ActivityManager.java revision 1b5ea72b3cd946ae27e92743339f1fcb117a0520
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 android.util.Log; 35import com.android.internal.app.procstats.ProcessStats; 36import com.android.internal.os.TransferPipe; 37import com.android.internal.util.FastPrintWriter; 38 39import android.content.ComponentName; 40import android.content.Context; 41import android.content.Intent; 42import android.content.UriPermission; 43import android.content.pm.ApplicationInfo; 44import android.content.pm.ConfigurationInfo; 45import android.content.pm.IPackageDataObserver; 46import android.content.pm.PackageManager; 47import android.content.pm.ParceledListSlice; 48import android.content.pm.UserInfo; 49import android.content.res.Resources; 50import android.graphics.Bitmap; 51import android.graphics.Color; 52import android.graphics.Rect; 53import android.os.Bundle; 54import android.os.Debug; 55import android.os.Handler; 56import android.os.Parcel; 57import android.os.Parcelable; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.ServiceManager; 61import android.os.SystemProperties; 62import android.os.UserHandle; 63import android.text.TextUtils; 64import android.util.DisplayMetrics; 65import android.util.Size; 66import android.util.Slog; 67 68import org.xmlpull.v1.XmlSerializer; 69 70import java.io.FileDescriptor; 71import java.io.FileOutputStream; 72import java.io.IOException; 73import java.io.PrintWriter; 74import java.lang.annotation.Retention; 75import java.lang.annotation.RetentionPolicy; 76import java.util.ArrayList; 77import java.util.List; 78 79/** 80 * Interact with the overall activities running in the system. 81 */ 82public class ActivityManager { 83 private static String TAG = "ActivityManager"; 84 85 private static int gMaxRecentTasks = -1; 86 87 private final Context mContext; 88 private final Handler mHandler; 89 90 /** 91 * Defines acceptable types of bugreports. 92 * @hide 93 */ 94 @Retention(RetentionPolicy.SOURCE) 95 @IntDef({ 96 BUGREPORT_OPTION_FULL, 97 BUGREPORT_OPTION_INTERACTIVE, 98 BUGREPORT_OPTION_REMOTE 99 }) 100 public @interface BugreportMode {} 101 /** 102 * Takes a bugreport without user interference (and hence causing less 103 * interference to the system), but includes all sections. 104 * @hide 105 */ 106 public static final int BUGREPORT_OPTION_FULL = 0; 107 /** 108 * Allows user to monitor progress and enter additional data; might not include all 109 * sections. 110 * @hide 111 */ 112 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 113 /** 114 * Takes a bugreport requested remotely by administrator of the Device Owner app, 115 * not the device's user. 116 * @hide 117 */ 118 public static final int BUGREPORT_OPTION_REMOTE = 2; 119 120 /** 121 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 122 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 123 * uninstalled in lieu of the declaring one. The package named here must be 124 * signed with the same certificate as the one declaring the {@code <meta-data>}. 125 */ 126 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 127 128 /** 129 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 130 * @hide 131 */ 132 public static final int START_VOICE_HIDDEN_SESSION = -10; 133 134 /** 135 * Result for IActivityManager.startVoiceActivity: active session does not match 136 * the requesting token. 137 * @hide 138 */ 139 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 140 141 /** 142 * Result for IActivityManager.startActivity: trying to start a background user 143 * activity that shouldn't be displayed for all users. 144 * @hide 145 */ 146 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 147 148 /** 149 * Result for IActivityManager.startActivity: trying to start an activity under voice 150 * control when that activity does not support the VOICE category. 151 * @hide 152 */ 153 public static final int START_NOT_VOICE_COMPATIBLE = -7; 154 155 /** 156 * Result for IActivityManager.startActivity: an error where the 157 * start had to be canceled. 158 * @hide 159 */ 160 public static final int START_CANCELED = -6; 161 162 /** 163 * Result for IActivityManager.startActivity: an error where the 164 * thing being started is not an activity. 165 * @hide 166 */ 167 public static final int START_NOT_ACTIVITY = -5; 168 169 /** 170 * Result for IActivityManager.startActivity: an error where the 171 * caller does not have permission to start the activity. 172 * @hide 173 */ 174 public static final int START_PERMISSION_DENIED = -4; 175 176 /** 177 * Result for IActivityManager.startActivity: an error where the 178 * caller has requested both to forward a result and to receive 179 * a result. 180 * @hide 181 */ 182 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 183 184 /** 185 * Result for IActivityManager.startActivity: an error where the 186 * requested class is not found. 187 * @hide 188 */ 189 public static final int START_CLASS_NOT_FOUND = -2; 190 191 /** 192 * Result for IActivityManager.startActivity: an error where the 193 * given Intent could not be resolved to an activity. 194 * @hide 195 */ 196 public static final int START_INTENT_NOT_RESOLVED = -1; 197 198 /** 199 * Result for IActivityManaqer.startActivity: the activity was started 200 * successfully as normal. 201 * @hide 202 */ 203 public static final int START_SUCCESS = 0; 204 205 /** 206 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 207 * be executed if it is the recipient, and that is indeed the case. 208 * @hide 209 */ 210 public static final int START_RETURN_INTENT_TO_CALLER = 1; 211 212 /** 213 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 214 * a task was simply brought to the foreground. 215 * @hide 216 */ 217 public static final int START_TASK_TO_FRONT = 2; 218 219 /** 220 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 221 * the given Intent was given to the existing top activity. 222 * @hide 223 */ 224 public static final int START_DELIVERED_TO_TOP = 3; 225 226 /** 227 * Result for IActivityManaqer.startActivity: request was canceled because 228 * app switches are temporarily canceled to ensure the user's last request 229 * (such as pressing home) is performed. 230 * @hide 231 */ 232 public static final int START_SWITCHES_CANCELED = 4; 233 234 /** 235 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 236 * while in Lock Task Mode. 237 * @hide 238 */ 239 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 240 241 /** 242 * Flag for IActivityManaqer.startActivity: do special start mode where 243 * a new activity is launched only if it is needed. 244 * @hide 245 */ 246 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 247 248 /** 249 * Flag for IActivityManaqer.startActivity: launch the app for 250 * debugging. 251 * @hide 252 */ 253 public static final int START_FLAG_DEBUG = 1<<1; 254 255 /** 256 * Flag for IActivityManaqer.startActivity: launch the app for 257 * allocation tracking. 258 * @hide 259 */ 260 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 261 262 /** 263 * Flag for IActivityManaqer.startActivity: launch the app with 264 * native debugging support. 265 * @hide 266 */ 267 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 268 269 /** 270 * Result for IActivityManaqer.broadcastIntent: success! 271 * @hide 272 */ 273 public static final int BROADCAST_SUCCESS = 0; 274 275 /** 276 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 277 * a sticky intent without appropriate permission. 278 * @hide 279 */ 280 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 281 282 /** 283 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 284 * to a stopped user. Fail. 285 * @hide 286 */ 287 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 288 289 /** 290 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 291 * for a sendBroadcast operation. 292 * @hide 293 */ 294 public static final int INTENT_SENDER_BROADCAST = 1; 295 296 /** 297 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 298 * for a startActivity operation. 299 * @hide 300 */ 301 public static final int INTENT_SENDER_ACTIVITY = 2; 302 303 /** 304 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 305 * for an activity result operation. 306 * @hide 307 */ 308 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 309 310 /** 311 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 312 * for a startService operation. 313 * @hide 314 */ 315 public static final int INTENT_SENDER_SERVICE = 4; 316 317 /** @hide User operation call: success! */ 318 public static final int USER_OP_SUCCESS = 0; 319 320 /** @hide User operation call: given user id is not known. */ 321 public static final int USER_OP_UNKNOWN_USER = -1; 322 323 /** @hide User operation call: given user id is the current user, can't be stopped. */ 324 public static final int USER_OP_IS_CURRENT = -2; 325 326 /** @hide User operation call: system user can't be stopped. */ 327 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 328 329 /** @hide User operation call: one of related users cannot be stopped. */ 330 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 331 332 /** @hide Process does not exist. */ 333 public static final int PROCESS_STATE_NONEXISTENT = -1; 334 335 /** @hide Process is a persistent system process. */ 336 public static final int PROCESS_STATE_PERSISTENT = 0; 337 338 /** @hide Process is a persistent system process and is doing UI. */ 339 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 340 341 /** @hide Process is hosting the current top activities. Note that this covers 342 * all activities that are visible to the user. */ 343 public static final int PROCESS_STATE_TOP = 2; 344 345 /** @hide Process is hosting a foreground service due to a system binding. */ 346 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 347 348 /** @hide Process is hosting a foreground service. */ 349 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 350 351 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 352 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 353 354 /** @hide Process is important to the user, and something they are aware of. */ 355 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 356 357 /** @hide Process is important to the user, but not something they are aware of. */ 358 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 359 360 /** @hide Process is in the background running a backup/restore operation. */ 361 public static final int PROCESS_STATE_BACKUP = 8; 362 363 /** @hide Process is in the background, but it can't restore its state so we want 364 * to try to avoid killing it. */ 365 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 366 367 /** @hide Process is in the background running a service. Unlike oom_adj, this level 368 * is used for both the normal running in background state and the executing 369 * operations state. */ 370 public static final int PROCESS_STATE_SERVICE = 10; 371 372 /** @hide Process is in the background running a receiver. Note that from the 373 * perspective of oom_adj receivers run at a higher foreground level, but for our 374 * prioritization here that is not necessary and putting them below services means 375 * many fewer changes in some process states as they receive broadcasts. */ 376 public static final int PROCESS_STATE_RECEIVER = 11; 377 378 /** @hide Process is in the background but hosts the home activity. */ 379 public static final int PROCESS_STATE_HOME = 12; 380 381 /** @hide Process is in the background but hosts the last shown activity. */ 382 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 383 384 /** @hide Process is being cached for later use and contains activities. */ 385 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 386 387 /** @hide Process is being cached for later use and is a client of another cached 388 * process that contains activities. */ 389 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 390 391 /** @hide Process is being cached for later use and is empty. */ 392 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 393 394 /** @hide The lowest process state number */ 395 public static final int MIN_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 396 397 /** @hide The highest process state number */ 398 public static final int MAX_PROCESS_STATE = PROCESS_STATE_CACHED_EMPTY; 399 400 /** @hide Should this process state be considered a background state? */ 401 public static final boolean isProcStateBackground(int procState) { 402 return procState >= PROCESS_STATE_BACKUP; 403 } 404 405 /** @hide requestType for assist context: only basic information. */ 406 public static final int ASSIST_CONTEXT_BASIC = 0; 407 408 /** @hide requestType for assist context: generate full AssistStructure. */ 409 public static final int ASSIST_CONTEXT_FULL = 1; 410 411 /** @hide Flag for registerUidObserver: report changes in process state. */ 412 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 413 414 /** @hide Flag for registerUidObserver: report uid gone. */ 415 public static final int UID_OBSERVER_GONE = 1<<1; 416 417 /** @hide Flag for registerUidObserver: report uid has become idle. */ 418 public static final int UID_OBSERVER_IDLE = 1<<2; 419 420 /** @hide Flag for registerUidObserver: report uid has become active. */ 421 public static final int UID_OBSERVER_ACTIVE = 1<<3; 422 423 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 424 public static final int APP_START_MODE_NORMAL = 0; 425 426 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 427 public static final int APP_START_MODE_DELAYED = 1; 428 429 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 430 * launches. */ 431 public static final int APP_START_MODE_DISABLED = 2; 432 433 /** 434 * Lock task mode is not active. 435 */ 436 public static final int LOCK_TASK_MODE_NONE = 0; 437 438 /** 439 * Full lock task mode is active. 440 */ 441 public static final int LOCK_TASK_MODE_LOCKED = 1; 442 443 /** 444 * App pinning mode is active. 445 */ 446 public static final int LOCK_TASK_MODE_PINNED = 2; 447 448 Point mAppTaskThumbnailSize; 449 450 /*package*/ ActivityManager(Context context, Handler handler) { 451 mContext = context; 452 mHandler = handler; 453 } 454 455 /** 456 * Screen compatibility mode: the application most always run in 457 * compatibility mode. 458 * @hide 459 */ 460 public static final int COMPAT_MODE_ALWAYS = -1; 461 462 /** 463 * Screen compatibility mode: the application can never run in 464 * compatibility mode. 465 * @hide 466 */ 467 public static final int COMPAT_MODE_NEVER = -2; 468 469 /** 470 * Screen compatibility mode: unknown. 471 * @hide 472 */ 473 public static final int COMPAT_MODE_UNKNOWN = -3; 474 475 /** 476 * Screen compatibility mode: the application currently has compatibility 477 * mode disabled. 478 * @hide 479 */ 480 public static final int COMPAT_MODE_DISABLED = 0; 481 482 /** 483 * Screen compatibility mode: the application currently has compatibility 484 * mode enabled. 