ActivityManager.java revision dc589ac82b5fe2063f4cfd94c8ae26d43d5420a0
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.RequiresPermission; 24import android.annotation.SystemApi; 25import android.annotation.TestApi; 26import android.content.pm.ActivityInfo; 27import android.content.res.Configuration; 28import android.graphics.Canvas; 29import android.graphics.Matrix; 30import android.graphics.Point; 31import android.os.BatteryStats; 32import android.os.IBinder; 33import android.os.ParcelFileDescriptor; 34 35import com.android.internal.app.procstats.ProcessStats; 36import com.android.internal.os.RoSystemProperties; 37import com.android.internal.os.TransferPipe; 38import com.android.internal.util.FastPrintWriter; 39import com.android.server.LocalServices; 40 41import android.content.ComponentName; 42import android.content.Context; 43import android.content.Intent; 44import android.content.UriPermission; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.ConfigurationInfo; 47import android.content.pm.IPackageDataObserver; 48import android.content.pm.PackageManager; 49import android.content.pm.ParceledListSlice; 50import android.content.pm.UserInfo; 51import android.content.res.Resources; 52import android.graphics.Bitmap; 53import android.graphics.Color; 54import android.graphics.Rect; 55import android.os.Bundle; 56import android.os.Debug; 57import android.os.Handler; 58import android.os.Parcel; 59import android.os.Parcelable; 60import android.os.Process; 61import android.os.RemoteException; 62import android.os.ServiceManager; 63import android.os.SystemProperties; 64import android.os.UserHandle; 65import android.text.TextUtils; 66import android.util.ArrayMap; 67import android.util.DisplayMetrics; 68import android.util.Singleton; 69import android.util.Size; 70 71import org.xmlpull.v1.XmlSerializer; 72 73import java.io.FileDescriptor; 74import java.io.FileOutputStream; 75import java.io.IOException; 76import java.io.PrintWriter; 77import java.lang.annotation.Retention; 78import java.lang.annotation.RetentionPolicy; 79import java.util.ArrayList; 80import java.util.List; 81 82/** 83 * Interact with the overall activities running in the system. 84 */ 85public class ActivityManager { 86 private static String TAG = "ActivityManager"; 87 88 private static int gMaxRecentTasks = -1; 89 90 private final Context mContext; 91 private final Handler mHandler; 92 93 private static volatile boolean sSystemReady = false; 94 95 static final class UidObserver extends IUidObserver.Stub { 96 final OnUidImportanceListener mListener; 97 98 UidObserver(OnUidImportanceListener listener) { 99 mListener = listener; 100 } 101 102 @Override 103 public void onUidStateChanged(int uid, int procState) { 104 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportance(procState)); 105 } 106 107 @Override 108 public void onUidGone(int uid, boolean disabled) { 109 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 110 } 111 112 @Override 113 public void onUidActive(int uid) { 114 } 115 116 @Override 117 public void onUidIdle(int uid, boolean disabled) { 118 } 119 } 120 121 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 122 123 /** 124 * Defines acceptable types of bugreports. 125 * @hide 126 */ 127 @Retention(RetentionPolicy.SOURCE) 128 @IntDef({ 129 BUGREPORT_OPTION_FULL, 130 BUGREPORT_OPTION_INTERACTIVE, 131 BUGREPORT_OPTION_REMOTE, 132 BUGREPORT_OPTION_WEAR 133 }) 134 public @interface BugreportMode {} 135 /** 136 * Takes a bugreport without user interference (and hence causing less 137 * interference to the system), but includes all sections. 138 * @hide 139 */ 140 public static final int BUGREPORT_OPTION_FULL = 0; 141 /** 142 * Allows user to monitor progress and enter additional data; might not include all 143 * sections. 144 * @hide 145 */ 146 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 147 /** 148 * Takes a bugreport requested remotely by administrator of the Device Owner app, 149 * not the device's user. 150 * @hide 151 */ 152 public static final int BUGREPORT_OPTION_REMOTE = 2; 153 /** 154 * Takes a bugreport on a wearable device. 155 * @hide 156 */ 157 public static final int BUGREPORT_OPTION_WEAR = 3; 158 159 /** 160 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 161 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 162 * uninstalled in lieu of the declaring one. The package named here must be 163 * signed with the same certificate as the one declaring the {@code <meta-data>}. 164 */ 165 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 166 167 /** 168 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 169 * @hide 170 */ 171 public static final int START_VOICE_HIDDEN_SESSION = -10; 172 173 /** 174 * Result for IActivityManager.startVoiceActivity: active session does not match 175 * the requesting token. 176 * @hide 177 */ 178 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 179 180 /** 181 * Result for IActivityManager.startActivity: trying to start a background user 182 * activity that shouldn't be displayed for all users. 183 * @hide 184 */ 185 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 186 187 /** 188 * Result for IActivityManager.startActivity: trying to start an activity under voice 189 * control when that activity does not support the VOICE category. 190 * @hide 191 */ 192 public static final int START_NOT_VOICE_COMPATIBLE = -7; 193 194 /** 195 * Result for IActivityManager.startActivity: an error where the 196 * start had to be canceled. 197 * @hide 198 */ 199 public static final int START_CANCELED = -6; 200 201 /** 202 * Result for IActivityManager.startActivity: an error where the 203 * thing being started is not an activity. 204 * @hide 205 */ 206 public static final int START_NOT_ACTIVITY = -5; 207 208 /** 209 * Result for IActivityManager.startActivity: an error where the 210 * caller does not have permission to start the activity. 211 * @hide 212 */ 213 public static final int START_PERMISSION_DENIED = -4; 214 215 /** 216 * Result for IActivityManager.startActivity: an error where the 217 * caller has requested both to forward a result and to receive 218 * a result. 219 * @hide 220 */ 221 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 222 223 /** 224 * Result for IActivityManager.startActivity: an error where the 225 * requested class is not found. 226 * @hide 227 */ 228 public static final int START_CLASS_NOT_FOUND = -2; 229 230 /** 231 * Result for IActivityManager.startActivity: an error where the 232 * given Intent could not be resolved to an activity. 233 * @hide 234 */ 235 public static final int START_INTENT_NOT_RESOLVED = -1; 236 237 /** 238 * Result for IActivityManaqer.startActivity: the activity was started 239 * successfully as normal. 240 * @hide 241 */ 242 public static final int START_SUCCESS = 0; 243 244 /** 245 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 246 * be executed if it is the recipient, and that is indeed the case. 247 * @hide 248 */ 249 public static final int START_RETURN_INTENT_TO_CALLER = 1; 250 251 /** 252 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 253 * a task was simply brought to the foreground. 254 * @hide 255 */ 256 public static final int START_TASK_TO_FRONT = 2; 257 258 /** 259 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 260 * the given Intent was given to the existing top activity. 261 * @hide 262 */ 263 public static final int START_DELIVERED_TO_TOP = 3; 264 265 /** 266 * Result for IActivityManaqer.startActivity: request was canceled because 267 * app switches are temporarily canceled to ensure the user's last request 268 * (such as pressing home) is performed. 269 * @hide 270 */ 271 public static final int START_SWITCHES_CANCELED = 4; 272 273 /** 274 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 275 * while in Lock Task Mode. 276 * @hide 277 */ 278 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 279 280 /** 281 * Flag for IActivityManaqer.startActivity: do special start mode where 282 * a new activity is launched only if it is needed. 283 * @hide 284 */ 285 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 286 287 /** 288 * Flag for IActivityManaqer.startActivity: launch the app for 289 * debugging. 290 * @hide 291 */ 292 public static final int START_FLAG_DEBUG = 1<<1; 293 294 /** 295 * Flag for IActivityManaqer.startActivity: launch the app for 296 * allocation tracking. 297 * @hide 298 */ 299 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 300 301 /** 302 * Flag for IActivityManaqer.startActivity: launch the app with 303 * native debugging support. 304 * @hide 305 */ 306 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 307 308 /** 309 * Result for IActivityManaqer.broadcastIntent: success! 310 * @hide 311 */ 312 public static final int BROADCAST_SUCCESS = 0; 313 314 /** 315 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 316 * a sticky intent without appropriate permission. 317 * @hide 318 */ 319 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 320 321 /** 322 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 323 * to a stopped user. Fail. 324 * @hide 325 */ 326 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 327 328 /** 329 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 330 * for a sendBroadcast operation. 331 * @hide 332 */ 333 public static final int INTENT_SENDER_BROADCAST = 1; 334 335 /** 336 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 337 * for a startActivity operation. 338 * @hide 339 */ 340 public static final int INTENT_SENDER_ACTIVITY = 2; 341 342 /** 343 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 344 * for an activity result operation. 345 * @hide 346 */ 347 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 348 349 /** 350 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 351 * for a startService operation. 352 * @hide 353 */ 354 public static final int INTENT_SENDER_SERVICE = 4; 355 356 /** @hide User operation call: success! */ 357 public static final int USER_OP_SUCCESS = 0; 358 359 /** @hide User operation call: given user id is not known. */ 360 public static final int USER_OP_UNKNOWN_USER = -1; 361 362 /** @hide User operation call: given user id is the current user, can't be stopped. */ 363 public static final int USER_OP_IS_CURRENT = -2; 364 365 /** @hide User operation call: system user can't be stopped. */ 366 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 367 368 /** @hide User operation call: one of related users cannot be stopped. */ 369 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 370 371 /** @hide Not a real process state. */ 372 public static final int PROCESS_STATE_UNKNOWN = -1; 373 374 /** @hide Process is a persistent system process. */ 375 public static final int PROCESS_STATE_PERSISTENT = 0; 376 377 /** @hide Process is a persistent system process and is doing UI. */ 378 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 379 380 /** @hide Process is hosting the current top activities. Note that this covers 381 * all activities that are visible to the user. */ 382 public static final int PROCESS_STATE_TOP = 2; 383 384 /** @hide Process is hosting a foreground service due to a system binding. */ 385 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 386 387 /** @hide Process is hosting a foreground service. */ 388 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 389 390 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 391 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 392 393 /** @hide Process is important to the user, and something they are aware of. */ 394 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 395 396 /** @hide Process is important to the user, but not something they are aware of. */ 397 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 398 399 /** @hide Process is in the background running a backup/restore operation. */ 400 public static final int PROCESS_STATE_BACKUP = 8; 401 402 /** @hide Process is in the background, but it can't restore its state so we want 403 * to try to avoid killing it. */ 404 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 405 406 /** @hide Process is in the background running a service. Unlike oom_adj, this level 407 * is used for both the normal running in background state and the executing 408 * operations state. */ 409 public static final int PROCESS_STATE_SERVICE = 10; 410 411 /** @hide Process is in the background running a receiver. Note that from the 412 * perspective of oom_adj receivers run at a higher foreground level, but for our 413 * prioritization here that is not necessary and putting them below services means 414 * many fewer changes in some process states as they receive broadcasts. */ 415 public static final int PROCESS_STATE_RECEIVER = 11; 416 417 /** @hide Process is in the background but hosts the home activity. */ 418 public static final int PROCESS_STATE_HOME = 12; 419 420 /** @hide Process is in the background but hosts the last shown activity. */ 421 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 422 423 /** @hide Process is being cached for later use and contains activities. */ 424 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 425 426 /** @hide Process is being cached for later use and is a client of another cached 427 * process that contains activities. */ 428 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 429 430 /** @hide Process is being cached for later use and is empty. */ 431 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 432 433 /** @hide Process does not exist. */ 434 public static final int PROCESS_STATE_NONEXISTENT = 17; 435 436 /** @hide The lowest process state number */ 437 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 438 439 /** @hide The highest process state number */ 440 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 441 442 /** @hide Should this process state be considered a background state? */ 443 public static final boolean isProcStateBackground(int procState) { 444 return procState >= PROCESS_STATE_BACKUP; 445 } 446 447 /** @hide requestType for assist context: only basic information. */ 448 public static final int ASSIST_CONTEXT_BASIC = 0; 449 450 /** @hide requestType for assist context: generate full AssistStructure. */ 451 public static final int ASSIST_CONTEXT_FULL = 1; 452 453 /** @hide requestType for assist context: generate full AssistStructure for auto-fill. */ 454 public static final int ASSIST_CONTEXT_AUTOFILL = 2; 455 456 /** @hide Flag for registerUidObserver: report changes in process state. */ 457 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 458 459 /** @hide Flag for registerUidObserver: report uid gone. */ 460 public static final int UID_OBSERVER_GONE = 1<<1; 461 462 /** @hide Flag for registerUidObserver: report uid has become idle. */ 463 public static final int UID_OBSERVER_IDLE = 1<<2; 464 465 /** @hide Flag for registerUidObserver: report uid has become active. */ 466 public static final int UID_OBSERVER_ACTIVE = 1<<3; 467 468 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 469 public static final int APP_START_MODE_NORMAL = 0; 470 471 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 472 public static final int APP_START_MODE_DELAYED = 1; 473 474 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 475 * launches. */ 476 public static final int APP_START_MODE_DISABLED = 2; 477 478 /** 479 * Lock task mode is not active. 480 */ 481 public static final int LOCK_TASK_MODE_NONE = 0; 482 483 /** 484 * Full lock task mode is active. 485 */ 486 public static final int LOCK_TASK_MODE_LOCKED = 1; 487 488 /** 489 * App pinning mode is active. 490 */ 491 public static final int LOCK_TASK_MODE_PINNED = 2; 492 493 Point mAppTaskThumbnailSize; 494 495 /*package*/ ActivityManager(Context context, Handler handler) { 496 mContext = context; 497 mHandler = handler; 498 } 499 500 /** 501 * Screen compatibility mode: the application most always run in 502 * compatibility mode. 503 * @hide 504 */ 505 public static final int COMPAT_MODE_ALWAYS = -1; 506 507 /** 508 * Screen compatibility mode: the application can never run in 509 * compatibility mode. 510 * @hide 511 */ 512 public static final int COMPAT_MODE_NEVER = -2; 513 514 /** 515 * Screen compatibility mode: unknown. 