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.pm.ActivityInfo; 28 import android.content.res.Configuration; 29 import android.graphics.Canvas; 30 import android.graphics.GraphicBuffer; 31 import android.graphics.Matrix; 32 import android.graphics.Point; 33 import android.os.BatteryStats; 34 import android.os.Build; 35 import android.os.Build.VERSION_CODES; 36 import android.os.IBinder; 37 import android.os.ParcelFileDescriptor; 38 39 import com.android.internal.app.procstats.ProcessStats; 40 import com.android.internal.os.RoSystemProperties; 41 import com.android.internal.os.TransferPipe; 42 import com.android.internal.util.FastPrintWriter; 43 import com.android.server.LocalServices; 44 45 import android.content.ComponentName; 46 import android.content.Context; 47 import android.content.Intent; 48 import android.content.UriPermission; 49 import android.content.pm.ApplicationInfo; 50 import android.content.pm.ConfigurationInfo; 51 import android.content.pm.IPackageDataObserver; 52 import android.content.pm.PackageManager; 53 import android.content.pm.ParceledListSlice; 54 import android.content.pm.UserInfo; 55 import android.content.res.Resources; 56 import android.graphics.Bitmap; 57 import android.graphics.Color; 58 import android.graphics.Rect; 59 import android.os.Bundle; 60 import android.os.Debug; 61 import android.os.Handler; 62 import android.os.Parcel; 63 import android.os.Parcelable; 64 import android.os.Process; 65 import android.os.RemoteException; 66 import android.os.ServiceManager; 67 import android.os.SystemProperties; 68 import android.os.UserHandle; 69 import android.text.TextUtils; 70 import android.util.ArrayMap; 71 import android.util.DisplayMetrics; 72 import android.util.Singleton; 73 import android.util.Size; 74 75 import org.xmlpull.v1.XmlSerializer; 76 77 import java.io.FileDescriptor; 78 import java.io.FileOutputStream; 79 import java.io.IOException; 80 import java.io.PrintWriter; 81 import java.lang.annotation.Retention; 82 import java.lang.annotation.RetentionPolicy; 83 import java.util.ArrayList; 84 import java.util.List; 85 86 /** 87 * <p> 88 * This class gives information about, and interacts 89 * with, activities, services, and the containing 90 * process. 91 * </p> 92 * 93 * <p> 94 * A number of the methods in this class are for 95 * debugging or informational purposes and they should 96 * not be used to affect any runtime behavior of 97 * your app. These methods are called out as such in 98 * the method level documentation. 99 * </p> 100 * 101 *<p> 102 * Most application developers should not have the need to 103 * use this class, most of whose methods are for specialized 104 * use cases. However, a few methods are more broadly applicable. 105 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 106 * enables your app to detect whether it is running on a low-memory device, 107 * and behave accordingly. 108 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 109 * is for apps with reset-data functionality. 110 * </p> 111 * 112 * <p> 113 * In some special use cases, where an app interacts with 114 * its Task stack, the app may use the 115 * {@link android.app.ActivityManager.AppTask} and 116 * {@link android.app.ActivityManager.RecentTaskInfo} inner 117 * classes. However, in general, the methods in this class should 118 * be used for testing and debugging purposes only. 119 * </p> 120 */ 121 @SystemService(Context.ACTIVITY_SERVICE) 122 public class ActivityManager { 123 private static String TAG = "ActivityManager"; 124 125 private static int gMaxRecentTasks = -1; 126 127 private final Context mContext; 128 129 private static volatile boolean sSystemReady = false; 130 131 132 private static final int FIRST_START_FATAL_ERROR_CODE = -100; 133 private static final int LAST_START_FATAL_ERROR_CODE = -1; 134 private static final int FIRST_START_SUCCESS_CODE = 0; 135 private static final int LAST_START_SUCCESS_CODE = 99; 136 private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; 137 private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; 138 139 /** 140 * System property to enable task snapshots. 141 * @hide 142 */ 143 public final static boolean ENABLE_TASK_SNAPSHOTS; 144 145 static { 146 ENABLE_TASK_SNAPSHOTS = SystemProperties.getBoolean("persist.enable_task_snapshots", true); 147 } 148 149 static final class UidObserver extends IUidObserver.Stub { 150 final OnUidImportanceListener mListener; 151 final Context mContext; 152 153 UidObserver(OnUidImportanceListener listener, Context clientContext) { 154 mListener = listener; 155 mContext = clientContext; 156 } 157 158 @Override 159 public void onUidStateChanged(int uid, int procState, long procStateSeq) { 160 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient( 161 procState, mContext)); 162 } 163 164 @Override 165 public void onUidGone(int uid, boolean disabled) { 166 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 167 } 168 169 @Override 170 public void onUidActive(int uid) { 171 } 172 173 @Override 174 public void onUidIdle(int uid, boolean disabled) { 175 } 176 } 177 178 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 179 180 /** 181 * Defines acceptable types of bugreports. 182 * @hide 183 */ 184 @Retention(RetentionPolicy.SOURCE) 185 @IntDef({ 186 BUGREPORT_OPTION_FULL, 187 BUGREPORT_OPTION_INTERACTIVE, 188 BUGREPORT_OPTION_REMOTE, 189 BUGREPORT_OPTION_WEAR, 190 BUGREPORT_OPTION_TELEPHONY 191 }) 192 public @interface BugreportMode {} 193 /** 194 * Takes a bugreport without user interference (and hence causing less 195 * interference to the system), but includes all sections. 196 * @hide 197 */ 198 public static final int BUGREPORT_OPTION_FULL = 0; 199 /** 200 * Allows user to monitor progress and enter additional data; might not include all 201 * sections. 202 * @hide 203 */ 204 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 205 /** 206 * Takes a bugreport requested remotely by administrator of the Device Owner app, 207 * not the device's user. 208 * @hide 209 */ 210 public static final int BUGREPORT_OPTION_REMOTE = 2; 211 /** 212 * Takes a bugreport on a wearable device. 213 * @hide 214 */ 215 public static final int BUGREPORT_OPTION_WEAR = 3; 216 217 /** 218 * Takes a lightweight version of bugreport that only includes a few, urgent sections 219 * used to report telephony bugs. 220 * @hide 221 */ 222 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 223 224 /** 225 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 226 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 227 * uninstalled in lieu of the declaring one. The package named here must be 228 * signed with the same certificate as the one declaring the {@code <meta-data>}. 229 */ 230 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 231 232 // NOTE: Before adding a new start result, please reference the defined ranges to ensure the 233 // result is properly categorized. 234 235 /** 236 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 237 * @hide 238 */ 239 public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; 240 241 /** 242 * Result for IActivityManager.startVoiceActivity: active session does not match 243 * the requesting token. 244 * @hide 245 */ 246 public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; 247 248 /** 249 * Result for IActivityManager.startActivity: trying to start a background user 250 * activity that shouldn't be displayed for all users. 251 * @hide 252 */ 253 public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; 254 255 /** 256 * Result for IActivityManager.startActivity: trying to start an activity under voice 257 * control when that activity does not support the VOICE category. 258 * @hide 259 */ 260 public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; 261 262 /** 263 * Result for IActivityManager.startActivity: an error where the 264 * start had to be canceled. 265 * @hide 266 */ 267 public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; 268 269 /** 270 * Result for IActivityManager.startActivity: an error where the 271 * thing being started is not an activity. 272 * @hide 273 */ 274 public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; 275 276 /** 277 * Result for IActivityManager.startActivity: an error where the 278 * caller does not have permission to start the activity. 279 * @hide 280 */ 281 public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; 282 283 /** 284 * Result for IActivityManager.startActivity: an error where the 285 * caller has requested both to forward a result and to receive 286 * a result. 287 * @hide 288 */ 289 public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; 290 291 /** 292 * Result for IActivityManager.startActivity: an error where the 293 * requested class is not found. 294 * @hide 295 */ 296 public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; 297 298 /** 299 * Result for IActivityManager.startActivity: an error where the 300 * given Intent could not be resolved to an activity. 301 * @hide 302 */ 303 public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; 304 305 /** 306 * Result for IActivityManager.startAssistantActivity: active session is currently hidden. 307 * @hide 308 */ 309 public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; 310 311 /** 312 * Result for IActivityManager.startAssistantActivity: active session does not match 313 * the requesting token. 314 * @hide 315 */ 316 public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; 317 318 /** 319 * Result for IActivityManaqer.startActivity: the activity was started 320 * successfully as normal. 321 * @hide 322 */ 323 public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; 324 325 /** 326 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 327 * be executed if it is the recipient, and that is indeed the case. 328 * @hide 329 */ 330 public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; 331 332 /** 333 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 334 * a task was simply brought to the foreground. 335 * @hide 336 */ 337 public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; 338 339 /** 340 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 341 * the given Intent was given to the existing top activity. 342 * @hide 343 */ 344 public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; 345 346 /** 347 * Result for IActivityManaqer.startActivity: request was canceled because 348 * app switches are temporarily canceled to ensure the user's last request 349 * (such as pressing home) is performed. 350 * @hide 351 */ 352 public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; 353 354 /** 355 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 356 * while in Lock Task Mode. 357 * @hide 358 */ 359 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 360 FIRST_START_NON_FATAL_ERROR_CODE + 1; 361 362 /** 363 * Flag for IActivityManaqer.startActivity: do special start mode where 364 * a new activity is launched only if it is needed. 365 * @hide 366 */ 367 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 368 369 /** 370 * Flag for IActivityManaqer.startActivity: launch the app for 371 * debugging. 372 * @hide 373 */ 374 public static final int START_FLAG_DEBUG = 1<<1; 375 376 /** 377 * Flag for IActivityManaqer.startActivity: launch the app for 378 * allocation tracking. 379 * @hide 380 */ 381 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 382 383 /** 384 * Flag for IActivityManaqer.startActivity: launch the app with 385 * native debugging support. 386 * @hide 387 */ 388 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 389 390 /** 391 * Result for IActivityManaqer.broadcastIntent: success! 392 * @hide 393 */ 394 public static final int BROADCAST_SUCCESS = 0; 395 396 /** 397 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 398 * a sticky intent without appropriate permission. 399 * @hide 400 */ 401 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 402 403 /** 404 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 405 * to a stopped user. Fail. 406 * @hide 407 */ 408 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 409 410 /** 411 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 412 * for a sendBroadcast operation. 413 * @hide 414 */ 415 public static final int INTENT_SENDER_BROADCAST = 1; 416 417 /** 418 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 419 * for a startActivity operation. 420 * @hide 421 */ 422 public static final int INTENT_SENDER_ACTIVITY = 2; 423 424 /** 425 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 426 * for an activity result operation. 427 * @hide 428 */ 429 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 430 431 /** 432 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 433 * for a startService operation. 434 * @hide 435 */ 436 public static final int INTENT_SENDER_SERVICE = 4; 437 438 /** 439 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 440 * for a startForegroundService operation. 441 * @hide 442 */ 443 public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; 444 445 /** @hide User operation call: success! */ 446 public static final int USER_OP_SUCCESS = 0; 447 448 /** @hide User operation call: given user id is not known. */ 449 public static final int USER_OP_UNKNOWN_USER = -1; 450 451 /** @hide User operation call: given user id is the current user, can't be stopped. */ 452 public static final int USER_OP_IS_CURRENT = -2; 453 454 /** @hide User operation call: system user can't be stopped. */ 455 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 456 457 /** @hide User operation call: one of related users cannot be stopped. */ 458 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 459 460 /** @hide Not a real process state. */ 461 public static final int PROCESS_STATE_UNKNOWN = -1; 462 463 /** @hide Process is a persistent system process. */ 464 public static final int PROCESS_STATE_PERSISTENT = 0; 465 466 /** @hide Process is a persistent system process and is doing UI. */ 467 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 468 469 /** @hide Process is hosting the current top activities. Note that this covers 470 * all activities that are visible to the user. */ 471 public static final int PROCESS_STATE_TOP = 2; 472 473 /** @hide Process is hosting a foreground service due to a system binding. */ 474 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 475 476 /** @hide Process is hosting a foreground service. */ 477 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 478 479 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 480 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 481 482 /** @hide Process is important to the user, and something they are aware of. */ 483 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 484 485 /** @hide Process is important to the user, but not something they are aware of. */ 486 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 487 488 /** @hide Process is in the background transient so we will try to keep running. */ 489 public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 8; 490 491 /** @hide Process is in the background running a backup/restore operation. */ 492 public static final int PROCESS_STATE_BACKUP = 9; 493 494 /** @hide Process is in the background, but it can't restore its state so we want 495 * to try to avoid killing it. */ 496 public static final int PROCESS_STATE_HEAVY_WEIGHT = 10; 497 498 /** @hide Process is in the background running a service. Unlike oom_adj, this level 499 * is used for both the normal running in background state and the executing 500 * operations state. */ 501 public static final int PROCESS_STATE_SERVICE = 11; 502 503 /** @hide Process is in the background running a receiver. Note that from the 504 * perspective of oom_adj receivers run at a higher foreground level, but for our 505 * prioritization here that is not necessary and putting them below services means 506 * many fewer changes in some process states as they receive broadcasts. */ 507 public static final int PROCESS_STATE_RECEIVER = 12; 508 509 /** @hide Process is in the background but hosts the home activity. */ 510 public static final int PROCESS_STATE_HOME = 13; 511 512 /** @hide Process is in the background but hosts the last shown activity. */ 513 public static final int PROCESS_STATE_LAST_ACTIVITY = 14; 514 515 /** @hide Process is being cached for later use and contains activities. */ 516 public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; 517 518 /** @hide Process is being cached for later use and is a client of another cached 519 * process that contains activities. */ 520 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; 521 522 /** @hide Process is being cached for later use and is empty. */ 523 public static final int PROCESS_STATE_CACHED_EMPTY = 17; 524 525 /** @hide Process does not exist. */ 526 public static final int PROCESS_STATE_NONEXISTENT = 18; 527 528 /** @hide The lowest process state number */ 529 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 530 531 /** @hide The highest process state number */ 532 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 533 534 /** @hide Should this process state be considered a background state? */ 535 public static final boolean isProcStateBackground(int procState) { 536 return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; 537 } 538 539 /** @hide requestType for assist context: only basic information. */ 540 public static final int ASSIST_CONTEXT_BASIC = 0; 541 542 /** @hide requestType for assist context: generate full AssistStructure. */ 543 public static final int ASSIST_CONTEXT_FULL = 1; 544 545 /** @hide requestType for assist context: generate full AssistStructure for autofill. */ 546 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 547 548 /** @hide Flag for registerUidObserver: report changes in process state. */ 549 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 550 551 /** @hide Flag for registerUidObserver: report uid gone. */ 552 public static final int UID_OBSERVER_GONE = 1<<1; 553 554 /** @hide Flag for registerUidObserver: report uid has become idle. */ 555 public static final int UID_OBSERVER_IDLE = 1<<2; 556 557 /** @hide Flag for registerUidObserver: report uid has become active. */ 558 public static final int UID_OBSERVER_ACTIVE = 1<<3; 559 560 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ 561 public static final int APP_START_MODE_NORMAL = 0; 562 563 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ 564 public static final int APP_START_MODE_DELAYED = 1; 565 566 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with 567 * rigid errors (throwing exception). */ 568 public static final int APP_START_MODE_DELAYED_RIGID = 2; 569 570 /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending 571 * launches; this is the mode for ephemeral apps. */ 572 public static final int APP_START_MODE_DISABLED = 3; 573 574 /** 575 * Lock task mode is not active. 