ActivityManager.java revision fc46e9b643881b7b2ab76854f3a0ac077e9def8d
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.content.pm.ActivityInfo; 26import android.content.res.Configuration; 27import android.graphics.Canvas; 28import android.graphics.Matrix; 29import android.graphics.Point; 30import android.os.BatteryStats; 31import android.os.IBinder; 32import android.os.ParcelFileDescriptor; 33 34import com.android.internal.app.procstats.ProcessStats; 35import com.android.internal.os.RoSystemProperties; 36import com.android.internal.os.TransferPipe; 37import com.android.internal.util.FastPrintWriter; 38 39import android.content.ComponentName; 40import android.content.Context; 41import android.content.Intent; 42import android.content.UriPermission; 43import android.content.pm.ApplicationInfo; 44import android.content.pm.ConfigurationInfo; 45import android.content.pm.IPackageDataObserver; 46import android.content.pm.PackageManager; 47import android.content.pm.ParceledListSlice; 48import android.content.pm.UserInfo; 49import android.content.res.Resources; 50import android.graphics.Bitmap; 51import android.graphics.Color; 52import android.graphics.Rect; 53import android.os.Bundle; 54import android.os.Debug; 55import android.os.Handler; 56import android.os.Parcel; 57import android.os.Parcelable; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.ServiceManager; 61import android.os.SystemProperties; 62import android.os.UserHandle; 63import android.text.TextUtils; 64import android.util.DisplayMetrics; 65import android.util.Singleton; 66import android.util.Size; 67 68import org.xmlpull.v1.XmlSerializer; 69 70import java.io.FileDescriptor; 71import java.io.FileOutputStream; 72import java.io.IOException; 73import java.io.PrintWriter; 74import java.lang.annotation.Retention; 75import java.lang.annotation.RetentionPolicy; 76import java.util.ArrayList; 77import java.util.List; 78 79/** 80 * Interact with the overall activities running in the system. 81 */ 82public class ActivityManager { 83 private static String TAG = "ActivityManager"; 84 85 private static int gMaxRecentTasks = -1; 86 87 private final Context mContext; 88 private final Handler mHandler; 89 90 /** 91 * Defines acceptable types of bugreports. 92 * @hide 93 */ 94 @Retention(RetentionPolicy.SOURCE) 95 @IntDef({ 96 BUGREPORT_OPTION_FULL, 97 BUGREPORT_OPTION_INTERACTIVE, 98 BUGREPORT_OPTION_REMOTE, 99 BUGREPORT_OPTION_WEAR 100 }) 101 public @interface BugreportMode {} 102 /** 103 * Takes a bugreport without user interference (and hence causing less 104 * interference to the system), but includes all sections. 105 * @hide 106 */ 107 public static final int BUGREPORT_OPTION_FULL = 0; 108 /** 109 * Allows user to monitor progress and enter additional data; might not include all 110 * sections. 111 * @hide 112 */ 113 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 114 /** 115 * Takes a bugreport requested remotely by administrator of the Device Owner app, 116 * not the device's user. 117 * @hide 118 */ 119 public static final int BUGREPORT_OPTION_REMOTE = 2; 120 /** 121 * Takes a bugreport on a wearable device. 122 * @hide 123 */ 124 public static final int BUGREPORT_OPTION_WEAR = 3; 125 126 /** 127 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 128 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 129 * uninstalled in lieu of the declaring one. The package named here must be 130 * signed with the same certificate as the one declaring the {@code <meta-data>}. 131 */ 132 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 133 134 /** 135 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 136 * @hide 137 */ 138 public static final int START_VOICE_HIDDEN_SESSION = -10; 139 140 /** 141 * Result for IActivityManager.startVoiceActivity: active session does not match 142 * the requesting token. 143 * @hide 144 */ 145 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 146 147 /** 148 * Result for IActivityManager.startActivity: trying to start a background user 149 * activity that shouldn't be displayed for all users. 150 * @hide 151 */ 152 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 153 154 /** 155 * Result for IActivityManager.startActivity: trying to start an activity under voice 156 * control when that activity does not support the VOICE category. 157 * @hide 158 */ 159 public static final int START_NOT_VOICE_COMPATIBLE = -7; 160 161 /** 162 * Result for IActivityManager.startActivity: an error where the 163 * start had to be canceled. 164 * @hide 165 */ 166 public static final int START_CANCELED = -6; 167 168 /** 169 * Result for IActivityManager.startActivity: an error where the 170 * thing being started is not an activity. 171 * @hide 172 */ 173 public static final int START_NOT_ACTIVITY = -5; 174 175 /** 176 * Result for IActivityManager.startActivity: an error where the 177 * caller does not have permission to start the activity. 178 * @hide 179 */ 180 public static final int START_PERMISSION_DENIED = -4; 181 182 /** 183 * Result for IActivityManager.startActivity: an error where the 184 * caller has requested both to forward a result and to receive 185 * a result. 186 * @hide 187 */ 188 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 189 190 /** 191 * Result for IActivityManager.startActivity: an error where the 192 * requested class is not found. 193 * @hide 194 */ 195 public static final int START_CLASS_NOT_FOUND = -2; 196 197 /** 198 * Result for IActivityManager.startActivity: an error where the 199 * given Intent could not be resolved to an activity. 200 * @hide 201 */ 202 public static final int START_INTENT_NOT_RESOLVED = -1; 203 204 /** 205 * Result for IActivityManaqer.startActivity: the activity was started 206 * successfully as normal. 207 * @hide 208 */ 209 public static final int START_SUCCESS = 0; 210 211 /** 212 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 213 * be executed if it is the recipient, and that is indeed the case. 214 * @hide 215 */ 216 public static final int START_RETURN_INTENT_TO_CALLER = 1; 217 218 /** 219 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 220 * a task was simply brought to the foreground. 221 * @hide 222 */ 223 public static final int START_TASK_TO_FRONT = 2; 224 225 /** 226 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 227 * the given Intent was given to the existing top activity. 228 * @hide 229 */ 230 public static final int START_DELIVERED_TO_TOP = 3; 231 232 /** 233 * Result for IActivityManaqer.startActivity: request was canceled because 234 * app switches are temporarily canceled to ensure the user's last request 235 * (such as pressing home) is performed. 236 * @hide 237 */ 238 public static final int START_SWITCHES_CANCELED = 4; 239 240 /** 241 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 242 * while in Lock Task Mode. 243 * @hide 244 */ 245 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 246 247 /** 248 * Flag for IActivityManaqer.startActivity: do special start mode where 249 * a new activity is launched only if it is needed. 250 * @hide 251 */ 252 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 253 254 /** 255 * Flag for IActivityManaqer.startActivity: launch the app for 256 * debugging. 257 * @hide 258 */ 259 public static final int START_FLAG_DEBUG = 1<<1; 260 261 /** 262 * Flag for IActivityManaqer.startActivity: launch the app for 263 * allocation tracking. 264 * @hide 265 */ 266 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 267 268 /** 269 * Flag for IActivityManaqer.startActivity: launch the app with 270 * native debugging support. 271 * @hide 272 */ 273 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 274 275 /** 276 * Result for IActivityManaqer.broadcastIntent: success! 277 * @hide 278 */ 279 public static final int BROADCAST_SUCCESS = 0; 280 281 /** 282 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 283 * a sticky intent without appropriate permission. 284 * @hide 285 */ 286 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 287 288 /** 289 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 290 * to a stopped user. Fail. 291 * @hide 292 */ 293 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 294 295 /** 296 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 297 * for a sendBroadcast operation. 298 * @hide 299 */ 300 public static final int INTENT_SENDER_BROADCAST = 1; 301 302 /** 303 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 304 * for a startActivity operation. 305 * @hide 306 */ 307 public static final int INTENT_SENDER_ACTIVITY = 2; 308 309 /** 310 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 311 * for an activity result operation. 312 * @hide 313 */ 314 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 315 316 /** 317 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 318 * for a startService operation. 319 * @hide 320 */ 321 public static final int INTENT_SENDER_SERVICE = 4; 322 323 /** @hide User operation call: success! */ 324 public static final int USER_OP_SUCCESS = 0; 325 326 /** @hide User operation call: given user id is not known. */ 327 public static final int USER_OP_UNKNOWN_USER = -1; 328 329 /** @hide User operation call: given user id is the current user, can't be stopped. */ 330 public static final int USER_OP_IS_CURRENT = -2; 331 332 /** @hide User operation call: system user can't be stopped. */ 333 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 334 335 /** @hide User operation call: one of related users cannot be stopped. */ 336 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 337 338 /** @hide Process does not exist. */ 339 public static final int PROCESS_STATE_NONEXISTENT = -1; 340 341 /** @hide Process is a persistent system process. */ 342 public static final int PROCESS_STATE_PERSISTENT = 0; 343 344 /** @hide Process is a persistent system process and is doing UI. */ 345 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 346 347 /** @hide Process is hosting the current top activities. Note that this covers 348 * all activities that are visible to the user. */ 349 public static final int PROCESS_STATE_TOP = 2; 350 351 /** @hide Process is hosting a foreground service due to a system binding. */ 352 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 353 354 /** @hide Process is hosting a foreground service. */ 355 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 356 357 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 358 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 359 360 /** @hide Process is important to the user, and something they are aware of. */ 361 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 362 363 /** @hide Process is important to the user, but not something they are aware of. */ 364 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 365 366 /** @hide Process is in the background running a backup/restore operation. */ 367 public static final int PROCESS_STATE_BACKUP = 8; 368 369 /** @hide Process is in the background, but it can't restore its state so we want 370 * to try to avoid killing it. */ 371 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 372 373 /** @hide Process is in the background running a service. Unlike oom_adj, this level 374 * is used for both the normal running in background state and the executing 375 * operations state. */ 376 public static final int PROCESS_STATE_SERVICE = 10; 377 378 /** @hide Process is in the background running a receiver. Note that from the 379 * perspective of oom_adj receivers run at a higher foreground level, but for our 380 * prioritization here that is not necessary and putting them below services means 381 * many fewer changes in some process states as they receive broadcasts. */ 382 public static final int PROCESS_STATE_RECEIVER = 11; 383 384 /** @hide Process is in the background but hosts the home activity. */ 385 public static final int PROCESS_STATE_HOME = 12; 386 387 /** @hide Process is in the background but hosts the last shown activity. */ 388 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 389 390 /** @hide Process is being cached for later use and contains activities. */ 391 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 392 393 /** @hide Process is being cached for later use and is a client of another cached 394 * process that contains activities. */ 395 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 396 397 /** @hide Process is being cached for later use and is empty. */ 398 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 399 400 /** @hide The lowest process state number */ 401 public static final int MIN_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 402 403 /** @hide The highest process state number */ 404 public static final int MAX_PROCESS_STATE = PROCESS_STATE_CACHED_EMPTY; 405 406 /** @hide Should this process state be considered a background state? */ 407 public static final boolean isProcStateBackground(int procState) { 408 return procState >= PROCESS_STATE_BACKUP; 409 } 410 411 /** @hide requestType for assist context: only basic information. */ 412 public static final int ASSIST_CONTEXT_BASIC = 0; 413 414 /** @hide requestType for assist context: generate full AssistStructure. */ 415 public static final int ASSIST_CONTEXT_FULL = 1; 416 417 /** @hide Flag for registerUidObserver: report changes in process state. */ 418 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 419 420 /** @hide Flag for registerUidObserver: report uid gone. */ 421 public static final int UID_OBSERVER_GONE = 1<<1; 422 423 /** @hide Flag for registerUidObserver: report uid has become idle. */ 424 public static final int UID_OBSERVER_IDLE = 1<<2; 425 426 /** @hide Flag for registerUidObserver: report uid has become active. */ 427 public static final int UID_OBSERVER_ACTIVE = 1<<3; 428 429 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 430 public static final int APP_START_MODE_NORMAL = 0; 431 432 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 433 public static final int APP_START_MODE_DELAYED = 1; 434 435 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 436 * launches. */ 437 public static final int APP_START_MODE_DISABLED = 2; 438 439 /** 440 * Lock task mode is not active. 441 */ 442 public static final int LOCK_TASK_MODE_NONE = 0; 443 444 /** 445 * Full lock task mode is active. 446 */ 447 public static final int LOCK_TASK_MODE_LOCKED = 1; 448 449 /** 450 * App pinning mode is active. 451 */ 452 public static final int LOCK_TASK_MODE_PINNED = 2; 453 454 Point mAppTaskThumbnailSize; 455 456 /*package*/ ActivityManager(Context context, Handler handler) { 457 mContext = context; 458 mHandler = handler; 459 } 460 461 /** 462 * Screen compatibility mode: the application most always run in 463 * compatibility mode. 464 * @hide 465 */ 466 public static final int COMPAT_MODE_ALWAYS = -1; 467 468 /** 469 * Screen compatibility mode: the application can never run in 470 * compatibility mode. 471 * @hide 472 */ 473 public static final int COMPAT_MODE_NEVER = -2; 474 475 /** 476 * Screen compatibility mode: unknown. 477 * @hide 478 */ 479 public static final int COMPAT_MODE_UNKNOWN = -3; 480 481 /** 482 * Screen compatibility mode: the application currently has compatibility 483 * mode disabled. 