next brought to the 2098 * foreground. 2099 * 2100 * <p><b>Note: this method is only intended for debugging and presenting 2101 * task management user interfaces</b>. This should never be used for 2102 * core logic in an application, such as deciding between different 2103 * behaviors based on the information found here. Such uses are 2104 * <em>not</em> supported, and will likely break in the future. For 2105 * example, if multiple applications can be actively running at the 2106 * same time, assumptions made about the meaning of the data here for 2107 * purposes of control flow will be incorrect.</p> 2108 * 2109 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 2110 * is no longer available to third party 2111 * applications: the introduction of document-centric recents means 2112 * it can leak person information to the caller. For backwards compatibility, 2113 * it will still retu rn a small subset of its data: at least the caller's 2114 * own tasks, and possibly some other tasks 2115 * such as home that are known to not be sensitive. 2116 * 2117 * @param maxNum The maximum number of entries to return in the list. The 2118 * actual number returned may be smaller, depending on how many tasks the 2119 * user has started. 2120 * 2121 * @return Returns a list of RunningTaskInfo records describing each of 2122 * the running tasks. 2123 */ 2124 @Deprecated 2125 public List<RunningTaskInfo> getRunningTasks(int maxNum) 2126 throws SecurityException { 2127 try { 2128 return getService().getTasks(maxNum, 0); 2129 } catch (RemoteException e) { 2130 throw e.rethrowFromSystemServer(); 2131 } 2132 } 2133 2134 /** 2135 * Completely remove the given task. 2136 * 2137 * @param taskId Identifier of the task to be removed. 2138 * @return Returns true if the given task was found and removed. 2139 * 2140 * @hide 2141 */ 2142 public boolean removeTask(int taskId) throws SecurityException { 2143 try { 2144 return getService().removeTask(taskId); 2145 } catch (RemoteException e) { 2146 throw e.rethrowFromSystemServer(); 2147 } 2148 } 2149 2150 /** 2151 * Metadata related to the {@link TaskThumbnail}. 2152 * 2153 * @hide 2154 */ 2155 public static class TaskThumbnailInfo implements Parcelable { 2156 /** @hide */ 2157 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2158 private static final String ATTR_TASK_WIDTH = 2159 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2160 private static final String ATTR_TASK_HEIGHT = 2161 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2162 private static final String ATTR_SCREEN_ORIENTATION = 2163 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2164 2165 public int taskWidth; 2166 public int taskHeight; 2167 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2168 2169 public TaskThumbnailInfo() { 2170 // Do nothing 2171 } 2172 2173 private TaskThumbnailInfo(Parcel source) { 2174 readFromParcel(source); 2175 } 2176 2177 /** 2178 * Resets this info state to the initial state. 2179 * @hide 2180 */ 2181 public void reset() { 2182 taskWidth = 0; 2183 taskHeight = 0; 2184 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2185 } 2186 2187 /** 2188 * Copies from another ThumbnailInfo. 2189 */ 2190 public void copyFrom(TaskThumbnailInfo o) { 2191 taskWidth = o.taskWidth; 2192 taskHeight = o.taskHeight; 2193 screenOrientation = o.screenOrientation; 2194 } 2195 2196 /** @hide */ 2197 public void saveToXml(XmlSerializer out) throws IOException { 2198 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2199 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2200 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2201 } 2202 2203 /** @hide */ 2204 public void restoreFromXml(String attrName, String attrValue) { 2205 if (ATTR_TASK_WIDTH.equals(attrName)) { 2206 taskWidth = Integer.parseInt(attrValue); 2207 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2208 taskHeight = Integer.parseInt(attrValue); 2209 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2210 screenOrientation = Integer.parseInt(attrValue); 2211 } 2212 } 2213 2214 public int describeContents() { 2215 return 0; 2216 } 2217 2218 public void writeToParcel(Parcel dest, int flags) { 2219 dest.writeInt(taskWidth); 2220 dest.writeInt(taskHeight); 2221 dest.writeInt(screenOrientation); 2222 } 2223 2224 public void readFromParcel(Parcel source) { 2225 taskWidth = source.readInt(); 2226 taskHeight = source.readInt(); 2227 screenOrientation = source.readInt(); 2228 } 2229 2230 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2231 public TaskThumbnailInfo createFromParcel(Parcel source) { 2232 return new TaskThumbnailInfo(source); 2233 } 2234 public TaskThumbnailInfo[] newArray(int size) { 2235 return new TaskThumbnailInfo[size]; 2236 } 2237 }; 2238 } 2239 2240 /** @hide */ 2241 public static class TaskThumbnail implements Parcelable { 2242 public Bitmap mainThumbnail; 2243 public ParcelFileDescriptor thumbnailFileDescriptor; 2244 public TaskThumbnailInfo thumbnailInfo; 2245 2246 public TaskThumbnail() { 2247 } 2248 2249 private TaskThumbnail(Parcel source) { 2250 readFromParcel(source); 2251 } 2252 2253 public int describeContents() { 2254 if (thumbnailFileDescriptor != null) { 2255 return thumbnailFileDescriptor.describeContents(); 2256 } 2257 return 0; 2258 } 2259 2260 public void writeToParcel(Parcel dest, int flags) { 2261 if (mainThumbnail != null) { 2262 dest.writeInt(1); 2263 mainThumbnail.writeToParcel(dest, flags); 2264 } else { 2265 dest.writeInt(0); 2266 } 2267 if (thumbnailFileDescriptor != null) { 2268 dest.writeInt(1); 2269 thumbnailFileDescriptor.writeToParcel(dest, flags); 2270 } else { 2271 dest.writeInt(0); 2272 } 2273 if (thumbnailInfo != null) { 2274 dest.writeInt(1); 2275 thumbnailInfo.writeToParcel(dest, flags); 2276 } else { 2277 dest.writeInt(0); 2278 } 2279 } 2280 2281 public void readFromParcel(Parcel source) { 2282 if (source.readInt() != 0) { 2283 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2284 } else { 2285 mainThumbnail = null; 2286 } 2287 if (source.readInt() != 0) { 2288 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2289 } else { 2290 thumbnailFileDescriptor = null; 2291 } 2292 if (source.readInt() != 0) { 2293 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2294 } else { 2295 thumbnailInfo = null; 2296 } 2297 } 2298 2299 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2300 public TaskThumbnail createFromParcel(Parcel source) { 2301 return new TaskThumbnail(source); 2302 } 2303 public TaskThumbnail[] newArray(int size) { 2304 return new TaskThumbnail[size]; 2305 } 2306 }; 2307 } 2308 2309 /** 2310 * Represents a task snapshot. 2311 * @hide 2312 */ 2313 public static class TaskSnapshot implements Parcelable { 2314 2315 private final GraphicBuffer mSnapshot; 2316 private final int mOrientation; 2317 private final Rect mContentInsets; 2318 private final boolean mReducedResolution; 2319 private final float mScale; 2320 2321 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2322 boolean reducedResolution, float scale) { 2323 mSnapshot = snapshot; 2324 mOrientation = orientation; 2325 mContentInsets = new Rect(contentInsets); 2326 mReducedResolution = reducedResolution; 2327 mScale = scale; 2328 } 2329 2330 private TaskSnapshot(Parcel source) { 2331 mSnapshot = source.readParcelable(null /* classLoader */); 2332 mOrientation = source.readInt(); 2333 mContentInsets = source.readParcelable(null /* classLoader */); 2334 mReducedResolution = source.readBoolean(); 2335 mScale = source.readFloat(); 2336 } 2337 2338 /** 2339 * @return The graphic buffer representing the screenshot. 2340 */ 2341 public GraphicBuffer getSnapshot() { 2342 return mSnapshot; 2343 } 2344 2345 /** 2346 * @return The screen orientation the screenshot was taken in. 2347 */ 2348 public int getOrientation() { 2349 return mOrientation; 2350 } 2351 2352 /** 2353 * @return The system/content insets on the snapshot. These can be clipped off in order to 2354 * remove any areas behind system bars in the snapshot. 2355 */ 2356 public Rect getContentInsets() { 2357 return mContentInsets; 2358 } 2359 2360 /** 2361 * @return Whether this snapshot is a down-sampled version of the full resolution. 2362 */ 2363 public boolean isReducedResolution() { 2364 return mReducedResolution; 2365 } 2366 2367 /** 2368 * @return The scale this snapshot was taken in. 2369 */ 2370 public float getScale() { 2371 return mScale; 2372 } 2373 2374 @Override 2375 public int describeContents() { 2376 return 0; 2377 } 2378 2379 @Override 2380 public void writeToParcel(Parcel dest, int flags) { 2381 dest.writeParcelable(mSnapshot, 0); 2382 dest.writeInt(mOrientation); 2383 dest.writeParcelable(mContentInsets, 0); 2384 dest.writeBoolean(mReducedResolution); 2385 dest.writeFloat(mScale); 2386 } 2387 2388 @Override 2389 public String toString() { 2390 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2391 + " mContentInsets=" + mContentInsets.toShortString() 2392 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2393 } 2394 2395 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2396 public TaskSnapshot createFromParcel(Parcel source) { 2397 return new TaskSnapshot(source); 2398 } 2399 public TaskSnapshot[] newArray(int size) { 2400 return new TaskSnapshot[size]; 2401 } 2402 }; 2403 } 2404 2405 /** @hide */ 2406 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2407 try { 2408 return getService().getTaskThumbnail(id); 2409 } catch (RemoteException e) { 2410 throw e.rethrowFromSystemServer(); 2411 } 2412 } 2413 2414 /** @hide */ 2415 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2416 MOVE_TASK_WITH_HOME, 2417 MOVE_TASK_NO_USER_ACTION, 2418 }) 2419 @Retention(RetentionPolicy.SOURCE) 2420 public @interface MoveTaskFlags {} 2421 2422 /** 2423 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2424 * activity along with the task, so it is positioned immediately behind 2425 * the task. 2426 */ 2427 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2428 2429 /** 2430 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2431 * user-instigated action, so the current activity will not receive a 2432 * hint that the user is leaving. 