576 */ 577 public static final int LOCK_TASK_MODE_NONE = 0; 578 579 /** 580 * Full lock task mode is active. 581 */ 582 public static final int LOCK_TASK_MODE_LOCKED = 1; 583 584 /** 585 * App pinning mode is active. 586 */ 587 public static final int LOCK_TASK_MODE_PINNED = 2; 588 589 Point mAppTaskThumbnailSize; 590 591 /*package*/ ActivityManager(Context context, Handler handler) { 592 mContext = context; 593 } 594 595 /** 596 * Returns whether the launch was successful. 597 * @hide 598 */ 599 public static final boolean isStartResultSuccessful(int result) { 600 return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; 601 } 602 603 /** 604 * Returns whether the launch result was a fatal error. 605 * @hide 606 */ 607 public static final boolean isStartResultFatalError(int result) { 608 return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; 609 } 610 611 /** 612 * Screen compatibility mode: the application most always run in 613 * compatibility mode. 614 * @hide 615 */ 616 public static final int COMPAT_MODE_ALWAYS = -1; 617 618 /** 619 * Screen compatibility mode: the application can never run in 620 * compatibility mode. 621 * @hide 622 */ 623 public static final int COMPAT_MODE_NEVER = -2; 624 625 /** 626 * Screen compatibility mode: unknown. 627 * @hide 628 */ 629 public static final int COMPAT_MODE_UNKNOWN = -3; 630 631 /** 632 * Screen compatibility mode: the application currently has compatibility 633 * mode disabled. 634 * @hide 635 */ 636 public static final int COMPAT_MODE_DISABLED = 0; 637 638 /** 639 * Screen compatibility mode: the application currently has compatibility 640 * mode enabled. 641 * @hide 642 */ 643 public static final int COMPAT_MODE_ENABLED = 1; 644 645 /** 646 * Screen compatibility mode: request to toggle the application's 647 * compatibility mode. 648 * @hide 649 */ 650 public static final int COMPAT_MODE_TOGGLE = 2; 651 652 /** @hide */ 653 public static class StackId { 654 /** Invalid stack ID. */ 655 public static final int INVALID_STACK_ID = -1; 656 657 /** First static stack ID. */ 658 public static final int FIRST_STATIC_STACK_ID = 0; 659 660 /** Home activity stack ID. */ 661 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 662 663 /** ID of stack where fullscreen activities are normally launched into. */ 664 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 665 666 /** ID of stack where freeform/resized activities are normally launched into. */ 667 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 668 669 /** ID of stack that occupies a dedicated region of the screen. */ 670 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 671 672 /** ID of stack that always on top (always visible) when it exist. */ 673 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 674 675 /** ID of stack that contains the Recents activity. */ 676 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 677 678 /** ID of stack that contains activities launched by the assistant. */ 679 public static final int ASSISTANT_STACK_ID = RECENTS_STACK_ID + 1; 680 681 /** Last static stack stack ID. */ 682 public static final int LAST_STATIC_STACK_ID = ASSISTANT_STACK_ID; 683 684 /** Start of ID range used by stacks that are created dynamically. */ 685 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 686 687 public static boolean isStaticStack(int stackId) { 688 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 689 } 690 691 public static boolean isDynamicStack(int stackId) { 692 return stackId >= FIRST_DYNAMIC_STACK_ID; 693 } 694 695 /** 696 * Returns true if the activities contained in the input stack display a shadow around 697 * their border. 698 */ 699 public static boolean hasWindowShadow(int stackId) { 700 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 701 } 702 703 /** 704 * Returns true if the activities contained in the input stack display a decor view. 705 */ 706 public static boolean hasWindowDecor(int stackId) { 707 return stackId == FREEFORM_WORKSPACE_STACK_ID; 708 } 709 710 /** 711 * Returns true if the tasks contained in the stack can be resized independently of the 712 * stack. 713 */ 714 public static boolean isTaskResizeAllowed(int stackId) { 715 return stackId == FREEFORM_WORKSPACE_STACK_ID; 716 } 717 718 /** Returns true if the task bounds should persist across power cycles. */ 719 public static boolean persistTaskBounds(int stackId) { 720 return stackId == FREEFORM_WORKSPACE_STACK_ID; 721 } 722 723 /** 724 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 725 */ 726 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 727 return stackId == PINNED_STACK_ID || stackId == ASSISTANT_STACK_ID; 728 } 729 730 /** 731 * Returns true if we try to maintain focus in the current stack when the top activity 732 * finishes. 733 */ 734 public static boolean keepFocusInStackIfPossible(int stackId) { 735 return stackId == FREEFORM_WORKSPACE_STACK_ID 736 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 737 } 738 739 /** 740 * Returns true if Stack size is affected by the docked stack changing size. 741 */ 742 public static boolean isResizeableByDockedStack(int stackId) { 743 return isStaticStack(stackId) && stackId != DOCKED_STACK_ID 744 && stackId != PINNED_STACK_ID && stackId != ASSISTANT_STACK_ID; 745 } 746 747 /** 748 * Returns true if the size of tasks in the input stack are affected by the docked stack 749 * changing size. 750 */ 751 public static boolean isTaskResizeableByDockedStack(int stackId) { 752 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 753 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID 754 && stackId != ASSISTANT_STACK_ID; 755 } 756 757 /** 758 * Returns true if the input stack is affected by drag resizing. 759 */ 760 public static boolean isStackAffectedByDragResizing(int stackId) { 761 return isStaticStack(stackId) && stackId != PINNED_STACK_ID 762 && stackId != ASSISTANT_STACK_ID; 763 } 764 765 /** 766 * Returns true if the windows of tasks being moved to the target stack from the source 767 * stack should be replaced, meaning that window manager will keep the old window around 768 * until the new is ready. 769 */ 770 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 771 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 772 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 773 } 774 775 /** 776 * Return whether a stackId is a stack containing floating windows. Floating windows 777 * are laid out differently as they are allowed to extend past the display bounds 778 * without overscan insets. 779 */ 780 public static boolean tasksAreFloating(int stackId) { 781 return stackId == FREEFORM_WORKSPACE_STACK_ID 782 || stackId == PINNED_STACK_ID; 783 } 784 785 /** 786 * Return whether a stackId is a stack that be a backdrop to a translucent activity. These 787 * are generally fullscreen stacks. 788 */ 789 public static boolean isBackdropToTranslucentActivity(int stackId) { 790 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 791 || stackId == ASSISTANT_STACK_ID; 792 } 793 794 /** 795 * Returns true if animation specs should be constructed for app transition that moves 796 * the task to the specified stack. 797 */ 798 public static boolean useAnimationSpecForAppTransition(int stackId) { 799 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 800 // reboots. 801 return stackId == FREEFORM_WORKSPACE_STACK_ID 802 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 803 || stackId == ASSISTANT_STACK_ID 804 || stackId == DOCKED_STACK_ID 805 || stackId == INVALID_STACK_ID; 806 } 807 808 /** 809 * Returns true if the windows in the stack can receive input keys. 810 */ 811 public static boolean canReceiveKeys(int stackId) { 812 return stackId != PINNED_STACK_ID; 813 } 814 815 /** 816 * Returns true if the stack can be visible above lockscreen. 817 */ 818 public static boolean isAllowedOverLockscreen(int stackId) { 819 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID || 820 stackId == ASSISTANT_STACK_ID; 821 } 822 823 /** 824 * Returns true if activities from stasks in the given {@param stackId} are allowed to 825 * enter picture-in-picture. 826 */ 827 public static boolean isAllowedToEnterPictureInPicture(int stackId) { 828 return stackId != HOME_STACK_ID && stackId != ASSISTANT_STACK_ID && 829 stackId != RECENTS_STACK_ID; 830 } 831 832 public static boolean isAlwaysOnTop(int stackId) { 833 return stackId == PINNED_STACK_ID; 834 } 835 836 /** 837 * Returns true if the top task in the task is allowed to return home when finished and 838 * there are other tasks in the stack. 839 */ 840 public static boolean allowTopTaskToReturnHome(int stackId) { 841 return stackId != PINNED_STACK_ID; 842 } 843 844 /** 845 * Returns true if the stack should be resized to match the bounds specified by 846 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 847 */ 848 public static boolean resizeStackWithLaunchBounds(int stackId) { 849 return stackId == PINNED_STACK_ID; 850 } 851 852 /** 853 * Returns true if any visible windows belonging to apps in this stack should be kept on 854 * screen when the app is killed due to something like the low memory killer. 855 */ 856 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 857 return stackId != PINNED_STACK_ID; 858 } 859 860 /** 861 * Returns true if the backdrop on the client side should match the frame of the window. 862 * Returns false, if the backdrop should be fullscreen. 863 */ 864 public static boolean useWindowFrameForBackdrop(int stackId) { 865 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 866 } 867 868 /** 869 * Returns true if a window from the specified stack with {@param stackId} are normally 870 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 871 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 872 * etc. 873 */ 874 public static boolean normallyFullscreenWindows(int stackId) { 875 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 876 && stackId != DOCKED_STACK_ID; 877 } 878 879 /** 880 * Returns true if the input stack id should only be present on a device that supports 881 * multi-window mode. 882 * @see android.app.ActivityManager#supportsMultiWindow 883 */ 884 public static boolean isMultiWindowStack(int stackId) { 885 return stackId == PINNED_STACK_ID || stackId == FREEFORM_WORKSPACE_STACK_ID 886 || stackId == DOCKED_STACK_ID; 887 } 888 889 /** 890 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 891 */ 892 public static boolean isHomeOrRecentsStack(int stackId) { 893 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 894 } 895 896 /** 897 * Returns true if activities contained in this stack can request visible behind by 898 * calling {@link Activity#requestVisibleBehind}. 899 * 900 * @deprecated This method's functionality is no longer supported as of 901 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 902 */ 903 @Deprecated 904 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 905 return stackId == FULLSCREEN_WORKSPACE_STACK_ID || 906 stackId == ASSISTANT_STACK_ID; 907 } 908 909 /** 910 * Returns true if this stack may be scaled without resizing, and windows within may need 911 * to be configured as such. 912 */ 913 public static boolean windowsAreScaleable(int stackId) { 914 return stackId == PINNED_STACK_ID; 915 } 916 917 /** 918 * Returns true if windows in this stack should be given move animations by default. 919 */ 920 public static boolean hasMovementAnimations(int stackId) { 921 return stackId != PINNED_STACK_ID; 922 } 923 924 /** Returns true if the input stack and its content can affect the device orientation. */ 925 public static boolean canSpecifyOrientation(int stackId) { 926 return stackId == HOME_STACK_ID 927 || stackId == RECENTS_STACK_ID 928 || stackId == FULLSCREEN_WORKSPACE_STACK_ID 929 || stackId == ASSISTANT_STACK_ID 930 || isDynamicStack(stackId); 931 } 932 } 933 934 /** 935 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 936 * specifies the position of the created docked stack at the top half of the screen if 937 * in portrait mode or at the left half of the screen if in landscape mode. 938 * @hide 939 */ 940 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 941 942 /** 943 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 944 * specifies the position of the created docked stack at the bottom half of the screen if 945 * in portrait mode or at the right half of the screen if in landscape mode. 946 * @hide 947 */ 948 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 949 950 /** 951 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 952 * that the resize doesn't need to preserve the window, and can be skipped if bounds 953 * is unchanged. This mode is used by window manager in most cases. 954 * @hide 955 */ 956 public static final int RESIZE_MODE_SYSTEM = 0; 957 958 /** 959 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 960 * that the resize should preserve the window if possible. 961 * @hide 962 */ 963 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 964 965 /** 966 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 967 * that the resize should be performed even if the bounds appears unchanged. 968 * @hide 969 */ 970 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 971 972 /** 973 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 974 * manager during a screen rotation. 975 * @hide 976 */ 977 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 978 979 /** 980 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 981 * resize is due to a drag action. 982 * @hide 983 */ 984 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 985 986 /** 987 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 988 * that the resize should preserve the window if possible, and should not be skipped 989 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 990 * is ending. 991 * @hide 992 */ 993 public static final int RESIZE_MODE_USER_FORCED = 994 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 995 996 /** @hide */ 997 public int getFrontActivityScreenCompatMode() { 998 try { 999 return getService().getFrontActivityScreenCompatMode(); 1000 } catch (RemoteException e) { 1001 throw e.rethrowFromSystemServer(); 1002 } 1003 } 1004 1005 /** @hide */ 1006 public void setFrontActivityScreenCompatMode(int mode) { 1007 try { 1008 getService().setFrontActivityScreenCompatMode(mode); 1009 } catch (RemoteException e) { 1010 throw e.rethrowFromSystemServer(); 1011 } 1012 } 1013 1014 /** @hide */ 1015 public int getPackageScreenCompatMode(String packageName) { 1016 try { 1017 return getService().getPackageScreenCompatMode(packageName); 1018 } catch (RemoteException e) { 1019 throw e.rethrowFromSystemServer(); 1020 } 1021 } 1022 1023 /** @hide */ 1024 public void setPackageScreenCompatMode(String packageName, int mode) { 1025 try { 1026 getService().setPackageScreenCompatMode(packageName, mode); 1027 } catch (RemoteException e) { 1028 throw e.rethrowFromSystemServer(); 1029 } 1030 } 1031 1032 /** @hide */ 1033 public boolean getPackageAskScreenCompat(String packageName) { 1034 try { 1035 return getService().getPackageAskScreenCompat(packageName); 1036 } catch (RemoteException e) { 1037 throw e.rethrowFromSystemServer(); 1038 } 1039 } 1040 1041 /** @hide */ 1042 public void setPackageAskScreenCompat(String packageName, boolean ask) { 1043 try { 1044 getService().setPackageAskScreenCompat(packageName, ask); 1045 } catch (RemoteException e) { 1046 throw e.rethrowFromSystemServer(); 1047 } 1048 } 1049 1050 /** 1051 * Return the approximate per-application memory class of the current 1052 * device. This gives you an idea of how hard a memory limit you should 1053 * impose on your application to let the overall system work best. The 1054 * returned value is in megabytes; the baseline Android memory class is 1055 * 16 (which happens to be the Java heap limit of those devices); some 1056 * device with more memory may return 24 or even higher numbers. 1057 */ 1058 public int getMemoryClass() { 1059 return staticGetMemoryClass(); 1060 } 1061 1062 /** @hide */ 1063 static public int staticGetMemoryClass() { 1064 // Really brain dead right now -- just take this from the configured 1065 // vm heap size, and assume it is in megabytes and thus ends with "m". 1066 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 1067 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 1068 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 1069 } 1070 return staticGetLargeMemoryClass(); 1071 } 1072 1073 /** 1074 * Return the approximate per-application memory class of the current 1075 * device when an application is running with a large heap. This is the 1076 * space available for memory-intensive applications; most applications 1077 * should not need this amount of memory, and should instead stay with the 1078 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 1079 * This may be the same size as {@link #getMemoryClass()} on memory 1080 * constrained devices, or it may be significantly larger on devices with 1081 * a large amount of available RAM. 1082 * 1083 * <p>The is the size of the application's Dalvik heap if it has 1084 * specified <code>android:largeHeap="true"</code> in its manifest. 1085 */ 1086 public int getLargeMemoryClass() { 1087 return staticGetLargeMemoryClass(); 1088 } 1089 1090 /** @hide */ 1091 static public int staticGetLargeMemoryClass() { 1092 // Really brain dead right now -- just take this from the configured 1093 // vm heap size, and assume it is in megabytes and thus ends with "m". 