516 * @hide 517 */ 518 public static final int COMPAT_MODE_UNKNOWN = -3; 519 520 /** 521 * Screen compatibility mode: the application currently has compatibility 522 * mode disabled. 523 * @hide 524 */ 525 public static final int COMPAT_MODE_DISABLED = 0; 526 527 /** 528 * Screen compatibility mode: the application currently has compatibility 529 * mode enabled. 530 * @hide 531 */ 532 public static final int COMPAT_MODE_ENABLED = 1; 533 534 /** 535 * Screen compatibility mode: request to toggle the application's 536 * compatibility mode. 537 * @hide 538 */ 539 public static final int COMPAT_MODE_TOGGLE = 2; 540 541 /** @hide */ 542 public static class StackId { 543 /** Invalid stack ID. */ 544 public static final int INVALID_STACK_ID = -1; 545 546 /** First static stack ID. */ 547 public static final int FIRST_STATIC_STACK_ID = 0; 548 549 /** Home activity stack ID. */ 550 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 551 552 /** ID of stack where fullscreen activities are normally launched into. */ 553 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 554 555 /** ID of stack where freeform/resized activities are normally launched into. */ 556 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 557 558 /** ID of stack that occupies a dedicated region of the screen. */ 559 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 560 561 /** ID of stack that always on top (always visible) when it exist. */ 562 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 563 564 /** Last static stack stack ID. */ 565 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 566 567 /** Start of ID range used by stacks that are created dynamically. */ 568 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 569 570 public static boolean isStaticStack(int stackId) { 571 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 572 } 573 574 /** 575 * Returns true if the activities contained in the input stack display a shadow around 576 * their border. 577 */ 578 public static boolean hasWindowShadow(int stackId) { 579 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 580 } 581 582 /** 583 * Returns true if the activities contained in the input stack display a decor view. 584 */ 585 public static boolean hasWindowDecor(int stackId) { 586 return stackId == FREEFORM_WORKSPACE_STACK_ID; 587 } 588 589 /** 590 * Returns true if the tasks contained in the stack can be resized independently of the 591 * stack. 592 */ 593 public static boolean isTaskResizeAllowed(int stackId) { 594 return stackId == FREEFORM_WORKSPACE_STACK_ID; 595 } 596 597 /** Returns true if the task bounds should persist across power cycles. */ 598 public static boolean persistTaskBounds(int stackId) { 599 return stackId == FREEFORM_WORKSPACE_STACK_ID; 600 } 601 602 /** 603 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 604 */ 605 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 606 return stackId == PINNED_STACK_ID; 607 } 608 609 /** 610 * Returns true if we try to maintain focus in the current stack when the top activity 611 * finishes. 612 */ 613 public static boolean keepFocusInStackIfPossible(int stackId) { 614 return stackId == FREEFORM_WORKSPACE_STACK_ID 615 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 616 } 617 618 /** 619 * Returns true if Stack size is affected by the docked stack changing size. 620 */ 621 public static boolean isResizeableByDockedStack(int stackId) { 622 return isStaticStack(stackId) && 623 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 624 } 625 626 /** 627 * Returns true if the size of tasks in the input stack are affected by the docked stack 628 * changing size. 629 */ 630 public static boolean isTaskResizeableByDockedStack(int stackId) { 631 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 632 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 633 } 634 635 /** 636 * Returns true if the windows of tasks being moved to the target stack from the source 637 * stack should be replaced, meaning that window manager will keep the old window around 638 * until the new is ready. 639 */ 640 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 641 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 642 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 643 } 644 645 /** 646 * Return whether a stackId is a stack containing floating windows. Floating windows 647 * are laid out differently as they are allowed to extend past the display bounds 648 * without overscan insets. 649 */ 650 public static boolean tasksAreFloating(int stackId) { 651 return stackId == FREEFORM_WORKSPACE_STACK_ID 652 || stackId == PINNED_STACK_ID; 653 } 654 655 /** 656 * Returns true if animation specs should be constructed for app transition that moves 657 * the task to the specified stack. 658 */ 659 public static boolean useAnimationSpecForAppTransition(int stackId) { 660 661 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 662 // reboots. 663 return stackId == FREEFORM_WORKSPACE_STACK_ID 664 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 665 || stackId == INVALID_STACK_ID; 666 } 667 668 /** Returns true if the windows in the stack can receive input keys. */ 669 public static boolean canReceiveKeys(int stackId) { 670 return stackId != PINNED_STACK_ID; 671 } 672 673 /** 674 * Returns true if the stack can be visible above lockscreen. 675 */ 676 public static boolean isAllowedOverLockscreen(int stackId) { 677 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 678 } 679 680 public static boolean isAlwaysOnTop(int stackId) { 681 return stackId == PINNED_STACK_ID; 682 } 683 684 /** 685 * Returns true if the top task in the task is allowed to return home when finished and 686 * there are other tasks in the stack. 687 */ 688 public static boolean allowTopTaskToReturnHome(int stackId) { 689 return stackId != PINNED_STACK_ID; 690 } 691 692 /** 693 * Returns true if the stack should be resized to match the bounds specified by 694 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 695 */ 696 public static boolean resizeStackWithLaunchBounds(int stackId) { 697 return stackId == PINNED_STACK_ID; 698 } 699 700 /** 701 * Returns true if any visible windows belonging to apps in this stack should be kept on 702 * screen when the app is killed due to something like the low memory killer. 703 */ 704 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 705 return stackId != PINNED_STACK_ID; 706 } 707 708 /** 709 * Returns true if the backdrop on the client side should match the frame of the window. 710 * Returns false, if the backdrop should be fullscreen. 711 */ 712 public static boolean useWindowFrameForBackdrop(int stackId) { 713 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 714 } 715 716 /** 717 * Returns true if a window from the specified stack with {@param stackId} are normally 718 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 719 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 720 * etc. 721 */ 722 public static boolean normallyFullscreenWindows(int stackId) { 723 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 724 && stackId != DOCKED_STACK_ID; 725 } 726 727 /** 728 * Returns true if the input stack id should only be present on a device that supports 729 * multi-window mode. 730 * @see android.app.ActivityManager#supportsMultiWindow 731 */ 732 public static boolean isMultiWindowStack(int stackId) { 733 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 734 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 735 } 736 737 /** 738 * Returns true if activities contained in this stack can request visible behind by 739 * calling {@link Activity#requestVisibleBehind}. 740 */ 741 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 742 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 743 } 744 745 /** 746 * Returns true if this stack may be scaled without resizing, 747 * and windows within may need to be configured as such. 748 */ 749 public static boolean windowsAreScaleable(int stackId) { 750 return stackId == PINNED_STACK_ID; 751 } 752 753 /** 754 * Returns true if windows in this stack should be given move animations 755 * by default. 756 */ 757 public static boolean hasMovementAnimations(int stackId) { 758 return stackId != PINNED_STACK_ID; 759 } 760 761 /** Returns true if the input stack and its content can affect the device orientation. */ 762 public static boolean canSpecifyOrientation(int stackId) { 763 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 764 } 765 } 766 767 /** 768 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 769 * specifies the position of the created docked stack at the top half of the screen if 770 * in portrait mode or at the left half of the screen if in landscape mode. 771 * @hide 772 */ 773 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 774 775 /** 776 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 777 * specifies the position of the created docked stack at the bottom half of the screen if 778 * in portrait mode or at the right half of the screen if in landscape mode. 779 * @hide 780 */ 781 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 782 783 /** 784 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 785 * that the resize doesn't need to preserve the window, and can be skipped if bounds 786 * is unchanged. This mode is used by window manager in most cases. 787 * @hide 788 */ 789 public static final int RESIZE_MODE_SYSTEM = 0; 790 791 /** 792 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 793 * that the resize should preserve the window if possible. 794 * @hide 795 */ 796 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 797 798 /** 799 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 800 * that the resize should be performed even if the bounds appears unchanged. 801 * @hide 802 */ 803 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 804 805 /** 806 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 807 * manager during a screen rotation. 808 * @hide 809 */ 810 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 811 812 /** 813 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 814 * resize is due to a drag action. 815 * @hide 816 */ 817 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 818 819 /** 820 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 821 * that the resize should preserve the window if possible, and should not be skipped 822 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 823 * is ending. 824 * @hide 825 */ 826 public static final int RESIZE_MODE_USER_FORCED = 827 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 828 829 /** @hide */ 830 public int getFrontActivityScreenCompatMode() { 831 try { 832 return getService().getFrontActivityScreenCompatMode(); 833 } catch (RemoteException e) { 834 throw e.rethrowFromSystemServer(); 835 } 836 } 837 838 /** @hide */ 839 public void setFrontActivityScreenCompatMode(int mode) { 840 try { 841 getService().setFrontActivityScreenCompatMode(mode); 842 } catch (RemoteException e) { 843 throw e.rethrowFromSystemServer(); 844 } 845 } 846 847 /** @hide */ 848 public int getPackageScreenCompatMode(String packageName) { 849 try { 850 return getService().getPackageScreenCompatMode(packageName); 851 } catch (RemoteException e) { 852 throw e.rethrowFromSystemServer(); 853 } 854 } 855 856 /** @hide */ 857 public void setPackageScreenCompatMode(String packageName, int mode) { 858 try { 859 getService().setPackageScreenCompatMode(packageName, mode); 860 } catch (RemoteException e) { 861 throw e.rethrowFromSystemServer(); 862 } 863 } 864 865 /** @hide */ 866 public boolean getPackageAskScreenCompat(String packageName) { 867 try { 868 return getService().getPackageAskScreenCompat(packageName); 869 } catch (RemoteException e) { 870 throw e.rethrowFromSystemServer(); 871 } 872 } 873 874 /** @hide */ 875 public void setPackageAskScreenCompat(String packageName, boolean ask) { 876 try { 877 getService().setPackageAskScreenCompat(packageName, ask); 878 } catch (RemoteException e) { 879 throw e.rethrowFromSystemServer(); 880 } 881 } 882 883 /** 884 * Return the approximate per-application memory class of the current 885 * device. This gives you an idea of how hard a memory limit you should 886 * impose on your application to let the overall system work best. The 887 * returned value is in megabytes; the baseline Android memory class is 888 * 16 (which happens to be the Java heap limit of those devices); some 889 * device with more memory may return 24 or even higher numbers. 890 */ 891 public int getMemoryClass() { 892 return staticGetMemoryClass(); 893 } 894 895 /** @hide */ 896 static public int staticGetMemoryClass() { 897 // Really brain dead right now -- just take this from the configured 898 // vm heap size, and assume it is in megabytes and thus ends with "m". 899 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 900 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 901 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 902 } 903 return staticGetLargeMemoryClass(); 904 } 905 906 /** 907 * Return the approximate per-application memory class of the current 908 * device when an application is running with a large heap. This is the 909 * space available for memory-intensive applications; most applications 910 * should not need this amount of memory, and should instead stay with the 911 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 912 * This may be the same size as {@link #getMemoryClass()} on memory 913 * constrained devices, or it may be significantly larger on devices with 914 * a large amount of available RAM. 915 * 916 * <p>The is the size of the application's Dalvik heap if it has 917 * specified <code>android:largeHeap="true"</code> in its manifest. 918 */ 919 public int getLargeMemoryClass() { 920 return staticGetLargeMemoryClass(); 921 } 922 923 /** @hide */ 924 static public int staticGetLargeMemoryClass() { 925 // Really brain dead right now -- just take this from the configured 926 // vm heap size, and assume it is in megabytes and thus ends with "m". 927 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 928 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 929 } 930 931 /** 932 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 933 * is ultimately up to the device configuration, but currently it generally means 934 * something in the class of a 512MB device with about a 800x480 or less screen. 935 * This is mostly intended to be used by apps to determine whether they should turn 936 * off certain features that require more RAM. 937 */ 938 public boolean isLowRamDevice() { 939 return isLowRamDeviceStatic(); 940 } 941 942 /** @hide */ 943 public static boolean isLowRamDeviceStatic() { 944 return RoSystemProperties.CONFIG_LOW_RAM; 945 } 946 947 /** 948 * Used by persistent processes to determine if they are running on a 949 * higher-end device so should be okay using hardware drawing acceleration 950 * (which tends to consume a lot more RAM). 951 * @hide 952 */ 953 static public boolean isHighEndGfx() { 954 return !isLowRamDeviceStatic() && 955 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 956 } 957 958 /** 959 * Return the maximum number of recents entries that we will maintain and show. 960 * @hide 961 */ 962 static public int getMaxRecentTasksStatic() { 963 if (gMaxRecentTasks < 0) { 964 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 965 } 966 return gMaxRecentTasks; 967 } 968 969 /** 970 * Return the default limit on the number of recents that an app can make. 971 * @hide 972 */ 973 static public int getDefaultAppRecentsLimitStatic() { 974 return getMaxRecentTasksStatic() / 6; 975 } 976 977 /** 978 * Return the maximum limit on the number of recents that an app can make. 979 * @hide 980 */ 981 static public int getMaxAppRecentsLimitStatic() { 982 return getMaxRecentTasksStatic() / 2; 983 } 984 985 /** 986 * Returns true if the system supports at least one form of multi-window. 