2433 */ 2434 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2435 2436 /** 2437 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2438 * with a null options argument. 2439 * 2440 * @param taskId The identifier of the task to be moved, as found in 2441 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2442 * @param flags Additional operational flags. 2443 */ 2444 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2445 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2446 moveTaskToFront(taskId, flags, null); 2447 } 2448 2449 /** 2450 * Ask that the task associated with a given task ID be moved to the 2451 * front of the stack, so it is now visible to the user. 2452 * 2453 * @param taskId The identifier of the task to be moved, as found in 2454 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2455 * @param flags Additional operational flags. 2456 * @param options Additional options for the operation, either null or 2457 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2458 * Context.startActivity(Intent, Bundle)}. 2459 */ 2460 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2461 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2462 try { 2463 getService().moveTaskToFront(taskId, flags, options); 2464 } catch (RemoteException e) { 2465 throw e.rethrowFromSystemServer(); 2466 } 2467 } 2468 2469 /** 2470 * Information you can retrieve about a particular Service that is 2471 * currently running in the system. 2472 */ 2473 public static class RunningServiceInfo implements Parcelable { 2474 /** 2475 * The service component. 2476 */ 2477 public ComponentName service; 2478 2479 /** 2480 * If non-zero, this is the process the service is running in. 2481 */ 2482 public int pid; 2483 2484 /** 2485 * The UID that owns this service. 2486 */ 2487 public int uid; 2488 2489 /** 2490 * The name of the process this service runs in. 2491 */ 2492 public String process; 2493 2494 /** 2495 * Set to true if the service has asked to run as a foreground process. 2496 */ 2497 public boolean foreground; 2498 2499 /** 2500 * The time when the service was first made active, either by someone 2501 * starting or binding to it. This 2502 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2503 */ 2504 public long activeSince; 2505 2506 /** 2507 * Set to true if this service has been explicitly started. 2508 */ 2509 public boolean started; 2510 2511 /** 2512 * Number of clients connected to the service. 2513 */ 2514 public int clientCount; 2515 2516 /** 2517 * Number of times the service's process has crashed while the service 2518 * is running. 2519 */ 2520 public int crashCount; 2521 2522 /** 2523 * The time when there was last activity in the service (either 2524 * explicit requests to start it or clients binding to it). This 2525 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2526 */ 2527 public long lastActivityTime; 2528 2529 /** 2530 * If non-zero, this service is not currently running, but scheduled to 2531 * restart at the given time. 2532 */ 2533 public long restarting; 2534 2535 /** 2536 * Bit for {@link #flags}: set if this service has been 2537 * explicitly started. 2538 */ 2539 public static final int FLAG_STARTED = 1<<0; 2540 2541 /** 2542 * Bit for {@link #flags}: set if the service has asked to 2543 * run as a foreground process. 2544 */ 2545 public static final int FLAG_FOREGROUND = 1<<1; 2546 2547 /** 2548 * Bit for {@link #flags}: set if the service is running in a 2549 * core system process. 2550 */ 2551 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2552 2553 /** 2554 * Bit for {@link #flags}: set if the service is running in a 2555 * persistent process. 2556 */ 2557 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2558 2559 /** 2560 * Running flags. 2561 */ 2562 public int flags; 2563 2564 /** 2565 * For special services that are bound to by system code, this is 2566 * the package that holds the binding. 2567 */ 2568 public String clientPackage; 2569 2570 /** 2571 * For special services that are bound to by system code, this is 2572 * a string resource providing a user-visible label for who the 2573 * client is. 2574 */ 2575 public int clientLabel; 2576 2577 public RunningServiceInfo() { 2578 } 2579 2580 public int describeContents() { 2581 return 0; 2582 } 2583 2584 public void writeToParcel(Parcel dest, int flags) { 2585 ComponentName.writeToParcel(service, dest); 2586 dest.writeInt(pid); 2587 dest.writeInt(uid); 2588 dest.writeString(process); 2589 dest.writeInt(foreground ? 1 : 0); 2590 dest.writeLong(activeSince); 2591 dest.writeInt(started ? 1 : 0); 2592 dest.writeInt(clientCount); 2593 dest.writeInt(crashCount); 2594 dest.writeLong(lastActivityTime); 2595 dest.writeLong(restarting); 2596 dest.writeInt(this.flags); 2597 dest.writeString(clientPackage); 2598 dest.writeInt(clientLabel); 2599 } 2600 2601 public void readFromParcel(Parcel source) { 2602 service = ComponentName.readFromParcel(source); 2603 pid = source.readInt(); 2604 uid = source.readInt(); 2605 process = source.readString(); 2606 foreground = source.readInt() != 0; 2607 activeSince = source.readLong(); 2608 started = source.readInt() != 0; 2609 clientCount = source.readInt(); 2610 crashCount = source.readInt(); 2611 lastActivityTime = source.readLong(); 2612 restarting = source.readLong(); 2613 flags = source.readInt(); 2614 clientPackage = source.readString(); 2615 clientLabel = source.readInt(); 2616 } 2617 2618 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2619 public RunningServiceInfo createFromParcel(Parcel source) { 2620 return new RunningServiceInfo(source); 2621 } 2622 public RunningServiceInfo[] newArray(int size) { 2623 return new RunningServiceInfo[size]; 2624 } 2625 }; 2626 2627 private RunningServiceInfo(Parcel source) { 2628 readFromParcel(source); 2629 } 2630 } 2631 2632 /** 2633 * Return a list of the services that are currently running. 2634 * 2635 * <p><b>Note: this method is only intended for debugging or implementing 2636 * service management type user interfaces.</b></p> 2637 * 2638 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2639 * is no longer available to third party applications. For backwards compatibility, 2640 * it will still return the caller's own services. 2641 * 2642 * @param maxNum The maximum number of entries to return in the list. The 2643 * actual number returned may be smaller, depending on how many services 2644 * are running. 2645 * 2646 * @return Returns a list of RunningServiceInfo records describing each of 2647 * the running tasks. 2648 */ 2649 @Deprecated 2650 public List<RunningServiceInfo> getRunningServices(int maxNum) 2651 throws SecurityException { 2652 try { 2653 return getService() 2654 .getServices(maxNum, 0); 2655 } catch (RemoteException e) { 2656 throw e.rethrowFromSystemServer(); 2657 } 2658 } 2659 2660 /** 2661 * Returns a PendingIntent you can start to show a control panel for the 2662 * given running service. If the service does not have a control panel, 2663 * null is returned. 2664 */ 2665 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2666 throws SecurityException { 2667 try { 2668 return getService() 2669 .getRunningServiceControlPanel(service); 2670 } catch (RemoteException e) { 2671 throw e.rethrowFromSystemServer(); 2672 } 2673 } 2674 2675 /** 2676 * Information you can retrieve about the available memory through 2677 * {@link ActivityManager#getMemoryInfo}. 2678 */ 2679 public static class MemoryInfo implements Parcelable { 2680 /** 2681 * The available memory on the system. This number should not 2682 * be considered absolute: due to the nature of the kernel, a significant 2683 * portion of this memory is actually in use and needed for the overall 2684 * system to run well. 2685 */ 2686 public long availMem; 2687 2688 /** 2689 * The total memory accessible by the kernel. This is basically the 2690 * RAM size of the device, not including below-kernel fixed allocations 2691 * like DMA buffers, RAM for the baseband CPU, etc. 2692 */ 2693 public long totalMem; 2694 2695 /** 2696 * The threshold of {@link #availMem} at which we consider memory to be 2697 * low and start killing background services and other non-extraneous 2698 * processes. 2699 */ 2700 public long threshold; 2701 2702 /** 2703 * Set to true if the system considers itself to currently be in a low 2704 * memory situation. 2705 */ 2706 public boolean lowMemory; 2707 2708 /** @hide */ 2709 public long hiddenAppThreshold; 2710 /** @hide */ 2711 public long secondaryServerThreshold; 2712 /** @hide */ 2713 public long visibleAppThreshold; 2714 /** @hide */ 2715 public long foregroundAppThreshold; 2716 2717 public MemoryInfo() { 2718 } 2719 2720 public int describeContents() { 2721 return 0; 2722 } 2723 2724 public void writeToParcel(Parcel dest, int flags) { 2725 dest.writeLong(availMem); 2726 dest.writeLong(totalMem); 2727 dest.writeLong(threshold); 2728 dest.writeInt(lowMemory ? 