484 * @hide 485 */ 486 public static final int COMPAT_MODE_DISABLED = 0; 487 488 /** 489 * Screen compatibility mode: the application currently has compatibility 490 * mode enabled. 491 * @hide 492 */ 493 public static final int COMPAT_MODE_ENABLED = 1; 494 495 /** 496 * Screen compatibility mode: request to toggle the application's 497 * compatibility mode. 498 * @hide 499 */ 500 public static final int COMPAT_MODE_TOGGLE = 2; 501 502 /** @hide */ 503 public static class StackId { 504 /** Invalid stack ID. */ 505 public static final int INVALID_STACK_ID = -1; 506 507 /** First static stack ID. */ 508 public static final int FIRST_STATIC_STACK_ID = 0; 509 510 /** Home activity stack ID. */ 511 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 512 513 /** ID of stack where fullscreen activities are normally launched into. */ 514 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 515 516 /** ID of stack where freeform/resized activities are normally launched into. */ 517 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 518 519 /** ID of stack that occupies a dedicated region of the screen. */ 520 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 521 522 /** ID of stack that always on top (always visible) when it exist. */ 523 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 524 525 /** Last static stack stack ID. */ 526 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 527 528 /** Start of ID range used by stacks that are created dynamically. */ 529 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 530 531 public static boolean isStaticStack(int stackId) { 532 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 533 } 534 535 /** 536 * Returns true if the activities contained in the input stack display a shadow around 537 * their border. 538 */ 539 public static boolean hasWindowShadow(int stackId) { 540 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 541 } 542 543 /** 544 * Returns true if the activities contained in the input stack display a decor view. 545 */ 546 public static boolean hasWindowDecor(int stackId) { 547 return stackId == FREEFORM_WORKSPACE_STACK_ID; 548 } 549 550 /** 551 * Returns true if the tasks contained in the stack can be resized independently of the 552 * stack. 553 */ 554 public static boolean isTaskResizeAllowed(int stackId) { 555 return stackId == FREEFORM_WORKSPACE_STACK_ID; 556 } 557 558 /** Returns true if the task bounds should persist across power cycles. */ 559 public static boolean persistTaskBounds(int stackId) { 560 return stackId == FREEFORM_WORKSPACE_STACK_ID; 561 } 562 563 /** 564 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 565 */ 566 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 567 return stackId == PINNED_STACK_ID; 568 } 569 570 /** 571 * Returns true if we try to maintain focus in the current stack when the top activity 572 * finishes. 573 */ 574 public static boolean keepFocusInStackIfPossible(int stackId) { 575 return stackId == FREEFORM_WORKSPACE_STACK_ID 576 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 577 } 578 579 /** 580 * Returns true if Stack size is affected by the docked stack changing size. 581 */ 582 public static boolean isResizeableByDockedStack(int stackId) { 583 return isStaticStack(stackId) && 584 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 585 } 586 587 /** 588 * Returns true if the size of tasks in the input stack are affected by the docked stack 589 * changing size. 590 */ 591 public static boolean isTaskResizeableByDockedStack(int stackId) { 592 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 593 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 594 } 595 596 /** 597 * Returns true if the windows of tasks being moved to the target stack from the source 598 * stack should be replaced, meaning that window manager will keep the old window around 599 * until the new is ready. 600 */ 601 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 602 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 603 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 604 } 605 606 /** 607 * Return whether a stackId is a stack containing floating windows. Floating windows 608 * are laid out differently as they are allowed to extend past the display bounds 609 * without overscan insets. 610 */ 611 public static boolean tasksAreFloating(int stackId) { 612 return stackId == FREEFORM_WORKSPACE_STACK_ID 613 || stackId == PINNED_STACK_ID; 614 } 615 616 /** 617 * Returns true if animation specs should be constructed for app transition that moves 618 * the task to the specified stack. 619 */ 620 public static boolean useAnimationSpecForAppTransition(int stackId) { 621 622 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 623 // reboots. 624 return stackId == FREEFORM_WORKSPACE_STACK_ID 625 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 626 || stackId == INVALID_STACK_ID; 627 } 628 629 /** Returns true if the windows in the stack can receive input keys. */ 630 public static boolean canReceiveKeys(int stackId) { 631 return stackId != PINNED_STACK_ID; 632 } 633 634 /** 635 * Returns true if the stack can be visible above lockscreen. 636 */ 637 public static boolean isAllowedOverLockscreen(int stackId) { 638 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 639 } 640 641 public static boolean isAlwaysOnTop(int stackId) { 642 return stackId == PINNED_STACK_ID; 643 } 644 645 /** 646 * Returns true if the top task in the task is allowed to return home when finished and 647 * there are other tasks in the stack. 648 */ 649 public static boolean allowTopTaskToReturnHome(int stackId) { 650 return stackId != PINNED_STACK_ID; 651 } 652 653 /** 654 * Returns true if the stack should be resized to match the bounds specified by 655 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 656 */ 657 public static boolean resizeStackWithLaunchBounds(int stackId) { 658 return stackId == PINNED_STACK_ID; 659 } 660 661 /** 662 * Returns true if any visible windows belonging to apps in this stack should be kept on 663 * screen when the app is killed due to something like the low memory killer. 664 */ 665 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 666 return stackId != PINNED_STACK_ID; 667 } 668 669 /** 670 * Returns true if the backdrop on the client side should match the frame of the window. 671 * Returns false, if the backdrop should be fullscreen. 672 */ 673 public static boolean useWindowFrameForBackdrop(int stackId) { 674 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 675 } 676 677 /** 678 * Returns true if a window from the specified stack with {@param stackId} are normally 679 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 680 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 681 * etc. 682 */ 683 public static boolean normallyFullscreenWindows(int stackId) { 684 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 685 && stackId != DOCKED_STACK_ID; 686 } 687 688 /** 689 * Returns true if the input stack id should only be present on a device that supports 690 * multi-window mode. 691 * @see android.app.ActivityManager#supportsMultiWindow 692 */ 693 public static boolean isMultiWindowStack(int stackId) { 694 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 695 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 696 } 697 698 /** 699 * Returns true if activities contained in this stack can request visible behind by 700 * calling {@link Activity#requestVisibleBehind}. 701 */ 702 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 703 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 704 } 705 706 /** 707 * Returns true if this stack may be scaled without resizing, 708 * and windows within may need to be configured as such. 709 */ 710 public static boolean windowsAreScaleable(int stackId) { 711 return stackId == PINNED_STACK_ID; 712 } 713 714 /** 715 * Returns true if windows in this stack should be given move animations 716 * by default. 717 */ 718 public static boolean hasMovementAnimations(int stackId) { 719 return stackId != PINNED_STACK_ID; 720 } 721 722 /** Returns true if the input stack and its content can affect the device orientation. */ 723 public static boolean canSpecifyOrientation(int stackId) { 724 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 725 } 726 } 727 728 /** 729 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 730 * specifies the position of the created docked stack at the top half of the screen if 731 * in portrait mode or at the left half of the screen if in landscape mode. 732 * @hide 733 */ 734 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 735 736 /** 737 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 738 * specifies the position of the created docked stack at the bottom half of the screen if 739 * in portrait mode or at the right half of the screen if in landscape mode. 740 * @hide 741 */ 742 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 743 744 /** 745 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 746 * that the resize doesn't need to preserve the window, and can be skipped if bounds 747 * is unchanged. This mode is used by window manager in most cases. 748 * @hide 749 */ 750 public static final int RESIZE_MODE_SYSTEM = 0; 751 752 /** 753 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 754 * that the resize should preserve the window if possible. 755 * @hide 756 */ 757 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 758 759 /** 760 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 761 * that the resize should be performed even if the bounds appears unchanged. 762 * @hide 763 */ 764 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 765 766 /** 767 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 768 * manager during a screen rotation. 769 * @hide 770 */ 771 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 772 773 /** 774 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 775 * resize is due to a drag action. 776 * @hide 777 */ 778 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 779 780 /** 781 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 782 * that the resize should preserve the window if possible, and should not be skipped 783 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 784 * is ending. 785 * @hide 786 */ 787 public static final int RESIZE_MODE_USER_FORCED = 788 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 789 790 /** @hide */ 791 public int getFrontActivityScreenCompatMode() { 792 try { 793 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 794 } catch (RemoteException e) { 795 throw e.rethrowFromSystemServer(); 796 } 797 } 798 799 /** @hide */ 800 public void setFrontActivityScreenCompatMode(int mode) { 801 try { 802 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 803 } catch (RemoteException e) { 804 throw e.rethrowFromSystemServer(); 805 } 806 } 807 808 /** @hide */ 809 public int getPackageScreenCompatMode(String packageName) { 810 try { 811 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 812 } catch (RemoteException e) { 813 throw e.rethrowFromSystemServer(); 814 } 815 } 816 817 /** @hide */ 818 public void setPackageScreenCompatMode(String packageName, int mode) { 819 try { 820 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 821 } catch (RemoteException e) { 822 throw e.rethrowFromSystemServer(); 823 } 824 } 825 826 /** @hide */ 827 public boolean getPackageAskScreenCompat(String packageName) { 828 try { 829 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 830 } catch (RemoteException e) { 831 throw e.rethrowFromSystemServer(); 832 } 833 } 834 835 /** @hide */ 836 public void setPackageAskScreenCompat(String packageName, boolean ask) { 837 try { 838 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 839 } catch (RemoteException e) { 840 throw e.rethrowFromSystemServer(); 841 } 842 } 843 844 /** 845 * Return the approximate per-application memory class of the current 846 * device. This gives you an idea of how hard a memory limit you should 847 * impose on your application to let the overall system work best. The 848 * returned value is in megabytes; the baseline Android memory class is 849 * 16 (which happens to be the Java heap limit of those devices); some 850 * device with more memory may return 24 or even higher numbers. 851 */ 852 public int getMemoryClass() { 853 return staticGetMemoryClass(); 854 } 855 856 /** @hide */ 857 static public int staticGetMemoryClass() { 858 // Really brain dead right now -- just take this from the configured 859 // vm heap size, and assume it is in megabytes and thus ends with "m". 860 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 861 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 862 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 863 } 864 return staticGetLargeMemoryClass(); 865 } 866 867 /** 868 * Return the approximate per-application memory class of the current 869 * device when an application is running with a large heap. This is the 870 * space available for memory-intensive applications; most applications 871 * should not need this amount of memory, and should instead stay with the 872 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 873 * This may be the same size as {@link #getMemoryClass()} on memory 874 * constrained devices, or it may be significantly larger on devices with 875 * a large amount of available RAM. 876 * 877 * <p>The is the size of the application's Dalvik heap if it has 878 * specified <code>android:largeHeap="true"</code> in its manifest. 879 */ 880 public int getLargeMemoryClass() { 881 return staticGetLargeMemoryClass(); 882 } 883 884 /** @hide */ 885 static public int staticGetLargeMemoryClass() { 886 // Really brain dead right now -- just take this from the configured 887 // vm heap size, and assume it is in megabytes and thus ends with "m". 888 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 889 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 890 } 891 892 /** 893 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 894 * is ultimately up to the device configuration, but currently it generally means 895 * something in the class of a 512MB device with about a 800x480 or less screen. 896 * This is mostly intended to be used by apps to determine whether they should turn 897 * off certain features that require more RAM. 898 */ 899 public boolean isLowRamDevice() { 900 return isLowRamDeviceStatic(); 901 } 902 903 /** @hide */ 904 public static boolean isLowRamDeviceStatic() { 905 return RoSystemProperties.CONFIG_LOW_RAM; 906 } 907 908 /** 909 * Used by persistent processes to determine if they are running on a 910 * higher-end device so should be okay using hardware drawing acceleration 911 * (which tends to consume a lot more RAM). 912 * @hide 913 */ 914 static public boolean isHighEndGfx() { 915 return !isLowRamDeviceStatic() && 916 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 917 } 918 919 /** 920 * Return the maximum number of recents entries that we will maintain and show. 921 * @hide 922 */ 923 static public int getMaxRecentTasksStatic() { 924 if (gMaxRecentTasks < 0) { 925 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 926 } 927 return gMaxRecentTasks; 928 } 929 930 /** 931 * Return the default limit on the number of recents that an app can make. 932 * @hide 933 */ 934 static public int getDefaultAppRecentsLimitStatic() { 935 return getMaxRecentTasksStatic() / 6; 936 } 937 938 /** 939 * Return the maximum limit on the number of recents that an app can make. 940 * @hide 941 */ 942 static public int getMaxAppRecentsLimitStatic() { 943 return getMaxRecentTasksStatic() / 2; 944 } 945 946 /** 947 * Returns true if the system supports at least one form of multi-window. 