987 * E.g. freeform, split-screen, picture-in-picture. 988 * @hide 989 */ 990 static public boolean supportsMultiWindow() { 991 return !isLowRamDeviceStatic() 992 && Resources.getSystem().getBoolean( 993 com.android.internal.R.bool.config_supportsMultiWindow); 994 } 995 996 /** 997 * Information you can set and retrieve about the current activity within the recent task list. 998 */ 999 public static class TaskDescription implements Parcelable { 1000 /** @hide */ 1001 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1002 private static final String ATTR_TASKDESCRIPTIONLABEL = 1003 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1004 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1005 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1006 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1007 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1008 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1009 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1010 1011 private String mLabel; 1012 private Bitmap mIcon; 1013 private String mIconFilename; 1014 private int mColorPrimary; 1015 private int mColorBackground; 1016 1017 /** 1018 * Creates the TaskDescription to the specified values. 1019 * 1020 * @param label A label and description of the current state of this task. 1021 * @param icon An icon that represents the current state of this task. 1022 * @param colorPrimary A color to override the theme's primary color. This color must be 1023 * opaque. 1024 */ 1025 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1026 this(label, icon, null, colorPrimary, 0); 1027 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1028 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1029 } 1030 } 1031 1032 /** 1033 * Creates the TaskDescription to the specified values. 1034 * 1035 * @param label A label and description of the current state of this activity. 1036 * @param icon An icon that represents the current state of this activity. 1037 */ 1038 public TaskDescription(String label, Bitmap icon) { 1039 this(label, icon, null, 0, 0); 1040 } 1041 1042 /** 1043 * Creates the TaskDescription to the specified values. 1044 * 1045 * @param label A label and description of the current state of this activity. 1046 */ 1047 public TaskDescription(String label) { 1048 this(label, null, null, 0, 0); 1049 } 1050 1051 /** 1052 * Creates an empty TaskDescription. 1053 */ 1054 public TaskDescription() { 1055 this(null, null, null, 0, 0); 1056 } 1057 1058 /** @hide */ 1059 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1060 int colorBackground) { 1061 mLabel = label; 1062 mIcon = icon; 1063 mIconFilename = iconFilename; 1064 mColorPrimary = colorPrimary; 1065 mColorBackground = colorBackground; 1066 } 1067 1068 /** 1069 * Creates a copy of another TaskDescription. 1070 */ 1071 public TaskDescription(TaskDescription td) { 1072 copyFrom(td); 1073 } 1074 1075 /** 1076 * Copies this the values from another TaskDescription. 1077 * @hide 1078 */ 1079 public void copyFrom(TaskDescription other) { 1080 mLabel = other.mLabel; 1081 mIcon = other.mIcon; 1082 mIconFilename = other.mIconFilename; 1083 mColorPrimary = other.mColorPrimary; 1084 mColorBackground = other.mColorBackground; 1085 } 1086 1087 private TaskDescription(Parcel source) { 1088 readFromParcel(source); 1089 } 1090 1091 /** 1092 * Sets the label for this task description. 1093 * @hide 1094 */ 1095 public void setLabel(String label) { 1096 mLabel = label; 1097 } 1098 1099 /** 1100 * Sets the primary color for this task description. 1101 * @hide 1102 */ 1103 public void setPrimaryColor(int primaryColor) { 1104 // Ensure that the given color is valid 1105 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1106 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1107 } 1108 mColorPrimary = primaryColor; 1109 } 1110 1111 /** 1112 * Sets the background color for this task description. 1113 * @hide 1114 */ 1115 public void setBackgroundColor(int backgroundColor) { 1116 // Ensure that the given color is valid 1117 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1118 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1119 } 1120 mColorBackground = backgroundColor; 1121 } 1122 1123 /** 1124 * Sets the icon for this task description. 1125 * @hide 1126 */ 1127 public void setIcon(Bitmap icon) { 1128 mIcon = icon; 1129 } 1130 1131 /** 1132 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1133 * bitmap. 1134 * @hide 1135 */ 1136 public void setIconFilename(String iconFilename) { 1137 mIconFilename = iconFilename; 1138 mIcon = null; 1139 } 1140 1141 /** 1142 * @return The label and description of the current state of this task. 1143 */ 1144 public String getLabel() { 1145 return mLabel; 1146 } 1147 1148 /** 1149 * @return The icon that represents the current state of this task. 1150 */ 1151 public Bitmap getIcon() { 1152 if (mIcon != null) { 1153 return mIcon; 1154 } 1155 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1156 } 1157 1158 /** @hide */ 1159 public String getIconFilename() { 1160 return mIconFilename; 1161 } 1162 1163 /** @hide */ 1164 public Bitmap getInMemoryIcon() { 1165 return mIcon; 1166 } 1167 1168 /** @hide */ 1169 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1170 if (iconFilename != null) { 1171 try { 1172 return getService().getTaskDescriptionIcon(iconFilename, 1173 userId); 1174 } catch (RemoteException e) { 1175 throw e.rethrowFromSystemServer(); 1176 } 1177 } 1178 return null; 1179 } 1180 1181 /** 1182 * @return The color override on the theme's primary color. 1183 */ 1184 public int getPrimaryColor() { 1185 return mColorPrimary; 1186 } 1187 1188 /** 1189 * @return The background color. 1190 * @hide 1191 */ 1192 public int getBackgroundColor() { 1193 return mColorBackground; 1194 } 1195 1196 /** @hide */ 1197 public void saveToXml(XmlSerializer out) throws IOException { 1198 if (mLabel != null) { 1199 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1200 } 1201 if (mColorPrimary != 0) { 1202 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1203 Integer.toHexString(mColorPrimary)); 1204 } 1205 if (mColorBackground != 0) { 1206 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1207 Integer.toHexString(mColorBackground)); 1208 } 1209 if (mIconFilename != null) { 1210 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1211 } 1212 } 1213 1214 /** @hide */ 1215 public void restoreFromXml(String attrName, String attrValue) { 1216 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1217 setLabel(attrValue); 1218 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1219 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1220 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1221 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1222 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1223 setIconFilename(attrValue); 1224 } 1225 } 1226 1227 @Override 1228 public int describeContents() { 1229 return 0; 1230 } 1231 1232 @Override 1233 public void writeToParcel(Parcel dest, int flags) { 1234 if (mLabel == null) { 1235 dest.writeInt(0); 1236 } else { 1237 dest.writeInt(1); 1238 dest.writeString(mLabel); 1239 } 1240 if (mIcon == null) { 1241 dest.writeInt(0); 1242 } else { 1243 dest.writeInt(1); 1244 mIcon.writeToParcel(dest, 0); 1245 } 1246 dest.writeInt(mColorPrimary); 1247 dest.writeInt(mColorBackground); 1248 if (mIconFilename == null) { 1249 dest.writeInt(0); 1250 } else { 1251 dest.writeInt(1); 1252 dest.writeString(mIconFilename); 1253 } 1254 } 1255 1256 public void readFromParcel(Parcel source) { 1257 mLabel = source.readInt() > 0 ? source.readString() : null; 1258 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1259 mColorPrimary = source.readInt(); 1260 mColorBackground = source.readInt(); 1261 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1262 } 1263 1264 public static final Creator<TaskDescription> CREATOR 1265 = new Creator<TaskDescription>() { 1266 public TaskDescription createFromParcel(Parcel source) { 1267 return new TaskDescription(source); 1268 } 1269 public TaskDescription[] newArray(int size) { 1270 return new TaskDescription[size]; 1271 } 1272 }; 1273 1274 @Override 1275 public String toString() { 1276 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1277 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1278 " colorBackground: " + mColorBackground; 1279 } 1280 } 1281 1282 /** 1283 * Information you can retrieve about tasks that the user has most recently 1284 * started or visited. 1285 */ 1286 public static class RecentTaskInfo implements Parcelable { 1287 /** 1288 * If this task is currently running, this is the identifier for it. 1289 * If it is not running, this will be -1. 1290 */ 1291 public int id; 1292 1293 /** 1294 * The true identifier of this task, valid even if it is not running. 1295 */ 1296 public int persistentId; 1297 1298 /** 1299 * The original Intent used to launch the task. You can use this 1300 * Intent to re-launch the task (if it is no longer running) or bring 1301 * the current task to the front. 1302 */ 1303 public Intent baseIntent; 1304 1305 /** 1306 * If this task was started from an alias, this is the actual 1307 * activity component that was initially started; the component of 1308 * the baseIntent in this case is the name of the actual activity 1309 * implementation that the alias referred to. Otherwise, this is null. 1310 */ 1311 public ComponentName origActivity; 1312 1313 /** 1314 * The actual activity component that started the task. 1315 * @hide 1316 */ 1317 @Nullable 1318 public ComponentName realActivity; 1319 1320 /** 1321 * Description of the task's last state. 1322 */ 1323 public CharSequence description; 1324 1325 /** 1326 * The id of the ActivityStack this Task was on most recently. 1327 * @hide 1328 */ 1329 public int stackId; 1330 1331 /** 1332 * The id of the user the task was running as. 1333 * @hide 1334 */ 1335 public int userId; 1336 1337 /** 1338 * The first time this task was active. 1339 * @hide 1340 */ 1341 public long firstActiveTime; 1342 1343 /** 1344 * The last time this task was active. 1345 * @hide 1346 */ 1347 public long lastActiveTime; 1348 1349 /** 1350 * The recent activity values for the highest activity in the stack to have set the values. 1351 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1352 */ 1353 public TaskDescription taskDescription; 1354 1355 /** 1356 * Task affiliation for grouping with other tasks. 1357 */ 1358 public int affiliatedTaskId; 1359 1360 /** 1361 * Task affiliation color of the source task with the affiliated task id. 1362 * 1363 * @hide 1364 */ 1365 public int affiliatedTaskColor; 1366 1367 /** 1368 * The component launched as the first activity in the task. 1369 * This can be considered the "application" of this task. 1370 */ 1371 public ComponentName baseActivity; 1372 1373 /** 1374 * The activity component at the top of the history stack of the task. 1375 * This is what the user is currently doing. 1376 */ 1377 public ComponentName topActivity; 1378 1379 /** 1380 * Number of activities in this task. 1381 */ 1382 public int numActivities; 1383 1384 /** 1385 * The bounds of the task. 1386 * @hide 1387 */ 1388 public Rect bounds; 1389 1390 /** 1391 * True if the task can go in the docked stack. 1392 * @hide 1393 */ 1394 public boolean isDockable; 1395 1396 /** 1397 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1398 * @hide 1399 */ 1400 public int resizeMode; 1401 1402 public RecentTaskInfo() { 1403 } 1404 1405 @Override 1406 public int describeContents() { 1407 return 0; 1408 } 1409 1410 @Override 1411 public void writeToParcel(Parcel dest, int flags) { 1412 dest.writeInt(id); 1413 dest.writeInt(persistentId); 1414 if (baseIntent != null) { 1415 dest.writeInt(1); 1416 baseIntent.writeToParcel(dest, 0); 1417 } else { 1418 dest.writeInt(0); 1419 } 1420 ComponentName.writeToParcel(origActivity, dest); 1421 ComponentName.writeToParcel(realActivity, dest); 1422 TextUtils.writeToParcel(description, dest, 1423 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1424 if (taskDescription != null) { 1425 dest.writeInt(1); 1426 taskDescription.writeToParcel(dest, 0); 1427 } else { 1428 dest.writeInt(0); 1429 } 1430 dest.writeInt(stackId); 1431 dest.writeInt(userId); 1432 dest.writeLong(firstActiveTime); 1433 dest.writeLong(lastActiveTime); 1434 dest.writeInt(affiliatedTaskId); 1435 dest.writeInt(affiliatedTaskColor); 1436 ComponentName.writeToParcel(baseActivity, dest); 1437 ComponentName.writeToParcel(topActivity, dest); 1438 dest.writeInt(numActivities); 1439 if (bounds != null) { 1440 dest.writeInt(1); 1441 bounds.writeToParcel(dest, 0); 1442 } else { 1443 dest.writeInt(0); 1444 } 1445 dest.writeInt(isDockable ? 1 : 0); 1446 dest.writeInt(resizeMode); 1447 } 1448 1449 public void readFromParcel(Parcel source) { 1450 id = source.readInt(); 1451 persistentId = source.readInt(); 1452 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1453 origActivity = ComponentName.readFromParcel(source); 1454 realActivity = ComponentName.readFromParcel(source); 1455 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1456 taskDescription = source.readInt() > 0 ? 1457 TaskDescription.CREATOR.createFromParcel(source) : null; 1458 stackId = source.readInt(); 1459 userId = source.readInt(); 1460 firstActiveTime = source.readLong(); 1461 lastActiveTime = source.readLong(); 1462 affiliatedTaskId = source.readInt(); 1463 affiliatedTaskColor = source.readInt(); 1464 baseActivity = ComponentName.readFromParcel(source); 1465 topActivity = ComponentName.readFromParcel(source); 1466 numActivities = source.readInt(); 1467 bounds = source.readInt() > 0 ? 1468 Rect.CREATOR.createFromParcel(source) : null; 1469 isDockable = source.readInt() == 1; 1470 resizeMode = source.readInt(); 1471 } 1472 1473 public static final Creator<RecentTaskInfo> CREATOR 1474 = new Creator<RecentTaskInfo>() { 1475 public RecentTaskInfo createFromParcel(Parcel source) { 1476 return new RecentTaskInfo(source); 1477 } 1478 public RecentTaskInfo[] newArray(int size) { 1479 return new RecentTaskInfo[size]; 1480 } 1481 }; 1482 1483 private RecentTaskInfo(Parcel source) { 1484 readFromParcel(source); 1485 } 1486 } 1487 1488 /** 1489 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1490 * that have set their 1491 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1492 */ 1493 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1494 1495 /** 1496 * Provides a list that does not contain any 1497 * recent tasks that currently are not available to the user. 1498 */ 1499 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1500 1501 /** 1502 * Provides a list that contains recent tasks for all 1503 * profiles of a user. 1504 * @hide 1505 */ 1506 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1507 1508 /** 1509 * Ignores all tasks that are on the home stack. 1510 * @hide 1511 */ 1512 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1513 1514 /** 1515 * Ignores the top task in the docked stack. 1516 * @hide 1517 */ 1518 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1519 1520 /** 1521 * Ignores all tasks that are on the pinned stack. 1522 * @hide 1523 */ 1524 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1525 1526 /** 1527 * <p></p>Return a list of the tasks that the user has recently launched, with 1528 * the most recent being first and older ones after in order. 1529 * 1530 * <p><b>Note: this method is only intended for debugging and presenting 1531 * task management user interfaces</b>. This should never be used for 1532 * core logic in an application, such as deciding between different 1533 * behaviors based on the information found here. Such uses are 1534 * <em>not</em> supported, and will likely break in the future. For 1535 * example, if multiple applications can be actively running at the 1536 * same time, assumptions made about the meaning of the data here for 1537 * purposes of control flow will be incorrect.