ActivityManager.java revision 5136249a7147fb205e1b861c1d42a7d1f13b73cc
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.TransferPipe; 36import com.android.internal.util.FastPrintWriter; 37 38import android.content.ComponentName; 39import android.content.Context; 40import android.content.Intent; 41import android.content.UriPermission; 42import android.content.pm.ApplicationInfo; 43import android.content.pm.ConfigurationInfo; 44import android.content.pm.IPackageDataObserver; 45import android.content.pm.PackageManager; 46import android.content.pm.ParceledListSlice; 47import android.content.pm.UserInfo; 48import android.content.res.Resources; 49import android.graphics.Bitmap; 50import android.graphics.Color; 51import android.graphics.Rect; 52import android.os.Bundle; 53import android.os.Debug; 54import android.os.Handler; 55import android.os.Parcel; 56import android.os.Parcelable; 57import android.os.Process; 58import android.os.RemoteException; 59import android.os.ServiceManager; 60import android.os.SystemProperties; 61import android.os.UserHandle; 62import android.text.TextUtils; 63import android.util.DisplayMetrics; 64import android.util.Size; 65 66import org.xmlpull.v1.XmlSerializer; 67 68import java.io.FileDescriptor; 69import java.io.FileOutputStream; 70import java.io.IOException; 71import java.io.PrintWriter; 72import java.lang.annotation.Retention; 73import java.lang.annotation.RetentionPolicy; 74import java.util.ArrayList; 75import java.util.List; 76 77/** 78 * Interact with the overall activities running in the system. 79 */ 80public class ActivityManager { 81 private static String TAG = "ActivityManager"; 82 83 private static int gMaxRecentTasks = -1; 84 85 private final Context mContext; 86 private final Handler mHandler; 87 88 /** 89 * Defines acceptable types of bugreports. 90 * @hide 91 */ 92 @Retention(RetentionPolicy.SOURCE) 93 @IntDef({ 94 BUGREPORT_OPTION_FULL, 95 BUGREPORT_OPTION_INTERACTIVE, 96 BUGREPORT_OPTION_REMOTE, 97 BUGREPORT_OPTION_WEAR 98 }) 99 public @interface BugreportMode {} 100 /** 101 * Takes a bugreport without user interference (and hence causing less 102 * interference to the system), but includes all sections. 103 * @hide 104 */ 105 public static final int BUGREPORT_OPTION_FULL = 0; 106 /** 107 * Allows user to monitor progress and enter additional data; might not include all 108 * sections. 109 * @hide 110 */ 111 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 112 /** 113 * Takes a bugreport requested remotely by administrator of the Device Owner app, 114 * not the device's user. 115 * @hide 116 */ 117 public static final int BUGREPORT_OPTION_REMOTE = 2; 118 /** 119 * Takes a bugreport on a wearable device. 120 * @hide 121 */ 122 public static final int BUGREPORT_OPTION_WEAR = 3; 123 124 /** 125 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 126 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 127 * uninstalled in lieu of the declaring one. The package named here must be 128 * signed with the same certificate as the one declaring the {@code <meta-data>}. 129 */ 130 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 131 132 /** 133 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 134 * @hide 135 */ 136 public static final int START_VOICE_HIDDEN_SESSION = -10; 137 138 /** 139 * Result for IActivityManager.startVoiceActivity: active session does not match 140 * the requesting token. 141 * @hide 142 */ 143 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 144 145 /** 146 * Result for IActivityManager.startActivity: trying to start a background user 147 * activity that shouldn't be displayed for all users. 148 * @hide 149 */ 150 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 151 152 /** 153 * Result for IActivityManager.startActivity: trying to start an activity under voice 154 * control when that activity does not support the VOICE category. 155 * @hide 156 */ 157 public static final int START_NOT_VOICE_COMPATIBLE = -7; 158 159 /** 160 * Result for IActivityManager.startActivity: an error where the 161 * start had to be canceled. 162 * @hide 163 */ 164 public static final int START_CANCELED = -6; 165 166 /** 167 * Result for IActivityManager.startActivity: an error where the 168 * thing being started is not an activity. 169 * @hide 170 */ 171 public static final int START_NOT_ACTIVITY = -5; 172 173 /** 174 * Result for IActivityManager.startActivity: an error where the 175 * caller does not have permission to start the activity. 176 * @hide 177 */ 178 public static final int START_PERMISSION_DENIED = -4; 179 180 /** 181 * Result for IActivityManager.startActivity: an error where the 182 * caller has requested both to forward a result and to receive 183 * a result. 184 * @hide 185 */ 186 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 187 188 /** 189 * Result for IActivityManager.startActivity: an error where the 190 * requested class is not found. 191 * @hide 192 */ 193 public static final int START_CLASS_NOT_FOUND = -2; 194 195 /** 196 * Result for IActivityManager.startActivity: an error where the 197 * given Intent could not be resolved to an activity. 198 * @hide 199 */ 200 public static final int START_INTENT_NOT_RESOLVED = -1; 201 202 /** 203 * Result for IActivityManaqer.startActivity: the activity was started 204 * successfully as normal. 205 * @hide 206 */ 207 public static final int START_SUCCESS = 0; 208 209 /** 210 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 211 * be executed if it is the recipient, and that is indeed the case. 212 * @hide 213 */ 214 public static final int START_RETURN_INTENT_TO_CALLER = 1; 215 216 /** 217 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 218 * a task was simply brought to the foreground. 219 * @hide 220 */ 221 public static final int START_TASK_TO_FRONT = 2; 222 223 /** 224 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 225 * the given Intent was given to the existing top activity. 226 * @hide 227 */ 228 public static final int START_DELIVERED_TO_TOP = 3; 229 230 /** 231 * Result for IActivityManaqer.startActivity: request was canceled because 232 * app switches are temporarily canceled to ensure the user's last request 233 * (such as pressing home) is performed. 234 * @hide 235 */ 236 public static final int START_SWITCHES_CANCELED = 4; 237 238 /** 239 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 240 * while in Lock Task Mode. 241 * @hide 242 */ 243 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 244 245 /** 246 * Flag for IActivityManaqer.startActivity: do special start mode where 247 * a new activity is launched only if it is needed. 248 * @hide 249 */ 250 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 251 252 /** 253 * Flag for IActivityManaqer.startActivity: launch the app for 254 * debugging. 255 * @hide 256 */ 257 public static final int START_FLAG_DEBUG = 1<<1; 258 259 /** 260 * Flag for IActivityManaqer.startActivity: launch the app for 261 * allocation tracking. 262 * @hide 263 */ 264 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 265 266 /** 267 * Flag for IActivityManaqer.startActivity: launch the app with 268 * native debugging support. 269 * @hide 270 */ 271 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 272 273 /** 274 * Result for IActivityManaqer.broadcastIntent: success! 275 * @hide 276 */ 277 public static final int BROADCAST_SUCCESS = 0; 278 279 /** 280 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 281 * a sticky intent without appropriate permission. 282 * @hide 283 */ 284 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 285 286 /** 287 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 288 * to a stopped user. Fail. 289 * @hide 290 */ 291 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 292 293 /** 294 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 295 * for a sendBroadcast operation. 296 * @hide 297 */ 298 public static final int INTENT_SENDER_BROADCAST = 1; 299 300 /** 301 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 302 * for a startActivity operation. 303 * @hide 304 */ 305 public static final int INTENT_SENDER_ACTIVITY = 2; 306 307 /** 308 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 309 * for an activity result operation. 310 * @hide 311 */ 312 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 313 314 /** 315 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 316 * for a startService operation. 317 * @hide 318 */ 319 public static final int INTENT_SENDER_SERVICE = 4; 320 321 /** @hide User operation call: success! */ 322 public static final int USER_OP_SUCCESS = 0; 323 324 /** @hide User operation call: given user id is not known. */ 325 public static final int USER_OP_UNKNOWN_USER = -1; 326 327 /** @hide User operation call: given user id is the current user, can't be stopped. */ 328 public static final int USER_OP_IS_CURRENT = -2; 329 330 /** @hide User operation call: system user can't be stopped. */ 331 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 332 333 /** @hide User operation call: one of related users cannot be stopped. */ 334 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 335 336 /** @hide Process does not exist. */ 337 public static final int PROCESS_STATE_NONEXISTENT = -1; 338 339 /** @hide Process is a persistent system process. */ 340 public static final int PROCESS_STATE_PERSISTENT = 0; 341 342 /** @hide Process is a persistent system process and is doing UI. */ 343 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 344 345 /** @hide Process is hosting the current top activities. Note that this covers 346 * all activities that are visible to the user. */ 347 public static final int PROCESS_STATE_TOP = 2; 348 349 /** @hide Process is hosting a foreground service due to a system binding. */ 350 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 351 352 /** @hide Process is hosting a foreground service. */ 353 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 354 355 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 356 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 357 358 /** @hide Process is important to the user, and something they are aware of. */ 359 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 360 361 /** @hide Process is important to the user, but not something they are aware of. */ 362 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 363 364 /** @hide Process is in the background running a backup/restore operation. */ 365 public static final int PROCESS_STATE_BACKUP = 8; 366 367 /** @hide Process is in the background, but it can't restore its state so we want 368 * to try to avoid killing it. */ 369 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 370 371 /** @hide Process is in the background running a service. Unlike oom_adj, this level 372 * is used for both the normal running in background state and the executing 373 * operations state. */ 374 public static final int PROCESS_STATE_SERVICE = 10; 375 376 /** @hide Process is in the background running a receiver. Note that from the 377 * perspective of oom_adj receivers run at a higher foreground level, but for our 378 * prioritization here that is not necessary and putting them below services means 379 * many fewer changes in some process states as they receive broadcasts. */ 380 public static final int PROCESS_STATE_RECEIVER = 11; 381 382 /** @hide Process is in the background but hosts the home activity. */ 383 public static final int PROCESS_STATE_HOME = 12; 384 385 /** @hide Process is in the background but hosts the last shown activity. */ 386 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 387 388 /** @hide Process is being cached for later use and contains activities. */ 389 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 390 391 /** @hide Process is being cached for later use and is a client of another cached 392 * process that contains activities. */ 393 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 394 395 /** @hide Process is being cached for later use and is empty. */ 396 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 397 398 /** @hide The lowest process state number */ 399 public static final int MIN_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 400 401 /** @hide The highest process state number */ 402 public static final int MAX_PROCESS_STATE = PROCESS_STATE_CACHED_EMPTY; 403 404 /** @hide Should this process state be considered a background state? */ 405 public static final boolean isProcStateBackground(int procState) { 406 return procState >= PROCESS_STATE_BACKUP; 407 } 408 409 /** @hide requestType for assist context: only basic information. */ 410 public static final int ASSIST_CONTEXT_BASIC = 0; 411 412 /** @hide requestType for assist context: generate full AssistStructure. */ 413 public static final int ASSIST_CONTEXT_FULL = 1; 414 415 /** @hide Flag for registerUidObserver: report changes in process state. */ 416 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 417 418 /** @hide Flag for registerUidObserver: report uid gone. */ 419 public static final int UID_OBSERVER_GONE = 1<<1; 420 421 /** @hide Flag for registerUidObserver: report uid has become idle. */ 422 public static final int UID_OBSERVER_IDLE = 1<<2; 423 424 /** @hide Flag for registerUidObserver: report uid has become active. */ 425 public static final int UID_OBSERVER_ACTIVE = 1<<3; 426 427 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 428 public static final int APP_START_MODE_NORMAL = 0; 429 430 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 431 public static final int APP_START_MODE_DELAYED = 1; 432 433 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 434 * launches. */ 435 public static final int APP_START_MODE_DISABLED = 2; 436 437 /** 438 * Lock task mode is not active. 439 */ 440 public static final int LOCK_TASK_MODE_NONE = 0; 441 442 /** 443 * Full lock task mode is active. 444 */ 445 public static final int LOCK_TASK_MODE_LOCKED = 1; 446 447 /** 448 * App pinning mode is active. 449 */ 450 public static final int LOCK_TASK_MODE_PINNED = 2; 451 452 Point mAppTaskThumbnailSize; 453 454 /*package*/ ActivityManager(Context context, Handler handler) { 455 mContext = context; 456 mHandler = handler; 457 } 458 459 /** 460 * Screen compatibility mode: the application most always run in 461 * compatibility mode. 462 * @hide 463 */ 464 public static final int COMPAT_MODE_ALWAYS = -1; 465 466 /** 467 * Screen compatibility mode: the application can never run in 468 * compatibility mode. 469 * @hide 470 */ 471 public static final int COMPAT_MODE_NEVER = -2; 472 473 /** 474 * Screen compatibility mode: unknown. 475 * @hide 476 */ 477 public static final int COMPAT_MODE_UNKNOWN = -3; 478 479 /** 480 * Screen compatibility mode: the application currently has compatibility 481 * mode disabled. 482 * @hide 483 */ 484 public static final int COMPAT_MODE_DISABLED = 0; 485 486 /** 487 * Screen compatibility mode: the application currently has compatibility 488 * mode enabled. 