ActivityManager.java revision 058f1e4468bd54d0ac39fdf81b4df7221b28721a
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.RequiresPermission; 24import android.annotation.SystemApi; 25import android.annotation.TestApi; 26import android.content.pm.ActivityInfo; 27import android.content.res.Configuration; 28import android.graphics.Canvas; 29import android.graphics.Matrix; 30import android.graphics.Point; 31import android.os.BatteryStats; 32import android.os.IBinder; 33import android.os.ParcelFileDescriptor; 34 35import com.android.internal.app.procstats.ProcessStats; 36import com.android.internal.os.RoSystemProperties; 37import com.android.internal.os.TransferPipe; 38import com.android.internal.util.FastPrintWriter; 39 40import android.content.ComponentName; 41import android.content.Context; 42import android.content.Intent; 43import android.content.UriPermission; 44import android.content.pm.ApplicationInfo; 45import android.content.pm.ConfigurationInfo; 46import android.content.pm.IPackageDataObserver; 47import android.content.pm.PackageManager; 48import android.content.pm.ParceledListSlice; 49import android.content.pm.UserInfo; 50import android.content.res.Resources; 51import android.graphics.Bitmap; 52import android.graphics.Color; 53import android.graphics.Rect; 54import android.os.Bundle; 55import android.os.Debug; 56import android.os.Handler; 57import android.os.Parcel; 58import android.os.Parcelable; 59import android.os.Process; 60import android.os.RemoteException; 61import android.os.ServiceManager; 62import android.os.SystemProperties; 63import android.os.UserHandle; 64import android.text.TextUtils; 65import android.util.ArrayMap; 66import android.util.DisplayMetrics; 67import android.util.Singleton; 68import android.util.Size; 69 70import org.xmlpull.v1.XmlSerializer; 71 72import java.io.FileDescriptor; 73import java.io.FileOutputStream; 74import java.io.IOException; 75import java.io.PrintWriter; 76import java.lang.annotation.Retention; 77import java.lang.annotation.RetentionPolicy; 78import java.util.ArrayList; 79import java.util.List; 80 81/** 82 * Interact with the overall activities running in the system. 83 */ 84public class ActivityManager { 85 private static String TAG = "ActivityManager"; 86 87 private static int gMaxRecentTasks = -1; 88 89 private final Context mContext; 90 private final Handler mHandler; 91 92 static final class UidObserver extends IUidObserver.Stub { 93 final OnUidImportanceListener mListener; 94 final int mImportanceCutpoint; 95 int mLastImportance; 96 97 UidObserver(OnUidImportanceListener listener, int importanceCutpoint) { 98 mListener = listener; 99 mImportanceCutpoint = importanceCutpoint; 100 } 101 102 @Override 103 public void onUidStateChanged(int uid, int procState) { 104 final boolean lastAboveCut = mLastImportance <= mImportanceCutpoint; 105 final int importance = RunningAppProcessInfo.procStateToImportance(procState); 106 final boolean newAboveCut = importance <= mImportanceCutpoint; 107 /* 108 Log.d(TAG, "Uid " + uid + " state change from " + mLastImportance + " to " 109 + importance + " @ cut " + mImportanceCutpoint 110 + ": lastAbove=" + lastAboveCut + " newAbove=" + newAboveCut); 111 */ 112 mLastImportance = importance; 113 if (lastAboveCut != newAboveCut) { 114 mListener.onUidImportance(uid, importance); 115 } 116 } 117 118 @Override 119 public void onUidGone(int uid) { 120 mLastImportance = RunningAppProcessInfo.IMPORTANCE_GONE; 121 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 122 } 123 124 @Override 125 public void onUidActive(int uid) { 126 } 127 128 @Override 129 public void onUidIdle(int uid) { 130 } 131 } 132 133 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 134 135 /** 136 * Defines acceptable types of bugreports. 137 * @hide 138 */ 139 @Retention(RetentionPolicy.SOURCE) 140 @IntDef({ 141 BUGREPORT_OPTION_FULL, 142 BUGREPORT_OPTION_INTERACTIVE, 143 BUGREPORT_OPTION_REMOTE, 144 BUGREPORT_OPTION_WEAR 145 }) 146 public @interface BugreportMode {} 147 /** 148 * Takes a bugreport without user interference (and hence causing less 149 * interference to the system), but includes all sections. 150 * @hide 151 */ 152 public static final int BUGREPORT_OPTION_FULL = 0; 153 /** 154 * Allows user to monitor progress and enter additional data; might not include all 155 * sections. 156 * @hide 157 */ 158 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 159 /** 160 * Takes a bugreport requested remotely by administrator of the Device Owner app, 161 * not the device's user. 162 * @hide 163 */ 164 public static final int BUGREPORT_OPTION_REMOTE = 2; 165 /** 166 * Takes a bugreport on a wearable device. 167 * @hide 168 */ 169 public static final int BUGREPORT_OPTION_WEAR = 3; 170 171 /** 172 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 173 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 174 * uninstalled in lieu of the declaring one. The package named here must be 175 * signed with the same certificate as the one declaring the {@code <meta-data>}. 176 */ 177 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 178 179 /** 180 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 181 * @hide 182 */ 183 public static final int START_VOICE_HIDDEN_SESSION = -10; 184 185 /** 186 * Result for IActivityManager.startVoiceActivity: active session does not match 187 * the requesting token. 188 * @hide 189 */ 190 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 191 192 /** 193 * Result for IActivityManager.startActivity: trying to start a background user 194 * activity that shouldn't be displayed for all users. 195 * @hide 196 */ 197 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 198 199 /** 200 * Result for IActivityManager.startActivity: trying to start an activity under voice 201 * control when that activity does not support the VOICE category. 202 * @hide 203 */ 204 public static final int START_NOT_VOICE_COMPATIBLE = -7; 205 206 /** 207 * Result for IActivityManager.startActivity: an error where the 208 * start had to be canceled. 209 * @hide 210 */ 211 public static final int START_CANCELED = -6; 212 213 /** 214 * Result for IActivityManager.startActivity: an error where the 215 * thing being started is not an activity. 216 * @hide 217 */ 218 public static final int START_NOT_ACTIVITY = -5; 219 220 /** 221 * Result for IActivityManager.startActivity: an error where the 222 * caller does not have permission to start the activity. 223 * @hide 224 */ 225 public static final int START_PERMISSION_DENIED = -4; 226 227 /** 228 * Result for IActivityManager.startActivity: an error where the 229 * caller has requested both to forward a result and to receive 230 * a result. 231 * @hide 232 */ 233 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 234 235 /** 236 * Result for IActivityManager.startActivity: an error where the 237 * requested class is not found. 238 * @hide 239 */ 240 public static final int START_CLASS_NOT_FOUND = -2; 241 242 /** 243 * Result for IActivityManager.startActivity: an error where the 244 * given Intent could not be resolved to an activity. 245 * @hide 246 */ 247 public static final int START_INTENT_NOT_RESOLVED = -1; 248 249 /** 250 * Result for IActivityManaqer.startActivity: the activity was started 251 * successfully as normal. 252 * @hide 253 */ 254 public static final int START_SUCCESS = 0; 255 256 /** 257 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 258 * be executed if it is the recipient, and that is indeed the case. 259 * @hide 260 */ 261 public static final int START_RETURN_INTENT_TO_CALLER = 1; 262 263 /** 264 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 265 * a task was simply brought to the foreground. 266 * @hide 267 */ 268 public static final int START_TASK_TO_FRONT = 2; 269 270 /** 271 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 272 * the given Intent was given to the existing top activity. 273 * @hide 274 */ 275 public static final int START_DELIVERED_TO_TOP = 3; 276 277 /** 278 * Result for IActivityManaqer.startActivity: request was canceled because 279 * app switches are temporarily canceled to ensure the user's last request 280 * (such as pressing home) is performed. 281 * @hide 282 */ 283 public static final int START_SWITCHES_CANCELED = 4; 284 285 /** 286 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 287 * while in Lock Task Mode. 288 * @hide 289 */ 290 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 291 292 /** 293 * Flag for IActivityManaqer.startActivity: do special start mode where 294 * a new activity is launched only if it is needed. 295 * @hide 296 */ 297 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 298 299 /** 300 * Flag for IActivityManaqer.startActivity: launch the app for 301 * debugging. 302 * @hide 303 */ 304 public static final int START_FLAG_DEBUG = 1<<1; 305 306 /** 307 * Flag for IActivityManaqer.startActivity: launch the app for 308 * allocation tracking. 309 * @hide 310 */ 311 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 312 313 /** 314 * Flag for IActivityManaqer.startActivity: launch the app with 315 * native debugging support. 316 * @hide 317 */ 318 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 319 320 /** 321 * Result for IActivityManaqer.broadcastIntent: success! 322 * @hide 323 */ 324 public static final int BROADCAST_SUCCESS = 0; 325 326 /** 327 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 328 * a sticky intent without appropriate permission. 329 * @hide 330 */ 331 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 332 333 /** 334 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 335 * to a stopped user. Fail. 336 * @hide 337 */ 338 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 339 340 /** 341 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 342 * for a sendBroadcast operation. 343 * @hide 344 */ 345 public static final int INTENT_SENDER_BROADCAST = 1; 346 347 /** 348 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 349 * for a startActivity operation. 350 * @hide 351 */ 352 public static final int INTENT_SENDER_ACTIVITY = 2; 353 354 /** 355 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 356 * for an activity result operation. 357 * @hide 358 */ 359 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 360 361 /** 362 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 363 * for a startService operation. 364 * @hide 365 */ 366 public static final int INTENT_SENDER_SERVICE = 4; 367 368 /** @hide User operation call: success! */ 369 public static final int USER_OP_SUCCESS = 0; 370 371 /** @hide User operation call: given user id is not known. */ 372 public static final int USER_OP_UNKNOWN_USER = -1; 373 374 /** @hide User operation call: given user id is the current user, can't be stopped. */ 375 public static final int USER_OP_IS_CURRENT = -2; 376 377 /** @hide User operation call: system user can't be stopped. */ 378 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 379 380 /** @hide User operation call: one of related users cannot be stopped. */ 381 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 382 383 /** @hide Process does not exist. */ 384 public static final int PROCESS_STATE_NONEXISTENT = -1; 385 386 /** @hide Process is a persistent system process. */ 387 public static final int PROCESS_STATE_PERSISTENT = 0; 388 389 /** @hide Process is a persistent system process and is doing UI. */ 390 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 391 392 /** @hide Process is hosting the current top activities. Note that this covers 393 * all activities that are visible to the user. */ 394 public static final int PROCESS_STATE_TOP = 2; 395 396 /** @hide Process is hosting a foreground service due to a system binding. */ 397 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 398 399 /** @hide Process is hosting a foreground service. */ 400 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 401 402 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 403 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 404 405 /** @hide Process is important to the user, and something they are aware of. */ 406 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 407 408 /** @hide Process is important to the user, but not something they are aware of. */ 409 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 410 411 /** @hide Process is in the background running a backup/restore operation. */ 412 public static final int PROCESS_STATE_BACKUP = 8; 413 414 /** @hide Process is in the background, but it can't restore its state so we want 415 * to try to avoid killing it. */ 416 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 417 418 /** @hide Process is in the background running a service. Unlike oom_adj, this level 419 * is used for both the normal running in background state and the executing 420 * operations state. */ 421 public static final int PROCESS_STATE_SERVICE = 10; 422 423 /** @hide Process is in the background running a receiver. Note that from the 424 * perspective of oom_adj receivers run at a higher foreground level, but for our 425 * prioritization here that is not necessary and putting them below services means 426 * many fewer changes in some process states as they receive broadcasts. */ 427 public static final int PROCESS_STATE_RECEIVER = 11; 428 429 /** @hide Process is in the background but hosts the home activity. */ 430 public static final int PROCESS_STATE_HOME = 12; 431 432 /** @hide Process is in the background but hosts the last shown activity. */ 433 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 434 435 /** @hide Process is being cached for later use and contains activities. */ 436 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 437 438 /** @hide Process is being cached for later use and is a client of another cached 439 * process that contains activities. */ 440 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 441 442 /** @hide Process is being cached for later use and is empty. */ 443 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 444 445 /** @hide The lowest process state number */ 446 public static final int MIN_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 447 448 /** @hide The highest process state number */ 449 public static final int MAX_PROCESS_STATE = PROCESS_STATE_CACHED_EMPTY; 450 451 /** @hide Should this process state be considered a background state? */ 452 public static final boolean isProcStateBackground(int procState) { 453 return procState >= PROCESS_STATE_BACKUP; 454 } 455 456 /** @hide requestType for assist context: only basic information. */ 457 public static final int ASSIST_CONTEXT_BASIC = 0; 458 459 /** @hide requestType for assist context: generate full AssistStructure. */ 460 public static final int ASSIST_CONTEXT_FULL = 1; 461 462 /** @hide Flag for registerUidObserver: report changes in process state. */ 463 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 464 465 /** @hide Flag for registerUidObserver: report uid gone. */ 466 public static final int UID_OBSERVER_GONE = 1<<1; 467 468 /** @hide Flag for registerUidObserver: report uid has become idle. */ 469 public static final int UID_OBSERVER_IDLE = 1<<2; 470 471 /** @hide Flag for registerUidObserver: report uid has become active. */ 472 public static final int UID_OBSERVER_ACTIVE = 1<<3; 473 474 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 475 public static final int APP_START_MODE_NORMAL = 0; 476 477 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 478 public static final int APP_START_MODE_DELAYED = 1; 479 480 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 481 * launches. */ 482 public static final int APP_START_MODE_DISABLED = 2; 483 484 /** 485 * Lock task mode is not active. 486 */ 487 public static final int LOCK_TASK_MODE_NONE = 0; 488 489 /** 490 * Full lock task mode is active. 491 */ 492 public static final int LOCK_TASK_MODE_LOCKED = 1; 493 494 /** 495 * App pinning mode is active. 