485 * @hide 486 */ 487 public static final int COMPAT_MODE_ENABLED = 1; 488 489 /** 490 * Screen compatibility mode: request to toggle the application's 491 * compatibility mode. 492 * @hide 493 */ 494 public static final int COMPAT_MODE_TOGGLE = 2; 495 496 /** @hide */ 497 public static class StackId { 498 /** Invalid stack ID. */ 499 public static final int INVALID_STACK_ID = -1; 500 501 /** First static stack ID. */ 502 public static final int FIRST_STATIC_STACK_ID = 0; 503 504 /** Home activity stack ID. */ 505 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 506 507 /** ID of stack where fullscreen activities are normally launched into. */ 508 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 509 510 /** ID of stack where freeform/resized activities are normally launched into. */ 511 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 512 513 /** ID of stack that occupies a dedicated region of the screen. */ 514 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 515 516 /** ID of stack that always on top (always visible) when it exist. */ 517 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 518 519 /** Last static stack stack ID. */ 520 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 521 522 /** Start of ID range used by stacks that are created dynamically. */ 523 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 524 525 public static boolean isStaticStack(int stackId) { 526 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 527 } 528 529 /** 530 * Returns true if the activities contained in the input stack display a shadow around 531 * their border. 532 */ 533 public static boolean hasWindowShadow(int stackId) { 534 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 535 } 536 537 /** 538 * Returns true if the activities contained in the input stack display a decor view. 539 */ 540 public static boolean hasWindowDecor(int stackId) { 541 return stackId == FREEFORM_WORKSPACE_STACK_ID; 542 } 543 544 /** 545 * Returns true if the tasks contained in the stack can be resized independently of the 546 * stack. 547 */ 548 public static boolean isTaskResizeAllowed(int stackId) { 549 return stackId == FREEFORM_WORKSPACE_STACK_ID; 550 } 551 552 /** Returns true if the task bounds should persist across power cycles. */ 553 public static boolean persistTaskBounds(int stackId) { 554 return stackId == FREEFORM_WORKSPACE_STACK_ID; 555 } 556 557 /** 558 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 559 */ 560 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 561 return stackId == PINNED_STACK_ID; 562 } 563 564 /** 565 * Returns true if we try to maintain focus in the current stack when the top activity 566 * finishes. 567 */ 568 public static boolean keepFocusInStackIfPossible(int stackId) { 569 return stackId == FREEFORM_WORKSPACE_STACK_ID 570 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 571 } 572 573 /** 574 * Returns true if Stack size is affected by the docked stack changing size. 575 */ 576 public static boolean isResizeableByDockedStack(int stackId) { 577 return isStaticStack(stackId) && 578 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 579 } 580 581 /** 582 * Returns true if the size of tasks in the input stack are affected by the docked stack 583 * changing size. 584 */ 585 public static boolean isTaskResizeableByDockedStack(int stackId) { 586 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 587 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 588 } 589 590 /** 591 * Returns true if the windows of tasks being moved to the target stack from the source 592 * stack should be replaced, meaning that window manager will keep the old window around 593 * until the new is ready. 594 */ 595 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 596 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 597 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 598 } 599 600 /** 601 * Return whether a stackId is a stack containing floating windows. Floating windows 602 * are laid out differently as they are allowed to extend past the display bounds 603 * without overscan insets. 604 */ 605 public static boolean tasksAreFloating(int stackId) { 606 return stackId == FREEFORM_WORKSPACE_STACK_ID 607 || stackId == PINNED_STACK_ID; 608 } 609 610 /** 611 * Returns true if animation specs should be constructed for app transition that moves 612 * the task to the specified stack. 613 */ 614 public static boolean useAnimationSpecForAppTransition(int stackId) { 615 616 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 617 // reboots. 618 return stackId == FREEFORM_WORKSPACE_STACK_ID 619 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 620 || stackId == INVALID_STACK_ID; 621 } 622 623 /** Returns true if the windows in the stack can receive input keys. */ 624 public static boolean canReceiveKeys(int stackId) { 625 return stackId != PINNED_STACK_ID; 626 } 627 628 /** 629 * Returns true if the stack can be visible above lockscreen. 630 */ 631 public static boolean isAllowedOverLockscreen(int stackId) { 632 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 633 } 634 635 public static boolean isAlwaysOnTop(int stackId) { 636 return stackId == PINNED_STACK_ID; 637 } 638 639 /** 640 * Returns true if the top task in the task is allowed to return home when finished and 641 * there are other tasks in the stack. 642 */ 643 public static boolean allowTopTaskToReturnHome(int stackId) { 644 return stackId != PINNED_STACK_ID; 645 } 646 647 /** 648 * Returns true if the stack should be resized to match the bounds specified by 649 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 650 */ 651 public static boolean resizeStackWithLaunchBounds(int stackId) { 652 return stackId == PINNED_STACK_ID; 653 } 654 655 /** 656 * Returns true if any visible windows belonging to apps in this stack should be kept on 657 * screen when the app is killed due to something like the low memory killer. 658 */ 659 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 660 return stackId != PINNED_STACK_ID; 661 } 662 663 /** 664 * Returns true if the backdrop on the client side should match the frame of the window. 665 * Returns false, if the backdrop should be fullscreen. 666 */ 667 public static boolean useWindowFrameForBackdrop(int stackId) { 668 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 669 } 670 671 /** 672 * Returns true if a window from the specified stack with {@param stackId} are normally 673 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 674 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 675 * etc. 676 */ 677 public static boolean normallyFullscreenWindows(int stackId) { 678 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 679 && stackId != DOCKED_STACK_ID; 680 } 681 682 /** 683 * Returns true if the input stack id should only be present on a device that supports 684 * multi-window mode. 685 * @see android.app.ActivityManager#supportsMultiWindow 686 */ 687 public static boolean isMultiWindowStack(int stackId) { 688 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 689 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 690 } 691 692 /** 693 * Returns true if activities contained in this stack can request visible behind by 694 * calling {@link Activity#requestVisibleBehind}. 695 */ 696 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 697 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 698 } 699 700 /** 701 * Returns true if this stack may be scaled without resizing, 702 * and windows within may need to be configured as such. 703 */ 704 public static boolean windowsAreScaleable(int stackId) { 705 return stackId == PINNED_STACK_ID; 706 } 707 } 708 709 /** 710 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 711 * specifies the position of the created docked stack at the top half of the screen if 712 * in portrait mode or at the left half of the screen if in landscape mode. 713 * @hide 714 */ 715 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 716 717 /** 718 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 719 * specifies the position of the created docked stack at the bottom half of the screen if 720 * in portrait mode or at the right half of the screen if in landscape mode. 721 * @hide 722 */ 723 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 724 725 /** 726 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 727 * that the resize doesn't need to preserve the window, and can be skipped if bounds 728 * is unchanged. This mode is used by window manager in most cases. 729 * @hide 730 */ 731 public static final int RESIZE_MODE_SYSTEM = 0; 732 733 /** 734 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 735 * that the resize should preserve the window if possible. 736 * @hide 737 */ 738 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 739 740 /** 741 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 742 * that the resize should be performed even if the bounds appears unchanged. 743 * @hide 744 */ 745 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 746 747 /** 748 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 749 * manager during a screen rotation. 750 * @hide 751 */ 752 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 753 754 /** 755 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 756 * resize is due to a drag action. 757 * @hide 758 */ 759 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 760 761 /** 762 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 763 * that the resize should preserve the window if possible, and should not be skipped 764 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 765 * is ending. 766 * @hide 767 */ 768 public static final int RESIZE_MODE_USER_FORCED = 769 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 770 771 /** @hide */ 772 public int getFrontActivityScreenCompatMode() { 773 try { 774 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 775 } catch (RemoteException e) { 776 throw e.rethrowFromSystemServer(); 777 } 778 } 779 780 /** @hide */ 781 public void setFrontActivityScreenCompatMode(int mode) { 782 try { 783 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 784 } catch (RemoteException e) { 785 throw e.rethrowFromSystemServer(); 786 } 787 } 788 789 /** @hide */ 790 public int getPackageScreenCompatMode(String packageName) { 791 try { 792 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 793 } catch (RemoteException e) { 794 throw e.rethrowFromSystemServer(); 795 } 796 } 797 798 /** @hide */ 799 public void setPackageScreenCompatMode(String packageName, int mode) { 800 try { 801 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 802 } catch (RemoteException e) { 803 throw e.rethrowFromSystemServer(); 804 } 805 } 806 807 /** @hide */ 808 public boolean getPackageAskScreenCompat(String packageName) { 809 try { 810 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 811 } catch (RemoteException e) { 812 throw e.rethrowFromSystemServer(); 813 } 814 } 815 816 /** @hide */ 817 public void setPackageAskScreenCompat(String packageName, boolean ask) { 818 try { 819 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 820 } catch (RemoteException e) { 821 throw e.rethrowFromSystemServer(); 822 } 823 } 824 825 /** 826 * Return the approximate per-application memory class of the current 827 * device. This gives you an idea of how hard a memory limit you should 828 * impose on your application to let the overall system work best. The 829 * returned value is in megabytes; the baseline Android memory class is 830 * 16 (which happens to be the Java heap limit of those devices); some 831 * device with more memory may return 24 or even higher numbers. 832 */ 833 public int getMemoryClass() { 834 return staticGetMemoryClass(); 835 } 836 837 /** @hide */ 838 static public int staticGetMemoryClass() { 839 // Really brain dead right now -- just take this from the configured 840 // vm heap size, and assume it is in megabytes and thus ends with "m". 841 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 842 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 843 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 844 } 845 return staticGetLargeMemoryClass(); 846 } 847 848 /** 849 * Return the approximate per-application memory class of the current 850 * device when an application is running with a large heap. This is the 851 * space available for memory-intensive applications; most applications 852 * should not need this amount of memory, and should instead stay with the 853 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 854 * This may be the same size as {@link #getMemoryClass()} on memory 855 * constrained devices, or it may be significantly larger on devices with 856 * a large amount of available RAM. 857 * 858 * <p>The is the size of the application's Dalvik heap if it has 859 * specified <code>android:largeHeap="true"</code> in its manifest. 860 */ 861 public int getLargeMemoryClass() { 862 return staticGetLargeMemoryClass(); 863 } 864 865 /** @hide */ 866 static public int staticGetLargeMemoryClass() { 867 // Really brain dead right now -- just take this from the configured 868 // vm heap size, and assume it is in megabytes and thus ends with "m". 869 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 870 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 871 } 872 873 /** 874 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 875 * is ultimately up to the device configuration, but currently it generally means 876 * something in the class of a 512MB device with about a 800x480 or less screen. 877 * This is mostly intended to be used by apps to determine whether they should turn 878 * off certain features that require more RAM. 879 */ 880 public boolean isLowRamDevice() { 881 return isLowRamDeviceStatic(); 882 } 883 884 /** @hide */ 885 public static boolean isLowRamDeviceStatic() { 886 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 887 } 888 889 /** 890 * Used by persistent processes to determine if they are running on a 891 * higher-end device so should be okay using hardware drawing acceleration 892 * (which tends to consume a lot more RAM). 893 * @hide 894 */ 895 static public boolean isHighEndGfx() { 896 return !isLowRamDeviceStatic() && 897 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 898 } 899 900 /** 901 * Return the maximum number of recents entries that we will maintain and show. 902 * @hide 903 */ 904 static public int getMaxRecentTasksStatic() { 905 if (gMaxRecentTasks < 0) { 906 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 907 } 908 return gMaxRecentTasks; 909 } 910 911 /** 912 * Return the default limit on the number of recents that an app can make. 913 * @hide 914 */ 915 static public int getDefaultAppRecentsLimitStatic() { 916 return getMaxRecentTasksStatic() / 6; 917 } 918 919 /** 920 * Return the maximum limit on the number of recents that an app can make. 921 * @hide 922 */ 923 static public int getMaxAppRecentsLimitStatic() { 924 return getMaxRecentTasksStatic() / 2; 925 } 926 927 /** 928 * Returns true if the system supports at least one form of multi-window. 