489 * @hide 490 */ 491 public static final int COMPAT_MODE_ENABLED = 1; 492 493 /** 494 * Screen compatibility mode: request to toggle the application's 495 * compatibility mode. 496 * @hide 497 */ 498 public static final int COMPAT_MODE_TOGGLE = 2; 499 500 /** @hide */ 501 public static class StackId { 502 /** Invalid stack ID. */ 503 public static final int INVALID_STACK_ID = -1; 504 505 /** First static stack ID. */ 506 public static final int FIRST_STATIC_STACK_ID = 0; 507 508 /** Home activity stack ID. */ 509 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 510 511 /** ID of stack where fullscreen activities are normally launched into. */ 512 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 513 514 /** ID of stack where freeform/resized activities are normally launched into. */ 515 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 516 517 /** ID of stack that occupies a dedicated region of the screen. */ 518 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 519 520 /** ID of stack that always on top (always visible) when it exist. */ 521 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 522 523 /** Last static stack stack ID. */ 524 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 525 526 /** Start of ID range used by stacks that are created dynamically. */ 527 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 528 529 public static boolean isStaticStack(int stackId) { 530 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 531 } 532 533 /** 534 * Returns true if the activities contained in the input stack display a shadow around 535 * their border. 536 */ 537 public static boolean hasWindowShadow(int stackId) { 538 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 539 } 540 541 /** 542 * Returns true if the activities contained in the input stack display a decor view. 543 */ 544 public static boolean hasWindowDecor(int stackId) { 545 return stackId == FREEFORM_WORKSPACE_STACK_ID; 546 } 547 548 /** 549 * Returns true if the tasks contained in the stack can be resized independently of the 550 * stack. 551 */ 552 public static boolean isTaskResizeAllowed(int stackId) { 553 return stackId == FREEFORM_WORKSPACE_STACK_ID; 554 } 555 556 /** Returns true if the task bounds should persist across power cycles. */ 557 public static boolean persistTaskBounds(int stackId) { 558 return stackId == FREEFORM_WORKSPACE_STACK_ID; 559 } 560 561 /** 562 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 563 */ 564 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 565 return stackId == PINNED_STACK_ID; 566 } 567 568 /** 569 * Returns true if we try to maintain focus in the current stack when the top activity 570 * finishes. 571 */ 572 public static boolean keepFocusInStackIfPossible(int stackId) { 573 return stackId == FREEFORM_WORKSPACE_STACK_ID 574 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 575 } 576 577 /** 578 * Returns true if Stack size is affected by the docked stack changing size. 579 */ 580 public static boolean isResizeableByDockedStack(int stackId) { 581 return isStaticStack(stackId) && 582 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 583 } 584 585 /** 586 * Returns true if the size of tasks in the input stack are affected by the docked stack 587 * changing size. 588 */ 589 public static boolean isTaskResizeableByDockedStack(int stackId) { 590 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 591 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 592 } 593 594 /** 595 * Returns true if the windows of tasks being moved to the target stack from the source 596 * stack should be replaced, meaning that window manager will keep the old window around 597 * until the new is ready. 598 */ 599 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 600 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 601 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 602 } 603 604 /** 605 * Return whether a stackId is a stack containing floating windows. Floating windows 606 * are laid out differently as they are allowed to extend past the display bounds 607 * without overscan insets. 608 */ 609 public static boolean tasksAreFloating(int stackId) { 610 return stackId == FREEFORM_WORKSPACE_STACK_ID 611 || stackId == PINNED_STACK_ID; 612 } 613 614 /** 615 * Returns true if animation specs should be constructed for app transition that moves 616 * the task to the specified stack. 617 */ 618 public static boolean useAnimationSpecForAppTransition(int stackId) { 619 620 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 621 // reboots. 622 return stackId == FREEFORM_WORKSPACE_STACK_ID 623 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 624 || stackId == INVALID_STACK_ID; 625 } 626 627 /** Returns true if the windows in the stack can receive input keys. */ 628 public static boolean canReceiveKeys(int stackId) { 629 return stackId != PINNED_STACK_ID; 630 } 631 632 /** 633 * Returns true if the stack can be visible above lockscreen. 634 */ 635 public static boolean isAllowedOverLockscreen(int stackId) { 636 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 637 } 638 639 public static boolean isAlwaysOnTop(int stackId) { 640 return stackId == PINNED_STACK_ID; 641 } 642 643 /** 644 * Returns true if the top task in the task is allowed to return home when finished and 645 * there are other tasks in the stack. 646 */ 647 public static boolean allowTopTaskToReturnHome(int stackId) { 648 return stackId != PINNED_STACK_ID; 649 } 650 651 /** 652 * Returns true if the stack should be resized to match the bounds specified by 653 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 654 */ 655 public static boolean resizeStackWithLaunchBounds(int stackId) { 656 return stackId == PINNED_STACK_ID; 657 } 658 659 /** 660 * Returns true if any visible windows belonging to apps in this stack should be kept on 661 * screen when the app is killed due to something like the low memory killer. 662 */ 663 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 664 return stackId != PINNED_STACK_ID; 665 } 666 667 /** 668 * Returns true if the backdrop on the client side should match the frame of the window. 669 * Returns false, if the backdrop should be fullscreen. 670 */ 671 public static boolean useWindowFrameForBackdrop(int stackId) { 672 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 673 } 674 675 /** 676 * Returns true if a window from the specified stack with {@param stackId} are normally 677 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 678 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 679 * etc. 680 */ 681 public static boolean normallyFullscreenWindows(int stackId) { 682 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 683 && stackId != DOCKED_STACK_ID; 684 } 685 686 /** 687 * Returns true if the input stack id should only be present on a device that supports 688 * multi-window mode. 689 * @see android.app.ActivityManager#supportsMultiWindow 690 */ 691 public static boolean isMultiWindowStack(int stackId) { 692 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 693 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 694 } 695 696 /** 697 * Returns true if activities contained in this stack can request visible behind by 698 * calling {@link Activity#requestVisibleBehind}. 699 */ 700 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 701 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 702 } 703 704 /** 705 * Returns true if this stack may be scaled without resizing, 706 * and windows within may need to be configured as such. 707 */ 708 public static boolean windowsAreScaleable(int stackId) { 709 return stackId == PINNED_STACK_ID; 710 } 711 712 /** 713 * Returns true if windows in this stack should be given move animations 714 * by default. 715 */ 716 public static boolean hasMovementAnimations(int stackId) { 717 return stackId != PINNED_STACK_ID; 718 } 719 720 /** Returns true if the input stack and its content can affect the device orientation. */ 721 public static boolean canSpecifyOrientation(int stackId) { 722 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 723 } 724 } 725 726 /** 727 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 728 * specifies the position of the created docked stack at the top half of the screen if 729 * in portrait mode or at the left half of the screen if in landscape mode. 730 * @hide 731 */ 732 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 733 734 /** 735 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 736 * specifies the position of the created docked stack at the bottom half of the screen if 737 * in portrait mode or at the right half of the screen if in landscape mode. 738 * @hide 739 */ 740 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 741 742 /** 743 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 744 * that the resize doesn't need to preserve the window, and can be skipped if bounds 745 * is unchanged. This mode is used by window manager in most cases. 746 * @hide 747 */ 748 public static final int RESIZE_MODE_SYSTEM = 0; 749 750 /** 751 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 752 * that the resize should preserve the window if possible. 753 * @hide 754 */ 755 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 756 757 /** 758 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 759 * that the resize should be performed even if the bounds appears unchanged. 760 * @hide 761 */ 762 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 763 764 /** 765 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 766 * manager during a screen rotation. 767 * @hide 768 */ 769 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 770 771 /** 772 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 773 * resize is due to a drag action. 774 * @hide 775 */ 776 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 777 778 /** 779 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 780 * that the resize should preserve the window if possible, and should not be skipped 781 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 782 * is ending. 783 * @hide 784 */ 785 public static final int RESIZE_MODE_USER_FORCED = 786 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 787 788 /** @hide */ 789 public int getFrontActivityScreenCompatMode() { 790 try { 791 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 792 } catch (RemoteException e) { 793 throw e.rethrowFromSystemServer(); 794 } 795 } 796 797 /** @hide */ 798 public void setFrontActivityScreenCompatMode(int mode) { 799 try { 800 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 801 } catch (RemoteException e) { 802 throw e.rethrowFromSystemServer(); 803 } 804 } 805 806 /** @hide */ 807 public int getPackageScreenCompatMode(String packageName) { 808 try { 809 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 810 } catch (RemoteException e) { 811 throw e.rethrowFromSystemServer(); 812 } 813 } 814 815 /** @hide */ 816 public void setPackageScreenCompatMode(String packageName, int mode) { 817 try { 818 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 819 } catch (RemoteException e) { 820 throw e.rethrowFromSystemServer(); 821 } 822 } 823 824 /** @hide */ 825 public boolean getPackageAskScreenCompat(String packageName) { 826 try { 827 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 828 } catch (RemoteException e) { 829 throw e.rethrowFromSystemServer(); 830 } 831 } 832 833 /** @hide */ 834 public void setPackageAskScreenCompat(String packageName, boolean ask) { 835 try { 836 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 837 } catch (RemoteException e) { 838 throw e.rethrowFromSystemServer(); 839 } 840 } 841 842 /** 843 * Return the approximate per-application memory class of the current 844 * device. This gives you an idea of how hard a memory limit you should 845 * impose on your application to let the overall system work best. The 846 * returned value is in megabytes; the baseline Android memory class is 847 * 16 (which happens to be the Java heap limit of those devices); some 848 * device with more memory may return 24 or even higher numbers. 849 */ 850 public int getMemoryClass() { 851 return staticGetMemoryClass(); 852 } 853 854 /** @hide */ 855 static public int staticGetMemoryClass() { 856 // Really brain dead right now -- just take this from the configured 857 // vm heap size, and assume it is in megabytes and thus ends with "m". 858 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 859 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 860 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 861 } 862 return staticGetLargeMemoryClass(); 863 } 864 865 /** 866 * Return the approximate per-application memory class of the current 867 * device when an application is running with a large heap. This is the 868 * space available for memory-intensive applications; most applications 869 * should not need this amount of memory, and should instead stay with the 870 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 871 * This may be the same size as {@link #getMemoryClass()} on memory 872 * constrained devices, or it may be significantly larger on devices with 873 * a large amount of available RAM. 874 * 875 * <p>The is the size of the application's Dalvik heap if it has 876 * specified <code>android:largeHeap="true"</code> in its manifest. 877 */ 878 public int getLargeMemoryClass() { 879 return staticGetLargeMemoryClass(); 880 } 881 882 /** @hide */ 883 static public int staticGetLargeMemoryClass() { 884 // Really brain dead right now -- just take this from the configured 885 // vm heap size, and assume it is in megabytes and thus ends with "m". 886 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 887 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 888 } 889 890 /** 891 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 892 * is ultimately up to the device configuration, but currently it generally means 893 * something in the class of a 512MB device with about a 800x480 or less screen. 894 * This is mostly intended to be used by apps to determine whether they should turn 895 * off certain features that require more RAM. 896 */ 897 public boolean isLowRamDevice() { 898 return isLowRamDeviceStatic(); 899 } 900 901 /** @hide */ 902 public static boolean isLowRamDeviceStatic() { 903 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 904 } 905 906 /** 907 * Used by persistent processes to determine if they are running on a 908 * higher-end device so should be okay using hardware drawing acceleration 909 * (which tends to consume a lot more RAM). 910 * @hide 911 */ 912 static public boolean isHighEndGfx() { 913 return !isLowRamDeviceStatic() && 914 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 915 } 916 917 /** 918 * Return the maximum number of recents entries that we will maintain and show. 919 * @hide 920 */ 921 static public int getMaxRecentTasksStatic() { 922 if (gMaxRecentTasks < 0) { 923 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 924 } 925 return gMaxRecentTasks; 926 } 927 928 /** 929 * Return the default limit on the number of recents that an app can make. 930 * @hide 931 */ 932 static public int getDefaultAppRecentsLimitStatic() { 933 return getMaxRecentTasksStatic() / 6; 934 } 935 936 /** 937 * Return the maximum limit on the number of recents that an app can make. 938 * @hide 939 */ 940 static public int getMaxAppRecentsLimitStatic() { 941 return getMaxRecentTasksStatic() / 2; 942 } 943 944 /** 945 * Returns true if the system supports at least one form of multi-window. 