496 */ 497 public static final int LOCK_TASK_MODE_PINNED = 2; 498 499 Point mAppTaskThumbnailSize; 500 501 /*package*/ ActivityManager(Context context, Handler handler) { 502 mContext = context; 503 mHandler = handler; 504 } 505 506 /** 507 * Screen compatibility mode: the application most always run in 508 * compatibility mode. 509 * @hide 510 */ 511 public static final int COMPAT_MODE_ALWAYS = -1; 512 513 /** 514 * Screen compatibility mode: the application can never run in 515 * compatibility mode. 516 * @hide 517 */ 518 public static final int COMPAT_MODE_NEVER = -2; 519 520 /** 521 * Screen compatibility mode: unknown. 522 * @hide 523 */ 524 public static final int COMPAT_MODE_UNKNOWN = -3; 525 526 /** 527 * Screen compatibility mode: the application currently has compatibility 528 * mode disabled. 529 * @hide 530 */ 531 public static final int COMPAT_MODE_DISABLED = 0; 532 533 /** 534 * Screen compatibility mode: the application currently has compatibility 535 * mode enabled. 536 * @hide 537 */ 538 public static final int COMPAT_MODE_ENABLED = 1; 539 540 /** 541 * Screen compatibility mode: request to toggle the application's 542 * compatibility mode. 543 * @hide 544 */ 545 public static final int COMPAT_MODE_TOGGLE = 2; 546 547 /** @hide */ 548 public static class StackId { 549 /** Invalid stack ID. */ 550 public static final int INVALID_STACK_ID = -1; 551 552 /** First static stack ID. */ 553 public static final int FIRST_STATIC_STACK_ID = 0; 554 555 /** Home activity stack ID. */ 556 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 557 558 /** ID of stack where fullscreen activities are normally launched into. */ 559 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 560 561 /** ID of stack where freeform/resized activities are normally launched into. */ 562 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 563 564 /** ID of stack that occupies a dedicated region of the screen. */ 565 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 566 567 /** ID of stack that always on top (always visible) when it exist. */ 568 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 569 570 /** Last static stack stack ID. */ 571 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 572 573 /** Start of ID range used by stacks that are created dynamically. */ 574 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 575 576 public static boolean isStaticStack(int stackId) { 577 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 578 } 579 580 /** 581 * Returns true if the activities contained in the input stack display a shadow around 582 * their border. 583 */ 584 public static boolean hasWindowShadow(int stackId) { 585 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 586 } 587 588 /** 589 * Returns true if the activities contained in the input stack display a decor view. 590 */ 591 public static boolean hasWindowDecor(int stackId) { 592 return stackId == FREEFORM_WORKSPACE_STACK_ID; 593 } 594 595 /** 596 * Returns true if the tasks contained in the stack can be resized independently of the 597 * stack. 598 */ 599 public static boolean isTaskResizeAllowed(int stackId) { 600 return stackId == FREEFORM_WORKSPACE_STACK_ID; 601 } 602 603 /** Returns true if the task bounds should persist across power cycles. */ 604 public static boolean persistTaskBounds(int stackId) { 605 return stackId == FREEFORM_WORKSPACE_STACK_ID; 606 } 607 608 /** 609 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 610 */ 611 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 612 return stackId == PINNED_STACK_ID; 613 } 614 615 /** 616 * Returns true if we try to maintain focus in the current stack when the top activity 617 * finishes. 618 */ 619 public static boolean keepFocusInStackIfPossible(int stackId) { 620 return stackId == FREEFORM_WORKSPACE_STACK_ID 621 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 622 } 623 624 /** 625 * Returns true if Stack size is affected by the docked stack changing size. 626 */ 627 public static boolean isResizeableByDockedStack(int stackId) { 628 return isStaticStack(stackId) && 629 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 630 } 631 632 /** 633 * Returns true if the size of tasks in the input stack are affected by the docked stack 634 * changing size. 635 */ 636 public static boolean isTaskResizeableByDockedStack(int stackId) { 637 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 638 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 639 } 640 641 /** 642 * Returns true if the windows of tasks being moved to the target stack from the source 643 * stack should be replaced, meaning that window manager will keep the old window around 644 * until the new is ready. 645 */ 646 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 647 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 648 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 649 } 650 651 /** 652 * Return whether a stackId is a stack containing floating windows. Floating windows 653 * are laid out differently as they are allowed to extend past the display bounds 654 * without overscan insets. 655 */ 656 public static boolean tasksAreFloating(int stackId) { 657 return stackId == FREEFORM_WORKSPACE_STACK_ID 658 || stackId == PINNED_STACK_ID; 659 } 660 661 /** 662 * Returns true if animation specs should be constructed for app transition that moves 663 * the task to the specified stack. 664 */ 665 public static boolean useAnimationSpecForAppTransition(int stackId) { 666 667 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 668 // reboots. 669 return stackId == FREEFORM_WORKSPACE_STACK_ID 670 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 671 || stackId == INVALID_STACK_ID; 672 } 673 674 /** Returns true if the windows in the stack can receive input keys. */ 675 public static boolean canReceiveKeys(int stackId) { 676 return stackId != PINNED_STACK_ID; 677 } 678 679 /** 680 * Returns true if the stack can be visible above lockscreen. 681 */ 682 public static boolean isAllowedOverLockscreen(int stackId) { 683 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 684 } 685 686 public static boolean isAlwaysOnTop(int stackId) { 687 return stackId == PINNED_STACK_ID; 688 } 689 690 /** 691 * Returns true if the top task in the task is allowed to return home when finished and 692 * there are other tasks in the stack. 693 */ 694 public static boolean allowTopTaskToReturnHome(int stackId) { 695 return stackId != PINNED_STACK_ID; 696 } 697 698 /** 699 * Returns true if the stack should be resized to match the bounds specified by 700 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 701 */ 702 public static boolean resizeStackWithLaunchBounds(int stackId) { 703 return stackId == PINNED_STACK_ID; 704 } 705 706 /** 707 * Returns true if any visible windows belonging to apps in this stack should be kept on 708 * screen when the app is killed due to something like the low memory killer. 709 */ 710 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 711 return stackId != PINNED_STACK_ID; 712 } 713 714 /** 715 * Returns true if the backdrop on the client side should match the frame of the window. 716 * Returns false, if the backdrop should be fullscreen. 717 */ 718 public static boolean useWindowFrameForBackdrop(int stackId) { 719 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 720 } 721 722 /** 723 * Returns true if a window from the specified stack with {@param stackId} are normally 724 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 725 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 726 * etc. 727 */ 728 public static boolean normallyFullscreenWindows(int stackId) { 729 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 730 && stackId != DOCKED_STACK_ID; 731 } 732 733 /** 734 * Returns true if the input stack id should only be present on a device that supports 735 * multi-window mode. 736 * @see android.app.ActivityManager#supportsMultiWindow 737 */ 738 public static boolean isMultiWindowStack(int stackId) { 739 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 740 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 741 } 742 743 /** 744 * Returns true if activities contained in this stack can request visible behind by 745 * calling {@link Activity#requestVisibleBehind}. 746 */ 747 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 748 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 749 } 750 751 /** 752 * Returns true if this stack may be scaled without resizing, 753 * and windows within may need to be configured as such. 754 */ 755 public static boolean windowsAreScaleable(int stackId) { 756 return stackId == PINNED_STACK_ID; 757 } 758 759 /** 760 * Returns true if windows in this stack should be given move animations 761 * by default. 762 */ 763 public static boolean hasMovementAnimations(int stackId) { 764 return stackId != PINNED_STACK_ID; 765 } 766 767 /** Returns true if the input stack and its content can affect the device orientation. */ 768 public static boolean canSpecifyOrientation(int stackId) { 769 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 770 } 771 } 772 773 /** 774 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 775 * specifies the position of the created docked stack at the top half of the screen if 776 * in portrait mode or at the left half of the screen if in landscape mode. 777 * @hide 778 */ 779 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 780 781 /** 782 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 783 * specifies the position of the created docked stack at the bottom half of the screen if 784 * in portrait mode or at the right half of the screen if in landscape mode. 785 * @hide 786 */ 787 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 788 789 /** 790 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 791 * that the resize doesn't need to preserve the window, and can be skipped if bounds 792 * is unchanged. This mode is used by window manager in most cases. 793 * @hide 794 */ 795 public static final int RESIZE_MODE_SYSTEM = 0; 796 797 /** 798 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 799 * that the resize should preserve the window if possible. 800 * @hide 801 */ 802 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 803 804 /** 805 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 806 * that the resize should be performed even if the bounds appears unchanged. 807 * @hide 808 */ 809 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 810 811 /** 812 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 813 * manager during a screen rotation. 814 * @hide 815 */ 816 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 817 818 /** 819 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 820 * resize is due to a drag action. 821 * @hide 822 */ 823 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 824 825 /** 826 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 827 * that the resize should preserve the window if possible, and should not be skipped 828 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 829 * is ending. 830 * @hide 831 */ 832 public static final int RESIZE_MODE_USER_FORCED = 833 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 834 835 /** @hide */ 836 public int getFrontActivityScreenCompatMode() { 837 try { 838 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 839 } catch (RemoteException e) { 840 throw e.rethrowFromSystemServer(); 841 } 842 } 843 844 /** @hide */ 845 public void setFrontActivityScreenCompatMode(int mode) { 846 try { 847 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 848 } catch (RemoteException e) { 849 throw e.rethrowFromSystemServer(); 850 } 851 } 852 853 /** @hide */ 854 public int getPackageScreenCompatMode(String packageName) { 855 try { 856 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 857 } catch (RemoteException e) { 858 throw e.rethrowFromSystemServer(); 859 } 860 } 861 862 /** @hide */ 863 public void setPackageScreenCompatMode(String packageName, int mode) { 864 try { 865 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 866 } catch (RemoteException e) { 867 throw e.rethrowFromSystemServer(); 868 } 869 } 870 871 /** @hide */ 872 public boolean getPackageAskScreenCompat(String packageName) { 873 try { 874 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 875 } catch (RemoteException e) { 876 throw e.rethrowFromSystemServer(); 877 } 878 } 879 880 /** @hide */ 881 public void setPackageAskScreenCompat(String packageName, boolean ask) { 882 try { 883 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 884 } catch (RemoteException e) { 885 throw e.rethrowFromSystemServer(); 886 } 887 } 888 889 /** 890 * Return the approximate per-application memory class of the current 891 * device. This gives you an idea of how hard a memory limit you should 892 * impose on your application to let the overall system work best. The 893 * returned value is in megabytes; the baseline Android memory class is 894 * 16 (which happens to be the Java heap limit of those devices); some 895 * device with more memory may return 24 or even higher numbers. 896 */ 897 public int getMemoryClass() { 898 return staticGetMemoryClass(); 899 } 900 901 /** @hide */ 902 static public int staticGetMemoryClass() { 903 // Really brain dead right now -- just take this from the configured 904 // vm heap size, and assume it is in megabytes and thus ends with "m". 905 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 906 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 907 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 908 } 909 return staticGetLargeMemoryClass(); 910 } 911 912 /** 913 * Return the approximate per-application memory class of the current 914 * device when an application is running with a large heap. This is the 915 * space available for memory-intensive applications; most applications 916 * should not need this amount of memory, and should instead stay with the 917 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 918 * This may be the same size as {@link #getMemoryClass()} on memory 919 * constrained devices, or it may be significantly larger on devices with 920 * a large amount of available RAM. 921 * 922 * <p>The is the size of the application's Dalvik heap if it has 923 * specified <code>android:largeHeap="true"</code> in its manifest. 924 */ 925 public int getLargeMemoryClass() { 926 return staticGetLargeMemoryClass(); 927 } 928 929 /** @hide */ 930 static public int staticGetLargeMemoryClass() { 931 // Really brain dead right now -- just take this from the configured 932 // vm heap size, and assume it is in megabytes and thus ends with "m". 933 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 934 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 935 } 936 937 /** 938 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 939 * is ultimately up to the device configuration, but currently it generally means 940 * something in the class of a 512MB device with about a 800x480 or less screen. 941 * This is mostly intended to be used by apps to determine whether they should turn 942 * off certain features that require more RAM. 943 */ 944 public boolean isLowRamDevice() { 945 return isLowRamDeviceStatic(); 946 } 947 948 /** @hide */ 949 public static boolean isLowRamDeviceStatic() { 950 return RoSystemProperties.CONFIG_LOW_RAM; 951 } 952 953 /** 954 * Used by persistent processes to determine if they are running on a 955 * higher-end device so should be okay using hardware drawing acceleration 956 * (which tends to consume a lot more RAM). 