1 : 0); 2729 dest.writeLong(hiddenAppThreshold); 2730 dest.writeLong(secondaryServerThreshold); 2731 dest.writeLong(visibleAppThreshold); 2732 dest.writeLong(foregroundAppThreshold); 2733 } 2734 2735 public void readFromParcel(Parcel source) { 2736 availMem = source.readLong(); 2737 totalMem = source.readLong(); 2738 threshold = source.readLong(); 2739 lowMemory = source.readInt() != 0; 2740 hiddenAppThreshold = source.readLong(); 2741 secondaryServerThreshold = source.readLong(); 2742 visibleAppThreshold = source.readLong(); 2743 foregroundAppThreshold = source.readLong(); 2744 } 2745 2746 public static final Creator<MemoryInfo> CREATOR 2747 = new Creator<MemoryInfo>() { 2748 public MemoryInfo createFromParcel(Parcel source) { 2749 return new MemoryInfo(source); 2750 } 2751 public MemoryInfo[] newArray(int size) { 2752 return new MemoryInfo[size]; 2753 } 2754 }; 2755 2756 private MemoryInfo(Parcel source) { 2757 readFromParcel(source); 2758 } 2759 } 2760 2761 /** 2762 * Return general information about the memory state of the system. This 2763 * can be used to help decide how to manage your own memory, though note 2764 * that polling is not recommended and 2765 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2766 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2767 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2768 * level of your process as needed, which gives a better hint for how to 2769 * manage its memory. 2770 */ 2771 public void getMemoryInfo(MemoryInfo outInfo) { 2772 try { 2773 getService().getMemoryInfo(outInfo); 2774 } catch (RemoteException e) { 2775 throw e.rethrowFromSystemServer(); 2776 } 2777 } 2778 2779 /** 2780 * Information you can retrieve about an ActivityStack in the system. 2781 * @hide 2782 */ 2783 public static class StackInfo implements Parcelable { 2784 public int stackId; 2785 public Rect bounds = new Rect(); 2786 public int[] taskIds; 2787 public String[] taskNames; 2788 public Rect[] taskBounds; 2789 public int[] taskUserIds; 2790 public ComponentName topActivity; 2791 public int displayId; 2792 public int userId; 2793 public boolean visible; 2794 // Index of the stack in the display's stack list, can be used for comparison of stack order 2795 public int position; 2796 2797 @Override 2798 public int describeContents() { 2799 return 0; 2800 } 2801 2802 @Override 2803 public void writeToParcel(Parcel dest, int flags) { 2804 dest.writeInt(stackId); 2805 dest.writeInt(bounds.left); 2806 dest.writeInt(bounds.top); 2807 dest.writeInt(bounds.right); 2808 dest.writeInt(bounds.bottom); 2809 dest.writeIntArray(taskIds); 2810 dest.writeStringArray(taskNames); 2811 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2812 dest.writeInt(boundsCount); 2813 for (int i = 0; i < boundsCount; i++) { 2814 dest.writeInt(taskBounds[i].left); 2815 dest.writeInt(taskBounds[i].top); 2816 dest.writeInt(taskBounds[i].right); 2817 dest.writeInt(taskBounds[i].bottom); 2818 } 2819 dest.writeIntArray(taskUserIds); 2820 dest.writeInt(displayId); 2821 dest.writeInt(userId); 2822 dest.writeInt(visible ? 1 : 0); 2823 dest.writeInt(position); 2824 if (topActivity != null) { 2825 dest.writeInt(1); 2826 topActivity.writeToParcel(dest, 0); 2827 } else { 2828 dest.writeInt(0); 2829 } 2830 } 2831 2832 public void readFromParcel(Parcel source) { 2833 stackId = source.readInt(); 2834 bounds = new Rect( 2835 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2836 taskIds = source.createIntArray(); 2837 taskNames = source.createStringArray(); 2838 final int boundsCount = source.readInt(); 2839 if (boundsCount > 0) { 2840 taskBounds = new Rect[boundsCount]; 2841 for (int i = 0; i < boundsCount; i++) { 2842 taskBounds[i] = new Rect(); 2843 taskBounds[i].set( 2844 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2845 } 2846 } else { 2847 taskBounds = null; 2848 } 2849 taskUserIds = source.createIntArray(); 2850 displayId = source.readInt(); 2851 userId = source.readInt(); 2852 visible = source.readInt() > 0; 2853 position = source.readInt(); 2854 if (source.readInt() > 0) { 2855 topActivity = ComponentName.readFromParcel(source); 2856 } 2857 } 2858 2859 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2860 @Override 2861 public StackInfo createFromParcel(Parcel source) { 2862 return new StackInfo(source); 2863 } 2864 @Override 2865 public StackInfo[] newArray(int size) { 2866 return new StackInfo[size]; 2867 } 2868 }; 2869 2870 public StackInfo() { 2871 } 2872 2873 private StackInfo(Parcel source) { 2874 readFromParcel(source); 2875 } 2876 2877 public String toString(String prefix) { 2878 StringBuilder sb = new StringBuilder(256); 2879 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2880 sb.append(" bounds="); sb.append(bounds.toShortString()); 2881 sb.append(" displayId="); sb.append(displayId); 2882 sb.append(" userId="); sb.append(userId); 2883 sb.append("\n"); 2884 prefix = prefix + " "; 2885 for (int i = 0; i < taskIds.length; ++i) { 2886 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2887 sb.append(": "); sb.append(taskNames[i]); 2888 if (taskBounds != null) { 2889 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2890 } 2891 sb.append(" userId=").append(taskUserIds[i]); 2892 sb.append(" visible=").append(visible); 2893 if (topActivity != null) { 2894 sb.append(" topActivity=").append(topActivity); 2895 } 2896 sb.append("\n"); 2897 } 2898 return sb.toString(); 2899 } 2900 2901 @Override 2902 public String toString() { 2903 return toString(""); 2904 } 2905 } 2906 2907 /** 2908 * @hide 2909 */ 2910 @RequiresPermission(anyOf={Manifest.permission.CLEAR_APP_USER_DATA, 2911 Manifest.permission.ACCESS_INSTANT_APPS}) 2912 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2913 try { 2914 return getService().clearApplicationUserData(packageName, 2915 observer, UserHandle.myUserId()); 2916 } catch (RemoteException e) { 2917 throw e.rethrowFromSystemServer(); 2918 } 2919 } 2920 2921 /** 2922 * Permits an application to erase its own data from disk. This is equivalent to 2923 * the user choosing to clear the app's data from within the device settings UI. It 2924 * erases all dynamic data associated with the app -- its private data and data in its 2925 * private area on external storage -- but does not remove the installed application 2926 * itself, nor any OBB files. 2927 * 2928 * @return {@code true} if the application successfully requested that the application's 2929 * data be erased; {@code false} otherwise. 2930 */ 2931 public boolean clearApplicationUserData() { 2932 return clearApplicationUserData(mContext.getPackageName(), null); 2933 } 2934 2935 2936 /** 2937 * Permits an application to get the persistent URI permissions granted to another. 2938 * 2939 * <p>Typically called by Settings. 2940 * 2941 * @param packageName application to look for the granted permissions 2942 * @return list of granted URI permissions 2943 * 2944 * @hide 2945 */ 2946 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2947 try { 2948 return getService().getGrantedUriPermissions(packageName, 2949 UserHandle.myUserId()); 2950 } catch (RemoteException e) { 2951 throw e.rethrowFromSystemServer(); 2952 } 2953 } 2954 2955 /** 2956 * Permits an application to clear the persistent URI permissions granted to another. 2957 * 2958 * <p>Typically called by Settings. 2959 * 2960 * @param packageName application to clear its granted permissions 2961 * 2962 * @hide 2963 */ 2964 public void clearGrantedUriPermissions(String packageName) { 2965 try { 2966 getService().clearGrantedUriPermissions(packageName, 2967 UserHandle.myUserId()); 2968 } catch (RemoteException e) { 2969 throw e.rethrowFromSystemServer(); 2970 } 2971 } 2972 2973 /** 2974 * Information you can retrieve about any processes that are in an error condition. 2975 */ 2976 public static class ProcessErrorStateInfo implements Parcelable { 2977 /** 2978 * Condition codes 2979 */ 2980 public static final int NO_ERROR = 0; 2981 public static final int CRASHED = 1; 2982 public static final int NOT_RESPONDING = 2; 2983 2984 /** 2985 * The condition that the process is in. 2986 */ 2987 public int condition; 2988 2989 /** 2990 * The process name in which the crash or error occurred. 2991 */ 2992 public String processName; 2993 2994 /** 2995 * The pid of this process; 0 if none 2996 */ 2997 public int pid; 2998 2999 /** 3000 * The kernel user-ID that has been assigned to this process; 3001 * currently this is not a unique ID (multiple applications can have 3002 * the same uid). 3003 */ 3004 public int uid; 3005 3006 /** 3007 * The activity name associated with the error, if known. May be null. 3008 */ 3009 public String tag; 3010 3011 /** 3012 * A short message describing the error condition. 3013 */ 3014 public String shortMsg; 3015 3016 /** 3017 * A long message describing the error condition. 3018 */ 3019 public String longMsg; 3020 3021 /** 3022 * The stack trace where the error originated. May be null. 3023 */ 3024 public String stackTrace; 3025 3026 /** 3027 * to be deprecated: This value will always be null. 3028 */ 3029 public byte[] crashData = null; 3030 3031 public ProcessErrorStateInfo() { 3032 } 3033 3034 @Override 3035 public int describeContents() { 3036 return 0; 3037 } 3038 3039 @Override 3040 public void writeToParcel(Parcel dest, int flags) { 3041 dest.writeInt(condition); 3042 dest.writeString(processName); 3043 dest.writeInt(pid); 3044 dest.writeInt(uid); 3045 dest.writeString(tag); 3046 dest.writeString(shortMsg); 3047 dest.writeString(longMsg); 3048 dest.writeString(stackTrace); 3049 } 3050 3051 public void readFromParcel(Parcel source) { 3052 condition = source.readInt(); 3053 processName = source.readString(); 3054 pid = source.readInt(); 3055 uid = source.readInt(); 3056 tag = source.readString(); 3057 shortMsg = source.readString(); 3058 longMsg = source.readString(); 3059 stackTrace = source.readString(); 3060 } 3061 3062 public static final Creator<ProcessErrorStateInfo> CREATOR = 3063 new Creator<ProcessErrorStateInfo>() { 3064 public ProcessErrorStateInfo createFromParcel(Parcel source) { 3065 return new ProcessErrorStateInfo(source); 3066 } 3067 public ProcessErrorStateInfo[] newArray(int size) { 3068 return new ProcessErrorStateInfo[size]; 3069 } 3070 }; 3071 3072 private ProcessErrorStateInfo(Parcel source) { 3073 readFromParcel(source); 3074 } 3075 } 3076 3077 /** 3078 * Returns a list of any processes that are currently in an error condition. The result 3079 * will be null if all processes are running properly at this time. 3080 * 3081 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 3082 * current error conditions (it will not return an empty list). This list ordering is not 3083 * specified. 