946 * E.g. freeform, split-screen, picture-in-picture. 947 * @hide 948 */ 949 static public boolean supportsMultiWindow() { 950 return !isLowRamDeviceStatic() 951 && Resources.getSystem().getBoolean( 952 com.android.internal.R.bool.config_supportsMultiWindow); 953 } 954 955 /** 956 * Information you can set and retrieve about the current activity within the recent task list. 957 */ 958 public static class TaskDescription implements Parcelable { 959 /** @hide */ 960 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 961 private static final String ATTR_TASKDESCRIPTIONLABEL = 962 ATTR_TASKDESCRIPTION_PREFIX + "label"; 963 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 964 ATTR_TASKDESCRIPTION_PREFIX + "color"; 965 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 966 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 967 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 968 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 969 970 private String mLabel; 971 private Bitmap mIcon; 972 private String mIconFilename; 973 private int mColorPrimary; 974 private int mColorBackground; 975 976 /** 977 * Creates the TaskDescription to the specified values. 978 * 979 * @param label A label and description of the current state of this task. 980 * @param icon An icon that represents the current state of this task. 981 * @param colorPrimary A color to override the theme's primary color. This color must be 982 * opaque. 983 */ 984 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 985 this(label, icon, null, colorPrimary, 0); 986 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 987 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 988 } 989 } 990 991 /** 992 * Creates the TaskDescription to the specified values. 993 * 994 * @param label A label and description of the current state of this activity. 995 * @param icon An icon that represents the current state of this activity. 996 */ 997 public TaskDescription(String label, Bitmap icon) { 998 this(label, icon, null, 0, 0); 999 } 1000 1001 /** 1002 * Creates the TaskDescription to the specified values. 1003 * 1004 * @param label A label and description of the current state of this activity. 1005 */ 1006 public TaskDescription(String label) { 1007 this(label, null, null, 0, 0); 1008 } 1009 1010 /** 1011 * Creates an empty TaskDescription. 1012 */ 1013 public TaskDescription() { 1014 this(null, null, null, 0, 0); 1015 } 1016 1017 /** @hide */ 1018 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1019 int colorBackground) { 1020 mLabel = label; 1021 mIcon = icon; 1022 mIconFilename = iconFilename; 1023 mColorPrimary = colorPrimary; 1024 mColorBackground = colorBackground; 1025 } 1026 1027 /** 1028 * Creates a copy of another TaskDescription. 1029 */ 1030 public TaskDescription(TaskDescription td) { 1031 copyFrom(td); 1032 } 1033 1034 /** 1035 * Copies this the values from another TaskDescription. 1036 * @hide 1037 */ 1038 public void copyFrom(TaskDescription other) { 1039 mLabel = other.mLabel; 1040 mIcon = other.mIcon; 1041 mIconFilename = other.mIconFilename; 1042 mColorPrimary = other.mColorPrimary; 1043 mColorBackground = other.mColorBackground; 1044 } 1045 1046 private TaskDescription(Parcel source) { 1047 readFromParcel(source); 1048 } 1049 1050 /** 1051 * Sets the label for this task description. 1052 * @hide 1053 */ 1054 public void setLabel(String label) { 1055 mLabel = label; 1056 } 1057 1058 /** 1059 * Sets the primary color for this task description. 1060 * @hide 1061 */ 1062 public void setPrimaryColor(int primaryColor) { 1063 // Ensure that the given color is valid 1064 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1065 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1066 } 1067 mColorPrimary = primaryColor; 1068 } 1069 1070 /** 1071 * Sets the background color for this task description. 1072 * @hide 1073 */ 1074 public void setBackgroundColor(int backgroundColor) { 1075 // Ensure that the given color is valid 1076 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1077 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1078 } 1079 mColorBackground = backgroundColor; 1080 } 1081 1082 /** 1083 * Sets the icon for this task description. 1084 * @hide 1085 */ 1086 public void setIcon(Bitmap icon) { 1087 mIcon = icon; 1088 } 1089 1090 /** 1091 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1092 * bitmap. 1093 * @hide 1094 */ 1095 public void setIconFilename(String iconFilename) { 1096 mIconFilename = iconFilename; 1097 mIcon = null; 1098 } 1099 1100 /** 1101 * @return The label and description of the current state of this task. 1102 */ 1103 public String getLabel() { 1104 return mLabel; 1105 } 1106 1107 /** 1108 * @return The icon that represents the current state of this task. 1109 */ 1110 public Bitmap getIcon() { 1111 if (mIcon != null) { 1112 return mIcon; 1113 } 1114 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1115 } 1116 1117 /** @hide */ 1118 public String getIconFilename() { 1119 return mIconFilename; 1120 } 1121 1122 /** @hide */ 1123 public Bitmap getInMemoryIcon() { 1124 return mIcon; 1125 } 1126 1127 /** @hide */ 1128 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1129 if (iconFilename != null) { 1130 try { 1131 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1132 userId); 1133 } catch (RemoteException e) { 1134 throw e.rethrowFromSystemServer(); 1135 } 1136 } 1137 return null; 1138 } 1139 1140 /** 1141 * @return The color override on the theme's primary color. 1142 */ 1143 public int getPrimaryColor() { 1144 return mColorPrimary; 1145 } 1146 1147 /** 1148 * @return The background color. 1149 * @hide 1150 */ 1151 public int getBackgroundColor() { 1152 return mColorBackground; 1153 } 1154 1155 /** @hide */ 1156 public void saveToXml(XmlSerializer out) throws IOException { 1157 if (mLabel != null) { 1158 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1159 } 1160 if (mColorPrimary != 0) { 1161 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1162 Integer.toHexString(mColorPrimary)); 1163 } 1164 if (mColorBackground != 0) { 1165 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1166 Integer.toHexString(mColorBackground)); 1167 } 1168 if (mIconFilename != null) { 1169 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1170 } 1171 } 1172 1173 /** @hide */ 1174 public void restoreFromXml(String attrName, String attrValue) { 1175 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1176 setLabel(attrValue); 1177 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1178 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1179 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1180 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1181 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1182 setIconFilename(attrValue); 1183 } 1184 } 1185 1186 @Override 1187 public int describeContents() { 1188 return 0; 1189 } 1190 1191 @Override 1192 public void writeToParcel(Parcel dest, int flags) { 1193 if (mLabel == null) { 1194 dest.writeInt(0); 1195 } else { 1196 dest.writeInt(1); 1197 dest.writeString(mLabel); 1198 } 1199 if (mIcon == null) { 1200 dest.writeInt(0); 1201 } else { 1202 dest.writeInt(1); 1203 mIcon.writeToParcel(dest, 0); 1204 } 1205 dest.writeInt(mColorPrimary); 1206 dest.writeInt(mColorBackground); 1207 if (mIconFilename == null) { 1208 dest.writeInt(0); 1209 } else { 1210 dest.writeInt(1); 1211 dest.writeString(mIconFilename); 1212 } 1213 } 1214 1215 public void readFromParcel(Parcel source) { 1216 mLabel = source.readInt() > 0 ? source.readString() : null; 1217 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1218 mColorPrimary = source.readInt(); 1219 mColorBackground = source.readInt(); 1220 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1221 } 1222 1223 public static final Creator<TaskDescription> CREATOR 1224 = new Creator<TaskDescription>() { 1225 public TaskDescription createFromParcel(Parcel source) { 1226 return new TaskDescription(source); 1227 } 1228 public TaskDescription[] newArray(int size) { 1229 return new TaskDescription[size]; 1230 } 1231 }; 1232 1233 @Override 1234 public String toString() { 1235 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1236 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1237 " colorBackground: " + mColorBackground; 1238 } 1239 } 1240 1241 /** 1242 * Information you can retrieve about tasks that the user has most recently 1243 * started or visited. 1244 */ 1245 public static class RecentTaskInfo implements Parcelable { 1246 /** 1247 * If this task is currently running, this is the identifier for it. 1248 * If it is not running, this will be -1. 1249 */ 1250 public int id; 1251 1252 /** 1253 * The true identifier of this task, valid even if it is not running. 1254 */ 1255 public int persistentId; 1256 1257 /** 1258 * The original Intent used to launch the task. You can use this 1259 * Intent to re-launch the task (if it is no longer running) or bring 1260 * the current task to the front. 1261 */ 1262 public Intent baseIntent; 1263 1264 /** 1265 * If this task was started from an alias, this is the actual 1266 * activity component that was initially started; the component of 1267 * the baseIntent in this case is the name of the actual activity 1268 * implementation that the alias referred to. Otherwise, this is null. 1269 */ 1270 public ComponentName origActivity; 1271 1272 /** 1273 * The actual activity component that started the task. 1274 * @hide 1275 */ 1276 @Nullable 1277 public ComponentName realActivity; 1278 1279 /** 1280 * Description of the task's last state. 1281 */ 1282 public CharSequence description; 1283 1284 /** 1285 * The id of the ActivityStack this Task was on most recently. 1286 * @hide 1287 */ 1288 public int stackId; 1289 1290 /** 1291 * The id of the user the task was running as. 1292 * @hide 1293 */ 1294 public int userId; 1295 1296 /** 1297 * The first time this task was active. 1298 * @hide 1299 */ 1300 public long firstActiveTime; 1301 1302 /** 1303 * The last time this task was active. 1304 * @hide 1305 */ 1306 public long lastActiveTime; 1307 1308 /** 1309 * The recent activity values for the highest activity in the stack to have set the values. 1310 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1311 */ 1312 public TaskDescription taskDescription; 1313 1314 /** 1315 * Task affiliation for grouping with other tasks. 1316 */ 1317 public int affiliatedTaskId; 1318 1319 /** 1320 * Task affiliation color of the source task with the affiliated task id. 1321 * 1322 * @hide 1323 */ 1324 public int affiliatedTaskColor; 1325 1326 /** 1327 * The component launched as the first activity in the task. 1328 * This can be considered the "application" of this task. 1329 */ 1330 public ComponentName baseActivity; 1331 1332 /** 1333 * The activity component at the top of the history stack of the task. 1334 * This is what the user is currently doing. 1335 */ 1336 public ComponentName topActivity; 1337 1338 /** 1339 * Number of activities in this task. 1340 */ 1341 public int numActivities; 1342 1343 /** 1344 * The bounds of the task. 1345 * @hide 1346 */ 1347 public Rect bounds; 1348 1349 /** 1350 * True if the task can go in the docked stack. 1351 * @hide 1352 */ 1353 public boolean isDockable; 1354 1355 /** 1356 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1357 * @hide 1358 */ 1359 public int resizeMode; 1360 1361 public RecentTaskInfo() { 1362 } 1363 1364 @Override 1365 public int describeContents() { 1366 return 0; 1367 } 1368 1369 @Override 1370 public void writeToParcel(Parcel dest, int flags) { 1371 dest.writeInt(id); 1372 dest.writeInt(persistentId); 1373 if (baseIntent != null) { 1374 dest.writeInt(1); 1375 baseIntent.writeToParcel(dest, 0); 1376 } else { 1377 dest.writeInt(0); 1378 } 1379 ComponentName.writeToParcel(origActivity, dest); 1380 ComponentName.writeToParcel(realActivity, dest); 1381 TextUtils.writeToParcel(description, dest, 1382 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1383 if (taskDescription != null) { 1384 dest.writeInt(1); 1385 taskDescription.writeToParcel(dest, 0); 1386 } else { 1387 dest.writeInt(0); 1388 } 1389 dest.writeInt(stackId); 1390 dest.writeInt(userId); 1391 dest.writeLong(firstActiveTime); 1392 dest.writeLong(lastActiveTime); 1393 dest.writeInt(affiliatedTaskId); 1394 dest.writeInt(affiliatedTaskColor); 1395 ComponentName.writeToParcel(baseActivity, dest); 1396 ComponentName.writeToParcel(topActivity, dest); 1397 dest.writeInt(numActivities); 1398 if (bounds != null) { 1399 dest.writeInt(1); 1400 bounds.writeToParcel(dest, 0); 1401 } else { 1402 dest.writeInt(0); 1403 } 1404 dest.writeInt(isDockable ? 1 : 0); 1405 dest.writeInt(resizeMode); 1406 } 1407 1408 public void readFromParcel(Parcel source) { 1409 id = source.readInt(); 1410 persistentId = source.readInt(); 1411 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1412 origActivity = ComponentName.readFromParcel(source); 1413 realActivity = ComponentName.readFromParcel(source); 1414 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1415 taskDescription = source.readInt() > 0 ? 1416 TaskDescription.CREATOR.createFromParcel(source) : null; 1417 stackId = source.readInt(); 1418 userId = source.readInt(); 1419 firstActiveTime = source.readLong(); 1420 lastActiveTime = source.readLong(); 1421 affiliatedTaskId = source.readInt(); 1422 affiliatedTaskColor = source.readInt(); 1423 baseActivity = ComponentName.readFromParcel(source); 1424 topActivity = ComponentName.readFromParcel(source); 1425 numActivities = source.readInt(); 1426 bounds = source.readInt() > 0 ? 1427 Rect.CREATOR.createFromParcel(source) : null; 1428 isDockable = source.readInt() == 1; 1429 resizeMode = source.readInt(); 1430 } 1431 1432 public static final Creator<RecentTaskInfo> CREATOR 1433 = new Creator<RecentTaskInfo>() { 1434 public RecentTaskInfo createFromParcel(Parcel source) { 1435 return new RecentTaskInfo(source); 1436 } 1437 public RecentTaskInfo[] newArray(int size) { 1438 return new RecentTaskInfo[size]; 1439 } 1440 }; 1441 1442 private RecentTaskInfo(Parcel source) { 1443 readFromParcel(source); 1444 } 1445 } 1446 1447 /** 1448 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1449 * that have set their 1450 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1451 */ 1452 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1453 1454 /** 1455 * Provides a list that does not contain any 1456 * recent tasks that currently are not available to the user. 1457 */ 1458 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1459 1460 /** 1461 * Provides a list that contains recent tasks for all 1462 * profiles of a user. 1463 * @hide 1464 */ 1465 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1466 1467 /** 1468 * Ignores all tasks that are on the home stack. 