1094 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 1095 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 1096 } 1097 1098 /** 1099 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 1100 * is ultimately up to the device configuration, but currently it generally means 1101 * something in the class of a 512MB device with about a 800x480 or less screen. 1102 * This is mostly intended to be used by apps to determine whether they should turn 1103 * off certain features that require more RAM. 1104 */ 1105 public boolean isLowRamDevice() { 1106 return isLowRamDeviceStatic(); 1107 } 1108 1109 /** @hide */ 1110 public static boolean isLowRamDeviceStatic() { 1111 return RoSystemProperties.CONFIG_LOW_RAM; 1112 } 1113 1114 /** 1115 * Used by persistent processes to determine if they are running on a 1116 * higher-end device so should be okay using hardware drawing acceleration 1117 * (which tends to consume a lot more RAM). 1118 * @hide 1119 */ 1120 static public boolean isHighEndGfx() { 1121 return !isLowRamDeviceStatic() && 1122 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1123 } 1124 1125 /** 1126 * Return the maximum number of recents entries that we will maintain and show. 1127 * @hide 1128 */ 1129 static public int getMaxRecentTasksStatic() { 1130 if (gMaxRecentTasks < 0) { 1131 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1132 } 1133 return gMaxRecentTasks; 1134 } 1135 1136 /** 1137 * Return the default limit on the number of recents that an app can make. 1138 * @hide 1139 */ 1140 static public int getDefaultAppRecentsLimitStatic() { 1141 return getMaxRecentTasksStatic() / 6; 1142 } 1143 1144 /** 1145 * Return the maximum limit on the number of recents that an app can make. 1146 * @hide 1147 */ 1148 static public int getMaxAppRecentsLimitStatic() { 1149 return getMaxRecentTasksStatic() / 2; 1150 } 1151 1152 /** 1153 * Returns true if the system supports at least one form of multi-window. 1154 * E.g. freeform, split-screen, picture-in-picture. 1155 * @hide 1156 */ 1157 static public boolean supportsMultiWindow(Context context) { 1158 // On watches, multi-window is used to present essential system UI, and thus it must be 1159 // supported regardless of device memory characteristics. 1160 boolean isWatch = context.getPackageManager().hasSystemFeature( 1161 PackageManager.FEATURE_WATCH); 1162 return (!isLowRamDeviceStatic() || isWatch) 1163 && Resources.getSystem().getBoolean( 1164 com.android.internal.R.bool.config_supportsMultiWindow); 1165 } 1166 1167 /** 1168 * Returns true if the system supports split screen multi-window. 1169 * @hide 1170 */ 1171 static public boolean supportsSplitScreenMultiWindow(Context context) { 1172 return supportsMultiWindow(context) 1173 && Resources.getSystem().getBoolean( 1174 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1175 } 1176 1177 /** @removed */ 1178 @Deprecated 1179 public static int getMaxNumPictureInPictureActions() { 1180 return 3; 1181 } 1182 1183 /** 1184 * Information you can set and retrieve about the current activity within the recent task list. 1185 */ 1186 public static class TaskDescription implements Parcelable { 1187 /** @hide */ 1188 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1189 private static final String ATTR_TASKDESCRIPTIONLABEL = 1190 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1191 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1192 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1193 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1194 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1195 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1196 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1197 1198 private String mLabel; 1199 private Bitmap mIcon; 1200 private String mIconFilename; 1201 private int mColorPrimary; 1202 private int mColorBackground; 1203 private int mStatusBarColor; 1204 private int mNavigationBarColor; 1205 1206 /** 1207 * Creates the TaskDescription to the specified values. 1208 * 1209 * @param label A label and description of the current state of this task. 1210 * @param icon An icon that represents the current state of this task. 1211 * @param colorPrimary A color to override the theme's primary color. This color must be 1212 * opaque. 1213 */ 1214 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1215 this(label, icon, null, colorPrimary, 0, 0, 0); 1216 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1217 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1218 } 1219 } 1220 1221 /** 1222 * Creates the TaskDescription to the specified values. 1223 * 1224 * @param label A label and description of the current state of this activity. 1225 * @param icon An icon that represents the current state of this activity. 1226 */ 1227 public TaskDescription(String label, Bitmap icon) { 1228 this(label, icon, null, 0, 0, 0, 0); 1229 } 1230 1231 /** 1232 * Creates the TaskDescription to the specified values. 1233 * 1234 * @param label A label and description of the current state of this activity. 1235 */ 1236 public TaskDescription(String label) { 1237 this(label, null, null, 0, 0, 0, 0); 1238 } 1239 1240 /** 1241 * Creates an empty TaskDescription. 1242 */ 1243 public TaskDescription() { 1244 this(null, null, null, 0, 0, 0, 0); 1245 } 1246 1247 /** @hide */ 1248 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1249 int colorBackground, int statusBarColor, int navigationBarColor) { 1250 mLabel = label; 1251 mIcon = icon; 1252 mIconFilename = iconFilename; 1253 mColorPrimary = colorPrimary; 1254 mColorBackground = colorBackground; 1255 mStatusBarColor = statusBarColor; 1256 mNavigationBarColor = navigationBarColor; 1257 } 1258 1259 /** 1260 * Creates a copy of another TaskDescription. 1261 */ 1262 public TaskDescription(TaskDescription td) { 1263 copyFrom(td); 1264 } 1265 1266 /** 1267 * Copies this the values from another TaskDescription. 1268 * @hide 1269 */ 1270 public void copyFrom(TaskDescription other) { 1271 mLabel = other.mLabel; 1272 mIcon = other.mIcon; 1273 mIconFilename = other.mIconFilename; 1274 mColorPrimary = other.mColorPrimary; 1275 mColorBackground = other.mColorBackground; 1276 mStatusBarColor = other.mStatusBarColor; 1277 mNavigationBarColor = other.mNavigationBarColor; 1278 } 1279 1280 /** 1281 * Copies this the values from another TaskDescription, but preserves the hidden fields 1282 * if they weren't set on {@code other} 1283 * @hide 1284 */ 1285 public void copyFromPreserveHiddenFields(TaskDescription other) { 1286 mLabel = other.mLabel; 1287 mIcon = other.mIcon; 1288 mIconFilename = other.mIconFilename; 1289 mColorPrimary = other.mColorPrimary; 1290 if (other.mColorBackground != 0) { 1291 mColorBackground = other.mColorBackground; 1292 } 1293 if (other.mStatusBarColor != 0) { 1294 mStatusBarColor = other.mStatusBarColor; 1295 } 1296 if (other.mNavigationBarColor != 0) { 1297 mNavigationBarColor = other.mNavigationBarColor; 1298 } 1299 } 1300 1301 private TaskDescription(Parcel source) { 1302 readFromParcel(source); 1303 } 1304 1305 /** 1306 * Sets the label for this task description. 1307 * @hide 1308 */ 1309 public void setLabel(String label) { 1310 mLabel = label; 1311 } 1312 1313 /** 1314 * Sets the primary color for this task description. 1315 * @hide 1316 */ 1317 public void setPrimaryColor(int primaryColor) { 1318 // Ensure that the given color is valid 1319 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1320 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1321 } 1322 mColorPrimary = primaryColor; 1323 } 1324 1325 /** 1326 * Sets the background color for this task description. 1327 * @hide 1328 */ 1329 public void setBackgroundColor(int backgroundColor) { 1330 // Ensure that the given color is valid 1331 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1332 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1333 } 1334 mColorBackground = backgroundColor; 1335 } 1336 1337 /** 1338 * @hide 1339 */ 1340 public void setStatusBarColor(int statusBarColor) { 1341 mStatusBarColor = statusBarColor; 1342 } 1343 1344 /** 1345 * @hide 1346 */ 1347 public void setNavigationBarColor(int navigationBarColor) { 1348 mNavigationBarColor = navigationBarColor; 1349 } 1350 1351 /** 1352 * Sets the icon for this task description. 1353 * @hide 1354 */ 1355 public void setIcon(Bitmap icon) { 1356 mIcon = icon; 1357 } 1358 1359 /** 1360 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1361 * bitmap. 1362 * @hide 1363 */ 1364 public void setIconFilename(String iconFilename) { 1365 mIconFilename = iconFilename; 1366 mIcon = null; 1367 } 1368 1369 /** 1370 * @return The label and description of the current state of this task. 1371 */ 1372 public String getLabel() { 1373 return mLabel; 1374 } 1375 1376 /** 1377 * @return The icon that represents the current state of this task. 1378 */ 1379 public Bitmap getIcon() { 1380 if (mIcon != null) { 1381 return mIcon; 1382 } 1383 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1384 } 1385 1386 /** @hide */ 1387 public String getIconFilename() { 1388 return mIconFilename; 1389 } 1390 1391 /** @hide */ 1392 public Bitmap getInMemoryIcon() { 1393 return mIcon; 1394 } 1395 1396 /** @hide */ 1397 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1398 if (iconFilename != null) { 1399 try { 1400 return getService().getTaskDescriptionIcon(iconFilename, 1401 userId); 1402 } catch (RemoteException e) { 1403 throw e.rethrowFromSystemServer(); 1404 } 1405 } 1406 return null; 1407 } 1408 1409 /** 1410 * @return The color override on the theme's primary color. 1411 */ 1412 public int getPrimaryColor() { 1413 return mColorPrimary; 1414 } 1415 1416 /** 1417 * @return The background color. 1418 * @hide 1419 */ 1420 public int getBackgroundColor() { 1421 return mColorBackground; 1422 } 1423 1424 /** 1425 * @hide 1426 */ 1427 public int getStatusBarColor() { 1428 return mStatusBarColor; 1429 } 1430 1431 /** 1432 * @hide 1433 */ 1434 public int getNavigationBarColor() { 1435 return mNavigationBarColor; 1436 } 1437 1438 /** @hide */ 1439 public void saveToXml(XmlSerializer out) throws IOException { 1440 if (mLabel != null) { 1441 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1442 } 1443 if (mColorPrimary != 0) { 1444 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1445 Integer.toHexString(mColorPrimary)); 1446 } 1447 if (mColorBackground != 0) { 1448 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1449 Integer.toHexString(mColorBackground)); 1450 } 1451 if (mIconFilename != null) { 1452 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1453 } 1454 } 1455 1456 /** @hide */ 1457 public void restoreFromXml(String attrName, String attrValue) { 1458 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1459 setLabel(attrValue); 1460 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1461 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1462 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1463 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1464 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1465 setIconFilename(attrValue); 1466 } 1467 } 1468 1469 @Override 1470 public int describeContents() { 1471 return 0; 1472 } 1473 1474 @Override 1475 public void writeToParcel(Parcel dest, int flags) { 1476 if (mLabel == null) { 1477 dest.writeInt(0); 1478 } else { 1479 dest.writeInt(1); 1480 dest.writeString(mLabel); 1481 } 1482 if (mIcon == null) { 1483 dest.writeInt(0); 1484 } else { 1485 dest.writeInt(1); 1486 mIcon.writeToParcel(dest, 0); 1487 } 1488 dest.writeInt(mColorPrimary); 1489 dest.writeInt(mColorBackground); 1490 dest.writeInt(mStatusBarColor); 1491 dest.writeInt(mNavigationBarColor); 1492 if (mIconFilename == null) { 1493 dest.writeInt(0); 1494 } else { 1495 dest.writeInt(1); 1496 dest.writeString(mIconFilename); 1497 } 1498 } 1499 1500 public void readFromParcel(Parcel source) { 1501 mLabel = source.readInt() > 0 ? source.readString() : null; 1502 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1503 mColorPrimary = source.readInt(); 1504 mColorBackground = source.readInt(); 1505 mStatusBarColor = source.readInt(); 1506 mNavigationBarColor = source.readInt(); 1507 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1508 } 1509 1510 public static final Creator<TaskDescription> CREATOR 1511 = new Creator<TaskDescription>() { 1512 public TaskDescription createFromParcel(Parcel source) { 1513 return new TaskDescription(source); 1514 } 1515 public TaskDescription[] newArray(int size) { 1516 return new TaskDescription[size]; 1517 } 1518 }; 1519 1520 @Override 1521 public String toString() { 1522 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1523 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1524 " colorBackground: " + mColorBackground + 1525 " statusBarColor: " + mColorBackground + 1526 " navigationBarColor: " + mNavigationBarColor; 1527 } 1528 } 1529 1530 /** 1531 * Information you can retrieve about tasks that the user has most recently 1532 * started or visited. 1533 */ 1534 public static class RecentTaskInfo implements Parcelable { 1535 /** 1536 * If this task is currently running, this is the identifier for it. 1537 * If it is not running, this will be -1. 1538 */ 1539 public int id; 1540 1541 /** 1542 * The true identifier of this task, valid even if it is not running. 1543 */ 1544 public int persistentId; 1545 1546 /** 1547 * The original Intent used to launch the task. You can use this 1548 * Intent to re-launch the task (if it is no longer running) or bring 1549 * the current task to the front. 1550 */ 1551 public Intent baseIntent; 1552 1553 /** 1554 * If this task was started from an alias, this is the actual 1555 * activity component that was initially started; the component of 1556 * the baseIntent in this case is the name of the actual activity 1557 * implementation that the alias referred to. Otherwise, this is null. 1558 */ 1559 public ComponentName origActivity; 1560 1561 /** 1562 * The actual activity component that started the task. 1563 * @hide 1564 */ 1565 @Nullable 1566 public ComponentName realActivity; 1567 1568 /** 1569 * Description of the task's last state. 1570 */ 1571 public CharSequence description; 1572 1573 /** 1574 * The id of the ActivityStack this Task was on most recently. 1575 * @hide 1576 */ 1577 public int stackId; 1578 1579 /** 1580 * The id of the user the task was running as. 1581 * @hide 1582 */ 1583 public int userId; 1584 1585 /** 1586 * The first time this task was active. 1587 * @hide 1588 */ 1589 public long firstActiveTime; 1590 1591 /** 1592 * The last time this task was active. 1593 * @hide 1594 */ 1595 public long lastActiveTime; 1596 1597 /** 1598 * The recent activity values for the highest activity in the stack to have set the values. 1599 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1600 */ 1601 public TaskDescription taskDescription; 1602 1603 /** 1604 * Task affiliation for grouping with other tasks. 1605 */ 1606 public int affiliatedTaskId; 1607 1608 /** 1609 * Task affiliation color of the source task with the affiliated task id. 1610 * 1611 * @hide 1612 */ 1613 public int affiliatedTaskColor; 1614 1615 /** 1616 * The component launched as the first activity in the task. 1617 * This can be considered the "application" of this task. 1618 */ 1619 public ComponentName baseActivity; 1620 1621 /** 1622 * The activity component at the top of the history stack of the task. 1623 * This is what the user is currently doing. 1624 */ 1625 public ComponentName topActivity; 1626 1627 /** 1628 * Number of activities in this task. 1629 */ 1630 public int numActivities; 1631 1632 /** 1633 * The bounds of the task. 1634 * @hide 1635 */ 1636 public Rect bounds; 1637 1638 /** 1639 * True if the task can go in the docked stack. 1640 * @hide 1641 */ 1642 public boolean supportsSplitScreenMultiWindow; 1643 1644 /** 1645 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1646 * @hide 1647 */ 1648 public int resizeMode; 1649 1650 public RecentTaskInfo() { 1651 } 1652 1653 @Override 1654 public int describeContents() { 1655 return 0; 1656 } 1657 1658 @Override 1659 public void writeToParcel(Parcel dest, int flags) { 1660 dest.writeInt(id); 1661 dest.writeInt(persistentId); 1662 if (baseIntent != null) { 1663 dest.writeInt(1); 1664 baseIntent.writeToParcel(dest, 0); 1665 } else { 1666 dest.writeInt(0); 1667 } 1668 ComponentName.writeToParcel(origActivity, dest); 1669 ComponentName.writeToParcel(realActivity, dest); 1670 TextUtils.writeToParcel(description, dest, 1671 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1672 if (taskDescription != null) { 1673 dest.writeInt(1); 1674 taskDescription.writeToParcel(dest, 0); 1675 } else { 1676 dest.writeInt(0); 1677 } 1678 dest.writeInt(stackId); 1679 dest.writeInt(userId); 1680 dest.writeLong(firstActiveTime); 1681 dest.writeLong(lastActiveTime); 1682 dest.writeInt(affiliatedTaskId); 1683 dest.writeInt(affiliatedTaskColor); 1684 ComponentName.writeToParcel(baseActivity, dest); 1685 ComponentName.writeToParcel(topActivity, dest); 1686 dest.writeInt(numActivities); 1687 if (bounds != null) { 1688 dest.writeInt(1); 1689 bounds.writeToParcel(dest, 0); 1690 } else { 1691 dest.writeInt(0); 1692 } 1693 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1694 dest.writeInt(resizeMode); 1695 } 1696 1697 public void readFromParcel(Parcel source) { 1698 id = source.readInt(); 1699 persistentId = source.readInt(); 1700 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1701 origActivity = ComponentName.readFromParcel(source); 1702 realActivity = ComponentName.readFromParcel(source); 1703 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1704 taskDescription = source.readInt() > 0 ? 1705 TaskDescription.CREATOR.createFromParcel(source) : null; 1706 stackId = source.readInt(); 1707 userId = source.readInt(); 1708 firstActiveTime = source.readLong(); 1709 lastActiveTime = source.readLong(); 1710 affiliatedTaskId = source.readInt(); 1711 affiliatedTaskColor = source.readInt(); 1712 baseActivity = ComponentName.readFromParcel(source); 1713 topActivity = ComponentName.readFromParcel(source); 1714 numActivities = source.readInt(); 1715 bounds = source.readInt() > 0 ? 