929 * E.g. freeform, split-screen, picture-in-picture. 930 * @hide 931 */ 932 static public boolean supportsMultiWindow() { 933 return !isLowRamDeviceStatic() 934 && Resources.getSystem().getBoolean( 935 com.android.internal.R.bool.config_supportsMultiWindow); 936 } 937 938 /** 939 * Information you can set and retrieve about the current activity within the recent task list. 940 */ 941 public static class TaskDescription implements Parcelable { 942 /** @hide */ 943 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 944 private static final String ATTR_TASKDESCRIPTIONLABEL = 945 ATTR_TASKDESCRIPTION_PREFIX + "label"; 946 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 947 ATTR_TASKDESCRIPTION_PREFIX + "color"; 948 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 949 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 950 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 951 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 952 953 private String mLabel; 954 private Bitmap mIcon; 955 private String mIconFilename; 956 private int mColorPrimary; 957 private int mColorBackground; 958 959 /** 960 * Creates the TaskDescription to the specified values. 961 * 962 * @param label A label and description of the current state of this task. 963 * @param icon An icon that represents the current state of this task. 964 * @param colorPrimary A color to override the theme's primary color. This color must be 965 * opaque. 966 */ 967 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 968 this(label, icon, null, colorPrimary, 0); 969 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 970 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 971 } 972 } 973 974 /** 975 * Creates the TaskDescription to the specified values. 976 * 977 * @param label A label and description of the current state of this activity. 978 * @param icon An icon that represents the current state of this activity. 979 */ 980 public TaskDescription(String label, Bitmap icon) { 981 this(label, icon, null, 0, 0); 982 } 983 984 /** 985 * Creates the TaskDescription to the specified values. 986 * 987 * @param label A label and description of the current state of this activity. 988 */ 989 public TaskDescription(String label) { 990 this(label, null, null, 0, 0); 991 } 992 993 /** 994 * Creates an empty TaskDescription. 995 */ 996 public TaskDescription() { 997 this(null, null, null, 0, 0); 998 } 999 1000 /** @hide */ 1001 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1002 int colorBackground) { 1003 mLabel = label; 1004 mIcon = icon; 1005 mIconFilename = iconFilename; 1006 mColorPrimary = colorPrimary; 1007 mColorBackground = colorBackground; 1008 } 1009 1010 /** 1011 * Creates a copy of another TaskDescription. 1012 */ 1013 public TaskDescription(TaskDescription td) { 1014 copyFrom(td); 1015 } 1016 1017 /** 1018 * Copies this the values from another TaskDescription. 1019 * @hide 1020 */ 1021 public void copyFrom(TaskDescription other) { 1022 mLabel = other.mLabel; 1023 mIcon = other.mIcon; 1024 mIconFilename = other.mIconFilename; 1025 mColorPrimary = other.mColorPrimary; 1026 mColorBackground = other.mColorBackground; 1027 } 1028 1029 private TaskDescription(Parcel source) { 1030 readFromParcel(source); 1031 } 1032 1033 /** 1034 * Sets the label for this task description. 1035 * @hide 1036 */ 1037 public void setLabel(String label) { 1038 mLabel = label; 1039 } 1040 1041 /** 1042 * Sets the primary color for this task description. 1043 * @hide 1044 */ 1045 public void setPrimaryColor(int primaryColor) { 1046 // Ensure that the given color is valid 1047 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1048 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1049 } 1050 mColorPrimary = primaryColor; 1051 } 1052 1053 /** 1054 * Sets the background color for this task description. 1055 * @hide 1056 */ 1057 public void setBackgroundColor(int backgroundColor) { 1058 // Ensure that the given color is valid 1059 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1060 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1061 } 1062 mColorBackground = backgroundColor; 1063 } 1064 1065 /** 1066 * Sets the icon for this task description. 1067 * @hide 1068 */ 1069 public void setIcon(Bitmap icon) { 1070 mIcon = icon; 1071 } 1072 1073 /** 1074 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1075 * bitmap. 1076 * @hide 1077 */ 1078 public void setIconFilename(String iconFilename) { 1079 mIconFilename = iconFilename; 1080 mIcon = null; 1081 } 1082 1083 /** 1084 * @return The label and description of the current state of this task. 1085 */ 1086 public String getLabel() { 1087 return mLabel; 1088 } 1089 1090 /** 1091 * @return The icon that represents the current state of this task. 1092 */ 1093 public Bitmap getIcon() { 1094 if (mIcon != null) { 1095 return mIcon; 1096 } 1097 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1098 } 1099 1100 /** @hide */ 1101 public String getIconFilename() { 1102 return mIconFilename; 1103 } 1104 1105 /** @hide */ 1106 public Bitmap getInMemoryIcon() { 1107 return mIcon; 1108 } 1109 1110 /** @hide */ 1111 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1112 if (iconFilename != null) { 1113 try { 1114 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1115 userId); 1116 } catch (RemoteException e) { 1117 throw e.rethrowFromSystemServer(); 1118 } 1119 } 1120 return null; 1121 } 1122 1123 /** 1124 * @return The color override on the theme's primary color. 1125 */ 1126 public int getPrimaryColor() { 1127 return mColorPrimary; 1128 } 1129 1130 /** 1131 * @return The background color. 1132 * @hide 1133 */ 1134 public int getBackgroundColor() { 1135 return mColorBackground; 1136 } 1137 1138 /** @hide */ 1139 public void saveToXml(XmlSerializer out) throws IOException { 1140 if (mLabel != null) { 1141 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1142 } 1143 if (mColorPrimary != 0) { 1144 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1145 Integer.toHexString(mColorPrimary)); 1146 } 1147 if (mColorBackground != 0) { 1148 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1149 Integer.toHexString(mColorBackground)); 1150 } 1151 if (mIconFilename != null) { 1152 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1153 } 1154 } 1155 1156 /** @hide */ 1157 public void restoreFromXml(String attrName, String attrValue) { 1158 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1159 setLabel(attrValue); 1160 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1161 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1162 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1163 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1164 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1165 setIconFilename(attrValue); 1166 } 1167 } 1168 1169 @Override 1170 public int describeContents() { 1171 return 0; 1172 } 1173 1174 @Override 1175 public void writeToParcel(Parcel dest, int flags) { 1176 if (mLabel == null) { 1177 dest.writeInt(0); 1178 } else { 1179 dest.writeInt(1); 1180 dest.writeString(mLabel); 1181 } 1182 if (mIcon == null) { 1183 dest.writeInt(0); 1184 } else { 1185 dest.writeInt(1); 1186 mIcon.writeToParcel(dest, 0); 1187 } 1188 dest.writeInt(mColorPrimary); 1189 dest.writeInt(mColorBackground); 1190 if (mIconFilename == null) { 1191 dest.writeInt(0); 1192 } else { 1193 dest.writeInt(1); 1194 dest.writeString(mIconFilename); 1195 } 1196 } 1197 1198 public void readFromParcel(Parcel source) { 1199 mLabel = source.readInt() > 0 ? source.readString() : null; 1200 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1201 mColorPrimary = source.readInt(); 1202 mColorBackground = source.readInt(); 1203 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1204 } 1205 1206 public static final Creator<TaskDescription> CREATOR 1207 = new Creator<TaskDescription>() { 1208 public TaskDescription createFromParcel(Parcel source) { 1209 return new TaskDescription(source); 1210 } 1211 public TaskDescription[] newArray(int size) { 1212 return new TaskDescription[size]; 1213 } 1214 }; 1215 1216 @Override 1217 public String toString() { 1218 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1219 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1220 " colorBackground: " + mColorBackground; 1221 } 1222 } 1223 1224 /** 1225 * Information you can retrieve about tasks that the user has most recently 1226 * started or visited. 1227 */ 1228 public static class RecentTaskInfo implements Parcelable { 1229 /** 1230 * If this task is currently running, this is the identifier for it. 1231 * If it is not running, this will be -1. 1232 */ 1233 public int id; 1234 1235 /** 1236 * The true identifier of this task, valid even if it is not running. 1237 */ 1238 public int persistentId; 1239 1240 /** 1241 * The original Intent used to launch the task. You can use this 1242 * Intent to re-launch the task (if it is no longer running) or bring 1243 * the current task to the front. 1244 */ 1245 public Intent baseIntent; 1246 1247 /** 1248 * If this task was started from an alias, this is the actual 1249 * activity component that was initially started; the component of 1250 * the baseIntent in this case is the name of the actual activity 1251 * implementation that the alias referred to. Otherwise, this is null. 1252 */ 1253 public ComponentName origActivity; 1254 1255 /** 1256 * The actual activity component that started the task. 1257 * @hide 1258 */ 1259 @Nullable 1260 public ComponentName realActivity; 1261 1262 /** 1263 * Description of the task's last state. 1264 */ 1265 public CharSequence description; 1266 1267 /** 1268 * The id of the ActivityStack this Task was on most recently. 1269 * @hide 1270 */ 1271 public int stackId; 1272 1273 /** 1274 * The id of the user the task was running as. 1275 * @hide 1276 */ 1277 public int userId; 1278 1279 /** 1280 * The first time this task was active. 1281 * @hide 1282 */ 1283 public long firstActiveTime; 1284 1285 /** 1286 * The last time this task was active. 1287 * @hide 1288 */ 1289 public long lastActiveTime; 1290 1291 /** 1292 * The recent activity values for the highest activity in the stack to have set the values. 1293 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1294 */ 1295 public TaskDescription taskDescription; 1296 1297 /** 1298 * Task affiliation for grouping with other tasks. 1299 */ 1300 public int affiliatedTaskId; 1301 1302 /** 1303 * Task affiliation color of the source task with the affiliated task id. 1304 * 1305 * @hide 1306 */ 1307 public int affiliatedTaskColor; 1308 1309 /** 1310 * The component launched as the first activity in the task. 1311 * This can be considered the "application" of this task. 1312 */ 1313 public ComponentName baseActivity; 1314 1315 /** 1316 * The activity component at the top of the history stack of the task. 1317 * This is what the user is currently doing. 1318 */ 1319 public ComponentName topActivity; 1320 1321 /** 1322 * Number of activities in this task. 1323 */ 1324 public int numActivities; 1325 1326 /** 1327 * The bounds of the task. 1328 * @hide 1329 */ 1330 public Rect bounds; 1331 1332 /** 1333 * True if the task can go in the docked stack. 1334 * @hide 1335 */ 1336 public boolean isDockable; 1337 1338 /** 1339 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1340 * @hide 1341 */ 1342 public int resizeMode; 1343 1344 public RecentTaskInfo() { 1345 } 1346 1347 @Override 1348 public int describeContents() { 1349 return 0; 1350 } 1351 1352 @Override 1353 public void writeToParcel(Parcel dest, int flags) { 1354 dest.writeInt(id); 1355 dest.writeInt(persistentId); 1356 if (baseIntent != null) { 1357 dest.writeInt(1); 1358 baseIntent.writeToParcel(dest, 0); 1359 } else { 1360 dest.writeInt(0); 1361 } 1362 ComponentName.writeToParcel(origActivity, dest); 1363 ComponentName.writeToParcel(realActivity, dest); 1364 TextUtils.writeToParcel(description, dest, 1365 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1366 if (taskDescription != null) { 1367 dest.writeInt(1); 1368 taskDescription.writeToParcel(dest, 0); 1369 } else { 1370 dest.writeInt(0); 1371 } 1372 dest.writeInt(stackId); 1373 dest.writeInt(userId); 1374 dest.writeLong(firstActiveTime); 1375 dest.writeLong(lastActiveTime); 1376 dest.writeInt(affiliatedTaskId); 1377 dest.writeInt(affiliatedTaskColor); 1378 ComponentName.writeToParcel(baseActivity, dest); 1379 ComponentName.writeToParcel(topActivity, dest); 1380 dest.writeInt(numActivities); 1381 if (bounds != null) { 1382 dest.writeInt(1); 1383 bounds.writeToParcel(dest, 0); 1384 } else { 1385 dest.writeInt(0); 1386 } 1387 dest.writeInt(isDockable ? 1 : 0); 1388 dest.writeInt(resizeMode); 1389 } 1390 1391 public void readFromParcel(Parcel source) { 1392 id = source.readInt(); 1393 persistentId = source.readInt(); 1394 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1395 origActivity = ComponentName.readFromParcel(source); 1396 realActivity = ComponentName.readFromParcel(source); 1397 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1398 taskDescription = source.readInt() > 0 ? 1399 TaskDescription.CREATOR.createFromParcel(source) : null; 1400 stackId = source.readInt(); 1401 userId = source.readInt(); 1402 firstActiveTime = source.readLong(); 1403 lastActiveTime = source.readLong(); 1404 affiliatedTaskId = source.readInt(); 1405 affiliatedTaskColor = source.readInt(); 1406 baseActivity = ComponentName.readFromParcel(source); 1407 topActivity = ComponentName.readFromParcel(source); 1408 numActivities = source.readInt(); 1409 bounds = source.readInt() > 0 ? 1410 Rect.CREATOR.createFromParcel(source) : null; 1411 isDockable = source.readInt() == 1; 1412 resizeMode = source.readInt(); 1413 } 1414 1415 public static final Creator<RecentTaskInfo> CREATOR 1416 = new Creator<RecentTaskInfo>() { 1417 public RecentTaskInfo createFromParcel(Parcel source) { 1418 return new RecentTaskInfo(source); 1419 } 1420 public RecentTaskInfo[] newArray(int size) { 1421 return new RecentTaskInfo[size]; 1422 } 1423 }; 1424 1425 private RecentTaskInfo(Parcel source) { 1426 readFromParcel(source); 1427 } 1428 } 1429 1430 /** 1431 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1432 * that have set their 1433 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1434 */ 1435 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1436 1437 /** 1438 * Provides a list that does not contain any 1439 * recent tasks that currently are not available to the user. 1440 */ 1441 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1442 1443 /** 1444 * Provides a list that contains recent tasks for all 1445 * profiles of a user. 1446 * @hide 1447 */ 1448 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1449 1450 /** 1451 * Ignores all tasks that are on the home stack. 