</p> 1538 * 1539 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1540 * no longer available to third party applications: the introduction of 1541 * document-centric recents means 1542 * it can leak personal information to the caller. For backwards compatibility, 1543 * it will still return a small subset of its data: at least the caller's 1544 * own tasks (though see {@link #getAppTasks()} for the correct supported 1545 * way to retrieve that information), and possibly some other tasks 1546 * such as home that are known to not be sensitive. 1547 * 1548 * @param maxNum The maximum number of entries to return in the list. The 1549 * actual number returned may be smaller, depending on how many tasks the 1550 * user has started and the maximum number the system can remember. 1551 * @param flags Information about what to return. May be any combination 1552 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1553 * 1554 * @return Returns a list of RecentTaskInfo records describing each of 1555 * the recent tasks. 1556 */ 1557 @Deprecated 1558 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1559 throws SecurityException { 1560 try { 1561 return getService().getRecentTasks(maxNum, 1562 flags, UserHandle.myUserId()).getList(); 1563 } catch (RemoteException e) { 1564 throw e.rethrowFromSystemServer(); 1565 } 1566 } 1567 1568 /** 1569 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1570 * specific user. It requires holding 1571 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1572 * @param maxNum The maximum number of entries to return in the list. The 1573 * actual number returned may be smaller, depending on how many tasks the 1574 * user has started and the maximum number the system can remember. 1575 * @param flags Information about what to return. May be any combination 1576 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1577 * 1578 * @return Returns a list of RecentTaskInfo records describing each of 1579 * the recent tasks. Most recently activated tasks go first. 1580 * 1581 * @hide 1582 */ 1583 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1584 throws SecurityException { 1585 try { 1586 return getService().getRecentTasks(maxNum, 1587 flags, userId).getList(); 1588 } catch (RemoteException e) { 1589 throw e.rethrowFromSystemServer(); 1590 } 1591 } 1592 1593 /** 1594 * Information you can retrieve about a particular task that is currently 1595 * "running" in the system. Note that a running task does not mean the 1596 * given task actually has a process it is actively running in; it simply 1597 * means that the user has gone to it and never closed it, but currently 1598 * the system may have killed its process and is only holding on to its 1599 * last state in order to restart it when the user returns. 1600 */ 1601 public static class RunningTaskInfo implements Parcelable { 1602 /** 1603 * A unique identifier for this task. 1604 */ 1605 public int id; 1606 1607 /** 1608 * The stack that currently contains this task. 1609 * @hide 1610 */ 1611 public int stackId; 1612 1613 /** 1614 * The component launched as the first activity in the task. This can 1615 * be considered the "application" of this task. 1616 */ 1617 public ComponentName baseActivity; 1618 1619 /** 1620 * The activity component at the top of the history stack of the task. 1621 * This is what the user is currently doing. 1622 */ 1623 public ComponentName topActivity; 1624 1625 /** 1626 * Thumbnail representation of the task's current state. Currently 1627 * always null. 1628 */ 1629 public Bitmap thumbnail; 1630 1631 /** 1632 * Description of the task's current state. 1633 */ 1634 public CharSequence description; 1635 1636 /** 1637 * Number of activities in this task. 1638 */ 1639 public int numActivities; 1640 1641 /** 1642 * Number of activities that are currently running (not stopped 1643 * and persisted) in this task. 1644 */ 1645 public int numRunning; 1646 1647 /** 1648 * Last time task was run. For sorting. 1649 * @hide 1650 */ 1651 public long lastActiveTime; 1652 1653 /** 1654 * True if the task can go in the docked stack. 1655 * @hide 1656 */ 1657 public boolean isDockable; 1658 1659 /** 1660 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1661 * @hide 1662 */ 1663 public int resizeMode; 1664 1665 public RunningTaskInfo() { 1666 } 1667 1668 public int describeContents() { 1669 return 0; 1670 } 1671 1672 public void writeToParcel(Parcel dest, int flags) { 1673 dest.writeInt(id); 1674 dest.writeInt(stackId); 1675 ComponentName.writeToParcel(baseActivity, dest); 1676 ComponentName.writeToParcel(topActivity, dest); 1677 if (thumbnail != null) { 1678 dest.writeInt(1); 1679 thumbnail.writeToParcel(dest, 0); 1680 } else { 1681 dest.writeInt(0); 1682 } 1683 TextUtils.writeToParcel(description, dest, 1684 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1685 dest.writeInt(numActivities); 1686 dest.writeInt(numRunning); 1687 dest.writeInt(isDockable ? 1 : 0); 1688 dest.writeInt(resizeMode); 1689 } 1690 1691 public void readFromParcel(Parcel source) { 1692 id = source.readInt(); 1693 stackId = source.readInt(); 1694 baseActivity = ComponentName.readFromParcel(source); 1695 topActivity = ComponentName.readFromParcel(source); 1696 if (source.readInt() != 0) { 1697 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1698 } else { 1699 thumbnail = null; 1700 } 1701 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1702 numActivities = source.readInt(); 1703 numRunning = source.readInt(); 1704 isDockable = source.readInt() != 0; 1705 resizeMode = source.readInt(); 1706 } 1707 1708 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1709 public RunningTaskInfo createFromParcel(Parcel source) { 1710 return new RunningTaskInfo(source); 1711 } 1712 public RunningTaskInfo[] newArray(int size) { 1713 return new RunningTaskInfo[size]; 1714 } 1715 }; 1716 1717 private RunningTaskInfo(Parcel source) { 1718 readFromParcel(source); 1719 } 1720 } 1721 1722 /** 1723 * Get the list of tasks associated with the calling application. 1724 * 1725 * @return The list of tasks associated with the application making this call. 1726 * @throws SecurityException 1727 */ 1728 public List<ActivityManager.AppTask> getAppTasks() { 1729 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1730 List<IBinder> appTasks; 1731 try { 1732 appTasks = getService().getAppTasks(mContext.getPackageName()); 1733 } catch (RemoteException e) { 1734 throw e.rethrowFromSystemServer(); 1735 } 1736 int numAppTasks = appTasks.size(); 1737 for (int i = 0; i < numAppTasks; i++) { 1738 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1739 } 1740 return tasks; 1741 } 1742 1743 /** 1744 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1745 * with {@link #addAppTask}. 1746 */ 1747 public Size getAppTaskThumbnailSize() { 1748 synchronized (this) { 1749 ensureAppTaskThumbnailSizeLocked(); 1750 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1751 } 1752 } 1753 1754 private void ensureAppTaskThumbnailSizeLocked() { 1755 if (mAppTaskThumbnailSize == null) { 1756 try { 1757 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1758 } catch (RemoteException e) { 1759 throw e.rethrowFromSystemServer(); 1760 } 1761 } 1762 } 1763 1764 /** 1765 * Add a new {@link AppTask} for the calling application. This will create a new 1766 * recents entry that is added to the <b>end</b> of all existing recents. 1767 * 1768 * @param activity The activity that is adding the entry. This is used to help determine 1769 * the context that the new recents entry will be in. 1770 * @param intent The Intent that describes the recents entry. This is the same Intent that 1771 * you would have used to launch the activity for it. In generally you will want to set 1772 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1773 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1774 * entry will exist without an activity, so it doesn't make sense to not retain it when 1775 * its activity disappears. The given Intent here also must have an explicit ComponentName 1776 * set on it. 1777 * @param description Optional additional description information. 1778 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1779 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1780 * recreated in your process, probably in a way you don't like, before the recents entry 1781 * is added. 1782 * 1783 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1784 * most likely cause of failure is that there is no more room for more tasks for your app. 1785 */ 1786 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1787 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1788 Point size; 1789 synchronized (this) { 1790 ensureAppTaskThumbnailSizeLocked(); 1791 size = mAppTaskThumbnailSize; 1792 } 1793 final int tw = thumbnail.getWidth(); 1794 final int th = thumbnail.getHeight(); 1795 if (tw != size.x || th != size.y) { 1796 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1797 1798 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1799 float scale; 1800 float dx = 0, dy = 0; 1801 if (tw * size.x > size.y * th) { 1802 scale = (float) size.x / (float) th; 1803 dx = (size.y - tw * scale) * 0.5f; 1804 } else { 1805 scale = (float) size.y / (float) tw; 1806 dy = (size.x - th * scale) * 0.5f; 1807 } 1808 Matrix matrix = new Matrix(); 1809 matrix.setScale(scale, scale); 1810 matrix.postTranslate((int) (dx + 0.5f), 0); 1811 1812 Canvas canvas = new Canvas(bm); 1813 canvas.drawBitmap(thumbnail, matrix, null); 1814 canvas.setBitmap(null); 1815 1816 thumbnail = bm; 1817 } 1818 if (description == null) { 1819 description = new TaskDescription(); 1820 } 1821 try { 1822 return getService().addAppTask(activity.getActivityToken(), 1823 intent, description, thumbnail); 1824 } catch (RemoteException e) { 1825 throw e.rethrowFromSystemServer(); 1826 } 1827 } 1828 1829 /** 1830 * Return a list of the tasks that are currently running, with 1831 * the most recent being first and older ones after in order. Note that 1832 * "running" does not mean any of the task's code is currently loaded or 1833 * activity -- the task may have been frozen by the system, so that it 1834 * can be restarted in its previous state when next brought to the 1835 * foreground. 1836 * 1837 * <p><b>Note: this method is only intended for debugging and presenting 1838 * task management user interfaces</b>. This should never be used for 1839 * core logic in an application, such as deciding between different 1840 * behaviors based on the information found here. Such uses are 1841 * <em>not</em> supported, and will likely break in the future. For 1842 * example, if multiple applications can be actively running at the 1843 * same time, assumptions made about the meaning of the data here for 1844 * purposes of control flow will be incorrect.</p> 1845 * 1846 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1847 * is no longer available to third party 1848 * applications: the introduction of document-centric recents means 1849 * it can leak person information to the caller. For backwards compatibility, 1850 * it will still retu rn a small subset of its data: at least the caller's 1851 * own tasks, and possibly some other tasks 1852 * such as home that are known to not be sensitive. 1853 * 1854 * @param maxNum The maximum number of entries to return in the list. The 1855 * actual number returned may be smaller, depending on how many tasks the 1856 * user has started. 1857 * 1858 * @return Returns a list of RunningTaskInfo records describing each of 1859 * the running tasks. 1860 */ 1861 @Deprecated 1862 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1863 throws SecurityException { 1864 try { 1865 return getService().getTasks(maxNum, 0); 1866 } catch (RemoteException e) { 1867 throw e.rethrowFromSystemServer(); 1868 } 1869 } 1870 1871 /** 1872 * Completely remove the given task. 1873 * 1874 * @param taskId Identifier of the task to be removed. 1875 * @return Returns true if the given task was found and removed. 1876 * 1877 * @hide 1878 */ 1879 public boolean removeTask(int taskId) throws SecurityException { 1880 try { 1881 return getService().removeTask(taskId); 1882 } catch (RemoteException e) { 1883 throw e.rethrowFromSystemServer(); 1884 } 1885 } 1886 1887 /** 1888 * Metadata related to the {@link TaskThumbnail}. 1889 * 1890 * @hide 1891 */ 1892 public static class TaskThumbnailInfo implements Parcelable { 1893 /** @hide */ 1894 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1895 private static final String ATTR_TASK_WIDTH = 1896 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1897 private static final String ATTR_TASK_HEIGHT = 1898 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1899 private static final String ATTR_SCREEN_ORIENTATION = 1900 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1901 1902 public int taskWidth; 1903 public int taskHeight; 1904 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1905 1906 public TaskThumbnailInfo() { 1907 // Do nothing 1908 } 1909 1910 private TaskThumbnailInfo(Parcel source) { 1911 readFromParcel(source); 1912 } 1913 1914 /** 1915 * Resets this info state to the initial state. 1916 * @hide 1917 */ 1918 public void reset() { 1919 taskWidth = 0; 1920 taskHeight = 0; 1921 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1922 } 1923 1924 /** 1925 * Copies from another ThumbnailInfo. 1926 */ 1927 public void copyFrom(TaskThumbnailInfo o) { 1928 taskWidth = o.taskWidth; 1929 taskHeight = o.taskHeight; 1930 screenOrientation = o.screenOrientation; 1931 } 1932 1933 /** @hide */ 1934 public void saveToXml(XmlSerializer out) throws IOException { 1935 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1936 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1937 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1938 } 1939 1940 /** @hide */ 1941 public void restoreFromXml(String attrName, String attrValue) { 1942 if (ATTR_TASK_WIDTH.equals(attrName)) { 1943 taskWidth = Integer.parseInt(attrValue); 1944 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1945 taskHeight = Integer.parseInt(attrValue); 1946 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1947 screenOrientation = Integer.parseInt(attrValue); 1948 } 1949 } 1950 1951 public int describeContents() { 1952 return 0; 1953 } 1954 1955 public void writeToParcel(Parcel dest, int flags) { 1956 dest.writeInt(taskWidth); 1957 dest.writeInt(taskHeight); 1958 dest.writeInt(screenOrientation); 1959 } 1960 1961 public void readFromParcel(Parcel source) { 1962 taskWidth = source.readInt(); 1963 taskHeight = source.readInt(); 1964 screenOrientation = source.readInt(); 1965 } 1966 1967 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1968 public TaskThumbnailInfo createFromParcel(Parcel source) { 1969 return new TaskThumbnailInfo(source); 1970 } 1971 public TaskThumbnailInfo[] newArray(int size) { 1972 return new TaskThumbnailInfo[size]; 1973 } 1974 }; 1975 } 1976 1977 /** @hide */ 1978 public static class TaskThumbnail implements Parcelable { 1979 public Bitmap mainThumbnail; 1980 public ParcelFileDescriptor thumbnailFileDescriptor; 1981 public TaskThumbnailInfo thumbnailInfo; 1982 1983 public TaskThumbnail() { 1984 } 1985 1986 private TaskThumbnail(Parcel source) { 1987 readFromParcel(source); 1988 } 1989 1990 public int describeContents() { 1991 if (thumbnailFileDescriptor != null) { 1992 return thumbnailFileDescriptor.describeContents(); 1993 } 1994 return 0; 1995 } 1996 1997 public void writeToParcel(Parcel dest, int flags) { 1998 if (mainThumbnail != null) { 1999 dest.writeInt(1); 2000 mainThumbnail.writeToParcel(dest, flags); 2001 } else { 2002 dest.writeInt(0); 2003 } 2004 if (thumbnailFileDescriptor != null) { 2005 dest.writeInt(1); 2006 thumbnailFileDescriptor.writeToParcel(dest, flags); 2007 } else { 2008 dest.writeInt(0); 2009 } 2010 if (thumbnailInfo != null) { 2011 dest.writeInt(1); 2012 thumbnailInfo.writeToParcel(dest, flags); 2013 } else { 2014 dest.writeInt(0); 2015 } 2016 } 2017 2018 public void readFromParcel(Parcel source) { 2019 if (source.readInt() != 0) { 2020 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2021 } else { 2022 mainThumbnail = null; 2023 } 2024 if (source.readInt() != 0) { 2025 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2026 } else { 2027 thumbnailFileDescriptor = null; 2028 } 2029 if (source.readInt() != 0) { 2030 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2031 } else { 2032 thumbnailInfo = null; 2033 } 2034 } 2035 2036 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2037 public TaskThumbnail createFromParcel(Parcel source) { 2038 return new TaskThumbnail(source); 2039 } 2040 public TaskThumbnail[] newArray(int size) { 2041 return new TaskThumbnail[size]; 2042 } 2043 }; 2044 } 2045 2046 /** @hide */ 2047 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2048 try { 2049 return getService().getTaskThumbnail(id); 2050 } catch (RemoteException e) { 2051 throw e.rethrowFromSystemServer(); 2052 } 2053 } 2054 2055 /** @hide */ 2056 public boolean isInHomeStack(int taskId) { 2057 try { 2058 return getService().isInHomeStack(taskId); 2059 } catch (RemoteException e) { 2060 throw e.rethrowFromSystemServer(); 2061 } 2062 } 2063 2064 /** 2065 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2066 * activity along with the task, so it is positioned immediately behind 2067 * the task. 2068 */ 2069 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2070 2071 /** 2072 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2073 * user-instigated action, so the current activity will not receive a 2074 * hint that the user is leaving. 