948 * E.g. freeform, split-screen, picture-in-picture. 949 * @hide 950 */ 951 static public boolean supportsMultiWindow() { 952 return !isLowRamDeviceStatic() 953 && Resources.getSystem().getBoolean( 954 com.android.internal.R.bool.config_supportsMultiWindow); 955 } 956 957 /** 958 * Information you can set and retrieve about the current activity within the recent task list. 959 */ 960 public static class TaskDescription implements Parcelable { 961 /** @hide */ 962 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 963 private static final String ATTR_TASKDESCRIPTIONLABEL = 964 ATTR_TASKDESCRIPTION_PREFIX + "label"; 965 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 966 ATTR_TASKDESCRIPTION_PREFIX + "color"; 967 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 968 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 969 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 970 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 971 972 private String mLabel; 973 private Bitmap mIcon; 974 private String mIconFilename; 975 private int mColorPrimary; 976 private int mColorBackground; 977 978 /** 979 * Creates the TaskDescription to the specified values. 980 * 981 * @param label A label and description of the current state of this task. 982 * @param icon An icon that represents the current state of this task. 983 * @param colorPrimary A color to override the theme's primary color. This color must be 984 * opaque. 985 */ 986 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 987 this(label, icon, null, colorPrimary, 0); 988 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 989 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 990 } 991 } 992 993 /** 994 * Creates the TaskDescription to the specified values. 995 * 996 * @param label A label and description of the current state of this activity. 997 * @param icon An icon that represents the current state of this activity. 998 */ 999 public TaskDescription(String label, Bitmap icon) { 1000 this(label, icon, null, 0, 0); 1001 } 1002 1003 /** 1004 * Creates the TaskDescription to the specified values. 1005 * 1006 * @param label A label and description of the current state of this activity. 1007 */ 1008 public TaskDescription(String label) { 1009 this(label, null, null, 0, 0); 1010 } 1011 1012 /** 1013 * Creates an empty TaskDescription. 1014 */ 1015 public TaskDescription() { 1016 this(null, null, null, 0, 0); 1017 } 1018 1019 /** @hide */ 1020 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1021 int colorBackground) { 1022 mLabel = label; 1023 mIcon = icon; 1024 mIconFilename = iconFilename; 1025 mColorPrimary = colorPrimary; 1026 mColorBackground = colorBackground; 1027 } 1028 1029 /** 1030 * Creates a copy of another TaskDescription. 1031 */ 1032 public TaskDescription(TaskDescription td) { 1033 copyFrom(td); 1034 } 1035 1036 /** 1037 * Copies this the values from another TaskDescription. 1038 * @hide 1039 */ 1040 public void copyFrom(TaskDescription other) { 1041 mLabel = other.mLabel; 1042 mIcon = other.mIcon; 1043 mIconFilename = other.mIconFilename; 1044 mColorPrimary = other.mColorPrimary; 1045 mColorBackground = other.mColorBackground; 1046 } 1047 1048 private TaskDescription(Parcel source) { 1049 readFromParcel(source); 1050 } 1051 1052 /** 1053 * Sets the label for this task description. 1054 * @hide 1055 */ 1056 public void setLabel(String label) { 1057 mLabel = label; 1058 } 1059 1060 /** 1061 * Sets the primary color for this task description. 1062 * @hide 1063 */ 1064 public void setPrimaryColor(int primaryColor) { 1065 // Ensure that the given color is valid 1066 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1067 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1068 } 1069 mColorPrimary = primaryColor; 1070 } 1071 1072 /** 1073 * Sets the background color for this task description. 1074 * @hide 1075 */ 1076 public void setBackgroundColor(int backgroundColor) { 1077 // Ensure that the given color is valid 1078 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1079 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1080 } 1081 mColorBackground = backgroundColor; 1082 } 1083 1084 /** 1085 * Sets the icon for this task description. 1086 * @hide 1087 */ 1088 public void setIcon(Bitmap icon) { 1089 mIcon = icon; 1090 } 1091 1092 /** 1093 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1094 * bitmap. 1095 * @hide 1096 */ 1097 public void setIconFilename(String iconFilename) { 1098 mIconFilename = iconFilename; 1099 mIcon = null; 1100 } 1101 1102 /** 1103 * @return The label and description of the current state of this task. 1104 */ 1105 public String getLabel() { 1106 return mLabel; 1107 } 1108 1109 /** 1110 * @return The icon that represents the current state of this task. 1111 */ 1112 public Bitmap getIcon() { 1113 if (mIcon != null) { 1114 return mIcon; 1115 } 1116 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1117 } 1118 1119 /** @hide */ 1120 public String getIconFilename() { 1121 return mIconFilename; 1122 } 1123 1124 /** @hide */ 1125 public Bitmap getInMemoryIcon() { 1126 return mIcon; 1127 } 1128 1129 /** @hide */ 1130 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1131 if (iconFilename != null) { 1132 try { 1133 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1134 userId); 1135 } catch (RemoteException e) { 1136 throw e.rethrowFromSystemServer(); 1137 } 1138 } 1139 return null; 1140 } 1141 1142 /** 1143 * @return The color override on the theme's primary color. 1144 */ 1145 public int getPrimaryColor() { 1146 return mColorPrimary; 1147 } 1148 1149 /** 1150 * @return The background color. 1151 * @hide 1152 */ 1153 public int getBackgroundColor() { 1154 return mColorBackground; 1155 } 1156 1157 /** @hide */ 1158 public void saveToXml(XmlSerializer out) throws IOException { 1159 if (mLabel != null) { 1160 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1161 } 1162 if (mColorPrimary != 0) { 1163 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1164 Integer.toHexString(mColorPrimary)); 1165 } 1166 if (mColorBackground != 0) { 1167 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1168 Integer.toHexString(mColorBackground)); 1169 } 1170 if (mIconFilename != null) { 1171 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1172 } 1173 } 1174 1175 /** @hide */ 1176 public void restoreFromXml(String attrName, String attrValue) { 1177 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1178 setLabel(attrValue); 1179 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1180 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1181 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1182 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1183 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1184 setIconFilename(attrValue); 1185 } 1186 } 1187 1188 @Override 1189 public int describeContents() { 1190 return 0; 1191 } 1192 1193 @Override 1194 public void writeToParcel(Parcel dest, int flags) { 1195 if (mLabel == null) { 1196 dest.writeInt(0); 1197 } else { 1198 dest.writeInt(1); 1199 dest.writeString(mLabel); 1200 } 1201 if (mIcon == null) { 1202 dest.writeInt(0); 1203 } else { 1204 dest.writeInt(1); 1205 mIcon.writeToParcel(dest, 0); 1206 } 1207 dest.writeInt(mColorPrimary); 1208 dest.writeInt(mColorBackground); 1209 if (mIconFilename == null) { 1210 dest.writeInt(0); 1211 } else { 1212 dest.writeInt(1); 1213 dest.writeString(mIconFilename); 1214 } 1215 } 1216 1217 public void readFromParcel(Parcel source) { 1218 mLabel = source.readInt() > 0 ? source.readString() : null; 1219 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1220 mColorPrimary = source.readInt(); 1221 mColorBackground = source.readInt(); 1222 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1223 } 1224 1225 public static final Creator<TaskDescription> CREATOR 1226 = new Creator<TaskDescription>() { 1227 public TaskDescription createFromParcel(Parcel source) { 1228 return new TaskDescription(source); 1229 } 1230 public TaskDescription[] newArray(int size) { 1231 return new TaskDescription[size]; 1232 } 1233 }; 1234 1235 @Override 1236 public String toString() { 1237 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1238 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1239 " colorBackground: " + mColorBackground; 1240 } 1241 } 1242 1243 /** 1244 * Information you can retrieve about tasks that the user has most recently 1245 * started or visited. 1246 */ 1247 public static class RecentTaskInfo implements Parcelable { 1248 /** 1249 * If this task is currently running, this is the identifier for it. 1250 * If it is not running, this will be -1. 1251 */ 1252 public int id; 1253 1254 /** 1255 * The true identifier of this task, valid even if it is not running. 1256 */ 1257 public int persistentId; 1258 1259 /** 1260 * The original Intent used to launch the task. You can use this 1261 * Intent to re-launch the task (if it is no longer running) or bring 1262 * the current task to the front. 1263 */ 1264 public Intent baseIntent; 1265 1266 /** 1267 * If this task was started from an alias, this is the actual 1268 * activity component that was initially started; the component of 1269 * the baseIntent in this case is the name of the actual activity 1270 * implementation that the alias referred to. Otherwise, this is null. 1271 */ 1272 public ComponentName origActivity; 1273 1274 /** 1275 * The actual activity component that started the task. 1276 * @hide 1277 */ 1278 @Nullable 1279 public ComponentName realActivity; 1280 1281 /** 1282 * Description of the task's last state. 1283 */ 1284 public CharSequence description; 1285 1286 /** 1287 * The id of the ActivityStack this Task was on most recently. 1288 * @hide 1289 */ 1290 public int stackId; 1291 1292 /** 1293 * The id of the user the task was running as. 1294 * @hide 1295 */ 1296 public int userId; 1297 1298 /** 1299 * The first time this task was active. 1300 * @hide 1301 */ 1302 public long firstActiveTime; 1303 1304 /** 1305 * The last time this task was active. 1306 * @hide 1307 */ 1308 public long lastActiveTime; 1309 1310 /** 1311 * The recent activity values for the highest activity in the stack to have set the values. 1312 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1313 */ 1314 public TaskDescription taskDescription; 1315 1316 /** 1317 * Task affiliation for grouping with other tasks. 1318 */ 1319 public int affiliatedTaskId; 1320 1321 /** 1322 * Task affiliation color of the source task with the affiliated task id. 1323 * 1324 * @hide 1325 */ 1326 public int affiliatedTaskColor; 1327 1328 /** 1329 * The component launched as the first activity in the task. 1330 * This can be considered the "application" of this task. 1331 */ 1332 public ComponentName baseActivity; 1333 1334 /** 1335 * The activity component at the top of the history stack of the task. 1336 * This is what the user is currently doing. 1337 */ 1338 public ComponentName topActivity; 1339 1340 /** 1341 * Number of activities in this task. 1342 */ 1343 public int numActivities; 1344 1345 /** 1346 * The bounds of the task. 1347 * @hide 1348 */ 1349 public Rect bounds; 1350 1351 /** 1352 * True if the task can go in the docked stack. 1353 * @hide 1354 */ 1355 public boolean isDockable; 1356 1357 /** 1358 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1359 * @hide 1360 */ 1361 public int resizeMode; 1362 1363 public RecentTaskInfo() { 1364 } 1365 1366 @Override 1367 public int describeContents() { 1368 return 0; 1369 } 1370 1371 @Override 1372 public void writeToParcel(Parcel dest, int flags) { 1373 dest.writeInt(id); 1374 dest.writeInt(persistentId); 1375 if (baseIntent != null) { 1376 dest.writeInt(1); 1377 baseIntent.writeToParcel(dest, 0); 1378 } else { 1379 dest.writeInt(0); 1380 } 1381 ComponentName.writeToParcel(origActivity, dest); 1382 ComponentName.writeToParcel(realActivity, dest); 1383 TextUtils.writeToParcel(description, dest, 1384 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1385 if (taskDescription != null) { 1386 dest.writeInt(1); 1387 taskDescription.writeToParcel(dest, 0); 1388 } else { 1389 dest.writeInt(0); 1390 } 1391 dest.writeInt(stackId); 1392 dest.writeInt(userId); 1393 dest.writeLong(firstActiveTime); 1394 dest.writeLong(lastActiveTime); 1395 dest.writeInt(affiliatedTaskId); 1396 dest.writeInt(affiliatedTaskColor); 1397 ComponentName.writeToParcel(baseActivity, dest); 1398 ComponentName.writeToParcel(topActivity, dest); 1399 dest.writeInt(numActivities); 1400 if (bounds != null) { 1401 dest.writeInt(1); 1402 bounds.writeToParcel(dest, 0); 1403 } else { 1404 dest.writeInt(0); 1405 } 1406 dest.writeInt(isDockable ? 1 : 0); 1407 dest.writeInt(resizeMode); 1408 } 1409 1410 public void readFromParcel(Parcel source) { 1411 id = source.readInt(); 1412 persistentId = source.readInt(); 1413 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1414 origActivity = ComponentName.readFromParcel(source); 1415 realActivity = ComponentName.readFromParcel(source); 1416 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1417 taskDescription = source.readInt() > 0 ? 1418 TaskDescription.CREATOR.createFromParcel(source) : null; 1419 stackId = source.readInt(); 1420 userId = source.readInt(); 1421 firstActiveTime = source.readLong(); 1422 lastActiveTime = source.readLong(); 1423 affiliatedTaskId = source.readInt(); 1424 affiliatedTaskColor = source.readInt(); 1425 baseActivity = ComponentName.readFromParcel(source); 1426 topActivity = ComponentName.readFromParcel(source); 1427 numActivities = source.readInt(); 1428 bounds = source.readInt() > 0 ? 1429 Rect.CREATOR.createFromParcel(source) : null; 1430 isDockable = source.readInt() == 1; 1431 resizeMode = source.readInt(); 1432 } 1433 1434 public static final Creator<RecentTaskInfo> CREATOR 1435 = new Creator<RecentTaskInfo>() { 1436 public RecentTaskInfo createFromParcel(Parcel source) { 1437 return new RecentTaskInfo(source); 1438 } 1439 public RecentTaskInfo[] newArray(int size) { 1440 return new RecentTaskInfo[size]; 1441 } 1442 }; 1443 1444 private RecentTaskInfo(Parcel source) { 1445 readFromParcel(source); 1446 } 1447 } 1448 1449 /** 1450 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1451 * that have set their 1452 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1453 */ 1454 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1455 1456 /** 1457 * Provides a list that does not contain any 1458 * recent tasks that currently are not available to the user. 1459 */ 1460 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1461 1462 /** 1463 * Provides a list that contains recent tasks for all 1464 * profiles of a user. 1465 * @hide 1466 */ 1467 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1468 1469 /** 1470 * Ignores all tasks that are on the home stack. 1471 * @hide 1472 */ 1473 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1474 1475 /** 1476 * Ignores the top task in the docked stack. 1477 * @hide 1478 */ 1479 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1480 1481 /** 1482 * Ignores all tasks that are on the pinned stack. 