ActivityManager.java revision 7c40291b0a105a8dfefda76c4ad8c42bf04a4f55
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.RequiresPermission; 24import android.annotation.SystemApi; 25import android.content.pm.ActivityInfo; 26import android.content.res.Configuration; 27import android.graphics.Canvas; 28import android.graphics.Matrix; 29import android.graphics.Point; 30import android.os.BatteryStats; 31import android.os.IBinder; 32import android.os.ParcelFileDescriptor; 33 34import com.android.internal.app.procstats.ProcessStats; 35import com.android.internal.os.TransferPipe; 36import com.android.internal.util.FastPrintWriter; 37 38import android.content.ComponentName; 39import android.content.Context; 40import android.content.Intent; 41import android.content.UriPermission; 42import android.content.pm.ApplicationInfo; 43import android.content.pm.ConfigurationInfo; 44import android.content.pm.IPackageDataObserver; 45import android.content.pm.PackageManager; 46import android.content.pm.ParceledListSlice; 47import android.content.pm.UserInfo; 48import android.content.res.Resources; 49import android.graphics.Bitmap; 50import android.graphics.Color; 51import android.graphics.Rect; 52import android.os.Bundle; 53import android.os.Debug; 54import android.os.Handler; 55import android.os.Parcel; 56import android.os.Parcelable; 57import android.os.Process; 58import android.os.RemoteException; 59import android.os.ServiceManager; 60import android.os.SystemProperties; 61import android.os.UserHandle; 62import android.text.TextUtils; 63import android.util.DisplayMetrics; 64import android.util.Size; 65 66import org.xmlpull.v1.XmlSerializer; 67 68import java.io.FileDescriptor; 69import java.io.FileOutputStream; 70import java.io.IOException; 71import java.io.PrintWriter; 72import java.lang.annotation.Retention; 73import java.lang.annotation.RetentionPolicy; 74import java.util.ArrayList; 75import java.util.List; 76 77/** 78 * Interact with the overall activities running in the system. 79 */ 80public class ActivityManager { 81 private static String TAG = "ActivityManager"; 82 83 private static int gMaxRecentTasks = -1; 84 85 private final Context mContext; 86 private final Handler mHandler; 87 88 /** 89 * Defines acceptable types of bugreports. 90 * @hide 91 */ 92 @Retention(RetentionPolicy.SOURCE) 93 @IntDef({ 94 BUGREPORT_OPTION_FULL, 95 BUGREPORT_OPTION_INTERACTIVE, 96 BUGREPORT_OPTION_REMOTE 97 }) 98 public @interface BugreportMode {} 99 /** 100 * Takes a bugreport without user interference (and hence causing less 101 * interference to the system), but includes all sections. 102 * @hide 103 */ 104 public static final int BUGREPORT_OPTION_FULL = 0; 105 /** 106 * Allows user to monitor progress and enter additional data; might not include all 107 * sections. 108 * @hide 109 */ 110 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 111 /** 112 * Takes a bugreport requested remotely by administrator of the Device Owner app, 113 * not the device's user. 114 * @hide 115 */ 116 public static final int BUGREPORT_OPTION_REMOTE = 2; 117 118 /** 119 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 120 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 121 * uninstalled in lieu of the declaring one. The package named here must be 122 * signed with the same certificate as the one declaring the {@code <meta-data>}. 123 */ 124 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 125 126 /** 127 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 128 * @hide 129 */ 130 public static final int START_VOICE_HIDDEN_SESSION = -10; 131 132 /** 133 * Result for IActivityManager.startVoiceActivity: active session does not match 134 * the requesting token. 135 * @hide 136 */ 137 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 138 139 /** 140 * Result for IActivityManager.startActivity: trying to start a background user 141 * activity that shouldn't be displayed for all users. 142 * @hide 143 */ 144 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 145 146 /** 147 * Result for IActivityManager.startActivity: trying to start an activity under voice 148 * control when that activity does not support the VOICE category. 149 * @hide 150 */ 151 public static final int START_NOT_VOICE_COMPATIBLE = -7; 152 153 /** 154 * Result for IActivityManager.startActivity: an error where the 155 * start had to be canceled. 156 * @hide 157 */ 158 public static final int START_CANCELED = -6; 159 160 /** 161 * Result for IActivityManager.startActivity: an error where the 162 * thing being started is not an activity. 163 * @hide 164 */ 165 public static final int START_NOT_ACTIVITY = -5; 166 167 /** 168 * Result for IActivityManager.startActivity: an error where the 169 * caller does not have permission to start the activity. 170 * @hide 171 */ 172 public static final int START_PERMISSION_DENIED = -4; 173 174 /** 175 * Result for IActivityManager.startActivity: an error where the 176 * caller has requested both to forward a result and to receive 177 * a result. 178 * @hide 179 */ 180 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 181 182 /** 183 * Result for IActivityManager.startActivity: an error where the 184 * requested class is not found. 185 * @hide 186 */ 187 public static final int START_CLASS_NOT_FOUND = -2; 188 189 /** 190 * Result for IActivityManager.startActivity: an error where the 191 * given Intent could not be resolved to an activity. 192 * @hide 193 */ 194 public static final int START_INTENT_NOT_RESOLVED = -1; 195 196 /** 197 * Result for IActivityManaqer.startActivity: the activity was started 198 * successfully as normal. 199 * @hide 200 */ 201 public static final int START_SUCCESS = 0; 202 203 /** 204 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 205 * be executed if it is the recipient, and that is indeed the case. 206 * @hide 207 */ 208 public static final int START_RETURN_INTENT_TO_CALLER = 1; 209 210 /** 211 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 212 * a task was simply brought to the foreground. 213 * @hide 214 */ 215 public static final int START_TASK_TO_FRONT = 2; 216 217 /** 218 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 219 * the given Intent was given to the existing top activity. 220 * @hide 221 */ 222 public static final int START_DELIVERED_TO_TOP = 3; 223 224 /** 225 * Result for IActivityManaqer.startActivity: request was canceled because 226 * app switches are temporarily canceled to ensure the user's last request 227 * (such as pressing home) is performed. 228 * @hide 229 */ 230 public static final int START_SWITCHES_CANCELED = 4; 231 232 /** 233 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 234 * while in Lock Task Mode. 235 * @hide 236 */ 237 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 238 239 /** 240 * Flag for IActivityManaqer.startActivity: do special start mode where 241 * a new activity is launched only if it is needed. 242 * @hide 243 */ 244 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 245 246 /** 247 * Flag for IActivityManaqer.startActivity: launch the app for 248 * debugging. 249 * @hide 250 */ 251 public static final int START_FLAG_DEBUG = 1<<1; 252 253 /** 254 * Flag for IActivityManaqer.startActivity: launch the app for 255 * allocation tracking. 256 * @hide 257 */ 258 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 259 260 /** 261 * Flag for IActivityManaqer.startActivity: launch the app with 262 * native debugging support. 263 * @hide 264 */ 265 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 266 267 /** 268 * Result for IActivityManaqer.broadcastIntent: success! 269 * @hide 270 */ 271 public static final int BROADCAST_SUCCESS = 0; 272 273 /** 274 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 275 * a sticky intent without appropriate permission. 276 * @hide 277 */ 278 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 279 280 /** 281 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 282 * to a stopped user. Fail. 283 * @hide 284 */ 285 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 286 287 /** 288 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 289 * for a sendBroadcast operation. 290 * @hide 291 */ 292 public static final int INTENT_SENDER_BROADCAST = 1; 293 294 /** 295 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 296 * for a startActivity operation. 297 * @hide 298 */ 299 public static final int INTENT_SENDER_ACTIVITY = 2; 300 301 /** 302 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 303 * for an activity result operation. 304 * @hide 305 */ 306 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 307 308 /** 309 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 310 * for a startService operation. 311 * @hide 312 */ 313 public static final int INTENT_SENDER_SERVICE = 4; 314 315 /** @hide User operation call: success! */ 316 public static final int USER_OP_SUCCESS = 0; 317 318 /** @hide User operation call: given user id is not known. */ 319 public static final int USER_OP_UNKNOWN_USER = -1; 320 321 /** @hide User operation call: given user id is the current user, can't be stopped. */ 322 public static final int USER_OP_IS_CURRENT = -2; 323 324 /** @hide User operation call: system user can't be stopped. */ 325 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 326 327 /** @hide User operation call: one of related users cannot be stopped. */ 328 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 329 330 /** @hide Process does not exist. */ 331 public static final int PROCESS_STATE_NONEXISTENT = -1; 332 333 /** @hide Process is a persistent system process. */ 334 public static final int PROCESS_STATE_PERSISTENT = 0; 335 336 /** @hide Process is a persistent system process and is doing UI. */ 337 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 338 339 /** @hide Process is hosting the current top activities. Note that this covers 340 * all activities that are visible to the user. */ 341 public static final int PROCESS_STATE_TOP = 2; 342 343 /** @hide Process is hosting a foreground service due to a system binding. */ 344 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 345 346 /** @hide Process is hosting a foreground service. */ 347 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 348 349 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 350 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 351 352 /** @hide Process is important to the user, and something they are aware of. */ 353 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 354 355 /** @hide Process is important to the user, but not something they are aware of. */ 356 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 357 358 /** @hide Process is in the background running a backup/restore operation. */ 359 public static final int PROCESS_STATE_BACKUP = 8; 360 361 /** @hide Process is in the background, but it can't restore its state so we want 362 * to try to avoid killing it. */ 363 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 364 365 /** @hide Process is in the background running a service. Unlike oom_adj, this level 366 * is used for both the normal running in background state and the executing 367 * operations state. */ 368 public static final int PROCESS_STATE_SERVICE = 10; 369 370 /** @hide Process is in the background running a receiver. Note that from the 371 * perspective of oom_adj receivers run at a higher foreground level, but for our 372 * prioritization here that is not necessary and putting them below services means 373 * many fewer changes in some process states as they receive broadcasts. */ 374 public static final int PROCESS_STATE_RECEIVER = 11; 375 376 /** @hide Process is in the background but hosts the home activity. */ 377 public static final int PROCESS_STATE_HOME = 12; 378 379 /** @hide Process is in the background but hosts the last shown activity. */ 380 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 381 382 /** @hide Process is being cached for later use and contains activities. */ 383 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 384 385 /** @hide Process is being cached for later use and is a client of another cached 386 * process that contains activities. */ 387 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 388 389 /** @hide Process is being cached for later use and is empty. */ 390 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 391 392 /** @hide The lowest process state number */ 393 public static final int MIN_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 394 395 /** @hide The highest process state number */ 396 public static final int MAX_PROCESS_STATE = PROCESS_STATE_CACHED_EMPTY; 397 398 /** @hide Should this process state be considered a background state? */ 399 public static final boolean isProcStateBackground(int procState) { 400 return procState >= PROCESS_STATE_BACKUP; 401 } 402 403 /** @hide requestType for assist context: only basic information. */ 404 public static final int ASSIST_CONTEXT_BASIC = 0; 405 406 /** @hide requestType for assist context: generate full AssistStructure. */ 407 public static final int ASSIST_CONTEXT_FULL = 1; 408 409 /** @hide Flag for registerUidObserver: report changes in process state. */ 410 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 411 412 /** @hide Flag for registerUidObserver: report uid gone. */ 413 public static final int UID_OBSERVER_GONE = 1<<1; 414 415 /** @hide Flag for registerUidObserver: report uid has become idle. */ 416 public static final int UID_OBSERVER_IDLE = 1<<2; 417 418 /** @hide Flag for registerUidObserver: report uid has become active. */ 419 public static final int UID_OBSERVER_ACTIVE = 1<<3; 420 421 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 422 public static final int APP_START_MODE_NORMAL = 0; 423 424 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 425 public static final int APP_START_MODE_DELAYED = 1; 426 427 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 428 * launches. */ 429 public static final int APP_START_MODE_DISABLED = 2; 430 431 /** 432 * Lock task mode is not active. 433 */ 434 public static final int LOCK_TASK_MODE_NONE = 0; 435 436 /** 437 * Full lock task mode is active. 438 */ 439 public static final int LOCK_TASK_MODE_LOCKED = 1; 440 441 /** 442 * App pinning mode is active. 443 */ 444 public static final int LOCK_TASK_MODE_PINNED = 2; 445 446 Point mAppTaskThumbnailSize; 447 448 /*package*/ ActivityManager(Context context, Handler handler) { 449 mContext = context; 450 mHandler = handler; 451 } 452 453 /** 454 * Screen compatibility mode: the application most always run in 455 * compatibility mode. 456 * @hide 457 */ 458 public static final int COMPAT_MODE_ALWAYS = -1; 459 460 /** 461 * Screen compatibility mode: the application can never run in 462 * compatibility mode. 463 * @hide 464 */ 465 public static final int COMPAT_MODE_NEVER = -2; 466 467 /** 468 * Screen compatibility mode: unknown. 