2075 */ 2076 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2077 2078 /** 2079 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2080 * with a null options argument. 2081 * 2082 * @param taskId The identifier of the task to be moved, as found in 2083 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2084 * @param flags Additional operational flags, 0 or more of 2085 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2086 */ 2087 public void moveTaskToFront(int taskId, int flags) { 2088 moveTaskToFront(taskId, flags, null); 2089 } 2090 2091 /** 2092 * Ask that the task associated with a given task ID be moved to the 2093 * front of the stack, so it is now visible to the user. Requires that 2094 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2095 * or a SecurityException will be thrown. 2096 * 2097 * @param taskId The identifier of the task to be moved, as found in 2098 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2099 * @param flags Additional operational flags, 0 or more of 2100 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2101 * @param options Additional options for the operation, either null or 2102 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2103 * Context.startActivity(Intent, Bundle)}. 2104 */ 2105 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2106 try { 2107 getService().moveTaskToFront(taskId, flags, options); 2108 } catch (RemoteException e) { 2109 throw e.rethrowFromSystemServer(); 2110 } 2111 } 2112 2113 /** 2114 * Information you can retrieve about a particular Service that is 2115 * currently running in the system. 2116 */ 2117 public static class RunningServiceInfo implements Parcelable { 2118 /** 2119 * The service component. 2120 */ 2121 public ComponentName service; 2122 2123 /** 2124 * If non-zero, this is the process the service is running in. 2125 */ 2126 public int pid; 2127 2128 /** 2129 * The UID that owns this service. 2130 */ 2131 public int uid; 2132 2133 /** 2134 * The name of the process this service runs in. 2135 */ 2136 public String process; 2137 2138 /** 2139 * Set to true if the service has asked to run as a foreground process. 2140 */ 2141 public boolean foreground; 2142 2143 /** 2144 * The time when the service was first made active, either by someone 2145 * starting or binding to it. This 2146 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2147 */ 2148 public long activeSince; 2149 2150 /** 2151 * Set to true if this service has been explicitly started. 2152 */ 2153 public boolean started; 2154 2155 /** 2156 * Number of clients connected to the service. 2157 */ 2158 public int clientCount; 2159 2160 /** 2161 * Number of times the service's process has crashed while the service 2162 * is running. 2163 */ 2164 public int crashCount; 2165 2166 /** 2167 * The time when there was last activity in the service (either 2168 * explicit requests to start it or clients binding to it). This 2169 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2170 */ 2171 public long lastActivityTime; 2172 2173 /** 2174 * If non-zero, this service is not currently running, but scheduled to 2175 * restart at the given time. 2176 */ 2177 public long restarting; 2178 2179 /** 2180 * Bit for {@link #flags}: set if this service has been 2181 * explicitly started. 2182 */ 2183 public static final int FLAG_STARTED = 1<<0; 2184 2185 /** 2186 * Bit for {@link #flags}: set if the service has asked to 2187 * run as a foreground process. 2188 */ 2189 public static final int FLAG_FOREGROUND = 1<<1; 2190 2191 /** 2192 * Bit for {@link #flags): set if the service is running in a 2193 * core system process. 2194 */ 2195 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2196 2197 /** 2198 * Bit for {@link #flags): set if the service is running in a 2199 * persistent process. 2200 */ 2201 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2202 2203 /** 2204 * Running flags. 2205 */ 2206 public int flags; 2207 2208 /** 2209 * For special services that are bound to by system code, this is 2210 * the package that holds the binding. 2211 */ 2212 public String clientPackage; 2213 2214 /** 2215 * For special services that are bound to by system code, this is 2216 * a string resource providing a user-visible label for who the 2217 * client is. 2218 */ 2219 public int clientLabel; 2220 2221 public RunningServiceInfo() { 2222 } 2223 2224 public int describeContents() { 2225 return 0; 2226 } 2227 2228 public void writeToParcel(Parcel dest, int flags) { 2229 ComponentName.writeToParcel(service, dest); 2230 dest.writeInt(pid); 2231 dest.writeInt(uid); 2232 dest.writeString(process); 2233 dest.writeInt(foreground ? 1 : 0); 2234 dest.writeLong(activeSince); 2235 dest.writeInt(started ? 1 : 0); 2236 dest.writeInt(clientCount); 2237 dest.writeInt(crashCount); 2238 dest.writeLong(lastActivityTime); 2239 dest.writeLong(restarting); 2240 dest.writeInt(this.flags); 2241 dest.writeString(clientPackage); 2242 dest.writeInt(clientLabel); 2243 } 2244 2245 public void readFromParcel(Parcel source) { 2246 service = ComponentName.readFromParcel(source); 2247 pid = source.readInt(); 2248 uid = source.readInt(); 2249 process = source.readString(); 2250 foreground = source.readInt() != 0; 2251 activeSince = source.readLong(); 2252 started = source.readInt() != 0; 2253 clientCount = source.readInt(); 2254 crashCount = source.readInt(); 2255 lastActivityTime = source.readLong(); 2256 restarting = source.readLong(); 2257 flags = source.readInt(); 2258 clientPackage = source.readString(); 2259 clientLabel = source.readInt(); 2260 } 2261 2262 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2263 public RunningServiceInfo createFromParcel(Parcel source) { 2264 return new RunningServiceInfo(source); 2265 } 2266 public RunningServiceInfo[] newArray(int size) { 2267 return new RunningServiceInfo[size]; 2268 } 2269 }; 2270 2271 private RunningServiceInfo(Parcel source) { 2272 readFromParcel(source); 2273 } 2274 } 2275 2276 /** 2277 * Return a list of the services that are currently running. 2278 * 2279 * <p><b>Note: this method is only intended for debugging or implementing 2280 * service management type user interfaces.</b></p> 2281 * 2282 * @param maxNum The maximum number of entries to return in the list. The 2283 * actual number returned may be smaller, depending on how many services 2284 * are running. 2285 * 2286 * @return Returns a list of RunningServiceInfo records describing each of 2287 * the running tasks. 2288 */ 2289 public List<RunningServiceInfo> getRunningServices(int maxNum) 2290 throws SecurityException { 2291 try { 2292 return getService() 2293 .getServices(maxNum, 0); 2294 } catch (RemoteException e) { 2295 throw e.rethrowFromSystemServer(); 2296 } 2297 } 2298 2299 /** 2300 * Returns a PendingIntent you can start to show a control panel for the 2301 * given running service. If the service does not have a control panel, 2302 * null is returned. 2303 */ 2304 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2305 throws SecurityException { 2306 try { 2307 return getService() 2308 .getRunningServiceControlPanel(service); 2309 } catch (RemoteException e) { 2310 throw e.rethrowFromSystemServer(); 2311 } 2312 } 2313 2314 /** 2315 * Information you can retrieve about the available memory through 2316 * {@link ActivityManager#getMemoryInfo}. 2317 */ 2318 public static class MemoryInfo implements Parcelable { 2319 /** 2320 * The available memory on the system. This number should not 2321 * be considered absolute: due to the nature of the kernel, a significant 2322 * portion of this memory is actually in use and needed for the overall 2323 * system to run well. 2324 */ 2325 public long availMem; 2326 2327 /** 2328 * The total memory accessible by the kernel. This is basically the 2329 * RAM size of the device, not including below-kernel fixed allocations 2330 * like DMA buffers, RAM for the baseband CPU, etc. 2331 */ 2332 public long totalMem; 2333 2334 /** 2335 * The threshold of {@link #availMem} at which we consider memory to be 2336 * low and start killing background services and other non-extraneous 2337 * processes. 2338 */ 2339 public long threshold; 2340 2341 /** 2342 * Set to true if the system considers itself to currently be in a low 2343 * memory situation. 2344 */ 2345 public boolean lowMemory; 2346 2347 /** @hide */ 2348 public long hiddenAppThreshold; 2349 /** @hide */ 2350 public long secondaryServerThreshold; 2351 /** @hide */ 2352 public long visibleAppThreshold; 2353 /** @hide */ 2354 public long foregroundAppThreshold; 2355 2356 public MemoryInfo() { 2357 } 2358 2359 public int describeContents() { 2360 return 0; 2361 } 2362 2363 public void writeToParcel(Parcel dest, int flags) { 2364 dest.writeLong(availMem); 2365 dest.writeLong(totalMem); 2366 dest.writeLong(threshold); 2367 dest.writeInt(lowMemory ? 1 : 0); 2368 dest.writeLong(hiddenAppThreshold); 2369 dest.writeLong(secondaryServerThreshold); 2370 dest.writeLong(visibleAppThreshold); 2371 dest.writeLong(foregroundAppThreshold); 2372 } 2373 2374 public void readFromParcel(Parcel source) { 2375 availMem = source.readLong(); 2376 totalMem = source.readLong(); 2377 threshold = source.readLong(); 2378 lowMemory = source.readInt() != 0; 2379 hiddenAppThreshold = source.readLong(); 2380 secondaryServerThreshold = source.readLong(); 2381 visibleAppThreshold = source.readLong(); 2382 foregroundAppThreshold = source.readLong(); 2383 } 2384 2385 public static final Creator<MemoryInfo> CREATOR 2386 = new Creator<MemoryInfo>() { 2387 public MemoryInfo createFromParcel(Parcel source) { 2388 return new MemoryInfo(source); 2389 } 2390 public MemoryInfo[] newArray(int size) { 2391 return new MemoryInfo[size]; 2392 } 2393 }; 2394 2395 private MemoryInfo(Parcel source) { 2396 readFromParcel(source); 2397 } 2398 } 2399 2400 /** 2401 * Return general information about the memory state of the system. This 2402 * can be used to help decide how to manage your own memory, though note 2403 * that polling is not recommended and 2404 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2405 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2406 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2407 * level of your process as needed, which gives a better hint for how to 2408 * manage its memory. 2409 */ 2410 public void getMemoryInfo(MemoryInfo outInfo) { 2411 try { 2412 getService().getMemoryInfo(outInfo); 2413 } catch (RemoteException e) { 2414 throw e.rethrowFromSystemServer(); 2415 } 2416 } 2417 2418 /** 2419 * Information you can retrieve about an ActivityStack in the system. 2420 * @hide 2421 */ 2422 public static class StackInfo implements Parcelable { 2423 public int stackId; 2424 public Rect bounds = new Rect(); 2425 public int[] taskIds; 2426 public String[] taskNames; 2427 public Rect[] taskBounds; 2428 public int[] taskUserIds; 2429 public ComponentName topActivity; 2430 public int displayId; 2431 public int userId; 2432 public boolean visible; 2433 // Index of the stack in the display's stack list, can be used for comparison of stack order 2434 public int position; 2435 2436 @Override 2437 public int describeContents() { 2438 return 0; 2439 } 2440 2441 @Override 2442 public void writeToParcel(Parcel dest, int flags) { 2443 dest.writeInt(stackId); 2444 dest.writeInt(bounds.left); 2445 dest.writeInt(bounds.top); 2446 dest.writeInt(bounds.right); 2447 dest.writeInt(bounds.bottom); 2448 dest.writeIntArray(taskIds); 2449 dest.writeStringArray(taskNames); 2450 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2451 dest.writeInt(boundsCount); 2452 for (int i = 0; i < boundsCount; i++) { 2453 dest.writeInt(taskBounds[i].left); 2454 dest.writeInt(taskBounds[i].top); 2455 dest.writeInt(taskBounds[i].right); 2456 dest.writeInt(taskBounds[i].bottom); 2457 } 2458 dest.writeIntArray(taskUserIds); 2459 dest.writeInt(displayId); 2460 dest.writeInt(userId); 2461 dest.writeInt(visible ? 1 : 0); 2462 dest.writeInt(position); 2463 if (topActivity != null) { 2464 dest.writeInt(1); 2465 topActivity.writeToParcel(dest, 0); 2466 } else { 2467 dest.writeInt(0); 2468 } 2469 } 2470 2471 public void readFromParcel(Parcel source) { 2472 stackId = source.readInt(); 2473 bounds = new Rect( 2474 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2475 taskIds = source.createIntArray(); 2476 taskNames = source.createStringArray(); 2477 final int boundsCount = source.readInt(); 2478 if (boundsCount > 0) { 2479 taskBounds = new Rect[boundsCount]; 2480 for (int i = 0; i < boundsCount; i++) { 2481 taskBounds[i] = new Rect(); 2482 taskBounds[i].set( 2483 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2484 } 2485 } else { 2486 taskBounds = null; 2487 } 2488 taskUserIds = source.createIntArray(); 2489 displayId = source.readInt(); 2490 userId = source.readInt(); 2491 visible = source.readInt() > 0; 2492 position = source.readInt(); 2493 if (source.readInt() > 0) { 2494 topActivity = ComponentName.readFromParcel(source); 2495 } 2496 } 2497 2498 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2499 @Override 2500 public StackInfo createFromParcel(Parcel source) { 2501 return new StackInfo(source); 2502 } 2503 @Override 2504 public StackInfo[] newArray(int size) { 2505 return new StackInfo[size]; 2506 } 2507 }; 2508 2509 public StackInfo() { 2510 } 2511 2512 private StackInfo(Parcel source) { 2513 readFromParcel(source); 2514 } 2515 2516 public String toString(String prefix) { 2517 StringBuilder sb = new StringBuilder(256); 2518 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2519 sb.append(" bounds="); sb.append(bounds.toShortString()); 2520 sb.append(" displayId="); sb.append(displayId); 2521 sb.append(" userId="); sb.append(userId); 2522 sb.append("\n"); 2523 prefix = prefix + " "; 2524 for (int i = 0; i < taskIds.length; ++i) { 2525 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2526 sb.append(": "); sb.append(taskNames[i]); 2527 if (taskBounds != null) { 2528 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2529 } 2530 sb.append(" userId=").append(taskUserIds[i]); 2531 sb.append(" visible=").append(visible); 2532 if (topActivity != null) { 2533 sb.append(" topActivity=").append(topActivity); 2534 } 2535 sb.append("\n"); 2536 } 2537 return sb.toString(); 2538 } 2539 2540 @Override 2541 public String toString() { 2542 return toString(""); 2543 } 2544 } 2545 2546 /** 2547 * @hide 2548 */ 2549 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2550 try { 2551 return getService().clearApplicationUserData(packageName, 2552 observer, UserHandle.myUserId()); 2553 } catch (RemoteException e) { 2554 throw e.rethrowFromSystemServer(); 2555 } 2556 } 2557 2558 /** 2559 * Permits an application to erase its own data from disk. This is equivalent to 2560 * the user choosing to clear the app's data from within the device settings UI. It 2561 * erases all dynamic data associated with the app -- its private data and data in its 2562 * private area on external storage -- but does not remove the installed application 2563 * itself, nor any OBB files. 