1716 Rect.CREATOR.createFromParcel(source) : null; 1717 supportsSplitScreenMultiWindow = source.readInt() == 1; 1718 resizeMode = source.readInt(); 1719 } 1720 1721 public static final Creator<RecentTaskInfo> CREATOR 1722 = new Creator<RecentTaskInfo>() { 1723 public RecentTaskInfo createFromParcel(Parcel source) { 1724 return new RecentTaskInfo(source); 1725 } 1726 public RecentTaskInfo[] newArray(int size) { 1727 return new RecentTaskInfo[size]; 1728 } 1729 }; 1730 1731 private RecentTaskInfo(Parcel source) { 1732 readFromParcel(source); 1733 } 1734 } 1735 1736 /** 1737 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1738 * that have set their 1739 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1740 */ 1741 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1742 1743 /** 1744 * Provides a list that does not contain any 1745 * recent tasks that currently are not available to the user. 1746 */ 1747 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1748 1749 /** 1750 * Provides a list that contains recent tasks for all 1751 * profiles of a user. 1752 * @hide 1753 */ 1754 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1755 1756 /** 1757 * Ignores all tasks that are on the home stack. 1758 * @hide 1759 */ 1760 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1761 1762 /** 1763 * Ignores the top task in the docked stack. 1764 * @hide 1765 */ 1766 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1767 1768 /** 1769 * Ignores all tasks that are on the pinned stack. 1770 * @hide 1771 */ 1772 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1773 1774 /** 1775 * <p></p>Return a list of the tasks that the user has recently launched, with 1776 * the most recent being first and older ones after in order. 1777 * 1778 * <p><b>Note: this method is only intended for debugging and presenting 1779 * task management user interfaces</b>. This should never be used for 1780 * core logic in an application, such as deciding between different 1781 * behaviors based on the information found here. Such uses are 1782 * <em>not</em> supported, and will likely break in the future. For 1783 * example, if multiple applications can be actively running at the 1784 * same time, assumptions made about the meaning of the data here for 1785 * purposes of control flow will be incorrect.</p> 1786 * 1787 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1788 * no longer available to third party applications: the introduction of 1789 * document-centric recents means 1790 * it can leak personal information to the caller. For backwards compatibility, 1791 * it will still return a small subset of its data: at least the caller's 1792 * own tasks (though see {@link #getAppTasks()} for the correct supported 1793 * way to retrieve that information), and possibly some other tasks 1794 * such as home that are known to not be sensitive. 1795 * 1796 * @param maxNum The maximum number of entries to return in the list. The 1797 * actual number returned may be smaller, depending on how many tasks the 1798 * user has started and the maximum number the system can remember. 1799 * @param flags Information about what to return. May be any combination 1800 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1801 * 1802 * @return Returns a list of RecentTaskInfo records describing each of 1803 * the recent tasks. 1804 */ 1805 @Deprecated 1806 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1807 throws SecurityException { 1808 try { 1809 return getService().getRecentTasks(maxNum, 1810 flags, UserHandle.myUserId()).getList(); 1811 } catch (RemoteException e) { 1812 throw e.rethrowFromSystemServer(); 1813 } 1814 } 1815 1816 /** 1817 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1818 * specific user. It requires holding 1819 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1820 * @param maxNum The maximum number of entries to return in the list. The 1821 * actual number returned may be smaller, depending on how many tasks the 1822 * user has started and the maximum number the system can remember. 1823 * @param flags Information about what to return. May be any combination 1824 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1825 * 1826 * @return Returns a list of RecentTaskInfo records describing each of 1827 * the recent tasks. Most recently activated tasks go first. 1828 * 1829 * @hide 1830 */ 1831 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1832 throws SecurityException { 1833 try { 1834 return getService().getRecentTasks(maxNum, 1835 flags, userId).getList(); 1836 } catch (RemoteException e) { 1837 throw e.rethrowFromSystemServer(); 1838 } 1839 } 1840 1841 /** 1842 * Information you can retrieve about a particular task that is currently 1843 * "running" in the system. Note that a running task does not mean the 1844 * given task actually has a process it is actively running in; it simply 1845 * means that the user has gone to it and never closed it, but currently 1846 * the system may have killed its process and is only holding on to its 1847 * last state in order to restart it when the user returns. 1848 */ 1849 public static class RunningTaskInfo implements Parcelable { 1850 /** 1851 * A unique identifier for this task. 1852 */ 1853 public int id; 1854 1855 /** 1856 * The stack that currently contains this task. 1857 * @hide 1858 */ 1859 public int stackId; 1860 1861 /** 1862 * The component launched as the first activity in the task. This can 1863 * be considered the "application" of this task. 1864 */ 1865 public ComponentName baseActivity; 1866 1867 /** 1868 * The activity component at the top of the history stack of the task. 1869 * This is what the user is currently doing. 1870 */ 1871 public ComponentName topActivity; 1872 1873 /** 1874 * Thumbnail representation of the task's current state. Currently 1875 * always null. 1876 */ 1877 public Bitmap thumbnail; 1878 1879 /** 1880 * Description of the task's current state. 1881 */ 1882 public CharSequence description; 1883 1884 /** 1885 * Number of activities in this task. 1886 */ 1887 public int numActivities; 1888 1889 /** 1890 * Number of activities that are currently running (not stopped 1891 * and persisted) in this task. 1892 */ 1893 public int numRunning; 1894 1895 /** 1896 * Last time task was run. For sorting. 1897 * @hide 1898 */ 1899 public long lastActiveTime; 1900 1901 /** 1902 * True if the task can go in the docked stack. 1903 * @hide 1904 */ 1905 public boolean supportsSplitScreenMultiWindow; 1906 1907 /** 1908 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1909 * @hide 1910 */ 1911 public int resizeMode; 1912 1913 public RunningTaskInfo() { 1914 } 1915 1916 public int describeContents() { 1917 return 0; 1918 } 1919 1920 public void writeToParcel(Parcel dest, int flags) { 1921 dest.writeInt(id); 1922 dest.writeInt(stackId); 1923 ComponentName.writeToParcel(baseActivity, dest); 1924 ComponentName.writeToParcel(topActivity, dest); 1925 if (thumbnail != null) { 1926 dest.writeInt(1); 1927 thumbnail.writeToParcel(dest, 0); 1928 } else { 1929 dest.writeInt(0); 1930 } 1931 TextUtils.writeToParcel(description, dest, 1932 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1933 dest.writeInt(numActivities); 1934 dest.writeInt(numRunning); 1935 dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); 1936 dest.writeInt(resizeMode); 1937 } 1938 1939 public void readFromParcel(Parcel source) { 1940 id = source.readInt(); 1941 stackId = source.readInt(); 1942 baseActivity = ComponentName.readFromParcel(source); 1943 topActivity = ComponentName.readFromParcel(source); 1944 if (source.readInt() != 0) { 1945 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1946 } else { 1947 thumbnail = null; 1948 } 1949 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1950 numActivities = source.readInt(); 1951 numRunning = source.readInt(); 1952 supportsSplitScreenMultiWindow = source.readInt() != 0; 1953 resizeMode = source.readInt(); 1954 } 1955 1956 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1957 public RunningTaskInfo createFromParcel(Parcel source) { 1958 return new RunningTaskInfo(source); 1959 } 1960 public RunningTaskInfo[] newArray(int size) { 1961 return new RunningTaskInfo[size]; 1962 } 1963 }; 1964 1965 private RunningTaskInfo(Parcel source) { 1966 readFromParcel(source); 1967 } 1968 } 1969 1970 /** 1971 * Get the list of tasks associated with the calling application. 1972 * 1973 * @return The list of tasks associated with the application making this call. 1974 * @throws SecurityException 1975 */ 1976 public List<ActivityManager.AppTask> getAppTasks() { 1977 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1978 List<IBinder> appTasks; 1979 try { 1980 appTasks = getService().getAppTasks(mContext.getPackageName()); 1981 } catch (RemoteException e) { 1982 throw e.rethrowFromSystemServer(); 1983 } 1984 int numAppTasks = appTasks.size(); 1985 for (int i = 0; i < numAppTasks; i++) { 1986 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1987 } 1988 return tasks; 1989 } 1990 1991 /** 1992 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1993 * with {@link #addAppTask}. 1994 */ 1995 public Size getAppTaskThumbnailSize() { 1996 synchronized (this) { 1997 ensureAppTaskThumbnailSizeLocked(); 1998 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1999 } 2000 } 2001 2002 private void ensureAppTaskThumbnailSizeLocked() { 2003 if (mAppTaskThumbnailSize == null) { 2004 try { 2005 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 2006 } catch (RemoteException e) { 2007 throw e.rethrowFromSystemServer(); 2008 } 2009 } 2010 } 2011 2012 /** 2013 * Add a new {@link AppTask} for the calling application. This will create a new 2014 * recents entry that is added to the <b>end</b> of all existing recents. 2015 * 2016 * @param activity The activity that is adding the entry. This is used to help determine 2017 * the context that the new recents entry will be in. 2018 * @param intent The Intent that describes the recents entry. This is the same Intent that 2019 * you would have used to launch the activity for it. In generally you will want to set 2020 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 2021 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 2022 * entry will exist without an activity, so it doesn't make sense to not retain it when 2023 * its activity disappears. The given Intent here also must have an explicit ComponentName 2024 * set on it. 2025 * @param description Optional additional description information. 2026 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 2027 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 2028 * recreated in your process, probably in a way you don't like, before the recents entry 2029 * is added. 2030 * 2031 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 2032 * most likely cause of failure is that there is no more room for more tasks for your app. 2033 */ 2034 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 2035 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 2036 Point size; 2037 synchronized (this) { 2038 ensureAppTaskThumbnailSizeLocked(); 2039 size = mAppTaskThumbnailSize; 2040 } 2041 final int tw = thumbnail.getWidth(); 2042 final int th = thumbnail.getHeight(); 2043 if (tw != size.x || th != size.y) { 2044 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 2045 2046 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 2047 float scale; 2048 float dx = 0, dy = 0; 2049 if (tw * size.x > size.y * th) { 2050 scale = (float) size.x / (float) th; 2051 dx = (size.y - tw * scale) * 0.5f; 2052 } else { 2053 scale = (float) size.y / (float) tw; 2054 dy = (size.x - th * scale) * 0.5f; 2055 } 2056 Matrix matrix = new Matrix(); 2057 matrix.setScale(scale, scale); 2058 matrix.postTranslate((int) (dx + 0.5f), 0); 2059 2060 Canvas canvas = new Canvas(bm); 2061 canvas.drawBitmap(thumbnail, matrix, null); 2062 canvas.setBitmap(null); 2063 2064 thumbnail = bm; 2065 } 2066 if (description == null) { 2067 description = new TaskDescription(); 2068 } 2069 try { 2070 return getService().addAppTask(activity.getActivityToken(), 2071 intent, description, thumbnail); 2072 } catch (RemoteException e) { 2073 throw e.rethrowFromSystemServer(); 2074 } 2075 } 2076 2077 /** 2078 * Return a list of the tasks that are currently running, with 2079 * the most recent being first and older ones after in order. Note that 2080 * "running" does not mean any of the task's code is currently loaded or 2081 * activity -- the task may have been frozen by the system, so that it 2082 * can be restarted in its previous state when next brought to the 2083 * foreground. 2084 * 2085 * <p><b>Note: this method is only intended for debugging and presenting 2086 * task management user interfaces</b>. This should never be used for 2087 * core logic in an application, such as deciding between different 2088 * behaviors based on the information found here. Such uses are 2089 * <em>not</em> supported, and will likely break in the future. For 2090 * example, if multiple applications can be actively running at the 2091 * same time, assumptions made about the meaning of the data here for 2092 * purposes of control flow will be incorrect.</p> 2093 * 2094 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 2095 * is no longer available to third party 2096 * applications: the introduction of document-centric recents means 2097 * it can leak person information to the caller. For backwards compatibility, 2098 * it will still retu rn a small subset of its data: at least the caller's 2099 * own tasks, and possibly some other tasks 2100 * such as home that are known to not be sensitive. 2101 * 2102 * @param maxNum The maximum number of entries to return in the list. The 2103 * actual number returned may be smaller, depending on how many tasks the 2104 * user has started. 2105 * 2106 * @return Returns a list of RunningTaskInfo records describing each of 2107 * the running tasks. 2108 */ 2109 @Deprecated 2110 public List<RunningTaskInfo> getRunningTasks(int maxNum) 2111 throws SecurityException { 2112 try { 2113 return getService().getTasks(maxNum, 0); 2114 } catch (RemoteException e) { 2115 throw e.rethrowFromSystemServer(); 2116 } 2117 } 2118 2119 /** 2120 * Completely remove the given task. 2121 * 2122 * @param taskId Identifier of the task to be removed. 2123 * @return Returns true if the given task was found and removed. 2124 * 2125 * @hide 2126 */ 2127 public boolean removeTask(int taskId) throws SecurityException { 2128 try { 2129 return getService().removeTask(taskId); 2130 } catch (RemoteException e) { 2131 throw e.rethrowFromSystemServer(); 2132 } 2133 } 2134 2135 /** 2136 * Metadata related to the {@link TaskThumbnail}. 2137 * 2138 * @hide 2139 */ 2140 public static class TaskThumbnailInfo implements Parcelable { 2141 /** @hide */ 2142 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 2143 private static final String ATTR_TASK_WIDTH = 2144 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 2145 private static final String ATTR_TASK_HEIGHT = 2146 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 2147 private static final String ATTR_SCREEN_ORIENTATION = 2148 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 2149 2150 public int taskWidth; 2151 public int taskHeight; 2152 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2153 2154 public TaskThumbnailInfo() { 2155 // Do nothing 2156 } 2157 2158 private TaskThumbnailInfo(Parcel source) { 2159 readFromParcel(source); 2160 } 2161 2162 /** 2163 * Resets this info state to the initial state. 2164 * @hide 2165 */ 2166 public void reset() { 2167 taskWidth = 0; 2168 taskHeight = 0; 2169 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2170 } 2171 2172 /** 2173 * Copies from another ThumbnailInfo. 2174 */ 2175 public void copyFrom(TaskThumbnailInfo o) { 2176 taskWidth = o.taskWidth; 2177 taskHeight = o.taskHeight; 2178 screenOrientation = o.screenOrientation; 2179 } 2180 2181 /** @hide */ 2182 public void saveToXml(XmlSerializer out) throws IOException { 2183 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2184 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2185 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2186 } 2187 2188 /** @hide */ 2189 public void restoreFromXml(String attrName, String attrValue) { 2190 if (ATTR_TASK_WIDTH.equals(attrName)) { 2191 taskWidth = Integer.parseInt(attrValue); 2192 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2193 taskHeight = Integer.parseInt(attrValue); 2194 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2195 screenOrientation = Integer.parseInt(attrValue); 2196 } 2197 } 2198 2199 public int describeContents() { 2200 return 0; 2201 } 2202 2203 public void writeToParcel(Parcel dest, int flags) { 2204 dest.writeInt(taskWidth); 2205 dest.writeInt(taskHeight); 2206 dest.writeInt(screenOrientation); 2207 } 2208 2209 public void readFromParcel(Parcel source) { 2210 taskWidth = source.readInt(); 2211 taskHeight = source.readInt(); 2212 screenOrientation = source.readInt(); 2213 } 2214 2215 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2216 public TaskThumbnailInfo createFromParcel(Parcel source) { 2217 return new TaskThumbnailInfo(source); 2218 } 2219 public TaskThumbnailInfo[] newArray(int size) { 2220 return new TaskThumbnailInfo[size]; 2221 } 2222 }; 2223 } 2224 2225 /** @hide */ 2226 public static class TaskThumbnail implements Parcelable { 2227 public Bitmap mainThumbnail; 2228 public ParcelFileDescriptor thumbnailFileDescriptor; 2229 public TaskThumbnailInfo thumbnailInfo; 2230 2231 public TaskThumbnail() { 2232 } 2233 2234 private TaskThumbnail(Parcel source) { 2235 readFromParcel(source); 2236 } 2237 2238 public int describeContents() { 2239 if (thumbnailFileDescriptor != null) { 2240 return thumbnailFileDescriptor.describeContents(); 2241 } 2242 return 0; 2243 } 2244 2245 public void writeToParcel(Parcel dest, int flags) { 2246 if (mainThumbnail != null) { 2247 dest.writeInt(1); 2248 mainThumbnail.writeToParcel(dest, flags); 2249 } else { 2250 dest.writeInt(0); 2251 } 2252 if (thumbnailFileDescriptor != null) { 2253 dest.writeInt(1); 2254 thumbnailFileDescriptor.writeToParcel(dest, flags); 2255 } else { 2256 dest.writeInt(0); 2257 } 2258 if (thumbnailInfo != null) { 2259 dest.writeInt(1); 2260 thumbnailInfo.writeToParcel(dest, flags); 2261 } else { 2262 dest.writeInt(0); 2263 } 2264 } 2265 2266 public void readFromParcel(Parcel source) { 2267 if (source.readInt() != 0) { 2268 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2269 } else { 2270 mainThumbnail = null; 2271 } 2272 if (source.readInt() != 0) { 2273 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2274 } else { 2275 thumbnailFileDescriptor = null; 2276 } 2277 if (source.readInt() != 0) { 2278 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2279 } else { 2280 thumbnailInfo = null; 2281 } 2282 } 2283 2284 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2285 public TaskThumbnail createFromParcel(Parcel source) { 2286 return new TaskThumbnail(source); 2287 } 2288 public TaskThumbnail[] newArray(int size) { 2289 return new TaskThumbnail[size]; 2290 } 2291 }; 2292 } 2293 2294 /** 2295 * Represents a task snapshot. 