469 * @hide 470 */ 471 public static final int COMPAT_MODE_UNKNOWN = -3; 472 473 /** 474 * Screen compatibility mode: the application currently has compatibility 475 * mode disabled. 476 * @hide 477 */ 478 public static final int COMPAT_MODE_DISABLED = 0; 479 480 /** 481 * Screen compatibility mode: the application currently has compatibility 482 * mode enabled. 483 * @hide 484 */ 485 public static final int COMPAT_MODE_ENABLED = 1; 486 487 /** 488 * Screen compatibility mode: request to toggle the application's 489 * compatibility mode. 490 * @hide 491 */ 492 public static final int COMPAT_MODE_TOGGLE = 2; 493 494 /** @hide */ 495 public static class StackId { 496 /** Invalid stack ID. */ 497 public static final int INVALID_STACK_ID = -1; 498 499 /** First static stack ID. */ 500 public static final int FIRST_STATIC_STACK_ID = 0; 501 502 /** Home activity stack ID. */ 503 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 504 505 /** ID of stack where fullscreen activities are normally launched into. */ 506 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 507 508 /** ID of stack where freeform/resized activities are normally launched into. */ 509 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 510 511 /** ID of stack that occupies a dedicated region of the screen. */ 512 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 513 514 /** ID of stack that always on top (always visible) when it exist. */ 515 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 516 517 /** Last static stack stack ID. */ 518 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 519 520 /** Start of ID range used by stacks that are created dynamically. */ 521 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 522 523 public static boolean isStaticStack(int stackId) { 524 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 525 } 526 527 /** 528 * Returns true if the activities contained in the input stack display a shadow around 529 * their border. 530 */ 531 public static boolean hasWindowShadow(int stackId) { 532 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 533 } 534 535 /** 536 * Returns true if the activities contained in the input stack display a decor view. 537 */ 538 public static boolean hasWindowDecor(int stackId) { 539 return stackId == FREEFORM_WORKSPACE_STACK_ID; 540 } 541 542 /** 543 * Returns true if the tasks contained in the stack can be resized independently of the 544 * stack. 545 */ 546 public static boolean isTaskResizeAllowed(int stackId) { 547 return stackId == FREEFORM_WORKSPACE_STACK_ID; 548 } 549 550 /** Returns true if the task bounds should persist across power cycles. */ 551 public static boolean persistTaskBounds(int stackId) { 552 return stackId == FREEFORM_WORKSPACE_STACK_ID; 553 } 554 555 /** 556 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 557 */ 558 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 559 return stackId == PINNED_STACK_ID; 560 } 561 562 /** 563 * Returns true if we try to maintain focus in the current stack when the top activity 564 * finishes. 565 */ 566 public static boolean keepFocusInStackIfPossible(int stackId) { 567 return stackId == FREEFORM_WORKSPACE_STACK_ID 568 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 569 } 570 571 /** 572 * Returns true if Stack size is affected by the docked stack changing size. 573 */ 574 public static boolean isResizeableByDockedStack(int stackId) { 575 return isStaticStack(stackId) && 576 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 577 } 578 579 /** 580 * Returns true if the size of tasks in the input stack are affected by the docked stack 581 * changing size. 582 */ 583 public static boolean isTaskResizeableByDockedStack(int stackId) { 584 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 585 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 586 } 587 588 /** 589 * Returns true if the windows of tasks being moved to the target stack from the source 590 * stack should be replaced, meaning that window manager will keep the old window around 591 * until the new is ready. 592 */ 593 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 594 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 595 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 596 } 597 598 /** 599 * Return whether a stackId is a stack containing floating windows. Floating windows 600 * are laid out differently as they are allowed to extend past the display bounds 601 * without overscan insets. 602 */ 603 public static boolean tasksAreFloating(int stackId) { 604 return stackId == FREEFORM_WORKSPACE_STACK_ID 605 || stackId == PINNED_STACK_ID; 606 } 607 608 /** 609 * Returns true if animation specs should be constructed for app transition that moves 610 * the task to the specified stack. 611 */ 612 public static boolean useAnimationSpecForAppTransition(int stackId) { 613 614 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 615 // reboots. 616 return stackId == FREEFORM_WORKSPACE_STACK_ID 617 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 618 || stackId == INVALID_STACK_ID; 619 } 620 621 /** Returns true if the windows in the stack can receive input keys. */ 622 public static boolean canReceiveKeys(int stackId) { 623 return stackId != PINNED_STACK_ID; 624 } 625 626 /** 627 * Returns true if the stack can be visible above lockscreen. 628 */ 629 public static boolean isAllowedOverLockscreen(int stackId) { 630 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 631 } 632 633 public static boolean isAlwaysOnTop(int stackId) { 634 return stackId == PINNED_STACK_ID; 635 } 636 637 /** 638 * Returns true if the top task in the task is allowed to return home when finished and 639 * there are other tasks in the stack. 640 */ 641 public static boolean allowTopTaskToReturnHome(int stackId) { 642 return stackId != PINNED_STACK_ID; 643 } 644 645 /** 646 * Returns true if the stack should be resized to match the bounds specified by 647 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 648 */ 649 public static boolean resizeStackWithLaunchBounds(int stackId) { 650 return stackId == PINNED_STACK_ID; 651 } 652 653 /** 654 * Returns true if any visible windows belonging to apps in this stack should be kept on 655 * screen when the app is killed due to something like the low memory killer. 656 */ 657 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 658 return stackId != PINNED_STACK_ID; 659 } 660 661 /** 662 * Returns true if the backdrop on the client side should match the frame of the window. 663 * Returns false, if the backdrop should be fullscreen. 664 */ 665 public static boolean useWindowFrameForBackdrop(int stackId) { 666 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 667 } 668 669 /** 670 * Returns true if a window from the specified stack with {@param stackId} are normally 671 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 672 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 673 * etc. 674 */ 675 public static boolean normallyFullscreenWindows(int stackId) { 676 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 677 && stackId != DOCKED_STACK_ID; 678 } 679 680 /** 681 * Returns true if the input stack id should only be present on a device that supports 682 * multi-window mode. 683 * @see android.app.ActivityManager#supportsMultiWindow 684 */ 685 public static boolean isMultiWindowStack(int stackId) { 686 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 687 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 688 } 689 690 /** 691 * Returns true if activities contained in this stack can request visible behind by 692 * calling {@link Activity#requestVisibleBehind}. 693 */ 694 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 695 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 696 } 697 698 /** 699 * Returns true if this stack may be scaled without resizing, 700 * and windows within may need to be configured as such. 701 */ 702 public static boolean windowsAreScaleable(int stackId) { 703 return stackId == PINNED_STACK_ID; 704 } 705 } 706 707 /** 708 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 709 * specifies the position of the created docked stack at the top half of the screen if 710 * in portrait mode or at the left half of the screen if in landscape mode. 711 * @hide 712 */ 713 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 714 715 /** 716 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 717 * specifies the position of the created docked stack at the bottom half of the screen if 718 * in portrait mode or at the right half of the screen if in landscape mode. 719 * @hide 720 */ 721 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 722 723 /** 724 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 725 * that the resize doesn't need to preserve the window, and can be skipped if bounds 726 * is unchanged. This mode is used by window manager in most cases. 727 * @hide 728 */ 729 public static final int RESIZE_MODE_SYSTEM = 0; 730 731 /** 732 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 733 * that the resize should preserve the window if possible. 734 * @hide 735 */ 736 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 737 738 /** 739 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 740 * that the resize should be performed even if the bounds appears unchanged. 741 * @hide 742 */ 743 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 744 745 /** 746 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 747 * manager during a screen rotation. 748 * @hide 749 */ 750 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 751 752 /** 753 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 754 * resize is due to a drag action. 755 * @hide 756 */ 757 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 758 759 /** 760 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 761 * that the resize should preserve the window if possible, and should not be skipped 762 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 763 * is ending. 764 * @hide 765 */ 766 public static final int RESIZE_MODE_USER_FORCED = 767 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 768 769 /** @hide */ 770 public int getFrontActivityScreenCompatMode() { 771 try { 772 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 773 } catch (RemoteException e) { 774 throw e.rethrowFromSystemServer(); 775 } 776 } 777 778 /** @hide */ 779 public void setFrontActivityScreenCompatMode(int mode) { 780 try { 781 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 782 } catch (RemoteException e) { 783 throw e.rethrowFromSystemServer(); 784 } 785 } 786 787 /** @hide */ 788 public int getPackageScreenCompatMode(String packageName) { 789 try { 790 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 791 } catch (RemoteException e) { 792 throw e.rethrowFromSystemServer(); 793 } 794 } 795 796 /** @hide */ 797 public void setPackageScreenCompatMode(String packageName, int mode) { 798 try { 799 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 800 } catch (RemoteException e) { 801 throw e.rethrowFromSystemServer(); 802 } 803 } 804 805 /** @hide */ 806 public boolean getPackageAskScreenCompat(String packageName) { 807 try { 808 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 809 } catch (RemoteException e) { 810 throw e.rethrowFromSystemServer(); 811 } 812 } 813 814 /** @hide */ 815 public void setPackageAskScreenCompat(String packageName, boolean ask) { 816 try { 817 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 818 } catch (RemoteException e) { 819 throw e.rethrowFromSystemServer(); 820 } 821 } 822 823 /** 824 * Return the approximate per-application memory class of the current 825 * device. This gives you an idea of how hard a memory limit you should 826 * impose on your application to let the overall system work best. The 827 * returned value is in megabytes; the baseline Android memory class is 828 * 16 (which happens to be the Java heap limit of those devices); some 829 * device with more memory may return 24 or even higher numbers. 830 */ 831 public int getMemoryClass() { 832 return staticGetMemoryClass(); 833 } 834 835 /** @hide */ 836 static public int staticGetMemoryClass() { 837 // Really brain dead right now -- just take this from the configured 838 // vm heap size, and assume it is in megabytes and thus ends with "m". 839 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 840 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 841 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 842 } 843 return staticGetLargeMemoryClass(); 844 } 845 846 /** 847 * Return the approximate per-application memory class of the current 848 * device when an application is running with a large heap. This is the 849 * space available for memory-intensive applications; most applications 850 * should not need this amount of memory, and should instead stay with the 851 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 852 * This may be the same size as {@link #getMemoryClass()} on memory 853 * constrained devices, or it may be significantly larger on devices with 854 * a large amount of available RAM. 855 * 856 * <p>The is the size of the application's Dalvik heap if it has 857 * specified <code>android:largeHeap="true"</code> in its manifest. 858 */ 859 public int getLargeMemoryClass() { 860 return staticGetLargeMemoryClass(); 861 } 862 863 /** @hide */ 864 static public int staticGetLargeMemoryClass() { 865 // Really brain dead right now -- just take this from the configured 866 // vm heap size, and assume it is in megabytes and thus ends with "m". 867 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 868 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 869 } 870 871 /** 872 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 873 * is ultimately up to the device configuration, but currently it generally means 874 * something in the class of a 512MB device with about a 800x480 or less screen. 875 * This is mostly intended to be used by apps to determine whether they should turn 876 * off certain features that require more RAM. 877 */ 878 public boolean isLowRamDevice() { 879 return isLowRamDeviceStatic(); 880 } 881 882 /** @hide */ 883 public static boolean isLowRamDeviceStatic() { 884 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 885 } 886 887 /** 888 * Used by persistent processes to determine if they are running on a 889 * higher-end device so should be okay using hardware drawing acceleration 890 * (which tends to consume a lot more RAM). 