3084 */ 3085 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 3086 try { 3087 return getService().getProcessesInErrorState(); 3088 } catch (RemoteException e) { 3089 throw e.rethrowFromSystemServer(); 3090 } 3091 } 3092 3093 /** 3094 * Information you can retrieve about a running process. 3095 */ 3096 public static class RunningAppProcessInfo implements Parcelable { 3097 /** 3098 * The name of the process that this object is associated with 3099 */ 3100 public String processName; 3101 3102 /** 3103 * The pid of this process; 0 if none 3104 */ 3105 public int pid; 3106 3107 /** 3108 * The user id of this process. 3109 */ 3110 public int uid; 3111 3112 /** 3113 * All packages that have been loaded into the process. 3114 */ 3115 public String pkgList[]; 3116 3117 /** 3118 * Constant for {@link #flags}: this is an app that is unable to 3119 * correctly save its state when going to the background, 3120 * so it can not be killed while in the background. 3121 * @hide 3122 */ 3123 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 3124 3125 /** 3126 * Constant for {@link #flags}: this process is associated with a 3127 * persistent system app. 3128 * @hide 3129 */ 3130 public static final int FLAG_PERSISTENT = 1<<1; 3131 3132 /** 3133 * Constant for {@link #flags}: this process is associated with a 3134 * persistent system app. 3135 * @hide 3136 */ 3137 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 3138 3139 /** 3140 * Flags of information. May be any of 3141 * {@link #FLAG_CANT_SAVE_STATE}. 3142 * @hide 3143 */ 3144 public int flags; 3145 3146 /** 3147 * Last memory trim level reported to the process: corresponds to 3148 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 3149 * ComponentCallbacks2.onTrimMemory(int)}. 3150 */ 3151 public int lastTrimLevel; 3152 3153 /** @hide */ 3154 @IntDef(prefix = { "IMPORTANCE_" }, value = { 3155 IMPORTANCE_FOREGROUND, 3156 IMPORTANCE_FOREGROUND_SERVICE, 3157 IMPORTANCE_TOP_SLEEPING, 3158 IMPORTANCE_VISIBLE, 3159 IMPORTANCE_PERCEPTIBLE, 3160 IMPORTANCE_CANT_SAVE_STATE, 3161 IMPORTANCE_SERVICE, 3162 IMPORTANCE_CACHED, 3163 IMPORTANCE_GONE, 3164 }) 3165 @Retention(RetentionPolicy.SOURCE) 3166 public @interface Importance {} 3167 3168 /** 3169 * Constant for {@link #importance}: This process is running the 3170 * foreground UI; that is, it is the thing currently at the top of the screen 3171 * that the user is interacting with. 3172 */ 3173 public static final int IMPORTANCE_FOREGROUND = 100; 3174 3175 /** 3176 * Constant for {@link #importance}: This process is running a foreground 3177 * service, for example to perform music playback even while the user is 3178 * not immediately in the app. This generally indicates that the process 3179 * is doing something the user actively cares about. 3180 */ 3181 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3182 3183 /** 3184 * Constant for {@link #importance}: This process is running the foreground 3185 * UI, but the device is asleep so it is not visible to the user. This means 3186 * the user is not really aware of the process, because they can not see or 3187 * interact with it, but it is quite important because it what they expect to 3188 * return to once unlocking the device. 3189 */ 3190 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3191 3192 /** 3193 * Constant for {@link #importance}: This process is running something 3194 * that is actively visible to the user, though not in the immediate 3195 * foreground. This may be running a window that is behind the current 3196 * foreground (so paused and with its state saved, not interacting with 3197 * the user, but visible to them to some degree); it may also be running 3198 * other services under the system's control that it inconsiders important. 3199 */ 3200 public static final int IMPORTANCE_VISIBLE = 200; 3201 3202 /** 3203 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 3204 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3205 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 3206 * 3207 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 3208 * on Android versions below {@link Build.VERSION_CODES#O}. 3209 * 3210 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 3211 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3212 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3213 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 3214 */ 3215 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 3216 3217 /** 3218 * Constant for {@link #importance}: This process is not something the user 3219 * is directly aware of, but is otherwise perceptible to them to some degree. 3220 */ 3221 public static final int IMPORTANCE_PERCEPTIBLE = 230; 3222 3223 /** 3224 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 3225 * this wrong value 3226 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3227 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 3228 * 3229 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 3230 * on Android versions below {@link Build.VERSION_CODES#O}. 3231 * 3232 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 3233 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3234 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3235 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 3236 * 3237 * @hide 3238 */ 3239 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 3240 3241 /** 3242 * Constant for {@link #importance}: This process is running an 3243 * application that can not save its state, and thus can't be killed 3244 * while in the background. 3245 * @hide 3246 */ 3247 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 3248 3249 /** 3250 * Constant for {@link #importance}: This process is contains services 3251 * that should remain running. These are background services apps have 3252 * started, not something the user is aware of, so they may be killed by 3253 * the system relatively freely (though it is generally desired that they 3254 * stay running as long as they want to). 3255 */ 3256 public static final int IMPORTANCE_SERVICE = 300; 3257 3258 /** 3259 * Constant for {@link #importance}: This process process contains 3260 * cached code that is expendable, not actively running any app components 3261 * we care about. 3262 */ 3263 public static final int IMPORTANCE_CACHED = 400; 3264 3265 /** 3266 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3267 */ 3268 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3269 3270 /** 3271 * Constant for {@link #importance}: This process is empty of any 3272 * actively running code. 3273 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3274 */ 3275 @Deprecated 3276 public static final int IMPORTANCE_EMPTY = 500; 3277 3278 /** 3279 * Constant for {@link #importance}: This process does not exist. 3280 */ 3281 public static final int IMPORTANCE_GONE = 1000; 3282 3283 /** 3284 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 3285 * will be passed to a client, use {@link #procStateToImportanceForClient}. 3286 * @hide 3287 */ 3288 public static @Importance int procStateToImportance(int procState) { 3289 if (procState == PROCESS_STATE_NONEXISTENT) { 3290 return IMPORTANCE_GONE; 3291 } else if (procState >= PROCESS_STATE_HOME) { 3292 return IMPORTANCE_CACHED; 3293 } else if (procState >= PROCESS_STATE_SERVICE) { 3294 return IMPORTANCE_SERVICE; 3295 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3296 return IMPORTANCE_CANT_SAVE_STATE; 3297 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 3298 return IMPORTANCE_PERCEPTIBLE; 3299 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3300 return IMPORTANCE_VISIBLE; 3301 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3302 return IMPORTANCE_TOP_SLEEPING; 3303 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3304 return IMPORTANCE_FOREGROUND_SERVICE; 3305 } else { 3306 return IMPORTANCE_FOREGROUND; 3307 } 3308 } 3309 3310 /** 3311 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 3312 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 3313 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 3314 * client's target SDK < {@link VERSION_CODES#O}. 3315 * @hide 3316 */ 3317 public static @Importance int procStateToImportanceForClient(int procState, 3318 Context clientContext) { 3319 return procStateToImportanceForTargetSdk(procState, 3320 clientContext.getApplicationInfo().targetSdkVersion); 3321 } 3322 3323 /** 3324 * See {@link #procStateToImportanceForClient}. 3325 * @hide 3326 */ 3327 public static @Importance int procStateToImportanceForTargetSdk(int procState, 3328 int targetSdkVersion) { 3329 final int importance = procStateToImportance(procState); 3330 3331 // For pre O apps, convert to the old, wrong values. 