1483 * @hide 1484 */ 1485 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1486 1487 /** 1488 * <p></p>Return a list of the tasks that the user has recently launched, with 1489 * the most recent being first and older ones after in order. 1490 * 1491 * <p><b>Note: this method is only intended for debugging and presenting 1492 * task management user interfaces</b>. This should never be used for 1493 * core logic in an application, such as deciding between different 1494 * behaviors based on the information found here. Such uses are 1495 * <em>not</em> supported, and will likely break in the future. For 1496 * example, if multiple applications can be actively running at the 1497 * same time, assumptions made about the meaning of the data here for 1498 * purposes of control flow will be incorrect.</p> 1499 * 1500 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1501 * no longer available to third party applications: the introduction of 1502 * document-centric recents means 1503 * it can leak personal information to the caller. For backwards compatibility, 1504 * it will still return a small subset of its data: at least the caller's 1505 * own tasks (though see {@link #getAppTasks()} for the correct supported 1506 * way to retrieve that information), and possibly some other tasks 1507 * such as home that are known to not be sensitive. 1508 * 1509 * @param maxNum The maximum number of entries to return in the list. The 1510 * actual number returned may be smaller, depending on how many tasks the 1511 * user has started and the maximum number the system can remember. 1512 * @param flags Information about what to return. May be any combination 1513 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1514 * 1515 * @return Returns a list of RecentTaskInfo records describing each of 1516 * the recent tasks. 1517 */ 1518 @Deprecated 1519 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1520 throws SecurityException { 1521 try { 1522 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1523 flags, UserHandle.myUserId()).getList(); 1524 } catch (RemoteException e) { 1525 throw e.rethrowFromSystemServer(); 1526 } 1527 } 1528 1529 /** 1530 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1531 * specific user. It requires holding 1532 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1533 * @param maxNum The maximum number of entries to return in the list. The 1534 * actual number returned may be smaller, depending on how many tasks the 1535 * user has started and the maximum number the system can remember. 1536 * @param flags Information about what to return. May be any combination 1537 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1538 * 1539 * @return Returns a list of RecentTaskInfo records describing each of 1540 * the recent tasks. Most recently activated tasks go first. 1541 * 1542 * @hide 1543 */ 1544 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1545 throws SecurityException { 1546 try { 1547 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1548 flags, userId).getList(); 1549 } catch (RemoteException e) { 1550 throw e.rethrowFromSystemServer(); 1551 } 1552 } 1553 1554 /** 1555 * Information you can retrieve about a particular task that is currently 1556 * "running" in the system. Note that a running task does not mean the 1557 * given task actually has a process it is actively running in; it simply 1558 * means that the user has gone to it and never closed it, but currently 1559 * the system may have killed its process and is only holding on to its 1560 * last state in order to restart it when the user returns. 1561 */ 1562 public static class RunningTaskInfo implements Parcelable { 1563 /** 1564 * A unique identifier for this task. 1565 */ 1566 public int id; 1567 1568 /** 1569 * The stack that currently contains this task. 1570 * @hide 1571 */ 1572 public int stackId; 1573 1574 /** 1575 * The component launched as the first activity in the task. This can 1576 * be considered the "application" of this task. 1577 */ 1578 public ComponentName baseActivity; 1579 1580 /** 1581 * The activity component at the top of the history stack of the task. 1582 * This is what the user is currently doing. 1583 */ 1584 public ComponentName topActivity; 1585 1586 /** 1587 * Thumbnail representation of the task's current state. Currently 1588 * always null. 1589 */ 1590 public Bitmap thumbnail; 1591 1592 /** 1593 * Description of the task's current state. 1594 */ 1595 public CharSequence description; 1596 1597 /** 1598 * Number of activities in this task. 1599 */ 1600 public int numActivities; 1601 1602 /** 1603 * Number of activities that are currently running (not stopped 1604 * and persisted) in this task. 1605 */ 1606 public int numRunning; 1607 1608 /** 1609 * Last time task was run. For sorting. 1610 * @hide 1611 */ 1612 public long lastActiveTime; 1613 1614 /** 1615 * True if the task can go in the docked stack. 1616 * @hide 1617 */ 1618 public boolean isDockable; 1619 1620 /** 1621 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1622 * @hide 1623 */ 1624 public int resizeMode; 1625 1626 public RunningTaskInfo() { 1627 } 1628 1629 public int describeContents() { 1630 return 0; 1631 } 1632 1633 public void writeToParcel(Parcel dest, int flags) { 1634 dest.writeInt(id); 1635 dest.writeInt(stackId); 1636 ComponentName.writeToParcel(baseActivity, dest); 1637 ComponentName.writeToParcel(topActivity, dest); 1638 if (thumbnail != null) { 1639 dest.writeInt(1); 1640 thumbnail.writeToParcel(dest, 0); 1641 } else { 1642 dest.writeInt(0); 1643 } 1644 TextUtils.writeToParcel(description, dest, 1645 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1646 dest.writeInt(numActivities); 1647 dest.writeInt(numRunning); 1648 dest.writeInt(isDockable ? 1 : 0); 1649 dest.writeInt(resizeMode); 1650 } 1651 1652 public void readFromParcel(Parcel source) { 1653 id = source.readInt(); 1654 stackId = source.readInt(); 1655 baseActivity = ComponentName.readFromParcel(source); 1656 topActivity = ComponentName.readFromParcel(source); 1657 if (source.readInt() != 0) { 1658 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1659 } else { 1660 thumbnail = null; 1661 } 1662 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1663 numActivities = source.readInt(); 1664 numRunning = source.readInt(); 1665 isDockable = source.readInt() != 0; 1666 resizeMode = source.readInt(); 1667 } 1668 1669 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1670 public RunningTaskInfo createFromParcel(Parcel source) { 1671 return new RunningTaskInfo(source); 1672 } 1673 public RunningTaskInfo[] newArray(int size) { 1674 return new RunningTaskInfo[size]; 1675 } 1676 }; 1677 1678 private RunningTaskInfo(Parcel source) { 1679 readFromParcel(source); 1680 } 1681 } 1682 1683 /** 1684 * Get the list of tasks associated with the calling application. 1685 * 1686 * @return The list of tasks associated with the application making this call. 1687 * @throws SecurityException 1688 */ 1689 public List<ActivityManager.AppTask> getAppTasks() { 1690 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1691 List<IBinder> appTasks; 1692 try { 1693 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1694 } catch (RemoteException e) { 1695 throw e.rethrowFromSystemServer(); 1696 } 1697 int numAppTasks = appTasks.size(); 1698 for (int i = 0; i < numAppTasks; i++) { 1699 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1700 } 1701 return tasks; 1702 } 1703 1704 /** 1705 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1706 * with {@link #addAppTask}. 1707 */ 1708 public Size getAppTaskThumbnailSize() { 1709 synchronized (this) { 1710 ensureAppTaskThumbnailSizeLocked(); 1711 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1712 } 1713 } 1714 1715 private void ensureAppTaskThumbnailSizeLocked() { 1716 if (mAppTaskThumbnailSize == null) { 1717 try { 1718 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1719 } catch (RemoteException e) { 1720 throw e.rethrowFromSystemServer(); 1721 } 1722 } 1723 } 1724 1725 /** 1726 * Add a new {@link AppTask} for the calling application. This will create a new 1727 * recents entry that is added to the <b>end</b> of all existing recents. 1728 * 1729 * @param activity The activity that is adding the entry. This is used to help determine 1730 * the context that the new recents entry will be in. 1731 * @param intent The Intent that describes the recents entry. This is the same Intent that 1732 * you would have used to launch the activity for it. In generally you will want to set 1733 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1734 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1735 * entry will exist without an activity, so it doesn't make sense to not retain it when 1736 * its activity disappears. The given Intent here also must have an explicit ComponentName 1737 * set on it. 1738 * @param description Optional additional description information. 1739 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1740 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1741 * recreated in your process, probably in a way you don't like, before the recents entry 1742 * is added. 1743 * 1744 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1745 * most likely cause of failure is that there is no more room for more tasks for your app. 1746 */ 1747 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1748 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1749 Point size; 1750 synchronized (this) { 1751 ensureAppTaskThumbnailSizeLocked(); 1752 size = mAppTaskThumbnailSize; 1753 } 1754 final int tw = thumbnail.getWidth(); 1755 final int th = thumbnail.getHeight(); 1756 if (tw != size.x || th != size.y) { 1757 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1758 1759 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1760 float scale; 1761 float dx = 0, dy = 0; 1762 if (tw * size.x > size.y * th) { 1763 scale = (float) size.x / (float) th; 1764 dx = (size.y - tw * scale) * 0.5f; 1765 } else { 1766 scale = (float) size.y / (float) tw; 1767 dy = (size.x - th * scale) * 0.5f; 1768 } 1769 Matrix matrix = new Matrix(); 1770 matrix.setScale(scale, scale); 1771 matrix.postTranslate((int) (dx + 0.5f), 0); 1772 1773 Canvas canvas = new Canvas(bm); 1774 canvas.drawBitmap(thumbnail, matrix, null); 1775 canvas.setBitmap(null); 1776 1777 thumbnail = bm; 1778 } 1779 if (description == null) { 1780 description = new TaskDescription(); 1781 } 1782 try { 1783 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1784 intent, description, thumbnail); 1785 } catch (RemoteException e) { 1786 throw e.rethrowFromSystemServer(); 1787 } 1788 } 1789 1790 /** 1791 * Return a list of the tasks that are currently running, with 1792 * the most recent being first and older ones after in order. Note that 1793 * "running" does not mean any of the task's code is currently loaded or 1794 * activity -- the task may have been frozen by the system, so that it 1795 * can be restarted in its previous state when next brought to the 1796 * foreground. 1797 * 1798 * <p><b>Note: this method is only intended for debugging and presenting 1799 * task management user interfaces</b>. This should never be used for 1800 * core logic in an application, such as deciding between different 1801 * behaviors based on the information found here. Such uses are 1802 * <em>not</em> supported, and will likely break in the future. For 1803 * example, if multiple applications can be actively running at the 1804 * same time, assumptions made about the meaning of the data here for 1805 * purposes of control flow will be incorrect.</p> 1806 * 1807 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1808 * is no longer available to third party 1809 * applications: the introduction of document-centric recents means 1810 * it can leak person information to the caller. For backwards compatibility, 1811 * it will still retu rn a small subset of its data: at least the caller's 1812 * own tasks, and possibly some other tasks 1813 * such as home that are known to not be sensitive. 1814 * 1815 * @param maxNum The maximum number of entries to return in the list. The 1816 * actual number returned may be smaller, depending on how many tasks the 1817 * user has started. 1818 * 1819 * @return Returns a list of RunningTaskInfo records describing each of 1820 * the running tasks. 1821 */ 1822 @Deprecated 1823 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1824 throws SecurityException { 1825 try { 1826 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1827 } catch (RemoteException e) { 1828 throw e.rethrowFromSystemServer(); 1829 } 1830 } 1831 1832 /** 1833 * Completely remove the given task. 1834 * 1835 * @param taskId Identifier of the task to be removed. 1836 * @return Returns true if the given task was found and removed. 1837 * 1838 * @hide 1839 */ 1840 public boolean removeTask(int taskId) throws SecurityException { 1841 try { 1842 return ActivityManagerNative.getDefault().removeTask(taskId); 1843 } catch (RemoteException e) { 1844 throw e.rethrowFromSystemServer(); 1845 } 1846 } 1847 1848 /** 1849 * Metadata related to the {@link TaskThumbnail}. 1850 * 1851 * @hide 1852 */ 1853 public static class TaskThumbnailInfo implements Parcelable { 1854 /** @hide */ 1855 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1856 private static final String ATTR_TASK_WIDTH = 1857 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1858 private static final String ATTR_TASK_HEIGHT = 1859 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1860 private static final String ATTR_SCREEN_ORIENTATION = 1861 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1862 1863 public int taskWidth; 1864 public int taskHeight; 1865 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1866 1867 public TaskThumbnailInfo() { 1868 // Do nothing 1869 } 1870 1871 private TaskThumbnailInfo(Parcel source) { 1872 readFromParcel(source); 1873 } 1874 1875 /** 1876 * Resets this info state to the initial state. 1877 * @hide 1878 */ 1879 public void reset() { 1880 taskWidth = 0; 1881 taskHeight = 0; 1882 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1883 } 1884 1885 /** 1886 * Copies from another ThumbnailInfo. 