891 * @hide 892 */ 893 static public boolean isHighEndGfx() { 894 return !isLowRamDeviceStatic() && 895 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 896 } 897 898 /** 899 * Return the maximum number of recents entries that we will maintain and show. 900 * @hide 901 */ 902 static public int getMaxRecentTasksStatic() { 903 if (gMaxRecentTasks < 0) { 904 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 905 } 906 return gMaxRecentTasks; 907 } 908 909 /** 910 * Return the default limit on the number of recents that an app can make. 911 * @hide 912 */ 913 static public int getDefaultAppRecentsLimitStatic() { 914 return getMaxRecentTasksStatic() / 6; 915 } 916 917 /** 918 * Return the maximum limit on the number of recents that an app can make. 919 * @hide 920 */ 921 static public int getMaxAppRecentsLimitStatic() { 922 return getMaxRecentTasksStatic() / 2; 923 } 924 925 /** 926 * Returns true if the system supports at least one form of multi-window. 927 * E.g. freeform, split-screen, picture-in-picture. 928 * @hide 929 */ 930 static public boolean supportsMultiWindow() { 931 return !isLowRamDeviceStatic() 932 && Resources.getSystem().getBoolean( 933 com.android.internal.R.bool.config_supportsMultiWindow); 934 } 935 936 /** 937 * Information you can set and retrieve about the current activity within the recent task list. 938 */ 939 public static class TaskDescription implements Parcelable { 940 /** @hide */ 941 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 942 private static final String ATTR_TASKDESCRIPTIONLABEL = 943 ATTR_TASKDESCRIPTION_PREFIX + "label"; 944 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 945 ATTR_TASKDESCRIPTION_PREFIX + "color"; 946 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 947 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 948 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 949 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 950 951 private String mLabel; 952 private Bitmap mIcon; 953 private String mIconFilename; 954 private int mColorPrimary; 955 private int mColorBackground; 956 957 /** 958 * Creates the TaskDescription to the specified values. 959 * 960 * @param label A label and description of the current state of this task. 961 * @param icon An icon that represents the current state of this task. 962 * @param colorPrimary A color to override the theme's primary color. This color must be 963 * opaque. 964 */ 965 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 966 this(label, icon, null, colorPrimary, 0); 967 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 968 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 969 } 970 } 971 972 /** 973 * Creates the TaskDescription to the specified values. 974 * 975 * @param label A label and description of the current state of this activity. 976 * @param icon An icon that represents the current state of this activity. 977 */ 978 public TaskDescription(String label, Bitmap icon) { 979 this(label, icon, null, 0, 0); 980 } 981 982 /** 983 * Creates the TaskDescription to the specified values. 984 * 985 * @param label A label and description of the current state of this activity. 986 */ 987 public TaskDescription(String label) { 988 this(label, null, null, 0, 0); 989 } 990 991 /** 992 * Creates an empty TaskDescription. 993 */ 994 public TaskDescription() { 995 this(null, null, null, 0, 0); 996 } 997 998 /** @hide */ 999 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1000 int colorBackground) { 1001 mLabel = label; 1002 mIcon = icon; 1003 mIconFilename = iconFilename; 1004 mColorPrimary = colorPrimary; 1005 mColorBackground = colorBackground; 1006 } 1007 1008 /** 1009 * Creates a copy of another TaskDescription. 1010 */ 1011 public TaskDescription(TaskDescription td) { 1012 copyFrom(td); 1013 } 1014 1015 /** 1016 * Copies this the values from another TaskDescription. 1017 * @hide 1018 */ 1019 public void copyFrom(TaskDescription other) { 1020 mLabel = other.mLabel; 1021 mIcon = other.mIcon; 1022 mIconFilename = other.mIconFilename; 1023 mColorPrimary = other.mColorPrimary; 1024 mColorBackground = other.mColorBackground; 1025 } 1026 1027 private TaskDescription(Parcel source) { 1028 readFromParcel(source); 1029 } 1030 1031 /** 1032 * Sets the label for this task description. 1033 * @hide 1034 */ 1035 public void setLabel(String label) { 1036 mLabel = label; 1037 } 1038 1039 /** 1040 * Sets the primary color for this task description. 1041 * @hide 1042 */ 1043 public void setPrimaryColor(int primaryColor) { 1044 // Ensure that the given color is valid 1045 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1046 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1047 } 1048 mColorPrimary = primaryColor; 1049 } 1050 1051 /** 1052 * Sets the background color for this task description. 1053 * @hide 1054 */ 1055 public void setBackgroundColor(int backgroundColor) { 1056 // Ensure that the given color is valid 1057 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1058 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1059 } 1060 mColorBackground = backgroundColor; 1061 } 1062 1063 /** 1064 * Sets the icon for this task description. 1065 * @hide 1066 */ 1067 public void setIcon(Bitmap icon) { 1068 mIcon = icon; 1069 } 1070 1071 /** 1072 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1073 * bitmap. 1074 * @hide 1075 */ 1076 public void setIconFilename(String iconFilename) { 1077 mIconFilename = iconFilename; 1078 mIcon = null; 1079 } 1080 1081 /** 1082 * @return The label and description of the current state of this task. 1083 */ 1084 public String getLabel() { 1085 return mLabel; 1086 } 1087 1088 /** 1089 * @return The icon that represents the current state of this task. 1090 */ 1091 public Bitmap getIcon() { 1092 if (mIcon != null) { 1093 return mIcon; 1094 } 1095 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1096 } 1097 1098 /** @hide */ 1099 public String getIconFilename() { 1100 return mIconFilename; 1101 } 1102 1103 /** @hide */ 1104 public Bitmap getInMemoryIcon() { 1105 return mIcon; 1106 } 1107 1108 /** @hide */ 1109 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1110 if (iconFilename != null) { 1111 try { 1112 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1113 userId); 1114 } catch (RemoteException e) { 1115 throw e.rethrowFromSystemServer(); 1116 } 1117 } 1118 return null; 1119 } 1120 1121 /** 1122 * @return The color override on the theme's primary color. 1123 */ 1124 public int getPrimaryColor() { 1125 return mColorPrimary; 1126 } 1127 1128 /** 1129 * @return The background color. 1130 * @hide 1131 */ 1132 public int getBackgroundColor() { 1133 return mColorBackground; 1134 } 1135 1136 /** @hide */ 1137 public void saveToXml(XmlSerializer out) throws IOException { 1138 if (mLabel != null) { 1139 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1140 } 1141 if (mColorPrimary != 0) { 1142 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1143 Integer.toHexString(mColorPrimary)); 1144 } 1145 if (mColorBackground != 0) { 1146 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1147 Integer.toHexString(mColorBackground)); 1148 } 1149 if (mIconFilename != null) { 1150 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1151 } 1152 } 1153 1154 /** @hide */ 1155 public void restoreFromXml(String attrName, String attrValue) { 1156 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1157 setLabel(attrValue); 1158 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1159 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1160 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1161 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1162 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1163 setIconFilename(attrValue); 1164 } 1165 } 1166 1167 @Override 1168 public int describeContents() { 1169 return 0; 1170 } 1171 1172 @Override 1173 public void writeToParcel(Parcel dest, int flags) { 1174 if (mLabel == null) { 1175 dest.writeInt(0); 1176 } else { 1177 dest.writeInt(1); 1178 dest.writeString(mLabel); 1179 } 1180 if (mIcon == null) { 1181 dest.writeInt(0); 1182 } else { 1183 dest.writeInt(1); 1184 mIcon.writeToParcel(dest, 0); 1185 } 1186 dest.writeInt(mColorPrimary); 1187 dest.writeInt(mColorBackground); 1188 if (mIconFilename == null) { 1189 dest.writeInt(0); 1190 } else { 1191 dest.writeInt(1); 1192 dest.writeString(mIconFilename); 1193 } 1194 } 1195 1196 public void readFromParcel(Parcel source) { 1197 mLabel = source.readInt() > 0 ? source.readString() : null; 1198 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1199 mColorPrimary = source.readInt(); 1200 mColorBackground = source.readInt(); 1201 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1202 } 1203 1204 public static final Creator<TaskDescription> CREATOR 1205 = new Creator<TaskDescription>() { 1206 public TaskDescription createFromParcel(Parcel source) { 1207 return new TaskDescription(source); 1208 } 1209 public TaskDescription[] newArray(int size) { 1210 return new TaskDescription[size]; 1211 } 1212 }; 1213 1214 @Override 1215 public String toString() { 1216 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1217 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1218 " colorBackground: " + mColorBackground; 1219 } 1220 } 1221 1222 /** 1223 * Information you can retrieve about tasks that the user has most recently 1224 * started or visited. 1225 */ 1226 public static class RecentTaskInfo implements Parcelable { 1227 /** 1228 * If this task is currently running, this is the identifier for it. 1229 * If it is not running, this will be -1. 1230 */ 1231 public int id; 1232 1233 /** 1234 * The true identifier of this task, valid even if it is not running. 1235 */ 1236 public int persistentId; 1237 1238 /** 1239 * The original Intent used to launch the task. You can use this 1240 * Intent to re-launch the task (if it is no longer running) or bring 1241 * the current task to the front. 1242 */ 1243 public Intent baseIntent; 1244 1245 /** 1246 * If this task was started from an alias, this is the actual 1247 * activity component that was initially started; the component of 1248 * the baseIntent in this case is the name of the actual activity 1249 * implementation that the alias referred to. Otherwise, this is null. 1250 */ 1251 public ComponentName origActivity; 1252 1253 /** 1254 * The actual activity component that started the task. 1255 * @hide 1256 */ 1257 @Nullable 1258 public ComponentName realActivity; 1259 1260 /** 1261 * Description of the task's last state. 1262 */ 1263 public CharSequence description; 1264 1265 /** 1266 * The id of the ActivityStack this Task was on most recently. 1267 * @hide 1268 */ 1269 public int stackId; 1270 1271 /** 1272 * The id of the user the task was running as. 1273 * @hide 1274 */ 1275 public int userId; 1276 1277 /** 1278 * The first time this task was active. 1279 * @hide 1280 */ 1281 public long firstActiveTime; 1282 1283 /** 1284 * The last time this task was active. 1285 * @hide 1286 */ 1287 public long lastActiveTime; 1288 1289 /** 1290 * The recent activity values for the highest activity in the stack to have set the values. 1291 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1292 */ 1293 public TaskDescription taskDescription; 1294 1295 /** 1296 * Task affiliation for grouping with other tasks. 1297 */ 1298 public int affiliatedTaskId; 1299 1300 /** 1301 * Task affiliation color of the source task with the affiliated task id. 1302 * 1303 * @hide 1304 */ 1305 public int affiliatedTaskColor; 1306 1307 /** 1308 * The component launched as the first activity in the task. 1309 * This can be considered the "application" of this task. 1310 */ 1311 public ComponentName baseActivity; 1312 1313 /** 1314 * The activity component at the top of the history stack of the task. 1315 * This is what the user is currently doing. 1316 */ 1317 public ComponentName topActivity; 1318 1319 /** 1320 * Number of activities in this task. 1321 */ 1322 public int numActivities; 1323 1324 /** 1325 * The bounds of the task. 1326 * @hide 1327 */ 1328 public Rect bounds; 1329 1330 /** 1331 * True if the task can go in the docked stack. 1332 * @hide 1333 */ 1334 public boolean isDockable; 1335 1336 /** 1337 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1338 * @hide 1339 */ 1340 public int resizeMode; 1341 1342 public RecentTaskInfo() { 1343 } 1344 1345 @Override 1346 public int describeContents() { 1347 return 0; 1348 } 1349 1350 @Override 1351 public void writeToParcel(Parcel dest, int flags) { 1352 dest.writeInt(id); 1353 dest.writeInt(persistentId); 1354 if (baseIntent != null) { 1355 dest.writeInt(1); 1356 baseIntent.writeToParcel(dest, 0); 1357 } else { 1358 dest.writeInt(0); 1359 } 1360 ComponentName.writeToParcel(origActivity, dest); 1361 ComponentName.writeToParcel(realActivity, dest); 1362 TextUtils.writeToParcel(description, dest, 1363 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1364 if (taskDescription != null) { 1365 dest.writeInt(1); 1366 taskDescription.writeToParcel(dest, 0); 1367 } else { 1368 dest.writeInt(0); 1369 } 1370 dest.writeInt(stackId); 1371 dest.writeInt(userId); 1372 dest.writeLong(firstActiveTime); 1373 dest.writeLong(lastActiveTime); 1374 dest.writeInt(affiliatedTaskId); 1375 dest.writeInt(affiliatedTaskColor); 1376 ComponentName.writeToParcel(baseActivity, dest); 1377 ComponentName.writeToParcel(topActivity, dest); 1378 dest.writeInt(numActivities); 1379 if (bounds != null) { 1380 dest.writeInt(1); 1381 bounds.writeToParcel(dest, 0); 1382 } else { 1383 dest.writeInt(0); 1384 } 1385 dest.writeInt(isDockable ? 1 : 0); 1386 dest.writeInt(resizeMode); 1387 } 1388 1389 public void readFromParcel(Parcel source) { 1390 id = source.readInt(); 1391 persistentId = source.readInt(); 1392 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1393 origActivity = ComponentName.readFromParcel(source); 1394 realActivity = ComponentName.readFromParcel(source); 1395 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1396 taskDescription = source.readInt() > 0 ? 1397 TaskDescription.CREATOR.createFromParcel(source) : null; 1398 stackId = source.readInt(); 1399 userId = source.readInt(); 1400 firstActiveTime = source.readLong(); 1401 lastActiveTime = source.readLong(); 1402 affiliatedTaskId = source.readInt(); 1403 affiliatedTaskColor = source.readInt(); 1404 baseActivity = ComponentName.readFromParcel(source); 1405 topActivity = ComponentName.readFromParcel(source); 1406 numActivities = source.readInt(); 1407 bounds = source.readInt() > 0 ? 