1469 * @hide 1470 */ 1471 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1472 1473 /** 1474 * Ignores the top task in the docked stack. 1475 * @hide 1476 */ 1477 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1478 1479 /** 1480 * Ignores all tasks that are on the pinned stack. 1481 * @hide 1482 */ 1483 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1484 1485 /** 1486 * <p></p>Return a list of the tasks that the user has recently launched, with 1487 * the most recent being first and older ones after in order. 1488 * 1489 * <p><b>Note: this method is only intended for debugging and presenting 1490 * task management user interfaces</b>. This should never be used for 1491 * core logic in an application, such as deciding between different 1492 * behaviors based on the information found here. Such uses are 1493 * <em>not</em> supported, and will likely break in the future. For 1494 * example, if multiple applications can be actively running at the 1495 * same time, assumptions made about the meaning of the data here for 1496 * purposes of control flow will be incorrect.</p> 1497 * 1498 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1499 * no longer available to third party applications: the introduction of 1500 * document-centric recents means 1501 * it can leak personal information to the caller. For backwards compatibility, 1502 * it will still return a small subset of its data: at least the caller's 1503 * own tasks (though see {@link #getAppTasks()} for the correct supported 1504 * way to retrieve that information), and possibly some other tasks 1505 * such as home that are known to not be sensitive. 1506 * 1507 * @param maxNum The maximum number of entries to return in the list. The 1508 * actual number returned may be smaller, depending on how many tasks the 1509 * user has started and the maximum number the system can remember. 1510 * @param flags Information about what to return. May be any combination 1511 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1512 * 1513 * @return Returns a list of RecentTaskInfo records describing each of 1514 * the recent tasks. 1515 */ 1516 @Deprecated 1517 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1518 throws SecurityException { 1519 try { 1520 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1521 flags, UserHandle.myUserId()).getList(); 1522 } catch (RemoteException e) { 1523 throw e.rethrowFromSystemServer(); 1524 } 1525 } 1526 1527 /** 1528 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1529 * specific user. It requires holding 1530 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1531 * @param maxNum The maximum number of entries to return in the list. The 1532 * actual number returned may be smaller, depending on how many tasks the 1533 * user has started and the maximum number the system can remember. 1534 * @param flags Information about what to return. May be any combination 1535 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1536 * 1537 * @return Returns a list of RecentTaskInfo records describing each of 1538 * the recent tasks. Most recently activated tasks go first. 1539 * 1540 * @hide 1541 */ 1542 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1543 throws SecurityException { 1544 try { 1545 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1546 flags, userId).getList(); 1547 } catch (RemoteException e) { 1548 throw e.rethrowFromSystemServer(); 1549 } 1550 } 1551 1552 /** 1553 * Information you can retrieve about a particular task that is currently 1554 * "running" in the system. Note that a running task does not mean the 1555 * given task actually has a process it is actively running in; it simply 1556 * means that the user has gone to it and never closed it, but currently 1557 * the system may have killed its process and is only holding on to its 1558 * last state in order to restart it when the user returns. 1559 */ 1560 public static class RunningTaskInfo implements Parcelable { 1561 /** 1562 * A unique identifier for this task. 1563 */ 1564 public int id; 1565 1566 /** 1567 * The stack that currently contains this task. 1568 * @hide 1569 */ 1570 public int stackId; 1571 1572 /** 1573 * The component launched as the first activity in the task. This can 1574 * be considered the "application" of this task. 1575 */ 1576 public ComponentName baseActivity; 1577 1578 /** 1579 * The activity component at the top of the history stack of the task. 1580 * This is what the user is currently doing. 1581 */ 1582 public ComponentName topActivity; 1583 1584 /** 1585 * Thumbnail representation of the task's current state. Currently 1586 * always null. 1587 */ 1588 public Bitmap thumbnail; 1589 1590 /** 1591 * Description of the task's current state. 1592 */ 1593 public CharSequence description; 1594 1595 /** 1596 * Number of activities in this task. 1597 */ 1598 public int numActivities; 1599 1600 /** 1601 * Number of activities that are currently running (not stopped 1602 * and persisted) in this task. 1603 */ 1604 public int numRunning; 1605 1606 /** 1607 * Last time task was run. For sorting. 1608 * @hide 1609 */ 1610 public long lastActiveTime; 1611 1612 /** 1613 * True if the task can go in the docked stack. 1614 * @hide 1615 */ 1616 public boolean isDockable; 1617 1618 /** 1619 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1620 * @hide 1621 */ 1622 public int resizeMode; 1623 1624 public RunningTaskInfo() { 1625 } 1626 1627 public int describeContents() { 1628 return 0; 1629 } 1630 1631 public void writeToParcel(Parcel dest, int flags) { 1632 dest.writeInt(id); 1633 dest.writeInt(stackId); 1634 ComponentName.writeToParcel(baseActivity, dest); 1635 ComponentName.writeToParcel(topActivity, dest); 1636 if (thumbnail != null) { 1637 dest.writeInt(1); 1638 thumbnail.writeToParcel(dest, 0); 1639 } else { 1640 dest.writeInt(0); 1641 } 1642 TextUtils.writeToParcel(description, dest, 1643 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1644 dest.writeInt(numActivities); 1645 dest.writeInt(numRunning); 1646 dest.writeInt(isDockable ? 1 : 0); 1647 dest.writeInt(resizeMode); 1648 } 1649 1650 public void readFromParcel(Parcel source) { 1651 id = source.readInt(); 1652 stackId = source.readInt(); 1653 baseActivity = ComponentName.readFromParcel(source); 1654 topActivity = ComponentName.readFromParcel(source); 1655 if (source.readInt() != 0) { 1656 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1657 } else { 1658 thumbnail = null; 1659 } 1660 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1661 numActivities = source.readInt(); 1662 numRunning = source.readInt(); 1663 isDockable = source.readInt() != 0; 1664 resizeMode = source.readInt(); 1665 } 1666 1667 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1668 public RunningTaskInfo createFromParcel(Parcel source) { 1669 return new RunningTaskInfo(source); 1670 } 1671 public RunningTaskInfo[] newArray(int size) { 1672 return new RunningTaskInfo[size]; 1673 } 1674 }; 1675 1676 private RunningTaskInfo(Parcel source) { 1677 readFromParcel(source); 1678 } 1679 } 1680 1681 /** 1682 * Get the list of tasks associated with the calling application. 1683 * 1684 * @return The list of tasks associated with the application making this call. 1685 * @throws SecurityException 1686 */ 1687 public List<ActivityManager.AppTask> getAppTasks() { 1688 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1689 List<IAppTask> appTasks; 1690 try { 1691 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1692 } catch (RemoteException e) { 1693 throw e.rethrowFromSystemServer(); 1694 } 1695 int numAppTasks = appTasks.size(); 1696 for (int i = 0; i < numAppTasks; i++) { 1697 tasks.add(new AppTask(appTasks.get(i))); 1698 } 1699 return tasks; 1700 } 1701 1702 /** 1703 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1704 * with {@link #addAppTask}. 1705 */ 1706 public Size getAppTaskThumbnailSize() { 1707 synchronized (this) { 1708 ensureAppTaskThumbnailSizeLocked(); 1709 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1710 } 1711 } 1712 1713 private void ensureAppTaskThumbnailSizeLocked() { 1714 if (mAppTaskThumbnailSize == null) { 1715 try { 1716 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1717 } catch (RemoteException e) { 1718 throw e.rethrowFromSystemServer(); 1719 } 1720 } 1721 } 1722 1723 /** 1724 * Add a new {@link AppTask} for the calling application. This will create a new 1725 * recents entry that is added to the <b>end</b> of all existing recents. 1726 * 1727 * @param activity The activity that is adding the entry. This is used to help determine 1728 * the context that the new recents entry will be in. 1729 * @param intent The Intent that describes the recents entry. This is the same Intent that 1730 * you would have used to launch the activity for it. In generally you will want to set 1731 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1732 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1733 * entry will exist without an activity, so it doesn't make sense to not retain it when 1734 * its activity disappears. The given Intent here also must have an explicit ComponentName 1735 * set on it. 1736 * @param description Optional additional description information. 1737 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1738 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1739 * recreated in your process, probably in a way you don't like, before the recents entry 1740 * is added. 1741 * 1742 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1743 * most likely cause of failure is that there is no more room for more tasks for your app. 1744 */ 1745 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1746 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1747 Point size; 1748 synchronized (this) { 1749 ensureAppTaskThumbnailSizeLocked(); 1750 size = mAppTaskThumbnailSize; 1751 } 1752 final int tw = thumbnail.getWidth(); 1753 final int th = thumbnail.getHeight(); 1754 if (tw != size.x || th != size.y) { 1755 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1756 1757 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1758 float scale; 1759 float dx = 0, dy = 0; 1760 if (tw * size.x > size.y * th) { 1761 scale = (float) size.x / (float) th; 1762 dx = (size.y - tw * scale) * 0.5f; 1763 } else { 1764 scale = (float) size.y / (float) tw; 1765 dy = (size.x - th * scale) * 0.5f; 1766 } 1767 Matrix matrix = new Matrix(); 1768 matrix.setScale(scale, scale); 1769 matrix.postTranslate((int) (dx + 0.5f), 0); 1770 1771 Canvas canvas = new Canvas(bm); 1772 canvas.drawBitmap(thumbnail, matrix, null); 1773 canvas.setBitmap(null); 1774 1775 thumbnail = bm; 1776 } 1777 if (description == null) { 1778 description = new TaskDescription(); 1779 } 1780 try { 1781 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1782 intent, description, thumbnail); 1783 } catch (RemoteException e) { 1784 throw e.rethrowFromSystemServer(); 1785 } 1786 } 1787 1788 /** 1789 * Return a list of the tasks that are currently running, with 1790 * the most recent being first and older ones after in order. Note that 1791 * "running" does not mean any of the task's code is currently loaded or 1792 * activity -- the task may have been frozen by the system, so that it 1793 * can be restarted in its previous state when next brought to the 1794 * foreground. 1795 * 1796 * <p><b>Note: this method is only intended for debugging and presenting 1797 * task management user interfaces</b>. This should never be used for 1798 * core logic in an application, such as deciding between different 1799 * behaviors based on the information found here. Such uses are 1800 * <em>not</em> supported, and will likely break in the future. For 1801 * example, if multiple applications can be actively running at the 1802 * same time, assumptions made about the meaning of the data here for 1803 * purposes of control flow will be incorrect.</p> 1804 * 1805 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1806 * is no longer available to third party 1807 * applications: the introduction of document-centric recents means 1808 * it can leak person information to the caller. For backwards compatibility, 1809 * it will still retu rn a small subset of its data: at least the caller's 1810 * own tasks, and possibly some other tasks 1811 * such as home that are known to not be sensitive. 1812 * 1813 * @param maxNum The maximum number of entries to return in the list. The 1814 * actual number returned may be smaller, depending on how many tasks the 1815 * user has started. 1816 * 1817 * @return Returns a list of RunningTaskInfo records describing each of 1818 * the running tasks. 1819 */ 1820 @Deprecated 1821 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1822 throws SecurityException { 1823 try { 1824 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1825 } catch (RemoteException e) { 1826 throw e.rethrowFromSystemServer(); 1827 } 1828 } 1829 1830 /** 1831 * Completely remove the given task. 1832 * 1833 * @param taskId Identifier of the task to be removed. 1834 * @return Returns true if the given task was found and removed. 1835 * 1836 * @hide 1837 */ 1838 public boolean removeTask(int taskId) throws SecurityException { 1839 try { 1840 return ActivityManagerNative.getDefault().removeTask(taskId); 1841 } catch (RemoteException e) { 1842 throw e.rethrowFromSystemServer(); 1843 } 1844 } 1845 1846 /** 1847 * Metadata related to the {@link TaskThumbnail}. 1848 * 1849 * @hide 1850 */ 1851 public static class TaskThumbnailInfo implements Parcelable { 1852 /** @hide */ 1853 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1854 private static final String ATTR_TASK_WIDTH = 1855 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1856 private static final String ATTR_TASK_HEIGHT = 1857 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1858 private static final String ATTR_SCREEN_ORIENTATION = 1859 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1860 1861 public int taskWidth; 1862 public int taskHeight; 1863 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1864 1865 public TaskThumbnailInfo() { 1866 // Do nothing 1867 } 1868 1869 private TaskThumbnailInfo(Parcel source) { 1870 readFromParcel(source); 1871 } 1872 1873 /** 1874 * Resets this info state to the initial state. 1875 * @hide 1876 */ 1877 public void reset() { 1878 taskWidth = 0; 1879 taskHeight = 0; 1880 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1881 } 1882 1883 /** 1884 * Copies from another ThumbnailInfo. 