3332 if (targetSdkVersion < VERSION_CODES.O) { 3333 switch (importance) { 3334 case IMPORTANCE_PERCEPTIBLE: 3335 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3336 case IMPORTANCE_CANT_SAVE_STATE: 3337 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3338 } 3339 } 3340 return importance; 3341 } 3342 3343 /** @hide */ 3344 public static int importanceToProcState(@Importance int importance) { 3345 if (importance == IMPORTANCE_GONE) { 3346 return PROCESS_STATE_NONEXISTENT; 3347 } else if (importance >= IMPORTANCE_CACHED) { 3348 return PROCESS_STATE_HOME; 3349 } else if (importance >= IMPORTANCE_SERVICE) { 3350 return PROCESS_STATE_SERVICE; 3351 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3352 return PROCESS_STATE_HEAVY_WEIGHT; 3353 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3354 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3355 } else if (importance >= IMPORTANCE_VISIBLE) { 3356 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3357 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3358 return PROCESS_STATE_TOP_SLEEPING; 3359 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3360 return PROCESS_STATE_FOREGROUND_SERVICE; 3361 } else { 3362 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3363 } 3364 } 3365 3366 /** 3367 * The relative importance level that the system places on this process. 3368 * These constants are numbered so that "more important" values are 3369 * always smaller than "less important" values. 3370 */ 3371 public @Importance int importance; 3372 3373 /** 3374 * An additional ordering within a particular {@link #importance} 3375 * category, providing finer-grained information about the relative 3376 * utility of processes within a category. This number means nothing 3377 * except that a smaller values are more recently used (and thus 3378 * more important). Currently an LRU value is only maintained for 3379 * the {@link #IMPORTANCE_CACHED} category, though others may 3380 * be maintained in the future. 3381 */ 3382 public int lru; 3383 3384 /** 3385 * Constant for {@link #importanceReasonCode}: nothing special has 3386 * been specified for the reason for this level. 3387 */ 3388 public static final int REASON_UNKNOWN = 0; 3389 3390 /** 3391 * Constant for {@link #importanceReasonCode}: one of the application's 3392 * content providers is being used by another process. The pid of 3393 * the client process is in {@link #importanceReasonPid} and the 3394 * target provider in this process is in 3395 * {@link #importanceReasonComponent}. 3396 */ 3397 public static final int REASON_PROVIDER_IN_USE = 1; 3398 3399 /** 3400 * Constant for {@link #importanceReasonCode}: one of the application's 3401 * content providers is being used by another process. The pid of 3402 * the client process is in {@link #importanceReasonPid} and the 3403 * target provider in this process is in 3404 * {@link #importanceReasonComponent}. 3405 */ 3406 public static final int REASON_SERVICE_IN_USE = 2; 3407 3408 /** 3409 * The reason for {@link #importance}, if any. 3410 */ 3411 public int importanceReasonCode; 3412 3413 /** 3414 * For the specified values of {@link #importanceReasonCode}, this 3415 * is the process ID of the other process that is a client of this 3416 * process. This will be 0 if no other process is using this one. 3417 */ 3418 public int importanceReasonPid; 3419 3420 /** 3421 * For the specified values of {@link #importanceReasonCode}, this 3422 * is the name of the component that is being used in this process. 3423 */ 3424 public ComponentName importanceReasonComponent; 3425 3426 /** 3427 * When {@link #importanceReasonPid} is non-0, this is the importance 3428 * of the other pid. @hide 3429 */ 3430 public int importanceReasonImportance; 3431 3432 /** 3433 * Current process state, as per PROCESS_STATE_* constants. 3434 * @hide 3435 */ 3436 public int processState; 3437 3438 public RunningAppProcessInfo() { 3439 importance = IMPORTANCE_FOREGROUND; 3440 importanceReasonCode = REASON_UNKNOWN; 3441 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3442 } 3443 3444 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3445 processName = pProcessName; 3446 pid = pPid; 3447 pkgList = pArr; 3448 } 3449 3450 public int describeContents() { 3451 return 0; 3452 } 3453 3454 public void writeToParcel(Parcel dest, int flags) { 3455 dest.writeString(processName); 3456 dest.writeInt(pid); 3457 dest.writeInt(uid); 3458 dest.writeStringArray(pkgList); 3459 dest.writeInt(this.flags); 3460 dest.writeInt(lastTrimLevel); 3461 dest.writeInt(importance); 3462 dest.writeInt(lru); 3463 dest.writeInt(importanceReasonCode); 3464 dest.writeInt(importanceReasonPid); 3465 ComponentName.writeToParcel(importanceReasonComponent, dest); 3466 dest.writeInt(importanceReasonImportance); 3467 dest.writeInt(processState); 3468 } 3469 3470 public void readFromParcel(Parcel source) { 3471 processName = source.readString(); 3472 pid = source.readInt(); 3473 uid = source.readInt(); 3474 pkgList = source.readStringArray(); 3475 flags = source.readInt(); 3476 lastTrimLevel = source.readInt(); 3477 importance = source.readInt(); 3478 lru = source.readInt(); 3479 importanceReasonCode = source.readInt(); 3480 importanceReasonPid = source.readInt(); 3481 importanceReasonComponent = ComponentName.readFromParcel(source); 3482 importanceReasonImportance = source.readInt(); 3483 processState = source.readInt(); 3484 } 3485 3486 public static final Creator<RunningAppProcessInfo> CREATOR = 3487 new Creator<RunningAppProcessInfo>() { 3488 public RunningAppProcessInfo createFromParcel(Parcel source) { 3489 return new RunningAppProcessInfo(source); 3490 } 3491 public RunningAppProcessInfo[] newArray(int size) { 3492 return new RunningAppProcessInfo[size]; 3493 } 3494 }; 3495 3496 private RunningAppProcessInfo(Parcel source) { 3497 readFromParcel(source); 3498 } 3499 } 3500 3501 /** 3502 * Returns a list of application processes installed on external media 3503 * that are running on the device. 3504 * 3505 * <p><b>Note: this method is only intended for debugging or building 3506 * a user-facing process management UI.</b></p> 3507 * 3508 * @return Returns a list of ApplicationInfo records, or null if none 3509 * This list ordering is not specified. 3510 * @hide 3511 */ 3512 public List<ApplicationInfo> getRunningExternalApplications() { 3513 try { 3514 return getService().getRunningExternalApplications(); 3515 } catch (RemoteException e) { 3516 throw e.rethrowFromSystemServer(); 3517 } 3518 } 3519 3520 /** 3521 * Sets the memory trim mode for a process and schedules a memory trim operation. 3522 * 3523 * <p><b>Note: this method is only intended for testing framework.</b></p> 3524 * 3525 * @return Returns true if successful. 3526 * @hide 3527 */ 3528 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3529 try { 3530 return getService().setProcessMemoryTrimLevel(process, userId, 3531 level); 3532 } catch (RemoteException e) { 3533 throw e.rethrowFromSystemServer(); 3534 } 3535 } 3536 3537 /** 3538 * Returns a list of application processes that are running on the device. 3539 * 3540 * <p><b>Note: this method is only intended for debugging or building 3541 * a user-facing process management UI.</b></p> 3542 * 3543 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3544 * running processes (it will not return an empty list). This list ordering is not 3545 * specified. 3546 */ 3547 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3548 try { 3549 return getService().getRunningAppProcesses(); 3550 } catch (RemoteException e) { 3551 throw e.rethrowFromSystemServer(); 3552 } 3553 } 3554 3555 /** 3556 * Return the importance of a given package name, 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 package has code running inside of. 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 getPackageImportance(String packageName) { 3566 try { 3567 int procState = getService().getPackageProcessState(packageName, 3568 mContext.getOpPackageName()); 3569 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3570 } catch (RemoteException e) { 3571 throw e.rethrowFromSystemServer(); 3572 } 3573 } 3574 3575 /** 3576 * Return the importance of a given uid, based on the processes that are 3577 * currently running. The return value is one of the importance constants defined 3578 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3579 * processes that this uid has running. If there are no processes 3580 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3581 * @hide 3582 */ 3583 @SystemApi @TestApi 3584 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3585 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3586 try { 3587 int procState = getService().getUidProcessState(uid, 3588 mContext.getOpPackageName()); 3589 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3590 } catch (RemoteException e) { 3591 throw e.rethrowFromSystemServer(); 3592 } 3593 } 3594 3595 /** 3596 * Callback to get reports about changes to the importance of a uid. Use with 3597 * {@link #addOnUidImportanceListener}. 3598 * @hide 3599 */ 3600 @SystemApi @TestApi 3601 public interface OnUidImportanceListener { 3602 /** 3603 * The importance if a given uid has changed. Will be one of the importance 3604 * values in {@link RunningAppProcessInfo}; 3605 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3606 * when the uid is no longer running at all. This callback will happen on a thread 3607 * from a thread pool, not the main UI thread. 3608 * @param uid The uid whose importance has changed. 3609 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3610 */ 3611 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3612 } 3613 3614 /** 3615 * Start monitoring changes to the imoportance of uids running in the system. 3616 * @param listener The listener callback that will receive change reports. 