1408 Rect.CREATOR.createFromParcel(source) : null; 1409 isDockable = source.readInt() == 1; 1410 resizeMode = source.readInt(); 1411 } 1412 1413 public static final Creator<RecentTaskInfo> CREATOR 1414 = new Creator<RecentTaskInfo>() { 1415 public RecentTaskInfo createFromParcel(Parcel source) { 1416 return new RecentTaskInfo(source); 1417 } 1418 public RecentTaskInfo[] newArray(int size) { 1419 return new RecentTaskInfo[size]; 1420 } 1421 }; 1422 1423 private RecentTaskInfo(Parcel source) { 1424 readFromParcel(source); 1425 } 1426 } 1427 1428 /** 1429 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1430 * that have set their 1431 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1432 */ 1433 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1434 1435 /** 1436 * Provides a list that does not contain any 1437 * recent tasks that currently are not available to the user. 1438 */ 1439 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1440 1441 /** 1442 * Provides a list that contains recent tasks for all 1443 * profiles of a user. 1444 * @hide 1445 */ 1446 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1447 1448 /** 1449 * Ignores all tasks that are on the home stack. 1450 * @hide 1451 */ 1452 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1453 1454 /** 1455 * Ignores the top task in the docked stack. 1456 * @hide 1457 */ 1458 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1459 1460 /** 1461 * Ignores all tasks that are on the pinned stack. 1462 * @hide 1463 */ 1464 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1465 1466 /** 1467 * <p></p>Return a list of the tasks that the user has recently launched, with 1468 * the most recent being first and older ones after in order. 1469 * 1470 * <p><b>Note: this method is only intended for debugging and presenting 1471 * task management user interfaces</b>. This should never be used for 1472 * core logic in an application, such as deciding between different 1473 * behaviors based on the information found here. Such uses are 1474 * <em>not</em> supported, and will likely break in the future. For 1475 * example, if multiple applications can be actively running at the 1476 * same time, assumptions made about the meaning of the data here for 1477 * purposes of control flow will be incorrect.</p> 1478 * 1479 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1480 * no longer available to third party applications: the introduction of 1481 * document-centric recents means 1482 * it can leak personal information to the caller. For backwards compatibility, 1483 * it will still return a small subset of its data: at least the caller's 1484 * own tasks (though see {@link #getAppTasks()} for the correct supported 1485 * way to retrieve that information), and possibly some other tasks 1486 * such as home that are known to not be sensitive. 1487 * 1488 * @param maxNum The maximum number of entries to return in the list. The 1489 * actual number returned may be smaller, depending on how many tasks the 1490 * user has started and the maximum number the system can remember. 1491 * @param flags Information about what to return. May be any combination 1492 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1493 * 1494 * @return Returns a list of RecentTaskInfo records describing each of 1495 * the recent tasks. 1496 */ 1497 @Deprecated 1498 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1499 throws SecurityException { 1500 try { 1501 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1502 flags, UserHandle.myUserId()); 1503 } catch (RemoteException e) { 1504 throw e.rethrowFromSystemServer(); 1505 } 1506 } 1507 1508 /** 1509 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1510 * specific user. It requires holding 1511 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1512 * @param maxNum The maximum number of entries to return in the list. The 1513 * actual number returned may be smaller, depending on how many tasks the 1514 * user has started and the maximum number the system can remember. 1515 * @param flags Information about what to return. May be any combination 1516 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1517 * 1518 * @return Returns a list of RecentTaskInfo records describing each of 1519 * the recent tasks. Most recently activated tasks go first. 1520 * 1521 * @hide 1522 */ 1523 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1524 throws SecurityException { 1525 try { 1526 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1527 flags, userId); 1528 } catch (RemoteException e) { 1529 throw e.rethrowFromSystemServer(); 1530 } 1531 } 1532 1533 /** 1534 * Information you can retrieve about a particular task that is currently 1535 * "running" in the system. Note that a running task does not mean the 1536 * given task actually has a process it is actively running in; it simply 1537 * means that the user has gone to it and never closed it, but currently 1538 * the system may have killed its process and is only holding on to its 1539 * last state in order to restart it when the user returns. 1540 */ 1541 public static class RunningTaskInfo implements Parcelable { 1542 /** 1543 * A unique identifier for this task. 1544 */ 1545 public int id; 1546 1547 /** 1548 * The stack that currently contains this task. 1549 * @hide 1550 */ 1551 public int stackId; 1552 1553 /** 1554 * The component launched as the first activity in the task. This can 1555 * be considered the "application" of this task. 1556 */ 1557 public ComponentName baseActivity; 1558 1559 /** 1560 * The activity component at the top of the history stack of the task. 1561 * This is what the user is currently doing. 1562 */ 1563 public ComponentName topActivity; 1564 1565 /** 1566 * Thumbnail representation of the task's current state. Currently 1567 * always null. 1568 */ 1569 public Bitmap thumbnail; 1570 1571 /** 1572 * Description of the task's current state. 1573 */ 1574 public CharSequence description; 1575 1576 /** 1577 * Number of activities in this task. 1578 */ 1579 public int numActivities; 1580 1581 /** 1582 * Number of activities that are currently running (not stopped 1583 * and persisted) in this task. 1584 */ 1585 public int numRunning; 1586 1587 /** 1588 * Last time task was run. For sorting. 1589 * @hide 1590 */ 1591 public long lastActiveTime; 1592 1593 /** 1594 * True if the task can go in the docked stack. 1595 * @hide 1596 */ 1597 public boolean isDockable; 1598 1599 /** 1600 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1601 * @hide 1602 */ 1603 public int resizeMode; 1604 1605 public RunningTaskInfo() { 1606 } 1607 1608 public int describeContents() { 1609 return 0; 1610 } 1611 1612 public void writeToParcel(Parcel dest, int flags) { 1613 dest.writeInt(id); 1614 dest.writeInt(stackId); 1615 ComponentName.writeToParcel(baseActivity, dest); 1616 ComponentName.writeToParcel(topActivity, dest); 1617 if (thumbnail != null) { 1618 dest.writeInt(1); 1619 thumbnail.writeToParcel(dest, 0); 1620 } else { 1621 dest.writeInt(0); 1622 } 1623 TextUtils.writeToParcel(description, dest, 1624 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1625 dest.writeInt(numActivities); 1626 dest.writeInt(numRunning); 1627 dest.writeInt(isDockable ? 1 : 0); 1628 dest.writeInt(resizeMode); 1629 } 1630 1631 public void readFromParcel(Parcel source) { 1632 id = source.readInt(); 1633 stackId = source.readInt(); 1634 baseActivity = ComponentName.readFromParcel(source); 1635 topActivity = ComponentName.readFromParcel(source); 1636 if (source.readInt() != 0) { 1637 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1638 } else { 1639 thumbnail = null; 1640 } 1641 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1642 numActivities = source.readInt(); 1643 numRunning = source.readInt(); 1644 isDockable = source.readInt() != 0; 1645 resizeMode = source.readInt(); 1646 } 1647 1648 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1649 public RunningTaskInfo createFromParcel(Parcel source) { 1650 return new RunningTaskInfo(source); 1651 } 1652 public RunningTaskInfo[] newArray(int size) { 1653 return new RunningTaskInfo[size]; 1654 } 1655 }; 1656 1657 private RunningTaskInfo(Parcel source) { 1658 readFromParcel(source); 1659 } 1660 } 1661 1662 /** 1663 * Get the list of tasks associated with the calling application. 1664 * 1665 * @return The list of tasks associated with the application making this call. 1666 * @throws SecurityException 1667 */ 1668 public List<ActivityManager.AppTask> getAppTasks() { 1669 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1670 List<IAppTask> appTasks; 1671 try { 1672 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1673 } catch (RemoteException e) { 1674 throw e.rethrowFromSystemServer(); 1675 } 1676 int numAppTasks = appTasks.size(); 1677 for (int i = 0; i < numAppTasks; i++) { 1678 tasks.add(new AppTask(appTasks.get(i))); 1679 } 1680 return tasks; 1681 } 1682 1683 /** 1684 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1685 * with {@link #addAppTask}. 1686 */ 1687 public Size getAppTaskThumbnailSize() { 1688 synchronized (this) { 1689 ensureAppTaskThumbnailSizeLocked(); 1690 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1691 } 1692 } 1693 1694 private void ensureAppTaskThumbnailSizeLocked() { 1695 if (mAppTaskThumbnailSize == null) { 1696 try { 1697 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1698 } catch (RemoteException e) { 1699 throw e.rethrowFromSystemServer(); 1700 } 1701 } 1702 } 1703 1704 /** 1705 * Add a new {@link AppTask} for the calling application. This will create a new 1706 * recents entry that is added to the <b>end</b> of all existing recents. 1707 * 1708 * @param activity The activity that is adding the entry. This is used to help determine 1709 * the context that the new recents entry will be in. 1710 * @param intent The Intent that describes the recents entry. This is the same Intent that 1711 * you would have used to launch the activity for it. In generally you will want to set 1712 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1713 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1714 * entry will exist without an activity, so it doesn't make sense to not retain it when 1715 * its activity disappears. The given Intent here also must have an explicit ComponentName 1716 * set on it. 1717 * @param description Optional additional description information. 1718 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1719 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1720 * recreated in your process, probably in a way you don't like, before the recents entry 1721 * is added. 1722 * 1723 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1724 * most likely cause of failure is that there is no more room for more tasks for your app. 1725 */ 1726 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1727 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1728 Point size; 1729 synchronized (this) { 1730 ensureAppTaskThumbnailSizeLocked(); 1731 size = mAppTaskThumbnailSize; 1732 } 1733 final int tw = thumbnail.getWidth(); 1734 final int th = thumbnail.getHeight(); 1735 if (tw != size.x || th != size.y) { 1736 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1737 1738 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1739 float scale; 1740 float dx = 0, dy = 0; 1741 if (tw * size.x > size.y * th) { 1742 scale = (float) size.x / (float) th; 1743 dx = (size.y - tw * scale) * 0.5f; 1744 } else { 1745 scale = (float) size.y / (float) tw; 1746 dy = (size.x - th * scale) * 0.5f; 1747 } 1748 Matrix matrix = new Matrix(); 1749 matrix.setScale(scale, scale); 1750 matrix.postTranslate((int) (dx + 0.5f), 0); 1751 1752 Canvas canvas = new Canvas(bm); 1753 canvas.drawBitmap(thumbnail, matrix, null); 1754 canvas.setBitmap(null); 1755 1756 thumbnail = bm; 1757 } 1758 if (description == null) { 1759 description = new TaskDescription(); 1760 } 1761 try { 1762 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1763 intent, description, thumbnail); 1764 } catch (RemoteException e) { 1765 throw e.rethrowFromSystemServer(); 1766 } 1767 } 1768 1769 /** 1770 * Return a list of the tasks that are currently running, with 1771 * the most recent being first and older ones after in order. Note that 1772 * "running" does not mean any of the task's code is currently loaded or 1773 * activity -- the task may have been frozen by the system, so that it 1774 * can be restarted in its previous state when next brought to the 1775 * foreground. 1776 * 1777 * <p><b>Note: this method is only intended for debugging and presenting 1778 * task management user interfaces</b>. This should never be used for 1779 * core logic in an application, such as deciding between different 1780 * behaviors based on the information found here. Such uses are 1781 * <em>not</em> supported, and will likely break in the future. For 1782 * example, if multiple applications can be actively running at the 1783 * same time, assumptions made about the meaning of the data here for 1784 * purposes of control flow will be incorrect.</p> 1785 * 1786 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1787 * is no longer available to third party 1788 * applications: the introduction of document-centric recents means 1789 * it can leak person information to the caller. For backwards compatibility, 1790 * it will still retu rn a small subset of its data: at least the caller's 1791 * own tasks, and possibly some other tasks 1792 * such as home that are known to not be sensitive. 1793 * 1794 * @param maxNum The maximum number of entries to return in the list. The 1795 * actual number returned may be smaller, depending on how many tasks the 1796 * user has started. 1797 * 1798 * @return Returns a list of RunningTaskInfo records describing each of 1799 * the running tasks. 1800 */ 1801 @Deprecated 1802 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1803 throws SecurityException { 1804 try { 1805 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1806 } catch (RemoteException e) { 1807 throw e.rethrowFromSystemServer(); 1808 } 1809 } 1810 1811 /** 1812 * Completely remove the given task. 1813 * 1814 * @param taskId Identifier of the task to be removed. 1815 * @return Returns true if the given task was found and removed. 1816 * 1817 * @hide 1818 */ 1819 public boolean removeTask(int taskId) throws SecurityException { 1820 try { 1821 return ActivityManagerNative.getDefault().removeTask(taskId); 1822 } catch (RemoteException e) { 1823 throw e.rethrowFromSystemServer(); 1824 } 1825 } 1826 1827 /** 1828 * Metadata related to the {@link TaskThumbnail}. 1829 * 1830 * @hide 1831 */ 1832 public static class TaskThumbnailInfo implements Parcelable { 1833 /** @hide */ 1834 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1835 private static final String ATTR_TASK_WIDTH = 1836 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1837 private static final String ATTR_TASK_HEIGHT = 1838 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1839 private static final String ATTR_SCREEN_ORIENTATION = 1840 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1841 1842 public int taskWidth; 1843 public int taskHeight; 1844 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1845 1846 public TaskThumbnailInfo() { 1847 // Do nothing 1848 } 1849 1850 private TaskThumbnailInfo(Parcel source) { 1851 readFromParcel(source); 1852 } 1853 1854 /** 1855 * Resets this info state to the initial state. 