1452 * @hide 1453 */ 1454 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1455 1456 /** 1457 * Ignores the top task in the docked stack. 1458 * @hide 1459 */ 1460 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1461 1462 /** 1463 * Ignores all tasks that are on the pinned stack. 1464 * @hide 1465 */ 1466 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1467 1468 /** 1469 * <p></p>Return a list of the tasks that the user has recently launched, with 1470 * the most recent being first and older ones after in order. 1471 * 1472 * <p><b>Note: this method is only intended for debugging and presenting 1473 * task management user interfaces</b>. This should never be used for 1474 * core logic in an application, such as deciding between different 1475 * behaviors based on the information found here. Such uses are 1476 * <em>not</em> supported, and will likely break in the future. For 1477 * example, if multiple applications can be actively running at the 1478 * same time, assumptions made about the meaning of the data here for 1479 * purposes of control flow will be incorrect.</p> 1480 * 1481 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1482 * no longer available to third party applications: the introduction of 1483 * document-centric recents means 1484 * it can leak personal information to the caller. For backwards compatibility, 1485 * it will still return a small subset of its data: at least the caller's 1486 * own tasks (though see {@link #getAppTasks()} for the correct supported 1487 * way to retrieve that information), and possibly some other tasks 1488 * such as home that are known to not be sensitive. 1489 * 1490 * @param maxNum The maximum number of entries to return in the list. The 1491 * actual number returned may be smaller, depending on how many tasks the 1492 * user has started and the maximum number the system can remember. 1493 * @param flags Information about what to return. May be any combination 1494 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1495 * 1496 * @return Returns a list of RecentTaskInfo records describing each of 1497 * the recent tasks. 1498 */ 1499 @Deprecated 1500 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1501 throws SecurityException { 1502 try { 1503 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1504 flags, UserHandle.myUserId()); 1505 } catch (RemoteException e) { 1506 throw e.rethrowFromSystemServer(); 1507 } 1508 } 1509 1510 /** 1511 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1512 * specific user. It requires holding 1513 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1514 * @param maxNum The maximum number of entries to return in the list. The 1515 * actual number returned may be smaller, depending on how many tasks the 1516 * user has started and the maximum number the system can remember. 1517 * @param flags Information about what to return. May be any combination 1518 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1519 * 1520 * @return Returns a list of RecentTaskInfo records describing each of 1521 * the recent tasks. Most recently activated tasks go first. 1522 * 1523 * @hide 1524 */ 1525 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1526 throws SecurityException { 1527 try { 1528 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1529 flags, userId); 1530 } catch (RemoteException e) { 1531 throw e.rethrowFromSystemServer(); 1532 } 1533 } 1534 1535 /** 1536 * Information you can retrieve about a particular task that is currently 1537 * "running" in the system. Note that a running task does not mean the 1538 * given task actually has a process it is actively running in; it simply 1539 * means that the user has gone to it and never closed it, but currently 1540 * the system may have killed its process and is only holding on to its 1541 * last state in order to restart it when the user returns. 1542 */ 1543 public static class RunningTaskInfo implements Parcelable { 1544 /** 1545 * A unique identifier for this task. 1546 */ 1547 public int id; 1548 1549 /** 1550 * The stack that currently contains this task. 1551 * @hide 1552 */ 1553 public int stackId; 1554 1555 /** 1556 * The component launched as the first activity in the task. This can 1557 * be considered the "application" of this task. 1558 */ 1559 public ComponentName baseActivity; 1560 1561 /** 1562 * The activity component at the top of the history stack of the task. 1563 * This is what the user is currently doing. 1564 */ 1565 public ComponentName topActivity; 1566 1567 /** 1568 * Thumbnail representation of the task's current state. Currently 1569 * always null. 1570 */ 1571 public Bitmap thumbnail; 1572 1573 /** 1574 * Description of the task's current state. 1575 */ 1576 public CharSequence description; 1577 1578 /** 1579 * Number of activities in this task. 1580 */ 1581 public int numActivities; 1582 1583 /** 1584 * Number of activities that are currently running (not stopped 1585 * and persisted) in this task. 1586 */ 1587 public int numRunning; 1588 1589 /** 1590 * Last time task was run. For sorting. 1591 * @hide 1592 */ 1593 public long lastActiveTime; 1594 1595 /** 1596 * True if the task can go in the docked stack. 1597 * @hide 1598 */ 1599 public boolean isDockable; 1600 1601 /** 1602 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1603 * @hide 1604 */ 1605 public int resizeMode; 1606 1607 public RunningTaskInfo() { 1608 } 1609 1610 public int describeContents() { 1611 return 0; 1612 } 1613 1614 public void writeToParcel(Parcel dest, int flags) { 1615 dest.writeInt(id); 1616 dest.writeInt(stackId); 1617 ComponentName.writeToParcel(baseActivity, dest); 1618 ComponentName.writeToParcel(topActivity, dest); 1619 if (thumbnail != null) { 1620 dest.writeInt(1); 1621 thumbnail.writeToParcel(dest, 0); 1622 } else { 1623 dest.writeInt(0); 1624 } 1625 TextUtils.writeToParcel(description, dest, 1626 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1627 dest.writeInt(numActivities); 1628 dest.writeInt(numRunning); 1629 dest.writeInt(isDockable ? 1 : 0); 1630 dest.writeInt(resizeMode); 1631 } 1632 1633 public void readFromParcel(Parcel source) { 1634 id = source.readInt(); 1635 stackId = source.readInt(); 1636 baseActivity = ComponentName.readFromParcel(source); 1637 topActivity = ComponentName.readFromParcel(source); 1638 if (source.readInt() != 0) { 1639 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1640 } else { 1641 thumbnail = null; 1642 } 1643 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1644 numActivities = source.readInt(); 1645 numRunning = source.readInt(); 1646 isDockable = source.readInt() != 0; 1647 resizeMode = source.readInt(); 1648 } 1649 1650 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1651 public RunningTaskInfo createFromParcel(Parcel source) { 1652 return new RunningTaskInfo(source); 1653 } 1654 public RunningTaskInfo[] newArray(int size) { 1655 return new RunningTaskInfo[size]; 1656 } 1657 }; 1658 1659 private RunningTaskInfo(Parcel source) { 1660 readFromParcel(source); 1661 } 1662 } 1663 1664 /** 1665 * Get the list of tasks associated with the calling application. 1666 * 1667 * @return The list of tasks associated with the application making this call. 1668 * @throws SecurityException 1669 */ 1670 public List<ActivityManager.AppTask> getAppTasks() { 1671 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1672 List<IAppTask> appTasks; 1673 try { 1674 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1675 } catch (RemoteException e) { 1676 throw e.rethrowFromSystemServer(); 1677 } 1678 int numAppTasks = appTasks.size(); 1679 for (int i = 0; i < numAppTasks; i++) { 1680 tasks.add(new AppTask(appTasks.get(i))); 1681 } 1682 return tasks; 1683 } 1684 1685 /** 1686 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1687 * with {@link #addAppTask}. 1688 */ 1689 public Size getAppTaskThumbnailSize() { 1690 synchronized (this) { 1691 ensureAppTaskThumbnailSizeLocked(); 1692 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1693 } 1694 } 1695 1696 private void ensureAppTaskThumbnailSizeLocked() { 1697 if (mAppTaskThumbnailSize == null) { 1698 try { 1699 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1700 } catch (RemoteException e) { 1701 throw e.rethrowFromSystemServer(); 1702 } 1703 } 1704 } 1705 1706 /** 1707 * Add a new {@link AppTask} for the calling application. This will create a new 1708 * recents entry that is added to the <b>end</b> of all existing recents. 1709 * 1710 * @param activity The activity that is adding the entry. This is used to help determine 1711 * the context that the new recents entry will be in. 1712 * @param intent The Intent that describes the recents entry. This is the same Intent that 1713 * you would have used to launch the activity for it. In generally you will want to set 1714 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1715 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1716 * entry will exist without an activity, so it doesn't make sense to not retain it when 1717 * its activity disappears. The given Intent here also must have an explicit ComponentName 1718 * set on it. 1719 * @param description Optional additional description information. 1720 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1721 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1722 * recreated in your process, probably in a way you don't like, before the recents entry 1723 * is added. 1724 * 1725 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1726 * most likely cause of failure is that there is no more room for more tasks for your app. 1727 */ 1728 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1729 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1730 Point size; 1731 synchronized (this) { 1732 ensureAppTaskThumbnailSizeLocked(); 1733 size = mAppTaskThumbnailSize; 1734 } 1735 final int tw = thumbnail.getWidth(); 1736 final int th = thumbnail.getHeight(); 1737 if (tw != size.x || th != size.y) { 1738 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1739 1740 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1741 float scale; 1742 float dx = 0, dy = 0; 1743 if (tw * size.x > size.y * th) { 1744 scale = (float) size.x / (float) th; 1745 dx = (size.y - tw * scale) * 0.5f; 1746 } else { 1747 scale = (float) size.y / (float) tw; 1748 dy = (size.x - th * scale) * 0.5f; 1749 } 1750 Matrix matrix = new Matrix(); 1751 matrix.setScale(scale, scale); 1752 matrix.postTranslate((int) (dx + 0.5f), 0); 1753 1754 Canvas canvas = new Canvas(bm); 1755 canvas.drawBitmap(thumbnail, matrix, null); 1756 canvas.setBitmap(null); 1757 1758 thumbnail = bm; 1759 } 1760 if (description == null) { 1761 description = new TaskDescription(); 1762 } 1763 try { 1764 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1765 intent, description, thumbnail); 1766 } catch (RemoteException e) { 1767 throw e.rethrowFromSystemServer(); 1768 } 1769 } 1770 1771 /** 1772 * Return a list of the tasks that are currently running, with 1773 * the most recent being first and older ones after in order. Note that 1774 * "running" does not mean any of the task's code is currently loaded or 1775 * activity -- the task may have been frozen by the system, so that it 1776 * can be restarted in its previous state when next brought to the 1777 * foreground. 1778 * 1779 * <p><b>Note: this method is only intended for debugging and presenting 1780 * task management user interfaces</b>. This should never be used for 1781 * core logic in an application, such as deciding between different 1782 * behaviors based on the information found here. Such uses are 1783 * <em>not</em> supported, and will likely break in the future. For 1784 * example, if multiple applications can be actively running at the 1785 * same time, assumptions made about the meaning of the data here for 1786 * purposes of control flow will be incorrect.</p> 1787 * 1788 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1789 * is no longer available to third party 1790 * applications: the introduction of document-centric recents means 1791 * it can leak person information to the caller. For backwards compatibility, 1792 * it will still retu rn a small subset of its data: at least the caller's 1793 * own tasks, and possibly some other tasks 1794 * such as home that are known to not be sensitive. 1795 * 1796 * @param maxNum The maximum number of entries to return in the list. The 1797 * actual number returned may be smaller, depending on how many tasks the 1798 * user has started. 1799 * 1800 * @return Returns a list of RunningTaskInfo records describing each of 1801 * the running tasks. 1802 */ 1803 @Deprecated 1804 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1805 throws SecurityException { 1806 try { 1807 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1808 } catch (RemoteException e) { 1809 throw e.rethrowFromSystemServer(); 1810 } 1811 } 1812 1813 /** 1814 * Completely remove the given task. 1815 * 1816 * @param taskId Identifier of the task to be removed. 1817 * @return Returns true if the given task was found and removed. 1818 * 1819 * @hide 1820 */ 1821 public boolean removeTask(int taskId) throws SecurityException { 1822 try { 1823 return ActivityManagerNative.getDefault().removeTask(taskId); 1824 } catch (RemoteException e) { 1825 throw e.rethrowFromSystemServer(); 1826 } 1827 } 1828 1829 /** 1830 * Metadata related to the {@link TaskThumbnail}. 1831 * 1832 * @hide 1833 */ 1834 public static class TaskThumbnailInfo implements Parcelable { 1835 /** @hide */ 1836 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1837 private static final String ATTR_TASK_WIDTH = 1838 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1839 private static final String ATTR_TASK_HEIGHT = 1840 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1841 private static final String ATTR_SCREEN_ORIENTATION = 1842 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1843 1844 public int taskWidth; 1845 public int taskHeight; 1846 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1847 1848 public TaskThumbnailInfo() { 1849 // Do nothing 1850 } 1851 1852 private TaskThumbnailInfo(Parcel source) { 1853 readFromParcel(source); 1854 } 1855 1856 /** 1857 * Resets this info state to the initial state. 1858 * @hide 1859 */ 1860 public void reset() { 1861 taskWidth = 0; 1862 taskHeight = 0; 1863 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1864 } 1865 1866 /** 1867 * Copies from another ThumbnailInfo. 