3617 * @param importanceCutpoint The level of importance in which the caller is interested 3618 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3619 * is used here, you will receive a call each time a uids importance transitions between 3620 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3621 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3622 * 3623 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3624 * permission to use this feature.</p> 3625 * 3626 * @throws IllegalArgumentException If the listener is already registered. 3627 * @throws SecurityException If the caller does not hold 3628 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3629 * @hide 3630 */ 3631 @SystemApi @TestApi 3632 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3633 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3634 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3635 synchronized (this) { 3636 if (mImportanceListeners.containsKey(listener)) { 3637 throw new IllegalArgumentException("Listener already registered: " + listener); 3638 } 3639 // TODO: implement the cut point in the system process to avoid IPCs. 3640 UidObserver observer = new UidObserver(listener, mContext); 3641 try { 3642 getService().registerUidObserver(observer, 3643 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3644 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3645 mContext.getOpPackageName()); 3646 } catch (RemoteException e) { 3647 throw e.rethrowFromSystemServer(); 3648 } 3649 mImportanceListeners.put(listener, observer); 3650 } 3651 } 3652 3653 /** 3654 * Remove an importance listener that was previously registered with 3655 * {@link #addOnUidImportanceListener}. 3656 * 3657 * @throws IllegalArgumentException If the listener is not registered. 3658 * @hide 3659 */ 3660 @SystemApi @TestApi 3661 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3662 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3663 synchronized (this) { 3664 UidObserver observer = mImportanceListeners.remove(listener); 3665 if (observer == null) { 3666 throw new IllegalArgumentException("Listener not registered: " + listener); 3667 } 3668 try { 3669 getService().unregisterUidObserver(observer); 3670 } catch (RemoteException e) { 3671 throw e.rethrowFromSystemServer(); 3672 } 3673 } 3674 } 3675 3676 /** 3677 * Return global memory state information for the calling process. This 3678 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3679 * only fields that will be filled in are 3680 * {@link RunningAppProcessInfo#pid}, 3681 * {@link RunningAppProcessInfo#uid}, 3682 * {@link RunningAppProcessInfo#lastTrimLevel}, 3683 * {@link RunningAppProcessInfo#importance}, 3684 * {@link RunningAppProcessInfo#lru}, and 3685 * {@link RunningAppProcessInfo#importanceReasonCode}. 3686 */ 3687 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3688 try { 3689 getService().getMyMemoryState(outState); 3690 } catch (RemoteException e) { 3691 throw e.rethrowFromSystemServer(); 3692 } 3693 } 3694 3695 /** 3696 * Return information about the memory usage of one or more processes. 3697 * 3698 * <p><b>Note: this method is only intended for debugging or building 3699 * a user-facing process management UI.</b></p> 3700 * 3701 * @param pids The pids of the processes whose memory usage is to be 3702 * retrieved. 3703 * @return Returns an array of memory information, one for each 3704 * requested pid. 3705 */ 3706 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3707 try { 3708 return getService().getProcessMemoryInfo(pids); 3709 } catch (RemoteException e) { 3710 throw e.rethrowFromSystemServer(); 3711 } 3712 } 3713 3714 /** 3715 * @deprecated This is now just a wrapper for 3716 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3717 * is no longer available to applications because it allows them to 3718 * break other applications by removing their alarms, stopping their 3719 * services, etc. 3720 */ 3721 @Deprecated 3722 public void restartPackage(String packageName) { 3723 killBackgroundProcesses(packageName); 3724 } 3725 3726 /** 3727 * Have the system immediately kill all background processes associated 3728 * with the given package. This is the same as the kernel killing those 3729 * processes to reclaim memory; the system will take care of restarting 3730 * these processes in the future as needed. 3731 * 3732 * @param packageName The name of the package whose processes are to 3733 * be killed. 3734 */ 3735 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3736 public void killBackgroundProcesses(String packageName) { 3737 try { 3738 getService().killBackgroundProcesses(packageName, 3739 UserHandle.myUserId()); 3740 } catch (RemoteException e) { 3741 throw e.rethrowFromSystemServer(); 3742 } 3743 } 3744 3745 /** 3746 * Kills the specified UID. 3747 * @param uid The UID to kill. 3748 * @param reason The reason for the kill. 3749 * 3750 * @hide 3751 */ 3752 @SystemApi 3753 @RequiresPermission(Manifest.permission.KILL_UID) 3754 public void killUid(int uid, String reason) { 3755 try { 3756 getService().killUid(UserHandle.getAppId(uid), 3757 UserHandle.getUserId(uid), reason); 3758 } catch (RemoteException e) { 3759 throw e.rethrowFromSystemServer(); 3760 } 3761 } 3762 3763 /** 3764 * Have the system perform a force stop of everything associated with 3765 * the given application package. All processes that share its uid 3766 * will be killed, all services it has running stopped, all activities 3767 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3768 * broadcast will be sent, so that any of its registered alarms can 3769 * be stopped, notifications removed, etc. 3770 * 3771 * <p>You must hold the permission 3772 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3773 * call this method. 3774 * 3775 * @param packageName The name of the package to be stopped. 3776 * @param userId The user for which the running package is to be stopped. 3777 * 3778 * @hide This is not available to third party applications due to 3779 * it allowing them to break other applications by stopping their 3780 * services, removing their alarms, etc. 3781 */ 3782 public void forceStopPackageAsUser(String packageName, int userId) { 3783 try { 3784 getService().forceStopPackage(packageName, userId); 3785 } catch (RemoteException e) { 3786 throw e.rethrowFromSystemServer(); 3787 } 3788 } 3789 3790 /** 3791 * @see #forceStopPackageAsUser(String, int) 3792 * @hide 3793 */ 3794 @SystemApi 3795 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3796 public void forceStopPackage(String packageName) { 3797 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3798 } 3799 3800 /** 3801 * Get the device configuration attributes. 3802 */ 3803 public ConfigurationInfo getDeviceConfigurationInfo() { 3804 try { 3805 return getService().getDeviceConfigurationInfo(); 3806 } catch (RemoteException e) { 3807 throw e.rethrowFromSystemServer(); 3808 } 3809 } 3810 3811 /** 3812 * Get the preferred density of icons for the launcher. This is used when 3813 * custom drawables are created (e.g., for shortcuts). 3814 * 3815 * @return density in terms of DPI 3816 */ 3817 public int getLauncherLargeIconDensity() { 3818 final Resources res = mContext.getResources(); 3819 final int density = res.getDisplayMetrics().densityDpi; 3820 final int sw = res.getConfiguration().smallestScreenWidthDp; 3821 3822 if (sw < 600) { 3823 // Smaller than approx 7" tablets, use the regular icon size. 3824 return density; 3825 } 3826 3827 switch (density) { 3828 case DisplayMetrics.DENSITY_LOW: 3829 return DisplayMetrics.DENSITY_MEDIUM; 3830 case DisplayMetrics.DENSITY_MEDIUM: 3831 return DisplayMetrics.DENSITY_HIGH; 3832 case DisplayMetrics.DENSITY_TV: 3833 return DisplayMetrics.DENSITY_XHIGH; 3834 case DisplayMetrics.DENSITY_HIGH: 3835 return DisplayMetrics.DENSITY_XHIGH; 3836 case DisplayMetrics.DENSITY_XHIGH: 3837 return DisplayMetrics.DENSITY_XXHIGH; 3838 case DisplayMetrics.DENSITY_XXHIGH: 3839 return DisplayMetrics.DENSITY_XHIGH * 2; 3840 default: 3841 // The density is some abnormal value. Return some other 3842 // abnormal value that is a reasonable scaling of it. 3843 return (int)((density*1.5f)+.5f); 3844 } 3845 } 3846 3847 /** 3848 * Get the preferred launcher icon size. This is used when custom drawables 3849 * are created (e.g., for shortcuts). 3850 * 3851 * @return dimensions of square icons in terms of pixels 3852 */ 3853 public int getLauncherLargeIconSize() { 3854 return getLauncherLargeIconSizeInner(mContext); 3855 } 3856 3857 static int getLauncherLargeIconSizeInner(Context context) { 3858 final Resources res = context.getResources(); 3859 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3860 final int sw = res.getConfiguration().smallestScreenWidthDp; 3861 3862 if (sw < 600) { 3863 // Smaller than approx 7" tablets, use the regular icon size. 3864 return size; 3865 } 3866 3867 final int density = res.getDisplayMetrics().densityDpi; 3868 3869 switch (density) { 3870 case DisplayMetrics.DENSITY_LOW: 3871 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3872 case DisplayMetrics.DENSITY_MEDIUM: 3873 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3874 case DisplayMetrics.DENSITY_TV: 3875 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3876 case DisplayMetrics.DENSITY_HIGH: 3877 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3878 case DisplayMetrics.DENSITY_XHIGH: 3879 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3880 case DisplayMetrics.DENSITY_XXHIGH: 3881 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3882 default: 3883 // The density is some abnormal value. Return some other 3884 // abnormal value that is a reasonable scaling of it. 3885 return (int)((size*1.5f) + .5f); 3886 } 3887 } 3888 3889 /** 3890 * Returns "true" if the user interface is currently being messed with 3891 * by a monkey. 