1856 * @hide 1857 */ 1858 public void reset() { 1859 taskWidth = 0; 1860 taskHeight = 0; 1861 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1862 } 1863 1864 /** 1865 * Copies from another ThumbnailInfo. 1866 */ 1867 public void copyFrom(TaskThumbnailInfo o) { 1868 taskWidth = o.taskWidth; 1869 taskHeight = o.taskHeight; 1870 screenOrientation = o.screenOrientation; 1871 } 1872 1873 /** @hide */ 1874 public void saveToXml(XmlSerializer out) throws IOException { 1875 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1876 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1877 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1878 } 1879 1880 /** @hide */ 1881 public void restoreFromXml(String attrName, String attrValue) { 1882 if (ATTR_TASK_WIDTH.equals(attrName)) { 1883 taskWidth = Integer.parseInt(attrValue); 1884 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1885 taskHeight = Integer.parseInt(attrValue); 1886 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1887 screenOrientation = Integer.parseInt(attrValue); 1888 } 1889 } 1890 1891 public int describeContents() { 1892 return 0; 1893 } 1894 1895 public void writeToParcel(Parcel dest, int flags) { 1896 dest.writeInt(taskWidth); 1897 dest.writeInt(taskHeight); 1898 dest.writeInt(screenOrientation); 1899 } 1900 1901 public void readFromParcel(Parcel source) { 1902 taskWidth = source.readInt(); 1903 taskHeight = source.readInt(); 1904 screenOrientation = source.readInt(); 1905 } 1906 1907 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1908 public TaskThumbnailInfo createFromParcel(Parcel source) { 1909 return new TaskThumbnailInfo(source); 1910 } 1911 public TaskThumbnailInfo[] newArray(int size) { 1912 return new TaskThumbnailInfo[size]; 1913 } 1914 }; 1915 } 1916 1917 /** @hide */ 1918 public static class TaskThumbnail implements Parcelable { 1919 public Bitmap mainThumbnail; 1920 public ParcelFileDescriptor thumbnailFileDescriptor; 1921 public TaskThumbnailInfo thumbnailInfo; 1922 1923 public TaskThumbnail() { 1924 } 1925 1926 private TaskThumbnail(Parcel source) { 1927 readFromParcel(source); 1928 } 1929 1930 public int describeContents() { 1931 if (thumbnailFileDescriptor != null) { 1932 return thumbnailFileDescriptor.describeContents(); 1933 } 1934 return 0; 1935 } 1936 1937 public void writeToParcel(Parcel dest, int flags) { 1938 if (mainThumbnail != null) { 1939 dest.writeInt(1); 1940 mainThumbnail.writeToParcel(dest, flags); 1941 } else { 1942 dest.writeInt(0); 1943 } 1944 if (thumbnailFileDescriptor != null) { 1945 dest.writeInt(1); 1946 thumbnailFileDescriptor.writeToParcel(dest, flags); 1947 } else { 1948 dest.writeInt(0); 1949 } 1950 if (thumbnailInfo != null) { 1951 dest.writeInt(1); 1952 thumbnailInfo.writeToParcel(dest, flags); 1953 } else { 1954 dest.writeInt(0); 1955 } 1956 } 1957 1958 public void readFromParcel(Parcel source) { 1959 if (source.readInt() != 0) { 1960 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1961 } else { 1962 mainThumbnail = null; 1963 } 1964 if (source.readInt() != 0) { 1965 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1966 } else { 1967 thumbnailFileDescriptor = null; 1968 } 1969 if (source.readInt() != 0) { 1970 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1971 } else { 1972 thumbnailInfo = null; 1973 } 1974 } 1975 1976 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1977 public TaskThumbnail createFromParcel(Parcel source) { 1978 return new TaskThumbnail(source); 1979 } 1980 public TaskThumbnail[] newArray(int size) { 1981 return new TaskThumbnail[size]; 1982 } 1983 }; 1984 } 1985 1986 /** @hide */ 1987 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1988 try { 1989 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1990 } catch (RemoteException e) { 1991 throw e.rethrowFromSystemServer(); 1992 } 1993 } 1994 1995 /** @hide */ 1996 public boolean isInHomeStack(int taskId) { 1997 try { 1998 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1999 } catch (RemoteException e) { 2000 throw e.rethrowFromSystemServer(); 2001 } 2002 } 2003 2004 /** 2005 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2006 * activity along with the task, so it is positioned immediately behind 2007 * the task. 2008 */ 2009 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2010 2011 /** 2012 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2013 * user-instigated action, so the current activity will not receive a 2014 * hint that the user is leaving. 2015 */ 2016 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2017 2018 /** 2019 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2020 * with a null options argument. 2021 * 2022 * @param taskId The identifier of the task to be moved, as found in 2023 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2024 * @param flags Additional operational flags, 0 or more of 2025 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2026 */ 2027 public void moveTaskToFront(int taskId, int flags) { 2028 moveTaskToFront(taskId, flags, null); 2029 } 2030 2031 /** 2032 * Ask that the task associated with a given task ID be moved to the 2033 * front of the stack, so it is now visible to the user. Requires that 2034 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2035 * or a SecurityException will be thrown. 2036 * 2037 * @param taskId The identifier of the task to be moved, as found in 2038 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2039 * @param flags Additional operational flags, 0 or more of 2040 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2041 * @param options Additional options for the operation, either null or 2042 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2043 * Context.startActivity(Intent, Bundle)}. 2044 */ 2045 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2046 try { 2047 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 2048 } catch (RemoteException e) { 2049 throw e.rethrowFromSystemServer(); 2050 } 2051 } 2052 2053 /** 2054 * Information you can retrieve about a particular Service that is 2055 * currently running in the system. 2056 */ 2057 public static class RunningServiceInfo implements Parcelable { 2058 /** 2059 * The service component. 2060 */ 2061 public ComponentName service; 2062 2063 /** 2064 * If non-zero, this is the process the service is running in. 2065 */ 2066 public int pid; 2067 2068 /** 2069 * The UID that owns this service. 2070 */ 2071 public int uid; 2072 2073 /** 2074 * The name of the process this service runs in. 2075 */ 2076 public String process; 2077 2078 /** 2079 * Set to true if the service has asked to run as a foreground process. 2080 */ 2081 public boolean foreground; 2082 2083 /** 2084 * The time when the service was first made active, either by someone 2085 * starting or binding to it. This 2086 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2087 */ 2088 public long activeSince; 2089 2090 /** 2091 * Set to true if this service has been explicitly started. 2092 */ 2093 public boolean started; 2094 2095 /** 2096 * Number of clients connected to the service. 2097 */ 2098 public int clientCount; 2099 2100 /** 2101 * Number of times the service's process has crashed while the service 2102 * is running. 2103 */ 2104 public int crashCount; 2105 2106 /** 2107 * The time when there was last activity in the service (either 2108 * explicit requests to start it or clients binding to it). This 2109 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2110 */ 2111 public long lastActivityTime; 2112 2113 /** 2114 * If non-zero, this service is not currently running, but scheduled to 2115 * restart at the given time. 2116 */ 2117 public long restarting; 2118 2119 /** 2120 * Bit for {@link #flags}: set if this service has been 2121 * explicitly started. 2122 */ 2123 public static final int FLAG_STARTED = 1<<0; 2124 2125 /** 2126 * Bit for {@link #flags}: set if the service has asked to 2127 * run as a foreground process. 2128 */ 2129 public static final int FLAG_FOREGROUND = 1<<1; 2130 2131 /** 2132 * Bit for {@link #flags): set if the service is running in a 2133 * core system process. 2134 */ 2135 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2136 2137 /** 2138 * Bit for {@link #flags): set if the service is running in a 2139 * persistent process. 2140 */ 2141 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2142 2143 /** 2144 * Running flags. 2145 */ 2146 public int flags; 2147 2148 /** 2149 * For special services that are bound to by system code, this is 2150 * the package that holds the binding. 2151 */ 2152 public String clientPackage; 2153 2154 /** 2155 * For special services that are bound to by system code, this is 2156 * a string resource providing a user-visible label for who the 2157 * client is. 2158 */ 2159 public int clientLabel; 2160 2161 public RunningServiceInfo() { 2162 } 2163 2164 public int describeContents() { 2165 return 0; 2166 } 2167 2168 public void writeToParcel(Parcel dest, int flags) { 2169 ComponentName.writeToParcel(service, dest); 2170 dest.writeInt(pid); 2171 dest.writeInt(uid); 2172 dest.writeString(process); 2173 dest.writeInt(foreground ? 1 : 0); 2174 dest.writeLong(activeSince); 2175 dest.writeInt(started ? 1 : 0); 2176 dest.writeInt(clientCount); 2177 dest.writeInt(crashCount); 2178 dest.writeLong(lastActivityTime); 2179 dest.writeLong(restarting); 2180 dest.writeInt(this.flags); 2181 dest.writeString(clientPackage); 2182 dest.writeInt(clientLabel); 2183 } 2184 2185 public void readFromParcel(Parcel source) { 2186 service = ComponentName.readFromParcel(source); 2187 pid = source.readInt(); 2188 uid = source.readInt(); 2189 process = source.readString(); 2190 foreground = source.readInt() != 0; 2191 activeSince = source.readLong(); 2192 started = source.readInt() != 0; 2193 clientCount = source.readInt(); 2194 crashCount = source.readInt(); 2195 lastActivityTime = source.readLong(); 2196 restarting = source.readLong(); 2197 flags = source.readInt(); 2198 clientPackage = source.readString(); 2199 clientLabel = source.readInt(); 2200 } 2201 2202 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2203 public RunningServiceInfo createFromParcel(Parcel source) { 2204 return new RunningServiceInfo(source); 2205 } 2206 public RunningServiceInfo[] newArray(int size) { 2207 return new RunningServiceInfo[size]; 2208 } 2209 }; 2210 2211 private RunningServiceInfo(Parcel source) { 2212 readFromParcel(source); 2213 } 2214 } 2215 2216 /** 2217 * Return a list of the services that are currently running. 2218 * 2219 * <p><b>Note: this method is only intended for debugging or implementing 2220 * service management type user interfaces.</b></p> 2221 * 2222 * @param maxNum The maximum number of entries to return in the list. The 2223 * actual number returned may be smaller, depending on how many services 2224 * are running. 2225 * 2226 * @return Returns a list of RunningServiceInfo records describing each of 2227 * the running tasks. 2228 */ 2229 public List<RunningServiceInfo> getRunningServices(int maxNum) 2230 throws SecurityException { 2231 try { 2232 return ActivityManagerNative.getDefault() 2233 .getServices(maxNum, 0); 2234 } catch (RemoteException e) { 2235 throw e.rethrowFromSystemServer(); 2236 } 2237 } 2238 2239 /** 2240 * Returns a PendingIntent you can start to show a control panel for the 2241 * given running service. If the service does not have a control panel, 2242 * null is returned. 2243 */ 2244 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2245 throws SecurityException { 2246 try { 2247 return ActivityManagerNative.getDefault() 2248 .getRunningServiceControlPanel(service); 2249 } catch (RemoteException e) { 2250 throw e.rethrowFromSystemServer(); 2251 } 2252 } 2253 2254 /** 2255 * Information you can retrieve about the available memory through 2256 * {@link ActivityManager#getMemoryInfo}. 2257 */ 2258 public static class MemoryInfo implements Parcelable { 2259 /** 2260 * The available memory on the system. This number should not 2261 * be considered absolute: due to the nature of the kernel, a significant 2262 * portion of this memory is actually in use and needed for the overall 2263 * system to run well. 2264 */ 2265 public long availMem; 2266 2267 /** 2268 * The total memory accessible by the kernel. This is basically the 2269 * RAM size of the device, not including below-kernel fixed allocations 2270 * like DMA buffers, RAM for the baseband CPU, etc. 2271 */ 2272 public long totalMem; 2273 2274 /** 2275 * The threshold of {@link #availMem} at which we consider memory to be 2276 * low and start killing background services and other non-extraneous 2277 * processes. 2278 */ 2279 public long threshold; 2280 2281 /** 2282 * Set to true if the system considers itself to currently be in a low 2283 * memory situation. 2284 */ 2285 public boolean lowMemory; 2286 2287 /** @hide */ 2288 public long hiddenAppThreshold; 2289 /** @hide */ 2290 public long secondaryServerThreshold; 2291 /** @hide */ 2292 public long visibleAppThreshold; 2293 /** @hide */ 2294 public long foregroundAppThreshold; 2295 2296 public MemoryInfo() { 2297 } 2298 2299 public int describeContents() { 2300 return 0; 2301 } 2302 2303 public void writeToParcel(Parcel dest, int flags) { 2304 dest.writeLong(availMem); 2305 dest.writeLong(totalMem); 2306 dest.writeLong(threshold); 2307 dest.writeInt(lowMemory ? 1 : 0); 2308 dest.writeLong(hiddenAppThreshold); 2309 dest.writeLong(secondaryServerThreshold); 2310 dest.writeLong(visibleAppThreshold); 2311 dest.writeLong(foregroundAppThreshold); 2312 } 2313 2314 public void readFromParcel(Parcel source) { 2315 availMem = source.readLong(); 2316 totalMem = source.readLong(); 2317 threshold = source.readLong(); 2318 lowMemory = source.readInt() != 0; 2319 hiddenAppThreshold = source.readLong(); 2320 secondaryServerThreshold = source.readLong(); 2321 visibleAppThreshold = source.readLong(); 2322 foregroundAppThreshold = source.readLong(); 2323 } 2324 2325 public static final Creator<MemoryInfo> CREATOR 2326 = new Creator<MemoryInfo>() { 2327 public MemoryInfo createFromParcel(Parcel source) { 2328 return new MemoryInfo(source); 2329 } 2330 public MemoryInfo[] newArray(int size) { 2331 return new MemoryInfo[size]; 2332 } 2333 }; 2334 2335 private MemoryInfo(Parcel source) { 2336 readFromParcel(source); 2337 } 2338 } 2339 2340 /** 2341 * Return general information about the memory state of the system. This 2342 * can be used to help decide how to manage your own memory, though note 2343 * that polling is not recommended and 2344 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2345 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2346 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2347 * level of your process as needed, which gives a better hint for how to 2348 * manage its memory. 