2296 * @hide 2297 */ 2298 public static class TaskSnapshot implements Parcelable { 2299 2300 private final GraphicBuffer mSnapshot; 2301 private final int mOrientation; 2302 private final Rect mContentInsets; 2303 private final boolean mReducedResolution; 2304 private final float mScale; 2305 2306 public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, 2307 boolean reducedResolution, float scale) { 2308 mSnapshot = snapshot; 2309 mOrientation = orientation; 2310 mContentInsets = new Rect(contentInsets); 2311 mReducedResolution = reducedResolution; 2312 mScale = scale; 2313 } 2314 2315 private TaskSnapshot(Parcel source) { 2316 mSnapshot = source.readParcelable(null /* classLoader */); 2317 mOrientation = source.readInt(); 2318 mContentInsets = source.readParcelable(null /* classLoader */); 2319 mReducedResolution = source.readBoolean(); 2320 mScale = source.readFloat(); 2321 } 2322 2323 /** 2324 * @return The graphic buffer representing the screenshot. 2325 */ 2326 public GraphicBuffer getSnapshot() { 2327 return mSnapshot; 2328 } 2329 2330 /** 2331 * @return The screen orientation the screenshot was taken in. 2332 */ 2333 public int getOrientation() { 2334 return mOrientation; 2335 } 2336 2337 /** 2338 * @return The system/content insets on the snapshot. These can be clipped off in order to 2339 * remove any areas behind system bars in the snapshot. 2340 */ 2341 public Rect getContentInsets() { 2342 return mContentInsets; 2343 } 2344 2345 /** 2346 * @return Whether this snapshot is a down-sampled version of the full resolution. 2347 */ 2348 public boolean isReducedResolution() { 2349 return mReducedResolution; 2350 } 2351 2352 /** 2353 * @return The scale this snapshot was taken in. 2354 */ 2355 public float getScale() { 2356 return mScale; 2357 } 2358 2359 @Override 2360 public int describeContents() { 2361 return 0; 2362 } 2363 2364 @Override 2365 public void writeToParcel(Parcel dest, int flags) { 2366 dest.writeParcelable(mSnapshot, 0); 2367 dest.writeInt(mOrientation); 2368 dest.writeParcelable(mContentInsets, 0); 2369 dest.writeBoolean(mReducedResolution); 2370 dest.writeFloat(mScale); 2371 } 2372 2373 @Override 2374 public String toString() { 2375 return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation 2376 + " mContentInsets=" + mContentInsets.toShortString() 2377 + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale; 2378 } 2379 2380 public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { 2381 public TaskSnapshot createFromParcel(Parcel source) { 2382 return new TaskSnapshot(source); 2383 } 2384 public TaskSnapshot[] newArray(int size) { 2385 return new TaskSnapshot[size]; 2386 } 2387 }; 2388 } 2389 2390 /** @hide */ 2391 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2392 try { 2393 return getService().getTaskThumbnail(id); 2394 } catch (RemoteException e) { 2395 throw e.rethrowFromSystemServer(); 2396 } 2397 } 2398 2399 /** @hide */ 2400 @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { 2401 MOVE_TASK_WITH_HOME, 2402 MOVE_TASK_NO_USER_ACTION, 2403 }) 2404 @Retention(RetentionPolicy.SOURCE) 2405 public @interface MoveTaskFlags {} 2406 2407 /** 2408 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2409 * activity along with the task, so it is positioned immediately behind 2410 * the task. 2411 */ 2412 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2413 2414 /** 2415 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2416 * user-instigated action, so the current activity will not receive a 2417 * hint that the user is leaving. 2418 */ 2419 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2420 2421 /** 2422 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2423 * with a null options argument. 2424 * 2425 * @param taskId The identifier of the task to be moved, as found in 2426 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2427 * @param flags Additional operational flags. 2428 */ 2429 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2430 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { 2431 moveTaskToFront(taskId, flags, null); 2432 } 2433 2434 /** 2435 * Ask that the task associated with a given task ID be moved to the 2436 * front of the stack, so it is now visible to the user. 2437 * 2438 * @param taskId The identifier of the task to be moved, as found in 2439 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2440 * @param flags Additional operational flags. 2441 * @param options Additional options for the operation, either null or 2442 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2443 * Context.startActivity(Intent, Bundle)}. 2444 */ 2445 @RequiresPermission(android.Manifest.permission.REORDER_TASKS) 2446 public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { 2447 try { 2448 getService().moveTaskToFront(taskId, flags, options); 2449 } catch (RemoteException e) { 2450 throw e.rethrowFromSystemServer(); 2451 } 2452 } 2453 2454 /** 2455 * Information you can retrieve about a particular Service that is 2456 * currently running in the system. 2457 */ 2458 public static class RunningServiceInfo implements Parcelable { 2459 /** 2460 * The service component. 2461 */ 2462 public ComponentName service; 2463 2464 /** 2465 * If non-zero, this is the process the service is running in. 2466 */ 2467 public int pid; 2468 2469 /** 2470 * The UID that owns this service. 2471 */ 2472 public int uid; 2473 2474 /** 2475 * The name of the process this service runs in. 2476 */ 2477 public String process; 2478 2479 /** 2480 * Set to true if the service has asked to run as a foreground process. 2481 */ 2482 public boolean foreground; 2483 2484 /** 2485 * The time when the service was first made active, either by someone 2486 * starting or binding to it. This 2487 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2488 */ 2489 public long activeSince; 2490 2491 /** 2492 * Set to true if this service has been explicitly started. 2493 */ 2494 public boolean started; 2495 2496 /** 2497 * Number of clients connected to the service. 2498 */ 2499 public int clientCount; 2500 2501 /** 2502 * Number of times the service's process has crashed while the service 2503 * is running. 2504 */ 2505 public int crashCount; 2506 2507 /** 2508 * The time when there was last activity in the service (either 2509 * explicit requests to start it or clients binding to it). This 2510 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2511 */ 2512 public long lastActivityTime; 2513 2514 /** 2515 * If non-zero, this service is not currently running, but scheduled to 2516 * restart at the given time. 2517 */ 2518 public long restarting; 2519 2520 /** 2521 * Bit for {@link #flags}: set if this service has been 2522 * explicitly started. 2523 */ 2524 public static final int FLAG_STARTED = 1<<0; 2525 2526 /** 2527 * Bit for {@link #flags}: set if the service has asked to 2528 * run as a foreground process. 2529 */ 2530 public static final int FLAG_FOREGROUND = 1<<1; 2531 2532 /** 2533 * Bit for {@link #flags}: set if the service is running in a 2534 * core system process. 2535 */ 2536 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2537 2538 /** 2539 * Bit for {@link #flags}: set if the service is running in a 2540 * persistent process. 2541 */ 2542 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2543 2544 /** 2545 * Running flags. 2546 */ 2547 public int flags; 2548 2549 /** 2550 * For special services that are bound to by system code, this is 2551 * the package that holds the binding. 2552 */ 2553 public String clientPackage; 2554 2555 /** 2556 * For special services that are bound to by system code, this is 2557 * a string resource providing a user-visible label for who the 2558 * client is. 2559 */ 2560 public int clientLabel; 2561 2562 public RunningServiceInfo() { 2563 } 2564 2565 public int describeContents() { 2566 return 0; 2567 } 2568 2569 public void writeToParcel(Parcel dest, int flags) { 2570 ComponentName.writeToParcel(service, dest); 2571 dest.writeInt(pid); 2572 dest.writeInt(uid); 2573 dest.writeString(process); 2574 dest.writeInt(foreground ? 1 : 0); 2575 dest.writeLong(activeSince); 2576 dest.writeInt(started ? 1 : 0); 2577 dest.writeInt(clientCount); 2578 dest.writeInt(crashCount); 2579 dest.writeLong(lastActivityTime); 2580 dest.writeLong(restarting); 2581 dest.writeInt(this.flags); 2582 dest.writeString(clientPackage); 2583 dest.writeInt(clientLabel); 2584 } 2585 2586 public void readFromParcel(Parcel source) { 2587 service = ComponentName.readFromParcel(source); 2588 pid = source.readInt(); 2589 uid = source.readInt(); 2590 process = source.readString(); 2591 foreground = source.readInt() != 0; 2592 activeSince = source.readLong(); 2593 started = source.readInt() != 0; 2594 clientCount = source.readInt(); 2595 crashCount = source.readInt(); 2596 lastActivityTime = source.readLong(); 2597 restarting = source.readLong(); 2598 flags = source.readInt(); 2599 clientPackage = source.readString(); 2600 clientLabel = source.readInt(); 2601 } 2602 2603 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2604 public RunningServiceInfo createFromParcel(Parcel source) { 2605 return new RunningServiceInfo(source); 2606 } 2607 public RunningServiceInfo[] newArray(int size) { 2608 return new RunningServiceInfo[size]; 2609 } 2610 }; 2611 2612 private RunningServiceInfo(Parcel source) { 2613 readFromParcel(source); 2614 } 2615 } 2616 2617 /** 2618 * Return a list of the services that are currently running. 2619 * 2620 * <p><b>Note: this method is only intended for debugging or implementing 2621 * service management type user interfaces.</b></p> 2622 * 2623 * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method 2624 * is no longer available to third party applications. For backwards compatibility, 2625 * it will still return the caller's own services. 2626 * 2627 * @param maxNum The maximum number of entries to return in the list. The 2628 * actual number returned may be smaller, depending on how many services 2629 * are running. 2630 * 2631 * @return Returns a list of RunningServiceInfo records describing each of 2632 * the running tasks. 2633 */ 2634 @Deprecated 2635 public List<RunningServiceInfo> getRunningServices(int maxNum) 2636 throws SecurityException { 2637 try { 2638 return getService() 2639 .getServices(maxNum, 0); 2640 } catch (RemoteException e) { 2641 throw e.rethrowFromSystemServer(); 2642 } 2643 } 2644 2645 /** 2646 * Returns a PendingIntent you can start to show a control panel for the 2647 * given running service. If the service does not have a control panel, 2648 * null is returned. 2649 */ 2650 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2651 throws SecurityException { 2652 try { 2653 return getService() 2654 .getRunningServiceControlPanel(service); 2655 } catch (RemoteException e) { 2656 throw e.rethrowFromSystemServer(); 2657 } 2658 } 2659 2660 /** 2661 * Information you can retrieve about the available memory through 2662 * {@link ActivityManager#getMemoryInfo}. 2663 */ 2664 public static class MemoryInfo implements Parcelable { 2665 /** 2666 * The available memory on the system. This number should not 2667 * be considered absolute: due to the nature of the kernel, a significant 2668 * portion of this memory is actually in use and needed for the overall 2669 * system to run well. 2670 */ 2671 public long availMem; 2672 2673 /** 2674 * The total memory accessible by the kernel. This is basically the 2675 * RAM size of the device, not including below-kernel fixed allocations 2676 * like DMA buffers, RAM for the baseband CPU, etc. 2677 */ 2678 public long totalMem; 2679 2680 /** 2681 * The threshold of {@link #availMem} at which we consider memory to be 2682 * low and start killing background services and other non-extraneous 2683 * processes. 2684 */ 2685 public long threshold; 2686 2687 /** 2688 * Set to true if the system considers itself to currently be in a low 2689 * memory situation. 2690 */ 2691 public boolean lowMemory; 2692 2693 /** @hide */ 2694 public long hiddenAppThreshold; 2695 /** @hide */ 2696 public long secondaryServerThreshold; 2697 /** @hide */ 2698 public long visibleAppThreshold; 2699 /** @hide */ 2700 public long foregroundAppThreshold; 2701 2702 public MemoryInfo() { 2703 } 2704 2705 public int describeContents() { 2706 return 0; 2707 } 2708 2709 public void writeToParcel(Parcel dest, int flags) { 2710 dest.writeLong(availMem); 2711 dest.writeLong(totalMem); 2712 dest.writeLong(threshold); 2713 dest.writeInt(lowMemory ? 1 : 0); 2714 dest.writeLong(hiddenAppThreshold); 2715 dest.writeLong(secondaryServerThreshold); 2716 dest.writeLong(visibleAppThreshold); 2717 dest.writeLong(foregroundAppThreshold); 2718 } 2719 2720 public void readFromParcel(Parcel source) { 2721 availMem = source.readLong(); 2722 totalMem = source.readLong(); 2723 threshold = source.readLong(); 2724 lowMemory = source.readInt() != 0; 2725 hiddenAppThreshold = source.readLong(); 2726 secondaryServerThreshold = source.readLong(); 2727 visibleAppThreshold = source.readLong(); 2728 foregroundAppThreshold = source.readLong(); 2729 } 2730 2731 public static final Creator<MemoryInfo> CREATOR 2732 = new Creator<MemoryInfo>() { 2733 public MemoryInfo createFromParcel(Parcel source) { 2734 return new MemoryInfo(source); 2735 } 2736 public MemoryInfo[] newArray(int size) { 2737 return new MemoryInfo[size]; 2738 } 2739 }; 2740 2741 private MemoryInfo(Parcel source) { 2742 readFromParcel(source); 2743 } 2744 } 2745 2746 /** 2747 * Return general information about the memory state of the system. This 2748 * can be used to help decide how to manage your own memory, though note 2749 * that polling is not recommended and 2750 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2751 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2752 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2753 * level of your process as needed, which gives a better hint for how to 2754 * manage its memory. 2755 */ 2756 public void getMemoryInfo(MemoryInfo outInfo) { 2757 try { 2758 getService().getMemoryInfo(outInfo); 2759 } catch (RemoteException e) { 2760 throw e.rethrowFromSystemServer(); 2761 } 2762 } 2763 2764 /** 2765 * Information you can retrieve about an ActivityStack in the system. 2766 * @hide 2767 */ 2768 public static class StackInfo implements Parcelable { 2769 public int stackId; 2770 public Rect bounds = new Rect(); 2771 public int[] taskIds; 2772 public String[] taskNames; 2773 public Rect[] taskBounds; 2774 public int[] taskUserIds; 2775 public ComponentName topActivity; 2776 public int displayId; 2777 public int userId; 2778 public boolean visible; 2779 // Index of the stack in the display's stack list, can be used for comparison of stack order 2780 public int position; 2781 2782 @Override 2783 public int describeContents() { 2784 return 0; 2785 } 2786 2787 @Override 2788 public void writeToParcel(Parcel dest, int flags) { 2789 dest.writeInt(stackId); 2790 dest.writeInt(bounds.left); 2791 dest.writeInt(bounds.top); 2792 dest.writeInt(bounds.right); 2793 dest.writeInt(bounds.bottom); 2794 dest.writeIntArray(taskIds); 2795 dest.writeStringArray(taskNames); 2796 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2797 dest.writeInt(boundsCount); 2798 for (int i = 0; i < boundsCount; i++) { 2799 dest.writeInt(taskBounds[i].left); 2800 dest.writeInt(taskBounds[i].top); 2801 dest.writeInt(taskBounds[i].right); 2802 dest.writeInt(taskBounds[i].bottom); 2803 } 2804 dest.writeIntArray(taskUserIds); 2805 dest.writeInt(displayId); 2806 dest.writeInt(userId); 2807 dest.writeInt(visible ? 