1868 */ 1869 public void copyFrom(TaskThumbnailInfo o) { 1870 taskWidth = o.taskWidth; 1871 taskHeight = o.taskHeight; 1872 screenOrientation = o.screenOrientation; 1873 } 1874 1875 /** @hide */ 1876 public void saveToXml(XmlSerializer out) throws IOException { 1877 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1878 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1879 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1880 } 1881 1882 /** @hide */ 1883 public void restoreFromXml(String attrName, String attrValue) { 1884 if (ATTR_TASK_WIDTH.equals(attrName)) { 1885 taskWidth = Integer.parseInt(attrValue); 1886 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1887 taskHeight = Integer.parseInt(attrValue); 1888 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1889 screenOrientation = Integer.parseInt(attrValue); 1890 } 1891 } 1892 1893 public int describeContents() { 1894 return 0; 1895 } 1896 1897 public void writeToParcel(Parcel dest, int flags) { 1898 dest.writeInt(taskWidth); 1899 dest.writeInt(taskHeight); 1900 dest.writeInt(screenOrientation); 1901 } 1902 1903 public void readFromParcel(Parcel source) { 1904 taskWidth = source.readInt(); 1905 taskHeight = source.readInt(); 1906 screenOrientation = source.readInt(); 1907 } 1908 1909 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1910 public TaskThumbnailInfo createFromParcel(Parcel source) { 1911 return new TaskThumbnailInfo(source); 1912 } 1913 public TaskThumbnailInfo[] newArray(int size) { 1914 return new TaskThumbnailInfo[size]; 1915 } 1916 }; 1917 } 1918 1919 /** @hide */ 1920 public static class TaskThumbnail implements Parcelable { 1921 public Bitmap mainThumbnail; 1922 public ParcelFileDescriptor thumbnailFileDescriptor; 1923 public TaskThumbnailInfo thumbnailInfo; 1924 1925 public TaskThumbnail() { 1926 } 1927 1928 private TaskThumbnail(Parcel source) { 1929 readFromParcel(source); 1930 } 1931 1932 public int describeContents() { 1933 if (thumbnailFileDescriptor != null) { 1934 return thumbnailFileDescriptor.describeContents(); 1935 } 1936 return 0; 1937 } 1938 1939 public void writeToParcel(Parcel dest, int flags) { 1940 if (mainThumbnail != null) { 1941 dest.writeInt(1); 1942 mainThumbnail.writeToParcel(dest, flags); 1943 } else { 1944 dest.writeInt(0); 1945 } 1946 if (thumbnailFileDescriptor != null) { 1947 dest.writeInt(1); 1948 thumbnailFileDescriptor.writeToParcel(dest, flags); 1949 } else { 1950 dest.writeInt(0); 1951 } 1952 if (thumbnailInfo != null) { 1953 dest.writeInt(1); 1954 thumbnailInfo.writeToParcel(dest, flags); 1955 } else { 1956 dest.writeInt(0); 1957 } 1958 } 1959 1960 public void readFromParcel(Parcel source) { 1961 if (source.readInt() != 0) { 1962 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1963 } else { 1964 mainThumbnail = null; 1965 } 1966 if (source.readInt() != 0) { 1967 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1968 } else { 1969 thumbnailFileDescriptor = null; 1970 } 1971 if (source.readInt() != 0) { 1972 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1973 } else { 1974 thumbnailInfo = null; 1975 } 1976 } 1977 1978 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1979 public TaskThumbnail createFromParcel(Parcel source) { 1980 return new TaskThumbnail(source); 1981 } 1982 public TaskThumbnail[] newArray(int size) { 1983 return new TaskThumbnail[size]; 1984 } 1985 }; 1986 } 1987 1988 /** @hide */ 1989 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1990 try { 1991 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1992 } catch (RemoteException e) { 1993 throw e.rethrowFromSystemServer(); 1994 } 1995 } 1996 1997 /** @hide */ 1998 public boolean isInHomeStack(int taskId) { 1999 try { 2000 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 2001 } catch (RemoteException e) { 2002 throw e.rethrowFromSystemServer(); 2003 } 2004 } 2005 2006 /** 2007 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2008 * activity along with the task, so it is positioned immediately behind 2009 * the task. 2010 */ 2011 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2012 2013 /** 2014 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2015 * user-instigated action, so the current activity will not receive a 2016 * hint that the user is leaving. 2017 */ 2018 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2019 2020 /** 2021 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2022 * with a null options argument. 2023 * 2024 * @param taskId The identifier of the task to be moved, as found in 2025 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2026 * @param flags Additional operational flags, 0 or more of 2027 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2028 */ 2029 public void moveTaskToFront(int taskId, int flags) { 2030 moveTaskToFront(taskId, flags, null); 2031 } 2032 2033 /** 2034 * Ask that the task associated with a given task ID be moved to the 2035 * front of the stack, so it is now visible to the user. Requires that 2036 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2037 * or a SecurityException will be thrown. 2038 * 2039 * @param taskId The identifier of the task to be moved, as found in 2040 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2041 * @param flags Additional operational flags, 0 or more of 2042 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2043 * @param options Additional options for the operation, either null or 2044 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2045 * Context.startActivity(Intent, Bundle)}. 2046 */ 2047 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2048 try { 2049 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 2050 } catch (RemoteException e) { 2051 throw e.rethrowFromSystemServer(); 2052 } 2053 } 2054 2055 /** 2056 * Information you can retrieve about a particular Service that is 2057 * currently running in the system. 2058 */ 2059 public static class RunningServiceInfo implements Parcelable { 2060 /** 2061 * The service component. 2062 */ 2063 public ComponentName service; 2064 2065 /** 2066 * If non-zero, this is the process the service is running in. 2067 */ 2068 public int pid; 2069 2070 /** 2071 * The UID that owns this service. 2072 */ 2073 public int uid; 2074 2075 /** 2076 * The name of the process this service runs in. 2077 */ 2078 public String process; 2079 2080 /** 2081 * Set to true if the service has asked to run as a foreground process. 2082 */ 2083 public boolean foreground; 2084 2085 /** 2086 * The time when the service was first made active, either by someone 2087 * starting or binding to it. This 2088 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2089 */ 2090 public long activeSince; 2091 2092 /** 2093 * Set to true if this service has been explicitly started. 2094 */ 2095 public boolean started; 2096 2097 /** 2098 * Number of clients connected to the service. 2099 */ 2100 public int clientCount; 2101 2102 /** 2103 * Number of times the service's process has crashed while the service 2104 * is running. 2105 */ 2106 public int crashCount; 2107 2108 /** 2109 * The time when there was last activity in the service (either 2110 * explicit requests to start it or clients binding to it). This 2111 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2112 */ 2113 public long lastActivityTime; 2114 2115 /** 2116 * If non-zero, this service is not currently running, but scheduled to 2117 * restart at the given time. 2118 */ 2119 public long restarting; 2120 2121 /** 2122 * Bit for {@link #flags}: set if this service has been 2123 * explicitly started. 2124 */ 2125 public static final int FLAG_STARTED = 1<<0; 2126 2127 /** 2128 * Bit for {@link #flags}: set if the service has asked to 2129 * run as a foreground process. 2130 */ 2131 public static final int FLAG_FOREGROUND = 1<<1; 2132 2133 /** 2134 * Bit for {@link #flags): set if the service is running in a 2135 * core system process. 2136 */ 2137 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2138 2139 /** 2140 * Bit for {@link #flags): set if the service is running in a 2141 * persistent process. 2142 */ 2143 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2144 2145 /** 2146 * Running flags. 2147 */ 2148 public int flags; 2149 2150 /** 2151 * For special services that are bound to by system code, this is 2152 * the package that holds the binding. 2153 */ 2154 public String clientPackage; 2155 2156 /** 2157 * For special services that are bound to by system code, this is 2158 * a string resource providing a user-visible label for who the 2159 * client is. 2160 */ 2161 public int clientLabel; 2162 2163 public RunningServiceInfo() { 2164 } 2165 2166 public int describeContents() { 2167 return 0; 2168 } 2169 2170 public void writeToParcel(Parcel dest, int flags) { 2171 ComponentName.writeToParcel(service, dest); 2172 dest.writeInt(pid); 2173 dest.writeInt(uid); 2174 dest.writeString(process); 2175 dest.writeInt(foreground ? 1 : 0); 2176 dest.writeLong(activeSince); 2177 dest.writeInt(started ? 1 : 0); 2178 dest.writeInt(clientCount); 2179 dest.writeInt(crashCount); 2180 dest.writeLong(lastActivityTime); 2181 dest.writeLong(restarting); 2182 dest.writeInt(this.flags); 2183 dest.writeString(clientPackage); 2184 dest.writeInt(clientLabel); 2185 } 2186 2187 public void readFromParcel(Parcel source) { 2188 service = ComponentName.readFromParcel(source); 2189 pid = source.readInt(); 2190 uid = source.readInt(); 2191 process = source.readString(); 2192 foreground = source.readInt() != 0; 2193 activeSince = source.readLong(); 2194 started = source.readInt() != 0; 2195 clientCount = source.readInt(); 2196 crashCount = source.readInt(); 2197 lastActivityTime = source.readLong(); 2198 restarting = source.readLong(); 2199 flags = source.readInt(); 2200 clientPackage = source.readString(); 2201 clientLabel = source.readInt(); 2202 } 2203 2204 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2205 public RunningServiceInfo createFromParcel(Parcel source) { 2206 return new RunningServiceInfo(source); 2207 } 2208 public RunningServiceInfo[] newArray(int size) { 2209 return new RunningServiceInfo[size]; 2210 } 2211 }; 2212 2213 private RunningServiceInfo(Parcel source) { 2214 readFromParcel(source); 2215 } 2216 } 2217 2218 /** 2219 * Return a list of the services that are currently running. 2220 * 2221 * <p><b>Note: this method is only intended for debugging or implementing 2222 * service management type user interfaces.</b></p> 2223 * 2224 * @param maxNum The maximum number of entries to return in the list. The 2225 * actual number returned may be smaller, depending on how many services 2226 * are running. 2227 * 2228 * @return Returns a list of RunningServiceInfo records describing each of 2229 * the running tasks. 2230 */ 2231 public List<RunningServiceInfo> getRunningServices(int maxNum) 2232 throws SecurityException { 2233 try { 2234 return ActivityManagerNative.getDefault() 2235 .getServices(maxNum, 0); 2236 } catch (RemoteException e) { 2237 throw e.rethrowFromSystemServer(); 2238 } 2239 } 2240 2241 /** 2242 * Returns a PendingIntent you can start to show a control panel for the 2243 * given running service. If the service does not have a control panel, 2244 * null is returned. 2245 */ 2246 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2247 throws SecurityException { 2248 try { 2249 return ActivityManagerNative.getDefault() 2250 .getRunningServiceControlPanel(service); 2251 } catch (RemoteException e) { 2252 throw e.rethrowFromSystemServer(); 2253 } 2254 } 2255 2256 /** 2257 * Information you can retrieve about the available memory through 2258 * {@link ActivityManager#getMemoryInfo}. 2259 */ 2260 public static class MemoryInfo implements Parcelable { 2261 /** 2262 * The available memory on the system. This number should not 2263 * be considered absolute: due to the nature of the kernel, a significant 2264 * portion of this memory is actually in use and needed for the overall 2265 * system to run well. 2266 */ 2267 public long availMem; 2268 2269 /** 2270 * The total memory accessible by the kernel. This is basically the 2271 * RAM size of the device, not including below-kernel fixed allocations 2272 * like DMA buffers, RAM for the baseband CPU, etc. 2273 */ 2274 public long totalMem; 2275 2276 /** 2277 * The threshold of {@link #availMem} at which we consider memory to be 2278 * low and start killing background services and other non-extraneous 2279 * processes. 2280 */ 2281 public long threshold; 2282 2283 /** 2284 * Set to true if the system considers itself to currently be in a low 2285 * memory situation. 2286 */ 2287 public boolean lowMemory; 2288 2289 /** @hide */ 2290 public long hiddenAppThreshold; 2291 /** @hide */ 2292 public long secondaryServerThreshold; 2293 /** @hide */ 2294 public long visibleAppThreshold; 2295 /** @hide */ 2296 public long foregroundAppThreshold; 2297 2298 public MemoryInfo() { 2299 } 2300 2301 public int describeContents() { 2302 return 0; 2303 } 2304 2305 public void writeToParcel(Parcel dest, int flags) { 2306 dest.writeLong(availMem); 2307 dest.writeLong(totalMem); 2308 dest.writeLong(threshold); 2309 dest.writeInt(lowMemory ? 1 : 0); 2310 dest.writeLong(hiddenAppThreshold); 2311 dest.writeLong(secondaryServerThreshold); 2312 dest.writeLong(visibleAppThreshold); 2313 dest.writeLong(foregroundAppThreshold); 2314 } 2315 2316 public void readFromParcel(Parcel source) { 2317 availMem = source.readLong(); 2318 totalMem = source.readLong(); 2319 threshold = source.readLong(); 2320 lowMemory = source.readInt() != 0; 2321 hiddenAppThreshold = source.readLong(); 2322 secondaryServerThreshold = source.readLong(); 2323 visibleAppThreshold = source.readLong(); 2324 foregroundAppThreshold = source.readLong(); 2325 } 2326 2327 public static final Creator<MemoryInfo> CREATOR 2328 = new Creator<MemoryInfo>() { 2329 public MemoryInfo createFromParcel(Parcel source) { 2330 return new MemoryInfo(source); 2331 } 2332 public MemoryInfo[] newArray(int size) { 2333 return new MemoryInfo[size]; 2334 } 2335 }; 2336 2337 private MemoryInfo(Parcel source) { 2338 readFromParcel(source); 2339 } 2340 } 2341 2342 /** 2343 * Return general information about the memory state of the system. This 2344 * can be used to help decide how to manage your own memory, though note 2345 * that polling is not recommended and 2346 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2347 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2348 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2349 * level of your process as needed, which gives a better hint for how to 2350 * manage its memory. 2351 */ 2352 public void getMemoryInfo(MemoryInfo outInfo) { 2353 try { 2354 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2355 } catch (RemoteException e) { 2356 throw e.rethrowFromSystemServer(); 2357 } 2358 } 2359 2360 /** 2361 * Information you can retrieve about an ActivityStack in the system. 