2349 */ 2350 public void getMemoryInfo(MemoryInfo outInfo) { 2351 try { 2352 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2353 } catch (RemoteException e) { 2354 throw e.rethrowFromSystemServer(); 2355 } 2356 } 2357 2358 /** 2359 * Information you can retrieve about an ActivityStack in the system. 2360 * @hide 2361 */ 2362 public static class StackInfo implements Parcelable { 2363 public int stackId; 2364 public Rect bounds = new Rect(); 2365 public int[] taskIds; 2366 public String[] taskNames; 2367 public Rect[] taskBounds; 2368 public int[] taskUserIds; 2369 public ComponentName topActivity; 2370 public int displayId; 2371 public int userId; 2372 public boolean visible; 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 dest.writeInt(visible ? 1 : 0); 2400 if (topActivity != null) { 2401 dest.writeInt(1); 2402 topActivity.writeToParcel(dest, 0); 2403 } else { 2404 dest.writeInt(0); 2405 } 2406 } 2407 2408 public void readFromParcel(Parcel source) { 2409 stackId = source.readInt(); 2410 bounds = new Rect( 2411 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2412 taskIds = source.createIntArray(); 2413 taskNames = source.createStringArray(); 2414 final int boundsCount = source.readInt(); 2415 if (boundsCount > 0) { 2416 taskBounds = new Rect[boundsCount]; 2417 for (int i = 0; i < boundsCount; i++) { 2418 taskBounds[i] = new Rect(); 2419 taskBounds[i].set( 2420 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2421 } 2422 } else { 2423 taskBounds = null; 2424 } 2425 taskUserIds = source.createIntArray(); 2426 displayId = source.readInt(); 2427 userId = source.readInt(); 2428 visible = source.readInt() > 0; 2429 if (source.readInt() > 0) { 2430 topActivity = ComponentName.readFromParcel(source); 2431 } 2432 } 2433 2434 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2435 @Override 2436 public StackInfo createFromParcel(Parcel source) { 2437 return new StackInfo(source); 2438 } 2439 @Override 2440 public StackInfo[] newArray(int size) { 2441 return new StackInfo[size]; 2442 } 2443 }; 2444 2445 public StackInfo() { 2446 } 2447 2448 private StackInfo(Parcel source) { 2449 readFromParcel(source); 2450 } 2451 2452 public String toString(String prefix) { 2453 StringBuilder sb = new StringBuilder(256); 2454 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2455 sb.append(" bounds="); sb.append(bounds.toShortString()); 2456 sb.append(" displayId="); sb.append(displayId); 2457 sb.append(" userId="); sb.append(userId); 2458 sb.append("\n"); 2459 prefix = prefix + " "; 2460 for (int i = 0; i < taskIds.length; ++i) { 2461 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2462 sb.append(": "); sb.append(taskNames[i]); 2463 if (taskBounds != null) { 2464 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2465 } 2466 sb.append(" userId=").append(taskUserIds[i]); 2467 sb.append(" visible=").append(visible); 2468 if (topActivity != null) { 2469 sb.append(" topActivity=").append(topActivity); 2470 } 2471 sb.append("\n"); 2472 } 2473 return sb.toString(); 2474 } 2475 2476 @Override 2477 public String toString() { 2478 return toString(""); 2479 } 2480 } 2481 2482 /** 2483 * @hide 2484 */ 2485 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2486 try { 2487 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2488 observer, UserHandle.myUserId()); 2489 } catch (RemoteException e) { 2490 throw e.rethrowFromSystemServer(); 2491 } 2492 } 2493 2494 /** 2495 * Permits an application to erase its own data from disk. This is equivalent to 2496 * the user choosing to clear the app's data from within the device settings UI. It 2497 * erases all dynamic data associated with the app -- its private data and data in its 2498 * private area on external storage -- but does not remove the installed application 2499 * itself, nor any OBB files. 2500 * 2501 * @return {@code true} if the application successfully requested that the application's 2502 * data be erased; {@code false} otherwise. 2503 */ 2504 public boolean clearApplicationUserData() { 2505 return clearApplicationUserData(mContext.getPackageName(), null); 2506 } 2507 2508 2509 /** 2510 * Permits an application to get the persistent URI permissions granted to another. 2511 * 2512 * <p>Typically called by Settings. 2513 * 2514 * @param packageName application to look for the granted permissions 2515 * @return list of granted URI permissions 2516 * 2517 * @hide 2518 */ 2519 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2520 try { 2521 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2522 UserHandle.myUserId()); 2523 } catch (RemoteException e) { 2524 throw e.rethrowFromSystemServer(); 2525 } 2526 } 2527 2528 /** 2529 * Permits an application to clear the persistent URI permissions granted to another. 2530 * 2531 * <p>Typically called by Settings. 2532 * 2533 * @param packageName application to clear its granted permissions 2534 * 2535 * @hide 2536 */ 2537 public void clearGrantedUriPermissions(String packageName) { 2538 try { 2539 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2540 UserHandle.myUserId()); 2541 } catch (RemoteException e) { 2542 throw e.rethrowFromSystemServer(); 2543 } 2544 } 2545 2546 /** 2547 * Information you can retrieve about any processes that are in an error condition. 2548 */ 2549 public static class ProcessErrorStateInfo implements Parcelable { 2550 /** 2551 * Condition codes 2552 */ 2553 public static final int NO_ERROR = 0; 2554 public static final int CRASHED = 1; 2555 public static final int NOT_RESPONDING = 2; 2556 2557 /** 2558 * The condition that the process is in. 2559 */ 2560 public int condition; 2561 2562 /** 2563 * The process name in which the crash or error occurred. 2564 */ 2565 public String processName; 2566 2567 /** 2568 * The pid of this process; 0 if none 2569 */ 2570 public int pid; 2571 2572 /** 2573 * The kernel user-ID that has been assigned to this process; 2574 * currently this is not a unique ID (multiple applications can have 2575 * the same uid). 2576 */ 2577 public int uid; 2578 2579 /** 2580 * The activity name associated with the error, if known. May be null. 2581 */ 2582 public String tag; 2583 2584 /** 2585 * A short message describing the error condition. 2586 */ 2587 public String shortMsg; 2588 2589 /** 2590 * A long message describing the error condition. 2591 */ 2592 public String longMsg; 2593 2594 /** 2595 * The stack trace where the error originated. May be null. 2596 */ 2597 public String stackTrace; 2598 2599 /** 2600 * to be deprecated: This value will always be null. 2601 */ 2602 public byte[] crashData = null; 2603 2604 public ProcessErrorStateInfo() { 2605 } 2606 2607 @Override 2608 public int describeContents() { 2609 return 0; 2610 } 2611 2612 @Override 2613 public void writeToParcel(Parcel dest, int flags) { 2614 dest.writeInt(condition); 2615 dest.writeString(processName); 2616 dest.writeInt(pid); 2617 dest.writeInt(uid); 2618 dest.writeString(tag); 2619 dest.writeString(shortMsg); 2620 dest.writeString(longMsg); 2621 dest.writeString(stackTrace); 2622 } 2623 2624 public void readFromParcel(Parcel source) { 2625 condition = source.readInt(); 2626 processName = source.readString(); 2627 pid = source.readInt(); 2628 uid = source.readInt(); 2629 tag = source.readString(); 2630 shortMsg = source.readString(); 2631 longMsg = source.readString(); 2632 stackTrace = source.readString(); 2633 } 2634 2635 public static final Creator<ProcessErrorStateInfo> CREATOR = 2636 new Creator<ProcessErrorStateInfo>() { 2637 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2638 return new ProcessErrorStateInfo(source); 2639 } 2640 public ProcessErrorStateInfo[] newArray(int size) { 2641 return new ProcessErrorStateInfo[size]; 2642 } 2643 }; 2644 2645 private ProcessErrorStateInfo(Parcel source) { 2646 readFromParcel(source); 2647 } 2648 } 2649 2650 /** 2651 * Returns a list of any processes that are currently in an error condition. The result 2652 * will be null if all processes are running properly at this time. 2653 * 2654 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2655 * current error conditions (it will not return an empty list). This list ordering is not 2656 * specified. 2657 */ 2658 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2659 try { 2660 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2661 } catch (RemoteException e) { 2662 throw e.rethrowFromSystemServer(); 2663 } 2664 } 2665 2666 /** 2667 * Information you can retrieve about a running process. 2668 */ 2669 public static class RunningAppProcessInfo implements Parcelable { 2670 /** 2671 * The name of the process that this object is associated with 2672 */ 2673 public String processName; 2674 2675 /** 2676 * The pid of this process; 0 if none 2677 */ 2678 public int pid; 2679 2680 /** 2681 * The user id of this process. 2682 */ 2683 public int uid; 2684 2685 /** 2686 * All packages that have been loaded into the process. 2687 */ 2688 public String pkgList[]; 2689 2690 /** 2691 * Constant for {@link #flags}: this is an app that is unable to 2692 * correctly save its state when going to the background, 2693 * so it can not be killed while in the background. 2694 * @hide 2695 */ 2696 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2697 2698 /** 2699 * Constant for {@link #flags}: this process is associated with a 2700 * persistent system app. 2701 * @hide 2702 */ 2703 public static final int FLAG_PERSISTENT = 1<<1; 2704 2705 /** 2706 * Constant for {@link #flags}: this process is associated with a 2707 * persistent system app. 2708 * @hide 2709 */ 2710 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2711 2712 /** 2713 * Flags of information. May be any of 2714 * {@link #FLAG_CANT_SAVE_STATE}. 2715 * @hide 2716 */ 2717 public int flags; 2718 2719 /** 2720 * Last memory trim level reported to the process: corresponds to 2721 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2722 * ComponentCallbacks2.onTrimMemory(int)}. 2723 */ 2724 public int lastTrimLevel; 2725 2726 /** 2727 * Constant for {@link #importance}: This process is running the 2728 * foreground UI; that is, it is the thing currently at the top of the screen 2729 * that the user is interacting with. 2730 */ 2731 public static final int IMPORTANCE_FOREGROUND = 100; 2732 2733 /** 2734 * Constant for {@link #importance}: This process is running a foreground 2735 * service, for example to perform music playback even while the user is 2736 * not immediately in the app. This generally indicates that the process 2737 * is doing something the user actively cares about. 2738 */ 2739 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2740 2741 /** 2742 * Constant for {@link #importance}: This process is running the foreground 2743 * UI, but the device is asleep so it is not visible to the user. This means 2744 * the user is not really aware of the process, because they can not see or 2745 * interact with it, but it is quite important because it what they expect to 2746 * return to once unlocking the device. 2747 */ 2748 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2749 2750 /** 2751 * Constant for {@link #importance}: This process is running something 2752 * that is actively visible to the user, though not in the immediate 2753 * foreground. This may be running a window that is behind the current 2754 * foreground (so paused and with its state saved, not interacting with 2755 * the user, but visible to them to some degree); it may also be running 2756 * other services under the system's control that it inconsiders important. 2757 */ 2758 public static final int IMPORTANCE_VISIBLE = 200; 2759 2760 /** 2761 * Constant for {@link #importance}: This process is not something the user 2762 * is directly aware of, but is otherwise perceptable to them to some degree. 2763 */ 2764 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2765 2766 /** 2767 * Constant for {@link #importance}: This process is running an 2768 * application that can not save its state, and thus can't be killed 2769 * while in the background. 2770 * @hide 2771 */ 2772 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2773 2774 /** 2775 * Constant for {@link #importance}: This process is contains services 2776 * that should remain running. These are background services apps have 2777 * started, not something the user is aware of, so they may be killed by 2778 * the system relatively freely (though it is generally desired that they 2779 * stay running as long as they want to). 2780 */ 2781 public static final int IMPORTANCE_SERVICE = 300; 2782 2783 /** 2784 * Constant for {@link #importance}: This process process contains 2785 * background code that is expendable. 2786 */ 2787 public static final int IMPORTANCE_BACKGROUND = 400; 2788 2789 /** 2790 * Constant for {@link #importance}: This process is empty of any 2791 * actively running code. 2792 */ 2793 public static final int IMPORTANCE_EMPTY = 500; 2794 2795 /** 2796 * Constant for {@link #importance}: This process does not exist. 2797 */ 2798 public static final int IMPORTANCE_GONE = 1000; 2799 2800 /** @hide */ 2801 public static int procStateToImportance(int procState) { 2802 if (procState == PROCESS_STATE_NONEXISTENT) { 2803 return IMPORTANCE_GONE; 2804 } else if (procState >= PROCESS_STATE_HOME) { 2805 return IMPORTANCE_BACKGROUND; 2806 } else if (procState >= PROCESS_STATE_SERVICE) { 2807 return IMPORTANCE_SERVICE; 2808 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2809 return IMPORTANCE_CANT_SAVE_STATE; 2810 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2811 return IMPORTANCE_PERCEPTIBLE; 2812 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2813 return IMPORTANCE_VISIBLE; 2814 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2815 return IMPORTANCE_TOP_SLEEPING; 2816 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2817 return IMPORTANCE_FOREGROUND_SERVICE; 2818 } else { 2819 return IMPORTANCE_FOREGROUND; 2820 } 2821 } 2822 2823 /** 2824 * The relative importance level that the system places on this 2825 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2826 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2827 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2828 * constants are numbered so that "more important" values are always 2829 * smaller than "less important" values. 2830 */ 2831 public int importance; 2832 2833 /** 2834 * An additional ordering within a particular {@link #importance} 2835 * category, providing finer-grained information about the relative 2836 * utility of processes within a category. This number means nothing 2837 * except that a smaller values are more recently used (and thus 2838 * more important). Currently an LRU value is only maintained for 2839 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2840 * be maintained in the future. 