1885 */ 1886 public void copyFrom(TaskThumbnailInfo o) { 1887 taskWidth = o.taskWidth; 1888 taskHeight = o.taskHeight; 1889 screenOrientation = o.screenOrientation; 1890 } 1891 1892 /** @hide */ 1893 public void saveToXml(XmlSerializer out) throws IOException { 1894 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1895 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1896 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1897 } 1898 1899 /** @hide */ 1900 public void restoreFromXml(String attrName, String attrValue) { 1901 if (ATTR_TASK_WIDTH.equals(attrName)) { 1902 taskWidth = Integer.parseInt(attrValue); 1903 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1904 taskHeight = Integer.parseInt(attrValue); 1905 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1906 screenOrientation = Integer.parseInt(attrValue); 1907 } 1908 } 1909 1910 public int describeContents() { 1911 return 0; 1912 } 1913 1914 public void writeToParcel(Parcel dest, int flags) { 1915 dest.writeInt(taskWidth); 1916 dest.writeInt(taskHeight); 1917 dest.writeInt(screenOrientation); 1918 } 1919 1920 public void readFromParcel(Parcel source) { 1921 taskWidth = source.readInt(); 1922 taskHeight = source.readInt(); 1923 screenOrientation = source.readInt(); 1924 } 1925 1926 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1927 public TaskThumbnailInfo createFromParcel(Parcel source) { 1928 return new TaskThumbnailInfo(source); 1929 } 1930 public TaskThumbnailInfo[] newArray(int size) { 1931 return new TaskThumbnailInfo[size]; 1932 } 1933 }; 1934 } 1935 1936 /** @hide */ 1937 public static class TaskThumbnail implements Parcelable { 1938 public Bitmap mainThumbnail; 1939 public ParcelFileDescriptor thumbnailFileDescriptor; 1940 public TaskThumbnailInfo thumbnailInfo; 1941 1942 public TaskThumbnail() { 1943 } 1944 1945 private TaskThumbnail(Parcel source) { 1946 readFromParcel(source); 1947 } 1948 1949 public int describeContents() { 1950 if (thumbnailFileDescriptor != null) { 1951 return thumbnailFileDescriptor.describeContents(); 1952 } 1953 return 0; 1954 } 1955 1956 public void writeToParcel(Parcel dest, int flags) { 1957 if (mainThumbnail != null) { 1958 dest.writeInt(1); 1959 mainThumbnail.writeToParcel(dest, flags); 1960 } else { 1961 dest.writeInt(0); 1962 } 1963 if (thumbnailFileDescriptor != null) { 1964 dest.writeInt(1); 1965 thumbnailFileDescriptor.writeToParcel(dest, flags); 1966 } else { 1967 dest.writeInt(0); 1968 } 1969 if (thumbnailInfo != null) { 1970 dest.writeInt(1); 1971 thumbnailInfo.writeToParcel(dest, flags); 1972 } else { 1973 dest.writeInt(0); 1974 } 1975 } 1976 1977 public void readFromParcel(Parcel source) { 1978 if (source.readInt() != 0) { 1979 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1980 } else { 1981 mainThumbnail = null; 1982 } 1983 if (source.readInt() != 0) { 1984 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1985 } else { 1986 thumbnailFileDescriptor = null; 1987 } 1988 if (source.readInt() != 0) { 1989 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1990 } else { 1991 thumbnailInfo = null; 1992 } 1993 } 1994 1995 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1996 public TaskThumbnail createFromParcel(Parcel source) { 1997 return new TaskThumbnail(source); 1998 } 1999 public TaskThumbnail[] newArray(int size) { 2000 return new TaskThumbnail[size]; 2001 } 2002 }; 2003 } 2004 2005 /** @hide */ 2006 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2007 try { 2008 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 2009 } catch (RemoteException e) { 2010 throw e.rethrowFromSystemServer(); 2011 } 2012 } 2013 2014 /** @hide */ 2015 public boolean isInHomeStack(int taskId) { 2016 try { 2017 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 2018 } catch (RemoteException e) { 2019 throw e.rethrowFromSystemServer(); 2020 } 2021 } 2022 2023 /** 2024 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2025 * activity along with the task, so it is positioned immediately behind 2026 * the task. 2027 */ 2028 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2029 2030 /** 2031 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2032 * user-instigated action, so the current activity will not receive a 2033 * hint that the user is leaving. 2034 */ 2035 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2036 2037 /** 2038 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2039 * with a null options argument. 2040 * 2041 * @param taskId The identifier of the task to be moved, as found in 2042 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2043 * @param flags Additional operational flags, 0 or more of 2044 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2045 */ 2046 public void moveTaskToFront(int taskId, int flags) { 2047 moveTaskToFront(taskId, flags, null); 2048 } 2049 2050 /** 2051 * Ask that the task associated with a given task ID be moved to the 2052 * front of the stack, so it is now visible to the user. Requires that 2053 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2054 * or a SecurityException will be thrown. 2055 * 2056 * @param taskId The identifier of the task to be moved, as found in 2057 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2058 * @param flags Additional operational flags, 0 or more of 2059 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2060 * @param options Additional options for the operation, either null or 2061 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2062 * Context.startActivity(Intent, Bundle)}. 2063 */ 2064 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2065 try { 2066 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 2067 } catch (RemoteException e) { 2068 throw e.rethrowFromSystemServer(); 2069 } 2070 } 2071 2072 /** 2073 * Information you can retrieve about a particular Service that is 2074 * currently running in the system. 2075 */ 2076 public static class RunningServiceInfo implements Parcelable { 2077 /** 2078 * The service component. 2079 */ 2080 public ComponentName service; 2081 2082 /** 2083 * If non-zero, this is the process the service is running in. 2084 */ 2085 public int pid; 2086 2087 /** 2088 * The UID that owns this service. 2089 */ 2090 public int uid; 2091 2092 /** 2093 * The name of the process this service runs in. 2094 */ 2095 public String process; 2096 2097 /** 2098 * Set to true if the service has asked to run as a foreground process. 2099 */ 2100 public boolean foreground; 2101 2102 /** 2103 * The time when the service was first made active, either by someone 2104 * starting or binding to it. This 2105 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2106 */ 2107 public long activeSince; 2108 2109 /** 2110 * Set to true if this service has been explicitly started. 2111 */ 2112 public boolean started; 2113 2114 /** 2115 * Number of clients connected to the service. 2116 */ 2117 public int clientCount; 2118 2119 /** 2120 * Number of times the service's process has crashed while the service 2121 * is running. 2122 */ 2123 public int crashCount; 2124 2125 /** 2126 * The time when there was last activity in the service (either 2127 * explicit requests to start it or clients binding to it). This 2128 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2129 */ 2130 public long lastActivityTime; 2131 2132 /** 2133 * If non-zero, this service is not currently running, but scheduled to 2134 * restart at the given time. 2135 */ 2136 public long restarting; 2137 2138 /** 2139 * Bit for {@link #flags}: set if this service has been 2140 * explicitly started. 2141 */ 2142 public static final int FLAG_STARTED = 1<<0; 2143 2144 /** 2145 * Bit for {@link #flags}: set if the service has asked to 2146 * run as a foreground process. 2147 */ 2148 public static final int FLAG_FOREGROUND = 1<<1; 2149 2150 /** 2151 * Bit for {@link #flags): set if the service is running in a 2152 * core system process. 2153 */ 2154 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2155 2156 /** 2157 * Bit for {@link #flags): set if the service is running in a 2158 * persistent process. 2159 */ 2160 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2161 2162 /** 2163 * Running flags. 2164 */ 2165 public int flags; 2166 2167 /** 2168 * For special services that are bound to by system code, this is 2169 * the package that holds the binding. 2170 */ 2171 public String clientPackage; 2172 2173 /** 2174 * For special services that are bound to by system code, this is 2175 * a string resource providing a user-visible label for who the 2176 * client is. 2177 */ 2178 public int clientLabel; 2179 2180 public RunningServiceInfo() { 2181 } 2182 2183 public int describeContents() { 2184 return 0; 2185 } 2186 2187 public void writeToParcel(Parcel dest, int flags) { 2188 ComponentName.writeToParcel(service, dest); 2189 dest.writeInt(pid); 2190 dest.writeInt(uid); 2191 dest.writeString(process); 2192 dest.writeInt(foreground ? 1 : 0); 2193 dest.writeLong(activeSince); 2194 dest.writeInt(started ? 1 : 0); 2195 dest.writeInt(clientCount); 2196 dest.writeInt(crashCount); 2197 dest.writeLong(lastActivityTime); 2198 dest.writeLong(restarting); 2199 dest.writeInt(this.flags); 2200 dest.writeString(clientPackage); 2201 dest.writeInt(clientLabel); 2202 } 2203 2204 public void readFromParcel(Parcel source) { 2205 service = ComponentName.readFromParcel(source); 2206 pid = source.readInt(); 2207 uid = source.readInt(); 2208 process = source.readString(); 2209 foreground = source.readInt() != 0; 2210 activeSince = source.readLong(); 2211 started = source.readInt() != 0; 2212 clientCount = source.readInt(); 2213 crashCount = source.readInt(); 2214 lastActivityTime = source.readLong(); 2215 restarting = source.readLong(); 2216 flags = source.readInt(); 2217 clientPackage = source.readString(); 2218 clientLabel = source.readInt(); 2219 } 2220 2221 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2222 public RunningServiceInfo createFromParcel(Parcel source) { 2223 return new RunningServiceInfo(source); 2224 } 2225 public RunningServiceInfo[] newArray(int size) { 2226 return new RunningServiceInfo[size]; 2227 } 2228 }; 2229 2230 private RunningServiceInfo(Parcel source) { 2231 readFromParcel(source); 2232 } 2233 } 2234 2235 /** 2236 * Return a list of the services that are currently running. 2237 * 2238 * <p><b>Note: this method is only intended for debugging or implementing 2239 * service management type user interfaces.</b></p> 2240 * 2241 * @param maxNum The maximum number of entries to return in the list. The 2242 * actual number returned may be smaller, depending on how many services 2243 * are running. 2244 * 2245 * @return Returns a list of RunningServiceInfo records describing each of 2246 * the running tasks. 2247 */ 2248 public List<RunningServiceInfo> getRunningServices(int maxNum) 2249 throws SecurityException { 2250 try { 2251 return ActivityManagerNative.getDefault() 2252 .getServices(maxNum, 0); 2253 } catch (RemoteException e) { 2254 throw e.rethrowFromSystemServer(); 2255 } 2256 } 2257 2258 /** 2259 * Returns a PendingIntent you can start to show a control panel for the 2260 * given running service. If the service does not have a control panel, 2261 * null is returned. 2262 */ 2263 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2264 throws SecurityException { 2265 try { 2266 return ActivityManagerNative.getDefault() 2267 .getRunningServiceControlPanel(service); 2268 } catch (RemoteException e) { 2269 throw e.rethrowFromSystemServer(); 2270 } 2271 } 2272 2273 /** 2274 * Information you can retrieve about the available memory through 2275 * {@link ActivityManager#getMemoryInfo}. 2276 */ 2277 public static class MemoryInfo implements Parcelable { 2278 /** 2279 * The available memory on the system. This number should not 2280 * be considered absolute: due to the nature of the kernel, a significant 2281 * portion of this memory is actually in use and needed for the overall 2282 * system to run well. 2283 */ 2284 public long availMem; 2285 2286 /** 2287 * The total memory accessible by the kernel. This is basically the 2288 * RAM size of the device, not including below-kernel fixed allocations 2289 * like DMA buffers, RAM for the baseband CPU, etc. 2290 */ 2291 public long totalMem; 2292 2293 /** 2294 * The threshold of {@link #availMem} at which we consider memory to be 2295 * low and start killing background services and other non-extraneous 2296 * processes. 2297 */ 2298 public long threshold; 2299 2300 /** 2301 * Set to true if the system considers itself to currently be in a low 2302 * memory situation. 2303 */ 2304 public boolean lowMemory; 2305 2306 /** @hide */ 2307 public long hiddenAppThreshold; 2308 /** @hide */ 2309 public long secondaryServerThreshold; 2310 /** @hide */ 2311 public long visibleAppThreshold; 2312 /** @hide */ 2313 public long foregroundAppThreshold; 2314 2315 public MemoryInfo() { 2316 } 2317 2318 public int describeContents() { 2319 return 0; 2320 } 2321 2322 public void writeToParcel(Parcel dest, int flags) { 2323 dest.writeLong(availMem); 2324 dest.writeLong(totalMem); 2325 dest.writeLong(threshold); 2326 dest.writeInt(lowMemory ? 1 : 0); 2327 dest.writeLong(hiddenAppThreshold); 2328 dest.writeLong(secondaryServerThreshold); 2329 dest.writeLong(visibleAppThreshold); 2330 dest.writeLong(foregroundAppThreshold); 2331 } 2332 2333 public void readFromParcel(Parcel source) { 2334 availMem = source.readLong(); 2335 totalMem = source.readLong(); 2336 threshold = source.readLong(); 2337 lowMemory = source.readInt() != 0; 2338 hiddenAppThreshold = source.readLong(); 2339 secondaryServerThreshold = source.readLong(); 2340 visibleAppThreshold = source.readLong(); 2341 foregroundAppThreshold = source.readLong(); 2342 } 2343 2344 public static final Creator<MemoryInfo> CREATOR 2345 = new Creator<MemoryInfo>() { 2346 public MemoryInfo createFromParcel(Parcel source) { 2347 return new MemoryInfo(source); 2348 } 2349 public MemoryInfo[] newArray(int size) { 2350 return new MemoryInfo[size]; 2351 } 2352 }; 2353 2354 private MemoryInfo(Parcel source) { 2355 readFromParcel(source); 2356 } 2357 } 2358 2359 /** 2360 * Return general information about the memory state of the system. This 2361 * can be used to help decide how to manage your own memory, though note 2362 * that polling is not recommended and 2363 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2364 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2365 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2366 * level of your process as needed, which gives a better hint for how to 2367 * manage its memory. 2368 */ 2369 public void getMemoryInfo(MemoryInfo outInfo) { 2370 try { 2371 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2372 } catch (RemoteException e) { 2373 throw e.rethrowFromSystemServer(); 2374 } 2375 } 2376 2377 /** 2378 * Information you can retrieve about an ActivityStack in the system. 