957 * @hide 958 */ 959 static public boolean isHighEndGfx() { 960 return !isLowRamDeviceStatic() && 961 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 962 } 963 964 /** 965 * Return the maximum number of recents entries that we will maintain and show. 966 * @hide 967 */ 968 static public int getMaxRecentTasksStatic() { 969 if (gMaxRecentTasks < 0) { 970 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 971 } 972 return gMaxRecentTasks; 973 } 974 975 /** 976 * Return the default limit on the number of recents that an app can make. 977 * @hide 978 */ 979 static public int getDefaultAppRecentsLimitStatic() { 980 return getMaxRecentTasksStatic() / 6; 981 } 982 983 /** 984 * Return the maximum limit on the number of recents that an app can make. 985 * @hide 986 */ 987 static public int getMaxAppRecentsLimitStatic() { 988 return getMaxRecentTasksStatic() / 2; 989 } 990 991 /** 992 * Returns true if the system supports at least one form of multi-window. 993 * E.g. freeform, split-screen, picture-in-picture. 994 * @hide 995 */ 996 static public boolean supportsMultiWindow() { 997 return !isLowRamDeviceStatic() 998 && Resources.getSystem().getBoolean( 999 com.android.internal.R.bool.config_supportsMultiWindow); 1000 } 1001 1002 /** 1003 * Information you can set and retrieve about the current activity within the recent task list. 1004 */ 1005 public static class TaskDescription implements Parcelable { 1006 /** @hide */ 1007 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1008 private static final String ATTR_TASKDESCRIPTIONLABEL = 1009 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1010 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1011 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1012 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1013 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1014 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1015 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1016 1017 private String mLabel; 1018 private Bitmap mIcon; 1019 private String mIconFilename; 1020 private int mColorPrimary; 1021 private int mColorBackground; 1022 1023 /** 1024 * Creates the TaskDescription to the specified values. 1025 * 1026 * @param label A label and description of the current state of this task. 1027 * @param icon An icon that represents the current state of this task. 1028 * @param colorPrimary A color to override the theme's primary color. This color must be 1029 * opaque. 1030 */ 1031 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1032 this(label, icon, null, colorPrimary, 0); 1033 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1034 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1035 } 1036 } 1037 1038 /** 1039 * Creates the TaskDescription to the specified values. 1040 * 1041 * @param label A label and description of the current state of this activity. 1042 * @param icon An icon that represents the current state of this activity. 1043 */ 1044 public TaskDescription(String label, Bitmap icon) { 1045 this(label, icon, null, 0, 0); 1046 } 1047 1048 /** 1049 * Creates the TaskDescription to the specified values. 1050 * 1051 * @param label A label and description of the current state of this activity. 1052 */ 1053 public TaskDescription(String label) { 1054 this(label, null, null, 0, 0); 1055 } 1056 1057 /** 1058 * Creates an empty TaskDescription. 1059 */ 1060 public TaskDescription() { 1061 this(null, null, null, 0, 0); 1062 } 1063 1064 /** @hide */ 1065 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1066 int colorBackground) { 1067 mLabel = label; 1068 mIcon = icon; 1069 mIconFilename = iconFilename; 1070 mColorPrimary = colorPrimary; 1071 mColorBackground = colorBackground; 1072 } 1073 1074 /** 1075 * Creates a copy of another TaskDescription. 1076 */ 1077 public TaskDescription(TaskDescription td) { 1078 copyFrom(td); 1079 } 1080 1081 /** 1082 * Copies this the values from another TaskDescription. 1083 * @hide 1084 */ 1085 public void copyFrom(TaskDescription other) { 1086 mLabel = other.mLabel; 1087 mIcon = other.mIcon; 1088 mIconFilename = other.mIconFilename; 1089 mColorPrimary = other.mColorPrimary; 1090 mColorBackground = other.mColorBackground; 1091 } 1092 1093 private TaskDescription(Parcel source) { 1094 readFromParcel(source); 1095 } 1096 1097 /** 1098 * Sets the label for this task description. 1099 * @hide 1100 */ 1101 public void setLabel(String label) { 1102 mLabel = label; 1103 } 1104 1105 /** 1106 * Sets the primary color for this task description. 1107 * @hide 1108 */ 1109 public void setPrimaryColor(int primaryColor) { 1110 // Ensure that the given color is valid 1111 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1112 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1113 } 1114 mColorPrimary = primaryColor; 1115 } 1116 1117 /** 1118 * Sets the background color for this task description. 1119 * @hide 1120 */ 1121 public void setBackgroundColor(int backgroundColor) { 1122 // Ensure that the given color is valid 1123 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1124 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1125 } 1126 mColorBackground = backgroundColor; 1127 } 1128 1129 /** 1130 * Sets the icon for this task description. 1131 * @hide 1132 */ 1133 public void setIcon(Bitmap icon) { 1134 mIcon = icon; 1135 } 1136 1137 /** 1138 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1139 * bitmap. 1140 * @hide 1141 */ 1142 public void setIconFilename(String iconFilename) { 1143 mIconFilename = iconFilename; 1144 mIcon = null; 1145 } 1146 1147 /** 1148 * @return The label and description of the current state of this task. 1149 */ 1150 public String getLabel() { 1151 return mLabel; 1152 } 1153 1154 /** 1155 * @return The icon that represents the current state of this task. 1156 */ 1157 public Bitmap getIcon() { 1158 if (mIcon != null) { 1159 return mIcon; 1160 } 1161 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1162 } 1163 1164 /** @hide */ 1165 public String getIconFilename() { 1166 return mIconFilename; 1167 } 1168 1169 /** @hide */ 1170 public Bitmap getInMemoryIcon() { 1171 return mIcon; 1172 } 1173 1174 /** @hide */ 1175 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1176 if (iconFilename != null) { 1177 try { 1178 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1179 userId); 1180 } catch (RemoteException e) { 1181 throw e.rethrowFromSystemServer(); 1182 } 1183 } 1184 return null; 1185 } 1186 1187 /** 1188 * @return The color override on the theme's primary color. 1189 */ 1190 public int getPrimaryColor() { 1191 return mColorPrimary; 1192 } 1193 1194 /** 1195 * @return The background color. 1196 * @hide 1197 */ 1198 public int getBackgroundColor() { 1199 return mColorBackground; 1200 } 1201 1202 /** @hide */ 1203 public void saveToXml(XmlSerializer out) throws IOException { 1204 if (mLabel != null) { 1205 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1206 } 1207 if (mColorPrimary != 0) { 1208 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1209 Integer.toHexString(mColorPrimary)); 1210 } 1211 if (mColorBackground != 0) { 1212 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1213 Integer.toHexString(mColorBackground)); 1214 } 1215 if (mIconFilename != null) { 1216 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1217 } 1218 } 1219 1220 /** @hide */ 1221 public void restoreFromXml(String attrName, String attrValue) { 1222 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1223 setLabel(attrValue); 1224 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1225 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1226 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1227 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1228 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1229 setIconFilename(attrValue); 1230 } 1231 } 1232 1233 @Override 1234 public int describeContents() { 1235 return 0; 1236 } 1237 1238 @Override 1239 public void writeToParcel(Parcel dest, int flags) { 1240 if (mLabel == null) { 1241 dest.writeInt(0); 1242 } else { 1243 dest.writeInt(1); 1244 dest.writeString(mLabel); 1245 } 1246 if (mIcon == null) { 1247 dest.writeInt(0); 1248 } else { 1249 dest.writeInt(1); 1250 mIcon.writeToParcel(dest, 0); 1251 } 1252 dest.writeInt(mColorPrimary); 1253 dest.writeInt(mColorBackground); 1254 if (mIconFilename == null) { 1255 dest.writeInt(0); 1256 } else { 1257 dest.writeInt(1); 1258 dest.writeString(mIconFilename); 1259 } 1260 } 1261 1262 public void readFromParcel(Parcel source) { 1263 mLabel = source.readInt() > 0 ? source.readString() : null; 1264 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1265 mColorPrimary = source.readInt(); 1266 mColorBackground = source.readInt(); 1267 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1268 } 1269 1270 public static final Creator<TaskDescription> CREATOR 1271 = new Creator<TaskDescription>() { 1272 public TaskDescription createFromParcel(Parcel source) { 1273 return new TaskDescription(source); 1274 } 1275 public TaskDescription[] newArray(int size) { 1276 return new TaskDescription[size]; 1277 } 1278 }; 1279 1280 @Override 1281 public String toString() { 1282 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1283 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1284 " colorBackground: " + mColorBackground; 1285 } 1286 } 1287 1288 /** 1289 * Information you can retrieve about tasks that the user has most recently 1290 * started or visited. 1291 */ 1292 public static class RecentTaskInfo implements Parcelable { 1293 /** 1294 * If this task is currently running, this is the identifier for it. 1295 * If it is not running, this will be -1. 1296 */ 1297 public int id; 1298 1299 /** 1300 * The true identifier of this task, valid even if it is not running. 1301 */ 1302 public int persistentId; 1303 1304 /** 1305 * The original Intent used to launch the task. You can use this 1306 * Intent to re-launch the task (if it is no longer running) or bring 1307 * the current task to the front. 1308 */ 1309 public Intent baseIntent; 1310 1311 /** 1312 * If this task was started from an alias, this is the actual 1313 * activity component that was initially started; the component of 1314 * the baseIntent in this case is the name of the actual activity 1315 * implementation that the alias referred to. Otherwise, this is null. 1316 */ 1317 public ComponentName origActivity; 1318 1319 /** 1320 * The actual activity component that started the task. 1321 * @hide 1322 */ 1323 @Nullable 1324 public ComponentName realActivity; 1325 1326 /** 1327 * Description of the task's last state. 1328 */ 1329 public CharSequence description; 1330 1331 /** 1332 * The id of the ActivityStack this Task was on most recently. 1333 * @hide 1334 */ 1335 public int stackId; 1336 1337 /** 1338 * The id of the user the task was running as. 1339 * @hide 1340 */ 1341 public int userId; 1342 1343 /** 1344 * The first time this task was active. 1345 * @hide 1346 */ 1347 public long firstActiveTime; 1348 1349 /** 1350 * The last time this task was active. 1351 * @hide 1352 */ 1353 public long lastActiveTime; 1354 1355 /** 1356 * The recent activity values for the highest activity in the stack to have set the values. 1357 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1358 */ 1359 public TaskDescription taskDescription; 1360 1361 /** 1362 * Task affiliation for grouping with other tasks. 1363 */ 1364 public int affiliatedTaskId; 1365 1366 /** 1367 * Task affiliation color of the source task with the affiliated task id. 1368 * 1369 * @hide 1370 */ 1371 public int affiliatedTaskColor; 1372 1373 /** 1374 * The component launched as the first activity in the task. 1375 * This can be considered the "application" of this task. 1376 */ 1377 public ComponentName baseActivity; 1378 1379 /** 1380 * The activity component at the top of the history stack of the task. 1381 * This is what the user is currently doing. 1382 */ 1383 public ComponentName topActivity; 1384 1385 /** 1386 * Number of activities in this task. 1387 */ 1388 public int numActivities; 1389 1390 /** 1391 * The bounds of the task. 1392 * @hide 1393 */ 1394 public Rect bounds; 1395 1396 /** 1397 * True if the task can go in the docked stack. 1398 * @hide 1399 */ 1400 public boolean isDockable; 1401 1402 /** 1403 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1404 * @hide 1405 */ 1406 public int resizeMode; 1407 1408 public RecentTaskInfo() { 1409 } 1410 1411 @Override 1412 public int describeContents() { 1413 return 0; 1414 } 1415 1416 @Override 1417 public void writeToParcel(Parcel dest, int flags) { 1418 dest.writeInt(id); 1419 dest.writeInt(persistentId); 1420 if (baseIntent != null) { 1421 dest.writeInt(1); 1422 baseIntent.writeToParcel(dest, 0); 1423 } else { 1424 dest.writeInt(0); 1425 } 1426 ComponentName.writeToParcel(origActivity, dest); 1427 ComponentName.writeToParcel(realActivity, dest); 1428 TextUtils.writeToParcel(description, dest, 1429 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1430 if (taskDescription != null) { 1431 dest.writeInt(1); 1432 taskDescription.writeToParcel(dest, 0); 1433 } else { 1434 dest.writeInt(0); 1435 } 1436 dest.writeInt(stackId); 1437 dest.writeInt(userId); 1438 dest.writeLong(firstActiveTime); 1439 dest.writeLong(lastActiveTime); 1440 dest.writeInt(affiliatedTaskId); 1441 dest.writeInt(affiliatedTaskColor); 1442 ComponentName.writeToParcel(baseActivity, dest); 1443 ComponentName.writeToParcel(topActivity, dest); 1444 dest.writeInt(numActivities); 1445 if (bounds != null) { 1446 dest.writeInt(1); 1447 bounds.writeToParcel(dest, 0); 1448 } else { 1449 dest.writeInt(0); 1450 } 1451 dest.writeInt(isDockable ? 1 : 0); 1452 dest.writeInt(resizeMode); 1453 } 1454 1455 public void readFromParcel(Parcel source) { 1456 id = source.readInt(); 1457 persistentId = source.readInt(); 1458 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1459 origActivity = ComponentName.readFromParcel(source); 1460 realActivity = ComponentName.readFromParcel(source); 1461 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1462 taskDescription = source.readInt() > 0 ? 1463 TaskDescription.CREATOR.createFromParcel(source) : null; 1464 stackId = source.readInt(); 1465 userId = source.readInt(); 1466 firstActiveTime = source.readLong(); 1467 lastActiveTime = source.readLong(); 1468 affiliatedTaskId = source.readInt(); 1469 affiliatedTaskColor = source.readInt(); 1470 baseActivity = ComponentName.readFromParcel(source); 1471 topActivity = ComponentName.readFromParcel(source); 1472 numActivities = source.readInt(); 1473 bounds = source.readInt() > 0 ? 1474 Rect.CREATOR.createFromParcel(source) : null; 1475 isDockable = source.readInt() == 1; 1476 resizeMode = source.readInt(); 1477 } 1478 1479 public static final Creator<RecentTaskInfo> CREATOR 1480 = new Creator<RecentTaskInfo>() { 1481 public RecentTaskInfo createFromParcel(Parcel source) { 1482 return new RecentTaskInfo(source); 1483 } 1484 public RecentTaskInfo[] newArray(int size) { 1485 return new RecentTaskInfo[size]; 1486 } 1487 }; 1488 1489 private RecentTaskInfo(Parcel source) { 1490 readFromParcel(source); 1491 } 1492 } 1493 1494 /** 1495 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1496 * that have set their 1497 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1498 */ 1499 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1500 1501 /** 1502 * Provides a list that does not contain any 1503 * recent tasks that currently are not available to the user. 1504 */ 1505 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1506 1507 /** 1508 * Provides a list that contains recent tasks for all 1509 * profiles of a user. 1510 * @hide 1511 */ 1512 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1513 1514 /** 1515 * Ignores all tasks that are on the home stack. 1516 * @hide 1517 */ 1518 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1519 1520 /** 1521 * Ignores the top task in the docked stack. 1522 * @hide 1523 */ 1524 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1525 1526 /** 1527 * Ignores all tasks that are on the pinned stack. 