1 : 0); 2808 dest.writeInt(position); 2809 if (topActivity != null) { 2810 dest.writeInt(1); 2811 topActivity.writeToParcel(dest, 0); 2812 } else { 2813 dest.writeInt(0); 2814 } 2815 } 2816 2817 public void readFromParcel(Parcel source) { 2818 stackId = source.readInt(); 2819 bounds = new Rect( 2820 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2821 taskIds = source.createIntArray(); 2822 taskNames = source.createStringArray(); 2823 final int boundsCount = source.readInt(); 2824 if (boundsCount > 0) { 2825 taskBounds = new Rect[boundsCount]; 2826 for (int i = 0; i < boundsCount; i++) { 2827 taskBounds[i] = new Rect(); 2828 taskBounds[i].set( 2829 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2830 } 2831 } else { 2832 taskBounds = null; 2833 } 2834 taskUserIds = source.createIntArray(); 2835 displayId = source.readInt(); 2836 userId = source.readInt(); 2837 visible = source.readInt() > 0; 2838 position = source.readInt(); 2839 if (source.readInt() > 0) { 2840 topActivity = ComponentName.readFromParcel(source); 2841 } 2842 } 2843 2844 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2845 @Override 2846 public StackInfo createFromParcel(Parcel source) { 2847 return new StackInfo(source); 2848 } 2849 @Override 2850 public StackInfo[] newArray(int size) { 2851 return new StackInfo[size]; 2852 } 2853 }; 2854 2855 public StackInfo() { 2856 } 2857 2858 private StackInfo(Parcel source) { 2859 readFromParcel(source); 2860 } 2861 2862 public String toString(String prefix) { 2863 StringBuilder sb = new StringBuilder(256); 2864 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2865 sb.append(" bounds="); sb.append(bounds.toShortString()); 2866 sb.append(" displayId="); sb.append(displayId); 2867 sb.append(" userId="); sb.append(userId); 2868 sb.append("\n"); 2869 prefix = prefix + " "; 2870 for (int i = 0; i < taskIds.length; ++i) { 2871 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2872 sb.append(": "); sb.append(taskNames[i]); 2873 if (taskBounds != null) { 2874 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2875 } 2876 sb.append(" userId=").append(taskUserIds[i]); 2877 sb.append(" visible=").append(visible); 2878 if (topActivity != null) { 2879 sb.append(" topActivity=").append(topActivity); 2880 } 2881 sb.append("\n"); 2882 } 2883 return sb.toString(); 2884 } 2885 2886 @Override 2887 public String toString() { 2888 return toString(""); 2889 } 2890 } 2891 2892 /** 2893 * @hide 2894 */ 2895 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2896 try { 2897 return getService().clearApplicationUserData(packageName, 2898 observer, UserHandle.myUserId()); 2899 } catch (RemoteException e) { 2900 throw e.rethrowFromSystemServer(); 2901 } 2902 } 2903 2904 /** 2905 * Permits an application to erase its own data from disk. This is equivalent to 2906 * the user choosing to clear the app's data from within the device settings UI. It 2907 * erases all dynamic data associated with the app -- its private data and data in its 2908 * private area on external storage -- but does not remove the installed application 2909 * itself, nor any OBB files. 2910 * 2911 * @return {@code true} if the application successfully requested that the application's 2912 * data be erased; {@code false} otherwise. 2913 */ 2914 public boolean clearApplicationUserData() { 2915 return clearApplicationUserData(mContext.getPackageName(), null); 2916 } 2917 2918 2919 /** 2920 * Permits an application to get the persistent URI permissions granted to another. 2921 * 2922 * <p>Typically called by Settings. 2923 * 2924 * @param packageName application to look for the granted permissions 2925 * @return list of granted URI permissions 2926 * 2927 * @hide 2928 */ 2929 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2930 try { 2931 return getService().getGrantedUriPermissions(packageName, 2932 UserHandle.myUserId()); 2933 } catch (RemoteException e) { 2934 throw e.rethrowFromSystemServer(); 2935 } 2936 } 2937 2938 /** 2939 * Permits an application to clear the persistent URI permissions granted to another. 2940 * 2941 * <p>Typically called by Settings. 2942 * 2943 * @param packageName application to clear its granted permissions 2944 * 2945 * @hide 2946 */ 2947 public void clearGrantedUriPermissions(String packageName) { 2948 try { 2949 getService().clearGrantedUriPermissions(packageName, 2950 UserHandle.myUserId()); 2951 } catch (RemoteException e) { 2952 throw e.rethrowFromSystemServer(); 2953 } 2954 } 2955 2956 /** 2957 * Information you can retrieve about any processes that are in an error condition. 2958 */ 2959 public static class ProcessErrorStateInfo implements Parcelable { 2960 /** 2961 * Condition codes 2962 */ 2963 public static final int NO_ERROR = 0; 2964 public static final int CRASHED = 1; 2965 public static final int NOT_RESPONDING = 2; 2966 2967 /** 2968 * The condition that the process is in. 2969 */ 2970 public int condition; 2971 2972 /** 2973 * The process name in which the crash or error occurred. 2974 */ 2975 public String processName; 2976 2977 /** 2978 * The pid of this process; 0 if none 2979 */ 2980 public int pid; 2981 2982 /** 2983 * The kernel user-ID that has been assigned to this process; 2984 * currently this is not a unique ID (multiple applications can have 2985 * the same uid). 2986 */ 2987 public int uid; 2988 2989 /** 2990 * The activity name associated with the error, if known. May be null. 2991 */ 2992 public String tag; 2993 2994 /** 2995 * A short message describing the error condition. 2996 */ 2997 public String shortMsg; 2998 2999 /** 3000 * A long message describing the error condition. 3001 */ 3002 public String longMsg; 3003 3004 /** 3005 * The stack trace where the error originated. May be null. 3006 */ 3007 public String stackTrace; 3008 3009 /** 3010 * to be deprecated: This value will always be null. 3011 */ 3012 public byte[] crashData = null; 3013 3014 public ProcessErrorStateInfo() { 3015 } 3016 3017 @Override 3018 public int describeContents() { 3019 return 0; 3020 } 3021 3022 @Override 3023 public void writeToParcel(Parcel dest, int flags) { 3024 dest.writeInt(condition); 3025 dest.writeString(processName); 3026 dest.writeInt(pid); 3027 dest.writeInt(uid); 3028 dest.writeString(tag); 3029 dest.writeString(shortMsg); 3030 dest.writeString(longMsg); 3031 dest.writeString(stackTrace); 3032 } 3033 3034 public void readFromParcel(Parcel source) { 3035 condition = source.readInt(); 3036 processName = source.readString(); 3037 pid = source.readInt(); 3038 uid = source.readInt(); 3039 tag = source.readString(); 3040 shortMsg = source.readString(); 3041 longMsg = source.readString(); 3042 stackTrace = source.readString(); 3043 } 3044 3045 public static final Creator<ProcessErrorStateInfo> CREATOR = 3046 new Creator<ProcessErrorStateInfo>() { 3047 public ProcessErrorStateInfo createFromParcel(Parcel source) { 3048 return new ProcessErrorStateInfo(source); 3049 } 3050 public ProcessErrorStateInfo[] newArray(int size) { 3051 return new ProcessErrorStateInfo[size]; 3052 } 3053 }; 3054 3055 private ProcessErrorStateInfo(Parcel source) { 3056 readFromParcel(source); 3057 } 3058 } 3059 3060 /** 3061 * Returns a list of any processes that are currently in an error condition. The result 3062 * will be null if all processes are running properly at this time. 3063 * 3064 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 3065 * current error conditions (it will not return an empty list). This list ordering is not 3066 * specified. 3067 */ 3068 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 3069 try { 3070 return getService().getProcessesInErrorState(); 3071 } catch (RemoteException e) { 3072 throw e.rethrowFromSystemServer(); 3073 } 3074 } 3075 3076 /** 3077 * Information you can retrieve about a running process. 3078 */ 3079 public static class RunningAppProcessInfo implements Parcelable { 3080 /** 3081 * The name of the process that this object is associated with 3082 */ 3083 public String processName; 3084 3085 /** 3086 * The pid of this process; 0 if none 3087 */ 3088 public int pid; 3089 3090 /** 3091 * The user id of this process. 3092 */ 3093 public int uid; 3094 3095 /** 3096 * All packages that have been loaded into the process. 3097 */ 3098 public String pkgList[]; 3099 3100 /** 3101 * Constant for {@link #flags}: this is an app that is unable to 3102 * correctly save its state when going to the background, 3103 * so it can not be killed while in the background. 3104 * @hide 3105 */ 3106 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 3107 3108 /** 3109 * Constant for {@link #flags}: this process is associated with a 3110 * persistent system app. 3111 * @hide 3112 */ 3113 public static final int FLAG_PERSISTENT = 1<<1; 3114 3115 /** 3116 * Constant for {@link #flags}: this process is associated with a 3117 * persistent system app. 3118 * @hide 3119 */ 3120 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 3121 3122 /** 3123 * Flags of information. May be any of 3124 * {@link #FLAG_CANT_SAVE_STATE}. 3125 * @hide 3126 */ 3127 public int flags; 3128 3129 /** 3130 * Last memory trim level reported to the process: corresponds to 3131 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 3132 * ComponentCallbacks2.onTrimMemory(int)}. 3133 */ 3134 public int lastTrimLevel; 3135 3136 /** @hide */ 3137 @IntDef(prefix = { "IMPORTANCE_" }, value = { 3138 IMPORTANCE_FOREGROUND, 3139 IMPORTANCE_FOREGROUND_SERVICE, 3140 IMPORTANCE_TOP_SLEEPING, 3141 IMPORTANCE_VISIBLE, 3142 IMPORTANCE_PERCEPTIBLE, 3143 IMPORTANCE_CANT_SAVE_STATE, 3144 IMPORTANCE_SERVICE, 3145 IMPORTANCE_CACHED, 3146 IMPORTANCE_GONE, 3147 }) 3148 @Retention(RetentionPolicy.SOURCE) 3149 public @interface Importance {} 3150 3151 /** 3152 * Constant for {@link #importance}: This process is running the 3153 * foreground UI; that is, it is the thing currently at the top of the screen 3154 * that the user is interacting with. 3155 */ 3156 public static final int IMPORTANCE_FOREGROUND = 100; 3157 3158 /** 3159 * Constant for {@link #importance}: This process is running a foreground 3160 * service, for example to perform music playback even while the user is 3161 * not immediately in the app. This generally indicates that the process 3162 * is doing something the user actively cares about. 3163 */ 3164 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 3165 3166 /** 3167 * Constant for {@link #importance}: This process is running the foreground 3168 * UI, but the device is asleep so it is not visible to the user. This means 3169 * the user is not really aware of the process, because they can not see or 3170 * interact with it, but it is quite important because it what they expect to 3171 * return to once unlocking the device. 3172 */ 3173 public static final int IMPORTANCE_TOP_SLEEPING = 150; 3174 3175 /** 3176 * Constant for {@link #importance}: This process is running something 3177 * that is actively visible to the user, though not in the immediate 3178 * foreground. This may be running a window that is behind the current 3179 * foreground (so paused and with its state saved, not interacting with 3180 * the user, but visible to them to some degree); it may also be running 3181 * other services under the system's control that it inconsiders important. 3182 */ 3183 public static final int IMPORTANCE_VISIBLE = 200; 3184 3185 /** 3186 * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value 3187 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3188 * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. 3189 * 3190 * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} 3191 * on Android versions below {@link Build.VERSION_CODES#O}. 3192 * 3193 * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be 3194 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3195 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3196 * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. 3197 */ 3198 public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; 3199 3200 /** 3201 * Constant for {@link #importance}: This process is not something the user 3202 * is directly aware of, but is otherwise perceptible to them to some degree. 3203 */ 3204 public static final int IMPORTANCE_PERCEPTIBLE = 230; 3205 3206 /** 3207 * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had 3208 * this wrong value 3209 * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, 3210 * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. 3211 * 3212 * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} 3213 * on Android versions below {@link Build.VERSION_CODES#O}. 3214 * 3215 * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be 3216 * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. 3217 * For apps targeting version {@link Build.VERSION_CODES#O} and later, 3218 * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. 3219 * 3220 * @hide 3221 */ 3222 public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; 3223 3224 /** 3225 * Constant for {@link #importance}: This process is running an 3226 * application that can not save its state, and thus can't be killed 3227 * while in the background. 3228 * @hide 3229 */ 3230 public static final int IMPORTANCE_CANT_SAVE_STATE= 270; 3231 3232 /** 3233 * Constant for {@link #importance}: This process is contains services 3234 * that should remain running. These are background services apps have 3235 * started, not something the user is aware of, so they may be killed by 3236 * the system relatively freely (though it is generally desired that they 3237 * stay running as long as they want to). 3238 */ 3239 public static final int IMPORTANCE_SERVICE = 300; 3240 3241 /** 3242 * Constant for {@link #importance}: This process process contains 3243 * cached code that is expendable, not actively running any app components 3244 * we care about. 3245 */ 3246 public static final int IMPORTANCE_CACHED = 400; 3247 3248 /** 3249 * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. 3250 */ 3251 public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; 3252 3253 /** 3254 * Constant for {@link #importance}: This process is empty of any 3255 * actively running code. 3256 * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. 3257 */ 3258 @Deprecated 3259 public static final int IMPORTANCE_EMPTY = 500; 3260 3261 /** 3262 * Constant for {@link #importance}: This process does not exist. 3263 */ 3264 public static final int IMPORTANCE_GONE = 1000; 3265 3266 /** 3267 * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value 3268 * will be passed to a client, use {@link #procStateToImportanceForClient}. 3269 * @hide 3270 */ 3271 public static @Importance int procStateToImportance(int procState) { 3272 if (procState == PROCESS_STATE_NONEXISTENT) { 3273 return IMPORTANCE_GONE; 3274 } else if (procState >= PROCESS_STATE_HOME) { 3275 return IMPORTANCE_CACHED; 3276 } else if (procState >= PROCESS_STATE_SERVICE) { 3277 return IMPORTANCE_SERVICE; 3278 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 3279 return IMPORTANCE_CANT_SAVE_STATE; 3280 } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { 3281 return IMPORTANCE_PERCEPTIBLE; 3282 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 3283 return IMPORTANCE_VISIBLE; 3284 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 3285 return IMPORTANCE_TOP_SLEEPING; 3286 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 3287 return IMPORTANCE_FOREGROUND_SERVICE; 3288 } else { 3289 return IMPORTANCE_FOREGROUND; 3290 } 3291 } 3292 3293 /** 3294 * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented 3295 * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} 3296 * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the 3297 * client's target SDK < {@link VERSION_CODES#O}. 3298 * @hide 3299 */ 3300 public static @Importance int procStateToImportanceForClient(int procState, 3301 Context clientContext) { 3302 return procStateToImportanceForTargetSdk(procState, 3303 clientContext.getApplicationInfo().targetSdkVersion); 3304 } 3305 3306 /** 3307 * See {@link #procStateToImportanceForClient}. 3308 * @hide 3309 */ 3310 public static @Importance int procStateToImportanceForTargetSdk(int procState, 3311 int targetSdkVersion) { 3312 final int importance = procStateToImportance(procState); 3313 3314 // For pre O apps, convert to the old, wrong values. 3315 if (targetSdkVersion < VERSION_CODES.O) { 3316 switch (importance) { 3317 case IMPORTANCE_PERCEPTIBLE: 3318 return IMPORTANCE_PERCEPTIBLE_PRE_26; 3319 case IMPORTANCE_CANT_SAVE_STATE: 3320 return IMPORTANCE_CANT_SAVE_STATE_PRE_26; 3321 } 3322 } 3323 return importance; 3324 } 3325 3326 /** @hide */ 3327 public static int importanceToProcState(@Importance int importance) { 3328 if (importance == IMPORTANCE_GONE) { 3329 return PROCESS_STATE_NONEXISTENT; 3330 } else if (importance >= IMPORTANCE_CACHED) { 3331 return PROCESS_STATE_HOME; 3332 } else if (importance >= IMPORTANCE_SERVICE) { 3333 return PROCESS_STATE_SERVICE; 3334 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 3335 return PROCESS_STATE_HEAVY_WEIGHT; 3336 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 3337 return PROCESS_STATE_TRANSIENT_BACKGROUND; 3338 } else if (importance >= IMPORTANCE_VISIBLE) { 3339 return PROCESS_STATE_IMPORTANT_FOREGROUND; 3340 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 3341 return PROCESS_STATE_TOP_SLEEPING; 3342 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 3343 return PROCESS_STATE_FOREGROUND_SERVICE; 3344 } else { 3345 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 3346 } 3347 } 3348 3349 /** 3350 * The relative importance level that the system places on this process. 3351 * These constants are numbered so that "more important" values are 3352 * always smaller than "less important" values. 3353 */ 3354 public @Importance int importance; 3355 3356 /** 3357 * An additional ordering within a particular {@link #importance} 3358 * category, providing finer-grained information about the relative 3359 * utility of processes within a category. This number means nothing 3360 * except that a smaller values are more recently used (and thus 3361 * more important). Currently an LRU value is only maintained for 3362 * the {@link #IMPORTANCE_CACHED} category, though others may 3363 * be maintained in the future. 3364 */ 3365 public int lru; 3366 3367 /** 3368 * Constant for {@link #importanceReasonCode}: nothing special has 3369 * been specified for the reason for this level. 3370 */ 3371 public static final int REASON_UNKNOWN = 0; 3372 3373 /** 3374 * Constant for {@link #importanceReasonCode}: one of the application's 3375 * content providers is being used by another process. The pid of 3376 * the client process is in {@link #importanceReasonPid} and the 3377 * target provider in this process is in 3378 * {@link #importanceReasonComponent}. 3379 */ 3380 public static final int REASON_PROVIDER_IN_USE = 1; 3381 3382 /** 3383 * Constant for {@link #importanceReasonCode}: one of the application's 3384 * content providers is being used by another process. The pid of 3385 * the client process is in {@link #importanceReasonPid} and the 3386 * target provider in this process is in 3387 * {@link #importanceReasonComponent}. 3388 */ 3389 public static final int REASON_SERVICE_IN_USE = 2; 3390 3391 /** 3392 * The reason for {@link #importance}, if any. 3393 */ 3394 public int importanceReasonCode; 3395 3396 /** 3397 * For the specified values of {@link #importanceReasonCode}, this 3398 * is the process ID of the other process that is a client of this 3399 * process. This will be 0 if no other process is using this one. 3400 */ 3401 public int importanceReasonPid; 3402 3403 /** 3404 * For the specified values of {@link #importanceReasonCode}, this 3405 * is the name of the component that is being used in this process. 