1887 */ 1888 public void copyFrom(TaskThumbnailInfo o) { 1889 taskWidth = o.taskWidth; 1890 taskHeight = o.taskHeight; 1891 screenOrientation = o.screenOrientation; 1892 } 1893 1894 /** @hide */ 1895 public void saveToXml(XmlSerializer out) throws IOException { 1896 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1897 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1898 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1899 } 1900 1901 /** @hide */ 1902 public void restoreFromXml(String attrName, String attrValue) { 1903 if (ATTR_TASK_WIDTH.equals(attrName)) { 1904 taskWidth = Integer.parseInt(attrValue); 1905 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1906 taskHeight = Integer.parseInt(attrValue); 1907 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1908 screenOrientation = Integer.parseInt(attrValue); 1909 } 1910 } 1911 1912 public int describeContents() { 1913 return 0; 1914 } 1915 1916 public void writeToParcel(Parcel dest, int flags) { 1917 dest.writeInt(taskWidth); 1918 dest.writeInt(taskHeight); 1919 dest.writeInt(screenOrientation); 1920 } 1921 1922 public void readFromParcel(Parcel source) { 1923 taskWidth = source.readInt(); 1924 taskHeight = source.readInt(); 1925 screenOrientation = source.readInt(); 1926 } 1927 1928 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1929 public TaskThumbnailInfo createFromParcel(Parcel source) { 1930 return new TaskThumbnailInfo(source); 1931 } 1932 public TaskThumbnailInfo[] newArray(int size) { 1933 return new TaskThumbnailInfo[size]; 1934 } 1935 }; 1936 } 1937 1938 /** @hide */ 1939 public static class TaskThumbnail implements Parcelable { 1940 public Bitmap mainThumbnail; 1941 public ParcelFileDescriptor thumbnailFileDescriptor; 1942 public TaskThumbnailInfo thumbnailInfo; 1943 1944 public TaskThumbnail() { 1945 } 1946 1947 private TaskThumbnail(Parcel source) { 1948 readFromParcel(source); 1949 } 1950 1951 public int describeContents() { 1952 if (thumbnailFileDescriptor != null) { 1953 return thumbnailFileDescriptor.describeContents(); 1954 } 1955 return 0; 1956 } 1957 1958 public void writeToParcel(Parcel dest, int flags) { 1959 if (mainThumbnail != null) { 1960 dest.writeInt(1); 1961 mainThumbnail.writeToParcel(dest, flags); 1962 } else { 1963 dest.writeInt(0); 1964 } 1965 if (thumbnailFileDescriptor != null) { 1966 dest.writeInt(1); 1967 thumbnailFileDescriptor.writeToParcel(dest, flags); 1968 } else { 1969 dest.writeInt(0); 1970 } 1971 if (thumbnailInfo != null) { 1972 dest.writeInt(1); 1973 thumbnailInfo.writeToParcel(dest, flags); 1974 } else { 1975 dest.writeInt(0); 1976 } 1977 } 1978 1979 public void readFromParcel(Parcel source) { 1980 if (source.readInt() != 0) { 1981 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1982 } else { 1983 mainThumbnail = null; 1984 } 1985 if (source.readInt() != 0) { 1986 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1987 } else { 1988 thumbnailFileDescriptor = null; 1989 } 1990 if (source.readInt() != 0) { 1991 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1992 } else { 1993 thumbnailInfo = null; 1994 } 1995 } 1996 1997 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1998 public TaskThumbnail createFromParcel(Parcel source) { 1999 return new TaskThumbnail(source); 2000 } 2001 public TaskThumbnail[] newArray(int size) { 2002 return new TaskThumbnail[size]; 2003 } 2004 }; 2005 } 2006 2007 /** @hide */ 2008 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2009 try { 2010 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 2011 } catch (RemoteException e) { 2012 throw e.rethrowFromSystemServer(); 2013 } 2014 } 2015 2016 /** @hide */ 2017 public boolean isInHomeStack(int taskId) { 2018 try { 2019 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 2020 } catch (RemoteException e) { 2021 throw e.rethrowFromSystemServer(); 2022 } 2023 } 2024 2025 /** 2026 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2027 * activity along with the task, so it is positioned immediately behind 2028 * the task. 2029 */ 2030 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2031 2032 /** 2033 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2034 * user-instigated action, so the current activity will not receive a 2035 * hint that the user is leaving. 2036 */ 2037 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2038 2039 /** 2040 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2041 * with a null options argument. 2042 * 2043 * @param taskId The identifier of the task to be moved, as found in 2044 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2045 * @param flags Additional operational flags, 0 or more of 2046 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2047 */ 2048 public void moveTaskToFront(int taskId, int flags) { 2049 moveTaskToFront(taskId, flags, null); 2050 } 2051 2052 /** 2053 * Ask that the task associated with a given task ID be moved to the 2054 * front of the stack, so it is now visible to the user. Requires that 2055 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2056 * or a SecurityException will be thrown. 2057 * 2058 * @param taskId The identifier of the task to be moved, as found in 2059 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2060 * @param flags Additional operational flags, 0 or more of 2061 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2062 * @param options Additional options for the operation, either null or 2063 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2064 * Context.startActivity(Intent, Bundle)}. 2065 */ 2066 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2067 try { 2068 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 2069 } catch (RemoteException e) { 2070 throw e.rethrowFromSystemServer(); 2071 } 2072 } 2073 2074 /** 2075 * Information you can retrieve about a particular Service that is 2076 * currently running in the system. 2077 */ 2078 public static class RunningServiceInfo implements Parcelable { 2079 /** 2080 * The service component. 2081 */ 2082 public ComponentName service; 2083 2084 /** 2085 * If non-zero, this is the process the service is running in. 2086 */ 2087 public int pid; 2088 2089 /** 2090 * The UID that owns this service. 2091 */ 2092 public int uid; 2093 2094 /** 2095 * The name of the process this service runs in. 2096 */ 2097 public String process; 2098 2099 /** 2100 * Set to true if the service has asked to run as a foreground process. 2101 */ 2102 public boolean foreground; 2103 2104 /** 2105 * The time when the service was first made active, either by someone 2106 * starting or binding to it. This 2107 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2108 */ 2109 public long activeSince; 2110 2111 /** 2112 * Set to true if this service has been explicitly started. 2113 */ 2114 public boolean started; 2115 2116 /** 2117 * Number of clients connected to the service. 2118 */ 2119 public int clientCount; 2120 2121 /** 2122 * Number of times the service's process has crashed while the service 2123 * is running. 2124 */ 2125 public int crashCount; 2126 2127 /** 2128 * The time when there was last activity in the service (either 2129 * explicit requests to start it or clients binding to it). This 2130 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2131 */ 2132 public long lastActivityTime; 2133 2134 /** 2135 * If non-zero, this service is not currently running, but scheduled to 2136 * restart at the given time. 2137 */ 2138 public long restarting; 2139 2140 /** 2141 * Bit for {@link #flags}: set if this service has been 2142 * explicitly started. 2143 */ 2144 public static final int FLAG_STARTED = 1<<0; 2145 2146 /** 2147 * Bit for {@link #flags}: set if the service has asked to 2148 * run as a foreground process. 2149 */ 2150 public static final int FLAG_FOREGROUND = 1<<1; 2151 2152 /** 2153 * Bit for {@link #flags): set if the service is running in a 2154 * core system process. 2155 */ 2156 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2157 2158 /** 2159 * Bit for {@link #flags): set if the service is running in a 2160 * persistent process. 2161 */ 2162 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2163 2164 /** 2165 * Running flags. 2166 */ 2167 public int flags; 2168 2169 /** 2170 * For special services that are bound to by system code, this is 2171 * the package that holds the binding. 2172 */ 2173 public String clientPackage; 2174 2175 /** 2176 * For special services that are bound to by system code, this is 2177 * a string resource providing a user-visible label for who the 2178 * client is. 2179 */ 2180 public int clientLabel; 2181 2182 public RunningServiceInfo() { 2183 } 2184 2185 public int describeContents() { 2186 return 0; 2187 } 2188 2189 public void writeToParcel(Parcel dest, int flags) { 2190 ComponentName.writeToParcel(service, dest); 2191 dest.writeInt(pid); 2192 dest.writeInt(uid); 2193 dest.writeString(process); 2194 dest.writeInt(foreground ? 1 : 0); 2195 dest.writeLong(activeSince); 2196 dest.writeInt(started ? 1 : 0); 2197 dest.writeInt(clientCount); 2198 dest.writeInt(crashCount); 2199 dest.writeLong(lastActivityTime); 2200 dest.writeLong(restarting); 2201 dest.writeInt(this.flags); 2202 dest.writeString(clientPackage); 2203 dest.writeInt(clientLabel); 2204 } 2205 2206 public void readFromParcel(Parcel source) { 2207 service = ComponentName.readFromParcel(source); 2208 pid = source.readInt(); 2209 uid = source.readInt(); 2210 process = source.readString(); 2211 foreground = source.readInt() != 0; 2212 activeSince = source.readLong(); 2213 started = source.readInt() != 0; 2214 clientCount = source.readInt(); 2215 crashCount = source.readInt(); 2216 lastActivityTime = source.readLong(); 2217 restarting = source.readLong(); 2218 flags = source.readInt(); 2219 clientPackage = source.readString(); 2220 clientLabel = source.readInt(); 2221 } 2222 2223 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2224 public RunningServiceInfo createFromParcel(Parcel source) { 2225 return new RunningServiceInfo(source); 2226 } 2227 public RunningServiceInfo[] newArray(int size) { 2228 return new RunningServiceInfo[size]; 2229 } 2230 }; 2231 2232 private RunningServiceInfo(Parcel source) { 2233 readFromParcel(source); 2234 } 2235 } 2236 2237 /** 2238 * Return a list of the services that are currently running. 2239 * 2240 * <p><b>Note: this method is only intended for debugging or implementing 2241 * service management type user interfaces.</b></p> 2242 * 2243 * @param maxNum The maximum number of entries to return in the list. The 2244 * actual number returned may be smaller, depending on how many services 2245 * are running. 2246 * 2247 * @return Returns a list of RunningServiceInfo records describing each of 2248 * the running tasks. 2249 */ 2250 public List<RunningServiceInfo> getRunningServices(int maxNum) 2251 throws SecurityException { 2252 try { 2253 return ActivityManagerNative.getDefault() 2254 .getServices(maxNum, 0); 2255 } catch (RemoteException e) { 2256 throw e.rethrowFromSystemServer(); 2257 } 2258 } 2259 2260 /** 2261 * Returns a PendingIntent you can start to show a control panel for the 2262 * given running service. If the service does not have a control panel, 2263 * null is returned. 2264 */ 2265 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2266 throws SecurityException { 2267 try { 2268 return ActivityManagerNative.getDefault() 2269 .getRunningServiceControlPanel(service); 2270 } catch (RemoteException e) { 2271 throw e.rethrowFromSystemServer(); 2272 } 2273 } 2274 2275 /** 2276 * Information you can retrieve about the available memory through 2277 * {@link ActivityManager#getMemoryInfo}. 2278 */ 2279 public static class MemoryInfo implements Parcelable { 2280 /** 2281 * The available memory on the system. This number should not 2282 * be considered absolute: due to the nature of the kernel, a significant 2283 * portion of this memory is actually in use and needed for the overall 2284 * system to run well. 2285 */ 2286 public long availMem; 2287 2288 /** 2289 * The total memory accessible by the kernel. This is basically the 2290 * RAM size of the device, not including below-kernel fixed allocations 2291 * like DMA buffers, RAM for the baseband CPU, etc. 2292 */ 2293 public long totalMem; 2294 2295 /** 2296 * The threshold of {@link #availMem} at which we consider memory to be 2297 * low and start killing background services and other non-extraneous 2298 * processes. 2299 */ 2300 public long threshold; 2301 2302 /** 2303 * Set to true if the system considers itself to currently be in a low 2304 * memory situation. 2305 */ 2306 public boolean lowMemory; 2307 2308 /** @hide */ 2309 public long hiddenAppThreshold; 2310 /** @hide */ 2311 public long secondaryServerThreshold; 2312 /** @hide */ 2313 public long visibleAppThreshold; 2314 /** @hide */ 2315 public long foregroundAppThreshold; 2316 2317 public MemoryInfo() { 2318 } 2319 2320 public int describeContents() { 2321 return 0; 2322 } 2323 2324 public void writeToParcel(Parcel dest, int flags) { 2325 dest.writeLong(availMem); 2326 dest.writeLong(totalMem); 2327 dest.writeLong(threshold); 2328 dest.writeInt(lowMemory ? 1 : 0); 2329 dest.writeLong(hiddenAppThreshold); 2330 dest.writeLong(secondaryServerThreshold); 2331 dest.writeLong(visibleAppThreshold); 2332 dest.writeLong(foregroundAppThreshold); 2333 } 2334 2335 public void readFromParcel(Parcel source) { 2336 availMem = source.readLong(); 2337 totalMem = source.readLong(); 2338 threshold = source.readLong(); 2339 lowMemory = source.readInt() != 0; 2340 hiddenAppThreshold = source.readLong(); 2341 secondaryServerThreshold = source.readLong(); 2342 visibleAppThreshold = source.readLong(); 2343 foregroundAppThreshold = source.readLong(); 2344 } 2345 2346 public static final Creator<MemoryInfo> CREATOR 2347 = new Creator<MemoryInfo>() { 2348 public MemoryInfo createFromParcel(Parcel source) { 2349 return new MemoryInfo(source); 2350 } 2351 public MemoryInfo[] newArray(int size) { 2352 return new MemoryInfo[size]; 2353 } 2354 }; 2355 2356 private MemoryInfo(Parcel source) { 2357 readFromParcel(source); 2358 } 2359 } 2360 2361 /** 2362 * Return general information about the memory state of the system. This 2363 * can be used to help decide how to manage your own memory, though note 2364 * that polling is not recommended and 2365 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2366 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2367 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2368 * level of your process as needed, which gives a better hint for how to 2369 * manage its memory. 2370 */ 2371 public void getMemoryInfo(MemoryInfo outInfo) { 2372 try { 2373 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2374 } catch (RemoteException e) { 2375 throw e.rethrowFromSystemServer(); 2376 } 2377 } 2378 2379 /** 2380 * Information you can retrieve about an ActivityStack in the system. 2381 * @hide 2382 */ 2383 public static class StackInfo implements Parcelable { 2384 public int stackId; 2385 public Rect bounds = new Rect(); 2386 public int[] taskIds; 2387 public String[] taskNames; 2388 public Rect[] taskBounds; 2389 public int[] taskUserIds; 2390 public ComponentName topActivity; 2391 public int displayId; 2392 public int userId; 2393 public boolean visible; 2394 // Index of the stack in the display's stack list, can be used for comparison of stack order 2395 public int position; 2396 2397 @Override 2398 public int describeContents() { 2399 return 0; 2400 } 2401 2402 @Override 2403 public void writeToParcel(Parcel dest, int flags) { 2404 dest.writeInt(stackId); 2405 dest.writeInt(bounds.left); 2406 dest.writeInt(bounds.top); 2407 dest.writeInt(bounds.right); 2408 dest.writeInt(bounds.bottom); 2409 dest.writeIntArray(taskIds); 2410 dest.writeStringArray(taskNames); 2411 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2412 dest.writeInt(boundsCount); 2413 for (int i = 0; i < boundsCount; i++) { 2414 dest.writeInt(taskBounds[i].left); 2415 dest.writeInt(taskBounds[i].top); 2416 dest.writeInt(taskBounds[i].right); 2417 dest.writeInt(taskBounds[i].bottom); 2418 } 2419 dest.writeIntArray(taskUserIds); 2420 dest.writeInt(displayId); 2421 dest.writeInt(userId); 2422 dest.writeInt(visible ? 