2362 * @hide 2363 */ 2364 public static class StackInfo implements Parcelable { 2365 public int stackId; 2366 public Rect bounds = new Rect(); 2367 public int[] taskIds; 2368 public String[] taskNames; 2369 public Rect[] taskBounds; 2370 public int[] taskUserIds; 2371 public int displayId; 2372 public int userId; 2373 2374 @Override 2375 public int describeContents() { 2376 return 0; 2377 } 2378 2379 @Override 2380 public void writeToParcel(Parcel dest, int flags) { 2381 dest.writeInt(stackId); 2382 dest.writeInt(bounds.left); 2383 dest.writeInt(bounds.top); 2384 dest.writeInt(bounds.right); 2385 dest.writeInt(bounds.bottom); 2386 dest.writeIntArray(taskIds); 2387 dest.writeStringArray(taskNames); 2388 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2389 dest.writeInt(boundsCount); 2390 for (int i = 0; i < boundsCount; i++) { 2391 dest.writeInt(taskBounds[i].left); 2392 dest.writeInt(taskBounds[i].top); 2393 dest.writeInt(taskBounds[i].right); 2394 dest.writeInt(taskBounds[i].bottom); 2395 } 2396 dest.writeIntArray(taskUserIds); 2397 dest.writeInt(displayId); 2398 dest.writeInt(userId); 2399 } 2400 2401 public void readFromParcel(Parcel source) { 2402 stackId = source.readInt(); 2403 bounds = new Rect( 2404 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2405 taskIds = source.createIntArray(); 2406 taskNames = source.createStringArray(); 2407 final int boundsCount = source.readInt(); 2408 if (boundsCount > 0) { 2409 taskBounds = new Rect[boundsCount]; 2410 for (int i = 0; i < boundsCount; i++) { 2411 taskBounds[i] = new Rect(); 2412 taskBounds[i].set( 2413 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2414 } 2415 } else { 2416 taskBounds = null; 2417 } 2418 taskUserIds = source.createIntArray(); 2419 displayId = source.readInt(); 2420 userId = source.readInt(); 2421 } 2422 2423 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2424 @Override 2425 public StackInfo createFromParcel(Parcel source) { 2426 return new StackInfo(source); 2427 } 2428 @Override 2429 public StackInfo[] newArray(int size) { 2430 return new StackInfo[size]; 2431 } 2432 }; 2433 2434 public StackInfo() { 2435 } 2436 2437 private StackInfo(Parcel source) { 2438 readFromParcel(source); 2439 } 2440 2441 public String toString(String prefix) { 2442 StringBuilder sb = new StringBuilder(256); 2443 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2444 sb.append(" bounds="); sb.append(bounds.toShortString()); 2445 sb.append(" displayId="); sb.append(displayId); 2446 sb.append(" userId="); sb.append(userId); 2447 sb.append("\n"); 2448 prefix = prefix + " "; 2449 for (int i = 0; i < taskIds.length; ++i) { 2450 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2451 sb.append(": "); sb.append(taskNames[i]); 2452 if (taskBounds != null) { 2453 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2454 } 2455 sb.append(" userId=").append(taskUserIds[i]); 2456 sb.append("\n"); 2457 } 2458 return sb.toString(); 2459 } 2460 2461 @Override 2462 public String toString() { 2463 return toString(""); 2464 } 2465 } 2466 2467 /** 2468 * @hide 2469 */ 2470 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2471 try { 2472 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2473 observer, UserHandle.myUserId()); 2474 } catch (RemoteException e) { 2475 throw e.rethrowFromSystemServer(); 2476 } 2477 } 2478 2479 /** 2480 * Permits an application to erase its own data from disk. This is equivalent to 2481 * the user choosing to clear the app's data from within the device settings UI. It 2482 * erases all dynamic data associated with the app -- its private data and data in its 2483 * private area on external storage -- but does not remove the installed application 2484 * itself, nor any OBB files. 2485 * 2486 * @return {@code true} if the application successfully requested that the application's 2487 * data be erased; {@code false} otherwise. 2488 */ 2489 public boolean clearApplicationUserData() { 2490 return clearApplicationUserData(mContext.getPackageName(), null); 2491 } 2492 2493 2494 /** 2495 * Permits an application to get the persistent URI permissions granted to another. 2496 * 2497 * <p>Typically called by Settings. 2498 * 2499 * @param packageName application to look for the granted permissions 2500 * @return list of granted URI permissions 2501 * 2502 * @hide 2503 */ 2504 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2505 try { 2506 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2507 UserHandle.myUserId()); 2508 } catch (RemoteException e) { 2509 throw e.rethrowFromSystemServer(); 2510 } 2511 } 2512 2513 /** 2514 * Permits an application to clear the persistent URI permissions granted to another. 2515 * 2516 * <p>Typically called by Settings. 2517 * 2518 * @param packageName application to clear its granted permissions 2519 * 2520 * @hide 2521 */ 2522 public void clearGrantedUriPermissions(String packageName) { 2523 try { 2524 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2525 UserHandle.myUserId()); 2526 } catch (RemoteException e) { 2527 throw e.rethrowFromSystemServer(); 2528 } 2529 } 2530 2531 /** 2532 * Information you can retrieve about any processes that are in an error condition. 2533 */ 2534 public static class ProcessErrorStateInfo implements Parcelable { 2535 /** 2536 * Condition codes 2537 */ 2538 public static final int NO_ERROR = 0; 2539 public static final int CRASHED = 1; 2540 public static final int NOT_RESPONDING = 2; 2541 2542 /** 2543 * The condition that the process is in. 2544 */ 2545 public int condition; 2546 2547 /** 2548 * The process name in which the crash or error occurred. 2549 */ 2550 public String processName; 2551 2552 /** 2553 * The pid of this process; 0 if none 2554 */ 2555 public int pid; 2556 2557 /** 2558 * The kernel user-ID that has been assigned to this process; 2559 * currently this is not a unique ID (multiple applications can have 2560 * the same uid). 2561 */ 2562 public int uid; 2563 2564 /** 2565 * The activity name associated with the error, if known. May be null. 2566 */ 2567 public String tag; 2568 2569 /** 2570 * A short message describing the error condition. 2571 */ 2572 public String shortMsg; 2573 2574 /** 2575 * A long message describing the error condition. 2576 */ 2577 public String longMsg; 2578 2579 /** 2580 * The stack trace where the error originated. May be null. 2581 */ 2582 public String stackTrace; 2583 2584 /** 2585 * to be deprecated: This value will always be null. 2586 */ 2587 public byte[] crashData = null; 2588 2589 public ProcessErrorStateInfo() { 2590 } 2591 2592 @Override 2593 public int describeContents() { 2594 return 0; 2595 } 2596 2597 @Override 2598 public void writeToParcel(Parcel dest, int flags) { 2599 dest.writeInt(condition); 2600 dest.writeString(processName); 2601 dest.writeInt(pid); 2602 dest.writeInt(uid); 2603 dest.writeString(tag); 2604 dest.writeString(shortMsg); 2605 dest.writeString(longMsg); 2606 dest.writeString(stackTrace); 2607 } 2608 2609 public void readFromParcel(Parcel source) { 2610 condition = source.readInt(); 2611 processName = source.readString(); 2612 pid = source.readInt(); 2613 uid = source.readInt(); 2614 tag = source.readString(); 2615 shortMsg = source.readString(); 2616 longMsg = source.readString(); 2617 stackTrace = source.readString(); 2618 } 2619 2620 public static final Creator<ProcessErrorStateInfo> CREATOR = 2621 new Creator<ProcessErrorStateInfo>() { 2622 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2623 return new ProcessErrorStateInfo(source); 2624 } 2625 public ProcessErrorStateInfo[] newArray(int size) { 2626 return new ProcessErrorStateInfo[size]; 2627 } 2628 }; 2629 2630 private ProcessErrorStateInfo(Parcel source) { 2631 readFromParcel(source); 2632 } 2633 } 2634 2635 /** 2636 * Returns a list of any processes that are currently in an error condition. The result 2637 * will be null if all processes are running properly at this time. 2638 * 2639 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2640 * current error conditions (it will not return an empty list). This list ordering is not 2641 * specified. 2642 */ 2643 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2644 try { 2645 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2646 } catch (RemoteException e) { 2647 throw e.rethrowFromSystemServer(); 2648 } 2649 } 2650 2651 /** 2652 * Information you can retrieve about a running process. 2653 */ 2654 public static class RunningAppProcessInfo implements Parcelable { 2655 /** 2656 * The name of the process that this object is associated with 2657 */ 2658 public String processName; 2659 2660 /** 2661 * The pid of this process; 0 if none 2662 */ 2663 public int pid; 2664 2665 /** 2666 * The user id of this process. 2667 */ 2668 public int uid; 2669 2670 /** 2671 * All packages that have been loaded into the process. 2672 */ 2673 public String pkgList[]; 2674 2675 /** 2676 * Constant for {@link #flags}: this is an app that is unable to 2677 * correctly save its state when going to the background, 2678 * so it can not be killed while in the background. 2679 * @hide 2680 */ 2681 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2682 2683 /** 2684 * Constant for {@link #flags}: this process is associated with a 2685 * persistent system app. 2686 * @hide 2687 */ 2688 public static final int FLAG_PERSISTENT = 1<<1; 2689 2690 /** 2691 * Constant for {@link #flags}: this process is associated with a 2692 * persistent system app. 2693 * @hide 2694 */ 2695 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2696 2697 /** 2698 * Flags of information. May be any of 2699 * {@link #FLAG_CANT_SAVE_STATE}. 2700 * @hide 2701 */ 2702 public int flags; 2703 2704 /** 2705 * Last memory trim level reported to the process: corresponds to 2706 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2707 * ComponentCallbacks2.onTrimMemory(int)}. 2708 */ 2709 public int lastTrimLevel; 2710 2711 /** 2712 * Constant for {@link #importance}: This process is running the 2713 * foreground UI; that is, it is the thing currently at the top of the screen 2714 * that the user is interacting with. 2715 */ 2716 public static final int IMPORTANCE_FOREGROUND = 100; 2717 2718 /** 2719 * Constant for {@link #importance}: This process is running a foreground 2720 * service, for example to perform music playback even while the user is 2721 * not immediately in the app. This generally indicates that the process 2722 * is doing something the user actively cares about. 2723 */ 2724 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2725 2726 /** 2727 * Constant for {@link #importance}: This process is running the foreground 2728 * UI, but the device is asleep so it is not visible to the user. This means 2729 * the user is not really aware of the process, because they can not see or 2730 * interact with it, but it is quite important because it what they expect to 2731 * return to once unlocking the device. 2732 */ 2733 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2734 2735 /** 2736 * Constant for {@link #importance}: This process is running something 2737 * that is actively visible to the user, though not in the immediate 2738 * foreground. This may be running a window that is behind the current 2739 * foreground (so paused and with its state saved, not interacting with 2740 * the user, but visible to them to some degree); it may also be running 2741 * other services under the system's control that it inconsiders important. 2742 */ 2743 public static final int IMPORTANCE_VISIBLE = 200; 2744 2745 /** 2746 * Constant for {@link #importance}: This process is not something the user 2747 * is directly aware of, but is otherwise perceptable to them to some degree. 2748 */ 2749 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2750 2751 /** 2752 * Constant for {@link #importance}: This process is running an 2753 * application that can not save its state, and thus can't be killed 2754 * while in the background. 2755 * @hide 2756 */ 2757 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2758 2759 /** 2760 * Constant for {@link #importance}: This process is contains services 2761 * that should remain running. These are background services apps have 2762 * started, not something the user is aware of, so they may be killed by 2763 * the system relatively freely (though it is generally desired that they 2764 * stay running as long as they want to). 2765 */ 2766 public static final int IMPORTANCE_SERVICE = 300; 2767 2768 /** 2769 * Constant for {@link #importance}: This process process contains 2770 * background code that is expendable. 2771 */ 2772 public static final int IMPORTANCE_BACKGROUND = 400; 2773 2774 /** 2775 * Constant for {@link #importance}: This process is empty of any 2776 * actively running code. 2777 */ 2778 public static final int IMPORTANCE_EMPTY = 500; 2779 2780 /** 2781 * Constant for {@link #importance}: This process does not exist. 2782 */ 2783 public static final int IMPORTANCE_GONE = 1000; 2784 2785 /** @hide */ 2786 public static int procStateToImportance(int procState) { 2787 if (procState == PROCESS_STATE_NONEXISTENT) { 2788 return IMPORTANCE_GONE; 2789 } else if (procState >= PROCESS_STATE_HOME) { 2790 return IMPORTANCE_BACKGROUND; 2791 } else if (procState >= PROCESS_STATE_SERVICE) { 2792 return IMPORTANCE_SERVICE; 2793 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2794 return IMPORTANCE_CANT_SAVE_STATE; 2795 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2796 return IMPORTANCE_PERCEPTIBLE; 2797 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2798 return IMPORTANCE_VISIBLE; 2799 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2800 return IMPORTANCE_TOP_SLEEPING; 2801 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2802 return IMPORTANCE_FOREGROUND_SERVICE; 2803 } else { 2804 return IMPORTANCE_FOREGROUND; 2805 } 2806 } 2807 2808 /** 2809 * The relative importance level that the system places on this 2810 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2811 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2812 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2813 * constants are numbered so that "more important" values are always 2814 * smaller than "less important" values. 2815 */ 2816 public int importance; 2817 2818 /** 2819 * An additional ordering within a particular {@link #importance} 2820 * category, providing finer-grained information about the relative 2821 * utility of processes within a category. This number means nothing 2822 * except that a smaller values are more recently used (and thus 2823 * more important). Currently an LRU value is only maintained for 2824 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2825 * be maintained in the future. 2826 */ 2827 public int lru; 2828 2829 /** 2830 * Constant for {@link #importanceReasonCode}: nothing special has 2831 * been specified for the reason for this level. 2832 */ 2833 public static final int REASON_UNKNOWN = 0; 2834 2835 /** 2836 * Constant for {@link #importanceReasonCode}: one of the application's 2837 * content providers is being used by another process. The pid of 2838 * the client process is in {@link #importanceReasonPid} and the 2839 * target provider in this process is in 2840 * {@link #importanceReasonComponent}. 