1528 * @hide 1529 */ 1530 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1531 1532 /** 1533 * <p></p>Return a list of the tasks that the user has recently launched, with 1534 * the most recent being first and older ones after in order. 1535 * 1536 * <p><b>Note: this method is only intended for debugging and presenting 1537 * task management user interfaces</b>. This should never be used for 1538 * core logic in an application, such as deciding between different 1539 * behaviors based on the information found here. Such uses are 1540 * <em>not</em> supported, and will likely break in the future. For 1541 * example, if multiple applications can be actively running at the 1542 * same time, assumptions made about the meaning of the data here for 1543 * purposes of control flow will be incorrect.</p> 1544 * 1545 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1546 * no longer available to third party applications: the introduction of 1547 * document-centric recents means 1548 * it can leak personal information to the caller. For backwards compatibility, 1549 * it will still return a small subset of its data: at least the caller's 1550 * own tasks (though see {@link #getAppTasks()} for the correct supported 1551 * way to retrieve that information), and possibly some other tasks 1552 * such as home that are known to not be sensitive. 1553 * 1554 * @param maxNum The maximum number of entries to return in the list. The 1555 * actual number returned may be smaller, depending on how many tasks the 1556 * user has started and the maximum number the system can remember. 1557 * @param flags Information about what to return. May be any combination 1558 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1559 * 1560 * @return Returns a list of RecentTaskInfo records describing each of 1561 * the recent tasks. 1562 */ 1563 @Deprecated 1564 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1565 throws SecurityException { 1566 try { 1567 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1568 flags, UserHandle.myUserId()).getList(); 1569 } catch (RemoteException e) { 1570 throw e.rethrowFromSystemServer(); 1571 } 1572 } 1573 1574 /** 1575 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1576 * specific user. It requires holding 1577 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1578 * @param maxNum The maximum number of entries to return in the list. The 1579 * actual number returned may be smaller, depending on how many tasks the 1580 * user has started and the maximum number the system can remember. 1581 * @param flags Information about what to return. May be any combination 1582 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1583 * 1584 * @return Returns a list of RecentTaskInfo records describing each of 1585 * the recent tasks. Most recently activated tasks go first. 1586 * 1587 * @hide 1588 */ 1589 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1590 throws SecurityException { 1591 try { 1592 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1593 flags, userId).getList(); 1594 } catch (RemoteException e) { 1595 throw e.rethrowFromSystemServer(); 1596 } 1597 } 1598 1599 /** 1600 * Information you can retrieve about a particular task that is currently 1601 * "running" in the system. Note that a running task does not mean the 1602 * given task actually has a process it is actively running in; it simply 1603 * means that the user has gone to it and never closed it, but currently 1604 * the system may have killed its process and is only holding on to its 1605 * last state in order to restart it when the user returns. 1606 */ 1607 public static class RunningTaskInfo implements Parcelable { 1608 /** 1609 * A unique identifier for this task. 1610 */ 1611 public int id; 1612 1613 /** 1614 * The stack that currently contains this task. 1615 * @hide 1616 */ 1617 public int stackId; 1618 1619 /** 1620 * The component launched as the first activity in the task. This can 1621 * be considered the "application" of this task. 1622 */ 1623 public ComponentName baseActivity; 1624 1625 /** 1626 * The activity component at the top of the history stack of the task. 1627 * This is what the user is currently doing. 1628 */ 1629 public ComponentName topActivity; 1630 1631 /** 1632 * Thumbnail representation of the task's current state. Currently 1633 * always null. 1634 */ 1635 public Bitmap thumbnail; 1636 1637 /** 1638 * Description of the task's current state. 1639 */ 1640 public CharSequence description; 1641 1642 /** 1643 * Number of activities in this task. 1644 */ 1645 public int numActivities; 1646 1647 /** 1648 * Number of activities that are currently running (not stopped 1649 * and persisted) in this task. 1650 */ 1651 public int numRunning; 1652 1653 /** 1654 * Last time task was run. For sorting. 1655 * @hide 1656 */ 1657 public long lastActiveTime; 1658 1659 /** 1660 * True if the task can go in the docked stack. 1661 * @hide 1662 */ 1663 public boolean isDockable; 1664 1665 /** 1666 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1667 * @hide 1668 */ 1669 public int resizeMode; 1670 1671 public RunningTaskInfo() { 1672 } 1673 1674 public int describeContents() { 1675 return 0; 1676 } 1677 1678 public void writeToParcel(Parcel dest, int flags) { 1679 dest.writeInt(id); 1680 dest.writeInt(stackId); 1681 ComponentName.writeToParcel(baseActivity, dest); 1682 ComponentName.writeToParcel(topActivity, dest); 1683 if (thumbnail != null) { 1684 dest.writeInt(1); 1685 thumbnail.writeToParcel(dest, 0); 1686 } else { 1687 dest.writeInt(0); 1688 } 1689 TextUtils.writeToParcel(description, dest, 1690 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1691 dest.writeInt(numActivities); 1692 dest.writeInt(numRunning); 1693 dest.writeInt(isDockable ? 1 : 0); 1694 dest.writeInt(resizeMode); 1695 } 1696 1697 public void readFromParcel(Parcel source) { 1698 id = source.readInt(); 1699 stackId = source.readInt(); 1700 baseActivity = ComponentName.readFromParcel(source); 1701 topActivity = ComponentName.readFromParcel(source); 1702 if (source.readInt() != 0) { 1703 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1704 } else { 1705 thumbnail = null; 1706 } 1707 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1708 numActivities = source.readInt(); 1709 numRunning = source.readInt(); 1710 isDockable = source.readInt() != 0; 1711 resizeMode = source.readInt(); 1712 } 1713 1714 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1715 public RunningTaskInfo createFromParcel(Parcel source) { 1716 return new RunningTaskInfo(source); 1717 } 1718 public RunningTaskInfo[] newArray(int size) { 1719 return new RunningTaskInfo[size]; 1720 } 1721 }; 1722 1723 private RunningTaskInfo(Parcel source) { 1724 readFromParcel(source); 1725 } 1726 } 1727 1728 /** 1729 * Get the list of tasks associated with the calling application. 1730 * 1731 * @return The list of tasks associated with the application making this call. 1732 * @throws SecurityException 1733 */ 1734 public List<ActivityManager.AppTask> getAppTasks() { 1735 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1736 List<IBinder> appTasks; 1737 try { 1738 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1739 } catch (RemoteException e) { 1740 throw e.rethrowFromSystemServer(); 1741 } 1742 int numAppTasks = appTasks.size(); 1743 for (int i = 0; i < numAppTasks; i++) { 1744 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1745 } 1746 return tasks; 1747 } 1748 1749 /** 1750 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1751 * with {@link #addAppTask}. 1752 */ 1753 public Size getAppTaskThumbnailSize() { 1754 synchronized (this) { 1755 ensureAppTaskThumbnailSizeLocked(); 1756 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1757 } 1758 } 1759 1760 private void ensureAppTaskThumbnailSizeLocked() { 1761 if (mAppTaskThumbnailSize == null) { 1762 try { 1763 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1764 } catch (RemoteException e) { 1765 throw e.rethrowFromSystemServer(); 1766 } 1767 } 1768 } 1769 1770 /** 1771 * Add a new {@link AppTask} for the calling application. This will create a new 1772 * recents entry that is added to the <b>end</b> of all existing recents. 1773 * 1774 * @param activity The activity that is adding the entry. This is used to help determine 1775 * the context that the new recents entry will be in. 1776 * @param intent The Intent that describes the recents entry. This is the same Intent that 1777 * you would have used to launch the activity for it. In generally you will want to set 1778 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1779 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1780 * entry will exist without an activity, so it doesn't make sense to not retain it when 1781 * its activity disappears. The given Intent here also must have an explicit ComponentName 1782 * set on it. 1783 * @param description Optional additional description information. 1784 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1785 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1786 * recreated in your process, probably in a way you don't like, before the recents entry 1787 * is added. 1788 * 1789 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1790 * most likely cause of failure is that there is no more room for more tasks for your app. 1791 */ 1792 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1793 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1794 Point size; 1795 synchronized (this) { 1796 ensureAppTaskThumbnailSizeLocked(); 1797 size = mAppTaskThumbnailSize; 1798 } 1799 final int tw = thumbnail.getWidth(); 1800 final int th = thumbnail.getHeight(); 1801 if (tw != size.x || th != size.y) { 1802 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1803 1804 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1805 float scale; 1806 float dx = 0, dy = 0; 1807 if (tw * size.x > size.y * th) { 1808 scale = (float) size.x / (float) th; 1809 dx = (size.y - tw * scale) * 0.5f; 1810 } else { 1811 scale = (float) size.y / (float) tw; 1812 dy = (size.x - th * scale) * 0.5f; 1813 } 1814 Matrix matrix = new Matrix(); 1815 matrix.setScale(scale, scale); 1816 matrix.postTranslate((int) (dx + 0.5f), 0); 1817 1818 Canvas canvas = new Canvas(bm); 1819 canvas.drawBitmap(thumbnail, matrix, null); 1820 canvas.setBitmap(null); 1821 1822 thumbnail = bm; 1823 } 1824 if (description == null) { 1825 description = new TaskDescription(); 1826 } 1827 try { 1828 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1829 intent, description, thumbnail); 1830 } catch (RemoteException e) { 1831 throw e.rethrowFromSystemServer(); 1832 } 1833 } 1834 1835 /** 1836 * Return a list of the tasks that are currently running, with 1837 * the most recent being first and older ones after in order. Note that 1838 * "running" does not mean any of the task's code is currently loaded or 1839 * activity -- the task may have been frozen by the system, so that it 1840 * can be restarted in its previous state when next brought to the 1841 * foreground. 1842 * 1843 * <p><b>Note: this method is only intended for debugging and presenting 1844 * task management user interfaces</b>. This should never be used for 1845 * core logic in an application, such as deciding between different 1846 * behaviors based on the information found here. Such uses are 1847 * <em>not</em> supported, and will likely break in the future. For 1848 * example, if multiple applications can be actively running at the 1849 * same time, assumptions made about the meaning of the data here for 1850 * purposes of control flow will be incorrect.</p> 1851 * 1852 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1853 * is no longer available to third party 1854 * applications: the introduction of document-centric recents means 1855 * it can leak person information to the caller. For backwards compatibility, 1856 * it will still retu rn a small subset of its data: at least the caller's 1857 * own tasks, and possibly some other tasks 1858 * such as home that are known to not be sensitive. 1859 * 1860 * @param maxNum The maximum number of entries to return in the list. The 1861 * actual number returned may be smaller, depending on how many tasks the 1862 * user has started. 1863 * 1864 * @return Returns a list of RunningTaskInfo records describing each of 1865 * the running tasks. 1866 */ 1867 @Deprecated 1868 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1869 throws SecurityException { 1870 try { 1871 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1872 } catch (RemoteException e) { 1873 throw e.rethrowFromSystemServer(); 1874 } 1875 } 1876 1877 /** 1878 * Completely remove the given task. 1879 * 1880 * @param taskId Identifier of the task to be removed. 1881 * @return Returns true if the given task was found and removed. 1882 * 1883 * @hide 1884 */ 1885 public boolean removeTask(int taskId) throws SecurityException { 1886 try { 1887 return ActivityManagerNative.getDefault().removeTask(taskId); 1888 } catch (RemoteException e) { 1889 throw e.rethrowFromSystemServer(); 1890 } 1891 } 1892 1893 /** 1894 * Metadata related to the {@link TaskThumbnail}. 1895 * 1896 * @hide 1897 */ 1898 public static class TaskThumbnailInfo implements Parcelable { 1899 /** @hide */ 1900 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1901 private static final String ATTR_TASK_WIDTH = 1902 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1903 private static final String ATTR_TASK_HEIGHT = 1904 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1905 private static final String ATTR_SCREEN_ORIENTATION = 1906 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1907 1908 public int taskWidth; 1909 public int taskHeight; 1910 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1911 1912 public TaskThumbnailInfo() { 1913 // Do nothing 1914 } 1915 1916 private TaskThumbnailInfo(Parcel source) { 1917 readFromParcel(source); 1918 } 1919 1920 /** 1921 * Resets this info state to the initial state. 1922 * @hide 1923 */ 1924 public void reset() { 1925 taskWidth = 0; 1926 taskHeight = 0; 1927 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1928 } 1929 1930 /** 1931 * Copies from another ThumbnailInfo. 