2564 * 2565 * @return {@code true} if the application successfully requested that the application's 2566 * data be erased; {@code false} otherwise. 2567 */ 2568 public boolean clearApplicationUserData() { 2569 return clearApplicationUserData(mContext.getPackageName(), null); 2570 } 2571 2572 2573 /** 2574 * Permits an application to get the persistent URI permissions granted to another. 2575 * 2576 * <p>Typically called by Settings. 2577 * 2578 * @param packageName application to look for the granted permissions 2579 * @return list of granted URI permissions 2580 * 2581 * @hide 2582 */ 2583 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2584 try { 2585 return getService().getGrantedUriPermissions(packageName, 2586 UserHandle.myUserId()); 2587 } catch (RemoteException e) { 2588 throw e.rethrowFromSystemServer(); 2589 } 2590 } 2591 2592 /** 2593 * Permits an application to clear the persistent URI permissions granted to another. 2594 * 2595 * <p>Typically called by Settings. 2596 * 2597 * @param packageName application to clear its granted permissions 2598 * 2599 * @hide 2600 */ 2601 public void clearGrantedUriPermissions(String packageName) { 2602 try { 2603 getService().clearGrantedUriPermissions(packageName, 2604 UserHandle.myUserId()); 2605 } catch (RemoteException e) { 2606 throw e.rethrowFromSystemServer(); 2607 } 2608 } 2609 2610 /** 2611 * Information you can retrieve about any processes that are in an error condition. 2612 */ 2613 public static class ProcessErrorStateInfo implements Parcelable { 2614 /** 2615 * Condition codes 2616 */ 2617 public static final int NO_ERROR = 0; 2618 public static final int CRASHED = 1; 2619 public static final int NOT_RESPONDING = 2; 2620 2621 /** 2622 * The condition that the process is in. 2623 */ 2624 public int condition; 2625 2626 /** 2627 * The process name in which the crash or error occurred. 2628 */ 2629 public String processName; 2630 2631 /** 2632 * The pid of this process; 0 if none 2633 */ 2634 public int pid; 2635 2636 /** 2637 * The kernel user-ID that has been assigned to this process; 2638 * currently this is not a unique ID (multiple applications can have 2639 * the same uid). 2640 */ 2641 public int uid; 2642 2643 /** 2644 * The activity name associated with the error, if known. May be null. 2645 */ 2646 public String tag; 2647 2648 /** 2649 * A short message describing the error condition. 2650 */ 2651 public String shortMsg; 2652 2653 /** 2654 * A long message describing the error condition. 2655 */ 2656 public String longMsg; 2657 2658 /** 2659 * The stack trace where the error originated. May be null. 2660 */ 2661 public String stackTrace; 2662 2663 /** 2664 * to be deprecated: This value will always be null. 2665 */ 2666 public byte[] crashData = null; 2667 2668 public ProcessErrorStateInfo() { 2669 } 2670 2671 @Override 2672 public int describeContents() { 2673 return 0; 2674 } 2675 2676 @Override 2677 public void writeToParcel(Parcel dest, int flags) { 2678 dest.writeInt(condition); 2679 dest.writeString(processName); 2680 dest.writeInt(pid); 2681 dest.writeInt(uid); 2682 dest.writeString(tag); 2683 dest.writeString(shortMsg); 2684 dest.writeString(longMsg); 2685 dest.writeString(stackTrace); 2686 } 2687 2688 public void readFromParcel(Parcel source) { 2689 condition = source.readInt(); 2690 processName = source.readString(); 2691 pid = source.readInt(); 2692 uid = source.readInt(); 2693 tag = source.readString(); 2694 shortMsg = source.readString(); 2695 longMsg = source.readString(); 2696 stackTrace = source.readString(); 2697 } 2698 2699 public static final Creator<ProcessErrorStateInfo> CREATOR = 2700 new Creator<ProcessErrorStateInfo>() { 2701 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2702 return new ProcessErrorStateInfo(source); 2703 } 2704 public ProcessErrorStateInfo[] newArray(int size) { 2705 return new ProcessErrorStateInfo[size]; 2706 } 2707 }; 2708 2709 private ProcessErrorStateInfo(Parcel source) { 2710 readFromParcel(source); 2711 } 2712 } 2713 2714 /** 2715 * Returns a list of any processes that are currently in an error condition. The result 2716 * will be null if all processes are running properly at this time. 2717 * 2718 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2719 * current error conditions (it will not return an empty list). This list ordering is not 2720 * specified. 2721 */ 2722 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2723 try { 2724 return getService().getProcessesInErrorState(); 2725 } catch (RemoteException e) { 2726 throw e.rethrowFromSystemServer(); 2727 } 2728 } 2729 2730 /** 2731 * Information you can retrieve about a running process. 2732 */ 2733 public static class RunningAppProcessInfo implements Parcelable { 2734 /** 2735 * The name of the process that this object is associated with 2736 */ 2737 public String processName; 2738 2739 /** 2740 * The pid of this process; 0 if none 2741 */ 2742 public int pid; 2743 2744 /** 2745 * The user id of this process. 2746 */ 2747 public int uid; 2748 2749 /** 2750 * All packages that have been loaded into the process. 2751 */ 2752 public String pkgList[]; 2753 2754 /** 2755 * Constant for {@link #flags}: this is an app that is unable to 2756 * correctly save its state when going to the background, 2757 * so it can not be killed while in the background. 2758 * @hide 2759 */ 2760 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2761 2762 /** 2763 * Constant for {@link #flags}: this process is associated with a 2764 * persistent system app. 2765 * @hide 2766 */ 2767 public static final int FLAG_PERSISTENT = 1<<1; 2768 2769 /** 2770 * Constant for {@link #flags}: this process is associated with a 2771 * persistent system app. 2772 * @hide 2773 */ 2774 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2775 2776 /** 2777 * Flags of information. May be any of 2778 * {@link #FLAG_CANT_SAVE_STATE}. 2779 * @hide 2780 */ 2781 public int flags; 2782 2783 /** 2784 * Last memory trim level reported to the process: corresponds to 2785 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2786 * ComponentCallbacks2.onTrimMemory(int)}. 2787 */ 2788 public int lastTrimLevel; 2789 2790 /** 2791 * Constant for {@link #importance}: This process is running the 2792 * foreground UI; that is, it is the thing currently at the top of the screen 2793 * that the user is interacting with. 2794 */ 2795 public static final int IMPORTANCE_FOREGROUND = 100; 2796 2797 /** 2798 * Constant for {@link #importance}: This process is running a foreground 2799 * service, for example to perform music playback even while the user is 2800 * not immediately in the app. This generally indicates that the process 2801 * is doing something the user actively cares about. 2802 */ 2803 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2804 2805 /** 2806 * Constant for {@link #importance}: This process is running the foreground 2807 * UI, but the device is asleep so it is not visible to the user. This means 2808 * the user is not really aware of the process, because they can not see or 2809 * interact with it, but it is quite important because it what they expect to 2810 * return to once unlocking the device. 2811 */ 2812 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2813 2814 /** 2815 * Constant for {@link #importance}: This process is running something 2816 * that is actively visible to the user, though not in the immediate 2817 * foreground. This may be running a window that is behind the current 2818 * foreground (so paused and with its state saved, not interacting with 2819 * the user, but visible to them to some degree); it may also be running 2820 * other services under the system's control that it inconsiders important. 2821 */ 2822 public static final int IMPORTANCE_VISIBLE = 200; 2823 2824 /** 2825 * Constant for {@link #importance}: This process is not something the user 2826 * is directly aware of, but is otherwise perceptable to them to some degree. 2827 */ 2828 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2829 2830 /** 2831 * Constant for {@link #importance}: This process is running an 2832 * application that can not save its state, and thus can't be killed 2833 * while in the background. 2834 * @hide 2835 */ 2836 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2837 2838 /** 2839 * Constant for {@link #importance}: This process is contains services 2840 * that should remain running. These are background services apps have 2841 * started, not something the user is aware of, so they may be killed by 2842 * the system relatively freely (though it is generally desired that they 2843 * stay running as long as they want to). 2844 */ 2845 public static final int IMPORTANCE_SERVICE = 300; 2846 2847 /** 2848 * Constant for {@link #importance}: This process process contains 2849 * background code that is expendable. 2850 */ 2851 public static final int IMPORTANCE_BACKGROUND = 400; 2852 2853 /** 2854 * Constant for {@link #importance}: This process is empty of any 2855 * actively running code. 2856 */ 2857 public static final int IMPORTANCE_EMPTY = 500; 2858 2859 /** 2860 * Constant for {@link #importance}: This process does not exist. 2861 */ 2862 public static final int IMPORTANCE_GONE = 1000; 2863 2864 /** @hide */ 2865 public static int procStateToImportance(int procState) { 2866 if (procState == PROCESS_STATE_NONEXISTENT) { 2867 return IMPORTANCE_GONE; 2868 } else if (procState >= PROCESS_STATE_HOME) { 2869 return IMPORTANCE_BACKGROUND; 2870 } else if (procState >= PROCESS_STATE_SERVICE) { 2871 return IMPORTANCE_SERVICE; 2872 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2873 return IMPORTANCE_CANT_SAVE_STATE; 2874 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2875 return IMPORTANCE_PERCEPTIBLE; 2876 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2877 return IMPORTANCE_VISIBLE; 2878 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2879 return IMPORTANCE_TOP_SLEEPING; 2880 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2881 return IMPORTANCE_FOREGROUND_SERVICE; 2882 } else { 2883 return IMPORTANCE_FOREGROUND; 2884 } 2885 } 2886 2887 /** @hide */ 2888 public static int importanceToProcState(int importance) { 2889 if (importance == IMPORTANCE_GONE) { 2890 return PROCESS_STATE_NONEXISTENT; 2891 } else if (importance >= IMPORTANCE_BACKGROUND) { 2892 return PROCESS_STATE_HOME; 2893 } else if (importance >= IMPORTANCE_SERVICE) { 2894 return PROCESS_STATE_SERVICE; 2895 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 2896 return PROCESS_STATE_HEAVY_WEIGHT; 2897 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 2898 return PROCESS_STATE_IMPORTANT_BACKGROUND; 2899 } else if (importance >= IMPORTANCE_VISIBLE) { 2900 return PROCESS_STATE_IMPORTANT_FOREGROUND; 2901 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 2902 return PROCESS_STATE_TOP_SLEEPING; 2903 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 2904 return PROCESS_STATE_FOREGROUND_SERVICE; 2905 } else { 2906 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 2907 } 2908 } 2909 2910 /** 2911 * The relative importance level that the system places on this 2912 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2913 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2914 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2915 * constants are numbered so that "more important" values are always 2916 * smaller than "less important" values. 2917 */ 2918 public int importance; 2919 2920 /** 2921 * An additional ordering within a particular {@link #importance} 2922 * category, providing finer-grained information about the relative 2923 * utility of processes within a category. This number means nothing 2924 * except that a smaller values are more recently used (and thus 2925 * more important). Currently an LRU value is only maintained for 2926 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2927 * be maintained in the future. 2928 */ 2929 public int lru; 2930 2931 /** 2932 * Constant for {@link #importanceReasonCode}: nothing special has 2933 * been specified for the reason for this level. 2934 */ 2935 public static final int REASON_UNKNOWN = 0; 2936 2937 /** 2938 * Constant for {@link #importanceReasonCode}: one of the application's 2939 * content providers is being used by another process. The pid of 2940 * the client process is in {@link #importanceReasonPid} and the 2941 * target provider in this process is in 2942 * {@link #importanceReasonComponent}. 2943 */ 2944 public static final int REASON_PROVIDER_IN_USE = 1; 2945 2946 /** 2947 * Constant for {@link #importanceReasonCode}: one of the application's 2948 * content providers is being used by another process. The pid of 2949 * the client process is in {@link #importanceReasonPid} and the 2950 * target provider in this process is in 2951 * {@link #importanceReasonComponent}. 2952 */ 2953 public static final int REASON_SERVICE_IN_USE = 2; 2954 2955 /** 2956 * The reason for {@link #importance}, if any. 2957 */ 2958 public int importanceReasonCode; 2959 2960 /** 2961 * For the specified values of {@link #importanceReasonCode}, this 2962 * is the process ID of the other process that is a client of this 2963 * process. This will be 0 if no other process is using this one. 2964 */ 2965 public int importanceReasonPid; 2966 2967 /** 2968 * For the specified values of {@link #importanceReasonCode}, this 2969 * is the name of the component that is being used in this process. 2970 */ 2971 public ComponentName importanceReasonComponent; 2972 2973 /** 2974 * When {@link #importanceReasonPid} is non-0, this is the importance 2975 * of the other pid. @hide 2976 */ 2977 public int importanceReasonImportance; 2978 2979 /** 2980 * Current process state, as per PROCESS_STATE_* constants. 2981 * @hide 2982 */ 2983 public int processState; 2984 2985 public RunningAppProcessInfo() { 2986 importance = IMPORTANCE_FOREGROUND; 2987 importanceReasonCode = REASON_UNKNOWN; 2988 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2989 } 2990 2991 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2992 processName = pProcessName; 2993 pid = pPid; 2994 pkgList = pArr; 2995 } 2996 2997 public int describeContents() { 2998 return 0; 2999 } 3000 3001 public void writeToParcel(Parcel dest, int flags) { 3002 dest.writeString(processName); 3003 dest.writeInt(pid); 3004 dest.writeInt(uid); 3005 dest.writeStringArray(pkgList); 3006 dest.writeInt(this.flags); 3007 dest.writeInt(lastTrimLevel); 3008 dest.writeInt(importance); 3009 dest.writeInt(lru); 3010 dest.writeInt(importanceReasonCode); 3011 dest.writeInt(importanceReasonPid); 3012 ComponentName.writeToParcel(importanceReasonComponent, dest); 3013 dest.writeInt(importanceReasonImportance); 3014 dest.writeInt(processState); 3015 } 3016 3017 public void readFromParcel(Parcel source) { 3018 processName = source.readString(); 3019 pid = source.readInt(); 3020 uid = source.readInt(); 3021 pkgList = source.readStringArray(); 3022 flags = source.readInt(); 3023 lastTrimLevel = source.readInt(); 3024 importance = source.readInt(); 3025 lru = source.readInt(); 3026 importanceReasonCode = source.readInt(); 3027 importanceReasonPid = source.readInt(); 3028 importanceReasonComponent = ComponentName.readFromParcel(source); 3029 importanceReasonImportance = source.readInt(); 3030 processState = source.readInt(); 3031 } 3032 3033 public static final Creator<RunningAppProcessInfo> CREATOR = 3034 new Creator<RunningAppProcessInfo>() { 3035 public RunningAppProcessInfo createFromParcel(Parcel source) { 3036 return new RunningAppProcessInfo(source); 3037 } 3038 public RunningAppProcessInfo[] newArray(int size) { 3039 return new RunningAppProcessInfo[size]; 3040 } 3041 }; 3042 3043 private RunningAppProcessInfo(Parcel source) { 3044 readFromParcel(source); 3045 } 3046 } 3047 3048 /** 3049 * Returns a list of application processes installed on external media 3050 * that are running on the device. 