1 : 0); 2423 dest.writeInt(position); 2424 if (topActivity != null) { 2425 dest.writeInt(1); 2426 topActivity.writeToParcel(dest, 0); 2427 } else { 2428 dest.writeInt(0); 2429 } 2430 } 2431 2432 public void readFromParcel(Parcel source) { 2433 stackId = source.readInt(); 2434 bounds = new Rect( 2435 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2436 taskIds = source.createIntArray(); 2437 taskNames = source.createStringArray(); 2438 final int boundsCount = source.readInt(); 2439 if (boundsCount > 0) { 2440 taskBounds = new Rect[boundsCount]; 2441 for (int i = 0; i < boundsCount; i++) { 2442 taskBounds[i] = new Rect(); 2443 taskBounds[i].set( 2444 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2445 } 2446 } else { 2447 taskBounds = null; 2448 } 2449 taskUserIds = source.createIntArray(); 2450 displayId = source.readInt(); 2451 userId = source.readInt(); 2452 visible = source.readInt() > 0; 2453 position = source.readInt(); 2454 if (source.readInt() > 0) { 2455 topActivity = ComponentName.readFromParcel(source); 2456 } 2457 } 2458 2459 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2460 @Override 2461 public StackInfo createFromParcel(Parcel source) { 2462 return new StackInfo(source); 2463 } 2464 @Override 2465 public StackInfo[] newArray(int size) { 2466 return new StackInfo[size]; 2467 } 2468 }; 2469 2470 public StackInfo() { 2471 } 2472 2473 private StackInfo(Parcel source) { 2474 readFromParcel(source); 2475 } 2476 2477 public String toString(String prefix) { 2478 StringBuilder sb = new StringBuilder(256); 2479 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2480 sb.append(" bounds="); sb.append(bounds.toShortString()); 2481 sb.append(" displayId="); sb.append(displayId); 2482 sb.append(" userId="); sb.append(userId); 2483 sb.append("\n"); 2484 prefix = prefix + " "; 2485 for (int i = 0; i < taskIds.length; ++i) { 2486 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2487 sb.append(": "); sb.append(taskNames[i]); 2488 if (taskBounds != null) { 2489 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2490 } 2491 sb.append(" userId=").append(taskUserIds[i]); 2492 sb.append(" visible=").append(visible); 2493 if (topActivity != null) { 2494 sb.append(" topActivity=").append(topActivity); 2495 } 2496 sb.append("\n"); 2497 } 2498 return sb.toString(); 2499 } 2500 2501 @Override 2502 public String toString() { 2503 return toString(""); 2504 } 2505 } 2506 2507 /** 2508 * @hide 2509 */ 2510 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2511 try { 2512 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2513 observer, UserHandle.myUserId()); 2514 } catch (RemoteException e) { 2515 throw e.rethrowFromSystemServer(); 2516 } 2517 } 2518 2519 /** 2520 * Permits an application to erase its own data from disk. This is equivalent to 2521 * the user choosing to clear the app's data from within the device settings UI. It 2522 * erases all dynamic data associated with the app -- its private data and data in its 2523 * private area on external storage -- but does not remove the installed application 2524 * itself, nor any OBB files. 2525 * 2526 * @return {@code true} if the application successfully requested that the application's 2527 * data be erased; {@code false} otherwise. 2528 */ 2529 public boolean clearApplicationUserData() { 2530 return clearApplicationUserData(mContext.getPackageName(), null); 2531 } 2532 2533 2534 /** 2535 * Permits an application to get the persistent URI permissions granted to another. 2536 * 2537 * <p>Typically called by Settings. 2538 * 2539 * @param packageName application to look for the granted permissions 2540 * @return list of granted URI permissions 2541 * 2542 * @hide 2543 */ 2544 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2545 try { 2546 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2547 UserHandle.myUserId()); 2548 } catch (RemoteException e) { 2549 throw e.rethrowFromSystemServer(); 2550 } 2551 } 2552 2553 /** 2554 * Permits an application to clear the persistent URI permissions granted to another. 2555 * 2556 * <p>Typically called by Settings. 2557 * 2558 * @param packageName application to clear its granted permissions 2559 * 2560 * @hide 2561 */ 2562 public void clearGrantedUriPermissions(String packageName) { 2563 try { 2564 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2565 UserHandle.myUserId()); 2566 } catch (RemoteException e) { 2567 throw e.rethrowFromSystemServer(); 2568 } 2569 } 2570 2571 /** 2572 * Information you can retrieve about any processes that are in an error condition. 2573 */ 2574 public static class ProcessErrorStateInfo implements Parcelable { 2575 /** 2576 * Condition codes 2577 */ 2578 public static final int NO_ERROR = 0; 2579 public static final int CRASHED = 1; 2580 public static final int NOT_RESPONDING = 2; 2581 2582 /** 2583 * The condition that the process is in. 2584 */ 2585 public int condition; 2586 2587 /** 2588 * The process name in which the crash or error occurred. 2589 */ 2590 public String processName; 2591 2592 /** 2593 * The pid of this process; 0 if none 2594 */ 2595 public int pid; 2596 2597 /** 2598 * The kernel user-ID that has been assigned to this process; 2599 * currently this is not a unique ID (multiple applications can have 2600 * the same uid). 2601 */ 2602 public int uid; 2603 2604 /** 2605 * The activity name associated with the error, if known. May be null. 2606 */ 2607 public String tag; 2608 2609 /** 2610 * A short message describing the error condition. 2611 */ 2612 public String shortMsg; 2613 2614 /** 2615 * A long message describing the error condition. 2616 */ 2617 public String longMsg; 2618 2619 /** 2620 * The stack trace where the error originated. May be null. 2621 */ 2622 public String stackTrace; 2623 2624 /** 2625 * to be deprecated: This value will always be null. 2626 */ 2627 public byte[] crashData = null; 2628 2629 public ProcessErrorStateInfo() { 2630 } 2631 2632 @Override 2633 public int describeContents() { 2634 return 0; 2635 } 2636 2637 @Override 2638 public void writeToParcel(Parcel dest, int flags) { 2639 dest.writeInt(condition); 2640 dest.writeString(processName); 2641 dest.writeInt(pid); 2642 dest.writeInt(uid); 2643 dest.writeString(tag); 2644 dest.writeString(shortMsg); 2645 dest.writeString(longMsg); 2646 dest.writeString(stackTrace); 2647 } 2648 2649 public void readFromParcel(Parcel source) { 2650 condition = source.readInt(); 2651 processName = source.readString(); 2652 pid = source.readInt(); 2653 uid = source.readInt(); 2654 tag = source.readString(); 2655 shortMsg = source.readString(); 2656 longMsg = source.readString(); 2657 stackTrace = source.readString(); 2658 } 2659 2660 public static final Creator<ProcessErrorStateInfo> CREATOR = 2661 new Creator<ProcessErrorStateInfo>() { 2662 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2663 return new ProcessErrorStateInfo(source); 2664 } 2665 public ProcessErrorStateInfo[] newArray(int size) { 2666 return new ProcessErrorStateInfo[size]; 2667 } 2668 }; 2669 2670 private ProcessErrorStateInfo(Parcel source) { 2671 readFromParcel(source); 2672 } 2673 } 2674 2675 /** 2676 * Returns a list of any processes that are currently in an error condition. The result 2677 * will be null if all processes are running properly at this time. 2678 * 2679 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2680 * current error conditions (it will not return an empty list). This list ordering is not 2681 * specified. 2682 */ 2683 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2684 try { 2685 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2686 } catch (RemoteException e) { 2687 throw e.rethrowFromSystemServer(); 2688 } 2689 } 2690 2691 /** 2692 * Information you can retrieve about a running process. 2693 */ 2694 public static class RunningAppProcessInfo implements Parcelable { 2695 /** 2696 * The name of the process that this object is associated with 2697 */ 2698 public String processName; 2699 2700 /** 2701 * The pid of this process; 0 if none 2702 */ 2703 public int pid; 2704 2705 /** 2706 * The user id of this process. 2707 */ 2708 public int uid; 2709 2710 /** 2711 * All packages that have been loaded into the process. 2712 */ 2713 public String pkgList[]; 2714 2715 /** 2716 * Constant for {@link #flags}: this is an app that is unable to 2717 * correctly save its state when going to the background, 2718 * so it can not be killed while in the background. 2719 * @hide 2720 */ 2721 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2722 2723 /** 2724 * Constant for {@link #flags}: this process is associated with a 2725 * persistent system app. 2726 * @hide 2727 */ 2728 public static final int FLAG_PERSISTENT = 1<<1; 2729 2730 /** 2731 * Constant for {@link #flags}: this process is associated with a 2732 * persistent system app. 2733 * @hide 2734 */ 2735 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2736 2737 /** 2738 * Flags of information. May be any of 2739 * {@link #FLAG_CANT_SAVE_STATE}. 2740 * @hide 2741 */ 2742 public int flags; 2743 2744 /** 2745 * Last memory trim level reported to the process: corresponds to 2746 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2747 * ComponentCallbacks2.onTrimMemory(int)}. 2748 */ 2749 public int lastTrimLevel; 2750 2751 /** 2752 * Constant for {@link #importance}: This process is running the 2753 * foreground UI; that is, it is the thing currently at the top of the screen 2754 * that the user is interacting with. 2755 */ 2756 public static final int IMPORTANCE_FOREGROUND = 100; 2757 2758 /** 2759 * Constant for {@link #importance}: This process is running a foreground 2760 * service, for example to perform music playback even while the user is 2761 * not immediately in the app. This generally indicates that the process 2762 * is doing something the user actively cares about. 2763 */ 2764 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2765 2766 /** 2767 * Constant for {@link #importance}: This process is running the foreground 2768 * UI, but the device is asleep so it is not visible to the user. This means 2769 * the user is not really aware of the process, because they can not see or 2770 * interact with it, but it is quite important because it what they expect to 2771 * return to once unlocking the device. 2772 */ 2773 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2774 2775 /** 2776 * Constant for {@link #importance}: This process is running something 2777 * that is actively visible to the user, though not in the immediate 2778 * foreground. This may be running a window that is behind the current 2779 * foreground (so paused and with its state saved, not interacting with 2780 * the user, but visible to them to some degree); it may also be running 2781 * other services under the system's control that it inconsiders important. 2782 */ 2783 public static final int IMPORTANCE_VISIBLE = 200; 2784 2785 /** 2786 * Constant for {@link #importance}: This process is not something the user 2787 * is directly aware of, but is otherwise perceptable to them to some degree. 2788 */ 2789 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2790 2791 /** 2792 * Constant for {@link #importance}: This process is running an 2793 * application that can not save its state, and thus can't be killed 2794 * while in the background. 2795 * @hide 2796 */ 2797 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2798 2799 /** 2800 * Constant for {@link #importance}: This process is contains services 2801 * that should remain running. These are background services apps have 2802 * started, not something the user is aware of, so they may be killed by 2803 * the system relatively freely (though it is generally desired that they 2804 * stay running as long as they want to). 2805 */ 2806 public static final int IMPORTANCE_SERVICE = 300; 2807 2808 /** 2809 * Constant for {@link #importance}: This process process contains 2810 * background code that is expendable. 2811 */ 2812 public static final int IMPORTANCE_BACKGROUND = 400; 2813 2814 /** 2815 * Constant for {@link #importance}: This process is empty of any 2816 * actively running code. 2817 */ 2818 public static final int IMPORTANCE_EMPTY = 500; 2819 2820 /** 2821 * Constant for {@link #importance}: This process does not exist. 2822 */ 2823 public static final int IMPORTANCE_GONE = 1000; 2824 2825 /** @hide */ 2826 public static int procStateToImportance(int procState) { 2827 if (procState == PROCESS_STATE_NONEXISTENT) { 2828 return IMPORTANCE_GONE; 2829 } else if (procState >= PROCESS_STATE_HOME) { 2830 return IMPORTANCE_BACKGROUND; 2831 } else if (procState >= PROCESS_STATE_SERVICE) { 2832 return IMPORTANCE_SERVICE; 2833 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2834 return IMPORTANCE_CANT_SAVE_STATE; 2835 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2836 return IMPORTANCE_PERCEPTIBLE; 2837 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2838 return IMPORTANCE_VISIBLE; 2839 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2840 return IMPORTANCE_TOP_SLEEPING; 2841 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2842 return IMPORTANCE_FOREGROUND_SERVICE; 2843 } else { 2844 return IMPORTANCE_FOREGROUND; 2845 } 2846 } 2847 2848 /** 2849 * The relative importance level that the system places on this 2850 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2851 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2852 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2853 * constants are numbered so that "more important" values are always 2854 * smaller than "less important" values. 2855 */ 2856 public int importance; 2857 2858 /** 2859 * An additional ordering within a particular {@link #importance} 2860 * category, providing finer-grained information about the relative 2861 * utility of processes within a category. This number means nothing 2862 * except that a smaller values are more recently used (and thus 2863 * more important). Currently an LRU value is only maintained for 2864 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2865 * be maintained in the future. 2866 */ 2867 public int lru; 2868 2869 /** 2870 * Constant for {@link #importanceReasonCode}: nothing special has 2871 * been specified for the reason for this level. 2872 */ 2873 public static final int REASON_UNKNOWN = 0; 2874 2875 /** 2876 * Constant for {@link #importanceReasonCode}: one of the application's 2877 * content providers is being used by another process. The pid of 2878 * the client process is in {@link #importanceReasonPid} and the 2879 * target provider in this process is in 2880 * {@link #importanceReasonComponent}. 2881 */ 2882 public static final int REASON_PROVIDER_IN_USE = 1; 2883 2884 /** 2885 * Constant for {@link #importanceReasonCode}: one of the application's 2886 * content providers is being used by another process. The pid of 2887 * the client process is in {@link #importanceReasonPid} and the 2888 * target provider in this process is in 2889 * {@link #importanceReasonComponent}. 2890 */ 2891 public static final int REASON_SERVICE_IN_USE = 2; 2892 2893 /** 2894 * The reason for {@link #importance}, if any. 2895 */ 2896 public int importanceReasonCode; 2897 2898 /** 2899 * For the specified values of {@link #importanceReasonCode}, this 2900 * is the process ID of the other process that is a client of this 2901 * process. This will be 0 if no other process is using this one. 2902 */ 2903 public int importanceReasonPid; 2904 2905 /** 2906 * For the specified values of {@link #importanceReasonCode}, this 2907 * is the name of the component that is being used in this process. 