1932 */ 1933 public void copyFrom(TaskThumbnailInfo o) { 1934 taskWidth = o.taskWidth; 1935 taskHeight = o.taskHeight; 1936 screenOrientation = o.screenOrientation; 1937 } 1938 1939 /** @hide */ 1940 public void saveToXml(XmlSerializer out) throws IOException { 1941 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1942 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1943 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1944 } 1945 1946 /** @hide */ 1947 public void restoreFromXml(String attrName, String attrValue) { 1948 if (ATTR_TASK_WIDTH.equals(attrName)) { 1949 taskWidth = Integer.parseInt(attrValue); 1950 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1951 taskHeight = Integer.parseInt(attrValue); 1952 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1953 screenOrientation = Integer.parseInt(attrValue); 1954 } 1955 } 1956 1957 public int describeContents() { 1958 return 0; 1959 } 1960 1961 public void writeToParcel(Parcel dest, int flags) { 1962 dest.writeInt(taskWidth); 1963 dest.writeInt(taskHeight); 1964 dest.writeInt(screenOrientation); 1965 } 1966 1967 public void readFromParcel(Parcel source) { 1968 taskWidth = source.readInt(); 1969 taskHeight = source.readInt(); 1970 screenOrientation = source.readInt(); 1971 } 1972 1973 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1974 public TaskThumbnailInfo createFromParcel(Parcel source) { 1975 return new TaskThumbnailInfo(source); 1976 } 1977 public TaskThumbnailInfo[] newArray(int size) { 1978 return new TaskThumbnailInfo[size]; 1979 } 1980 }; 1981 } 1982 1983 /** @hide */ 1984 public static class TaskThumbnail implements Parcelable { 1985 public Bitmap mainThumbnail; 1986 public ParcelFileDescriptor thumbnailFileDescriptor; 1987 public TaskThumbnailInfo thumbnailInfo; 1988 1989 public TaskThumbnail() { 1990 } 1991 1992 private TaskThumbnail(Parcel source) { 1993 readFromParcel(source); 1994 } 1995 1996 public int describeContents() { 1997 if (thumbnailFileDescriptor != null) { 1998 return thumbnailFileDescriptor.describeContents(); 1999 } 2000 return 0; 2001 } 2002 2003 public void writeToParcel(Parcel dest, int flags) { 2004 if (mainThumbnail != null) { 2005 dest.writeInt(1); 2006 mainThumbnail.writeToParcel(dest, flags); 2007 } else { 2008 dest.writeInt(0); 2009 } 2010 if (thumbnailFileDescriptor != null) { 2011 dest.writeInt(1); 2012 thumbnailFileDescriptor.writeToParcel(dest, flags); 2013 } else { 2014 dest.writeInt(0); 2015 } 2016 if (thumbnailInfo != null) { 2017 dest.writeInt(1); 2018 thumbnailInfo.writeToParcel(dest, flags); 2019 } else { 2020 dest.writeInt(0); 2021 } 2022 } 2023 2024 public void readFromParcel(Parcel source) { 2025 if (source.readInt() != 0) { 2026 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2027 } else { 2028 mainThumbnail = null; 2029 } 2030 if (source.readInt() != 0) { 2031 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2032 } else { 2033 thumbnailFileDescriptor = null; 2034 } 2035 if (source.readInt() != 0) { 2036 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2037 } else { 2038 thumbnailInfo = null; 2039 } 2040 } 2041 2042 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2043 public TaskThumbnail createFromParcel(Parcel source) { 2044 return new TaskThumbnail(source); 2045 } 2046 public TaskThumbnail[] newArray(int size) { 2047 return new TaskThumbnail[size]; 2048 } 2049 }; 2050 } 2051 2052 /** @hide */ 2053 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2054 try { 2055 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 2056 } catch (RemoteException e) { 2057 throw e.rethrowFromSystemServer(); 2058 } 2059 } 2060 2061 /** @hide */ 2062 public boolean isInHomeStack(int taskId) { 2063 try { 2064 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 2065 } catch (RemoteException e) { 2066 throw e.rethrowFromSystemServer(); 2067 } 2068 } 2069 2070 /** 2071 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2072 * activity along with the task, so it is positioned immediately behind 2073 * the task. 2074 */ 2075 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2076 2077 /** 2078 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2079 * user-instigated action, so the current activity will not receive a 2080 * hint that the user is leaving. 2081 */ 2082 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2083 2084 /** 2085 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2086 * with a null options argument. 2087 * 2088 * @param taskId The identifier of the task to be moved, as found in 2089 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2090 * @param flags Additional operational flags, 0 or more of 2091 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2092 */ 2093 public void moveTaskToFront(int taskId, int flags) { 2094 moveTaskToFront(taskId, flags, null); 2095 } 2096 2097 /** 2098 * Ask that the task associated with a given task ID be moved to the 2099 * front of the stack, so it is now visible to the user. Requires that 2100 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2101 * or a SecurityException will be thrown. 2102 * 2103 * @param taskId The identifier of the task to be moved, as found in 2104 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2105 * @param flags Additional operational flags, 0 or more of 2106 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2107 * @param options Additional options for the operation, either null or 2108 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2109 * Context.startActivity(Intent, Bundle)}. 2110 */ 2111 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2112 try { 2113 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 2114 } catch (RemoteException e) { 2115 throw e.rethrowFromSystemServer(); 2116 } 2117 } 2118 2119 /** 2120 * Information you can retrieve about a particular Service that is 2121 * currently running in the system. 2122 */ 2123 public static class RunningServiceInfo implements Parcelable { 2124 /** 2125 * The service component. 2126 */ 2127 public ComponentName service; 2128 2129 /** 2130 * If non-zero, this is the process the service is running in. 2131 */ 2132 public int pid; 2133 2134 /** 2135 * The UID that owns this service. 2136 */ 2137 public int uid; 2138 2139 /** 2140 * The name of the process this service runs in. 2141 */ 2142 public String process; 2143 2144 /** 2145 * Set to true if the service has asked to run as a foreground process. 2146 */ 2147 public boolean foreground; 2148 2149 /** 2150 * The time when the service was first made active, either by someone 2151 * starting or binding to it. This 2152 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2153 */ 2154 public long activeSince; 2155 2156 /** 2157 * Set to true if this service has been explicitly started. 2158 */ 2159 public boolean started; 2160 2161 /** 2162 * Number of clients connected to the service. 2163 */ 2164 public int clientCount; 2165 2166 /** 2167 * Number of times the service's process has crashed while the service 2168 * is running. 2169 */ 2170 public int crashCount; 2171 2172 /** 2173 * The time when there was last activity in the service (either 2174 * explicit requests to start it or clients binding to it). This 2175 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2176 */ 2177 public long lastActivityTime; 2178 2179 /** 2180 * If non-zero, this service is not currently running, but scheduled to 2181 * restart at the given time. 2182 */ 2183 public long restarting; 2184 2185 /** 2186 * Bit for {@link #flags}: set if this service has been 2187 * explicitly started. 2188 */ 2189 public static final int FLAG_STARTED = 1<<0; 2190 2191 /** 2192 * Bit for {@link #flags}: set if the service has asked to 2193 * run as a foreground process. 2194 */ 2195 public static final int FLAG_FOREGROUND = 1<<1; 2196 2197 /** 2198 * Bit for {@link #flags): set if the service is running in a 2199 * core system process. 2200 */ 2201 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2202 2203 /** 2204 * Bit for {@link #flags): set if the service is running in a 2205 * persistent process. 2206 */ 2207 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2208 2209 /** 2210 * Running flags. 2211 */ 2212 public int flags; 2213 2214 /** 2215 * For special services that are bound to by system code, this is 2216 * the package that holds the binding. 2217 */ 2218 public String clientPackage; 2219 2220 /** 2221 * For special services that are bound to by system code, this is 2222 * a string resource providing a user-visible label for who the 2223 * client is. 2224 */ 2225 public int clientLabel; 2226 2227 public RunningServiceInfo() { 2228 } 2229 2230 public int describeContents() { 2231 return 0; 2232 } 2233 2234 public void writeToParcel(Parcel dest, int flags) { 2235 ComponentName.writeToParcel(service, dest); 2236 dest.writeInt(pid); 2237 dest.writeInt(uid); 2238 dest.writeString(process); 2239 dest.writeInt(foreground ? 1 : 0); 2240 dest.writeLong(activeSince); 2241 dest.writeInt(started ? 1 : 0); 2242 dest.writeInt(clientCount); 2243 dest.writeInt(crashCount); 2244 dest.writeLong(lastActivityTime); 2245 dest.writeLong(restarting); 2246 dest.writeInt(this.flags); 2247 dest.writeString(clientPackage); 2248 dest.writeInt(clientLabel); 2249 } 2250 2251 public void readFromParcel(Parcel source) { 2252 service = ComponentName.readFromParcel(source); 2253 pid = source.readInt(); 2254 uid = source.readInt(); 2255 process = source.readString(); 2256 foreground = source.readInt() != 0; 2257 activeSince = source.readLong(); 2258 started = source.readInt() != 0; 2259 clientCount = source.readInt(); 2260 crashCount = source.readInt(); 2261 lastActivityTime = source.readLong(); 2262 restarting = source.readLong(); 2263 flags = source.readInt(); 2264 clientPackage = source.readString(); 2265 clientLabel = source.readInt(); 2266 } 2267 2268 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2269 public RunningServiceInfo createFromParcel(Parcel source) { 2270 return new RunningServiceInfo(source); 2271 } 2272 public RunningServiceInfo[] newArray(int size) { 2273 return new RunningServiceInfo[size]; 2274 } 2275 }; 2276 2277 private RunningServiceInfo(Parcel source) { 2278 readFromParcel(source); 2279 } 2280 } 2281 2282 /** 2283 * Return a list of the services that are currently running. 2284 * 2285 * <p><b>Note: this method is only intended for debugging or implementing 2286 * service management type user interfaces.</b></p> 2287 * 2288 * @param maxNum The maximum number of entries to return in the list. The 2289 * actual number returned may be smaller, depending on how many services 2290 * are running. 2291 * 2292 * @return Returns a list of RunningServiceInfo records describing each of 2293 * the running tasks. 2294 */ 2295 public List<RunningServiceInfo> getRunningServices(int maxNum) 2296 throws SecurityException { 2297 try { 2298 return ActivityManagerNative.getDefault() 2299 .getServices(maxNum, 0); 2300 } catch (RemoteException e) { 2301 throw e.rethrowFromSystemServer(); 2302 } 2303 } 2304 2305 /** 2306 * Returns a PendingIntent you can start to show a control panel for the 2307 * given running service. If the service does not have a control panel, 2308 * null is returned. 2309 */ 2310 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2311 throws SecurityException { 2312 try { 2313 return ActivityManagerNative.getDefault() 2314 .getRunningServiceControlPanel(service); 2315 } catch (RemoteException e) { 2316 throw e.rethrowFromSystemServer(); 2317 } 2318 } 2319 2320 /** 2321 * Information you can retrieve about the available memory through 2322 * {@link ActivityManager#getMemoryInfo}. 2323 */ 2324 public static class MemoryInfo implements Parcelable { 2325 /** 2326 * The available memory on the system. This number should not 2327 * be considered absolute: due to the nature of the kernel, a significant 2328 * portion of this memory is actually in use and needed for the overall 2329 * system to run well. 2330 */ 2331 public long availMem; 2332 2333 /** 2334 * The total memory accessible by the kernel. This is basically the 2335 * RAM size of the device, not including below-kernel fixed allocations 2336 * like DMA buffers, RAM for the baseband CPU, etc. 2337 */ 2338 public long totalMem; 2339 2340 /** 2341 * The threshold of {@link #availMem} at which we consider memory to be 2342 * low and start killing background services and other non-extraneous 2343 * processes. 2344 */ 2345 public long threshold; 2346 2347 /** 2348 * Set to true if the system considers itself to currently be in a low 2349 * memory situation. 2350 */ 2351 public boolean lowMemory; 2352 2353 /** @hide */ 2354 public long hiddenAppThreshold; 2355 /** @hide */ 2356 public long secondaryServerThreshold; 2357 /** @hide */ 2358 public long visibleAppThreshold; 2359 /** @hide */ 2360 public long foregroundAppThreshold; 2361 2362 public MemoryInfo() { 2363 } 2364 2365 public int describeContents() { 2366 return 0; 2367 } 2368 2369 public void writeToParcel(Parcel dest, int flags) { 2370 dest.writeLong(availMem); 2371 dest.writeLong(totalMem); 2372 dest.writeLong(threshold); 2373 dest.writeInt(lowMemory ? 1 : 0); 2374 dest.writeLong(hiddenAppThreshold); 2375 dest.writeLong(secondaryServerThreshold); 2376 dest.writeLong(visibleAppThreshold); 2377 dest.writeLong(foregroundAppThreshold); 2378 } 2379 2380 public void readFromParcel(Parcel source) { 2381 availMem = source.readLong(); 2382 totalMem = source.readLong(); 2383 threshold = source.readLong(); 2384 lowMemory = source.readInt() != 0; 2385 hiddenAppThreshold = source.readLong(); 2386 secondaryServerThreshold = source.readLong(); 2387 visibleAppThreshold = source.readLong(); 2388 foregroundAppThreshold = source.readLong(); 2389 } 2390 2391 public static final Creator<MemoryInfo> CREATOR 2392 = new Creator<MemoryInfo>() { 2393 public MemoryInfo createFromParcel(Parcel source) { 2394 return new MemoryInfo(source); 2395 } 2396 public MemoryInfo[] newArray(int size) { 2397 return new MemoryInfo[size]; 2398 } 2399 }; 2400 2401 private MemoryInfo(Parcel source) { 2402 readFromParcel(source); 2403 } 2404 } 2405 2406 /** 2407 * Return general information about the memory state of the system. This 2408 * can be used to help decide how to manage your own memory, though note 2409 * that polling is not recommended and 2410 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2411 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2412 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2413 * level of your process as needed, which gives a better hint for how to 2414 * manage its memory. 2415 */ 2416 public void getMemoryInfo(MemoryInfo outInfo) { 2417 try { 2418 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2419 } catch (RemoteException e) { 2420 throw e.rethrowFromSystemServer(); 2421 } 2422 } 2423 2424 /** 2425 * Information you can retrieve about an ActivityStack in the system. 2426 * @hide 2427 */ 2428 public static class StackInfo implements Parcelable { 2429 public int stackId; 2430 public Rect bounds = new Rect(); 2431 public int[] taskIds; 2432 public String[] taskNames; 2433 public Rect[] taskBounds; 2434 public int[] taskUserIds; 2435 public ComponentName topActivity; 2436 public int displayId; 2437 public int userId; 2438 public boolean visible; 2439 // Index of the stack in the display's stack list, can be used for comparison of stack order 2440 public int position; 2441 2442 @Override 2443 public int describeContents() { 2444 return 0; 2445 } 2446 2447 @Override 2448 public void writeToParcel(Parcel dest, int flags) { 2449 dest.writeInt(stackId); 2450 dest.writeInt(bounds.left); 2451 dest.writeInt(bounds.top); 2452 dest.writeInt(bounds.right); 2453 dest.writeInt(bounds.bottom); 2454 dest.writeIntArray(taskIds); 2455 dest.writeStringArray(taskNames); 2456 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2457 dest.writeInt(boundsCount); 2458 for (int i = 0; i < boundsCount; i++) { 2459 dest.writeInt(taskBounds[i].left); 2460 dest.writeInt(taskBounds[i].top); 2461 dest.writeInt(taskBounds[i].right); 2462 dest.writeInt(taskBounds[i].bottom); 2463 } 2464 dest.writeIntArray(taskUserIds); 2465 dest.writeInt(displayId); 2466 dest.writeInt(userId); 2467 dest.writeInt(visible ? 