2841 */ 2842 public int lru; 2843 2844 /** 2845 * Constant for {@link #importanceReasonCode}: nothing special has 2846 * been specified for the reason for this level. 2847 */ 2848 public static final int REASON_UNKNOWN = 0; 2849 2850 /** 2851 * Constant for {@link #importanceReasonCode}: one of the application's 2852 * content providers is being used by another process. The pid of 2853 * the client process is in {@link #importanceReasonPid} and the 2854 * target provider in this process is in 2855 * {@link #importanceReasonComponent}. 2856 */ 2857 public static final int REASON_PROVIDER_IN_USE = 1; 2858 2859 /** 2860 * Constant for {@link #importanceReasonCode}: one of the application's 2861 * content providers is being used by another process. The pid of 2862 * the client process is in {@link #importanceReasonPid} and the 2863 * target provider in this process is in 2864 * {@link #importanceReasonComponent}. 2865 */ 2866 public static final int REASON_SERVICE_IN_USE = 2; 2867 2868 /** 2869 * The reason for {@link #importance}, if any. 2870 */ 2871 public int importanceReasonCode; 2872 2873 /** 2874 * For the specified values of {@link #importanceReasonCode}, this 2875 * is the process ID of the other process that is a client of this 2876 * process. This will be 0 if no other process is using this one. 2877 */ 2878 public int importanceReasonPid; 2879 2880 /** 2881 * For the specified values of {@link #importanceReasonCode}, this 2882 * is the name of the component that is being used in this process. 2883 */ 2884 public ComponentName importanceReasonComponent; 2885 2886 /** 2887 * When {@link #importanceReasonPid} is non-0, this is the importance 2888 * of the other pid. @hide 2889 */ 2890 public int importanceReasonImportance; 2891 2892 /** 2893 * Current process state, as per PROCESS_STATE_* constants. 2894 * @hide 2895 */ 2896 public int processState; 2897 2898 public RunningAppProcessInfo() { 2899 importance = IMPORTANCE_FOREGROUND; 2900 importanceReasonCode = REASON_UNKNOWN; 2901 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2902 } 2903 2904 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2905 processName = pProcessName; 2906 pid = pPid; 2907 pkgList = pArr; 2908 } 2909 2910 public int describeContents() { 2911 return 0; 2912 } 2913 2914 public void writeToParcel(Parcel dest, int flags) { 2915 dest.writeString(processName); 2916 dest.writeInt(pid); 2917 dest.writeInt(uid); 2918 dest.writeStringArray(pkgList); 2919 dest.writeInt(this.flags); 2920 dest.writeInt(lastTrimLevel); 2921 dest.writeInt(importance); 2922 dest.writeInt(lru); 2923 dest.writeInt(importanceReasonCode); 2924 dest.writeInt(importanceReasonPid); 2925 ComponentName.writeToParcel(importanceReasonComponent, dest); 2926 dest.writeInt(importanceReasonImportance); 2927 dest.writeInt(processState); 2928 } 2929 2930 public void readFromParcel(Parcel source) { 2931 processName = source.readString(); 2932 pid = source.readInt(); 2933 uid = source.readInt(); 2934 pkgList = source.readStringArray(); 2935 flags = source.readInt(); 2936 lastTrimLevel = source.readInt(); 2937 importance = source.readInt(); 2938 lru = source.readInt(); 2939 importanceReasonCode = source.readInt(); 2940 importanceReasonPid = source.readInt(); 2941 importanceReasonComponent = ComponentName.readFromParcel(source); 2942 importanceReasonImportance = source.readInt(); 2943 processState = source.readInt(); 2944 } 2945 2946 public static final Creator<RunningAppProcessInfo> CREATOR = 2947 new Creator<RunningAppProcessInfo>() { 2948 public RunningAppProcessInfo createFromParcel(Parcel source) { 2949 return new RunningAppProcessInfo(source); 2950 } 2951 public RunningAppProcessInfo[] newArray(int size) { 2952 return new RunningAppProcessInfo[size]; 2953 } 2954 }; 2955 2956 private RunningAppProcessInfo(Parcel source) { 2957 readFromParcel(source); 2958 } 2959 } 2960 2961 /** 2962 * Returns a list of application processes installed on external media 2963 * that are running on the device. 2964 * 2965 * <p><b>Note: this method is only intended for debugging or building 2966 * a user-facing process management UI.</b></p> 2967 * 2968 * @return Returns a list of ApplicationInfo records, or null if none 2969 * This list ordering is not specified. 2970 * @hide 2971 */ 2972 public List<ApplicationInfo> getRunningExternalApplications() { 2973 try { 2974 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2975 } catch (RemoteException e) { 2976 throw e.rethrowFromSystemServer(); 2977 } 2978 } 2979 2980 /** 2981 * Sets the memory trim mode for a process and schedules a memory trim operation. 2982 * 2983 * <p><b>Note: this method is only intended for testing framework.</b></p> 2984 * 2985 * @return Returns true if successful. 2986 * @hide 2987 */ 2988 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2989 try { 2990 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2991 level); 2992 } catch (RemoteException e) { 2993 throw e.rethrowFromSystemServer(); 2994 } 2995 } 2996 2997 /** 2998 * Returns a list of application processes that are running on the device. 2999 * 3000 * <p><b>Note: this method is only intended for debugging or building 3001 * a user-facing process management UI.</b></p> 3002 * 3003 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3004 * running processes (it will not return an empty list). This list ordering is not 3005 * specified. 3006 */ 3007 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3008 try { 3009 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 3010 } catch (RemoteException e) { 3011 throw e.rethrowFromSystemServer(); 3012 } 3013 } 3014 3015 /** 3016 * Return the importance of a given package name, based on the processes that are 3017 * currently running. The return value is one of the importance constants defined 3018 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3019 * processes that this package has code running inside of. If there are no processes 3020 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3021 * @hide 3022 */ 3023 @SystemApi 3024 public int getPackageImportance(String packageName) { 3025 try { 3026 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 3027 mContext.getOpPackageName()); 3028 return RunningAppProcessInfo.procStateToImportance(procState); 3029 } catch (RemoteException e) { 3030 throw e.rethrowFromSystemServer(); 3031 } 3032 } 3033 3034 /** 3035 * Return global memory state information for the calling process. This 3036 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3037 * only fields that will be filled in are 3038 * {@link RunningAppProcessInfo#pid}, 3039 * {@link RunningAppProcessInfo#uid}, 3040 * {@link RunningAppProcessInfo#lastTrimLevel}, 3041 * {@link RunningAppProcessInfo#importance}, 3042 * {@link RunningAppProcessInfo#lru}, and 3043 * {@link RunningAppProcessInfo#importanceReasonCode}. 3044 */ 3045 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3046 try { 3047 ActivityManagerNative.getDefault().getMyMemoryState(outState); 3048 } catch (RemoteException e) { 3049 throw e.rethrowFromSystemServer(); 3050 } 3051 } 3052 3053 /** 3054 * Return information about the memory usage of one or more processes. 3055 * 3056 * <p><b>Note: this method is only intended for debugging or building 3057 * a user-facing process management UI.</b></p> 3058 * 3059 * @param pids The pids of the processes whose memory usage is to be 3060 * retrieved. 3061 * @return Returns an array of memory information, one for each 3062 * requested pid. 3063 */ 3064 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3065 try { 3066 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 3067 } catch (RemoteException e) { 3068 throw e.rethrowFromSystemServer(); 3069 } 3070 } 3071 3072 /** 3073 * @deprecated This is now just a wrapper for 3074 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3075 * is no longer available to applications because it allows them to 3076 * break other applications by removing their alarms, stopping their 3077 * services, etc. 3078 */ 3079 @Deprecated 3080 public void restartPackage(String packageName) { 3081 killBackgroundProcesses(packageName); 3082 } 3083 3084 /** 3085 * Have the system immediately kill all background processes associated 3086 * with the given package. This is the same as the kernel killing those 3087 * processes to reclaim memory; the system will take care of restarting 3088 * these processes in the future as needed. 3089 * 3090 * <p>You must hold the permission 3091 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3092 * call this method. 3093 * 3094 * @param packageName The name of the package whose processes are to 3095 * be killed. 3096 */ 3097 public void killBackgroundProcesses(String packageName) { 3098 try { 3099 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 3100 UserHandle.myUserId()); 3101 } catch (RemoteException e) { 3102 throw e.rethrowFromSystemServer(); 3103 } 3104 } 3105 3106 /** 3107 * Kills the specified UID. 3108 * @param uid The UID to kill. 3109 * @param reason The reason for the kill. 3110 * 3111 * @hide 3112 */ 3113 @SystemApi 3114 @RequiresPermission(Manifest.permission.KILL_UID) 3115 public void killUid(int uid, String reason) { 3116 try { 3117 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3118 UserHandle.getUserId(uid), reason); 3119 } catch (RemoteException e) { 3120 throw e.rethrowFromSystemServer(); 3121 } 3122 } 3123 3124 /** 3125 * Have the system perform a force stop of everything associated with 3126 * the given application package. All processes that share its uid 3127 * will be killed, all services it has running stopped, all activities 3128 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3129 * broadcast will be sent, so that any of its registered alarms can 3130 * be stopped, notifications removed, etc. 3131 * 3132 * <p>You must hold the permission 3133 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3134 * call this method. 3135 * 3136 * @param packageName The name of the package to be stopped. 3137 * @param userId The user for which the running package is to be stopped. 3138 * 3139 * @hide This is not available to third party applications due to 3140 * it allowing them to break other applications by stopping their 3141 * services, removing their alarms, etc. 3142 */ 3143 public void forceStopPackageAsUser(String packageName, int userId) { 3144 try { 3145 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3146 } catch (RemoteException e) { 3147 throw e.rethrowFromSystemServer(); 3148 } 3149 } 3150 3151 /** 3152 * @see #forceStopPackageAsUser(String, int) 3153 * @hide 3154 */ 3155 public void forceStopPackage(String packageName) { 3156 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3157 } 3158 3159 /** 3160 * Get the device configuration attributes. 3161 */ 3162 public ConfigurationInfo getDeviceConfigurationInfo() { 3163 try { 3164 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3165 } catch (RemoteException e) { 3166 throw e.rethrowFromSystemServer(); 3167 } 3168 } 3169 3170 /** 3171 * Get the preferred density of icons for the launcher. This is used when 3172 * custom drawables are created (e.g., for shortcuts). 3173 * 3174 * @return density in terms of DPI 3175 */ 3176 public int getLauncherLargeIconDensity() { 3177 final Resources res = mContext.getResources(); 3178 final int density = res.getDisplayMetrics().densityDpi; 3179 final int sw = res.getConfiguration().smallestScreenWidthDp; 3180 3181 if (sw < 600) { 3182 // Smaller than approx 7" tablets, use the regular icon size. 3183 return density; 3184 } 3185 3186 switch (density) { 3187 case DisplayMetrics.DENSITY_LOW: 3188 return DisplayMetrics.DENSITY_MEDIUM; 3189 case DisplayMetrics.DENSITY_MEDIUM: 3190 return DisplayMetrics.DENSITY_HIGH; 3191 case DisplayMetrics.DENSITY_TV: 3192 return DisplayMetrics.DENSITY_XHIGH; 3193 case DisplayMetrics.DENSITY_HIGH: 3194 return DisplayMetrics.DENSITY_XHIGH; 3195 case DisplayMetrics.DENSITY_XHIGH: 3196 return DisplayMetrics.DENSITY_XXHIGH; 3197 case DisplayMetrics.DENSITY_XXHIGH: 3198 return DisplayMetrics.DENSITY_XHIGH * 2; 3199 default: 3200 // The density is some abnormal value. Return some other 3201 // abnormal value that is a reasonable scaling of it. 3202 return (int)((density*1.5f)+.5f); 3203 } 3204 } 3205 3206 /** 3207 * Get the preferred launcher icon size. This is used when custom drawables 3208 * are created (e.g., for shortcuts). 3209 * 3210 * @return dimensions of square icons in terms of pixels 3211 */ 3212 public int getLauncherLargeIconSize() { 3213 return getLauncherLargeIconSizeInner(mContext); 3214 } 3215 3216 static int getLauncherLargeIconSizeInner(Context context) { 3217 final Resources res = context.getResources(); 3218 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3219 final int sw = res.getConfiguration().smallestScreenWidthDp; 3220 3221 if (sw < 600) { 3222 // Smaller than approx 7" tablets, use the regular icon size. 3223 return size; 3224 } 3225 3226 final int density = res.getDisplayMetrics().densityDpi; 3227 3228 switch (density) { 3229 case DisplayMetrics.DENSITY_LOW: 3230 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3231 case DisplayMetrics.DENSITY_MEDIUM: 3232 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3233 case DisplayMetrics.DENSITY_TV: 3234 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3235 case DisplayMetrics.DENSITY_HIGH: 3236 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3237 case DisplayMetrics.DENSITY_XHIGH: 3238 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3239 case DisplayMetrics.DENSITY_XXHIGH: 3240 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3241 default: 3242 // The density is some abnormal value. Return some other 3243 // abnormal value that is a reasonable scaling of it. 3244 return (int)((size*1.5f) + .5f); 3245 } 3246 } 3247 3248 /** 3249 * Returns "true" if the user interface is currently being messed with 3250 * by a monkey. 3251 */ 3252 public static boolean isUserAMonkey() { 3253 try { 3254 return ActivityManagerNative.getDefault().isUserAMonkey(); 3255 } catch (RemoteException e) { 3256 throw e.rethrowFromSystemServer(); 3257 } 3258 } 3259 3260 /** 3261 * Returns "true" if device is running in a test harness. 3262 */ 3263 public static boolean isRunningInTestHarness() { 3264 return SystemProperties.getBoolean("ro.test_harness", false); 3265 } 3266 3267 /** 3268 * Returns the launch count of each installed package. 