3051 * 3052 * <p><b>Note: this method is only intended for debugging or building 3053 * a user-facing process management UI.</b></p> 3054 * 3055 * @return Returns a list of ApplicationInfo records, or null if none 3056 * This list ordering is not specified. 3057 * @hide 3058 */ 3059 public List<ApplicationInfo> getRunningExternalApplications() { 3060 try { 3061 return getService().getRunningExternalApplications(); 3062 } catch (RemoteException e) { 3063 throw e.rethrowFromSystemServer(); 3064 } 3065 } 3066 3067 /** 3068 * Sets the memory trim mode for a process and schedules a memory trim operation. 3069 * 3070 * <p><b>Note: this method is only intended for testing framework.</b></p> 3071 * 3072 * @return Returns true if successful. 3073 * @hide 3074 */ 3075 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3076 try { 3077 return getService().setProcessMemoryTrimLevel(process, userId, 3078 level); 3079 } catch (RemoteException e) { 3080 throw e.rethrowFromSystemServer(); 3081 } 3082 } 3083 3084 /** 3085 * Returns a list of application processes that are running on the device. 3086 * 3087 * <p><b>Note: this method is only intended for debugging or building 3088 * a user-facing process management UI.</b></p> 3089 * 3090 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3091 * running processes (it will not return an empty list). This list ordering is not 3092 * specified. 3093 */ 3094 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3095 try { 3096 return getService().getRunningAppProcesses(); 3097 } catch (RemoteException e) { 3098 throw e.rethrowFromSystemServer(); 3099 } 3100 } 3101 3102 /** 3103 * Return the importance of a given package name, based on the processes that are 3104 * currently running. The return value is one of the importance constants defined 3105 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3106 * processes that this package has code running inside of. If there are no processes 3107 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3108 * @hide 3109 */ 3110 @SystemApi @TestApi 3111 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3112 public int getPackageImportance(String packageName) { 3113 try { 3114 int procState = getService().getPackageProcessState(packageName, 3115 mContext.getOpPackageName()); 3116 return RunningAppProcessInfo.procStateToImportance(procState); 3117 } catch (RemoteException e) { 3118 throw e.rethrowFromSystemServer(); 3119 } 3120 } 3121 3122 /** 3123 * Callback to get reports about changes to the importance of a uid. Use with 3124 * {@link #addOnUidImportanceListener}. 3125 * @hide 3126 */ 3127 @SystemApi @TestApi 3128 public interface OnUidImportanceListener { 3129 /** 3130 * The importance if a given uid has changed. Will be one of the importance 3131 * values in {@link RunningAppProcessInfo}; 3132 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3133 * when the uid is no longer running at all. This callback will happen on a thread 3134 * from a thread pool, not the main UI thread. 3135 * @param uid The uid whose importance has changed. 3136 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3137 */ 3138 void onUidImportance(int uid, int importance); 3139 } 3140 3141 /** 3142 * Start monitoring changes to the imoportance of uids running in the system. 3143 * @param listener The listener callback that will receive change reports. 3144 * @param importanceCutpoint The level of importance in which the caller is interested 3145 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3146 * is used here, you will receive a call each time a uids importance transitions between 3147 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3148 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3149 * 3150 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3151 * permission to use this feature.</p> 3152 * 3153 * @throws IllegalArgumentException If the listener is already registered. 3154 * @throws SecurityException If the caller does not hold 3155 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3156 * @hide 3157 */ 3158 @SystemApi @TestApi 3159 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3160 int importanceCutpoint) { 3161 synchronized (this) { 3162 if (mImportanceListeners.containsKey(listener)) { 3163 throw new IllegalArgumentException("Listener already registered: " + listener); 3164 } 3165 // TODO: implement the cut point in the system process to avoid IPCs. 3166 UidObserver observer = new UidObserver(listener); 3167 try { 3168 getService().registerUidObserver(observer, 3169 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3170 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3171 mContext.getOpPackageName()); 3172 } catch (RemoteException e) { 3173 throw e.rethrowFromSystemServer(); 3174 } 3175 mImportanceListeners.put(listener, observer); 3176 } 3177 } 3178 3179 /** 3180 * Remove an importance listener that was previously registered with 3181 * {@link #addOnUidImportanceListener}. 3182 * 3183 * @throws IllegalArgumentException If the listener is not registered. 3184 * @hide 3185 */ 3186 @SystemApi @TestApi 3187 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3188 synchronized (this) { 3189 UidObserver observer = mImportanceListeners.remove(listener); 3190 if (observer == null) { 3191 throw new IllegalArgumentException("Listener not registered: " + listener); 3192 } 3193 try { 3194 getService().unregisterUidObserver(observer); 3195 } catch (RemoteException e) { 3196 throw e.rethrowFromSystemServer(); 3197 } 3198 } 3199 } 3200 3201 /** 3202 * Return global memory state information for the calling process. This 3203 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3204 * only fields that will be filled in are 3205 * {@link RunningAppProcessInfo#pid}, 3206 * {@link RunningAppProcessInfo#uid}, 3207 * {@link RunningAppProcessInfo#lastTrimLevel}, 3208 * {@link RunningAppProcessInfo#importance}, 3209 * {@link RunningAppProcessInfo#lru}, and 3210 * {@link RunningAppProcessInfo#importanceReasonCode}. 3211 */ 3212 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3213 try { 3214 getService().getMyMemoryState(outState); 3215 } catch (RemoteException e) { 3216 throw e.rethrowFromSystemServer(); 3217 } 3218 } 3219 3220 /** 3221 * Return information about the memory usage of one or more processes. 3222 * 3223 * <p><b>Note: this method is only intended for debugging or building 3224 * a user-facing process management UI.</b></p> 3225 * 3226 * @param pids The pids of the processes whose memory usage is to be 3227 * retrieved. 3228 * @return Returns an array of memory information, one for each 3229 * requested pid. 3230 */ 3231 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3232 try { 3233 return getService().getProcessMemoryInfo(pids); 3234 } catch (RemoteException e) { 3235 throw e.rethrowFromSystemServer(); 3236 } 3237 } 3238 3239 /** 3240 * @deprecated This is now just a wrapper for 3241 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3242 * is no longer available to applications because it allows them to 3243 * break other applications by removing their alarms, stopping their 3244 * services, etc. 3245 */ 3246 @Deprecated 3247 public void restartPackage(String packageName) { 3248 killBackgroundProcesses(packageName); 3249 } 3250 3251 /** 3252 * Have the system immediately kill all background processes associated 3253 * with the given package. This is the same as the kernel killing those 3254 * processes to reclaim memory; the system will take care of restarting 3255 * these processes in the future as needed. 3256 * 3257 * <p>You must hold the permission 3258 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3259 * call this method. 3260 * 3261 * @param packageName The name of the package whose processes are to 3262 * be killed. 3263 */ 3264 public void killBackgroundProcesses(String packageName) { 3265 try { 3266 getService().killBackgroundProcesses(packageName, 3267 UserHandle.myUserId()); 3268 } catch (RemoteException e) { 3269 throw e.rethrowFromSystemServer(); 3270 } 3271 } 3272 3273 /** 3274 * Kills the specified UID. 3275 * @param uid The UID to kill. 3276 * @param reason The reason for the kill. 3277 * 3278 * @hide 3279 */ 3280 @SystemApi 3281 @RequiresPermission(Manifest.permission.KILL_UID) 3282 public void killUid(int uid, String reason) { 3283 try { 3284 getService().killUid(UserHandle.getAppId(uid), 3285 UserHandle.getUserId(uid), reason); 3286 } catch (RemoteException e) { 3287 throw e.rethrowFromSystemServer(); 3288 } 3289 } 3290 3291 /** 3292 * Have the system perform a force stop of everything associated with 3293 * the given application package. All processes that share its uid 3294 * will be killed, all services it has running stopped, all activities 3295 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3296 * broadcast will be sent, so that any of its registered alarms can 3297 * be stopped, notifications removed, etc. 3298 * 3299 * <p>You must hold the permission 3300 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3301 * call this method. 3302 * 3303 * @param packageName The name of the package to be stopped. 3304 * @param userId The user for which the running package is to be stopped. 3305 * 3306 * @hide This is not available to third party applications due to 3307 * it allowing them to break other applications by stopping their 3308 * services, removing their alarms, etc. 3309 */ 3310 public void forceStopPackageAsUser(String packageName, int userId) { 3311 try { 3312 getService().forceStopPackage(packageName, userId); 3313 } catch (RemoteException e) { 3314 throw e.rethrowFromSystemServer(); 3315 } 3316 } 3317 3318 /** 3319 * @see #forceStopPackageAsUser(String, int) 3320 * @hide 3321 */ 3322 public void forceStopPackage(String packageName) { 3323 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3324 } 3325 3326 /** 3327 * Get the device configuration attributes. 3328 */ 3329 public ConfigurationInfo getDeviceConfigurationInfo() { 3330 try { 3331 return getService().getDeviceConfigurationInfo(); 3332 } catch (RemoteException e) { 3333 throw e.rethrowFromSystemServer(); 3334 } 3335 } 3336 3337 /** 3338 * Get the preferred density of icons for the launcher. This is used when 3339 * custom drawables are created (e.g., for shortcuts). 3340 * 3341 * @return density in terms of DPI 3342 */ 3343 public int getLauncherLargeIconDensity() { 3344 final Resources res = mContext.getResources(); 3345 final int density = res.getDisplayMetrics().densityDpi; 3346 final int sw = res.getConfiguration().smallestScreenWidthDp; 3347 3348 if (sw < 600) { 3349 // Smaller than approx 7" tablets, use the regular icon size. 3350 return density; 3351 } 3352 3353 switch (density) { 3354 case DisplayMetrics.DENSITY_LOW: 3355 return DisplayMetrics.DENSITY_MEDIUM; 3356 case DisplayMetrics.DENSITY_MEDIUM: 3357 return DisplayMetrics.DENSITY_HIGH; 3358 case DisplayMetrics.DENSITY_TV: 3359 return DisplayMetrics.DENSITY_XHIGH; 3360 case DisplayMetrics.DENSITY_HIGH: 3361 return DisplayMetrics.DENSITY_XHIGH; 3362 case DisplayMetrics.DENSITY_XHIGH: 3363 return DisplayMetrics.DENSITY_XXHIGH; 3364 case DisplayMetrics.DENSITY_XXHIGH: 3365 return DisplayMetrics.DENSITY_XHIGH * 2; 3366 default: 3367 // The density is some abnormal value. Return some other 3368 // abnormal value that is a reasonable scaling of it. 3369 return (int)((density*1.5f)+.5f); 3370 } 3371 } 3372 3373 /** 3374 * Get the preferred launcher icon size. This is used when custom drawables 3375 * are created (e.g., for shortcuts). 3376 * 3377 * @return dimensions of square icons in terms of pixels 3378 */ 3379 public int getLauncherLargeIconSize() { 3380 return getLauncherLargeIconSizeInner(mContext); 3381 } 3382 3383 static int getLauncherLargeIconSizeInner(Context context) { 3384 final Resources res = context.getResources(); 3385 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3386 final int sw = res.getConfiguration().smallestScreenWidthDp; 3387 3388 if (sw < 600) { 3389 // Smaller than approx 7" tablets, use the regular icon size. 3390 return size; 3391 } 3392 3393 final int density = res.getDisplayMetrics().densityDpi; 3394 3395 switch (density) { 3396 case DisplayMetrics.DENSITY_LOW: 3397 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3398 case DisplayMetrics.DENSITY_MEDIUM: 3399 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3400 case DisplayMetrics.DENSITY_TV: 3401 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3402 case DisplayMetrics.DENSITY_HIGH: 3403 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3404 case DisplayMetrics.DENSITY_XHIGH: 3405 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3406 case DisplayMetrics.DENSITY_XXHIGH: 3407 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3408 default: 3409 // The density is some abnormal value. Return some other 3410 // abnormal value that is a reasonable scaling of it. 3411 return (int)((size*1.5f) + .5f); 3412 } 3413 } 3414 3415 /** 3416 * Returns "true" if the user interface is currently being messed with 3417 * by a monkey. 3418 */ 3419 public static boolean isUserAMonkey() { 3420 try { 3421 return getService().isUserAMonkey(); 3422 } catch (RemoteException e) { 3423 throw e.rethrowFromSystemServer(); 3424 } 3425 } 3426 3427 /** 3428 * Returns "true" if device is running in a test harness. 3429 */ 3430 public static boolean isRunningInTestHarness() { 3431 return SystemProperties.getBoolean("ro.test_harness", false); 3432 } 3433 3434 /** 3435 * Returns the launch count of each installed package. 3436 * 3437 * @hide 3438 */ 3439 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3440 try { 3441 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3442 ServiceManager.getService("usagestats")); 3443 if (usageStatsService == null) { 3444 return new HashMap<String, Integer>(); 3445 } 3446 3447 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3448 ActivityThread.currentPackageName()); 3449 if (allPkgUsageStats == null) { 3450 return new HashMap<String, Integer>(); 3451 } 3452 3453 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3454 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3455 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3456 } 3457 3458 return launchCounts; 3459 } catch (RemoteException e) { 3460 Log.w(TAG, "Could not query launch counts", e); 3461 return new HashMap<String, Integer>(); 3462 } 3463 }*/ 3464 3465 /** @hide */ 3466 public static int checkComponentPermission(String permission, int uid, 3467 int owningUid, boolean exported) { 3468 // Root, system server get to do everything. 3469 final int appId = UserHandle.getAppId(uid); 3470 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3471 return PackageManager.PERMISSION_GRANTED; 3472 } 3473 // Isolated processes don't get any permissions. 3474 if (UserHandle.isIsolated(uid)) { 3475 return PackageManager.PERMISSION_DENIED; 3476 } 3477 // If there is a uid that owns whatever is being accessed, it has 3478 // blanket access to it regardless of the permissions it requires. 