2908 */ 2909 public ComponentName importanceReasonComponent; 2910 2911 /** 2912 * When {@link #importanceReasonPid} is non-0, this is the importance 2913 * of the other pid. @hide 2914 */ 2915 public int importanceReasonImportance; 2916 2917 /** 2918 * Current process state, as per PROCESS_STATE_* constants. 2919 * @hide 2920 */ 2921 public int processState; 2922 2923 public RunningAppProcessInfo() { 2924 importance = IMPORTANCE_FOREGROUND; 2925 importanceReasonCode = REASON_UNKNOWN; 2926 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2927 } 2928 2929 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2930 processName = pProcessName; 2931 pid = pPid; 2932 pkgList = pArr; 2933 } 2934 2935 public int describeContents() { 2936 return 0; 2937 } 2938 2939 public void writeToParcel(Parcel dest, int flags) { 2940 dest.writeString(processName); 2941 dest.writeInt(pid); 2942 dest.writeInt(uid); 2943 dest.writeStringArray(pkgList); 2944 dest.writeInt(this.flags); 2945 dest.writeInt(lastTrimLevel); 2946 dest.writeInt(importance); 2947 dest.writeInt(lru); 2948 dest.writeInt(importanceReasonCode); 2949 dest.writeInt(importanceReasonPid); 2950 ComponentName.writeToParcel(importanceReasonComponent, dest); 2951 dest.writeInt(importanceReasonImportance); 2952 dest.writeInt(processState); 2953 } 2954 2955 public void readFromParcel(Parcel source) { 2956 processName = source.readString(); 2957 pid = source.readInt(); 2958 uid = source.readInt(); 2959 pkgList = source.readStringArray(); 2960 flags = source.readInt(); 2961 lastTrimLevel = source.readInt(); 2962 importance = source.readInt(); 2963 lru = source.readInt(); 2964 importanceReasonCode = source.readInt(); 2965 importanceReasonPid = source.readInt(); 2966 importanceReasonComponent = ComponentName.readFromParcel(source); 2967 importanceReasonImportance = source.readInt(); 2968 processState = source.readInt(); 2969 } 2970 2971 public static final Creator<RunningAppProcessInfo> CREATOR = 2972 new Creator<RunningAppProcessInfo>() { 2973 public RunningAppProcessInfo createFromParcel(Parcel source) { 2974 return new RunningAppProcessInfo(source); 2975 } 2976 public RunningAppProcessInfo[] newArray(int size) { 2977 return new RunningAppProcessInfo[size]; 2978 } 2979 }; 2980 2981 private RunningAppProcessInfo(Parcel source) { 2982 readFromParcel(source); 2983 } 2984 } 2985 2986 /** 2987 * Returns a list of application processes installed on external media 2988 * that are running on the device. 2989 * 2990 * <p><b>Note: this method is only intended for debugging or building 2991 * a user-facing process management UI.</b></p> 2992 * 2993 * @return Returns a list of ApplicationInfo records, or null if none 2994 * This list ordering is not specified. 2995 * @hide 2996 */ 2997 public List<ApplicationInfo> getRunningExternalApplications() { 2998 try { 2999 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 3000 } catch (RemoteException e) { 3001 throw e.rethrowFromSystemServer(); 3002 } 3003 } 3004 3005 /** 3006 * Sets the memory trim mode for a process and schedules a memory trim operation. 3007 * 3008 * <p><b>Note: this method is only intended for testing framework.</b></p> 3009 * 3010 * @return Returns true if successful. 3011 * @hide 3012 */ 3013 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3014 try { 3015 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 3016 level); 3017 } catch (RemoteException e) { 3018 throw e.rethrowFromSystemServer(); 3019 } 3020 } 3021 3022 /** 3023 * Returns a list of application processes that are running on the device. 3024 * 3025 * <p><b>Note: this method is only intended for debugging or building 3026 * a user-facing process management UI.</b></p> 3027 * 3028 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3029 * running processes (it will not return an empty list). This list ordering is not 3030 * specified. 3031 */ 3032 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3033 try { 3034 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 3035 } catch (RemoteException e) { 3036 throw e.rethrowFromSystemServer(); 3037 } 3038 } 3039 3040 /** 3041 * Return the importance of a given package name, based on the processes that are 3042 * currently running. The return value is one of the importance constants defined 3043 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3044 * processes that this package has code running inside of. If there are no processes 3045 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3046 * @hide 3047 */ 3048 @SystemApi 3049 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3050 public int getPackageImportance(String packageName) { 3051 try { 3052 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 3053 mContext.getOpPackageName()); 3054 return RunningAppProcessInfo.procStateToImportance(procState); 3055 } catch (RemoteException e) { 3056 throw e.rethrowFromSystemServer(); 3057 } 3058 } 3059 3060 /** 3061 * Return global memory state information for the calling process. This 3062 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3063 * only fields that will be filled in are 3064 * {@link RunningAppProcessInfo#pid}, 3065 * {@link RunningAppProcessInfo#uid}, 3066 * {@link RunningAppProcessInfo#lastTrimLevel}, 3067 * {@link RunningAppProcessInfo#importance}, 3068 * {@link RunningAppProcessInfo#lru}, and 3069 * {@link RunningAppProcessInfo#importanceReasonCode}. 3070 */ 3071 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3072 try { 3073 ActivityManagerNative.getDefault().getMyMemoryState(outState); 3074 } catch (RemoteException e) { 3075 throw e.rethrowFromSystemServer(); 3076 } 3077 } 3078 3079 /** 3080 * Return information about the memory usage of one or more processes. 3081 * 3082 * <p><b>Note: this method is only intended for debugging or building 3083 * a user-facing process management UI.</b></p> 3084 * 3085 * @param pids The pids of the processes whose memory usage is to be 3086 * retrieved. 3087 * @return Returns an array of memory information, one for each 3088 * requested pid. 3089 */ 3090 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3091 try { 3092 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 3093 } catch (RemoteException e) { 3094 throw e.rethrowFromSystemServer(); 3095 } 3096 } 3097 3098 /** 3099 * @deprecated This is now just a wrapper for 3100 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3101 * is no longer available to applications because it allows them to 3102 * break other applications by removing their alarms, stopping their 3103 * services, etc. 3104 */ 3105 @Deprecated 3106 public void restartPackage(String packageName) { 3107 killBackgroundProcesses(packageName); 3108 } 3109 3110 /** 3111 * Have the system immediately kill all background processes associated 3112 * with the given package. This is the same as the kernel killing those 3113 * processes to reclaim memory; the system will take care of restarting 3114 * these processes in the future as needed. 3115 * 3116 * <p>You must hold the permission 3117 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3118 * call this method. 3119 * 3120 * @param packageName The name of the package whose processes are to 3121 * be killed. 3122 */ 3123 public void killBackgroundProcesses(String packageName) { 3124 try { 3125 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 3126 UserHandle.myUserId()); 3127 } catch (RemoteException e) { 3128 throw e.rethrowFromSystemServer(); 3129 } 3130 } 3131 3132 /** 3133 * Kills the specified UID. 3134 * @param uid The UID to kill. 3135 * @param reason The reason for the kill. 3136 * 3137 * @hide 3138 */ 3139 @SystemApi 3140 @RequiresPermission(Manifest.permission.KILL_UID) 3141 public void killUid(int uid, String reason) { 3142 try { 3143 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3144 UserHandle.getUserId(uid), reason); 3145 } catch (RemoteException e) { 3146 throw e.rethrowFromSystemServer(); 3147 } 3148 } 3149 3150 /** 3151 * Have the system perform a force stop of everything associated with 3152 * the given application package. All processes that share its uid 3153 * will be killed, all services it has running stopped, all activities 3154 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3155 * broadcast will be sent, so that any of its registered alarms can 3156 * be stopped, notifications removed, etc. 3157 * 3158 * <p>You must hold the permission 3159 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3160 * call this method. 3161 * 3162 * @param packageName The name of the package to be stopped. 3163 * @param userId The user for which the running package is to be stopped. 3164 * 3165 * @hide This is not available to third party applications due to 3166 * it allowing them to break other applications by stopping their 3167 * services, removing their alarms, etc. 3168 */ 3169 public void forceStopPackageAsUser(String packageName, int userId) { 3170 try { 3171 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3172 } catch (RemoteException e) { 3173 throw e.rethrowFromSystemServer(); 3174 } 3175 } 3176 3177 /** 3178 * @see #forceStopPackageAsUser(String, int) 3179 * @hide 3180 */ 3181 public void forceStopPackage(String packageName) { 3182 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3183 } 3184 3185 /** 3186 * Get the device configuration attributes. 3187 */ 3188 public ConfigurationInfo getDeviceConfigurationInfo() { 3189 try { 3190 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3191 } catch (RemoteException e) { 3192 throw e.rethrowFromSystemServer(); 3193 } 3194 } 3195 3196 /** 3197 * Get the preferred density of icons for the launcher. This is used when 3198 * custom drawables are created (e.g., for shortcuts). 3199 * 3200 * @return density in terms of DPI 3201 */ 3202 public int getLauncherLargeIconDensity() { 3203 final Resources res = mContext.getResources(); 3204 final int density = res.getDisplayMetrics().densityDpi; 3205 final int sw = res.getConfiguration().smallestScreenWidthDp; 3206 3207 if (sw < 600) { 3208 // Smaller than approx 7" tablets, use the regular icon size. 3209 return density; 3210 } 3211 3212 switch (density) { 3213 case DisplayMetrics.DENSITY_LOW: 3214 return DisplayMetrics.DENSITY_MEDIUM; 3215 case DisplayMetrics.DENSITY_MEDIUM: 3216 return DisplayMetrics.DENSITY_HIGH; 3217 case DisplayMetrics.DENSITY_TV: 3218 return DisplayMetrics.DENSITY_XHIGH; 3219 case DisplayMetrics.DENSITY_HIGH: 3220 return DisplayMetrics.DENSITY_XHIGH; 3221 case DisplayMetrics.DENSITY_XHIGH: 3222 return DisplayMetrics.DENSITY_XXHIGH; 3223 case DisplayMetrics.DENSITY_XXHIGH: 3224 return DisplayMetrics.DENSITY_XHIGH * 2; 3225 default: 3226 // The density is some abnormal value. Return some other 3227 // abnormal value that is a reasonable scaling of it. 3228 return (int)((density*1.5f)+.5f); 3229 } 3230 } 3231 3232 /** 3233 * Get the preferred launcher icon size. This is used when custom drawables 3234 * are created (e.g., for shortcuts). 3235 * 3236 * @return dimensions of square icons in terms of pixels 3237 */ 3238 public int getLauncherLargeIconSize() { 3239 return getLauncherLargeIconSizeInner(mContext); 3240 } 3241 3242 static int getLauncherLargeIconSizeInner(Context context) { 3243 final Resources res = context.getResources(); 3244 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3245 final int sw = res.getConfiguration().smallestScreenWidthDp; 3246 3247 if (sw < 600) { 3248 // Smaller than approx 7" tablets, use the regular icon size. 3249 return size; 3250 } 3251 3252 final int density = res.getDisplayMetrics().densityDpi; 3253 3254 switch (density) { 3255 case DisplayMetrics.DENSITY_LOW: 3256 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3257 case DisplayMetrics.DENSITY_MEDIUM: 3258 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3259 case DisplayMetrics.DENSITY_TV: 3260 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3261 case DisplayMetrics.DENSITY_HIGH: 3262 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3263 case DisplayMetrics.DENSITY_XHIGH: 3264 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3265 case DisplayMetrics.DENSITY_XXHIGH: 3266 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3267 default: 3268 // The density is some abnormal value. Return some other 3269 // abnormal value that is a reasonable scaling of it. 3270 return (int)((size*1.5f) + .5f); 3271 } 3272 } 3273 3274 /** 3275 * Returns "true" if the user interface is currently being messed with 3276 * by a monkey. 3277 */ 3278 public static boolean isUserAMonkey() { 3279 try { 3280 return ActivityManagerNative.getDefault().isUserAMonkey(); 3281 } catch (RemoteException e) { 3282 throw e.rethrowFromSystemServer(); 3283 } 3284 } 3285 3286 /** 3287 * Returns "true" if device is running in a test harness. 3288 */ 3289 public static boolean isRunningInTestHarness() { 3290 return SystemProperties.getBoolean("ro.test_harness", false); 3291 } 3292 3293 /** 3294 * Returns the launch count of each installed package. 3295 * 3296 * @hide 3297 */ 3298 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3299 try { 3300 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3301 ServiceManager.getService("usagestats")); 3302 if (usageStatsService == null) { 3303 return new HashMap<String, Integer>(); 3304 } 3305 3306 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3307 ActivityThread.currentPackageName()); 3308 if (allPkgUsageStats == null) { 3309 return new HashMap<String, Integer>(); 3310 } 3311 3312 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3313 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3314 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3315 } 3316 3317 return launchCounts; 3318 } catch (RemoteException e) { 3319 Log.w(TAG, "Could not query launch counts", e); 3320 return new HashMap<String, Integer>(); 3321 } 3322 }*/ 3323 3324 /** @hide */ 3325 public static int checkComponentPermission(String permission, int uid, 3326 int owningUid, boolean exported) { 3327 // Root, system server get to do everything. 3328 final int appId = UserHandle.getAppId(uid); 3329 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3330 return PackageManager.PERMISSION_GRANTED; 3331 } 3332 // Isolated processes don't get any permissions. 3333 if (UserHandle.isIsolated(uid)) { 3334 return PackageManager.PERMISSION_DENIED; 3335 } 3336 // If there is a uid that owns whatever is being accessed, it has 3337 // blanket access to it regardless of the permissions it requires. 3338 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3339 return PackageManager.PERMISSION_GRANTED; 3340 } 3341 // If the target is not exported, then nobody else can get to it. 3342 if (!exported) { 3343 /* 3344 RuntimeException here = new RuntimeException("here"); 3345 here.fillInStackTrace(); 3346 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3347 here); 3348 */ 3349 return PackageManager.PERMISSION_DENIED; 3350 } 3351 if (permission == null) { 3352 return PackageManager.PERMISSION_GRANTED; 3353 } 3354 try { 3355 return AppGlobals.getPackageManager() 3356 .checkUidPermission(permission, uid); 3357 } catch (RemoteException e) { 3358 throw e.rethrowFromSystemServer(); 3359 } 3360 } 3361 3362 /** @hide */ 3363 public static int checkUidPermission(String permission, int uid) { 3364 try { 3365 return AppGlobals.getPackageManager() 3366 .checkUidPermission(permission, uid); 3367 } catch (RemoteException e) { 3368 throw e.rethrowFromSystemServer(); 3369 } 3370 } 3371 3372 /** 3373 * @hide 3374 * Helper for dealing with incoming user arguments to system service calls. 