2379 * @hide 2380 */ 2381 public static class StackInfo implements Parcelable { 2382 public int stackId; 2383 public Rect bounds = new Rect(); 2384 public int[] taskIds; 2385 public String[] taskNames; 2386 public Rect[] taskBounds; 2387 public int[] taskUserIds; 2388 public ComponentName topActivity; 2389 public int displayId; 2390 public int userId; 2391 public boolean visible; 2392 // Index of the stack in the display's stack list, can be used for comparison of stack order 2393 public int position; 2394 2395 @Override 2396 public int describeContents() { 2397 return 0; 2398 } 2399 2400 @Override 2401 public void writeToParcel(Parcel dest, int flags) { 2402 dest.writeInt(stackId); 2403 dest.writeInt(bounds.left); 2404 dest.writeInt(bounds.top); 2405 dest.writeInt(bounds.right); 2406 dest.writeInt(bounds.bottom); 2407 dest.writeIntArray(taskIds); 2408 dest.writeStringArray(taskNames); 2409 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2410 dest.writeInt(boundsCount); 2411 for (int i = 0; i < boundsCount; i++) { 2412 dest.writeInt(taskBounds[i].left); 2413 dest.writeInt(taskBounds[i].top); 2414 dest.writeInt(taskBounds[i].right); 2415 dest.writeInt(taskBounds[i].bottom); 2416 } 2417 dest.writeIntArray(taskUserIds); 2418 dest.writeInt(displayId); 2419 dest.writeInt(userId); 2420 dest.writeInt(visible ? 1 : 0); 2421 dest.writeInt(position); 2422 if (topActivity != null) { 2423 dest.writeInt(1); 2424 topActivity.writeToParcel(dest, 0); 2425 } else { 2426 dest.writeInt(0); 2427 } 2428 } 2429 2430 public void readFromParcel(Parcel source) { 2431 stackId = source.readInt(); 2432 bounds = new Rect( 2433 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2434 taskIds = source.createIntArray(); 2435 taskNames = source.createStringArray(); 2436 final int boundsCount = source.readInt(); 2437 if (boundsCount > 0) { 2438 taskBounds = new Rect[boundsCount]; 2439 for (int i = 0; i < boundsCount; i++) { 2440 taskBounds[i] = new Rect(); 2441 taskBounds[i].set( 2442 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2443 } 2444 } else { 2445 taskBounds = null; 2446 } 2447 taskUserIds = source.createIntArray(); 2448 displayId = source.readInt(); 2449 userId = source.readInt(); 2450 visible = source.readInt() > 0; 2451 position = source.readInt(); 2452 if (source.readInt() > 0) { 2453 topActivity = ComponentName.readFromParcel(source); 2454 } 2455 } 2456 2457 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2458 @Override 2459 public StackInfo createFromParcel(Parcel source) { 2460 return new StackInfo(source); 2461 } 2462 @Override 2463 public StackInfo[] newArray(int size) { 2464 return new StackInfo[size]; 2465 } 2466 }; 2467 2468 public StackInfo() { 2469 } 2470 2471 private StackInfo(Parcel source) { 2472 readFromParcel(source); 2473 } 2474 2475 public String toString(String prefix) { 2476 StringBuilder sb = new StringBuilder(256); 2477 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2478 sb.append(" bounds="); sb.append(bounds.toShortString()); 2479 sb.append(" displayId="); sb.append(displayId); 2480 sb.append(" userId="); sb.append(userId); 2481 sb.append("\n"); 2482 prefix = prefix + " "; 2483 for (int i = 0; i < taskIds.length; ++i) { 2484 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2485 sb.append(": "); sb.append(taskNames[i]); 2486 if (taskBounds != null) { 2487 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2488 } 2489 sb.append(" userId=").append(taskUserIds[i]); 2490 sb.append(" visible=").append(visible); 2491 if (topActivity != null) { 2492 sb.append(" topActivity=").append(topActivity); 2493 } 2494 sb.append("\n"); 2495 } 2496 return sb.toString(); 2497 } 2498 2499 @Override 2500 public String toString() { 2501 return toString(""); 2502 } 2503 } 2504 2505 /** 2506 * @hide 2507 */ 2508 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2509 try { 2510 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2511 observer, UserHandle.myUserId()); 2512 } catch (RemoteException e) { 2513 throw e.rethrowFromSystemServer(); 2514 } 2515 } 2516 2517 /** 2518 * Permits an application to erase its own data from disk. This is equivalent to 2519 * the user choosing to clear the app's data from within the device settings UI. It 2520 * erases all dynamic data associated with the app -- its private data and data in its 2521 * private area on external storage -- but does not remove the installed application 2522 * itself, nor any OBB files. 2523 * 2524 * @return {@code true} if the application successfully requested that the application's 2525 * data be erased; {@code false} otherwise. 2526 */ 2527 public boolean clearApplicationUserData() { 2528 return clearApplicationUserData(mContext.getPackageName(), null); 2529 } 2530 2531 2532 /** 2533 * Permits an application to get the persistent URI permissions granted to another. 2534 * 2535 * <p>Typically called by Settings. 2536 * 2537 * @param packageName application to look for the granted permissions 2538 * @return list of granted URI permissions 2539 * 2540 * @hide 2541 */ 2542 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2543 try { 2544 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2545 UserHandle.myUserId()); 2546 } catch (RemoteException e) { 2547 throw e.rethrowFromSystemServer(); 2548 } 2549 } 2550 2551 /** 2552 * Permits an application to clear the persistent URI permissions granted to another. 2553 * 2554 * <p>Typically called by Settings. 2555 * 2556 * @param packageName application to clear its granted permissions 2557 * 2558 * @hide 2559 */ 2560 public void clearGrantedUriPermissions(String packageName) { 2561 try { 2562 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2563 UserHandle.myUserId()); 2564 } catch (RemoteException e) { 2565 throw e.rethrowFromSystemServer(); 2566 } 2567 } 2568 2569 /** 2570 * Information you can retrieve about any processes that are in an error condition. 2571 */ 2572 public static class ProcessErrorStateInfo implements Parcelable { 2573 /** 2574 * Condition codes 2575 */ 2576 public static final int NO_ERROR = 0; 2577 public static final int CRASHED = 1; 2578 public static final int NOT_RESPONDING = 2; 2579 2580 /** 2581 * The condition that the process is in. 2582 */ 2583 public int condition; 2584 2585 /** 2586 * The process name in which the crash or error occurred. 2587 */ 2588 public String processName; 2589 2590 /** 2591 * The pid of this process; 0 if none 2592 */ 2593 public int pid; 2594 2595 /** 2596 * The kernel user-ID that has been assigned to this process; 2597 * currently this is not a unique ID (multiple applications can have 2598 * the same uid). 2599 */ 2600 public int uid; 2601 2602 /** 2603 * The activity name associated with the error, if known. May be null. 2604 */ 2605 public String tag; 2606 2607 /** 2608 * A short message describing the error condition. 2609 */ 2610 public String shortMsg; 2611 2612 /** 2613 * A long message describing the error condition. 2614 */ 2615 public String longMsg; 2616 2617 /** 2618 * The stack trace where the error originated. May be null. 2619 */ 2620 public String stackTrace; 2621 2622 /** 2623 * to be deprecated: This value will always be null. 2624 */ 2625 public byte[] crashData = null; 2626 2627 public ProcessErrorStateInfo() { 2628 } 2629 2630 @Override 2631 public int describeContents() { 2632 return 0; 2633 } 2634 2635 @Override 2636 public void writeToParcel(Parcel dest, int flags) { 2637 dest.writeInt(condition); 2638 dest.writeString(processName); 2639 dest.writeInt(pid); 2640 dest.writeInt(uid); 2641 dest.writeString(tag); 2642 dest.writeString(shortMsg); 2643 dest.writeString(longMsg); 2644 dest.writeString(stackTrace); 2645 } 2646 2647 public void readFromParcel(Parcel source) { 2648 condition = source.readInt(); 2649 processName = source.readString(); 2650 pid = source.readInt(); 2651 uid = source.readInt(); 2652 tag = source.readString(); 2653 shortMsg = source.readString(); 2654 longMsg = source.readString(); 2655 stackTrace = source.readString(); 2656 } 2657 2658 public static final Creator<ProcessErrorStateInfo> CREATOR = 2659 new Creator<ProcessErrorStateInfo>() { 2660 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2661 return new ProcessErrorStateInfo(source); 2662 } 2663 public ProcessErrorStateInfo[] newArray(int size) { 2664 return new ProcessErrorStateInfo[size]; 2665 } 2666 }; 2667 2668 private ProcessErrorStateInfo(Parcel source) { 2669 readFromParcel(source); 2670 } 2671 } 2672 2673 /** 2674 * Returns a list of any processes that are currently in an error condition. The result 2675 * will be null if all processes are running properly at this time. 2676 * 2677 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2678 * current error conditions (it will not return an empty list). This list ordering is not 2679 * specified. 2680 */ 2681 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2682 try { 2683 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2684 } catch (RemoteException e) { 2685 throw e.rethrowFromSystemServer(); 2686 } 2687 } 2688 2689 /** 2690 * Information you can retrieve about a running process. 2691 */ 2692 public static class RunningAppProcessInfo implements Parcelable { 2693 /** 2694 * The name of the process that this object is associated with 2695 */ 2696 public String processName; 2697 2698 /** 2699 * The pid of this process; 0 if none 2700 */ 2701 public int pid; 2702 2703 /** 2704 * The user id of this process. 2705 */ 2706 public int uid; 2707 2708 /** 2709 * All packages that have been loaded into the process. 2710 */ 2711 public String pkgList[]; 2712 2713 /** 2714 * Constant for {@link #flags}: this is an app that is unable to 2715 * correctly save its state when going to the background, 2716 * so it can not be killed while in the background. 2717 * @hide 2718 */ 2719 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2720 2721 /** 2722 * Constant for {@link #flags}: this process is associated with a 2723 * persistent system app. 2724 * @hide 2725 */ 2726 public static final int FLAG_PERSISTENT = 1<<1; 2727 2728 /** 2729 * Constant for {@link #flags}: this process is associated with a 2730 * persistent system app. 2731 * @hide 2732 */ 2733 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2734 2735 /** 2736 * Flags of information. May be any of 2737 * {@link #FLAG_CANT_SAVE_STATE}. 2738 * @hide 2739 */ 2740 public int flags; 2741 2742 /** 2743 * Last memory trim level reported to the process: corresponds to 2744 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2745 * ComponentCallbacks2.onTrimMemory(int)}. 2746 */ 2747 public int lastTrimLevel; 2748 2749 /** 2750 * Constant for {@link #importance}: This process is running the 2751 * foreground UI; that is, it is the thing currently at the top of the screen 2752 * that the user is interacting with. 2753 */ 2754 public static final int IMPORTANCE_FOREGROUND = 100; 2755 2756 /** 2757 * Constant for {@link #importance}: This process is running a foreground 2758 * service, for example to perform music playback even while the user is 2759 * not immediately in the app. This generally indicates that the process 2760 * is doing something the user actively cares about. 2761 */ 2762 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2763 2764 /** 2765 * Constant for {@link #importance}: This process is running the foreground 2766 * UI, but the device is asleep so it is not visible to the user. This means 2767 * the user is not really aware of the process, because they can not see or 2768 * interact with it, but it is quite important because it what they expect to 2769 * return to once unlocking the device. 2770 */ 2771 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2772 2773 /** 2774 * Constant for {@link #importance}: This process is running something 2775 * that is actively visible to the user, though not in the immediate 2776 * foreground. This may be running a window that is behind the current 2777 * foreground (so paused and with its state saved, not interacting with 2778 * the user, but visible to them to some degree); it may also be running 2779 * other services under the system's control that it inconsiders important. 2780 */ 2781 public static final int IMPORTANCE_VISIBLE = 200; 2782 2783 /** 2784 * Constant for {@link #importance}: This process is not something the user 2785 * is directly aware of, but is otherwise perceptable to them to some degree. 2786 */ 2787 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2788 2789 /** 2790 * Constant for {@link #importance}: This process is running an 2791 * application that can not save its state, and thus can't be killed 2792 * while in the background. 2793 * @hide 2794 */ 2795 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2796 2797 /** 2798 * Constant for {@link #importance}: This process is contains services 2799 * that should remain running. These are background services apps have 2800 * started, not something the user is aware of, so they may be killed by 2801 * the system relatively freely (though it is generally desired that they 2802 * stay running as long as they want to). 2803 */ 2804 public static final int IMPORTANCE_SERVICE = 300; 2805 2806 /** 2807 * Constant for {@link #importance}: This process process contains 2808 * background code that is expendable. 2809 */ 2810 public static final int IMPORTANCE_BACKGROUND = 400; 2811 2812 /** 2813 * Constant for {@link #importance}: This process is empty of any 2814 * actively running code. 2815 */ 2816 public static final int IMPORTANCE_EMPTY = 500; 2817 2818 /** 2819 * Constant for {@link #importance}: This process does not exist. 2820 */ 2821 public static final int IMPORTANCE_GONE = 1000; 2822 2823 /** @hide */ 2824 public static int procStateToImportance(int procState) { 2825 if (procState == PROCESS_STATE_NONEXISTENT) { 2826 return IMPORTANCE_GONE; 2827 } else if (procState >= PROCESS_STATE_HOME) { 2828 return IMPORTANCE_BACKGROUND; 2829 } else if (procState >= PROCESS_STATE_SERVICE) { 2830 return IMPORTANCE_SERVICE; 2831 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2832 return IMPORTANCE_CANT_SAVE_STATE; 2833 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2834 return IMPORTANCE_PERCEPTIBLE; 2835 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2836 return IMPORTANCE_VISIBLE; 2837 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2838 return IMPORTANCE_TOP_SLEEPING; 2839 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2840 return IMPORTANCE_FOREGROUND_SERVICE; 2841 } else { 2842 return IMPORTANCE_FOREGROUND; 2843 } 2844 } 2845 2846 /** 2847 * The relative importance level that the system places on this 2848 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2849 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2850 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2851 * constants are numbered so that "more important" values are always 2852 * smaller than "less important" values. 2853 */ 2854 public int importance; 2855 2856 /** 2857 * An additional ordering within a particular {@link #importance} 2858 * category, providing finer-grained information about the relative 2859 * utility of processes within a category. This number means nothing 2860 * except that a smaller values are more recently used (and thus 2861 * more important). Currently an LRU value is only maintained for 2862 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2863 * be maintained in the future. 2864 */ 2865 public int lru; 2866 2867 /** 2868 * Constant for {@link #importanceReasonCode}: nothing special has 2869 * been specified for the reason for this level. 