2841 */ 2842 public static final int REASON_PROVIDER_IN_USE = 1; 2843 2844 /** 2845 * Constant for {@link #importanceReasonCode}: one of the application's 2846 * content providers is being used by another process. The pid of 2847 * the client process is in {@link #importanceReasonPid} and the 2848 * target provider in this process is in 2849 * {@link #importanceReasonComponent}. 2850 */ 2851 public static final int REASON_SERVICE_IN_USE = 2; 2852 2853 /** 2854 * The reason for {@link #importance}, if any. 2855 */ 2856 public int importanceReasonCode; 2857 2858 /** 2859 * For the specified values of {@link #importanceReasonCode}, this 2860 * is the process ID of the other process that is a client of this 2861 * process. This will be 0 if no other process is using this one. 2862 */ 2863 public int importanceReasonPid; 2864 2865 /** 2866 * For the specified values of {@link #importanceReasonCode}, this 2867 * is the name of the component that is being used in this process. 2868 */ 2869 public ComponentName importanceReasonComponent; 2870 2871 /** 2872 * When {@link #importanceReasonPid} is non-0, this is the importance 2873 * of the other pid. @hide 2874 */ 2875 public int importanceReasonImportance; 2876 2877 /** 2878 * Current process state, as per PROCESS_STATE_* constants. 2879 * @hide 2880 */ 2881 public int processState; 2882 2883 public RunningAppProcessInfo() { 2884 importance = IMPORTANCE_FOREGROUND; 2885 importanceReasonCode = REASON_UNKNOWN; 2886 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2887 } 2888 2889 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2890 processName = pProcessName; 2891 pid = pPid; 2892 pkgList = pArr; 2893 } 2894 2895 public int describeContents() { 2896 return 0; 2897 } 2898 2899 public void writeToParcel(Parcel dest, int flags) { 2900 dest.writeString(processName); 2901 dest.writeInt(pid); 2902 dest.writeInt(uid); 2903 dest.writeStringArray(pkgList); 2904 dest.writeInt(this.flags); 2905 dest.writeInt(lastTrimLevel); 2906 dest.writeInt(importance); 2907 dest.writeInt(lru); 2908 dest.writeInt(importanceReasonCode); 2909 dest.writeInt(importanceReasonPid); 2910 ComponentName.writeToParcel(importanceReasonComponent, dest); 2911 dest.writeInt(importanceReasonImportance); 2912 dest.writeInt(processState); 2913 } 2914 2915 public void readFromParcel(Parcel source) { 2916 processName = source.readString(); 2917 pid = source.readInt(); 2918 uid = source.readInt(); 2919 pkgList = source.readStringArray(); 2920 flags = source.readInt(); 2921 lastTrimLevel = source.readInt(); 2922 importance = source.readInt(); 2923 lru = source.readInt(); 2924 importanceReasonCode = source.readInt(); 2925 importanceReasonPid = source.readInt(); 2926 importanceReasonComponent = ComponentName.readFromParcel(source); 2927 importanceReasonImportance = source.readInt(); 2928 processState = source.readInt(); 2929 } 2930 2931 public static final Creator<RunningAppProcessInfo> CREATOR = 2932 new Creator<RunningAppProcessInfo>() { 2933 public RunningAppProcessInfo createFromParcel(Parcel source) { 2934 return new RunningAppProcessInfo(source); 2935 } 2936 public RunningAppProcessInfo[] newArray(int size) { 2937 return new RunningAppProcessInfo[size]; 2938 } 2939 }; 2940 2941 private RunningAppProcessInfo(Parcel source) { 2942 readFromParcel(source); 2943 } 2944 } 2945 2946 /** 2947 * Returns a list of application processes installed on external media 2948 * that are running on the device. 2949 * 2950 * <p><b>Note: this method is only intended for debugging or building 2951 * a user-facing process management UI.</b></p> 2952 * 2953 * @return Returns a list of ApplicationInfo records, or null if none 2954 * This list ordering is not specified. 2955 * @hide 2956 */ 2957 public List<ApplicationInfo> getRunningExternalApplications() { 2958 try { 2959 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2960 } catch (RemoteException e) { 2961 throw e.rethrowFromSystemServer(); 2962 } 2963 } 2964 2965 /** 2966 * Sets the memory trim mode for a process and schedules a memory trim operation. 2967 * 2968 * <p><b>Note: this method is only intended for testing framework.</b></p> 2969 * 2970 * @return Returns true if successful. 2971 * @hide 2972 */ 2973 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2974 try { 2975 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2976 level); 2977 } catch (RemoteException e) { 2978 throw e.rethrowFromSystemServer(); 2979 } 2980 } 2981 2982 /** 2983 * Returns a list of application processes that are running on the device. 2984 * 2985 * <p><b>Note: this method is only intended for debugging or building 2986 * a user-facing process management UI.</b></p> 2987 * 2988 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2989 * running processes (it will not return an empty list). This list ordering is not 2990 * specified. 2991 */ 2992 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2993 try { 2994 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2995 } catch (RemoteException e) { 2996 throw e.rethrowFromSystemServer(); 2997 } 2998 } 2999 3000 /** 3001 * Return the importance of a given package name, based on the processes that are 3002 * currently running. The return value is one of the importance constants defined 3003 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3004 * processes that this package has code running inside of. If there are no processes 3005 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3006 * @hide 3007 */ 3008 @SystemApi 3009 public int getPackageImportance(String packageName) { 3010 try { 3011 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 3012 mContext.getOpPackageName()); 3013 return RunningAppProcessInfo.procStateToImportance(procState); 3014 } catch (RemoteException e) { 3015 throw e.rethrowFromSystemServer(); 3016 } 3017 } 3018 3019 /** 3020 * Return global memory state information for the calling process. This 3021 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3022 * only fields that will be filled in are 3023 * {@link RunningAppProcessInfo#pid}, 3024 * {@link RunningAppProcessInfo#uid}, 3025 * {@link RunningAppProcessInfo#lastTrimLevel}, 3026 * {@link RunningAppProcessInfo#importance}, 3027 * {@link RunningAppProcessInfo#lru}, and 3028 * {@link RunningAppProcessInfo#importanceReasonCode}. 3029 */ 3030 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3031 try { 3032 ActivityManagerNative.getDefault().getMyMemoryState(outState); 3033 } catch (RemoteException e) { 3034 throw e.rethrowFromSystemServer(); 3035 } 3036 } 3037 3038 /** 3039 * Return information about the memory usage of one or more processes. 3040 * 3041 * <p><b>Note: this method is only intended for debugging or building 3042 * a user-facing process management UI.</b></p> 3043 * 3044 * @param pids The pids of the processes whose memory usage is to be 3045 * retrieved. 3046 * @return Returns an array of memory information, one for each 3047 * requested pid. 3048 */ 3049 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3050 try { 3051 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 3052 } catch (RemoteException e) { 3053 throw e.rethrowFromSystemServer(); 3054 } 3055 } 3056 3057 /** 3058 * @deprecated This is now just a wrapper for 3059 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3060 * is no longer available to applications because it allows them to 3061 * break other applications by removing their alarms, stopping their 3062 * services, etc. 3063 */ 3064 @Deprecated 3065 public void restartPackage(String packageName) { 3066 killBackgroundProcesses(packageName); 3067 } 3068 3069 /** 3070 * Have the system immediately kill all background processes associated 3071 * with the given package. This is the same as the kernel killing those 3072 * processes to reclaim memory; the system will take care of restarting 3073 * these processes in the future as needed. 3074 * 3075 * <p>You must hold the permission 3076 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3077 * call this method. 3078 * 3079 * @param packageName The name of the package whose processes are to 3080 * be killed. 3081 */ 3082 public void killBackgroundProcesses(String packageName) { 3083 try { 3084 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 3085 UserHandle.myUserId()); 3086 } catch (RemoteException e) { 3087 throw e.rethrowFromSystemServer(); 3088 } 3089 } 3090 3091 /** 3092 * Kills the specified UID. 3093 * @param uid The UID to kill. 3094 * @param reason The reason for the kill. 3095 * 3096 * @hide 3097 */ 3098 @RequiresPermission(Manifest.permission.KILL_UID) 3099 public void killUid(int uid, String reason) { 3100 try { 3101 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3102 UserHandle.getUserId(uid), reason); 3103 } catch (RemoteException e) { 3104 throw e.rethrowFromSystemServer(); 3105 } 3106 } 3107 3108 /** 3109 * Have the system perform a force stop of everything associated with 3110 * the given application package. All processes that share its uid 3111 * will be killed, all services it has running stopped, all activities 3112 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3113 * broadcast will be sent, so that any of its registered alarms can 3114 * be stopped, notifications removed, etc. 3115 * 3116 * <p>You must hold the permission 3117 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3118 * call this method. 3119 * 3120 * @param packageName The name of the package to be stopped. 3121 * @param userId The user for which the running package is to be stopped. 3122 * 3123 * @hide This is not available to third party applications due to 3124 * it allowing them to break other applications by stopping their 3125 * services, removing their alarms, etc. 3126 */ 3127 public void forceStopPackageAsUser(String packageName, int userId) { 3128 try { 3129 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3130 } catch (RemoteException e) { 3131 throw e.rethrowFromSystemServer(); 3132 } 3133 } 3134 3135 /** 3136 * @see #forceStopPackageAsUser(String, int) 3137 * @hide 3138 */ 3139 public void forceStopPackage(String packageName) { 3140 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3141 } 3142 3143 /** 3144 * Get the device configuration attributes. 3145 */ 3146 public ConfigurationInfo getDeviceConfigurationInfo() { 3147 try { 3148 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3149 } catch (RemoteException e) { 3150 throw e.rethrowFromSystemServer(); 3151 } 3152 } 3153 3154 /** 3155 * Get the preferred density of icons for the launcher. This is used when 3156 * custom drawables are created (e.g., for shortcuts). 3157 * 3158 * @return density in terms of DPI 3159 */ 3160 public int getLauncherLargeIconDensity() { 3161 final Resources res = mContext.getResources(); 3162 final int density = res.getDisplayMetrics().densityDpi; 3163 final int sw = res.getConfiguration().smallestScreenWidthDp; 3164 3165 if (sw < 600) { 3166 // Smaller than approx 7" tablets, use the regular icon size. 3167 return density; 3168 } 3169 3170 switch (density) { 3171 case DisplayMetrics.DENSITY_LOW: 3172 return DisplayMetrics.DENSITY_MEDIUM; 3173 case DisplayMetrics.DENSITY_MEDIUM: 3174 return DisplayMetrics.DENSITY_HIGH; 3175 case DisplayMetrics.DENSITY_TV: 3176 return DisplayMetrics.DENSITY_XHIGH; 3177 case DisplayMetrics.DENSITY_HIGH: 3178 return DisplayMetrics.DENSITY_XHIGH; 3179 case DisplayMetrics.DENSITY_XHIGH: 3180 return DisplayMetrics.DENSITY_XXHIGH; 3181 case DisplayMetrics.DENSITY_XXHIGH: 3182 return DisplayMetrics.DENSITY_XHIGH * 2; 3183 default: 3184 // The density is some abnormal value. Return some other 3185 // abnormal value that is a reasonable scaling of it. 3186 return (int)((density*1.5f)+.5f); 3187 } 3188 } 3189 3190 /** 3191 * Get the preferred launcher icon size. This is used when custom drawables 3192 * are created (e.g., for shortcuts). 3193 * 3194 * @return dimensions of square icons in terms of pixels 3195 */ 3196 public int getLauncherLargeIconSize() { 3197 return getLauncherLargeIconSizeInner(mContext); 3198 } 3199 3200 static int getLauncherLargeIconSizeInner(Context context) { 3201 final Resources res = context.getResources(); 3202 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3203 final int sw = res.getConfiguration().smallestScreenWidthDp; 3204 3205 if (sw < 600) { 3206 // Smaller than approx 7" tablets, use the regular icon size. 3207 return size; 3208 } 3209 3210 final int density = res.getDisplayMetrics().densityDpi; 3211 3212 switch (density) { 3213 case DisplayMetrics.DENSITY_LOW: 3214 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3215 case DisplayMetrics.DENSITY_MEDIUM: 3216 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3217 case DisplayMetrics.DENSITY_TV: 3218 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3219 case DisplayMetrics.DENSITY_HIGH: 3220 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3221 case DisplayMetrics.DENSITY_XHIGH: 3222 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3223 case DisplayMetrics.DENSITY_XXHIGH: 3224 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3225 default: 3226 // The density is some abnormal value. Return some other 3227 // abnormal value that is a reasonable scaling of it. 3228 return (int)((size*1.5f) + .5f); 3229 } 3230 } 3231 3232 /** 3233 * Returns "true" if the user interface is currently being messed with 3234 * by a monkey. 3235 */ 3236 public static boolean isUserAMonkey() { 3237 try { 3238 return ActivityManagerNative.getDefault().isUserAMonkey(); 3239 } catch (RemoteException e) { 3240 throw e.rethrowFromSystemServer(); 3241 } 3242 } 3243 3244 /** 3245 * Returns "true" if device is running in a test harness. 3246 */ 3247 public static boolean isRunningInTestHarness() { 3248 return SystemProperties.getBoolean("ro.test_harness", false); 3249 } 3250 3251 /** 3252 * Returns the launch count of each installed package. 3253 * 3254 * @hide 3255 */ 3256 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3257 try { 3258 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3259 ServiceManager.getService("usagestats")); 3260 if (usageStatsService == null) { 3261 return new HashMap<String, Integer>(); 3262 } 3263 3264 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3265 ActivityThread.currentPackageName()); 3266 if (allPkgUsageStats == null) { 3267 return new HashMap<String, Integer>(); 3268 } 3269 3270 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3271 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3272 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3273 } 3274 3275 return launchCounts; 3276 } catch (RemoteException e) { 3277 Log.w(TAG, "Could not query launch counts", e); 3278 return new HashMap<String, Integer>(); 3279 } 3280 }*/ 3281 3282 /** @hide */ 3283 public static int checkComponentPermission(String permission, int uid, 3284 int owningUid, boolean exported) { 3285 // Root, system server get to do everything. 