3269 * 3270 * @hide 3271 */ 3272 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3273 try { 3274 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3275 ServiceManager.getService("usagestats")); 3276 if (usageStatsService == null) { 3277 return new HashMap<String, Integer>(); 3278 } 3279 3280 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3281 ActivityThread.currentPackageName()); 3282 if (allPkgUsageStats == null) { 3283 return new HashMap<String, Integer>(); 3284 } 3285 3286 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3287 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3288 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3289 } 3290 3291 return launchCounts; 3292 } catch (RemoteException e) { 3293 Log.w(TAG, "Could not query launch counts", e); 3294 return new HashMap<String, Integer>(); 3295 } 3296 }*/ 3297 3298 /** @hide */ 3299 public static int checkComponentPermission(String permission, int uid, 3300 int owningUid, boolean exported) { 3301 // Root, system server get to do everything. 3302 final int appId = UserHandle.getAppId(uid); 3303 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3304 return PackageManager.PERMISSION_GRANTED; 3305 } 3306 // Isolated processes don't get any permissions. 3307 if (UserHandle.isIsolated(uid)) { 3308 return PackageManager.PERMISSION_DENIED; 3309 } 3310 // If there is a uid that owns whatever is being accessed, it has 3311 // blanket access to it regardless of the permissions it requires. 3312 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3313 return PackageManager.PERMISSION_GRANTED; 3314 } 3315 // If the target is not exported, then nobody else can get to it. 3316 if (!exported) { 3317 /* 3318 RuntimeException here = new RuntimeException("here"); 3319 here.fillInStackTrace(); 3320 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3321 here); 3322 */ 3323 return PackageManager.PERMISSION_DENIED; 3324 } 3325 if (permission == null) { 3326 return PackageManager.PERMISSION_GRANTED; 3327 } 3328 try { 3329 return AppGlobals.getPackageManager() 3330 .checkUidPermission(permission, uid); 3331 } catch (RemoteException e) { 3332 throw e.rethrowFromSystemServer(); 3333 } 3334 } 3335 3336 /** @hide */ 3337 public static int checkUidPermission(String permission, int uid) { 3338 try { 3339 return AppGlobals.getPackageManager() 3340 .checkUidPermission(permission, uid); 3341 } catch (RemoteException e) { 3342 throw e.rethrowFromSystemServer(); 3343 } 3344 } 3345 3346 /** 3347 * @hide 3348 * Helper for dealing with incoming user arguments to system service calls. 3349 * Takes care of checking permissions and converting USER_CURRENT to the 3350 * actual current user. 3351 * 3352 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3353 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3354 * @param userId The user id argument supplied by the caller -- this is the user 3355 * they want to run as. 3356 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3357 * to get a USER_ALL returned and deal with it correctly. If false, 3358 * an exception will be thrown if USER_ALL is supplied. 3359 * @param requireFull If true, the caller must hold 3360 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3361 * different user than their current process; otherwise they must hold 3362 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3363 * @param name Optional textual name of the incoming call; only for generating error messages. 3364 * @param callerPackage Optional package name of caller; only for error messages. 3365 * 3366 * @return Returns the user ID that the call should run as. Will always be a concrete 3367 * user number, unless <var>allowAll</var> is true in which case it could also be 3368 * USER_ALL. 3369 */ 3370 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3371 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3372 if (UserHandle.getUserId(callingUid) == userId) { 3373 return userId; 3374 } 3375 try { 3376 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3377 callingUid, userId, allowAll, requireFull, name, callerPackage); 3378 } catch (RemoteException e) { 3379 throw e.rethrowFromSystemServer(); 3380 } 3381 } 3382 3383 /** 3384 * Gets the userId of the current foreground user. Requires system permissions. 3385 * @hide 3386 */ 3387 @SystemApi 3388 public static int getCurrentUser() { 3389 UserInfo ui; 3390 try { 3391 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3392 return ui != null ? ui.id : 0; 3393 } catch (RemoteException e) { 3394 throw e.rethrowFromSystemServer(); 3395 } 3396 } 3397 3398 /** 3399 * @param userid the user's id. Zero indicates the default user. 3400 * @hide 3401 */ 3402 public boolean switchUser(int userid) { 3403 try { 3404 return ActivityManagerNative.getDefault().switchUser(userid); 3405 } catch (RemoteException e) { 3406 throw e.rethrowFromSystemServer(); 3407 } 3408 } 3409 3410 /** 3411 * Logs out current current foreground user by switching to the system user and stopping the 3412 * user being switched from. 3413 * @hide 3414 */ 3415 public static void logoutCurrentUser() { 3416 int currentUser = ActivityManager.getCurrentUser(); 3417 if (currentUser != UserHandle.USER_SYSTEM) { 3418 try { 3419 ActivityManagerNative.getDefault().switchUser(UserHandle.USER_SYSTEM); 3420 ActivityManagerNative.getDefault().stopUser(currentUser, /* force= */ false, null); 3421 } catch (RemoteException e) { 3422 e.rethrowFromSystemServer(); 3423 } 3424 } 3425 } 3426 3427 /** {@hide} */ 3428 public static final int FLAG_OR_STOPPED = 1 << 0; 3429 /** {@hide} */ 3430 public static final int FLAG_AND_LOCKED = 1 << 1; 3431 /** {@hide} */ 3432 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3433 /** {@hide} */ 3434 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3435 3436 /** 3437 * Return whether the given user is actively running. This means that 3438 * the user is in the "started" state, not "stopped" -- it is currently 3439 * allowed to run code through scheduled alarms, receiving broadcasts, 3440 * etc. A started user may be either the current foreground user or a 3441 * background user; the result here does not distinguish between the two. 3442 * @param userid the user's id. Zero indicates the default user. 3443 * @hide 3444 */ 3445 public boolean isUserRunning(int userId) { 3446 try { 3447 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3448 } catch (RemoteException e) { 3449 throw e.rethrowFromSystemServer(); 3450 } 3451 } 3452 3453 /** {@hide} */ 3454 public boolean isVrModePackageEnabled(ComponentName component) { 3455 try { 3456 return ActivityManagerNative.getDefault().isVrModePackageEnabled(component); 3457 } catch (RemoteException e) { 3458 throw e.rethrowFromSystemServer(); 3459 } 3460 } 3461 3462 /** 3463 * Perform a system dump of various state associated with the given application 3464 * package name. This call blocks while the dump is being performed, so should 3465 * not be done on a UI thread. The data will be written to the given file 3466 * descriptor as text. An application must hold the 3467 * {@link android.Manifest.permission#DUMP} permission to make this call. 3468 * @param fd The file descriptor that the dump should be written to. The file 3469 * descriptor is <em>not</em> closed by this function; the caller continues to 3470 * own it. 3471 * @param packageName The name of the package that is to be dumped. 3472 */ 3473 public void dumpPackageState(FileDescriptor fd, String packageName) { 3474 dumpPackageStateStatic(fd, packageName); 3475 } 3476 3477 /** 3478 * @hide 3479 */ 3480 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3481 FileOutputStream fout = new FileOutputStream(fd); 3482 PrintWriter pw = new FastPrintWriter(fout); 3483 dumpService(pw, fd, "package", new String[] { packageName }); 3484 pw.println(); 3485 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3486 "-a", "package", packageName }); 3487 pw.println(); 3488 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3489 pw.println(); 3490 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3491 pw.println(); 3492 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3493 pw.println(); 3494 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3495 pw.flush(); 3496 } 3497 3498 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3499 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3500 IBinder service = ServiceManager.checkService(name); 3501 if (service == null) { 3502 pw.println(" (Service not found)"); 3503 return; 3504 } 3505 TransferPipe tp = null; 3506 try { 3507 pw.flush(); 3508 tp = new TransferPipe(); 3509 tp.setBufferPrefix(" "); 3510 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3511 tp.go(fd, 10000); 3512 } catch (Throwable e) { 3513 if (tp != null) { 3514 tp.kill(); 3515 } 3516 pw.println("Failure dumping service:"); 3517 e.printStackTrace(pw); 3518 } 3519 } 3520 3521 /** 3522 * Request that the system start watching for the calling process to exceed a pss 3523 * size as given here. Once called, the system will look for any occasions where it 3524 * sees the associated process with a larger pss size and, when this happens, automatically 3525 * pull a heap dump from it and allow the user to share the data. Note that this request 3526 * continues running even if the process is killed and restarted. To remove the watch, 3527 * use {@link #clearWatchHeapLimit()}. 3528 * 3529 * <p>This API only work if the calling process has been marked as 3530 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3531 * (userdebug or eng) build.</p> 3532 * 3533 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3534 * handle heap limit reports themselves.</p> 3535 * 3536 * @param pssSize The size in bytes to set the limit at. 3537 */ 3538 public void setWatchHeapLimit(long pssSize) { 3539 try { 3540 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3541 mContext.getPackageName()); 3542 } catch (RemoteException e) { 3543 throw e.rethrowFromSystemServer(); 3544 } 3545 } 3546 3547 /** 3548 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3549 * If your package has an activity handling this action, it will be launched with the 3550 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3551 * match the activty must support this action and a MIME type of "*/*". 3552 */ 3553 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3554 3555 /** 3556 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3557 */ 3558 public void clearWatchHeapLimit() { 3559 try { 3560 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3561 } catch (RemoteException e) { 3562 throw e.rethrowFromSystemServer(); 3563 } 3564 } 3565 3566 /** 3567 * @hide 3568 */ 3569 public void startLockTaskMode(int taskId) { 3570 try { 3571 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3572 } catch (RemoteException e) { 3573 throw e.rethrowFromSystemServer(); 3574 } 3575 } 3576 3577 /** 3578 * @hide 3579 */ 3580 public void stopLockTaskMode() { 3581 try { 3582 ActivityManagerNative.getDefault().stopLockTaskMode(); 3583 } catch (RemoteException e) { 3584 throw e.rethrowFromSystemServer(); 3585 } 3586 } 3587 3588 /** 3589 * Return whether currently in lock task mode. When in this mode 3590 * no new tasks can be created or switched to. 3591 * 3592 * @see Activity#startLockTask() 3593 * 3594 * @deprecated Use {@link #getLockTaskModeState} instead. 3595 */ 3596 public boolean isInLockTaskMode() { 3597 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3598 } 3599 3600 /** 3601 * Return the current state of task locking. The three possible outcomes 3602 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3603 * and {@link #LOCK_TASK_MODE_PINNED}. 3604 * 3605 * @see Activity#startLockTask() 3606 */ 3607 public int getLockTaskModeState() { 3608 try { 3609 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3610 } catch (RemoteException e) { 3611 throw e.rethrowFromSystemServer(); 3612 } 3613 } 3614 3615 /** 3616 * The AppTask allows you to manage your own application's tasks. 3617 * See {@link android.app.ActivityManager#getAppTasks()} 3618 */ 3619 public static class AppTask { 3620 private IAppTask mAppTaskImpl; 3621 3622 /** @hide */ 3623 public AppTask(IAppTask task) { 3624 mAppTaskImpl = task; 3625 } 3626 3627 /** 3628 * Finishes all activities in this task and removes it from the recent tasks list. 3629 */ 3630 public void finishAndRemoveTask() { 3631 try { 3632 mAppTaskImpl.finishAndRemoveTask(); 3633 } catch (RemoteException e) { 3634 throw e.rethrowFromSystemServer(); 3635 } 3636 } 3637 3638 /** 3639 * Get the RecentTaskInfo associated with this task. 3640 * 3641 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3642 */ 3643 public RecentTaskInfo getTaskInfo() { 3644 try { 3645 return mAppTaskImpl.getTaskInfo(); 3646 } catch (RemoteException e) { 3647 throw e.rethrowFromSystemServer(); 3648 } 3649 } 3650 3651 /** 3652 * Bring this task to the foreground. If it contains activities, they will be 3653 * brought to the foreground with it and their instances re-created if needed. 3654 * If it doesn't contain activities, the root activity of the task will be 3655 * re-launched. 3656 */ 3657 public void moveToFront() { 3658 try { 3659 mAppTaskImpl.moveToFront(); 3660 } catch (RemoteException e) { 3661 throw e.rethrowFromSystemServer(); 3662 } 3663 } 3664 3665 /** 3666 * Start an activity in this task. Brings the task to the foreground. If this task 3667 * is not currently active (that is, its id < 0), then a new activity for the given 3668 * Intent will be launched as the root of the task and the task brought to the 3669 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3670 * an activity to launch in a new task, then a new activity for the given Intent will 3671 * be launched on top of the task and the task brought to the foreground. If this 3672 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3673 * or would otherwise be launched in to a new task, then the activity not launched but 3674 * this task be brought to the foreground and a new intent delivered to the top 3675 * activity if appropriate. 3676 * 3677 * <p>In other words, you generally want to use an Intent here that does not specify 3678 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3679 * and let the system do the right thing.</p> 3680 * 3681 * @param intent The Intent describing the new activity to be launched on the task. 3682 * @param options Optional launch options. 3683 * 3684 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3685 */ 3686 public void startActivity(Context context, Intent intent, Bundle options) { 3687 ActivityThread thread = ActivityThread.currentActivityThread(); 3688 thread.getInstrumentation().execStartActivityFromAppTask(context, 3689 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3690 } 3691 3692 /** 3693 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3694 * Intent of this AppTask. 3695 * 3696 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3697 * be set; otherwise, it will be cleared. 3698 */ 3699 public void setExcludeFromRecents(boolean exclude) { 3700 try { 3701 mAppTaskImpl.setExcludeFromRecents(exclude); 3702 } catch (RemoteException e) { 3703 throw e.rethrowFromSystemServer(); 3704 } 3705 } 3706 } 3707} 3708