2870 */ 2871 public static final int REASON_UNKNOWN = 0; 2872 2873 /** 2874 * Constant for {@link #importanceReasonCode}: one of the application's 2875 * content providers is being used by another process. The pid of 2876 * the client process is in {@link #importanceReasonPid} and the 2877 * target provider in this process is in 2878 * {@link #importanceReasonComponent}. 2879 */ 2880 public static final int REASON_PROVIDER_IN_USE = 1; 2881 2882 /** 2883 * Constant for {@link #importanceReasonCode}: one of the application's 2884 * content providers is being used by another process. The pid of 2885 * the client process is in {@link #importanceReasonPid} and the 2886 * target provider in this process is in 2887 * {@link #importanceReasonComponent}. 2888 */ 2889 public static final int REASON_SERVICE_IN_USE = 2; 2890 2891 /** 2892 * The reason for {@link #importance}, if any. 2893 */ 2894 public int importanceReasonCode; 2895 2896 /** 2897 * For the specified values of {@link #importanceReasonCode}, this 2898 * is the process ID of the other process that is a client of this 2899 * process. This will be 0 if no other process is using this one. 2900 */ 2901 public int importanceReasonPid; 2902 2903 /** 2904 * For the specified values of {@link #importanceReasonCode}, this 2905 * is the name of the component that is being used in this process. 2906 */ 2907 public ComponentName importanceReasonComponent; 2908 2909 /** 2910 * When {@link #importanceReasonPid} is non-0, this is the importance 2911 * of the other pid. @hide 2912 */ 2913 public int importanceReasonImportance; 2914 2915 /** 2916 * Current process state, as per PROCESS_STATE_* constants. 2917 * @hide 2918 */ 2919 public int processState; 2920 2921 public RunningAppProcessInfo() { 2922 importance = IMPORTANCE_FOREGROUND; 2923 importanceReasonCode = REASON_UNKNOWN; 2924 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2925 } 2926 2927 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2928 processName = pProcessName; 2929 pid = pPid; 2930 pkgList = pArr; 2931 } 2932 2933 public int describeContents() { 2934 return 0; 2935 } 2936 2937 public void writeToParcel(Parcel dest, int flags) { 2938 dest.writeString(processName); 2939 dest.writeInt(pid); 2940 dest.writeInt(uid); 2941 dest.writeStringArray(pkgList); 2942 dest.writeInt(this.flags); 2943 dest.writeInt(lastTrimLevel); 2944 dest.writeInt(importance); 2945 dest.writeInt(lru); 2946 dest.writeInt(importanceReasonCode); 2947 dest.writeInt(importanceReasonPid); 2948 ComponentName.writeToParcel(importanceReasonComponent, dest); 2949 dest.writeInt(importanceReasonImportance); 2950 dest.writeInt(processState); 2951 } 2952 2953 public void readFromParcel(Parcel source) { 2954 processName = source.readString(); 2955 pid = source.readInt(); 2956 uid = source.readInt(); 2957 pkgList = source.readStringArray(); 2958 flags = source.readInt(); 2959 lastTrimLevel = source.readInt(); 2960 importance = source.readInt(); 2961 lru = source.readInt(); 2962 importanceReasonCode = source.readInt(); 2963 importanceReasonPid = source.readInt(); 2964 importanceReasonComponent = ComponentName.readFromParcel(source); 2965 importanceReasonImportance = source.readInt(); 2966 processState = source.readInt(); 2967 } 2968 2969 public static final Creator<RunningAppProcessInfo> CREATOR = 2970 new Creator<RunningAppProcessInfo>() { 2971 public RunningAppProcessInfo createFromParcel(Parcel source) { 2972 return new RunningAppProcessInfo(source); 2973 } 2974 public RunningAppProcessInfo[] newArray(int size) { 2975 return new RunningAppProcessInfo[size]; 2976 } 2977 }; 2978 2979 private RunningAppProcessInfo(Parcel source) { 2980 readFromParcel(source); 2981 } 2982 } 2983 2984 /** 2985 * Returns a list of application processes installed on external media 2986 * that are running on the device. 2987 * 2988 * <p><b>Note: this method is only intended for debugging or building 2989 * a user-facing process management UI.</b></p> 2990 * 2991 * @return Returns a list of ApplicationInfo records, or null if none 2992 * This list ordering is not specified. 2993 * @hide 2994 */ 2995 public List<ApplicationInfo> getRunningExternalApplications() { 2996 try { 2997 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2998 } catch (RemoteException e) { 2999 throw e.rethrowFromSystemServer(); 3000 } 3001 } 3002 3003 /** 3004 * Sets the memory trim mode for a process and schedules a memory trim operation. 3005 * 3006 * <p><b>Note: this method is only intended for testing framework.</b></p> 3007 * 3008 * @return Returns true if successful. 3009 * @hide 3010 */ 3011 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3012 try { 3013 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 3014 level); 3015 } catch (RemoteException e) { 3016 throw e.rethrowFromSystemServer(); 3017 } 3018 } 3019 3020 /** 3021 * Returns a list of application processes that are running on the device. 3022 * 3023 * <p><b>Note: this method is only intended for debugging or building 3024 * a user-facing process management UI.</b></p> 3025 * 3026 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3027 * running processes (it will not return an empty list). This list ordering is not 3028 * specified. 3029 */ 3030 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3031 try { 3032 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 3033 } catch (RemoteException e) { 3034 throw e.rethrowFromSystemServer(); 3035 } 3036 } 3037 3038 /** 3039 * Return the importance of a given package name, based on the processes that are 3040 * currently running. The return value is one of the importance constants defined 3041 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3042 * processes that this package has code running inside of. If there are no processes 3043 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3044 * @hide 3045 */ 3046 @SystemApi 3047 public int getPackageImportance(String packageName) { 3048 try { 3049 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 3050 mContext.getOpPackageName()); 3051 return RunningAppProcessInfo.procStateToImportance(procState); 3052 } catch (RemoteException e) { 3053 throw e.rethrowFromSystemServer(); 3054 } 3055 } 3056 3057 /** 3058 * Return global memory state information for the calling process. This 3059 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3060 * only fields that will be filled in are 3061 * {@link RunningAppProcessInfo#pid}, 3062 * {@link RunningAppProcessInfo#uid}, 3063 * {@link RunningAppProcessInfo#lastTrimLevel}, 3064 * {@link RunningAppProcessInfo#importance}, 3065 * {@link RunningAppProcessInfo#lru}, and 3066 * {@link RunningAppProcessInfo#importanceReasonCode}. 3067 */ 3068 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3069 try { 3070 ActivityManagerNative.getDefault().getMyMemoryState(outState); 3071 } catch (RemoteException e) { 3072 throw e.rethrowFromSystemServer(); 3073 } 3074 } 3075 3076 /** 3077 * Return information about the memory usage of one or more processes. 3078 * 3079 * <p><b>Note: this method is only intended for debugging or building 3080 * a user-facing process management UI.</b></p> 3081 * 3082 * @param pids The pids of the processes whose memory usage is to be 3083 * retrieved. 3084 * @return Returns an array of memory information, one for each 3085 * requested pid. 3086 */ 3087 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3088 try { 3089 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 3090 } catch (RemoteException e) { 3091 throw e.rethrowFromSystemServer(); 3092 } 3093 } 3094 3095 /** 3096 * @deprecated This is now just a wrapper for 3097 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3098 * is no longer available to applications because it allows them to 3099 * break other applications by removing their alarms, stopping their 3100 * services, etc. 3101 */ 3102 @Deprecated 3103 public void restartPackage(String packageName) { 3104 killBackgroundProcesses(packageName); 3105 } 3106 3107 /** 3108 * Have the system immediately kill all background processes associated 3109 * with the given package. This is the same as the kernel killing those 3110 * processes to reclaim memory; the system will take care of restarting 3111 * these processes in the future as needed. 3112 * 3113 * <p>You must hold the permission 3114 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3115 * call this method. 3116 * 3117 * @param packageName The name of the package whose processes are to 3118 * be killed. 3119 */ 3120 public void killBackgroundProcesses(String packageName) { 3121 try { 3122 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 3123 UserHandle.myUserId()); 3124 } catch (RemoteException e) { 3125 throw e.rethrowFromSystemServer(); 3126 } 3127 } 3128 3129 /** 3130 * Kills the specified UID. 3131 * @param uid The UID to kill. 3132 * @param reason The reason for the kill. 3133 * 3134 * @hide 3135 */ 3136 @SystemApi 3137 @RequiresPermission(Manifest.permission.KILL_UID) 3138 public void killUid(int uid, String reason) { 3139 try { 3140 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3141 UserHandle.getUserId(uid), reason); 3142 } catch (RemoteException e) { 3143 throw e.rethrowFromSystemServer(); 3144 } 3145 } 3146 3147 /** 3148 * Have the system perform a force stop of everything associated with 3149 * the given application package. All processes that share its uid 3150 * will be killed, all services it has running stopped, all activities 3151 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3152 * broadcast will be sent, so that any of its registered alarms can 3153 * be stopped, notifications removed, etc. 3154 * 3155 * <p>You must hold the permission 3156 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3157 * call this method. 3158 * 3159 * @param packageName The name of the package to be stopped. 3160 * @param userId The user for which the running package is to be stopped. 3161 * 3162 * @hide This is not available to third party applications due to 3163 * it allowing them to break other applications by stopping their 3164 * services, removing their alarms, etc. 3165 */ 3166 public void forceStopPackageAsUser(String packageName, int userId) { 3167 try { 3168 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3169 } catch (RemoteException e) { 3170 throw e.rethrowFromSystemServer(); 3171 } 3172 } 3173 3174 /** 3175 * @see #forceStopPackageAsUser(String, int) 3176 * @hide 3177 */ 3178 public void forceStopPackage(String packageName) { 3179 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3180 } 3181 3182 /** 3183 * Get the device configuration attributes. 3184 */ 3185 public ConfigurationInfo getDeviceConfigurationInfo() { 3186 try { 3187 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3188 } catch (RemoteException e) { 3189 throw e.rethrowFromSystemServer(); 3190 } 3191 } 3192 3193 /** 3194 * Get the preferred density of icons for the launcher. This is used when 3195 * custom drawables are created (e.g., for shortcuts). 3196 * 3197 * @return density in terms of DPI 3198 */ 3199 public int getLauncherLargeIconDensity() { 3200 final Resources res = mContext.getResources(); 3201 final int density = res.getDisplayMetrics().densityDpi; 3202 final int sw = res.getConfiguration().smallestScreenWidthDp; 3203 3204 if (sw < 600) { 3205 // Smaller than approx 7" tablets, use the regular icon size. 3206 return density; 3207 } 3208 3209 switch (density) { 3210 case DisplayMetrics.DENSITY_LOW: 3211 return DisplayMetrics.DENSITY_MEDIUM; 3212 case DisplayMetrics.DENSITY_MEDIUM: 3213 return DisplayMetrics.DENSITY_HIGH; 3214 case DisplayMetrics.DENSITY_TV: 3215 return DisplayMetrics.DENSITY_XHIGH; 3216 case DisplayMetrics.DENSITY_HIGH: 3217 return DisplayMetrics.DENSITY_XHIGH; 3218 case DisplayMetrics.DENSITY_XHIGH: 3219 return DisplayMetrics.DENSITY_XXHIGH; 3220 case DisplayMetrics.DENSITY_XXHIGH: 3221 return DisplayMetrics.DENSITY_XHIGH * 2; 3222 default: 3223 // The density is some abnormal value. Return some other 3224 // abnormal value that is a reasonable scaling of it. 3225 return (int)((density*1.5f)+.5f); 3226 } 3227 } 3228 3229 /** 3230 * Get the preferred launcher icon size. This is used when custom drawables 3231 * are created (e.g., for shortcuts). 3232 * 3233 * @return dimensions of square icons in terms of pixels 3234 */ 3235 public int getLauncherLargeIconSize() { 3236 return getLauncherLargeIconSizeInner(mContext); 3237 } 3238 3239 static int getLauncherLargeIconSizeInner(Context context) { 3240 final Resources res = context.getResources(); 3241 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3242 final int sw = res.getConfiguration().smallestScreenWidthDp; 3243 3244 if (sw < 600) { 3245 // Smaller than approx 7" tablets, use the regular icon size. 3246 return size; 3247 } 3248 3249 final int density = res.getDisplayMetrics().densityDpi; 3250 3251 switch (density) { 3252 case DisplayMetrics.DENSITY_LOW: 3253 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3254 case DisplayMetrics.DENSITY_MEDIUM: 3255 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3256 case DisplayMetrics.DENSITY_TV: 3257 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3258 case DisplayMetrics.DENSITY_HIGH: 3259 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3260 case DisplayMetrics.DENSITY_XHIGH: 3261 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3262 case DisplayMetrics.DENSITY_XXHIGH: 3263 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3264 default: 3265 // The density is some abnormal value. Return some other 3266 // abnormal value that is a reasonable scaling of it. 3267 return (int)((size*1.5f) + .5f); 3268 } 3269 } 3270 3271 /** 3272 * Returns "true" if the user interface is currently being messed with 3273 * by a monkey. 3274 */ 3275 public static boolean isUserAMonkey() { 3276 try { 3277 return ActivityManagerNative.getDefault().isUserAMonkey(); 3278 } catch (RemoteException e) { 3279 throw e.rethrowFromSystemServer(); 3280 } 3281 } 3282 3283 /** 3284 * Returns "true" if device is running in a test harness. 3285 */ 3286 public static boolean isRunningInTestHarness() { 3287 return SystemProperties.getBoolean("ro.test_harness", false); 3288 } 3289 3290 /** 3291 * Returns the launch count of each installed package. 3292 * 3293 * @hide 3294 */ 3295 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3296 try { 3297 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3298 ServiceManager.getService("usagestats")); 3299 if (usageStatsService == null) { 3300 return new HashMap<String, Integer>(); 3301 } 3302 3303 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3304 ActivityThread.currentPackageName()); 3305 if (allPkgUsageStats == null) { 3306 return new HashMap<String, Integer>(); 3307 } 3308 3309 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3310 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3311 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3312 } 3313 3314 return launchCounts; 3315 } catch (RemoteException e) { 3316 Log.w(TAG, "Could not query launch counts", e); 3317 return new HashMap<String, Integer>(); 3318 } 3319 }*/ 3320 3321 /** @hide */ 3322 public static int checkComponentPermission(String permission, int uid, 3323 int owningUid, boolean exported) { 3324 // Root, system server get to do everything. 