3406 */ 3407 public ComponentName importanceReasonComponent; 3408 3409 /** 3410 * When {@link #importanceReasonPid} is non-0, this is the importance 3411 * of the other pid. @hide 3412 */ 3413 public int importanceReasonImportance; 3414 3415 /** 3416 * Current process state, as per PROCESS_STATE_* constants. 3417 * @hide 3418 */ 3419 public int processState; 3420 3421 public RunningAppProcessInfo() { 3422 importance = IMPORTANCE_FOREGROUND; 3423 importanceReasonCode = REASON_UNKNOWN; 3424 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3425 } 3426 3427 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3428 processName = pProcessName; 3429 pid = pPid; 3430 pkgList = pArr; 3431 } 3432 3433 public int describeContents() { 3434 return 0; 3435 } 3436 3437 public void writeToParcel(Parcel dest, int flags) { 3438 dest.writeString(processName); 3439 dest.writeInt(pid); 3440 dest.writeInt(uid); 3441 dest.writeStringArray(pkgList); 3442 dest.writeInt(this.flags); 3443 dest.writeInt(lastTrimLevel); 3444 dest.writeInt(importance); 3445 dest.writeInt(lru); 3446 dest.writeInt(importanceReasonCode); 3447 dest.writeInt(importanceReasonPid); 3448 ComponentName.writeToParcel(importanceReasonComponent, dest); 3449 dest.writeInt(importanceReasonImportance); 3450 dest.writeInt(processState); 3451 } 3452 3453 public void readFromParcel(Parcel source) { 3454 processName = source.readString(); 3455 pid = source.readInt(); 3456 uid = source.readInt(); 3457 pkgList = source.readStringArray(); 3458 flags = source.readInt(); 3459 lastTrimLevel = source.readInt(); 3460 importance = source.readInt(); 3461 lru = source.readInt(); 3462 importanceReasonCode = source.readInt(); 3463 importanceReasonPid = source.readInt(); 3464 importanceReasonComponent = ComponentName.readFromParcel(source); 3465 importanceReasonImportance = source.readInt(); 3466 processState = source.readInt(); 3467 } 3468 3469 public static final Creator<RunningAppProcessInfo> CREATOR = 3470 new Creator<RunningAppProcessInfo>() { 3471 public RunningAppProcessInfo createFromParcel(Parcel source) { 3472 return new RunningAppProcessInfo(source); 3473 } 3474 public RunningAppProcessInfo[] newArray(int size) { 3475 return new RunningAppProcessInfo[size]; 3476 } 3477 }; 3478 3479 private RunningAppProcessInfo(Parcel source) { 3480 readFromParcel(source); 3481 } 3482 } 3483 3484 /** 3485 * Returns a list of application processes installed on external media 3486 * that are running on the device. 3487 * 3488 * <p><b>Note: this method is only intended for debugging or building 3489 * a user-facing process management UI.</b></p> 3490 * 3491 * @return Returns a list of ApplicationInfo records, or null if none 3492 * This list ordering is not specified. 3493 * @hide 3494 */ 3495 public List<ApplicationInfo> getRunningExternalApplications() { 3496 try { 3497 return getService().getRunningExternalApplications(); 3498 } catch (RemoteException e) { 3499 throw e.rethrowFromSystemServer(); 3500 } 3501 } 3502 3503 /** 3504 * Sets the memory trim mode for a process and schedules a memory trim operation. 3505 * 3506 * <p><b>Note: this method is only intended for testing framework.</b></p> 3507 * 3508 * @return Returns true if successful. 3509 * @hide 3510 */ 3511 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3512 try { 3513 return getService().setProcessMemoryTrimLevel(process, userId, 3514 level); 3515 } catch (RemoteException e) { 3516 throw e.rethrowFromSystemServer(); 3517 } 3518 } 3519 3520 /** 3521 * Returns a list of application processes that are running on the device. 3522 * 3523 * <p><b>Note: this method is only intended for debugging or building 3524 * a user-facing process management UI.</b></p> 3525 * 3526 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3527 * running processes (it will not return an empty list). This list ordering is not 3528 * specified. 3529 */ 3530 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3531 try { 3532 return getService().getRunningAppProcesses(); 3533 } catch (RemoteException e) { 3534 throw e.rethrowFromSystemServer(); 3535 } 3536 } 3537 3538 /** 3539 * Return the importance of a given package name, based on the processes that are 3540 * currently running. The return value is one of the importance constants defined 3541 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3542 * processes that this package has code running inside of. If there are no processes 3543 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3544 * @hide 3545 */ 3546 @SystemApi @TestApi 3547 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3548 public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { 3549 try { 3550 int procState = getService().getPackageProcessState(packageName, 3551 mContext.getOpPackageName()); 3552 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3553 } catch (RemoteException e) { 3554 throw e.rethrowFromSystemServer(); 3555 } 3556 } 3557 3558 /** 3559 * Return the importance of a given uid, based on the processes that are 3560 * currently running. The return value is one of the importance constants defined 3561 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3562 * processes that this uid has running. If there are no processes 3563 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3564 * @hide 3565 */ 3566 @SystemApi @TestApi 3567 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3568 public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { 3569 try { 3570 int procState = getService().getUidProcessState(uid, 3571 mContext.getOpPackageName()); 3572 return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); 3573 } catch (RemoteException e) { 3574 throw e.rethrowFromSystemServer(); 3575 } 3576 } 3577 3578 /** 3579 * Callback to get reports about changes to the importance of a uid. Use with 3580 * {@link #addOnUidImportanceListener}. 3581 * @hide 3582 */ 3583 @SystemApi @TestApi 3584 public interface OnUidImportanceListener { 3585 /** 3586 * The importance if a given uid has changed. Will be one of the importance 3587 * values in {@link RunningAppProcessInfo}; 3588 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3589 * when the uid is no longer running at all. This callback will happen on a thread 3590 * from a thread pool, not the main UI thread. 3591 * @param uid The uid whose importance has changed. 3592 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3593 */ 3594 void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); 3595 } 3596 3597 /** 3598 * Start monitoring changes to the imoportance of uids running in the system. 3599 * @param listener The listener callback that will receive change reports. 3600 * @param importanceCutpoint The level of importance in which the caller is interested 3601 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3602 * is used here, you will receive a call each time a uids importance transitions between 3603 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3604 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3605 * 3606 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3607 * permission to use this feature.</p> 3608 * 3609 * @throws IllegalArgumentException If the listener is already registered. 3610 * @throws SecurityException If the caller does not hold 3611 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3612 * @hide 3613 */ 3614 @SystemApi @TestApi 3615 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3616 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3617 @RunningAppProcessInfo.Importance int importanceCutpoint) { 3618 synchronized (this) { 3619 if (mImportanceListeners.containsKey(listener)) { 3620 throw new IllegalArgumentException("Listener already registered: " + listener); 3621 } 3622 // TODO: implement the cut point in the system process to avoid IPCs. 3623 UidObserver observer = new UidObserver(listener, mContext); 3624 try { 3625 getService().registerUidObserver(observer, 3626 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3627 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3628 mContext.getOpPackageName()); 3629 } catch (RemoteException e) { 3630 throw e.rethrowFromSystemServer(); 3631 } 3632 mImportanceListeners.put(listener, observer); 3633 } 3634 } 3635 3636 /** 3637 * Remove an importance listener that was previously registered with 3638 * {@link #addOnUidImportanceListener}. 3639 * 3640 * @throws IllegalArgumentException If the listener is not registered. 3641 * @hide 3642 */ 3643 @SystemApi @TestApi 3644 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3645 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3646 synchronized (this) { 3647 UidObserver observer = mImportanceListeners.remove(listener); 3648 if (observer == null) { 3649 throw new IllegalArgumentException("Listener not registered: " + listener); 3650 } 3651 try { 3652 getService().unregisterUidObserver(observer); 3653 } catch (RemoteException e) { 3654 throw e.rethrowFromSystemServer(); 3655 } 3656 } 3657 } 3658 3659 /** 3660 * Return global memory state information for the calling process. This 3661 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3662 * only fields that will be filled in are 3663 * {@link RunningAppProcessInfo#pid}, 3664 * {@link RunningAppProcessInfo#uid}, 3665 * {@link RunningAppProcessInfo#lastTrimLevel}, 3666 * {@link RunningAppProcessInfo#importance}, 3667 * {@link RunningAppProcessInfo#lru}, and 3668 * {@link RunningAppProcessInfo#importanceReasonCode}. 3669 */ 3670 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3671 try { 3672 getService().getMyMemoryState(outState); 3673 } catch (RemoteException e) { 3674 throw e.rethrowFromSystemServer(); 3675 } 3676 } 3677 3678 /** 3679 * Return information about the memory usage of one or more processes. 3680 * 3681 * <p><b>Note: this method is only intended for debugging or building 3682 * a user-facing process management UI.</b></p> 3683 * 3684 * @param pids The pids of the processes whose memory usage is to be 3685 * retrieved. 3686 * @return Returns an array of memory information, one for each 3687 * requested pid. 3688 */ 3689 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3690 try { 3691 return getService().getProcessMemoryInfo(pids); 3692 } catch (RemoteException e) { 3693 throw e.rethrowFromSystemServer(); 3694 } 3695 } 3696 3697 /** 3698 * @deprecated This is now just a wrapper for 3699 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3700 * is no longer available to applications because it allows them to 3701 * break other applications by removing their alarms, stopping their 3702 * services, etc. 3703 */ 3704 @Deprecated 3705 public void restartPackage(String packageName) { 3706 killBackgroundProcesses(packageName); 3707 } 3708 3709 /** 3710 * Have the system immediately kill all background processes associated 3711 * with the given package. This is the same as the kernel killing those 3712 * processes to reclaim memory; the system will take care of restarting 3713 * these processes in the future as needed. 3714 * 3715 * @param packageName The name of the package whose processes are to 3716 * be killed. 3717 */ 3718 @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) 3719 public void killBackgroundProcesses(String packageName) { 3720 try { 3721 getService().killBackgroundProcesses(packageName, 3722 UserHandle.myUserId()); 3723 } catch (RemoteException e) { 3724 throw e.rethrowFromSystemServer(); 3725 } 3726 } 3727 3728 /** 3729 * Kills the specified UID. 3730 * @param uid The UID to kill. 3731 * @param reason The reason for the kill. 3732 * 3733 * @hide 3734 */ 3735 @SystemApi 3736 @RequiresPermission(Manifest.permission.KILL_UID) 3737 public void killUid(int uid, String reason) { 3738 try { 3739 getService().killUid(UserHandle.getAppId(uid), 3740 UserHandle.getUserId(uid), reason); 3741 } catch (RemoteException e) { 3742 throw e.rethrowFromSystemServer(); 3743 } 3744 } 3745 3746 /** 3747 * Have the system perform a force stop of everything associated with 3748 * the given application package. All processes that share its uid 3749 * will be killed, all services it has running stopped, all activities 3750 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3751 * broadcast will be sent, so that any of its registered alarms can 3752 * be stopped, notifications removed, etc. 3753 * 3754 * <p>You must hold the permission 3755 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3756 * call this method. 3757 * 3758 * @param packageName The name of the package to be stopped. 3759 * @param userId The user for which the running package is to be stopped. 3760 * 3761 * @hide This is not available to third party applications due to 3762 * it allowing them to break other applications by stopping their 3763 * services, removing their alarms, etc. 3764 */ 3765 public void forceStopPackageAsUser(String packageName, int userId) { 3766 try { 3767 getService().forceStopPackage(packageName, userId); 3768 } catch (RemoteException e) { 3769 throw e.rethrowFromSystemServer(); 3770 } 3771 } 3772 3773 /** 3774 * @see #forceStopPackageAsUser(String, int) 3775 * @hide 3776 */ 3777 @SystemApi 3778 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3779 public void forceStopPackage(String packageName) { 3780 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3781 } 3782 3783 /** 3784 * Get the device configuration attributes. 3785 */ 3786 public ConfigurationInfo getDeviceConfigurationInfo() { 3787 try { 3788 return getService().getDeviceConfigurationInfo(); 3789 } catch (RemoteException e) { 3790 throw e.rethrowFromSystemServer(); 3791 } 3792 } 3793 3794 /** 3795 * Get the preferred density of icons for the launcher. This is used when 3796 * custom drawables are created (e.g., for shortcuts). 3797 * 3798 * @return density in terms of DPI 3799 */ 3800 public int getLauncherLargeIconDensity() { 3801 final Resources res = mContext.getResources(); 3802 final int density = res.getDisplayMetrics().densityDpi; 3803 final int sw = res.getConfiguration().smallestScreenWidthDp; 3804 3805 if (sw < 600) { 3806 // Smaller than approx 7" tablets, use the regular icon size. 3807 return density; 3808 } 3809 3810 switch (density) { 3811 case DisplayMetrics.DENSITY_LOW: 3812 return DisplayMetrics.DENSITY_MEDIUM; 3813 case DisplayMetrics.DENSITY_MEDIUM: 3814 return DisplayMetrics.DENSITY_HIGH; 3815 case DisplayMetrics.DENSITY_TV: 3816 return DisplayMetrics.DENSITY_XHIGH; 3817 case DisplayMetrics.DENSITY_HIGH: 3818 return DisplayMetrics.DENSITY_XHIGH; 3819 case DisplayMetrics.DENSITY_XHIGH: 3820 return DisplayMetrics.DENSITY_XXHIGH; 3821 case DisplayMetrics.DENSITY_XXHIGH: 3822 return DisplayMetrics.DENSITY_XHIGH * 2; 3823 default: 3824 // The density is some abnormal value. Return some other 3825 // abnormal value that is a reasonable scaling of it. 3826 return (int)((density*1.5f)+.5f); 3827 } 3828 } 3829 3830 /** 3831 * Get the preferred launcher icon size. This is used when custom drawables 3832 * are created (e.g., for shortcuts). 3833 * 3834 * @return dimensions of square icons in terms of pixels 3835 */ 3836 public int getLauncherLargeIconSize() { 3837 return getLauncherLargeIconSizeInner(mContext); 3838 } 3839 3840 static int getLauncherLargeIconSizeInner(Context context) { 3841 final Resources res = context.getResources(); 3842 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3843 final int sw = res.getConfiguration().smallestScreenWidthDp; 3844 3845 if (sw < 600) { 3846 // Smaller than approx 7" tablets, use the regular icon size. 3847 return size; 3848 } 3849 3850 final int density = res.getDisplayMetrics().densityDpi; 3851 3852 switch (density) { 3853 case DisplayMetrics.DENSITY_LOW: 3854 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3855 case DisplayMetrics.DENSITY_MEDIUM: 3856 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3857 case DisplayMetrics.DENSITY_TV: 3858 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3859 case DisplayMetrics.DENSITY_HIGH: 3860 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3861 case DisplayMetrics.DENSITY_XHIGH: 3862 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3863 case DisplayMetrics.DENSITY_XXHIGH: 3864 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3865 default: 3866 // The density is some abnormal value. Return some other 3867 // abnormal value that is a reasonable scaling of it. 3868 return (int)((size*1.5f) + .5f); 3869 } 3870 } 3871 3872 /** 3873 * Returns "true" if the user interface is currently being messed with 3874 * by a monkey. 3875 */ 3876 public static boolean isUserAMonkey() { 3877 try { 3878 return getService().isUserAMonkey(); 3879 } catch (RemoteException e) { 3880 throw e.rethrowFromSystemServer(); 3881 } 3882 } 3883 3884 /** 3885 * Returns "true" if device is running in a test harness. 3886 */ 3887 public static boolean isRunningInTestHarness() { 3888 return SystemProperties.getBoolean("ro.test_harness", false); 3889 } 3890 3891 /** 3892 * Returns the launch count of each installed package. 3893 * 3894 * @hide 3895 */ 3896 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3897 try { 3898 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3899 ServiceManager.getService("usagestats")); 3900 if (usageStatsService == null) { 3901 return new HashMap<String, Integer>(); 3902 } 3903 3904 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3905 ActivityThread.currentPackageName()); 3906 if (allPkgUsageStats == null) { 3907 return new HashMap<String, Integer>(); 3908 } 3909 3910 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3911 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3912 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3913 } 3914 3915 return launchCounts; 3916 } catch (RemoteException e) { 3917 Log.w(TAG, "Could not query launch counts", e); 3918 return new HashMap<String, Integer>(); 3919 } 3920 }*/ 3921 3922 /** @hide */ 3923 public static int checkComponentPermission(String permission, int uid, 3924 int owningUid, boolean exported) { 3925 // Root, system server get to do everything. 