1 : 0); 2468 dest.writeInt(position); 2469 if (topActivity != null) { 2470 dest.writeInt(1); 2471 topActivity.writeToParcel(dest, 0); 2472 } else { 2473 dest.writeInt(0); 2474 } 2475 } 2476 2477 public void readFromParcel(Parcel source) { 2478 stackId = source.readInt(); 2479 bounds = new Rect( 2480 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2481 taskIds = source.createIntArray(); 2482 taskNames = source.createStringArray(); 2483 final int boundsCount = source.readInt(); 2484 if (boundsCount > 0) { 2485 taskBounds = new Rect[boundsCount]; 2486 for (int i = 0; i < boundsCount; i++) { 2487 taskBounds[i] = new Rect(); 2488 taskBounds[i].set( 2489 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2490 } 2491 } else { 2492 taskBounds = null; 2493 } 2494 taskUserIds = source.createIntArray(); 2495 displayId = source.readInt(); 2496 userId = source.readInt(); 2497 visible = source.readInt() > 0; 2498 position = source.readInt(); 2499 if (source.readInt() > 0) { 2500 topActivity = ComponentName.readFromParcel(source); 2501 } 2502 } 2503 2504 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2505 @Override 2506 public StackInfo createFromParcel(Parcel source) { 2507 return new StackInfo(source); 2508 } 2509 @Override 2510 public StackInfo[] newArray(int size) { 2511 return new StackInfo[size]; 2512 } 2513 }; 2514 2515 public StackInfo() { 2516 } 2517 2518 private StackInfo(Parcel source) { 2519 readFromParcel(source); 2520 } 2521 2522 public String toString(String prefix) { 2523 StringBuilder sb = new StringBuilder(256); 2524 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2525 sb.append(" bounds="); sb.append(bounds.toShortString()); 2526 sb.append(" displayId="); sb.append(displayId); 2527 sb.append(" userId="); sb.append(userId); 2528 sb.append("\n"); 2529 prefix = prefix + " "; 2530 for (int i = 0; i < taskIds.length; ++i) { 2531 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2532 sb.append(": "); sb.append(taskNames[i]); 2533 if (taskBounds != null) { 2534 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2535 } 2536 sb.append(" userId=").append(taskUserIds[i]); 2537 sb.append(" visible=").append(visible); 2538 if (topActivity != null) { 2539 sb.append(" topActivity=").append(topActivity); 2540 } 2541 sb.append("\n"); 2542 } 2543 return sb.toString(); 2544 } 2545 2546 @Override 2547 public String toString() { 2548 return toString(""); 2549 } 2550 } 2551 2552 /** 2553 * @hide 2554 */ 2555 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2556 try { 2557 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2558 observer, UserHandle.myUserId()); 2559 } catch (RemoteException e) { 2560 throw e.rethrowFromSystemServer(); 2561 } 2562 } 2563 2564 /** 2565 * Permits an application to erase its own data from disk. This is equivalent to 2566 * the user choosing to clear the app's data from within the device settings UI. It 2567 * erases all dynamic data associated with the app -- its private data and data in its 2568 * private area on external storage -- but does not remove the installed application 2569 * itself, nor any OBB files. 2570 * 2571 * @return {@code true} if the application successfully requested that the application's 2572 * data be erased; {@code false} otherwise. 2573 */ 2574 public boolean clearApplicationUserData() { 2575 return clearApplicationUserData(mContext.getPackageName(), null); 2576 } 2577 2578 2579 /** 2580 * Permits an application to get the persistent URI permissions granted to another. 2581 * 2582 * <p>Typically called by Settings. 2583 * 2584 * @param packageName application to look for the granted permissions 2585 * @return list of granted URI permissions 2586 * 2587 * @hide 2588 */ 2589 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2590 try { 2591 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2592 UserHandle.myUserId()); 2593 } catch (RemoteException e) { 2594 throw e.rethrowFromSystemServer(); 2595 } 2596 } 2597 2598 /** 2599 * Permits an application to clear the persistent URI permissions granted to another. 2600 * 2601 * <p>Typically called by Settings. 2602 * 2603 * @param packageName application to clear its granted permissions 2604 * 2605 * @hide 2606 */ 2607 public void clearGrantedUriPermissions(String packageName) { 2608 try { 2609 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2610 UserHandle.myUserId()); 2611 } catch (RemoteException e) { 2612 throw e.rethrowFromSystemServer(); 2613 } 2614 } 2615 2616 /** 2617 * Information you can retrieve about any processes that are in an error condition. 2618 */ 2619 public static class ProcessErrorStateInfo implements Parcelable { 2620 /** 2621 * Condition codes 2622 */ 2623 public static final int NO_ERROR = 0; 2624 public static final int CRASHED = 1; 2625 public static final int NOT_RESPONDING = 2; 2626 2627 /** 2628 * The condition that the process is in. 2629 */ 2630 public int condition; 2631 2632 /** 2633 * The process name in which the crash or error occurred. 2634 */ 2635 public String processName; 2636 2637 /** 2638 * The pid of this process; 0 if none 2639 */ 2640 public int pid; 2641 2642 /** 2643 * The kernel user-ID that has been assigned to this process; 2644 * currently this is not a unique ID (multiple applications can have 2645 * the same uid). 2646 */ 2647 public int uid; 2648 2649 /** 2650 * The activity name associated with the error, if known. May be null. 2651 */ 2652 public String tag; 2653 2654 /** 2655 * A short message describing the error condition. 2656 */ 2657 public String shortMsg; 2658 2659 /** 2660 * A long message describing the error condition. 2661 */ 2662 public String longMsg; 2663 2664 /** 2665 * The stack trace where the error originated. May be null. 2666 */ 2667 public String stackTrace; 2668 2669 /** 2670 * to be deprecated: This value will always be null. 2671 */ 2672 public byte[] crashData = null; 2673 2674 public ProcessErrorStateInfo() { 2675 } 2676 2677 @Override 2678 public int describeContents() { 2679 return 0; 2680 } 2681 2682 @Override 2683 public void writeToParcel(Parcel dest, int flags) { 2684 dest.writeInt(condition); 2685 dest.writeString(processName); 2686 dest.writeInt(pid); 2687 dest.writeInt(uid); 2688 dest.writeString(tag); 2689 dest.writeString(shortMsg); 2690 dest.writeString(longMsg); 2691 dest.writeString(stackTrace); 2692 } 2693 2694 public void readFromParcel(Parcel source) { 2695 condition = source.readInt(); 2696 processName = source.readString(); 2697 pid = source.readInt(); 2698 uid = source.readInt(); 2699 tag = source.readString(); 2700 shortMsg = source.readString(); 2701 longMsg = source.readString(); 2702 stackTrace = source.readString(); 2703 } 2704 2705 public static final Creator<ProcessErrorStateInfo> CREATOR = 2706 new Creator<ProcessErrorStateInfo>() { 2707 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2708 return new ProcessErrorStateInfo(source); 2709 } 2710 public ProcessErrorStateInfo[] newArray(int size) { 2711 return new ProcessErrorStateInfo[size]; 2712 } 2713 }; 2714 2715 private ProcessErrorStateInfo(Parcel source) { 2716 readFromParcel(source); 2717 } 2718 } 2719 2720 /** 2721 * Returns a list of any processes that are currently in an error condition. The result 2722 * will be null if all processes are running properly at this time. 2723 * 2724 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2725 * current error conditions (it will not return an empty list). This list ordering is not 2726 * specified. 2727 */ 2728 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2729 try { 2730 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2731 } catch (RemoteException e) { 2732 throw e.rethrowFromSystemServer(); 2733 } 2734 } 2735 2736 /** 2737 * Information you can retrieve about a running process. 2738 */ 2739 public static class RunningAppProcessInfo implements Parcelable { 2740 /** 2741 * The name of the process that this object is associated with 2742 */ 2743 public String processName; 2744 2745 /** 2746 * The pid of this process; 0 if none 2747 */ 2748 public int pid; 2749 2750 /** 2751 * The user id of this process. 2752 */ 2753 public int uid; 2754 2755 /** 2756 * All packages that have been loaded into the process. 2757 */ 2758 public String pkgList[]; 2759 2760 /** 2761 * Constant for {@link #flags}: this is an app that is unable to 2762 * correctly save its state when going to the background, 2763 * so it can not be killed while in the background. 2764 * @hide 2765 */ 2766 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2767 2768 /** 2769 * Constant for {@link #flags}: this process is associated with a 2770 * persistent system app. 2771 * @hide 2772 */ 2773 public static final int FLAG_PERSISTENT = 1<<1; 2774 2775 /** 2776 * Constant for {@link #flags}: this process is associated with a 2777 * persistent system app. 2778 * @hide 2779 */ 2780 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2781 2782 /** 2783 * Flags of information. May be any of 2784 * {@link #FLAG_CANT_SAVE_STATE}. 2785 * @hide 2786 */ 2787 public int flags; 2788 2789 /** 2790 * Last memory trim level reported to the process: corresponds to 2791 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2792 * ComponentCallbacks2.onTrimMemory(int)}. 2793 */ 2794 public int lastTrimLevel; 2795 2796 /** 2797 * Constant for {@link #importance}: This process is running the 2798 * foreground UI; that is, it is the thing currently at the top of the screen 2799 * that the user is interacting with. 2800 */ 2801 public static final int IMPORTANCE_FOREGROUND = 100; 2802 2803 /** 2804 * Constant for {@link #importance}: This process is running a foreground 2805 * service, for example to perform music playback even while the user is 2806 * not immediately in the app. This generally indicates that the process 2807 * is doing something the user actively cares about. 2808 */ 2809 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2810 2811 /** 2812 * Constant for {@link #importance}: This process is running the foreground 2813 * UI, but the device is asleep so it is not visible to the user. This means 2814 * the user is not really aware of the process, because they can not see or 2815 * interact with it, but it is quite important because it what they expect to 2816 * return to once unlocking the device. 2817 */ 2818 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2819 2820 /** 2821 * Constant for {@link #importance}: This process is running something 2822 * that is actively visible to the user, though not in the immediate 2823 * foreground. This may be running a window that is behind the current 2824 * foreground (so paused and with its state saved, not interacting with 2825 * the user, but visible to them to some degree); it may also be running 2826 * other services under the system's control that it inconsiders important. 2827 */ 2828 public static final int IMPORTANCE_VISIBLE = 200; 2829 2830 /** 2831 * Constant for {@link #importance}: This process is not something the user 2832 * is directly aware of, but is otherwise perceptable to them to some degree. 2833 */ 2834 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2835 2836 /** 2837 * Constant for {@link #importance}: This process is running an 2838 * application that can not save its state, and thus can't be killed 2839 * while in the background. 2840 * @hide 2841 */ 2842 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2843 2844 /** 2845 * Constant for {@link #importance}: This process is contains services 2846 * that should remain running. These are background services apps have 2847 * started, not something the user is aware of, so they may be killed by 2848 * the system relatively freely (though it is generally desired that they 2849 * stay running as long as they want to). 2850 */ 2851 public static final int IMPORTANCE_SERVICE = 300; 2852 2853 /** 2854 * Constant for {@link #importance}: This process process contains 2855 * background code that is expendable. 2856 */ 2857 public static final int IMPORTANCE_BACKGROUND = 400; 2858 2859 /** 2860 * Constant for {@link #importance}: This process is empty of any 2861 * actively running code. 2862 */ 2863 public static final int IMPORTANCE_EMPTY = 500; 2864 2865 /** 2866 * Constant for {@link #importance}: This process does not exist. 2867 */ 2868 public static final int IMPORTANCE_GONE = 1000; 2869 2870 /** @hide */ 2871 public static int procStateToImportance(int procState) { 2872 if (procState == PROCESS_STATE_NONEXISTENT) { 2873 return IMPORTANCE_GONE; 2874 } else if (procState >= PROCESS_STATE_HOME) { 2875 return IMPORTANCE_BACKGROUND; 2876 } else if (procState >= PROCESS_STATE_SERVICE) { 2877 return IMPORTANCE_SERVICE; 2878 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2879 return IMPORTANCE_CANT_SAVE_STATE; 2880 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2881 return IMPORTANCE_PERCEPTIBLE; 2882 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2883 return IMPORTANCE_VISIBLE; 2884 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2885 return IMPORTANCE_TOP_SLEEPING; 2886 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2887 return IMPORTANCE_FOREGROUND_SERVICE; 2888 } else { 2889 return IMPORTANCE_FOREGROUND; 2890 } 2891 } 2892 2893 /** 2894 * The relative importance level that the system places on this 2895 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2896 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2897 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2898 * constants are numbered so that "more important" values are always 2899 * smaller than "less important" values. 2900 */ 2901 public int importance; 2902 2903 /** 2904 * An additional ordering within a particular {@link #importance} 2905 * category, providing finer-grained information about the relative 2906 * utility of processes within a category. This number means nothing 2907 * except that a smaller values are more recently used (and thus 2908 * more important). Currently an LRU value is only maintained for 2909 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2910 * be maintained in the future. 2911 */ 2912 public int lru; 2913 2914 /** 2915 * Constant for {@link #importanceReasonCode}: nothing special has 2916 * been specified for the reason for this level. 2917 */ 2918 public static final int REASON_UNKNOWN = 0; 2919 2920 /** 2921 * Constant for {@link #importanceReasonCode}: one of the application's 2922 * content providers is being used by another process. The pid of 2923 * the client process is in {@link #importanceReasonPid} and the 2924 * target provider in this process is in 2925 * {@link #importanceReasonComponent}. 2926 */ 2927 public static final int REASON_PROVIDER_IN_USE = 1; 2928 2929 /** 2930 * Constant for {@link #importanceReasonCode}: one of the application's 2931 * content providers is being used by another process. The pid of 2932 * the client process is in {@link #importanceReasonPid} and the 2933 * target provider in this process is in 2934 * {@link #importanceReasonComponent}. 2935 */ 2936 public static final int REASON_SERVICE_IN_USE = 2; 2937 2938 /** 2939 * The reason for {@link #importance}, if any. 2940 */ 2941 public int importanceReasonCode; 2942 2943 /** 2944 * For the specified values of {@link #importanceReasonCode}, this 2945 * is the process ID of the other process that is a client of this 2946 * process. This will be 0 if no other process is using this one. 2947 */ 2948 public int importanceReasonPid; 2949 2950 /** 2951 * For the specified values of {@link #importanceReasonCode}, this 2952 * is the name of the component that is being used in this process. 2953 */ 2954 public ComponentName importanceReasonComponent; 2955 2956 /** 2957 * When {@link #importanceReasonPid} is non-0, this is the importance 2958 * of the other pid. @hide 2959 */ 2960 public int importanceReasonImportance; 2961 2962 /** 2963 * Current process state, as per PROCESS_STATE_* constants. 2964 * @hide 2965 */ 2966 public int processState; 2967 2968 public RunningAppProcessInfo() { 2969 importance = IMPORTANCE_FOREGROUND; 2970 importanceReasonCode = REASON_UNKNOWN; 2971 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2972 } 2973 2974 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2975 processName = pProcessName; 2976 pid = pPid; 2977 pkgList = pArr; 2978 } 2979 2980 public int describeContents() { 2981 return 0; 2982 } 2983 2984 public void writeToParcel(Parcel dest, int flags) { 2985 dest.writeString(processName); 2986 dest.writeInt(pid); 2987 dest.writeInt(uid); 2988 dest.writeStringArray(pkgList); 2989 dest.writeInt(this.flags); 2990 dest.writeInt(lastTrimLevel); 2991 dest.writeInt(importance); 2992 dest.writeInt(lru); 2993 dest.writeInt(importanceReasonCode); 2994 dest.writeInt(importanceReasonPid); 2995 ComponentName.writeToParcel(importanceReasonComponent, dest); 2996 dest.writeInt(importanceReasonImportance); 2997 dest.writeInt(processState); 2998 } 2999 3000 public void readFromParcel(Parcel source) { 3001 processName = source.readString(); 3002 pid = source.readInt(); 3003 uid = source.readInt(); 3004 pkgList = source.readStringArray(); 3005 flags = source.readInt(); 3006 lastTrimLevel = source.readInt(); 3007 importance = source.readInt(); 3008 lru = source.readInt(); 3009 importanceReasonCode = source.readInt(); 3010 importanceReasonPid = source.readInt(); 3011 importanceReasonComponent = ComponentName.readFromParcel(source); 3012 importanceReasonImportance = source.readInt(); 3013 processState = source.readInt(); 3014 } 3015 3016 public static final Creator<RunningAppProcessInfo> CREATOR = 3017 new Creator<RunningAppProcessInfo>() { 3018 public RunningAppProcessInfo createFromParcel(Parcel source) { 3019 return new RunningAppProcessInfo(source); 3020 } 3021 public RunningAppProcessInfo[] newArray(int size) { 3022 return new RunningAppProcessInfo[size]; 3023 } 3024 }; 3025 3026 private RunningAppProcessInfo(Parcel source) { 3027 readFromParcel(source); 3028 } 3029 } 3030 3031 /** 3032 * Returns a list of application processes installed on external media 3033 * that are running on the device. 