3325 final int appId = UserHandle.getAppId(uid); 3326 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3327 return PackageManager.PERMISSION_GRANTED; 3328 } 3329 // Isolated processes don't get any permissions. 3330 if (UserHandle.isIsolated(uid)) { 3331 return PackageManager.PERMISSION_DENIED; 3332 } 3333 // If there is a uid that owns whatever is being accessed, it has 3334 // blanket access to it regardless of the permissions it requires. 3335 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3336 return PackageManager.PERMISSION_GRANTED; 3337 } 3338 // If the target is not exported, then nobody else can get to it. 3339 if (!exported) { 3340 /* 3341 RuntimeException here = new RuntimeException("here"); 3342 here.fillInStackTrace(); 3343 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3344 here); 3345 */ 3346 return PackageManager.PERMISSION_DENIED; 3347 } 3348 if (permission == null) { 3349 return PackageManager.PERMISSION_GRANTED; 3350 } 3351 try { 3352 return AppGlobals.getPackageManager() 3353 .checkUidPermission(permission, uid); 3354 } catch (RemoteException e) { 3355 throw e.rethrowFromSystemServer(); 3356 } 3357 } 3358 3359 /** @hide */ 3360 public static int checkUidPermission(String permission, int uid) { 3361 try { 3362 return AppGlobals.getPackageManager() 3363 .checkUidPermission(permission, uid); 3364 } catch (RemoteException e) { 3365 throw e.rethrowFromSystemServer(); 3366 } 3367 } 3368 3369 /** 3370 * @hide 3371 * Helper for dealing with incoming user arguments to system service calls. 3372 * Takes care of checking permissions and converting USER_CURRENT to the 3373 * actual current user. 3374 * 3375 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3376 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3377 * @param userId The user id argument supplied by the caller -- this is the user 3378 * they want to run as. 3379 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3380 * to get a USER_ALL returned and deal with it correctly. If false, 3381 * an exception will be thrown if USER_ALL is supplied. 3382 * @param requireFull If true, the caller must hold 3383 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3384 * different user than their current process; otherwise they must hold 3385 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3386 * @param name Optional textual name of the incoming call; only for generating error messages. 3387 * @param callerPackage Optional package name of caller; only for error messages. 3388 * 3389 * @return Returns the user ID that the call should run as. Will always be a concrete 3390 * user number, unless <var>allowAll</var> is true in which case it could also be 3391 * USER_ALL. 3392 */ 3393 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3394 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3395 if (UserHandle.getUserId(callingUid) == userId) { 3396 return userId; 3397 } 3398 try { 3399 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3400 callingUid, userId, allowAll, requireFull, name, callerPackage); 3401 } catch (RemoteException e) { 3402 throw e.rethrowFromSystemServer(); 3403 } 3404 } 3405 3406 /** 3407 * Gets the userId of the current foreground user. Requires system permissions. 3408 * @hide 3409 */ 3410 @SystemApi 3411 public static int getCurrentUser() { 3412 UserInfo ui; 3413 try { 3414 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3415 return ui != null ? ui.id : 0; 3416 } catch (RemoteException e) { 3417 throw e.rethrowFromSystemServer(); 3418 } 3419 } 3420 3421 /** 3422 * @param userid the user's id. Zero indicates the default user. 3423 * @hide 3424 */ 3425 public boolean switchUser(int userid) { 3426 try { 3427 return ActivityManagerNative.getDefault().switchUser(userid); 3428 } catch (RemoteException e) { 3429 throw e.rethrowFromSystemServer(); 3430 } 3431 } 3432 3433 /** 3434 * Logs out current current foreground user by switching to the system user and stopping the 3435 * user being switched from. 3436 * @hide 3437 */ 3438 public static void logoutCurrentUser() { 3439 int currentUser = ActivityManager.getCurrentUser(); 3440 if (currentUser != UserHandle.USER_SYSTEM) { 3441 try { 3442 ActivityManagerNative.getDefault().switchUser(UserHandle.USER_SYSTEM); 3443 ActivityManagerNative.getDefault().stopUser(currentUser, /* force= */ false, null); 3444 } catch (RemoteException e) { 3445 e.rethrowFromSystemServer(); 3446 } 3447 } 3448 } 3449 3450 /** {@hide} */ 3451 public static final int FLAG_OR_STOPPED = 1 << 0; 3452 /** {@hide} */ 3453 public static final int FLAG_AND_LOCKED = 1 << 1; 3454 /** {@hide} */ 3455 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3456 /** {@hide} */ 3457 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3458 3459 /** 3460 * Return whether the given user is actively running. This means that 3461 * the user is in the "started" state, not "stopped" -- it is currently 3462 * allowed to run code through scheduled alarms, receiving broadcasts, 3463 * etc. A started user may be either the current foreground user or a 3464 * background user; the result here does not distinguish between the two. 3465 * @param userid the user's id. Zero indicates the default user. 3466 * @hide 3467 */ 3468 public boolean isUserRunning(int userId) { 3469 try { 3470 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3471 } catch (RemoteException e) { 3472 throw e.rethrowFromSystemServer(); 3473 } 3474 } 3475 3476 /** {@hide} */ 3477 public boolean isVrModePackageEnabled(ComponentName component) { 3478 try { 3479 return ActivityManagerNative.getDefault().isVrModePackageEnabled(component); 3480 } catch (RemoteException e) { 3481 throw e.rethrowFromSystemServer(); 3482 } 3483 } 3484 3485 /** 3486 * Perform a system dump of various state associated with the given application 3487 * package name. This call blocks while the dump is being performed, so should 3488 * not be done on a UI thread. The data will be written to the given file 3489 * descriptor as text. An application must hold the 3490 * {@link android.Manifest.permission#DUMP} permission to make this call. 3491 * @param fd The file descriptor that the dump should be written to. The file 3492 * descriptor is <em>not</em> closed by this function; the caller continues to 3493 * own it. 3494 * @param packageName The name of the package that is to be dumped. 3495 */ 3496 public void dumpPackageState(FileDescriptor fd, String packageName) { 3497 dumpPackageStateStatic(fd, packageName); 3498 } 3499 3500 /** 3501 * @hide 3502 */ 3503 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3504 FileOutputStream fout = new FileOutputStream(fd); 3505 PrintWriter pw = new FastPrintWriter(fout); 3506 dumpService(pw, fd, "package", new String[] { packageName }); 3507 pw.println(); 3508 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3509 "-a", "package", packageName }); 3510 pw.println(); 3511 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3512 pw.println(); 3513 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3514 pw.println(); 3515 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3516 pw.println(); 3517 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3518 pw.flush(); 3519 } 3520 3521 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3522 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3523 IBinder service = ServiceManager.checkService(name); 3524 if (service == null) { 3525 pw.println(" (Service not found)"); 3526 return; 3527 } 3528 TransferPipe tp = null; 3529 try { 3530 pw.flush(); 3531 tp = new TransferPipe(); 3532 tp.setBufferPrefix(" "); 3533 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3534 tp.go(fd, 10000); 3535 } catch (Throwable e) { 3536 if (tp != null) { 3537 tp.kill(); 3538 } 3539 pw.println("Failure dumping service:"); 3540 e.printStackTrace(pw); 3541 } 3542 } 3543 3544 /** 3545 * Request that the system start watching for the calling process to exceed a pss 3546 * size as given here. Once called, the system will look for any occasions where it 3547 * sees the associated process with a larger pss size and, when this happens, automatically 3548 * pull a heap dump from it and allow the user to share the data. Note that this request 3549 * continues running even if the process is killed and restarted. To remove the watch, 3550 * use {@link #clearWatchHeapLimit()}. 3551 * 3552 * <p>This API only work if the calling process has been marked as 3553 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3554 * (userdebug or eng) build.</p> 3555 * 3556 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3557 * handle heap limit reports themselves.</p> 3558 * 3559 * @param pssSize The size in bytes to set the limit at. 3560 */ 3561 public void setWatchHeapLimit(long pssSize) { 3562 try { 3563 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3564 mContext.getPackageName()); 3565 } catch (RemoteException e) { 3566 throw e.rethrowFromSystemServer(); 3567 } 3568 } 3569 3570 /** 3571 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3572 * If your package has an activity handling this action, it will be launched with the 3573 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3574 * match the activty must support this action and a MIME type of "*/*". 3575 */ 3576 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3577 3578 /** 3579 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3580 */ 3581 public void clearWatchHeapLimit() { 3582 try { 3583 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3584 } catch (RemoteException e) { 3585 throw e.rethrowFromSystemServer(); 3586 } 3587 } 3588 3589 /** 3590 * @hide 3591 */ 3592 public void startLockTaskMode(int taskId) { 3593 try { 3594 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3595 } catch (RemoteException e) { 3596 throw e.rethrowFromSystemServer(); 3597 } 3598 } 3599 3600 /** 3601 * @hide 3602 */ 3603 public void stopLockTaskMode() { 3604 try { 3605 ActivityManagerNative.getDefault().stopLockTaskMode(); 3606 } catch (RemoteException e) { 3607 throw e.rethrowFromSystemServer(); 3608 } 3609 } 3610 3611 /** 3612 * Return whether currently in lock task mode. When in this mode 3613 * no new tasks can be created or switched to. 3614 * 3615 * @see Activity#startLockTask() 3616 * 3617 * @deprecated Use {@link #getLockTaskModeState} instead. 3618 */ 3619 @Deprecated 3620 public boolean isInLockTaskMode() { 3621 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3622 } 3623 3624 /** 3625 * Return the current state of task locking. The three possible outcomes 3626 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3627 * and {@link #LOCK_TASK_MODE_PINNED}. 3628 * 3629 * @see Activity#startLockTask() 3630 */ 3631 public int getLockTaskModeState() { 3632 try { 3633 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3634 } catch (RemoteException e) { 3635 throw e.rethrowFromSystemServer(); 3636 } 3637 } 3638 3639 /** 3640 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 3641 * thread can be a VR thread in a process at a time, and that thread may be subject to 3642 * restrictions on the amount of time it can run. 3643 * 3644 * To reset the VR thread for an application, a tid of 0 can be passed. 3645 * 3646 * @see android.os.Process#myTid() 3647 * @param tid tid of the VR thread 3648 */ 3649 public static void setVrThread(int tid) { 3650 try { 3651 ActivityManagerNative.getDefault().setVrThread(tid); 3652 } catch (RemoteException e) { 3653 // pass 3654 } 3655 } 3656 3657 /** 3658 * The AppTask allows you to manage your own application's tasks. 3659 * See {@link android.app.ActivityManager#getAppTasks()} 3660 */ 3661 public static class AppTask { 3662 private IAppTask mAppTaskImpl; 3663 3664 /** @hide */ 3665 public AppTask(IAppTask task) { 3666 mAppTaskImpl = task; 3667 } 3668 3669 /** 3670 * Finishes all activities in this task and removes it from the recent tasks list. 3671 */ 3672 public void finishAndRemoveTask() { 3673 try { 3674 mAppTaskImpl.finishAndRemoveTask(); 3675 } catch (RemoteException e) { 3676 throw e.rethrowFromSystemServer(); 3677 } 3678 } 3679 3680 /** 3681 * Get the RecentTaskInfo associated with this task. 3682 * 3683 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3684 */ 3685 public RecentTaskInfo getTaskInfo() { 3686 try { 3687 return mAppTaskImpl.getTaskInfo(); 3688 } catch (RemoteException e) { 3689 throw e.rethrowFromSystemServer(); 3690 } 3691 } 3692 3693 /** 3694 * Bring this task to the foreground. If it contains activities, they will be 3695 * brought to the foreground with it and their instances re-created if needed. 3696 * If it doesn't contain activities, the root activity of the task will be 3697 * re-launched. 3698 */ 3699 public void moveToFront() { 3700 try { 3701 mAppTaskImpl.moveToFront(); 3702 } catch (RemoteException e) { 3703 throw e.rethrowFromSystemServer(); 3704 } 3705 } 3706 3707 /** 3708 * Start an activity in this task. Brings the task to the foreground. If this task 3709 * is not currently active (that is, its id < 0), then a new activity for the given 3710 * Intent will be launched as the root of the task and the task brought to the 3711 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3712 * an activity to launch in a new task, then a new activity for the given Intent will 3713 * be launched on top of the task and the task brought to the foreground. If this 3714 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3715 * or would otherwise be launched in to a new task, then the activity not launched but 3716 * this task be brought to the foreground and a new intent delivered to the top 3717 * activity if appropriate. 3718 * 3719 * <p>In other words, you generally want to use an Intent here that does not specify 3720 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3721 * and let the system do the right thing.</p> 3722 * 3723 * @param intent The Intent describing the new activity to be launched on the task. 3724 * @param options Optional launch options. 3725 * 3726 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3727 */ 3728 public void startActivity(Context context, Intent intent, Bundle options) { 3729 ActivityThread thread = ActivityThread.currentActivityThread(); 3730 thread.getInstrumentation().execStartActivityFromAppTask(context, 3731 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3732 } 3733 3734 /** 3735 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3736 * Intent of this AppTask. 3737 * 3738 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3739 * be set; otherwise, it will be cleared. 3740 */ 3741 public void setExcludeFromRecents(boolean exclude) { 3742 try { 3743 mAppTaskImpl.setExcludeFromRecents(exclude); 3744 } catch (RemoteException e) { 3745 throw e.rethrowFromSystemServer(); 3746 } 3747 } 3748 } 3749} 3750