3892 */ 3893 public static boolean isUserAMonkey() { 3894 try { 3895 return getService().isUserAMonkey(); 3896 } catch (RemoteException e) { 3897 throw e.rethrowFromSystemServer(); 3898 } 3899 } 3900 3901 /** 3902 * Returns "true" if device is running in a test harness. 3903 */ 3904 public static boolean isRunningInTestHarness() { 3905 return SystemProperties.getBoolean("ro.test_harness", false); 3906 } 3907 3908 /** 3909 * Returns the launch count of each installed package. 3910 * 3911 * @hide 3912 */ 3913 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3914 try { 3915 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3916 ServiceManager.getService("usagestats")); 3917 if (usageStatsService == null) { 3918 return new HashMap<String, Integer>(); 3919 } 3920 3921 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3922 ActivityThread.currentPackageName()); 3923 if (allPkgUsageStats == null) { 3924 return new HashMap<String, Integer>(); 3925 } 3926 3927 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3928 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3929 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3930 } 3931 3932 return launchCounts; 3933 } catch (RemoteException e) { 3934 Log.w(TAG, "Could not query launch counts", e); 3935 return new HashMap<String, Integer>(); 3936 } 3937 }*/ 3938 3939 /** @hide */ 3940 public static int checkComponentPermission(String permission, int uid, 3941 int owningUid, boolean exported) { 3942 // Root, system server get to do everything. 3943 final int appId = UserHandle.getAppId(uid); 3944 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3945 return PackageManager.PERMISSION_GRANTED; 3946 } 3947 // Isolated processes don't get any permissions. 3948 if (UserHandle.isIsolated(uid)) { 3949 return PackageManager.PERMISSION_DENIED; 3950 } 3951 // If there is a uid that owns whatever is being accessed, it has 3952 // blanket access to it regardless of the permissions it requires. 3953 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3954 return PackageManager.PERMISSION_GRANTED; 3955 } 3956 // If the target is not exported, then nobody else can get to it. 3957 if (!exported) { 3958 /* 3959 RuntimeException here = new RuntimeException("here"); 3960 here.fillInStackTrace(); 3961 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3962 here); 3963 */ 3964 return PackageManager.PERMISSION_DENIED; 3965 } 3966 if (permission == null) { 3967 return PackageManager.PERMISSION_GRANTED; 3968 } 3969 try { 3970 return AppGlobals.getPackageManager() 3971 .checkUidPermission(permission, uid); 3972 } catch (RemoteException e) { 3973 throw e.rethrowFromSystemServer(); 3974 } 3975 } 3976 3977 /** @hide */ 3978 public static int checkUidPermission(String permission, int uid) { 3979 try { 3980 return AppGlobals.getPackageManager() 3981 .checkUidPermission(permission, uid); 3982 } catch (RemoteException e) { 3983 throw e.rethrowFromSystemServer(); 3984 } 3985 } 3986 3987 /** 3988 * @hide 3989 * Helper for dealing with incoming user arguments to system service calls. 3990 * Takes care of checking permissions and converting USER_CURRENT to the 3991 * actual current user. 3992 * 3993 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3994 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3995 * @param userId The user id argument supplied by the caller -- this is the user 3996 * they want to run as. 3997 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3998 * to get a USER_ALL returned and deal with it correctly. If false, 3999 * an exception will be thrown if USER_ALL is supplied. 4000 * @param requireFull If true, the caller must hold 4001 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 4002 * different user than their current process; otherwise they must hold 4003 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 4004 * @param name Optional textual name of the incoming call; only for generating error messages. 4005 * @param callerPackage Optional package name of caller; only for error messages. 4006 * 4007 * @return Returns the user ID that the call should run as. Will always be a concrete 4008 * user number, unless <var>allowAll</var> is true in which case it could also be 4009 * USER_ALL. 4010 */ 4011 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 4012 boolean allowAll, boolean requireFull, String name, String callerPackage) { 4013 if (UserHandle.getUserId(callingUid) == userId) { 4014 return userId; 4015 } 4016 try { 4017 return getService().handleIncomingUser(callingPid, 4018 callingUid, userId, allowAll, requireFull, name, callerPackage); 4019 } catch (RemoteException e) { 4020 throw e.rethrowFromSystemServer(); 4021 } 4022 } 4023 4024 /** 4025 * Gets the userId of the current foreground user. Requires system permissions. 4026 * @hide 4027 */ 4028 @SystemApi 4029 @RequiresPermission(anyOf = { 4030 "android.permission.INTERACT_ACROSS_USERS", 4031 "android.permission.INTERACT_ACROSS_USERS_FULL" 4032 }) 4033 public static int getCurrentUser() { 4034 UserInfo ui; 4035 try { 4036 ui = getService().getCurrentUser(); 4037 return ui != null ? ui.id : 0; 4038 } catch (RemoteException e) { 4039 throw e.rethrowFromSystemServer(); 4040 } 4041 } 4042 4043 /** 4044 * @param userid the user's id. Zero indicates the default user. 4045 * @hide 4046 */ 4047 public boolean switchUser(int userid) { 4048 try { 4049 return getService().switchUser(userid); 4050 } catch (RemoteException e) { 4051 throw e.rethrowFromSystemServer(); 4052 } 4053 } 4054 4055 /** 4056 * Logs out current current foreground user by switching to the system user and stopping the 4057 * user being switched from. 4058 * @hide 4059 */ 4060 public static void logoutCurrentUser() { 4061 int currentUser = ActivityManager.getCurrentUser(); 4062 if (currentUser != UserHandle.USER_SYSTEM) { 4063 try { 4064 getService().switchUser(UserHandle.USER_SYSTEM); 4065 getService().stopUser(currentUser, /* force= */ false, null); 4066 } catch (RemoteException e) { 4067 e.rethrowFromSystemServer(); 4068 } 4069 } 4070 } 4071 4072 /** {@hide} */ 4073 public static final int FLAG_OR_STOPPED = 1 << 0; 4074 /** {@hide} */ 4075 public static final int FLAG_AND_LOCKED = 1 << 1; 4076 /** {@hide} */ 4077 public static final int FLAG_AND_UNLOCKED = 1 << 2; 4078 /** {@hide} */ 4079 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 4080 4081 /** 4082 * Return whether the given user is actively running. This means that 4083 * the user is in the "started" state, not "stopped" -- it is currently 4084 * allowed to run code through scheduled alarms, receiving broadcasts, 4085 * etc. A started user may be either the current foreground user or a 4086 * background user; the result here does not distinguish between the two. 4087 * @param userId the user's id. Zero indicates the default user. 4088 * @hide 4089 */ 4090 public boolean isUserRunning(int userId) { 4091 try { 4092 return getService().isUserRunning(userId, 0); 4093 } catch (RemoteException e) { 4094 throw e.rethrowFromSystemServer(); 4095 } 4096 } 4097 4098 /** {@hide} */ 4099 public boolean isVrModePackageEnabled(ComponentName component) { 4100 try { 4101 return getService().isVrModePackageEnabled(component); 4102 } catch (RemoteException e) { 4103 throw e.rethrowFromSystemServer(); 4104 } 4105 } 4106 4107 /** 4108 * Perform a system dump of various state associated with the given application 4109 * package name. This call blocks while the dump is being performed, so should 4110 * not be done on a UI thread. The data will be written to the given file 4111 * descriptor as text. 4112 * @param fd The file descriptor that the dump should be written to. The file 4113 * descriptor is <em>not</em> closed by this function; the caller continues to 4114 * own it. 4115 * @param packageName The name of the package that is to be dumped. 4116 */ 4117 @RequiresPermission(Manifest.permission.DUMP) 4118 public void dumpPackageState(FileDescriptor fd, String packageName) { 4119 dumpPackageStateStatic(fd, packageName); 4120 } 4121 4122 /** 4123 * @hide 4124 */ 4125 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 4126 FileOutputStream fout = new FileOutputStream(fd); 4127 PrintWriter pw = new FastPrintWriter(fout); 4128 dumpService(pw, fd, "package", new String[] { packageName }); 4129 pw.println(); 4130 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 4131 "-a", "package", packageName }); 4132 pw.println(); 4133 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 4134 pw.println(); 4135 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 4136 pw.println(); 4137 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 4138 pw.println(); 4139 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 4140 pw.flush(); 4141 } 4142 4143 /** 4144 * @hide 4145 */ 4146 public static boolean isSystemReady() { 4147 if (!sSystemReady) { 4148 if (ActivityThread.isSystem()) { 4149 sSystemReady = 4150 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 4151 } else { 4152 // Since this is being called from outside system server, system should be 4153 // ready by now. 4154 sSystemReady = true; 4155 } 4156 } 4157 return sSystemReady; 4158 } 4159 4160 /** 4161 * @hide 4162 */ 4163 public static void broadcastStickyIntent(Intent intent, int userId) { 4164 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 4165 } 4166 4167 /** 4168 * Convenience for sending a sticky broadcast. For internal use only. 4169 * 4170 * @hide 4171 */ 4172 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 4173 try { 4174 getService().broadcastIntent( 4175 null, intent, null, null, Activity.RESULT_OK, null, null, 4176 null /*permission*/, appOp, null, false, true, userId); 4177 } catch (RemoteException ex) { 4178 } 4179 } 4180 4181 /** 4182 * @hide 4183 */ 4184 