3034 * 3035 * <p><b>Note: this method is only intended for debugging or building 3036 * a user-facing process management UI.</b></p> 3037 * 3038 * @return Returns a list of ApplicationInfo records, or null if none 3039 * This list ordering is not specified. 3040 * @hide 3041 */ 3042 public List<ApplicationInfo> getRunningExternalApplications() { 3043 try { 3044 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 3045 } catch (RemoteException e) { 3046 throw e.rethrowFromSystemServer(); 3047 } 3048 } 3049 3050 /** 3051 * Sets the memory trim mode for a process and schedules a memory trim operation. 3052 * 3053 * <p><b>Note: this method is only intended for testing framework.</b></p> 3054 * 3055 * @return Returns true if successful. 3056 * @hide 3057 */ 3058 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3059 try { 3060 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 3061 level); 3062 } catch (RemoteException e) { 3063 throw e.rethrowFromSystemServer(); 3064 } 3065 } 3066 3067 /** 3068 * Returns a list of application processes that are running on the device. 3069 * 3070 * <p><b>Note: this method is only intended for debugging or building 3071 * a user-facing process management UI.</b></p> 3072 * 3073 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3074 * running processes (it will not return an empty list). This list ordering is not 3075 * specified. 3076 */ 3077 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3078 try { 3079 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 3080 } catch (RemoteException e) { 3081 throw e.rethrowFromSystemServer(); 3082 } 3083 } 3084 3085 /** 3086 * Return the importance of a given package name, based on the processes that are 3087 * currently running. The return value is one of the importance constants defined 3088 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3089 * processes that this package has code running inside of. If there are no processes 3090 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3091 * @hide 3092 */ 3093 @SystemApi @TestApi 3094 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3095 public int getPackageImportance(String packageName) { 3096 try { 3097 int procState = getService().getPackageProcessState(packageName, 3098 mContext.getOpPackageName()); 3099 return RunningAppProcessInfo.procStateToImportance(procState); 3100 } catch (RemoteException e) { 3101 throw e.rethrowFromSystemServer(); 3102 } 3103 } 3104 3105 /** 3106 * Callback to get reports about changes to the importance of a uid. Use with 3107 * {@link #addOnUidImportanceListener}. 3108 * @hide 3109 */ 3110 @SystemApi @TestApi 3111 public interface OnUidImportanceListener { 3112 /** 3113 * The importance if a given uid has changed. Will be one of the importance 3114 * values in {@link RunningAppProcessInfo}; 3115 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3116 * when the uid is no longer running at all. This callback will happen on a thread 3117 * from a thread pool, not the main UI thread. 3118 * @param uid The uid whose importance has changed. 3119 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3120 */ 3121 void onUidImportance(int uid, int importance); 3122 } 3123 3124 /** 3125 * Start monitoring changes to the imoportance of uids running in the system. 3126 * @param listener The listener callback that will receive change reports. 3127 * @param importanceCutpoint The level of importance in which the caller is interested 3128 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3129 * is used here, you will receive a call each time a uids importance transitions between 3130 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3131 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3132 * 3133 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3134 * permission to use this feature.</p> 3135 * 3136 * @throws IllegalArgumentException If the listener is already registered. 3137 * @throws SecurityException If the caller does not hold 3138 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3139 * @hide 3140 */ 3141 @SystemApi @TestApi 3142 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3143 int importanceCutpoint) { 3144 synchronized (this) { 3145 if (mImportanceListeners.containsKey(listener)) { 3146 throw new IllegalArgumentException("Listener already registered: " + listener); 3147 } 3148 // TODO: implement the cut point in the system process to avoid IPCs. 3149 UidObserver observer = new UidObserver(listener, importanceCutpoint); 3150 try { 3151 getService().registerUidObserver(observer, 3152 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, mContext.getOpPackageName()); 3153 } catch (RemoteException e) { 3154 throw e.rethrowFromSystemServer(); 3155 } 3156 mImportanceListeners.put(listener, observer); 3157 } 3158 } 3159 3160 /** 3161 * Remove an importance listener that was previously registered with 3162 * {@link #addOnUidImportanceListener}. 3163 * 3164 * @throws IllegalArgumentException If the listener is not registered. 3165 * @hide 3166 */ 3167 @SystemApi @TestApi 3168 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3169 synchronized (this) { 3170 UidObserver observer = mImportanceListeners.remove(listener); 3171 if (observer == null) { 3172 throw new IllegalArgumentException("Listener not registered: " + listener); 3173 } 3174 try { 3175 getService().unregisterUidObserver(observer); 3176 } catch (RemoteException e) { 3177 throw e.rethrowFromSystemServer(); 3178 } 3179 } 3180 } 3181 3182 /** 3183 * Return global memory state information for the calling process. This 3184 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3185 * only fields that will be filled in are 3186 * {@link RunningAppProcessInfo#pid}, 3187 * {@link RunningAppProcessInfo#uid}, 3188 * {@link RunningAppProcessInfo#lastTrimLevel}, 3189 * {@link RunningAppProcessInfo#importance}, 3190 * {@link RunningAppProcessInfo#lru}, and 3191 * {@link RunningAppProcessInfo#importanceReasonCode}. 3192 */ 3193 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3194 try { 3195 ActivityManagerNative.getDefault().getMyMemoryState(outState); 3196 } catch (RemoteException e) { 3197 throw e.rethrowFromSystemServer(); 3198 } 3199 } 3200 3201 /** 3202 * Return information about the memory usage of one or more processes. 3203 * 3204 * <p><b>Note: this method is only intended for debugging or building 3205 * a user-facing process management UI.</b></p> 3206 * 3207 * @param pids The pids of the processes whose memory usage is to be 3208 * retrieved. 3209 * @return Returns an array of memory information, one for each 3210 * requested pid. 3211 */ 3212 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3213 try { 3214 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 3215 } catch (RemoteException e) { 3216 throw e.rethrowFromSystemServer(); 3217 } 3218 } 3219 3220 /** 3221 * @deprecated This is now just a wrapper for 3222 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3223 * is no longer available to applications because it allows them to 3224 * break other applications by removing their alarms, stopping their 3225 * services, etc. 3226 */ 3227 @Deprecated 3228 public void restartPackage(String packageName) { 3229 killBackgroundProcesses(packageName); 3230 } 3231 3232 /** 3233 * Have the system immediately kill all background processes associated 3234 * with the given package. This is the same as the kernel killing those 3235 * processes to reclaim memory; the system will take care of restarting 3236 * these processes in the future as needed. 3237 * 3238 * <p>You must hold the permission 3239 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3240 * call this method. 3241 * 3242 * @param packageName The name of the package whose processes are to 3243 * be killed. 3244 */ 3245 public void killBackgroundProcesses(String packageName) { 3246 try { 3247 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 3248 UserHandle.myUserId()); 3249 } catch (RemoteException e) { 3250 throw e.rethrowFromSystemServer(); 3251 } 3252 } 3253 3254 /** 3255 * Kills the specified UID. 3256 * @param uid The UID to kill. 3257 * @param reason The reason for the kill. 3258 * 3259 * @hide 3260 */ 3261 @SystemApi 3262 @RequiresPermission(Manifest.permission.KILL_UID) 3263 public void killUid(int uid, String reason) { 3264 try { 3265 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3266 UserHandle.getUserId(uid), reason); 3267 } catch (RemoteException e) { 3268 throw e.rethrowFromSystemServer(); 3269 } 3270 } 3271 3272 /** 3273 * Have the system perform a force stop of everything associated with 3274 * the given application package. All processes that share its uid 3275 * will be killed, all services it has running stopped, all activities 3276 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3277 * broadcast will be sent, so that any of its registered alarms can 3278 * be stopped, notifications removed, etc. 3279 * 3280 * <p>You must hold the permission 3281 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3282 * call this method. 3283 * 3284 * @param packageName The name of the package to be stopped. 3285 * @param userId The user for which the running package is to be stopped. 3286 * 3287 * @hide This is not available to third party applications due to 3288 * it allowing them to break other applications by stopping their 3289 * services, removing their alarms, etc. 3290 */ 3291 public void forceStopPackageAsUser(String packageName, int userId) { 3292 try { 3293 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3294 } catch (RemoteException e) { 3295 throw e.rethrowFromSystemServer(); 3296 } 3297 } 3298 3299 /** 3300 * @see #forceStopPackageAsUser(String, int) 3301 * @hide 3302 */ 3303 public void forceStopPackage(String packageName) { 3304 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3305 } 3306 3307 /** 3308 * Get the device configuration attributes. 3309 */ 3310 public ConfigurationInfo getDeviceConfigurationInfo() { 3311 try { 3312 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3313 } catch (RemoteException e) { 3314 throw e.rethrowFromSystemServer(); 3315 } 3316 } 3317 3318 /** 3319 * Get the preferred density of icons for the launcher. This is used when 3320 * custom drawables are created (e.g., for shortcuts). 3321 * 3322 * @return density in terms of DPI 3323 */ 3324 public int getLauncherLargeIconDensity() { 3325 final Resources res = mContext.getResources(); 3326 final int density = res.getDisplayMetrics().densityDpi; 3327 final int sw = res.getConfiguration().smallestScreenWidthDp; 3328 3329 if (sw < 600) { 3330 // Smaller than approx 7" tablets, use the regular icon size. 3331 return density; 3332 } 3333 3334 switch (density) { 3335 case DisplayMetrics.DENSITY_LOW: 3336 return DisplayMetrics.DENSITY_MEDIUM; 3337 case DisplayMetrics.DENSITY_MEDIUM: 3338 return DisplayMetrics.DENSITY_HIGH; 3339 case DisplayMetrics.DENSITY_TV: 3340 return DisplayMetrics.DENSITY_XHIGH; 3341 case DisplayMetrics.DENSITY_HIGH: 3342 return DisplayMetrics.DENSITY_XHIGH; 3343 case DisplayMetrics.DENSITY_XHIGH: 3344 return DisplayMetrics.DENSITY_XXHIGH; 3345 case DisplayMetrics.DENSITY_XXHIGH: 3346 return DisplayMetrics.DENSITY_XHIGH * 2; 3347 default: 3348 // The density is some abnormal value. Return some other 3349 // abnormal value that is a reasonable scaling of it. 3350 return (int)((density*1.5f)+.5f); 3351 } 3352 } 3353 3354 /** 3355 * Get the preferred launcher icon size. This is used when custom drawables 3356 * are created (e.g., for shortcuts). 3357 * 3358 * @return dimensions of square icons in terms of pixels 3359 */ 3360 public int getLauncherLargeIconSize() { 3361 return getLauncherLargeIconSizeInner(mContext); 3362 } 3363 3364 static int getLauncherLargeIconSizeInner(Context context) { 3365 final Resources res = context.getResources(); 3366 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3367 final int sw = res.getConfiguration().smallestScreenWidthDp; 3368 3369 if (sw < 600) { 3370 // Smaller than approx 7" tablets, use the regular icon size. 3371 return size; 3372 } 3373 3374 final int density = res.getDisplayMetrics().densityDpi; 3375 3376 switch (density) { 3377 case DisplayMetrics.DENSITY_LOW: 3378 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3379 case DisplayMetrics.DENSITY_MEDIUM: 3380 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3381 case DisplayMetrics.DENSITY_TV: 3382 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3383 case DisplayMetrics.DENSITY_HIGH: 3384 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3385 case DisplayMetrics.DENSITY_XHIGH: 3386 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3387 case DisplayMetrics.DENSITY_XXHIGH: 3388 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3389 default: 3390 // The density is some abnormal value. Return some other 3391 // abnormal value that is a reasonable scaling of it. 3392 return (int)((size*1.5f) + .5f); 3393 } 3394 } 3395 3396 /** 3397 * Returns "true" if the user interface is currently being messed with 3398 * by a monkey. 3399 */ 3400 public static boolean isUserAMonkey() { 3401 try { 3402 return ActivityManagerNative.getDefault().isUserAMonkey(); 3403 } catch (RemoteException e) { 3404 throw e.rethrowFromSystemServer(); 3405 } 3406 } 3407 3408 /** 3409 * Returns "true" if device is running in a test harness. 3410 */ 3411 public static boolean isRunningInTestHarness() { 3412 return SystemProperties.getBoolean("ro.test_harness", false); 3413 } 3414 3415 /** 3416 * Returns the launch count of each installed package. 3417 * 3418 * @hide 3419 */ 3420 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3421 try { 3422 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3423 ServiceManager.getService("usagestats")); 3424 if (usageStatsService == null) { 3425 return new HashMap<String, Integer>(); 3426 } 3427 3428 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3429 ActivityThread.currentPackageName()); 3430 if (allPkgUsageStats == null) { 3431 return new HashMap<String, Integer>(); 3432 } 3433 3434 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3435 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3436 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3437 } 3438 3439 return launchCounts; 3440 } catch (RemoteException e) { 3441 Log.w(TAG, "Could not query launch counts", e); 3442 return new HashMap<String, Integer>(); 3443 } 3444 }*/ 3445 3446 /** @hide */ 3447 public static int checkComponentPermission(String permission, int uid, 3448 int owningUid, boolean exported) { 3449 // Root, system server get to do everything. 3450 final int appId = UserHandle.getAppId(uid); 3451 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3452 return PackageManager.PERMISSION_GRANTED; 3453 } 3454 // Isolated processes don't get any permissions. 3455 if (UserHandle.isIsolated(uid)) { 3456 return PackageManager.PERMISSION_DENIED; 3457 } 3458 // If there is a uid that owns whatever is being accessed, it has 3459 // blanket access to it regardless of the permissions it requires. 