3375 * Takes care of checking permissions and converting USER_CURRENT to the 3376 * actual current user. 3377 * 3378 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3379 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3380 * @param userId The user id argument supplied by the caller -- this is the user 3381 * they want to run as. 3382 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3383 * to get a USER_ALL returned and deal with it correctly. If false, 3384 * an exception will be thrown if USER_ALL is supplied. 3385 * @param requireFull If true, the caller must hold 3386 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3387 * different user than their current process; otherwise they must hold 3388 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3389 * @param name Optional textual name of the incoming call; only for generating error messages. 3390 * @param callerPackage Optional package name of caller; only for error messages. 3391 * 3392 * @return Returns the user ID that the call should run as. Will always be a concrete 3393 * user number, unless <var>allowAll</var> is true in which case it could also be 3394 * USER_ALL. 3395 */ 3396 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3397 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3398 if (UserHandle.getUserId(callingUid) == userId) { 3399 return userId; 3400 } 3401 try { 3402 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3403 callingUid, userId, allowAll, requireFull, name, callerPackage); 3404 } catch (RemoteException e) { 3405 throw e.rethrowFromSystemServer(); 3406 } 3407 } 3408 3409 /** 3410 * Gets the userId of the current foreground user. Requires system permissions. 3411 * @hide 3412 */ 3413 @SystemApi 3414 public static int getCurrentUser() { 3415 UserInfo ui; 3416 try { 3417 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3418 return ui != null ? ui.id : 0; 3419 } catch (RemoteException e) { 3420 throw e.rethrowFromSystemServer(); 3421 } 3422 } 3423 3424 /** 3425 * @param userid the user's id. Zero indicates the default user. 3426 * @hide 3427 */ 3428 public boolean switchUser(int userid) { 3429 try { 3430 return ActivityManagerNative.getDefault().switchUser(userid); 3431 } catch (RemoteException e) { 3432 throw e.rethrowFromSystemServer(); 3433 } 3434 } 3435 3436 /** 3437 * Logs out current current foreground user by switching to the system user and stopping the 3438 * user being switched from. 3439 * @hide 3440 */ 3441 public static void logoutCurrentUser() { 3442 int currentUser = ActivityManager.getCurrentUser(); 3443 if (currentUser != UserHandle.USER_SYSTEM) { 3444 try { 3445 ActivityManagerNative.getDefault().switchUser(UserHandle.USER_SYSTEM); 3446 ActivityManagerNative.getDefault().stopUser(currentUser, /* force= */ false, null); 3447 } catch (RemoteException e) { 3448 e.rethrowFromSystemServer(); 3449 } 3450 } 3451 } 3452 3453 /** {@hide} */ 3454 public static final int FLAG_OR_STOPPED = 1 << 0; 3455 /** {@hide} */ 3456 public static final int FLAG_AND_LOCKED = 1 << 1; 3457 /** {@hide} */ 3458 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3459 /** {@hide} */ 3460 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3461 3462 /** 3463 * Return whether the given user is actively running. This means that 3464 * the user is in the "started" state, not "stopped" -- it is currently 3465 * allowed to run code through scheduled alarms, receiving broadcasts, 3466 * etc. A started user may be either the current foreground user or a 3467 * background user; the result here does not distinguish between the two. 3468 * @param userid the user's id. Zero indicates the default user. 3469 * @hide 3470 */ 3471 public boolean isUserRunning(int userId) { 3472 try { 3473 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3474 } catch (RemoteException e) { 3475 throw e.rethrowFromSystemServer(); 3476 } 3477 } 3478 3479 /** {@hide} */ 3480 public boolean isVrModePackageEnabled(ComponentName component) { 3481 try { 3482 return ActivityManagerNative.getDefault().isVrModePackageEnabled(component); 3483 } catch (RemoteException e) { 3484 throw e.rethrowFromSystemServer(); 3485 } 3486 } 3487 3488 /** 3489 * Perform a system dump of various state associated with the given application 3490 * package name. This call blocks while the dump is being performed, so should 3491 * not be done on a UI thread. The data will be written to the given file 3492 * descriptor as text. An application must hold the 3493 * {@link android.Manifest.permission#DUMP} permission to make this call. 3494 * @param fd The file descriptor that the dump should be written to. The file 3495 * descriptor is <em>not</em> closed by this function; the caller continues to 3496 * own it. 3497 * @param packageName The name of the package that is to be dumped. 3498 */ 3499 public void dumpPackageState(FileDescriptor fd, String packageName) { 3500 dumpPackageStateStatic(fd, packageName); 3501 } 3502 3503 /** 3504 * @hide 3505 */ 3506 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3507 FileOutputStream fout = new FileOutputStream(fd); 3508 PrintWriter pw = new FastPrintWriter(fout); 3509 dumpService(pw, fd, "package", new String[] { packageName }); 3510 pw.println(); 3511 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3512 "-a", "package", packageName }); 3513 pw.println(); 3514 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3515 pw.println(); 3516 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3517 pw.println(); 3518 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3519 pw.println(); 3520 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3521 pw.flush(); 3522 } 3523 3524 /** 3525 * @hide 3526 */ 3527 public static void broadcastStickyIntent(Intent intent, int userId) { 3528 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3529 } 3530 3531 /** 3532 * Convenience for sending a sticky broadcast. For internal use only. 3533 * 3534 * @hide 3535 */ 3536 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3537 try { 3538 getService().broadcastIntent( 3539 null, intent, null, null, Activity.RESULT_OK, null, null, 3540 null /*permission*/, appOp, null, false, true, userId); 3541 } catch (RemoteException ex) { 3542 } 3543 } 3544 3545 /** 3546 * @hide 3547 */ 3548 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3549 String tag) { 3550 try { 3551 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3552 sourceUid, sourcePkg, tag); 3553 } catch (RemoteException ex) { 3554 } 3555 } 3556 3557 /** 3558 * @hide 3559 */ 3560 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3561 try { 3562 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3563 } catch (RemoteException ex) { 3564 } 3565 } 3566 3567 /** 3568 * @hide 3569 */ 3570 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3571 try { 3572 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3573 } catch (RemoteException ex) { 3574 } 3575 } 3576 3577 /** 3578 * @hide 3579 */ 3580 public static IActivityManager getService() { 3581 return IActivityManagerSingleton.get(); 3582 } 3583 3584 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3585 new Singleton<IActivityManager>() { 3586 @Override 3587 protected IActivityManager create() { 3588 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3589 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3590 return am; 3591 } 3592 }; 3593 3594 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3595 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3596 IBinder service = ServiceManager.checkService(name); 3597 if (service == null) { 3598 pw.println(" (Service not found)"); 3599 return; 3600 } 3601 TransferPipe tp = null; 3602 try { 3603 pw.flush(); 3604 tp = new TransferPipe(); 3605 tp.setBufferPrefix(" "); 3606 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3607 tp.go(fd, 10000); 3608 } catch (Throwable e) { 3609 if (tp != null) { 3610 tp.kill(); 3611 } 3612 pw.println("Failure dumping service:"); 3613 e.printStackTrace(pw); 3614 } 3615 } 3616 3617 /** 3618 * Request that the system start watching for the calling process to exceed a pss 3619 * size as given here. Once called, the system will look for any occasions where it 3620 * sees the associated process with a larger pss size and, when this happens, automatically 3621 * pull a heap dump from it and allow the user to share the data. Note that this request 3622 * continues running even if the process is killed and restarted. To remove the watch, 3623 * use {@link #clearWatchHeapLimit()}. 3624 * 3625 * <p>This API only work if the calling process has been marked as 3626 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3627 * (userdebug or eng) build.</p> 3628 * 3629 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3630 * handle heap limit reports themselves.</p> 3631 * 3632 * @param pssSize The size in bytes to set the limit at. 3633 */ 3634 public void setWatchHeapLimit(long pssSize) { 3635 try { 3636 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3637 mContext.getPackageName()); 3638 } catch (RemoteException e) { 3639 throw e.rethrowFromSystemServer(); 3640 } 3641 } 3642 3643 /** 3644 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3645 * If your package has an activity handling this action, it will be launched with the 3646 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3647 * match the activty must support this action and a MIME type of "*/*". 3648 */ 3649 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3650 3651 /** 3652 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3653 */ 3654 public void clearWatchHeapLimit() { 3655 try { 3656 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3657 } catch (RemoteException e) { 3658 throw e.rethrowFromSystemServer(); 3659 } 3660 } 3661 3662 /** 3663 * @hide 3664 */ 3665 public void startLockTaskMode(int taskId) { 3666 try { 3667 ActivityManagerNative.getDefault().startLockTaskModeById(taskId); 3668 } catch (RemoteException e) { 3669 throw e.rethrowFromSystemServer(); 3670 } 3671 } 3672 3673 /** 3674 * @hide 3675 */ 3676 public void stopLockTaskMode() { 3677 try { 3678 ActivityManagerNative.getDefault().stopLockTaskMode(); 3679 } catch (RemoteException e) { 3680 throw e.rethrowFromSystemServer(); 3681 } 3682 } 3683 3684 /** 3685 * Return whether currently in lock task mode. When in this mode 3686 * no new tasks can be created or switched to. 3687 * 3688 * @see Activity#startLockTask() 3689 * 3690 * @deprecated Use {@link #getLockTaskModeState} instead. 3691 */ 3692 @Deprecated 3693 public boolean isInLockTaskMode() { 3694 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3695 } 3696 3697 /** 3698 * Return the current state of task locking. The three possible outcomes 3699 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3700 * and {@link #LOCK_TASK_MODE_PINNED}. 3701 * 3702 * @see Activity#startLockTask() 3703 */ 3704 public int getLockTaskModeState() { 3705 try { 3706 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3707 } catch (RemoteException e) { 3708 throw e.rethrowFromSystemServer(); 3709 } 3710 } 3711 3712 /** 3713 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 3714 * thread can be a VR thread in a process at a time, and that thread may be subject to 3715 * restrictions on the amount of time it can run. 3716 * 3717 * To reset the VR thread for an application, a tid of 0 can be passed. 3718 * 3719 * @see android.os.Process#myTid() 3720 * @param tid tid of the VR thread 3721 */ 3722 public static void setVrThread(int tid) { 3723 try { 3724 ActivityManagerNative.getDefault().setVrThread(tid); 3725 } catch (RemoteException e) { 3726 // pass 3727 } 3728 } 3729 3730 /** 3731 * The AppTask allows you to manage your own application's tasks. 3732 * See {@link android.app.ActivityManager#getAppTasks()} 3733 */ 3734 public static class AppTask { 3735 private IAppTask mAppTaskImpl; 3736 3737 /** @hide */ 3738 public AppTask(IAppTask task) { 3739 mAppTaskImpl = task; 3740 } 3741 3742 /** 3743 * Finishes all activities in this task and removes it from the recent tasks list. 3744 */ 3745 public void finishAndRemoveTask() { 3746 try { 3747 mAppTaskImpl.finishAndRemoveTask(); 3748 } catch (RemoteException e) { 3749 throw e.rethrowFromSystemServer(); 3750 } 3751 } 3752 3753 /** 3754 * Get the RecentTaskInfo associated with this task. 3755 * 3756 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3757 */ 3758 public RecentTaskInfo getTaskInfo() { 3759 try { 3760 return mAppTaskImpl.getTaskInfo(); 3761 } catch (RemoteException e) { 3762 throw e.rethrowFromSystemServer(); 3763 } 3764 } 3765 3766 /** 3767 * Bring this task to the foreground. If it contains activities, they will be 3768 * brought to the foreground with it and their instances re-created if needed. 3769 * If it doesn't contain activities, the root activity of the task will be 3770 * re-launched. 3771 */ 3772 public void moveToFront() { 3773 try { 3774 mAppTaskImpl.moveToFront(); 3775 } catch (RemoteException e) { 3776 throw e.rethrowFromSystemServer(); 3777 } 3778 } 3779 3780 /** 3781 * Start an activity in this task. Brings the task to the foreground. If this task 3782 * is not currently active (that is, its id < 0), then a new activity for the given 3783 * Intent will be launched as the root of the task and the task brought to the 3784 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3785 * an activity to launch in a new task, then a new activity for the given Intent will 3786 * be launched on top of the task and the task brought to the foreground. If this 3787 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3788 * or would otherwise be launched in to a new task, then the activity not launched but 3789 * this task be brought to the foreground and a new intent delivered to the top 3790 * activity if appropriate. 3791 * 3792 * <p>In other words, you generally want to use an Intent here that does not specify 3793 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3794 * and let the system do the right thing.</p> 3795 * 3796 * @param intent The Intent describing the new activity to be launched on the task. 3797 * @param options Optional launch options. 3798 * 3799 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3800 */ 3801 public void startActivity(Context context, Intent intent, Bundle options) { 3802 ActivityThread thread = ActivityThread.currentActivityThread(); 3803 thread.getInstrumentation().execStartActivityFromAppTask(context, 3804 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3805 } 3806 3807 /** 3808 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3809 * Intent of this AppTask. 3810 * 3811 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3812 * be set; otherwise, it will be cleared. 3813 */ 3814 public void setExcludeFromRecents(boolean exclude) { 3815 try { 3816 mAppTaskImpl.setExcludeFromRecents(exclude); 3817 } catch (RemoteException e) { 3818 throw e.rethrowFromSystemServer(); 3819 } 3820 } 3821 } 3822} 3823