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 4185 String tag) { 4186 try { 4187 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 4188 sourceUid, sourcePkg, tag); 4189 } catch (RemoteException ex) { 4190 } 4191 } 4192 4193 /** 4194 * @hide 4195 */ 4196 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 4197 try { 4198 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4199 } catch (RemoteException ex) { 4200 } 4201 } 4202 4203 /** 4204 * @hide 4205 */ 4206 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 4207 try { 4208 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4209 } catch (RemoteException ex) { 4210 } 4211 } 4212 4213 /** 4214 * @hide 4215 */ 4216 public static IActivityManager getService() { 4217 return IActivityManagerSingleton.get(); 4218 } 4219 4220 private static final Singleton<IActivityManager> IActivityManagerSingleton = 4221 new Singleton<IActivityManager>() { 4222 @Override 4223 protected IActivityManager create() { 4224 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 4225 final IActivityManager am = IActivityManager.Stub.asInterface(b); 4226 return am; 4227 } 4228 }; 4229 4230 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 4231 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 4232 IBinder service = ServiceManager.checkService(name); 4233 if (service == null) { 4234 pw.println(" (Service not found)"); 4235 return; 4236 } 4237 TransferPipe tp = null; 4238 try { 4239 pw.flush(); 4240 tp = new TransferPipe(); 4241 tp.setBufferPrefix(" "); 4242 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 4243 tp.go(fd, 10000); 4244 } catch (Throwable e) { 4245 if (tp != null) { 4246 tp.kill(); 4247 } 4248 pw.println("Failure dumping service:"); 4249 e.printStackTrace(pw); 4250 } 4251 } 4252 4253 /** 4254 * Request that the system start watching for the calling process to exceed a pss 4255 * size as given here. Once called, the system will look for any occasions where it 4256 * sees the associated process with a larger pss size and, when this happens, automatically 4257 * pull a heap dump from it and allow the user to share the data. Note that this request 4258 * continues running even if the process is killed and restarted. To remove the watch, 4259 * use {@link #clearWatchHeapLimit()}. 4260 * 4261 * <p>This API only work if the calling process has been marked as 4262 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4263 * (userdebug or eng) build.</p> 4264 * 4265 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4266 * handle heap limit reports themselves.</p> 4267 * 4268 * @param pssSize The size in bytes to set the limit at. 4269 */ 4270 public void setWatchHeapLimit(long pssSize) { 4271 try { 4272 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4273 mContext.getPackageName()); 4274 } catch (RemoteException e) { 4275 throw e.rethrowFromSystemServer(); 4276 } 4277 } 4278 4279 /** 4280 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4281 * If your package has an activity handling this action, it will be launched with the 4282 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4283 * match the activty must support this action and a MIME type of "*/*". 4284 */ 4285 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4286 4287 /** 4288 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4289 */ 4290 public void clearWatchHeapLimit() { 4291 try { 4292 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4293 } catch (RemoteException e) { 4294 throw e.rethrowFromSystemServer(); 4295 } 4296 } 4297 4298 /** 4299 * @hide 4300 */ 4301 public void startLockTaskMode(int taskId) { 4302 try { 4303 getService().startLockTaskModeById(taskId); 4304 } catch (RemoteException e) { 4305 throw e.rethrowFromSystemServer(); 4306 } 4307 } 4308 4309 /** 4310 * @hide 4311 */ 4312 public void stopLockTaskMode() { 4313 try { 4314 getService().stopLockTaskMode(); 4315 } catch (RemoteException e) { 4316 throw e.rethrowFromSystemServer(); 4317 } 4318 } 4319 4320 /** 4321 * Return whether currently in lock task mode. When in this mode 4322 * no new tasks can be created or switched to. 4323 * 4324 * @see Activity#startLockTask() 4325 * 4326 * @deprecated Use {@link #getLockTaskModeState} instead. 4327 */ 4328 @Deprecated 4329 public boolean isInLockTaskMode() { 4330 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4331 } 4332 4333 /** 4334 * Return the current state of task locking. The three possible outcomes 4335 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4336 * and {@link #LOCK_TASK_MODE_PINNED}. 4337 * 4338 * @see Activity#startLockTask() 4339 */ 4340 public int getLockTaskModeState() { 4341 try { 4342 return getService().getLockTaskModeState(); 4343 } catch (RemoteException e) { 4344 throw e.rethrowFromSystemServer(); 4345 } 4346 } 4347 4348 /** 4349 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4350 * thread can be a VR thread in a process at a time, and that thread may be subject to 4351 * restrictions on the amount of time it can run. 4352 * 4353 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4354 * method will return to normal operation, and calling this method will do nothing while 4355 * persistent VR mode is enabled. 4356 * 4357 * To reset the VR thread for an application, a tid of 0 can be passed. 4358 * 4359 * @see android.os.Process#myTid() 4360 * @param tid tid of the VR thread 4361 */ 4362 public static void setVrThread(int tid) { 4363 try { 4364 getService().setVrThread(tid); 4365 } catch (RemoteException e) { 4366 // pass 4367 } 4368 } 4369 4370 /** 4371 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4372 * beyond a single process. Only one thread can be a 4373 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4374 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4375 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4376 * persistent VR thread loses its new scheduling priority; this method must be called again to 4377 * set the persistent thread. 4378 * 4379 * To reset the persistent VR thread, a tid of 0 can be passed. 4380 * 4381 * @see android.os.Process#myTid() 4382 * @param tid tid of the VR thread 4383 * @hide 4384 */ 4385 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4386 public static void setPersistentVrThread(int tid) { 4387 try { 4388 getService().setPersistentVrThread(tid); 4389 } catch (RemoteException e) { 4390 // pass 4391 } 4392 } 4393 4394 /** 4395 * The AppTask allows you to manage your own application's tasks. 4396 * See {@link android.app.ActivityManager#getAppTasks()} 4397 */ 4398 public static class AppTask { 4399 private IAppTask mAppTaskImpl; 4400 4401 /** @hide */ 4402 public AppTask(IAppTask task) { 4403 mAppTaskImpl = task; 4404 } 4405 4406 /** 4407 * Finishes all activities in this task and removes it from the recent tasks list. 4408 */ 4409 public void finishAndRemoveTask() { 4410 try { 4411 mAppTaskImpl.finishAndRemoveTask(); 4412 } catch (RemoteException e) { 4413 throw e.rethrowFromSystemServer(); 4414 } 4415 } 4416 4417 /** 4418 * Get the RecentTaskInfo associated with this task. 4419 * 4420 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4421 */ 4422 public RecentTaskInfo getTaskInfo() { 4423 try { 4424 return mAppTaskImpl.getTaskInfo(); 4425 } catch (RemoteException e) { 4426 throw e.rethrowFromSystemServer(); 4427 } 4428 } 4429 4430 /** 4431 * Bring this task to the foreground. If it contains activities, they will be 4432 * brought to the foreground with it and their instances re-created if needed. 4433 * If it doesn't contain activities, the root activity of the task will be 4434 * re-launched. 4435 */ 4436 public void moveToFront() { 4437 try { 4438 mAppTaskImpl.moveToFront(); 4439 } catch (RemoteException e) { 4440 throw e.rethrowFromSystemServer(); 4441 } 4442 } 4443 4444 /** 4445 * Start an activity in this task. Brings the task to the foreground. If this task 4446 * is not currently active (that is, its id < 0), then a new activity for the given 4447 * Intent will be launched as the root of the task and the task brought to the 4448 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4449 * an activity to launch in a new task, then a new activity for the given Intent will 4450 * be launched on top of the task and the task brought to the foreground. If this 4451 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4452 * or would otherwise be launched in to a new task, then the activity not launched but 4453 * this task be brought to the foreground and a new intent delivered to the top 4454 * activity if appropriate. 4455 * 4456 * <p>In other words, you generally want to use an Intent here that does not specify 4457 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4458 * and let the system do the right thing.</p> 4459 * 4460 * @param intent The Intent describing the new activity to be launched on the task. 4461 * @param options Optional launch options. 4462 * 4463 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4464 */ 4465 public void startActivity(Context context, Intent intent, Bundle options) { 4466 ActivityThread thread = ActivityThread.currentActivityThread(); 4467 thread.getInstrumentation().execStartActivityFromAppTask(context, 4468 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4469 } 4470 4471 /** 4472 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4473 * Intent of this AppTask. 4474 * 4475 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4476 * be set; otherwise, it will be cleared. 4477 */ 4478 public void setExcludeFromRecents(boolean exclude) { 4479 try { 4480 mAppTaskImpl.setExcludeFromRecents(exclude); 4481 } catch (RemoteException e) { 4482 throw e.rethrowFromSystemServer(); 4483 } 4484 } 4485 } 4486 } 4487