3460 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3461 return PackageManager.PERMISSION_GRANTED; 3462 } 3463 // If the target is not exported, then nobody else can get to it. 3464 if (!exported) { 3465 /* 3466 RuntimeException here = new RuntimeException("here"); 3467 here.fillInStackTrace(); 3468 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3469 here); 3470 */ 3471 return PackageManager.PERMISSION_DENIED; 3472 } 3473 if (permission == null) { 3474 return PackageManager.PERMISSION_GRANTED; 3475 } 3476 try { 3477 return AppGlobals.getPackageManager() 3478 .checkUidPermission(permission, uid); 3479 } catch (RemoteException e) { 3480 throw e.rethrowFromSystemServer(); 3481 } 3482 } 3483 3484 /** @hide */ 3485 public static int checkUidPermission(String permission, int uid) { 3486 try { 3487 return AppGlobals.getPackageManager() 3488 .checkUidPermission(permission, uid); 3489 } catch (RemoteException e) { 3490 throw e.rethrowFromSystemServer(); 3491 } 3492 } 3493 3494 /** 3495 * @hide 3496 * Helper for dealing with incoming user arguments to system service calls. 3497 * Takes care of checking permissions and converting USER_CURRENT to the 3498 * actual current user. 3499 * 3500 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3501 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3502 * @param userId The user id argument supplied by the caller -- this is the user 3503 * they want to run as. 3504 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3505 * to get a USER_ALL returned and deal with it correctly. If false, 3506 * an exception will be thrown if USER_ALL is supplied. 3507 * @param requireFull If true, the caller must hold 3508 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3509 * different user than their current process; otherwise they must hold 3510 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3511 * @param name Optional textual name of the incoming call; only for generating error messages. 3512 * @param callerPackage Optional package name of caller; only for error messages. 3513 * 3514 * @return Returns the user ID that the call should run as. Will always be a concrete 3515 * user number, unless <var>allowAll</var> is true in which case it could also be 3516 * USER_ALL. 3517 */ 3518 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3519 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3520 if (UserHandle.getUserId(callingUid) == userId) { 3521 return userId; 3522 } 3523 try { 3524 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3525 callingUid, userId, allowAll, requireFull, name, callerPackage); 3526 } catch (RemoteException e) { 3527 throw e.rethrowFromSystemServer(); 3528 } 3529 } 3530 3531 /** 3532 * Gets the userId of the current foreground user. Requires system permissions. 3533 * @hide 3534 */ 3535 @SystemApi 3536 public static int getCurrentUser() { 3537 UserInfo ui; 3538 try { 3539 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3540 return ui != null ? ui.id : 0; 3541 } catch (RemoteException e) { 3542 throw e.rethrowFromSystemServer(); 3543 } 3544 } 3545 3546 /** 3547 * @param userid the user's id. Zero indicates the default user. 3548 * @hide 3549 */ 3550 public boolean switchUser(int userid) { 3551 try { 3552 return ActivityManagerNative.getDefault().switchUser(userid); 3553 } catch (RemoteException e) { 3554 throw e.rethrowFromSystemServer(); 3555 } 3556 } 3557 3558 /** 3559 * Logs out current current foreground user by switching to the system user and stopping the 3560 * user being switched from. 3561 * @hide 3562 */ 3563 public static void logoutCurrentUser() { 3564 int currentUser = ActivityManager.getCurrentUser(); 3565 if (currentUser != UserHandle.USER_SYSTEM) { 3566 try { 3567 ActivityManagerNative.getDefault().switchUser(UserHandle.USER_SYSTEM); 3568 ActivityManagerNative.getDefault().stopUser(currentUser, /* force= */ false, null); 3569 } catch (RemoteException e) { 3570 e.rethrowFromSystemServer(); 3571 } 3572 } 3573 } 3574 3575 /** {@hide} */ 3576 public static final int FLAG_OR_STOPPED = 1 << 0; 3577 /** {@hide} */ 3578 public static final int FLAG_AND_LOCKED = 1 << 1; 3579 /** {@hide} */ 3580 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3581 /** {@hide} */ 3582 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3583 3584 /** 3585 * Return whether the given user is actively running. This means that 3586 * the user is in the "started" state, not "stopped" -- it is currently 3587 * allowed to run code through scheduled alarms, receiving broadcasts, 3588 * etc. A started user may be either the current foreground user or a 3589 * background user; the result here does not distinguish between the two. 3590 * @param userid the user's id. Zero indicates the default user. 3591 * @hide 3592 */ 3593 public boolean isUserRunning(int userId) { 3594 try { 3595 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3596 } catch (RemoteException e) { 3597 throw e.rethrowFromSystemServer(); 3598 } 3599 } 3600 3601 /** {@hide} */ 3602 public boolean isVrModePackageEnabled(ComponentName component) { 3603 try { 3604 return ActivityManagerNative.getDefault().isVrModePackageEnabled(component); 3605 } catch (RemoteException e) { 3606 throw e.rethrowFromSystemServer(); 3607 } 3608 } 3609 3610 /** 3611 * Perform a system dump of various state associated with the given application 3612 * package name. This call blocks while the dump is being performed, so should 3613 * not be done on a UI thread. The data will be written to the given file 3614 * descriptor as text. An application must hold the 3615 * {@link android.Manifest.permission#DUMP} permission to make this call. 3616 * @param fd The file descriptor that the dump should be written to. The file 3617 * descriptor is <em>not</em> closed by this function; the caller continues to 3618 * own it. 3619 * @param packageName The name of the package that is to be dumped. 3620 */ 3621 public void dumpPackageState(FileDescriptor fd, String packageName) { 3622 dumpPackageStateStatic(fd, packageName); 3623 } 3624 3625 /** 3626 * @hide 3627 */ 3628 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3629 FileOutputStream fout = new FileOutputStream(fd); 3630 PrintWriter pw = new FastPrintWriter(fout); 3631 dumpService(pw, fd, "package", new String[] { packageName }); 3632 pw.println(); 3633 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3634 "-a", "package", packageName }); 3635 pw.println(); 3636 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3637 pw.println(); 3638 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3639 pw.println(); 3640 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3641 pw.println(); 3642 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3643 pw.flush(); 3644 } 3645 3646 /** 3647 * @hide 3648 */ 3649 public static void broadcastStickyIntent(Intent intent, int userId) { 3650 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3651 } 3652 3653 /** 3654 * Convenience for sending a sticky broadcast. For internal use only. 3655 * 3656 * @hide 3657 */ 3658 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3659 try { 3660 getService().broadcastIntent( 3661 null, intent, null, null, Activity.RESULT_OK, null, null, 3662 null /*permission*/, appOp, null, false, true, userId); 3663 } catch (RemoteException ex) { 3664 } 3665 } 3666 3667 /** 3668 * @hide 3669 */ 3670 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3671 String tag) { 3672 try { 3673 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3674 sourceUid, sourcePkg, tag); 3675 } catch (RemoteException ex) { 3676 } 3677 } 3678 3679 /** 3680 * @hide 3681 */ 3682 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3683 try { 3684 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3685 } catch (RemoteException ex) { 3686 } 3687 } 3688 3689 /** 3690 * @hide 3691 */ 3692 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3693 try { 3694 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3695 } catch (RemoteException ex) { 3696 } 3697 } 3698 3699 /** 3700 * @hide 3701 */ 3702 public static IActivityManager getService() { 3703 return IActivityManagerSingleton.get(); 3704 } 3705 3706 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3707 new Singleton<IActivityManager>() { 3708 @Override 3709 protected IActivityManager create() { 3710 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3711 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3712 return am; 3713 } 3714 }; 3715 3716 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3717 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3718 IBinder service = ServiceManager.checkService(name); 3719 if (service == null) { 3720 pw.println(" (Service not found)"); 3721 return; 3722 } 3723 TransferPipe tp = null; 3724 try { 3725 pw.flush(); 3726 tp = new TransferPipe(); 3727 tp.setBufferPrefix(" "); 3728 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3729 tp.go(fd, 10000); 3730 } catch (Throwable e) { 3731 if (tp != null) { 3732 tp.kill(); 3733 } 3734 pw.println("Failure dumping service:"); 3735 e.printStackTrace(pw); 3736 } 3737 } 3738 3739 /** 3740 * Request that the system start watching for the calling process to exceed a pss 3741 * size as given here. Once called, the system will look for any occasions where it 3742 * sees the associated process with a larger pss size and, when this happens, automatically 3743 * pull a heap dump from it and allow the user to share the data. Note that this request 3744 * continues running even if the process is killed and restarted. To remove the watch, 3745 * use {@link #clearWatchHeapLimit()}. 3746 * 3747 * <p>This API only work if the calling process has been marked as 3748 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3749 * (userdebug or eng) build.</p> 3750 * 3751 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3752 * handle heap limit reports themselves.</p> 3753 * 3754 * @param pssSize The size in bytes to set the limit at. 3755 */ 3756 public void setWatchHeapLimit(long pssSize) { 3757 try { 3758 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3759 mContext.getPackageName()); 3760 } catch (RemoteException e) { 3761 throw e.rethrowFromSystemServer(); 3762 } 3763 } 3764 3765 /** 3766 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3767 * If your package has an activity handling this action, it will be launched with the 3768 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3769 * match the activty must support this action and a MIME type of "*/*". 3770 */ 3771 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3772 3773 /** 3774 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3775 */ 3776 public void clearWatchHeapLimit() { 3777 try { 3778 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3779 } catch (RemoteException e) { 3780 throw e.rethrowFromSystemServer(); 3781 } 3782 } 3783 3784 /** 3785 * @hide 3786 */ 3787 public void startLockTaskMode(int taskId) { 3788 try { 3789 ActivityManagerNative.getDefault().startLockTaskModeById(taskId); 3790 } catch (RemoteException e) { 3791 throw e.rethrowFromSystemServer(); 3792 } 3793 } 3794 3795 /** 3796 * @hide 3797 */ 3798 public void stopLockTaskMode() { 3799 try { 3800 ActivityManagerNative.getDefault().stopLockTaskMode(); 3801 } catch (RemoteException e) { 3802 throw e.rethrowFromSystemServer(); 3803 } 3804 } 3805 3806 /** 3807 * Return whether currently in lock task mode. When in this mode 3808 * no new tasks can be created or switched to. 3809 * 3810 * @see Activity#startLockTask() 3811 * 3812 * @deprecated Use {@link #getLockTaskModeState} instead. 3813 */ 3814 @Deprecated 3815 public boolean isInLockTaskMode() { 3816 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3817 } 3818 3819 /** 3820 * Return the current state of task locking. The three possible outcomes 3821 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3822 * and {@link #LOCK_TASK_MODE_PINNED}. 3823 * 3824 * @see Activity#startLockTask() 3825 */ 3826 public int getLockTaskModeState() { 3827 try { 3828 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3829 } catch (RemoteException e) { 3830 throw e.rethrowFromSystemServer(); 3831 } 3832 } 3833 3834 /** 3835 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 3836 * thread can be a VR thread in a process at a time, and that thread may be subject to 3837 * restrictions on the amount of time it can run. 3838 * 3839 * To reset the VR thread for an application, a tid of 0 can be passed. 3840 * 3841 * @see android.os.Process#myTid() 3842 * @param tid tid of the VR thread 3843 */ 3844 public static void setVrThread(int tid) { 3845 try { 3846 ActivityManagerNative.getDefault().setVrThread(tid); 3847 } catch (RemoteException e) { 3848 // pass 3849 } 3850 } 3851 3852 /** 3853 * The AppTask allows you to manage your own application's tasks. 3854 * See {@link android.app.ActivityManager#getAppTasks()} 3855 */ 3856 public static class AppTask { 3857 private IAppTask mAppTaskImpl; 3858 3859 /** @hide */ 3860 public AppTask(IAppTask task) { 3861 mAppTaskImpl = task; 3862 } 3863 3864 /** 3865 * Finishes all activities in this task and removes it from the recent tasks list. 3866 */ 3867 public void finishAndRemoveTask() { 3868 try { 3869 mAppTaskImpl.finishAndRemoveTask(); 3870 } catch (RemoteException e) { 3871 throw e.rethrowFromSystemServer(); 3872 } 3873 } 3874 3875 /** 3876 * Get the RecentTaskInfo associated with this task. 3877 * 3878 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3879 */ 3880 public RecentTaskInfo getTaskInfo() { 3881 try { 3882 return mAppTaskImpl.getTaskInfo(); 3883 } catch (RemoteException e) { 3884 throw e.rethrowFromSystemServer(); 3885 } 3886 } 3887 3888 /** 3889 * Bring this task to the foreground. If it contains activities, they will be 3890 * brought to the foreground with it and their instances re-created if needed. 3891 * If it doesn't contain activities, the root activity of the task will be 3892 * re-launched. 3893 */ 3894 public void moveToFront() { 3895 try { 3896 mAppTaskImpl.moveToFront(); 3897 } catch (RemoteException e) { 3898 throw e.rethrowFromSystemServer(); 3899 } 3900 } 3901 3902 /** 3903 * Start an activity in this task. Brings the task to the foreground. If this task 3904 * is not currently active (that is, its id < 0), then a new activity for the given 3905 * Intent will be launched as the root of the task and the task brought to the 3906 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3907 * an activity to launch in a new task, then a new activity for the given Intent will 3908 * be launched on top of the task and the task brought to the foreground. If this 3909 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3910 * or would otherwise be launched in to a new task, then the activity not launched but 3911 * this task be brought to the foreground and a new intent delivered to the top 3912 * activity if appropriate. 3913 * 3914 * <p>In other words, you generally want to use an Intent here that does not specify 3915 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3916 * and let the system do the right thing.</p> 3917 * 3918 * @param intent The Intent describing the new activity to be launched on the task. 3919 * @param options Optional launch options. 3920 * 3921 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3922 */ 3923 public void startActivity(Context context, Intent intent, Bundle options) { 3924 ActivityThread thread = ActivityThread.currentActivityThread(); 3925 thread.getInstrumentation().execStartActivityFromAppTask(context, 3926 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3927 } 3928 3929 /** 3930 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3931 * Intent of this AppTask. 3932 * 3933 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3934 * be set; otherwise, it will be cleared. 3935 */ 3936 public void setExcludeFromRecents(boolean exclude) { 3937 try { 3938 mAppTaskImpl.setExcludeFromRecents(exclude); 3939 } catch (RemoteException e) { 3940 throw e.rethrowFromSystemServer(); 3941 } 3942 } 3943 } 3944} 3945