3926 final int appId = UserHandle.getAppId(uid); 3927 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3928 return PackageManager.PERMISSION_GRANTED; 3929 } 3930 // Isolated processes don't get any permissions. 3931 if (UserHandle.isIsolated(uid)) { 3932 return PackageManager.PERMISSION_DENIED; 3933 } 3934 // If there is a uid that owns whatever is being accessed, it has 3935 // blanket access to it regardless of the permissions it requires. 3936 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3937 return PackageManager.PERMISSION_GRANTED; 3938 } 3939 // If the target is not exported, then nobody else can get to it. 3940 if (!exported) { 3941 /* 3942 RuntimeException here = new RuntimeException("here"); 3943 here.fillInStackTrace(); 3944 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3945 here); 3946 */ 3947 return PackageManager.PERMISSION_DENIED; 3948 } 3949 if (permission == null) { 3950 return PackageManager.PERMISSION_GRANTED; 3951 } 3952 try { 3953 return AppGlobals.getPackageManager() 3954 .checkUidPermission(permission, uid); 3955 } catch (RemoteException e) { 3956 throw e.rethrowFromSystemServer(); 3957 } 3958 } 3959 3960 /** @hide */ 3961 public static int checkUidPermission(String permission, int uid) { 3962 try { 3963 return AppGlobals.getPackageManager() 3964 .checkUidPermission(permission, uid); 3965 } catch (RemoteException e) { 3966 throw e.rethrowFromSystemServer(); 3967 } 3968 } 3969 3970 /** 3971 * @hide 3972 * Helper for dealing with incoming user arguments to system service calls. 3973 * Takes care of checking permissions and converting USER_CURRENT to the 3974 * actual current user. 3975 * 3976 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3977 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3978 * @param userId The user id argument supplied by the caller -- this is the user 3979 * they want to run as. 3980 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3981 * to get a USER_ALL returned and deal with it correctly. If false, 3982 * an exception will be thrown if USER_ALL is supplied. 3983 * @param requireFull If true, the caller must hold 3984 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3985 * different user than their current process; otherwise they must hold 3986 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3987 * @param name Optional textual name of the incoming call; only for generating error messages. 3988 * @param callerPackage Optional package name of caller; only for error messages. 3989 * 3990 * @return Returns the user ID that the call should run as. Will always be a concrete 3991 * user number, unless <var>allowAll</var> is true in which case it could also be 3992 * USER_ALL. 3993 */ 3994 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3995 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3996 if (UserHandle.getUserId(callingUid) == userId) { 3997 return userId; 3998 } 3999 try { 4000 return getService().handleIncomingUser(callingPid, 4001 callingUid, userId, allowAll, requireFull, name, callerPackage); 4002 } catch (RemoteException e) { 4003 throw e.rethrowFromSystemServer(); 4004 } 4005 } 4006 4007 /** 4008 * Gets the userId of the current foreground user. Requires system permissions. 4009 * @hide 4010 */ 4011 @SystemApi 4012 @RequiresPermission(anyOf = { 4013 "android.permission.INTERACT_ACROSS_USERS", 4014 "android.permission.INTERACT_ACROSS_USERS_FULL" 4015 }) 4016 public static int getCurrentUser() { 4017 UserInfo ui; 4018 try { 4019 ui = getService().getCurrentUser(); 4020 return ui != null ? ui.id : 0; 4021 } catch (RemoteException e) { 4022 throw e.rethrowFromSystemServer(); 4023 } 4024 } 4025 4026 /** 4027 * @param userid the user's id. Zero indicates the default user. 4028 * @hide 4029 */ 4030 public boolean switchUser(int userid) { 4031 try { 4032 return getService().switchUser(userid); 4033 } catch (RemoteException e) { 4034 throw e.rethrowFromSystemServer(); 4035 } 4036 } 4037 4038 /** 4039 * Logs out current current foreground user by switching to the system user and stopping the 4040 * user being switched from. 4041 * @hide 4042 */ 4043 public static void logoutCurrentUser() { 4044 int currentUser = ActivityManager.getCurrentUser(); 4045 if (currentUser != UserHandle.USER_SYSTEM) { 4046 try { 4047 getService().switchUser(UserHandle.USER_SYSTEM); 4048 getService().stopUser(currentUser, /* force= */ false, null); 4049 } catch (RemoteException e) { 4050 e.rethrowFromSystemServer(); 4051 } 4052 } 4053 } 4054 4055 /** {@hide} */ 4056 public static final int FLAG_OR_STOPPED = 1 << 0; 4057 /** {@hide} */ 4058 public static final int FLAG_AND_LOCKED = 1 << 1; 4059 /** {@hide} */ 4060 public static final int FLAG_AND_UNLOCKED = 1 << 2; 4061 /** {@hide} */ 4062 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 4063 4064 /** 4065 * Return whether the given user is actively running. This means that 4066 * the user is in the "started" state, not "stopped" -- it is currently 4067 * allowed to run code through scheduled alarms, receiving broadcasts, 4068 * etc. A started user may be either the current foreground user or a 4069 * background user; the result here does not distinguish between the two. 4070 * @param userId the user's id. Zero indicates the default user. 4071 * @hide 4072 */ 4073 public boolean isUserRunning(int userId) { 4074 try { 4075 return getService().isUserRunning(userId, 0); 4076 } catch (RemoteException e) { 4077 throw e.rethrowFromSystemServer(); 4078 } 4079 } 4080 4081 /** {@hide} */ 4082 public boolean isVrModePackageEnabled(ComponentName component) { 4083 try { 4084 return getService().isVrModePackageEnabled(component); 4085 } catch (RemoteException e) { 4086 throw e.rethrowFromSystemServer(); 4087 } 4088 } 4089 4090 /** 4091 * Perform a system dump of various state associated with the given application 4092 * package name. This call blocks while the dump is being performed, so should 4093 * not be done on a UI thread. The data will be written to the given file 4094 * descriptor as text. 4095 * @param fd The file descriptor that the dump should be written to. The file 4096 * descriptor is <em>not</em> closed by this function; the caller continues to 4097 * own it. 4098 * @param packageName The name of the package that is to be dumped. 4099 */ 4100 @RequiresPermission(Manifest.permission.DUMP) 4101 public void dumpPackageState(FileDescriptor fd, String packageName) { 4102 dumpPackageStateStatic(fd, packageName); 4103 } 4104 4105 /** 4106 * @hide 4107 */ 4108 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 4109 FileOutputStream fout = new FileOutputStream(fd); 4110 PrintWriter pw = new FastPrintWriter(fout); 4111 dumpService(pw, fd, "package", new String[] { packageName }); 4112 pw.println(); 4113 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 4114 "-a", "package", packageName }); 4115 pw.println(); 4116 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 4117 pw.println(); 4118 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 4119 pw.println(); 4120 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 4121 pw.println(); 4122 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 4123 pw.flush(); 4124 } 4125 4126 /** 4127 * @hide 4128 */ 4129 public static boolean isSystemReady() { 4130 if (!sSystemReady) { 4131 if (ActivityThread.isSystem()) { 4132 sSystemReady = 4133 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 4134 } else { 4135 // Since this is being called from outside system server, system should be 4136 // ready by now. 4137 sSystemReady = true; 4138 } 4139 } 4140 return sSystemReady; 4141 } 4142 4143 /** 4144 * @hide 4145 */ 4146 public static void broadcastStickyIntent(Intent intent, int userId) { 4147 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 4148 } 4149 4150 /** 4151 * Convenience for sending a sticky broadcast. For internal use only. 4152 * 4153 * @hide 4154 */ 4155 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 4156 try { 4157 getService().broadcastIntent( 4158 null, intent, null, null, Activity.RESULT_OK, null, null, 4159 null /*permission*/, appOp, null, false, true, userId); 4160 } catch (RemoteException ex) { 4161 } 4162 } 4163 4164 /** 4165 * @hide 4166 */ 4167 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 4168 String tag) { 4169 try { 4170 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 4171 sourceUid, sourcePkg, tag); 4172 } catch (RemoteException ex) { 4173 } 4174 } 4175 4176 /** 4177 * @hide 4178 */ 4179 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 4180 try { 4181 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4182 } catch (RemoteException ex) { 4183 } 4184 } 4185 4186 /** 4187 * @hide 4188 */ 4189 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 4190 try { 4191 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 4192 } catch (RemoteException ex) { 4193 } 4194 } 4195 4196 /** 4197 * @hide 4198 */ 4199 public static IActivityManager getService() { 4200 return IActivityManagerSingleton.get(); 4201 } 4202 4203 private static final Singleton<IActivityManager> IActivityManagerSingleton = 4204 new Singleton<IActivityManager>() { 4205 @Override 4206 protected IActivityManager create() { 4207 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 4208 final IActivityManager am = IActivityManager.Stub.asInterface(b); 4209 return am; 4210 } 4211 }; 4212 4213 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 4214 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 4215 IBinder service = ServiceManager.checkService(name); 4216 if (service == null) { 4217 pw.println(" (Service not found)"); 4218 return; 4219 } 4220 TransferPipe tp = null; 4221 try { 4222 pw.flush(); 4223 tp = new TransferPipe(); 4224 tp.setBufferPrefix(" "); 4225 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 4226 tp.go(fd, 10000); 4227 } catch (Throwable e) { 4228 if (tp != null) { 4229 tp.kill(); 4230 } 4231 pw.println("Failure dumping service:"); 4232 e.printStackTrace(pw); 4233 } 4234 } 4235 4236 /** 4237 * Request that the system start watching for the calling process to exceed a pss 4238 * size as given here. Once called, the system will look for any occasions where it 4239 * sees the associated process with a larger pss size and, when this happens, automatically 4240 * pull a heap dump from it and allow the user to share the data. Note that this request 4241 * continues running even if the process is killed and restarted. To remove the watch, 4242 * use {@link #clearWatchHeapLimit()}. 4243 * 4244 * <p>This API only work if the calling process has been marked as 4245 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 4246 * (userdebug or eng) build.</p> 4247 * 4248 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 4249 * handle heap limit reports themselves.</p> 4250 * 4251 * @param pssSize The size in bytes to set the limit at. 4252 */ 4253 public void setWatchHeapLimit(long pssSize) { 4254 try { 4255 getService().setDumpHeapDebugLimit(null, 0, pssSize, 4256 mContext.getPackageName()); 4257 } catch (RemoteException e) { 4258 throw e.rethrowFromSystemServer(); 4259 } 4260 } 4261 4262 /** 4263 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 4264 * If your package has an activity handling this action, it will be launched with the 4265 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 4266 * match the activty must support this action and a MIME type of "*/*". 4267 */ 4268 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 4269 4270 /** 4271 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 4272 */ 4273 public void clearWatchHeapLimit() { 4274 try { 4275 getService().setDumpHeapDebugLimit(null, 0, 0, null); 4276 } catch (RemoteException e) { 4277 throw e.rethrowFromSystemServer(); 4278 } 4279 } 4280 4281 /** 4282 * @hide 4283 */ 4284 public void startLockTaskMode(int taskId) { 4285 try { 4286 getService().startLockTaskModeById(taskId); 4287 } catch (RemoteException e) { 4288 throw e.rethrowFromSystemServer(); 4289 } 4290 } 4291 4292 /** 4293 * @hide 4294 */ 4295 public void stopLockTaskMode() { 4296 try { 4297 getService().stopLockTaskMode(); 4298 } catch (RemoteException e) { 4299 throw e.rethrowFromSystemServer(); 4300 } 4301 } 4302 4303 /** 4304 * Return whether currently in lock task mode. When in this mode 4305 * no new tasks can be created or switched to. 4306 * 4307 * @see Activity#startLockTask() 4308 * 4309 * @deprecated Use {@link #getLockTaskModeState} instead. 4310 */ 4311 @Deprecated 4312 public boolean isInLockTaskMode() { 4313 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 4314 } 4315 4316 /** 4317 * Return the current state of task locking. The three possible outcomes 4318 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 4319 * and {@link #LOCK_TASK_MODE_PINNED}. 4320 * 4321 * @see Activity#startLockTask() 4322 */ 4323 public int getLockTaskModeState() { 4324 try { 4325 return getService().getLockTaskModeState(); 4326 } catch (RemoteException e) { 4327 throw e.rethrowFromSystemServer(); 4328 } 4329 } 4330 4331 /** 4332 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 4333 * thread can be a VR thread in a process at a time, and that thread may be subject to 4334 * restrictions on the amount of time it can run. 4335 * 4336 * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this 4337 * method will return to normal operation, and calling this method will do nothing while 4338 * persistent VR mode is enabled. 4339 * 4340 * To reset the VR thread for an application, a tid of 0 can be passed. 4341 * 4342 * @see android.os.Process#myTid() 4343 * @param tid tid of the VR thread 4344 */ 4345 public static void setVrThread(int tid) { 4346 try { 4347 getService().setVrThread(tid); 4348 } catch (RemoteException e) { 4349 // pass 4350 } 4351 } 4352 4353 /** 4354 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist 4355 * beyond a single process. Only one thread can be a 4356 * persistent VR thread at a time, and that thread may be subject to restrictions on the amount 4357 * of time it can run. Calling this method will disable aggressive scheduling for non-persistent 4358 * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the 4359 * persistent VR thread loses its new scheduling priority; this method must be called again to 4360 * set the persistent thread. 4361 * 4362 * To reset the persistent VR thread, a tid of 0 can be passed. 4363 * 4364 * @see android.os.Process#myTid() 4365 * @param tid tid of the VR thread 4366 * @hide 4367 */ 4368 @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) 4369 public static void setPersistentVrThread(int tid) { 4370 try { 4371 getService().setPersistentVrThread(tid); 4372 } catch (RemoteException e) { 4373 // pass 4374 } 4375 } 4376 4377 /** 4378 * The AppTask allows you to manage your own application's tasks. 4379 * See {@link android.app.ActivityManager#getAppTasks()} 4380 */ 4381 public static class AppTask { 4382 private IAppTask mAppTaskImpl; 4383 4384 /** @hide */ 4385 public AppTask(IAppTask task) { 4386 mAppTaskImpl = task; 4387 } 4388 4389 /** 4390 * Finishes all activities in this task and removes it from the recent tasks list. 4391 */ 4392 public void finishAndRemoveTask() { 4393 try { 4394 mAppTaskImpl.finishAndRemoveTask(); 4395 } catch (RemoteException e) { 4396 throw e.rethrowFromSystemServer(); 4397 } 4398 } 4399 4400 /** 4401 * Get the RecentTaskInfo associated with this task. 4402 * 4403 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 4404 */ 4405 public RecentTaskInfo getTaskInfo() { 4406 try { 4407 return mAppTaskImpl.getTaskInfo(); 4408 } catch (RemoteException e) { 4409 throw e.rethrowFromSystemServer(); 4410 } 4411 } 4412 4413 /** 4414 * Bring this task to the foreground. If it contains activities, they will be 4415 * brought to the foreground with it and their instances re-created if needed. 4416 * If it doesn't contain activities, the root activity of the task will be 4417 * re-launched. 4418 */ 4419 public void moveToFront() { 4420 try { 4421 mAppTaskImpl.moveToFront(); 4422 } catch (RemoteException e) { 4423 throw e.rethrowFromSystemServer(); 4424 } 4425 } 4426 4427 /** 4428 * Start an activity in this task. Brings the task to the foreground. If this task 4429 * is not currently active (that is, its id < 0), then a new activity for the given 4430 * Intent will be launched as the root of the task and the task brought to the 4431 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4432 * an activity to launch in a new task, then a new activity for the given Intent will 4433 * be launched on top of the task and the task brought to the foreground. If this 4434 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4435 * or would otherwise be launched in to a new task, then the activity not launched but 4436 * this task be brought to the foreground and a new intent delivered to the top 4437 * activity if appropriate. 4438 * 4439 * <p>In other words, you generally want to use an Intent here that does not specify 4440 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4441 * and let the system do the right thing.</p> 4442 * 4443 * @param intent The Intent describing the new activity to be launched on the task. 4444 * @param options Optional launch options. 4445 * 4446 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4447 */ 4448 public void startActivity(Context context, Intent intent, Bundle options) { 4449 ActivityThread thread = ActivityThread.currentActivityThread(); 4450 thread.getInstrumentation().execStartActivityFromAppTask(context, 4451 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4452 } 4453 4454 /** 4455 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4456 * Intent of this AppTask. 4457 * 4458 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4459 * be set; otherwise, it will be cleared. 4460 */ 4461 public void setExcludeFromRecents(boolean exclude) { 4462 try { 4463 mAppTaskImpl.setExcludeFromRecents(exclude); 4464 } catch (RemoteException e) { 4465 throw e.rethrowFromSystemServer(); 4466 } 4467 } 4468 } 4469 } 4470