3479 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3480 return PackageManager.PERMISSION_GRANTED; 3481 } 3482 // If the target is not exported, then nobody else can get to it. 3483 if (!exported) { 3484 /* 3485 RuntimeException here = new RuntimeException("here"); 3486 here.fillInStackTrace(); 3487 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3488 here); 3489 */ 3490 return PackageManager.PERMISSION_DENIED; 3491 } 3492 if (permission == null) { 3493 return PackageManager.PERMISSION_GRANTED; 3494 } 3495 try { 3496 return AppGlobals.getPackageManager() 3497 .checkUidPermission(permission, uid); 3498 } catch (RemoteException e) { 3499 throw e.rethrowFromSystemServer(); 3500 } 3501 } 3502 3503 /** @hide */ 3504 public static int checkUidPermission(String permission, int uid) { 3505 try { 3506 return AppGlobals.getPackageManager() 3507 .checkUidPermission(permission, uid); 3508 } catch (RemoteException e) { 3509 throw e.rethrowFromSystemServer(); 3510 } 3511 } 3512 3513 /** 3514 * @hide 3515 * Helper for dealing with incoming user arguments to system service calls. 3516 * Takes care of checking permissions and converting USER_CURRENT to the 3517 * actual current user. 3518 * 3519 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3520 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3521 * @param userId The user id argument supplied by the caller -- this is the user 3522 * they want to run as. 3523 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3524 * to get a USER_ALL returned and deal with it correctly. If false, 3525 * an exception will be thrown if USER_ALL is supplied. 3526 * @param requireFull If true, the caller must hold 3527 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3528 * different user than their current process; otherwise they must hold 3529 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3530 * @param name Optional textual name of the incoming call; only for generating error messages. 3531 * @param callerPackage Optional package name of caller; only for error messages. 3532 * 3533 * @return Returns the user ID that the call should run as. Will always be a concrete 3534 * user number, unless <var>allowAll</var> is true in which case it could also be 3535 * USER_ALL. 3536 */ 3537 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3538 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3539 if (UserHandle.getUserId(callingUid) == userId) { 3540 return userId; 3541 } 3542 try { 3543 return getService().handleIncomingUser(callingPid, 3544 callingUid, userId, allowAll, requireFull, name, callerPackage); 3545 } catch (RemoteException e) { 3546 throw e.rethrowFromSystemServer(); 3547 } 3548 } 3549 3550 /** 3551 * Gets the userId of the current foreground user. Requires system permissions. 3552 * @hide 3553 */ 3554 @SystemApi 3555 public static int getCurrentUser() { 3556 UserInfo ui; 3557 try { 3558 ui = getService().getCurrentUser(); 3559 return ui != null ? ui.id : 0; 3560 } catch (RemoteException e) { 3561 throw e.rethrowFromSystemServer(); 3562 } 3563 } 3564 3565 /** 3566 * @param userid the user's id. Zero indicates the default user. 3567 * @hide 3568 */ 3569 public boolean switchUser(int userid) { 3570 try { 3571 return getService().switchUser(userid); 3572 } catch (RemoteException e) { 3573 throw e.rethrowFromSystemServer(); 3574 } 3575 } 3576 3577 /** 3578 * Logs out current current foreground user by switching to the system user and stopping the 3579 * user being switched from. 3580 * @hide 3581 */ 3582 public static void logoutCurrentUser() { 3583 int currentUser = ActivityManager.getCurrentUser(); 3584 if (currentUser != UserHandle.USER_SYSTEM) { 3585 try { 3586 getService().switchUser(UserHandle.USER_SYSTEM); 3587 getService().stopUser(currentUser, /* force= */ false, null); 3588 } catch (RemoteException e) { 3589 e.rethrowFromSystemServer(); 3590 } 3591 } 3592 } 3593 3594 /** {@hide} */ 3595 public static final int FLAG_OR_STOPPED = 1 << 0; 3596 /** {@hide} */ 3597 public static final int FLAG_AND_LOCKED = 1 << 1; 3598 /** {@hide} */ 3599 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3600 /** {@hide} */ 3601 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3602 3603 /** 3604 * Return whether the given user is actively running. This means that 3605 * the user is in the "started" state, not "stopped" -- it is currently 3606 * allowed to run code through scheduled alarms, receiving broadcasts, 3607 * etc. A started user may be either the current foreground user or a 3608 * background user; the result here does not distinguish between the two. 3609 * @param userId the user's id. Zero indicates the default user. 3610 * @hide 3611 */ 3612 public boolean isUserRunning(int userId) { 3613 try { 3614 return getService().isUserRunning(userId, 0); 3615 } catch (RemoteException e) { 3616 throw e.rethrowFromSystemServer(); 3617 } 3618 } 3619 3620 /** {@hide} */ 3621 public boolean isVrModePackageEnabled(ComponentName component) { 3622 try { 3623 return getService().isVrModePackageEnabled(component); 3624 } catch (RemoteException e) { 3625 throw e.rethrowFromSystemServer(); 3626 } 3627 } 3628 3629 /** 3630 * Perform a system dump of various state associated with the given application 3631 * package name. This call blocks while the dump is being performed, so should 3632 * not be done on a UI thread. The data will be written to the given file 3633 * descriptor as text. An application must hold the 3634 * {@link android.Manifest.permission#DUMP} permission to make this call. 3635 * @param fd The file descriptor that the dump should be written to. The file 3636 * descriptor is <em>not</em> closed by this function; the caller continues to 3637 * own it. 3638 * @param packageName The name of the package that is to be dumped. 3639 */ 3640 public void dumpPackageState(FileDescriptor fd, String packageName) { 3641 dumpPackageStateStatic(fd, packageName); 3642 } 3643 3644 /** 3645 * @hide 3646 */ 3647 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3648 FileOutputStream fout = new FileOutputStream(fd); 3649 PrintWriter pw = new FastPrintWriter(fout); 3650 dumpService(pw, fd, "package", new String[] { packageName }); 3651 pw.println(); 3652 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3653 "-a", "package", packageName }); 3654 pw.println(); 3655 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3656 pw.println(); 3657 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3658 pw.println(); 3659 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3660 pw.println(); 3661 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3662 pw.flush(); 3663 } 3664 3665 /** 3666 * @hide 3667 */ 3668 public static boolean isSystemReady() { 3669 if (!sSystemReady) { 3670 if (ActivityThread.isSystem()) { 3671 sSystemReady = 3672 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3673 } else { 3674 // Since this is being called from outside system server, system should be 3675 // ready by now. 3676 sSystemReady = true; 3677 } 3678 } 3679 return sSystemReady; 3680 } 3681 3682 /** 3683 * @hide 3684 */ 3685 public static void broadcastStickyIntent(Intent intent, int userId) { 3686 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3687 } 3688 3689 /** 3690 * Convenience for sending a sticky broadcast. For internal use only. 3691 * 3692 * @hide 3693 */ 3694 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3695 try { 3696 getService().broadcastIntent( 3697 null, intent, null, null, Activity.RESULT_OK, null, null, 3698 null /*permission*/, appOp, null, false, true, userId); 3699 } catch (RemoteException ex) { 3700 } 3701 } 3702 3703 /** 3704 * @hide 3705 */ 3706 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3707 String tag) { 3708 try { 3709 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3710 sourceUid, sourcePkg, tag); 3711 } catch (RemoteException ex) { 3712 } 3713 } 3714 3715 /** 3716 * @hide 3717 */ 3718 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3719 try { 3720 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3721 } catch (RemoteException ex) { 3722 } 3723 } 3724 3725 /** 3726 * @hide 3727 */ 3728 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3729 try { 3730 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3731 } catch (RemoteException ex) { 3732 } 3733 } 3734 3735 /** 3736 * @hide 3737 */ 3738 public static IActivityManager getService() { 3739 return IActivityManagerSingleton.get(); 3740 } 3741 3742 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3743 new Singleton<IActivityManager>() { 3744 @Override 3745 protected IActivityManager create() { 3746 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3747 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3748 return am; 3749 } 3750 }; 3751 3752 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3753 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3754 IBinder service = ServiceManager.checkService(name); 3755 if (service == null) { 3756 pw.println(" (Service not found)"); 3757 return; 3758 } 3759 TransferPipe tp = null; 3760 try { 3761 pw.flush(); 3762 tp = new TransferPipe(); 3763 tp.setBufferPrefix(" "); 3764 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3765 tp.go(fd, 10000); 3766 } catch (Throwable e) { 3767 if (tp != null) { 3768 tp.kill(); 3769 } 3770 pw.println("Failure dumping service:"); 3771 e.printStackTrace(pw); 3772 } 3773 } 3774 3775 /** 3776 * Request that the system start watching for the calling process to exceed a pss 3777 * size as given here. Once called, the system will look for any occasions where it 3778 * sees the associated process with a larger pss size and, when this happens, automatically 3779 * pull a heap dump from it and allow the user to share the data. Note that this request 3780 * continues running even if the process is killed and restarted. To remove the watch, 3781 * use {@link #clearWatchHeapLimit()}. 3782 * 3783 * <p>This API only work if the calling process has been marked as 3784 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3785 * (userdebug or eng) build.</p> 3786 * 3787 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3788 * handle heap limit reports themselves.</p> 3789 * 3790 * @param pssSize The size in bytes to set the limit at. 3791 */ 3792 public void setWatchHeapLimit(long pssSize) { 3793 try { 3794 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3795 mContext.getPackageName()); 3796 } catch (RemoteException e) { 3797 throw e.rethrowFromSystemServer(); 3798 } 3799 } 3800 3801 /** 3802 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3803 * If your package has an activity handling this action, it will be launched with the 3804 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3805 * match the activty must support this action and a MIME type of "*/*". 3806 */ 3807 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3808 3809 /** 3810 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3811 */ 3812 public void clearWatchHeapLimit() { 3813 try { 3814 getService().setDumpHeapDebugLimit(null, 0, 0, null); 3815 } catch (RemoteException e) { 3816 throw e.rethrowFromSystemServer(); 3817 } 3818 } 3819 3820 /** 3821 * @hide 3822 */ 3823 public void startLockTaskMode(int taskId) { 3824 try { 3825 getService().startLockTaskModeById(taskId); 3826 } catch (RemoteException e) { 3827 throw e.rethrowFromSystemServer(); 3828 } 3829 } 3830 3831 /** 3832 * @hide 3833 */ 3834 public void stopLockTaskMode() { 3835 try { 3836 getService().stopLockTaskMode(); 3837 } catch (RemoteException e) { 3838 throw e.rethrowFromSystemServer(); 3839 } 3840 } 3841 3842 /** 3843 * Return whether currently in lock task mode. When in this mode 3844 * no new tasks can be created or switched to. 3845 * 3846 * @see Activity#startLockTask() 3847 * 3848 * @deprecated Use {@link #getLockTaskModeState} instead. 3849 */ 3850 @Deprecated 3851 public boolean isInLockTaskMode() { 3852 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3853 } 3854 3855 /** 3856 * Return the current state of task locking. The three possible outcomes 3857 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3858 * and {@link #LOCK_TASK_MODE_PINNED}. 3859 * 3860 * @see Activity#startLockTask() 3861 */ 3862 public int getLockTaskModeState() { 3863 try { 3864 return getService().getLockTaskModeState(); 3865 } catch (RemoteException e) { 3866 throw e.rethrowFromSystemServer(); 3867 } 3868 } 3869 3870 /** 3871 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 3872 * thread can be a VR thread in a process at a time, and that thread may be subject to 3873 * restrictions on the amount of time it can run. 3874 * 3875 * To reset the VR thread for an application, a tid of 0 can be passed. 3876 * 3877 * @see android.os.Process#myTid() 3878 * @param tid tid of the VR thread 3879 */ 3880 public static void setVrThread(int tid) { 3881 try { 3882 getService().setVrThread(tid); 3883 } catch (RemoteException e) { 3884 // pass 3885 } 3886 } 3887 3888 /** 3889 * The AppTask allows you to manage your own application's tasks. 3890 * See {@link android.app.ActivityManager#getAppTasks()} 3891 */ 3892 public static class AppTask { 3893 private IAppTask mAppTaskImpl; 3894 3895 /** @hide */ 3896 public AppTask(IAppTask task) { 3897 mAppTaskImpl = task; 3898 } 3899 3900 /** 3901 * Finishes all activities in this task and removes it from the recent tasks list. 3902 */ 3903 public void finishAndRemoveTask() { 3904 try { 3905 mAppTaskImpl.finishAndRemoveTask(); 3906 } catch (RemoteException e) { 3907 throw e.rethrowFromSystemServer(); 3908 } 3909 } 3910 3911 /** 3912 * Get the RecentTaskInfo associated with this task. 3913 * 3914 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3915 */ 3916 public RecentTaskInfo getTaskInfo() { 3917 try { 3918 return mAppTaskImpl.getTaskInfo(); 3919 } catch (RemoteException e) { 3920 throw e.rethrowFromSystemServer(); 3921 } 3922 } 3923 3924 /** 3925 * Bring this task to the foreground. If it contains activities, they will be 3926 * brought to the foreground with it and their instances re-created if needed. 3927 * If it doesn't contain activities, the root activity of the task will be 3928 * re-launched. 3929 */ 3930 public void moveToFront() { 3931 try { 3932 mAppTaskImpl.moveToFront(); 3933 } catch (RemoteException e) { 3934 throw e.rethrowFromSystemServer(); 3935 } 3936 } 3937 3938 /** 3939 * Start an activity in this task. Brings the task to the foreground. If this task 3940 * is not currently active (that is, its id < 0), then a new activity for the given 3941 * Intent will be launched as the root of the task and the task brought to the 3942 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3943 * an activity to launch in a new task, then a new activity for the given Intent will 3944 * be launched on top of the task and the task brought to the foreground. If this 3945 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3946 * or would otherwise be launched in to a new task, then the activity not launched but 3947 * this task be brought to the foreground and a new intent delivered to the top 3948 * activity if appropriate. 3949 * 3950 * <p>In other words, you generally want to use an Intent here that does not specify 3951 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3952 * and let the system do the right thing.</p> 3953 * 3954 * @param intent The Intent describing the new activity to be launched on the task. 3955 * @param options Optional launch options. 3956 * 3957 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3958 */ 3959 public void startActivity(Context context, Intent intent, Bundle options) { 3960 ActivityThread thread = ActivityThread.currentActivityThread(); 3961 thread.getInstrumentation().execStartActivityFromAppTask(context, 3962 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3963 } 3964 3965 /** 3966 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3967 * Intent of this AppTask. 3968 * 3969 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3970 * be set; otherwise, it will be cleared. 3971 */ 3972 public void setExcludeFromRecents(boolean exclude) { 3973 try { 3974 mAppTaskImpl.setExcludeFromRecents(exclude); 3975 } catch (RemoteException e) { 3976 throw e.rethrowFromSystemServer(); 3977 } 3978 } 3979 } 3980} 3981