3286 final int appId = UserHandle.getAppId(uid); 3287 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3288 return PackageManager.PERMISSION_GRANTED; 3289 } 3290 // Isolated processes don't get any permissions. 3291 if (UserHandle.isIsolated(uid)) { 3292 return PackageManager.PERMISSION_DENIED; 3293 } 3294 // If there is a uid that owns whatever is being accessed, it has 3295 // blanket access to it regardless of the permissions it requires. 3296 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3297 return PackageManager.PERMISSION_GRANTED; 3298 } 3299 // If the target is not exported, then nobody else can get to it. 3300 if (!exported) { 3301 /* 3302 RuntimeException here = new RuntimeException("here"); 3303 here.fillInStackTrace(); 3304 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3305 here); 3306 */ 3307 return PackageManager.PERMISSION_DENIED; 3308 } 3309 if (permission == null) { 3310 return PackageManager.PERMISSION_GRANTED; 3311 } 3312 try { 3313 return AppGlobals.getPackageManager() 3314 .checkUidPermission(permission, uid); 3315 } catch (RemoteException e) { 3316 throw e.rethrowFromSystemServer(); 3317 } 3318 } 3319 3320 /** @hide */ 3321 public static int checkUidPermission(String permission, int uid) { 3322 try { 3323 return AppGlobals.getPackageManager() 3324 .checkUidPermission(permission, uid); 3325 } catch (RemoteException e) { 3326 throw e.rethrowFromSystemServer(); 3327 } 3328 } 3329 3330 /** 3331 * @hide 3332 * Helper for dealing with incoming user arguments to system service calls. 3333 * Takes care of checking permissions and converting USER_CURRENT to the 3334 * actual current user. 3335 * 3336 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3337 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3338 * @param userId The user id argument supplied by the caller -- this is the user 3339 * they want to run as. 3340 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3341 * to get a USER_ALL returned and deal with it correctly. If false, 3342 * an exception will be thrown if USER_ALL is supplied. 3343 * @param requireFull If true, the caller must hold 3344 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3345 * different user than their current process; otherwise they must hold 3346 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3347 * @param name Optional textual name of the incoming call; only for generating error messages. 3348 * @param callerPackage Optional package name of caller; only for error messages. 3349 * 3350 * @return Returns the user ID that the call should run as. Will always be a concrete 3351 * user number, unless <var>allowAll</var> is true in which case it could also be 3352 * USER_ALL. 3353 */ 3354 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3355 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3356 if (UserHandle.getUserId(callingUid) == userId) { 3357 return userId; 3358 } 3359 try { 3360 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3361 callingUid, userId, allowAll, requireFull, name, callerPackage); 3362 } catch (RemoteException e) { 3363 throw e.rethrowFromSystemServer(); 3364 } 3365 } 3366 3367 /** 3368 * Gets the userId of the current foreground user. Requires system permissions. 3369 * @hide 3370 */ 3371 @SystemApi 3372 public static int getCurrentUser() { 3373 UserInfo ui; 3374 try { 3375 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3376 return ui != null ? ui.id : 0; 3377 } catch (RemoteException e) { 3378 throw e.rethrowFromSystemServer(); 3379 } 3380 } 3381 3382 /** 3383 * @param userid the user's id. Zero indicates the default user. 3384 * @hide 3385 */ 3386 public boolean switchUser(int userid) { 3387 try { 3388 return ActivityManagerNative.getDefault().switchUser(userid); 3389 } catch (RemoteException e) { 3390 throw e.rethrowFromSystemServer(); 3391 } 3392 } 3393 3394 /** 3395 * Logs out current current foreground user by switching to the system user and stopping the 3396 * user being switched from. 3397 * @hide 3398 */ 3399 public static void logoutCurrentUser() { 3400 int currentUser = ActivityManager.getCurrentUser(); 3401 if (currentUser != UserHandle.USER_SYSTEM) { 3402 try { 3403 ActivityManagerNative.getDefault().switchUser(UserHandle.USER_SYSTEM); 3404 ActivityManagerNative.getDefault().stopUser(currentUser, /* force= */ false, null); 3405 } catch (RemoteException e) { 3406 e.rethrowFromSystemServer(); 3407 } 3408 } 3409 } 3410 3411 /** {@hide} */ 3412 public static final int FLAG_OR_STOPPED = 1 << 0; 3413 /** {@hide} */ 3414 public static final int FLAG_AND_LOCKED = 1 << 1; 3415 /** {@hide} */ 3416 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3417 3418 /** 3419 * Return whether the given user is actively running. This means that 3420 * the user is in the "started" state, not "stopped" -- it is currently 3421 * allowed to run code through scheduled alarms, receiving broadcasts, 3422 * etc. A started user may be either the current foreground user or a 3423 * background user; the result here does not distinguish between the two. 3424 * @param userid the user's id. Zero indicates the default user. 3425 * @hide 3426 */ 3427 public boolean isUserRunning(int userId) { 3428 try { 3429 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3430 } catch (RemoteException e) { 3431 throw e.rethrowFromSystemServer(); 3432 } 3433 } 3434 3435 /** {@hide} */ 3436 public boolean isUserRunningAndLocked(int userId) { 3437 try { 3438 return ActivityManagerNative.getDefault().isUserRunning(userId, 3439 ActivityManager.FLAG_AND_LOCKED); 3440 } catch (RemoteException e) { 3441 throw e.rethrowFromSystemServer(); 3442 } 3443 } 3444 3445 /** {@hide} */ 3446 public boolean isUserRunningAndUnlocked(int userId) { 3447 try { 3448 return ActivityManagerNative.getDefault().isUserRunning(userId, 3449 ActivityManager.FLAG_AND_UNLOCKED); 3450 } catch (RemoteException e) { 3451 throw e.rethrowFromSystemServer(); 3452 } 3453 } 3454 3455 /** {@hide} */ 3456 public boolean isVrModePackageEnabled(ComponentName component) { 3457 try { 3458 return ActivityManagerNative.getDefault().isVrModePackageEnabled(component); 3459 } catch (RemoteException e) { 3460 throw e.rethrowFromSystemServer(); 3461 } 3462 } 3463 3464 /** 3465 * Perform a system dump of various state associated with the given application 3466 * package name. This call blocks while the dump is being performed, so should 3467 * not be done on a UI thread. The data will be written to the given file 3468 * descriptor as text. An application must hold the 3469 * {@link android.Manifest.permission#DUMP} permission to make this call. 3470 * @param fd The file descriptor that the dump should be written to. The file 3471 * descriptor is <em>not</em> closed by this function; the caller continues to 3472 * own it. 3473 * @param packageName The name of the package that is to be dumped. 3474 */ 3475 public void dumpPackageState(FileDescriptor fd, String packageName) { 3476 dumpPackageStateStatic(fd, packageName); 3477 } 3478 3479 /** 3480 * @hide 3481 */ 3482 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3483 FileOutputStream fout = new FileOutputStream(fd); 3484 PrintWriter pw = new FastPrintWriter(fout); 3485 dumpService(pw, fd, "package", new String[] { packageName }); 3486 pw.println(); 3487 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3488 "-a", "package", packageName }); 3489 pw.println(); 3490 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3491 pw.println(); 3492 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3493 pw.println(); 3494 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3495 pw.println(); 3496 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3497 pw.flush(); 3498 } 3499 3500 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3501 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3502 IBinder service = ServiceManager.checkService(name); 3503 if (service == null) { 3504 pw.println(" (Service not found)"); 3505 return; 3506 } 3507 TransferPipe tp = null; 3508 try { 3509 pw.flush(); 3510 tp = new TransferPipe(); 3511 tp.setBufferPrefix(" "); 3512 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3513 tp.go(fd, 10000); 3514 } catch (Throwable e) { 3515 if (tp != null) { 3516 tp.kill(); 3517 } 3518 pw.println("Failure dumping service:"); 3519 e.printStackTrace(pw); 3520 } 3521 } 3522 3523 /** 3524 * Request that the system start watching for the calling process to exceed a pss 3525 * size as given here. Once called, the system will look for any occasions where it 3526 * sees the associated process with a larger pss size and, when this happens, automatically 3527 * pull a heap dump from it and allow the user to share the data. Note that this request 3528 * continues running even if the process is killed and restarted. To remove the watch, 3529 * use {@link #clearWatchHeapLimit()}. 3530 * 3531 * <p>This API only work if the calling process has been marked as 3532 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3533 * (userdebug or eng) build.</p> 3534 * 3535 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3536 * handle heap limit reports themselves.</p> 3537 * 3538 * @param pssSize The size in bytes to set the limit at. 3539 */ 3540 public void setWatchHeapLimit(long pssSize) { 3541 try { 3542 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3543 mContext.getPackageName()); 3544 } catch (RemoteException e) { 3545 throw e.rethrowFromSystemServer(); 3546 } 3547 } 3548 3549 /** 3550 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3551 * If your package has an activity handling this action, it will be launched with the 3552 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3553 * match the activty must support this action and a MIME type of "*/*". 3554 */ 3555 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3556 3557 /** 3558 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3559 */ 3560 public void clearWatchHeapLimit() { 3561 try { 3562 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3563 } catch (RemoteException e) { 3564 throw e.rethrowFromSystemServer(); 3565 } 3566 } 3567 3568 /** 3569 * @hide 3570 */ 3571 public void startLockTaskMode(int taskId) { 3572 try { 3573 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3574 } catch (RemoteException e) { 3575 throw e.rethrowFromSystemServer(); 3576 } 3577 } 3578 3579 /** 3580 * @hide 3581 */ 3582 public void stopLockTaskMode() { 3583 try { 3584 ActivityManagerNative.getDefault().stopLockTaskMode(); 3585 } catch (RemoteException e) { 3586 throw e.rethrowFromSystemServer(); 3587 } 3588 } 3589 3590 /** 3591 * Return whether currently in lock task mode. When in this mode 3592 * no new tasks can be created or switched to. 3593 * 3594 * @see Activity#startLockTask() 3595 * 3596 * @deprecated Use {@link #getLockTaskModeState} instead. 3597 */ 3598 public boolean isInLockTaskMode() { 3599 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3600 } 3601 3602 /** 3603 * Return the current state of task locking. The three possible outcomes 3604 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3605 * and {@link #LOCK_TASK_MODE_PINNED}. 3606 * 3607 * @see Activity#startLockTask() 3608 */ 3609 public int getLockTaskModeState() { 3610 try { 3611 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3612 } catch (RemoteException e) { 3613 throw e.rethrowFromSystemServer(); 3614 } 3615 } 3616 3617 /** 3618 * The AppTask allows you to manage your own application's tasks. 3619 * See {@link android.app.ActivityManager#getAppTasks()} 3620 */ 3621 public static class AppTask { 3622 private IAppTask mAppTaskImpl; 3623 3624 /** @hide */ 3625 public AppTask(IAppTask task) { 3626 mAppTaskImpl = task; 3627 } 3628 3629 /** 3630 * Finishes all activities in this task and removes it from the recent tasks list. 3631 */ 3632 public void finishAndRemoveTask() { 3633 try { 3634 mAppTaskImpl.finishAndRemoveTask(); 3635 } catch (RemoteException e) { 3636 throw e.rethrowFromSystemServer(); 3637 } 3638 } 3639 3640 /** 3641 * Get the RecentTaskInfo associated with this task. 3642 * 3643 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3644 */ 3645 public RecentTaskInfo getTaskInfo() { 3646 try { 3647 return mAppTaskImpl.getTaskInfo(); 3648 } catch (RemoteException e) { 3649 throw e.rethrowFromSystemServer(); 3650 } 3651 } 3652 3653 /** 3654 * Bring this task to the foreground. If it contains activities, they will be 3655 * brought to the foreground with it and their instances re-created if needed. 3656 * If it doesn't contain activities, the root activity of the task will be 3657 * re-launched. 3658 */ 3659 public void moveToFront() { 3660 try { 3661 mAppTaskImpl.moveToFront(); 3662 } catch (RemoteException e) { 3663 throw e.rethrowFromSystemServer(); 3664 } 3665 } 3666 3667 /** 3668 * Start an activity in this task. Brings the task to the foreground. If this task 3669 * is not currently active (that is, its id < 0), then a new activity for the given 3670 * Intent will be launched as the root of the task and the task brought to the 3671 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3672 * an activity to launch in a new task, then a new activity for the given Intent will 3673 * be launched on top of the task and the task brought to the foreground. If this 3674 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3675 * or would otherwise be launched in to a new task, then the activity not launched but 3676 * this task be brought to the foreground and a new intent delivered to the top 3677 * activity if appropriate. 3678 * 3679 * <p>In other words, you generally want to use an Intent here that does not specify 3680 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3681 * and let the system do the right thing.</p> 3682 * 3683 * @param intent The Intent describing the new activity to be launched on the task. 3684 * @param options Optional launch options. 3685 * 3686 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3687 */ 3688 public void startActivity(Context context, Intent intent, Bundle options) { 3689 ActivityThread thread = ActivityThread.currentActivityThread(); 3690 thread.getInstrumentation().execStartActivityFromAppTask(context, 3691 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3692 } 3693 3694 /** 3695 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3696 * Intent of this AppTask. 3697 * 3698 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3699 * be set; otherwise, it will be cleared. 3700 */ 3701 public void setExcludeFromRecents(boolean exclude) { 3702 try { 3703 mAppTaskImpl.setExcludeFromRecents(exclude); 3704 } catch (RemoteException e) { 3705 throw e.rethrowFromSystemServer(); 3706 } 3707 } 3708 } 3709} 3710